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Journal articles on the topic 'Plastics Technology'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 September 2023

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1

Dayrit, Fabian. "Circular Plastics Economy: Redesigning Technology and Reimagining Society." Transactions of the National Academy of Science and Technology 44, no. 2022 (January 2023): 1–22. http://dx.doi.org/10.57043/transnastphl.2022.2570.

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The UN Environment Programme has identified plastic waste as one of the urgent challenges of the 21st century and has set 2024 as the target date for the drafting of an international legally binding agreement on plastic pollution. While the concern for plastic pollution is justified, a workable solution that considers both the role that plastics play in society and the economy, and the scientific and technological challenges involved, will take a major global effort. The six thermoplastics that are most widely used today were not designed to be recycled. Likewise, over 10,000 chemical additives in plastics were not tested for their health and environmental safety. The complexity of plastic waste makes their effective management very difficult and uneconomic. A new system with two types of plastics is proposed: circular plastics that can be chemically reprocessed, and bio-based plastics that are designed for single-use and are biodegradable. This will require R&D into new plastics, as well as new standards and regulations. At the same time, R&D into the conversion of our current plastic waste into environmentally safe products must be undertaken. These will require a multi-sectoral approach which assigns responsibility to all sectors. Industry should institute extended producer responsibility and develop circular plastics. Society should adopt extended consumer responsibility. Government should replace its single-minded focus on GDP as the sole measure of development with the more holistic UN Sustainable Development Goals. This transition will not happen if it is seen only as a technological challenge. This transition will require a multi-sectoral approach which assigns responsibility to all sectors of society. We will not be able to reimagine plastics if we do not reimagine society.

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2

Zhang, Zhi Guo, Chen Lin, Da Kui Feng, and Ray Still. "Improving Plastic Thermoform Quality with Uniform Heating Technology." Advanced Materials Research 97-101 (March 2010): 204–8. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.204.

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The experimental studies were conducted to study the plastic thermoforming heating process. The heaters performance has been evaluated from two different ways: heating water calorimeter for heating efficiency and heating plastics for thermoform processes. The studies of the heaters include gas-fired heater and electric heater. Transient heating processes of plastics were also studied to investigate the heater’s performance on plastics. The surface temperature of plastic at the end of heating process was measured by IR camera. The heating cycle time, surface temperature uniformity of plastic and energy consumed for the heating cycle by different heaters were discussed. The pros and cons of different heaters for plastic heating process were also discussed in this paper.

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3

Eze, Wilson Uzochukwu, Reginald Umunakwe, Henry Chinedu Obasi, Michael Ifeanyichukwu Ugbaja, Cosmas Chinedu Uche, and Innocent Chimezie Madufor. "Plastics waste management: A review of pyrolysis technology." Clean Technologies and Recycling 1, no. 1 (2021): 50–69. http://dx.doi.org/10.3934/ctr.2021003.

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<abstract> <p>The world is today faced with the problem of plastic waste pollution more than ever before. Global plastic production continues to accelerate, despite the fact that recycling rates are comparatively low, with only about 15% of the 400 million tonnes of plastic currently produced annually being recycled. Although recycling rates have been steadily growing over the last 30 years, the rate of global plastic production far outweighs this, meaning that more and more plastic is ending up in dump sites, landfills and finally into the environment, where it damages the ecosystem. Better end-of-life options for plastic waste are needed to help support current recycling efforts and turn the tide on plastic waste. A promising emerging technology is plastic pyrolysis; a chemical process that breaks plastics down into their raw materials. Key products are liquid resembling crude oil, which can be burned as fuel and other feedstock which can be used for so many new chemical processes, enabling a closed-loop process. The experimental results on the pyrolysis of thermoplastic polymers are discussed in this review with emphasis on single and mixed waste plastics pyrolysis liquid fuel.</p> </abstract>

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4

Folkes, M. J. "Plastics technology handbook." Materials & Design 8, no. 6 (November 1987): 361. http://dx.doi.org/10.1016/0261-3069(87)90104-x.

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5

Zhang, Hua Yong, Xiao Jian Liu, and Hai Yan Sun. "Research on Technology of Wood-Plastic Composites." Advanced Materials Research 630 (December 2012): 75–79. http://dx.doi.org/10.4028/www.scientific.net/amr.630.75.

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Wood-plastic composites were produced by heating, blending and extruding with recycled plastics and wood fiber as chief raw materials and some thermoplastic resin as the additive. The compounding formula and producing craft were researched and optimized. The influence of the ratio of wood fiber and additives was examined. Wood-plastics composites with excellent performance were produced.

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6

HORIUCHI, Akiyo, Minoru MAKI, Ichiro KOBAYASHI, and Zihe LU. "PG-04 A Study on Hourglass Worm Gear of Plastics Involutes Helical gear Wheel Teeth(PLASTIC GEAR TECHNOLOGY)." Proceedings of the JSME international conference on motion and power transmissions 2009 (2009): 444–49. http://dx.doi.org/10.1299/jsmeimpt.2009.444.

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7

Watanabe, Mitsuhiro, Kunihito Baba, Yuichi Saito, and Masaharu Sugimoto. "Plating Technology on Plastics." Seikei-Kakou 23, no. 11 (October 20, 2011): 645–48. http://dx.doi.org/10.4325/seikeikakou.23.645.

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8

Masui, Shohei. "Plastics Surface Decoration Technology." Seikei-Kakou 31, no. 1 (December 20, 2018): 6–11. http://dx.doi.org/10.4325/seikeikakou.31.6.

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9

Blyler, Lee L. "Plastics in lightwave technology." Polymer Engineering and Science 29, no. 17 (September 1989): 1157–58. http://dx.doi.org/10.1002/pen.760291702.

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10

Trofimov, Yu V. "On application of heat-conductive plastics in LED technology." Semiconductor Physics Quantum Electronics and Optoelectronics 16, no. 2 (June 25, 2013): 198–200. http://dx.doi.org/10.15407/spqeo16.02.198.

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11

Lomwongsopon, Passanun, and Cristiano Varrone. "Contribution of Fermentation Technology to Building Blocks for Renewable Plastics." Fermentation 8, no. 2 (January 22, 2022): 47. http://dx.doi.org/10.3390/fermentation8020047.

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Large-scale worldwide production of plastics requires the use of large quantities of fossil fuels, leading to a negative impact on the environment. If the production of plastic continues to increase at the current rate, the industry will account for one fifth of global oil use by 2050. Bioplastics currently represent less than one percent of total plastic produced, but they are expected to increase in the coming years, due to rising demand. The usage of bioplastics would allow the dependence on fossil fuels to be reduced and could represent an opportunity to add some interesting functionalities to the materials. Moreover, the plastics derived from bio-based resources are more carbon-neutral and their manufacture generates a lower amount of greenhouse gasses. The substitution of conventional plastic with renewable plastic will therefore promote a more sustainable economy, society, and environment. Consequently, more and more studies have been focusing on the production of interesting bio-based building blocks for bioplastics. However, a coherent review of the contribution of fermentation technology to a more sustainable plastic production is yet to be carried out. Here, we present the recent advancement in bioplastic production and describe the possible integration of bio-based monomers as renewable precursors. Representative examples of both published and commercial fermentation processes are discussed.

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12

Lubongo, Cesar, and Paschalis Alexandridis. "Assessment of Performance and Challenges in Use of Commercial Automated Sorting Technology for Plastic Waste." Recycling 7, no. 2 (February 23, 2022): 11. http://dx.doi.org/10.3390/recycling7020011.

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Recycling plastic is an important step towards a circular economy. Attaining high-quality recycled plastics requires the separation of plastic waste by type, color, and size prior to reprocessing. Automated technology is key for sorting plastic objects in medium- to high-volume plants. The current state of the art of commercial equipment for sorting plastic as well as challenges faced by Material Recovery Facilities (MRFs) to sort post-consumer plastics are analyzed here. Equipment for sorting plastic recyclables were identified using publicly available information obtained from manufacturers’ websites, press releases, and journal articles. Currently available automated sorting equipment and artificial intelligence (AI)-based sorters are evaluated regarding their functionality, efficiency, types of plastics they can sort, throughput, and accuracy. The information compiled captures the progress made during the ten years since similar reports were published. A survey of MRFs, reclaimers, and brokers in the United States identified methods of sorting used for plastic, sorting efficiency, and current practices and challenges encountered at MRFs in sorting plastic recyclables. The commercial sorting equipment can address some of the challenges that MRFs face. However, sorting of film, multilayered, blended, or mixed-material plastics is problematic, as the equipment is typically designed to sort single-component materials. Accordingly, improvements and/or new solutions are considered necessary.

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13

Yu, Gui Wen, Li Li Zhao, Zhi Hui Sun, and Jin Long Zhang. "Research Status of Plastic Vacuum Coating." Applied Mechanics and Materials 318 (May 2013): 308–11. http://dx.doi.org/10.4028/www.scientific.net/amm.318.308.

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Vacuum coating technology in the decoration, block, electromagnetic, sunlight, etc all have advantages, is widely used in various fields. Plastic vacuum coating technology can improve the surface quality of the plastics , It has the unique function of both plastics and metals. Introduced the plastic vacuum coating equipment, coating of paint and plastic vacuum coating in glass, foam, electromagnetic shielding and other aspects of the application of the latest research situation.

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14

Khatri, Amrita. "RECYCLING AND PYROLYSIS OF WASTE PLASTICS." International Journal of Research -GRANTHAALAYAH 3, no. 9SE (September 30, 2015): 1–3. http://dx.doi.org/10.29121/granthaalayah.v3.i9se.2015.3108.

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Plastic has achieved such an extensive market due to fact that it is lightweight, cheap, flexible and reusable. But now it is regarded as a serious hazard. All recommendation for and against plastics finally land up on the reality that plastics are slow to degrade. By the end of the 20th century, plastics are found as persistent polluters of many environmental niches, from Mount Everest to the bottom of the sea. There are numerous ways by which plastic pollution can be controlled. Pyrolysis is referred to as polymer cracking and its main advantages are that it can deal with plastic waste .This paper provides an overview of the science and technology of pyrolysis of waste plastics. The major advantage of the pyrolysis technology is its ability to handle unsorted, unwashed plastic. The production of gasoline, kerosene and diesel from waste plastics is an emerging technological solution to the vast amount of plastics that cannot be economically recovered by conventional mechanical recycling. The disposal and decomposition of plastics has been an issue which has caused a number of research works to be carried out in this regard. Currently, the paper reviews the production of Petroleum-based fuel viz. gasoline, kerosene and diesel from recycling of waste plastics is an emerging technological solution to the vast amount of plastic wastes that cannot be economically recovered by conventional mechanical recycling operations. This involves the use of pyrolysis which permits recovery of valuable gasoline and diesel-range hydrocarbons from waste plastics that are otherwise land filled.

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15

FUKUDA, Toshio. "Technology for Waste Plastics Recycling." RESOURCES PROCESSING 46, no. 4 (1999): 187–92. http://dx.doi.org/10.4144/rpsj1986.46.187.

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16

Kołterniak, Agnieszka. "Vibration welding technology for plastics." Welding International 26, no. 4 (April 2012): 286–91. http://dx.doi.org/10.1080/09507116.2011.600002.

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17

MINAMI, SATOYUKI. "Manufacturing Technology of Plastics Films." Sen'i Gakkaishi 41, no. 9 (1985): P290—P301. http://dx.doi.org/10.2115/fiber.41.9_p290.

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18

Sims, D. "Developments in plastics technology—2." Polymer Degradation and Stability 15, no. 2 (January 1986): 189–90. http://dx.doi.org/10.1016/0141-3910(86)90073-x.

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19

Sims, D. "Developments in plastics technology—3." Polymer Degradation and Stability 17, no. 4 (January 1987): 359–60. http://dx.doi.org/10.1016/0141-3910(87)90095-4.

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20

Prokudin, G. Yu, and N. G. Sharonov. "DEVELOPMENT OF AN AUTOMATED VACUUM CHAMBER FOR SMALL-SCALE CASTING OF PLASTIC PARTS." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 8(243) (August 28, 2020): 67–70. http://dx.doi.org/10.35211/1990-5297-2020-8-243-67-70.

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The results of developing the optimal technology for manufacturing plastic parts for small-scale production are presented. Methods for improving the quality of reactive plastics casting have been identified. Designed and manufactured automated equipment that support developed by the technology of casting thermosetting plastics in flexible molds.

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21

Ragan, Emil, Petr Baron, and Jozef Dobránsky. "Sucking Machinery of Transport for Dosing Granulations of Plastics at Injection Molding." Advanced Materials Research 383-390 (November 2011): 2813–18. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2813.

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Advantageous properties of plastic materials, low investment costs for a production, cheap and productive processing method were given the rapid development of plastic materials. In this time injection molding technology is the most using technology for processing plastics in our country. Quality of the plastics processing depends mainly on the quality of material and preparing it for production. The first step in the processing of plastic by injection molding is dosing of granulations from hopper of injection machine unit. Task of this contribution is to theoretically describe a pneumatic method for transport of granulations in injection molding machine.

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22

B, Suresh, and Poojitha . "Waste Vegetable Peals as Bioplastics: A Review." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 2169–72. http://dx.doi.org/10.22214/ijraset.2022.42784.

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Abstract: Bio-plastic is a significant role in our ecosystem as it is eco-friendly and compatible, when matched to plastic carry bags. Bio-plastic are produced by organic waste in environment and it degrading faster than plastic which was made of chain of polymers. Plastic made our environment poisonous, aquatic animals to die and many more. Environmental friendly plastic is made of many organic wastes like banana peel, sugarcane bagasse, newspaper, shrimps etc. Bio-plastic mostly utilised in food packaging so that they are edible to humans and doesn’t cause any disease and disintegrates fast. Bio-plastic is helpful to mankind and useful to reduce environmental pollution. Bio-plastics are not affected to nature ecosystem because it can changes back into carbon dioxide. The plastics are substituted by number of varieties of bio-plastics. In this research paper chiefly discussed on utilization of substrates like vegetable waste, fruit and green leaves including water hyacinth as alternate substrate as bio- plastics. Market demand for bio-plastic is developing due to consumer-friendly products. It is less related with conventional plastics production than other bio-plastics. Keywords: bio-plastic, environmental friendly, organic substance.

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23

Oussai, Alaeddine, Zoltán Bártfai, László Kátai, and István Szalkai. "Development of a small-scale plastic recycling technology and a special filament product for 3D printing." International Journal of Engineering and Management Sciences 4, no. 1 (March 3, 2019): 365–71. http://dx.doi.org/10.21791/ijems.2019.1.45.

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In our days, the fight against pollution has become a real challenge for the state. recycling is one of the solutions that is adopted in several nations to reduce the rate of plastic discarded in nature. The amount of plastic waste has been increasing for decades contributing to the environmental pollution that is one of the most serious problem of the mankind. according to the statistics not only the household plastic waste, but the industry discharge is increasing because the utilization of plastic as a raw material is more and more extending. plastic can be found in a lot of products, huge number of bottles, plastic bags, computers, auto parts are sold every day. The current applications for using recycled plastics in fabrication and design are fairly limited, on a small scale, plastics (such as abs, HDPe1, or Pe2t) are shredded and formed into pellets, and then either extruded into lament to be used in existing 3d printers, or injection molded into small parts and pieces of larger components. at a large scale, recycled HDpE is melted into sheets and either used directly as sheets in construction, or then heat formed from a sheet into components for construction. these methods of fabrication using recycled plastics are the norm because of their straightforward processes. nevertheless, each method leaves some complexity to be desired. This paper we study the types of plastics and diagnose the pollution caused by the latter. this allowed us to design and size a recycling station of plastic into filaments for three-dimensional printers. this station which will contribute to the fight against pollution. the station consists of two machines for grinding of the plastic and the other for the extrusion of the desired filaments. we were able to make a theoretical academic study on both machines and also we designed with solidworks 2015. The theoretical study is spread of the mechanical calculations necessary to the design and validation of the structure using the tools. as the prospect of this project, we want to complete the achievement of this station while completing the crusher and extruder mechanically. then switch to electric and electronic parts (introduction of engines, sensors and wiring...). In the case of waste plastics that are recyclable and reusable. the most widely used are polyethylene terephthalate (pet, used for synthetic fibers and water bottles), and second high-density polyethylene (hdpe, used for jugs, bottle caps, water pipes).

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24

Tretsiakova-McNally, Svetlana, Helen Lubarsky, Ashlene Vennard, Paul Cairns, Charlie Farrell, Paul Joseph, Malavika Arun, Ian Harvey, John Harrison, and Ali Nadjai. "Separation and Characterization of Plastic Waste Packaging Contaminated with Food Residues." Polymers 15, no. 13 (July 4, 2023): 2943. http://dx.doi.org/10.3390/polym15132943.

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In this paper, we present the development of a novel processing technology to tackle hard-to-recycle plastic packaging waste contaminated with food residues. The proof-of-concept (POC) technology can effectively separate food residual amounts from plastic waste materials to a level acceptable for further re-use or recycling of the plastic packaging. To assess this technology, we have conducted spectroscopic, thermal, and calorimetric characterizations of the obtained fractions, such as cleaned mixed plastics (CMP), food waste with mixed plastics (FWMP), and a mixture of microplastics (MP). The analyses were carried out with the aid of Fourier-Transform Infrared spectroscopy (FT-IR), Thermo-Gravimetric Analysis (TGA), Microcone Combustion Calorimetry (MCC), and ‘bomb’ calorimetry. The highest ratio of CMP to FWMP and the lowest amount of MP were obtained utilizing 700 rpm blade rotational speed and 15 s residence time of contaminated plastics in a cutting mill chamber. The plastics were freed from food contamination by 93–97%, which highlights a strong potential of the POC as a solution for ‘dry-cleaning’ of similar wastes on a larger scale. The main components of the CMP fraction were low-density polyethylene (LDPE), polypropylene (PP), and polyethylene terephthalate (PET), which are recyclable plastics. The knowledge and understanding of thermal degradation behaviours and calorimetric attributes of separated fractions, determined in this study, are essential in informing the industrial players using pyrolysis as a technique for recycling plastics.

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25

van Engelshoven, Yuri, Pingping Wen, Maarten Bakker, Ruud Balkenende, and Peter Rem. "An Innovative Route to Circular Rigid Plastics." Sustainability 11, no. 22 (November 8, 2019): 6284. http://dx.doi.org/10.3390/su11226284.

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An innovative route for plastics recycling is proposed, based on a combination of a logarithmic sorting process and colour plus high-resolution near-infrared (NIR) sensors. Although counterintuitive, it is shown that such a technology could sort clean flakes from rigid packaging waste into a very large number of different plastic grades with modest sorter capacity, provided that the chosen sensor is able to differentiate correctly between any two grades of plastics in the waste. Tests with high-resolution NIR on single pixels of transparent flakes from different types and brands of packaging show that this is indeed the case for a selection of 20 different packaging items bought from shops. Moreover, the results seem to indicate, in line with previous research, that high-resolution NIR data can be linked to important physical plastic properties like the melt flow viscosity and tensile strength. The attraction of deep sorting of waste plastics with relatively cheap sensors and modest sorter capacity is that the present industrial practice of tuning plastic grades to specific applications could coexist with commercial high-grade recycling at high levels of circularity and low carbon footprint. Therefore, advanced recycling technology is likely to be a societal alternative to phasing out plastics for rigid applications.

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26

Taniguchi, Katsuhiko. "Expectation for New Plastics Molding Technology." Seikei-Kakou 21, no. 2 (January 20, 2009): 49. http://dx.doi.org/10.4325/seikeikakou.21.49.

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27

Tominaga, Aya, and Shigeru Yao. "Trend of Recycling Technology of Plastics." Seikei-Kakou 32, no. 8 (July 20, 2020): 283–86. http://dx.doi.org/10.4325/seikeikakou.32.283.

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28

Alex Tullo. "Plastics recycling firms strike technology deals." C&EN Global Enterprise 100, no. 5 (February 7, 2022): 10. http://dx.doi.org/10.1021/cen-10005-buscon6.

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29

van Wayenburg, Bruno. "Novel technology: magnets that separate plastics." Filtration & Separation 43, no. 2 (March 2006): 33–35. http://dx.doi.org/10.1016/s0015-1882(06)70789-3.

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30

Mistry, Kalpana. "Tutorial Plastics welding technology for industry." Assembly Automation 17, no. 3 (September 1997): 196–200. http://dx.doi.org/10.1108/01445159710172210.

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31

Köhne, Ulla. "24th IKV International Plastics Technology Colloquium." Macromolecular Materials and Engineering 293, no. 6 (June 16, 2008): 543–45. http://dx.doi.org/10.1002/mame.200800114.

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32

Brinkmann, Markus. "25th IKV International Plastics Technology Colloquium." Macromolecular Materials and Engineering 295, no. 7 (June 30, 2010): 682–84. http://dx.doi.org/10.1002/mame.201000145.

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33

LyondellBasell, Erik Licht. "Innovative Bonding with Plastics Interface Technology." Plastics Engineering 70, no. 6 (June 2014): 32–33. http://dx.doi.org/10.1002/j.1941-9635.2014.tb01192.x.

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34

Selke, Susan E. M., and D. R. Bain. "Book Review: Understanding Plastics Packaging Technology." Engineering Plastics 6, no. 2 (January 1998): 147823919800600. http://dx.doi.org/10.1177/147823919800600207.

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35

Selke, Susan E. M., and D. R. Bain. "Book Review: Understanding Plastics Packaging Technology." Polymers and Polymer Composites 6, no. 2 (February 1998): 108. http://dx.doi.org/10.1177/096739119800600207.

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36

Aytan Movsumova, Aytan Movsumova. "STUDY OF TECHNOLOGY OF PRODUCTION OF SLAP PARTS FROM PLASTIC MATERIALS WORKING IN OIL-MINING EQUIPMENT." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 12, no. 01 (January 22, 2022): 29–33. http://dx.doi.org/10.36962/pahtei1201202229.

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This article is devoted to the study of the technology of preparation of smooth parts prepared of plastic materials working in oil-field equipment. The strengh of smooth part sin oil-field equipment,the collection of plastic parts, as well as complex properties are studied. Due to the fact that the components of plastic materials have high performance indicators,the usual processing methods are used by preparing them in various constructions. This shows that in the chemical environment,the items prepared of plastic materilas are electrically conductive,heat-resistant additives. This problem is especially important in the use of structures made of plastic materilas,which are widely used in oilfield equipment,and parts made of diferent types of heterogeneous materials.Their quality is formed in the process of design and construction. Ensuring the quality of components made of thermoplastic and thermosetting material sin the production process can be considered a topical issue.If we look at the pros and cons of the plastic materials quality management sector: It is possible to point out to the interested parties whether the existence of processing facilities has not been initiated for collection and segregation. On the downside, the existing standarts do not meet internaitonal standards and we can note that there are technological problems. Plastic materials are superior to metal sin many respects. Their quality indicators,the accuracy,strengh,level of cleanliness,ensure reliability and durability. The production and acquisition of new types of plastic mass is in the focus of attention of many research centers in the world’s leading countries. Soviet scientists were the first to invert endless screwredcers made of plastic. These examples are 10 times cheaper than in previous years, and 5-6 times light. For example, in Russia Karajoyev plastic plant, Lyubucevsk plastic plant, etc. such as large plastic plants are currently operating. Currently, the industry cannot be imagined without plastic mass. We can call the twentieth century the polymer century. The appliciation of plastic materials of plastic materials has many advantages in industry. For example,duet o its low weight and thermal and electrical conductivity,it is used in industries in developed countires. They also have high static and dynamic properties. The advantage of the dynamic feature is the application of plastic material sin areas such as radio engineering and electrical engineering. Examples of areas where smooth parts made of plastics are applied include machine building, aviation, petrochemistry, missile technology and instrument making. Smooth parts made of plastic materials have high reliability, durability and longevity.İn developed countiries, 40-50 percent of the materials used in mechanical engineering,instrument making and other industries are plastics of various brands,Plastics are easy to-process,low-cost and durable parts. Smooth parts made of plastics have high reliability, durability and longevity. The article analyzes the operation of plastic mass components,the analysis of the technology of production of smooth parts made of plastic materials used in oilfield equipment,as well as their strengh and reliability. Keywords: Plastic material, quality indicators, thermoset materials, performance indicators.

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37

Cheon, Hyeonwook, Jamshid Ruziev, Heonseok Lee, Yonghak Kang, Seungjun Roh, and Woosuk Kim. "Mechanical Properties of Cement Composites Using Modified Plastics by Gamma Irradiation." Applied Sciences 11, no. 24 (December 16, 2021): 11982. http://dx.doi.org/10.3390/app112411982.

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Recently, pollution caused by an increasing amount of worldwide plastic waste has become a global problem. However, these concerns can be alleviated by the use of gamma-ray technology. Using radiation technology, plastic wastes can be converted into a variety of useful purposes presenting powerful opportunities for environmental sustainability and material innovations. Plastics are strong, durable, waterproof, lightweight, easy to mold, and recyclable. In this study, plastic aggregate modified by gamma irradiation was mixed into cement composites, and mechanical property evaluation experiments were conducted. As a result, it was confirmed that the physical performance of cement composites was improved by up to 70% in the case of using the modified plastic aggregates compared to the general plastic aggregate.

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38

Hsiung, Wei, Song Young, and Zhi Bin Xie. "Research on an Integrated Plastics Product Design Method." Applied Mechanics and Materials 101-102 (September 2011): 693–96. http://dx.doi.org/10.4028/www.scientific.net/amm.101-102.693.

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With continuous development of macromolecule technology and great invention of advanced materials with high quality, plastic parts are widely applied in the areas like aerospace, mechanism and medical instruments. However, the design methods of plastics are still restricted in many aspects. This paper proposes an integrated method for plastic product design, which has been demonstrated by a case study as feasible and effective.

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39

Kers, J., P. Kulu, D. Goljandin, and V. Mikli. "Reprocessing technology of composite plastic scrap and properties of materials from recycled plastics." Estonian Journal of Engineering 13, no. 2 (2007): 105. http://dx.doi.org/10.3176/eng.2007.2.04.

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40

Ashir, Moniruddoza, and Chokri Cherif. "Development of shape memory alloy-based adaptive fiber-reinforced plastics by means of open reed weaving technology." Journal of Reinforced Plastics and Composites 39, no. 15-16 (April 21, 2020): 563–71. http://dx.doi.org/10.1177/0731684420920941.

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The functionalization of fiber-reinforced plastics has been improved continuously in recent years in order to broaden their application potential. By using shape memory alloys in fiber-reinforced plastics, adaptive fiber-reinforced plastics can be developed, which in turn can change their shape depending on the activation of shape memory alloys. In order to ensure the proper force transmission from shape memory alloys to fiber-reinforced plastic, these shape memory alloys need to be integrated into the reinforcing fabric. Hence, this paper presents the application of open reed weaving technology for the development of functionalized preforms for adaptive fiber-reinforced plastics. For an optimized shape memory effect during their thermal induced activation, the shape memory alloys were coated with release agent and then integrated into the woven fabric by open reed weaving technology. The hinged width of functionalized preforms was varied from 50 mm to 150 mm. These preforms were infused by a thermosetting resin matrix system with a modifier. Subsequently, the electro-mechanical testing of adaptive fiber-reinforced plastics was executed. Results show that the maximum deformation of adaptive fiber-reinforced plastics was proportional to their hinged width.

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Kumar, Mohit, and Anil Kumar Choudhary. "A Review on Behaviour of Concrete by Partial Replacement of Coarse Aggregate with Waste Plastic." International Journal for Research in Applied Science and Engineering Technology 10, no. 10 (October 31, 2022): 204–13. http://dx.doi.org/10.22214/ijraset.2022.46979.

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Abstract: The utilization of fluctuated states of plastic has been brought up lately because of the increment in industrialization and different human exercises. greatest plastic waste is disposed of and requires a major dump area for capacity. either significantly, the light biodegradability of plastics represents a genuine peril to the delayed consequence of ecological security. varied techniques have been followed to deposit plastics in and work to break the negative impact of plastics on the climate. just, fluctuated kinds of plastics have been coordinated into cement to break the danger of plastics to the around the human being. The main motive of this review is to explore the experimental behaviour of concrete holding plastics that were utilized as partial replacements for coarse aggregates.

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Zhang, Haigang, Yilin Hou, Wenjin Zhao, and Hui Na. "Control Strategies of Plastic Biodegradation through Adjusting Additives Ratios Using In Silico Approaches Associated with Proportional Factorial Experimental Design." International Journal of Environmental Research and Public Health 19, no. 9 (May 6, 2022): 5670. http://dx.doi.org/10.3390/ijerph19095670.

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Plastics, as a polymer material, have long been a source of environmental concern. This paper uses polystyrene plastics as the research object, and the relative contribution of each component of plastic additives to plastic degradation is screened using the molecular dynamics method. The factorial experimental design method is combined with molecular dynamics simulation to adjust the additive composition scheme, analyze the mechanism of interaction between the additive components, and select the plastic additive combination that is most readily absorbed and degraded by microorganisms. Seven different types of plastic additives, including plasticizers, antioxidants, light and heat stabilizers, flame retardants, lubricants, and fillers, are chosen as external stimuli affecting the biodegradability of plastics. Using molecular dynamics simulation technology, it is demonstrated that plastic additives can promote the biodegradability of plastics. The factorial experimental design analysis revealed that all plastic additives can promote plastic biodegradation and plasticizer is the most favorable factor affecting plastic degradation, that hydrophobicity interactions are the primary reason for enhancing plastic degradation, and that screening No. 116–45 (plasticizer A, light stabilizer C, flame retardant E) is the most advantageous combination of biodegradable plastic additives. The plastic biodegradation effect regulation scheme proposed in this study is based on optimizing the proportion of additive components. To continue research on aquatic biodegradable plastics, the optimal combination of plastic components that can be absorbed and degraded by microorganisms is recommended.

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Blondel, Elise, and Laura Klinkenberg. "Cleaning our seas and oceans of plastic litter." Project Repository Journal 10, no. 1 (September 10, 2021): 138–41. http://dx.doi.org/10.54050/prj10138141.

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Cleaning our seas and oceans of plastic litter Increased global production and poor waste management have led to a build-up of plastic litter in the world’s oceans. This has a devastating effects on ecosystems and marine life. The flow of plastics into the oceans occurs through a variety of pathways, but rivers are one of the largest contributors. The LIFE SouPLess project aims to develop technology to catch plastics from rivers before they spread to the seas and oceans. It is a 4.5 years project (July 2018 – December 2022). Three main links of the chain of riverine plastic recovery will be tackled: from locating plastic hotspots with a dedicated numerical model to effectively collecting the plastics with systems and finding cost-effective solutions for post-processing the collected litter.

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Klinkenberg, Laura. "Catch plastic litter before it reaches the ocean." Project Repository Journal 16, no. 1 (February 27, 2023): 92–97. http://dx.doi.org/10.54050/prj1619912.

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Catch plastic litter before it reaches the ocean Increased global production and poor waste management have led to a build-up of plastic litter in the world’s oceans. This has devastating effects on ecosystems and marine life. The flow of plastics into the oceans occurs through a variety of pathways, but rivers are one of the largest contributors. The LIFE SouPLess project aims to develop technology to catch plastics from rivers before they spread to the seas and oceans. It is a 4.5 years project (July 2018 – December 2022). Three main links of the chain of riverine plastic recovery will be tackled: from locating plastic hotspots with a dedicated numerical model to effectively collecting the plastics with systems and finding sustainable and cost-effective solutions for post-processing the collected litter.

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Slavkina, Viktoriya E. "Material Selection for Prototyping a Heat Exchanger Cover Using Additive Technology." Elektrotekhnologii i elektrooborudovanie v APK 48, no. 4 (December 2021): 68–74. http://dx.doi.org/10.22314/2658-4859-2021-68-4-68-74.

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The development of new designs involves repeated tests confirming their operability. One of the promising methods of producing prototypes for testing their working capacity is additive manufacturing. To date, the most widespread 3D printing technology is Fused deposition modeling. The advantages of this method over other 3D printing technologies are the simplicity of the process and the availability of equipment and materials, their wide range, which allows you to vary the properties of the product. The article describes the application of the technology for the manufacture of a prototype of a heat exchanger cover and the influence of the working fluid of the heat exchanger on the properties of the material from which it is made. (Research purpose) The research purpose is to select a 3D printing material that would retain its properties under the specified operating conditions, as well as meet all the basic criteria for the selection of materials established by materials science practice. (Materials and methods) The materials considered for 3D printing by Fused deposition modeling: general-purpose plastics; engineering plastics; high-temperature or superconstructive plastics. SBS, PETG and PC plastics used in 3D printing. The samples were printed on a Picaso Designer X Pro 3D printer with 50 and 100 percent filling in the grid with an angle in the crosshair of 90 degrees. (Results and discussion) The article describes the dependence of volumetric shrinkage on the percentage of filling. The results of experimental studies of the retention of samples in the working fluid were presented. The indicators of swelling of the studied plastics were described. (Conclusions) The greater the internal percentage of filling, the smaller the change in the mass of the sample. For the manufacture of the heat exchanger cover by 3D printing, it is recommended to use PETG plastic with one hundred percent filling.

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Ding, Qian, and Heping Zhu. "The Key to Solving Plastic Packaging Wastes: Design for Recycling and Recycling Technology." Polymers 15, no. 6 (March 16, 2023): 1485. http://dx.doi.org/10.3390/polym15061485.

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Confronted with serious environmental problems caused by the growing mountains of plastic packaging waste, the prevention and control of plastic waste has become a major concern for most countries. In addition to the recycling of plastic wastes, design for recycling can effectively prevent plastic packaging from turning into solid waste at the source. The reasons are that the design for recycling can extend the life cycle of plastic packaging and increase the recycling values of plastic waste; moreover, recycling technologies are helpful for improving the properties of recycled plastics and expanding the application market for recycled materials. This review systematically discussed the present theory, practice, strategies, and methods of design for recycling plastic packaging and extracted valuable advanced design ideas and successful cases. Furthermore, the development status of automatic sorting methods, mechanical recycling of individual and mixed plastic waste, as well as chemical recycling of thermoplastic and thermosetting plastic waste, were comprehensively summarized. The combination of the front-end design for recycling and the back-end recycling technologies can accelerate the transformation of the plastic packaging industry from an unsustainable model to an economic cycle model and then achieve the unity of economic, ecological, and social benefits.

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Tanoue, Shuichi. "The SPE Asian Plastics Technology Conference 2003." Seikei-Kakou 15, no. 12 (December 20, 2003): 815–16. http://dx.doi.org/10.4325/seikeikakou.15.815.

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MACHIDA, Terufumi. "Application of Plasticity Technology to Plastics Materials." Tetsu-to-Hagane 75, no. 12 (1989): 2146–58. http://dx.doi.org/10.2355/tetsutohagane1955.75.12_2146.

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ITO, Hiroshi. "Precision Processing Technology in Plastics Injection Moldings." NIPPON GOMU KYOKAISHI 82, no. 5 (2009): 215–20. http://dx.doi.org/10.2324/gomu.82.215.

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ISHIKAWA, Yoshiaki. "Processing technology for municipal waste containing plastics." Transactions of the Japan Society of Mechanical Engineers Series B 51, no. 466 (1985): 2021–25. http://dx.doi.org/10.1299/kikaib.51.2021.

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