Dissertations / Theses on the topic 'Plastics – Extrusion'
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Macauley, Nicola Jayne. "Extrusion and thermoforming of polypropylenes." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337017.
Full textLam, Ying. "Quantification of dynamic mixing characteristics during polymer extrusion." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B36540869.
Full textLam, Ying, and 林瀅. "Quantification of dynamic mixing characteristics during polymer extrusion." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36540869.
Full textZhao, Jianhong. "Solid state extrusion of polymers through convergent-divergent dies." Thesis, Loughborough University, 1991. https://dspace.lboro.ac.uk/2134/22079.
Full textWang, Xinting. "NEW SYSTEMS FROM THE FORCED ASSEMBLY CO-EXTRUSION PROCESS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1607104088439343.
Full textHurysz, Kevin Michael. "Paste mechanics for fine extrusion." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19424.
Full textHandlos, Agnita A. "The processing of microcomposites based on polypropylene and two thermotropic liquid crystalline polymers in injection molding, sheet extrusion, and extrusion blow molding." Diss., This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06062008-164735/.
Full textRongzhi, Huang. "MULTILAYER CO-EXTRUSION AND TWIN-SCREW COMPOUNDING OF POLYMERIC ELASTOMER SYSTEMS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1404864078.
Full textShishesaz, Mohammad Reza. "Structure-property relationships in extruded plastics foams." Thesis, Brunel University, 1989. http://bura.brunel.ac.uk/handle/2438/5404.
Full textUvieghara, Mathias N. "The Effect of Deborah Number and Aspect Ratio on the Film Casting of LLDPE Melts." Fogler Library, University of Maine, 2004. http://www.library.umaine.edu/theses/pdf/UviegharaMN2004.pdf.
Full textParpart, Dawn Allison. "PET/nylon 66 polymer blends and carpet recycling." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/9139.
Full text林肖明 and Chiu-ming Lam. "Visualization studies on the dynamic processing characteristics of conventional full-flighted and barrier type single-screws." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31222845.
Full textHuang, Keyuan. "Decrosslinking of Crosslinked Polyethylene via Ultrasonically Aided Extrusion." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1428160856.
Full textSanyal, Yoddhojit 1969. "Synthesis and analysis of a microcellular plastics extrusion system for insulation of fine wires." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50529.
Full textIncludes bibliographical references (leaves 138-140).
This thesis deals with analytical and experimental work performed on the extrusion of microcellular plastics with cell sizes of 20 microns or less and cell densities of about a billion cells per cm3. An analytical model of cell nucleation and cell growth during extrusion was developed. This model predicts the nucleation rate by taking into account Gibbs free energy change due to phase separation, as well as surface energy, in binary systems (such as polymer/gas mixtures). The cell growth kinetics during extrusion is also studied under some limiting cases. The analysis shows that due to the simultaneous occurrence of cell nucleation and cell growth during extrusion, these two phenomena are coupled and compete with each other for the gas dissolved in the polymer. With the aid of this model the important extrusion parameters affecting the microstructure of the foam were identified. An order-of-magnitude prediction of cell size, cell density and foam void fraction were made based on realistic numerical values of these parameters. The next phase of the project consisted of using the analytical model and Axiomatic Design Theory to design a tandem extrusion system for wire coating. Satisfaction of the Independence Axiom showed that the process was controllable. Preliminary analysis of the Information Axiom indicated that the system would be stable. Experiments were performed over a range of conditions to determine their effects on the final wire insulation diameter and capacitance. The experimental results were compared to the analytical predictions to further verify the validity of the model as well as to determine its limitations.
by Yoddhojit Sanyal.
Sc.D.
Alemaskin, Kirill. "ENTROPIC MEASURES OF MIXING IN APPLICATION TO POLYMER PROCESSING." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1098397260.
Full textRepka, Michael Andrew. "Physical-mechanical and chemical properties of topical films produced by hot-melt extrusion /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
Full textBarnes, Christopher Mark. "The cooling and solidification of thermoplastic polymers : an experimental and theoretical study of the cooling and solidification of thermoplastic polymers in various blow moulding and pipe extrusion situations." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236460.
Full textSabol, Edward A. "The development of a dual extrusion blending process and composites based on thermotropic liquid crystalline polymers and polypropylene." Thesis, Virginia Tech, 1994. http://hdl.handle.net/10919/40650.
Full textNovák, Jakub. "Návrh a realizace vytlačovací hlavy a návazných členů pro vytlačování kruhových plastových profilů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230993.
Full textGao, Xiang. "Ultrasound Assisted Extrusion and Properties of Polycarbonate/Carbon Nanotubes Composites and Cast Films." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1493394163570255.
Full textPandey, Vivek. "Extensional Mixing Elements for Improved Dispersive Mixing in Extrusion Operations." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1591698465031928.
Full textZhong, Jing. "Ultrasonically aided extrusion in preparation of polymer composites with carbon fillers." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460413630.
Full textHarris, Patrick James. "LAYERED POLYMERIC SYSTEMS:NEW PROCESSING METHODS AND NOVEL MECHANICAL DESIGN IN EXTENSIONAL RHEOLOGY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1410544432.
Full textArroyo-Huayta, Carlos, Sebastian Cruces-Raimudis, Gino Viacava-Campos, Claudia Leon-Chávarri, and Daniel Aderhold. "Model to improve the efficiency in the extrusion area in a manufacturing sme of the industrial plastic sector based on smed, autonomous maintenance and 5s." Springer, 2021. http://hdl.handle.net/10757/656029.
Full textAt present, companies in the Peruvian plastic sector have an average capacity utilization indicator of 71.45%. However, in Peru many SMEs are with 50% well below this indicator. After a study performed in a representative company of the Peruvian plastic sector, the causes of low efficiency in resource utilization were determined through a problems tree and a Pareto analysis. These causes are failures, reprocesses and Setup times in the extrusion machines, taking around 1008 h a year to solve these problems. This article proposes a model to improve efficiency, integrating Lean Manufacturing tools such as 5s, SMED, and autonomous maintenance. The first one was used as a support tool, while SMED was used to reduce the configuration time and autonomous maintenance to reduce the failures number and the reprocesses number. The model was validated through a case study, obtaining as results the reduction of the setup time by 50%, breakdowns by 50% and reprocesses by 60%.
Mehta, Bhavin V. "Computer aided design and analysis of polymer flows in three dimensional extrusion dies." Ohio : Ohio University, 1992. http://www.ohiolink.edu/etd/view.cgi?ohiou1173753025.
Full textCengiz, Filiz. "Preparation And Characterization Of Recycled Polypropylene Based Nanocomposites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609873/index.pdf.
Full text15A, Cloisite®
25A and Cloisite®
30B were used as organoclays, and ethylene-methyl acrylate-glycidyl methacrylate (E-MA-GMA) and maleic anhydride grafted polypropylene (PP-MAH) were used as compatibilizers. The effects of additive concentrations, types of organoclays and compatibilizers, processing conditions, and the compatibilizer to organoclay ratio on the morphology and mechanical, thermal and flow properties were investigated. Organoclay loading over 2 wt% prevented the intercalation mechanism and material properties, even in the presence of compatibilizer, as a consequence of large clay agglomerate formation. E-MA-GMA compatibilizer improved the intercalation ability of the polymer
however a substantial increase in mechanical properties was not obtained. PP-MAH is found to be a better compatibilizer. Processing conditions significantly affected both mechanical properties and morphology. When the processing temperature was decreased and screw speed was increased simultaneously, tensile and impact properties were improved owing to enhanced shear and dispersive forces. TEM analysis revealed that intercalated and delaminated structures were formed with the addition of PP-MAH compatibilizer. In addition to that, as the ratio of PP-MAH to organoclay was increased, more effective dispersion of organoclay was observed and hence resultant improvements in both tensile and impact properties were greater at compatibilizer to organoclay ratio of three. Cloisite®
15A exhibited the highest improvements in mechanical properties, although the degree of organoclay dispersion was better for Cloisite®
25A and particularly for Cloisite®
30B. Melt flow index values were lower compared to pure recycled polypropylene in the presence of organoclay and compatibilizers. DSC analysis indicated no significant change in the melting behavior of the matrix materials.
Yeniova, Canan Esma. "Impact Modified Polystyrene Based Nanocomposites." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610306/index.pdf.
Full text30B, 25A and 15A) were used as fillers. Nanocomposite preparation was performed in a co-rotating twin screw extruder. Initially elastomer and organoclay contents were kept at 5wt% and 1-2wt% respectively. Well dispersed silicate layers were obtained for the nanocomposite containing SEBS-g-MA and Cloisite®
25A owing to the high viscosity of SEBS-g-MA and the solubility of polystyrene end block of SEBS with PS matrix. Owing to higher hydrophobicity of Cloisite®
15A a better dispersion was expected compared to Cloisite®
25A, but, it was concluded that two long aliphatic tails of Cloisite®
15A limited the access of polymer chains to the clay surface. The desired impact strength values could not be achieved by using 5wt% elastomeric materials
therefore, it was decided to increase the SEBS-g-MA content up to 15, 20, 30 and 40wt%. With increasing elastomer content, increasing average elastomer domain size was obtained. Also, it was observed that with the addition of organoclay, the elastomeric domain size increases since the clay particles reside in the elastomer phase and at the interphase between elastomer and PS. The mechanical test results showed that the nanocomposites containing 15 and 20wt% SEBS-g-MA have the optimum average domain size that results in better impact strength values without deteriorating tensile properties.
Mert, Miray. "Impact Modified Nylon 66-organoclay Nanocomposites." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608112/index.pdf.
Full textBaena, Johanna. "PROCESSING AND KINETIC STUDIES OF THE REACTIVE BLENDS OF POLY(VINYL CHLORIDE) AND THERMOPLASTIC POLYURETHANES." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1163727625.
Full textKretschek, David. "Desenvolvimento de um cabeçote de extrusão por êmbolo para polipropileno granulado visando a manufatura aditiva." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/890.
Full textUm dos processos de manufatura aditiva mais popularesse baseia na fusão e deposição do material. O princípio de funcionamento aplicado nestes equipamentos restringe o fornecimento de matéria-prima, principalmente no mercado nacional, e a gama de materiais aplicáveis. O desenvolvimento de um equipamento capaz de processar o material na forma granulada contribuiria para a popularização do processo e para a ampliação da gama de materiais disponíveis a serem utilizados. Este trabalho descreve o desenvolvimento de um cabeçote de extrusão capaz de processar polipropileno granulado e extrudá-lo em forma de filamento contínuo e controlado. Este foi projetado de forma a reduzir o efeito da degradação sobre o material. Experimentos foram conduzidos a fim de caracterizar o comportamento dimensional dos filamentos gerados e assim permitir o seu melhor controle. A degradação do material no interior do cilindro aquecido foi avaliada por ensaios de espectroscopia no infravermelho e de tração em amostras de filamentos. Os resultados dos experimentos de extrusão mostraram que os filamentos apresentam variação de vazão ao longo do comprimento extrudado, sendo que a sua largura aumenta até atingir um patamar onde estabiliza. Os ensaios de espectroscopia mostram ocorrer degradação dentro do cilindro aquecido, mas os efeitos negativos sobre a resistência mecânica dos filamentos são menos acentuados quando empregando o cabeçote projetado. Concluiu-se que o princípio de extrusão por êmbolo com alimentação granulada é viável, necessitando, no entanto, desenvolver mecanismos de controle da extrusão mais adequados ao processo.
One of the most popular additive manufacturing processes is based on fuseddeposition of the material. The principleapplied to these machines makes difficult to find suppliers of raw materials, especially in brazilian market, and narrow the variety of materials applicable. The development of equipment able to process the material in the granular form will contribute to the process popularization and extension of available material to be used. This work describes the development of an extrusion head capable to process polypropylene granules and extrudeit as continuous and controlled filament. The extrusion head was designed in order to minimize the volume of material to be fused and reduce the effect of material degradation. Experiments were conducted to characterize the dimensional behavior of the filaments generated and thus allow its better control. The material degradation inside the extrusion head was assessed by infrared spectroscopyand its negative effects over filaments strength by tensile tests.The results of the extrusion experiments showed that the filaments have flow variation along the extruded length, following an increasing curve until a value where its average stabilizes. Spectroscopy showed that degradation occurs inside the heated cylinder, but its negative effects on material strength are less intense when using the designed extrusion head. It was concluded that the extrusion plunger principle with granulated feeding is viable for Additive Manufacturing, requiring, however, better control mechanisms of the extrusion to enable the manufacture of uniform and cohesive parts.
5000
Alyamac, Elif. "Impact Modified Poly(ethylene Terephthalate)-organoclay Nanocomposites." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605092/index.pdf.
Full texts modulus and reasonable elongation at break was selected owing to its balanced mechanical properties. Thereafter, by using 5 wt. % terpolymer content, the effects of organically modified clay concentration and addition order of the components on ternary nanocomposites were systematically investigated. Mechanical testing revealed that different addition orders of the materials significantly affected mechanical properties. Among the investigated addition orders, the best sequence of component addition (PI-C) was the one in which poly(ethylene terephthalate) was first compounded with E-MA-GMA. Later, this mixture was compounded with the organoclay in the subsequent run. Young'
s modulus of not extruded pure PET increased by 67% in samples with 5 wt. % E-MA-GMA plus 5 wt. % clay loading. The highest percent elongation at break was obtained as 300%, for the addition order of PI-C, with 1 wt. % clay content, which is nearly 50 fold higher than that obtained for pure PET. In X-ray diffraction analysis, extensive layer separation associated with delamination of the original clay structure occurred in PI-C and CI-P sequences with both 1 and 3 wt. % clay contents. X-ray diffraction patterns showed that, at these conditions exfoliated structures resulted as indicated by the disappearence of any peaks due to the diffraction within the consecutive clay layers.
Ersu, Dilek. "Preparation And Characterization Of Nanocomposites With A Thermoplastic Matrix And Spherical Reinforcement." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607447/index.pdf.
Full textethylene/n-butyl acrylate/maleic anhydride (E-nBA-MAH), ethylene/glycidyl methacrylate (E-GMA) and ethylene/methyl acrylate/glycidyl methacrylate (E-MA-GMA) Lotader®
resins
as silica Cab-o-sil®
M5 fumed silica were used. All samples were prepared by means of a lab scale co-rotating twin screw extruder and injection molded into standard samples. In the first step, individual effects of filler and compatibilizers were studied in binary systems with LDPE. Then, keeping the amount of compatibilizer constant at 5%, ternary nanocomposites were prepared by adding 2 or 5% of fumed silica using different component mixing orders. Among investigated mixing orders, mechanical test results showed that the best sequences of component addition are FO1 [(LDPE+Co)+M5] and FO2 [(LDPE+M5)+Co] mixing orders. Considering the compatibilizers, E-nBA-MAH terpolymer showed the highest performance in improving the mechanical properties, E-GMA copolymer also gave satisfactory results. According to the DSC analysis, since addition of fumed silica and compatibilizer does not influence the crystallization behavior of the compositions, it is concluded that, neither fumed silica nor any of the compatibilizers have nucleation activity on LDPE. MFI test results showed that, addition of fumed silica increases the melt viscosity, decreasing MFI values of samples. This change seems to be directly proportional to fumed silica amount.
Altan, Cansu. "Preparation And Characterization Of Glass Fiber Reinforced Poly(ethylene Terephthalate)." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605216/index.pdf.
Full text#61549
m for almost all composites prepared in this study.
Kilinc, Mert. "Production And Characterization Of Boron-based Additives And The Effect Of Flame Retardant Additives On Pet-based Composites." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610635/index.pdf.
Full textboron based flame retardant additives, 3.5 mole hydrated zinc borate and boron phosphate were synthesized. Zinc borate was synthesized with the reaction of boric acid and zinc oxide in both laboratory and pilot scale reactors. Effects of reaction parameters on kinetics of reaction and final product particle size were evaluated. Boron phosphate was synthesized via dry, wet and microwave methods. In addition to the synthesized flame retardant additives, several non-halogenated flame retardant additives, which were commercially available, were also used. Composites were prepared using twin screw extruder and molded by injection molding, followed by characterization in terms of flame retardancy behavior, mechanical and thermal properties, and morphologies. Based on the results of first stage experiments, aiming to determine effective additives, different amounts and combinations of triphenyl phosphate, triphenyl phosphine oxide, zinc borate and microwave produced boron phosphate were chosen and used in PET matrix. Flame retardancy of the composites were determined by conducting horizontal burning rate and limiting oxygen index (LOI) tests. Smoke emissions during fire were also measured. According to the LOI test results, LOI of neat PET was determined as 21%, and with the addition of 5% boron phosphate and 5% triphenyl phosphate together, LOI was increased up to 36%. The smoke density analysis results implied that, boron phosphate was a successful smoke suppressant for PET matrix. In addition to flammability properties, tensile and impact properties of the composites were also improved with flame retardant additives and expecially with the addition of triphenyl phosphate.
Feng, Jingxing. "Transport Phenomena in Polymeric Blends and Multilayer Films." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1548202751756984.
Full textTijen, Seyidoglu. "Purification And Modification Of Bentonite And Its Use In Polypropylene And Linear Low Density Polyethylene Matrix Nanocomposites." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612204/index.pdf.
Full text3210), were prepared by melt compounding in the batch mixer at two different clay concentrations (2 and 5 wt %) and fixed compatibilizer/organoclay ratio (&alpha
=2.5). A commercial organoclay, I34, was also used in LLDPE based nanocomposites to make a comparison. XRD and TEM analyses of the compounds prepared by DMDA and TBHP showed mixed nanocomposite morphologies consisting of partially intercalated and exfoliated layers. Young`s modulus and tensile strength of nanocomposites prepared with DMDA and TBHP showed generally higher values compared to those of neat LLDPE, while results were the highest in the composites prepared with commercial organoclay I34. Parallel disk rheometry was used as a supplementary technique to XRD, TEM and mechanical characterizations, and it was shown to be a sensitive tool in assessing the degree of dispersion of clay layers in the polymer matrix.
Agrawal, Akash. "Examining the Effectiveness of Different Mixing Elements in the Twin Screw Compounding of Liquid Crystal Polymer and Polypropylene." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1512742062745962.
Full textPham, Thuy Linh. "Plastification en injection des polymères fonctionnels et chargés." Phd thesis, INSA de Lyon, 2013. http://tel.archives-ouvertes.fr/tel-01015839.
Full textVanin, Mirela. "Estudo das condições de extrusão reativa e suas influencias na compatibilização e propriedades da mistura poli (tereftalato de etileno) (pet)/policarbonato (pc)." [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266473.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
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Resumo: o estudo de misturas poliméricas têm crescido bastante devido à possibilidade de se obter materiais de alta performance. Muitos são os estudos sobre a mistura Poli (tereftalato de etileno)(PET)/Policarbonato(PC) , donde se tem que, esta mistura é termodinamicamente imiscível, mas com possibilidade de se conseguir compatibilizar os polímeros quando misturados no estado fundido, devido a ocorrência de reações de transesterificação. Além disso, a eficiência destas reações podem ser influenciadas pelos parâmetros de processamento. Este trabalho visa o estudo da mistura PET/PC, objetivando combinar a alta resistência térmica e mecânica do PC, com a grande utilidade do PET como polímero de engenharia. As amostras da mistura PET/PC foram confeccionadas por extrusão reativa no estado fundido, variando parâmetros de processamento como: tempo total de processamento e de cisalhamento, concentração de componentes de mistura, emprego e concentração de catalisador e reprocessamento, no equipamento Mini Max Molder e em extrusora dupla rosca. As amostras obtidas foram caracterizadas por: Viscosidade intrínseca, notando-se a possível ocorrência de reações de degradação no emprego de catalisador; Microscopia Eletrônica de Varredura, verificando-se que o aumento do tempo total de processo e do cisalhamento contribuíram para melhorar a dispersão das fases; Infravermelho por Transformada de Fourier, donde verificou-se que a eficiência das reações de transesterificação foi aumentada com o aumento do tempo de processo e de cisalhamento; e análise mecânica, por Análise Dinâmico Mecânica que permitiu observar tendência à miscibilidade da mistura PET/PC devido ao aparecimento de uma única Tg, na análise dos resultados
Abstract: The studies on polymeric mixtures increased considerably due to the possibilities of obtaining high performance materials. Many of them are about the Poly (ethylene terephthalate) (PET)/ Polycarbonate (PC) mixture, which is thermodynamically immiscible, but potentially compatible when the polymers are mixed in the molten state due to transesterification reactions. Besides, the efficiency of these reactions can be influenced by the processing parameters. This study is aimed at studying PET/PC mixture by combining the PC high mechanical and thermal resistance and the usefulness of PET as an engineering polymer. The PET/PC mixture samples were obtained by reactive extrusion in the molten state, varying processing parameters such as: total processing time, shearing time, concentration of the mixture components, utilization of a catalyzer, catalyzer concentration and reprocessing in a Mini Max Molder equipment, as well as varying screw speed in a twin-screw co-rotating extruder. The samples obtained were characterized by: intrinsic viscosity, observing the possible degradation reactions in the utilization of the catalyzer; Scanning Electron Microscopy, verifying if the increase in the processing and shearing time contributed to improve the phase dispersion; Fourier Transformed Intrared analysis was utilized to confirm the efficiency of the transesterification reactions due to the increase in the process time and shearing time; Dynamic Mechanical Analysis showed that the PET/PC mixtures were compatibilized with the appearance of a single Tg
Mestrado
Ciencia e Tecnologia de Materiais
Mestre em Engenharia Química
Rizvi, Ghaus Muhammad. "Extrusion foaming of plastic/wood-fiber composites using a chemical blowing agent." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0020/MQ45623.pdf.
Full textDesa, Stella. "Quality monitoring of recycled plastic waste during extrusion, in-line particle detection." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1995. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ45466.pdf.
Full textChan, David Tai-Wai. "Analysis of molecular orientation and internal stresses in plastic sheet extrusion process /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487596307358216.
Full textNg, Chin Yee. "Extrusion of microcellular plastic using a tandem foaming system : design, fabrication and experimentation." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10283.
Full textMizera, J., P. Maj, and B. Adamczyk-Cieslak. "Comparison of Grain Refinement in Selected Materials Subjected to Hydrostatic Extrusion." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35600.
Full textMartins, Milene Heloisa. "Formulações de misturas de polipropileno pos-consumo e virgem para processamento por injeção." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248848.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica
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Mestrado
Yapici, Guney Guven. "Severe plastic deformation of difficult-to-work alloys." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/531.
Full textКоротка, Валерія Олександрівна. "Екструзійний агрегат з модернізацією черв‘яка." Bachelor's thesis, КПІ ім. Ігоря Сікорського, 2021. https://ela.kpi.ua/handle/123456789/41797.
Full textThe purpose of development and design is analytical, design calculations using known methods, regulations, computer programs. The design and development of the extrusion unit is performed on the basis of patent research, study of scientific and technical literature, engineering and technical calculations and analytical review. The following was done: -engineered calculations for the design and development of eestruder, in accordance with the terms of reference; - the principle of operation of the extrusion unit for film plastic was studied, technical parameters and characteristics were analyzed; - on the basis of patent research the worm of the extrusion unit is modernized; - developed and designed an extrusion unit with an upgraded worm for film plastic;
Silva, Reyes Alfredo Jeampiere, and Castro Rosa Fernanda Salas. "Application of Lean Techniques to Reduce Preparation Times: Case Study of a Peruvian Plastic Company." Research India Publications, 2017. http://hdl.handle.net/10757/622530.
Full textZhang, Haiou. "Extrusion of fine-celled plastic/wood-fiber composite foams using CO¦2 as a blowing agent." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0027/MQ50426.pdf.
Full textNascimento, Jefter Fernandes do. "Estudo da processabilidade e da caracterização do Poli (acido 3-hidroxibutirico) - PHB obtido a partir da cana-de-açucar." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266531.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
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