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Articoli di riviste sul tema "Epoxy compounds"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Rudawska, Anna. "Experimental Study of Mechanical Properties of Epoxy Compounds Modified with Calcium Carbonate and Carbon after Hygrothermal Exposure." Materials 13, no. 23 (2020): 5439. http://dx.doi.org/10.3390/ma13235439.

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The objective of this paper is to analyze the effects of hygrothermal exposure on the mechanical properties of epoxy compounds modified with calcium carbonate or carbon fillers. In addition, comparative tests were carried out with the same parameters as hygrothermal exposure, but the epoxy compounds were additionally exposed to thermal shocks. The analysis used cylindrical specimens produced from two different epoxy compounds. The specimens were fabricated from compounds of epoxy resins, based on Bisphenol A (one mixture modified, one unmodified) and a polyamide curing agent. Some of the epoxy

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2

Rudawska, Anna. "Mechanical Properties of Epoxy Compounds Based on Unmodified Epoxy Resin Modified with Boric Acid as an Antiseptic." Materials 17, no. 1 (2024): 259. http://dx.doi.org/10.3390/ma17010259.

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The objective of this study was to compare the selected mechanical properties of epoxy compounds based on an unmodified epoxy resin with those containing an antiseptic as a modifying agent. Experiments were carried out on twelve epoxy compounds made of an epoxy resin based on bisphenol A (BPA) with a basic epoxide amount of 0.48–0.51 mol/100 g. Three curing agents were used: one polyamide (a polyaminoamide curing agent) and two amines (one was an adduct of aliphatic amine and aromatic glycidyl ether, and the other was an adduct of cycloaliphatic amine). The epoxy compounds were modified by add

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3

Saiki, Hiroyuki, Yasuo Marumo, Hiroshi Nishitake, Masahiro Hazama, and Fuminori Sakata. "Deformation Characteristics of Epoxy Compounds for Semiconductor Integrated Circuits." Advanced Materials Research 15-17 (February 2006): 599–603. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.599.

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Tensile tests of epoxy molding compounds were carried out using specimens composed of epoxy molding compounds which are transfer molded and post cured. The mechanical characteristics of the epoxy molding compounds change significantly due to changes in temperature and strain rate. In addition, the effect of nonlinear viscosity is large in both elastic and plastic regions. The characteristics of the visco-elastic-plastic behaviors of the epoxy molding compounds were examined. The behavior characteristics of the epoxy molding compounds during loading and unloading were shown in detail.

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4

Mikroyannidis, John A. "Self-curing epoxy compounds." Journal of Applied Polymer Science 41, no. 1112 (1990): 2613–24. http://dx.doi.org/10.1002/app.1990.070411109.

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5

Matsiura, Milana, Vira Savchenko, Oleksandr Petrashov, Valentyna Povzlo, and Oleksii Voskoboinik. "MODERN APPROACHES TO ENHANCING THE EFFICIENCY OF EPOXY-BASED ANTICORROSION COATINGS." New Materials and Technologies in Metallurgy and Mechanical Engineering, no. 2 (June 16, 2025): 15–21. https://doi.org/10.15588/1607-6885-2025-2-2.

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Purpose. To summarize and critically analyze published scientific data on the modification of epoxy polymer-based coatings in order to improve their anticorrosive properties. Research methods. The selection of literature sources was carried out using the bibliographic databases Google Scholar and Scopus. The keywords used for the search included: “epoxy resins”, “epoxy polymers”, “epoxy coatings”, “anticorrosion effect/activity”, and “corrosion inhibitors” in both Ukrainian and English. Results. A critical analysis of 22 published papers on modern approaches to improving the performance of epo

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6

Chen, Li, and Ying Huang. "Modification of Epoxy Molding Compounds with Epoxy-terminated Polydimethylsiloxane." Chinese Journal of Applied Chemistry 12, no. 5 (1995): 67–72. http://dx.doi.org/10.3724/j.issn.1000-0518.1995.5.6772.

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7

Suojalehto, Hille, Joaquin Sastre, Emilia Merimaa, Irmeli Lindström, and Katri Suuronen. "Occupational Asthma From Epoxy Compounds." Journal of Allergy and Clinical Immunology: In Practice 7, no. 1 (2019): 191–98. http://dx.doi.org/10.1016/j.jaip.2018.07.023.

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8

Rudawska, Anna, and Mariaenrica Frigione. "Effect of Diluents on Mechanical Characteristics of Epoxy Compounds." Polymers 14, no. 11 (2022): 2277. http://dx.doi.org/10.3390/polym14112277.

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The aim of this work is to assess the influence of different commercial diluents on some mechanical properties of two bisphenolic epoxy compounds, cold-cured by a polyamide curing agent, to be employed as epoxy structural adhesives for building and industrial applications. The diluents under analysis were epoxy, bituminous, nitro, acrylic and extraction. The choice of these products was made on the basis of their wide commercial availability as diluents for epoxies used as adhesives and in different industrial and construction applications. The diluents were all added in small proportions, i.e

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9

Karandashov, Oleg, and Viacheslav Avramenko. "Studies of Thermal Stability of Epoxy Compounds for Glass-Fiber Pipes." Chemistry & Chemical Technology 11, no. 1 (2017): 61–64. http://dx.doi.org/10.23939/chcht11.01.061.

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10

Egunova, T. N., and N. I. Baurova. "Investigation of operational properties of epoxy-sand compounds used in repair of machines." Technology of Metals, no. 2 (February 2023): 11–18. http://dx.doi.org/10.31044/1684-2499-2023-0-2-11-18.

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The results of a series of experimental studies of the properties of epoxy-sand compounds used in the repair of components of road construction machines are presented. The influence of the preparation of a dispersed filler on the properties and structure of the compound has been evaluated. The resistance of the epoxy-sand compounds to the effects of aggressive media (anti-icing materials) was investigated. The values of the friction coefficients of the epoxy-sand compound were determined. It was found that reducing the filler concentration provided the best resistance of epoxy-sand compounds t

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11

Gemuev, Sh I., and A. I. Gemuev. "Advanced technology of epoxy molding compounds production and strength characteristics of developed epoxy molding compounds." Polymer materials and technologies 2, no. 3 (2016): 73–75. http://dx.doi.org/10.32864/polymmattech-2016-2-3-73-75.

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12

Waechter, John M., and Gauke E. Veenstra. "ChemInform Abstract: Epoxy Compounds: Aromatic Diglycidyl Ethers, Polyglycidyl Ethers, Glycidyl Esters, and Miscellaneous Epoxy Compounds." ChemInform 33, no. 42 (2010): no. http://dx.doi.org/10.1002/chin.200242272.

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13

Ladaniuc, Magdalena Adriana, Gheorghe Hubca, Raluca Gabor, Cristian Andi Nicolae, Elvira Alexandrescu, and Teodor San. "Epoxy Composites Based on Resins Having High Flexibility Reinforced with Functionalized Carbon Nanotubes." Materiale Plastice 54, no. 1 (2017): 125–28. http://dx.doi.org/10.37358/mp.17.1.4800.

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The present paper was aimed at achieving a study on carbon nanotubes-reinforced composites and involved obtaining and characterization of composites based on epoxy compounds modified with hydroxyl groups-containing compounds (glycols). In order to obtain high flexibility epoxy resins-based composites, carboxyl- functionalized MWCNTs were used as filler at a concentration of 0.5 %. The influence of the weight concentration in CNTs on the mechanical and thermo -mechanical properties of the epoxy compounds was evaluated in comparison to mechanical properties of the DGEBA standard composites reinf

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14

Jolanki, Riitta, Lasse Kanerva, Tuula Estlander, Kyllikki Tarvainen, Helena Keskinen, and Maj-Len Henriks-Eckrmaan. "Occupational dermatoses from epoxy resin compounds." Contact Dermatitis 23, no. 3 (1990): 172–83. http://dx.doi.org/10.1111/j.1600-0536.1990.tb04779.x.

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15

Shtrombakh, Ya I., P. A. Platonov, N. S. Lobanov, O. K. Chugunov, V. P. Aleksandrov, and O. A. Zinov’ev. "Epoxy Compounds for Immobilizing Radioactive Wastes." Atomic Energy 98, no. 5 (2005): 331–33. http://dx.doi.org/10.1007/s10512-005-0213-7.

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16

Tosti, Antonella, Liliana Guerra, Colombina Vincenzi, and Anna Maria Peluso. "Occupational Skin Hazards from Synthetic Plastics." Toxicology and Industrial Health 9, no. 3 (1993): 493–502. http://dx.doi.org/10.1177/074823379300900308.

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Epoxy and acrylic resins have numerous industrial applications but are also widely used in the household environment. These compounds are presently one of the most important sources of occupational contact dermatitis. Contact sensitization to epoxy resins is usually caused by the resin itself but hardeners or other additives, such as reactive diluents, plasticizers, fillers and pigments, can occasionally be responsible. Since completely cured epoxy resins are not sensitizers, epoxy resin sensitization is always due to the presence, in the final polymer, of uncured allergenic low molecular weig

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17

Kim, Young-Hun, Jeong Ju Baek, Ki Cheol Chang, Baek Soo Park, Won-Gun Koh, and Gyojic Shin. "Effect of Synthetic Low-Odor Thiol-Based Hardeners Containing Hydroxyl and Methyl Groups on the Curing Behavior, Thermal, and Mechanical Properties of Epoxy Resins." Polymers 15, no. 13 (2023): 2947. http://dx.doi.org/10.3390/polym15132947.

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A novel thiol-functionalized polysilsesqioxane containing hydroxyl and methyl groups was synthesized using a simple acid-catalyzed sol–gel method to develop an epoxy hardener with low odor, low volatile organic compound (VOC) emissions, and fast curing at low temperatures. The synthesized thiol-based hardeners were characterized using Fourier transform infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis (TGA), and gel permeation chromatography and compared with commercially available hardeners in terms of odor intensity and VOC emissions using the air dilution olfacti

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18

Nogueira, Encarna, Enrique Guitián, Luis Castedo, and Alfonso Castiñeiras. "Tandem Benzyne Cycloadditions Leading to Polycyclic Compounds." Australian Journal of Chemistry 50, no. 7 (1997): 751. http://dx.doi.org/10.1071/c96083.

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Deoxykojic acid (1) reacts with two benzyne molecules to afford 9-methyl-7-phenoxy-5,9-dihydro-5,9-epoxy-6H-benzocyclohepten-6-one (2) in 33% yield. Maltol (5) reacts with three molecules of benzyne to afford (4bα,5β,10β,11aα)-10-methyl-11a-phenoxy-4b,5,10,11a-tetrahydro-5,10-epoxy-11H- benzo[a]benzo[3,4]cyclobuta[1,2-d]cyclohepten-11-one (6a) in 36% yield.

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19

Liu, Ying-Ling, Yu-Lo Lin, Chih-Ping Chen, and Ru-Jong Jeng. "Preparation of epoxy resin/silica hybrid composites for epoxy molding compounds." Journal of Applied Polymer Science 90, no. 14 (2003): 4047–53. http://dx.doi.org/10.1002/app.13159.

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20

Nistor, Alexandru, Agneta Maria Pusztai, Mircea Constantin Sora, Bogdan Hoinoiu, Mihai Ionac, and Petru Matusz. "Training in Flap Harvesting using Corrosion Casted Pig Latissimus Dorsi Muscle Flaps Choosing the Optimal Plastic Compound for Corrosion Casting." Materiale Plastice 54, no. 3 (2017): 578–80. http://dx.doi.org/10.37358/mp.17.3.4900.

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Plastic compounds have been used for several decades to generate anatomical constructs for the training of new surgeons and medical students alike. The present study seeks to highlight the advantages and disadvantages of two different plastic compounds (Technovit 7143 and Epoxi BIODURÒE12) used to create corrosion casts of the vascular branching patterns in free muscle flaps. Porcine latissimus dorsi muscle free flaps were used in this study to create corrosion casts of their vascular branching tree by injecting the two different plastic compound into the main arterial supply. The casts genera

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21

Chen, Chien-Han, Shih-Huang Tung, Ru-Jong Jeng, Mahdi M. Abu-Omar, and Ching-Hsuan Lin. "A facile strategy to achieve fully bio-based epoxy thermosets from eugenol." Green Chemistry 21, no. 16 (2019): 4475–88. http://dx.doi.org/10.1039/c9gc01184f.

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22

Uschitsky, M., and E. Suhir. "Moisture Diffusion in Epoxy Molding Compounds Filled With Particles." Journal of Electronic Packaging 123, no. 1 (1998): 47–51. http://dx.doi.org/10.1115/1.1325009.

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Mechanical reliability of epoxy molding compounds in plastic packages of integrated circuits (IC) is greatly affected by the compound ability to absorb moisture. Accordingly, the objective of the study is to evaluate the effect of moisture sorption on the mechanical properties of the compound. Experimental studies were conducted to evaluate the moisture diffusion in compounds with different, from moderate to high, concentration of silica and alumina nitride fillers. The weight-gained analysis indicated that the moisture diffusion was of non-Fickian type and depended mainly on the specimen’s re

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23

Donato, R. K., M. Perchacz, S. Ponyrko, et al. "Epoxy–silica nanocomposite interphase control using task-specific ionic liquids via hydrolytic and non-hydrolytic sol–gel processes." RSC Advances 5, no. 111 (2015): 91330–39. http://dx.doi.org/10.1039/c5ra18387a.

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Carboxylic-functionalized task-specific imidazolium ionic liquids (carboxylic-IL) presented selective high reactivities with epoxy-functionalized compounds, even in highly complex epoxy–silica nanocomposite systems.

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24

Kayed, Akram M., EL Sayed M. Elghaly, and Atef A. El-Hela. "New Epoxy Megastigmane glucoside from Dactyloctenium aegyptium L.P.Beauv Wild (Crowfootgrass)." Journal of Scientific and Innovative Research 4, no. 6 (2015): 237–44. http://dx.doi.org/10.31254/jsir.2015.4605.

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Phytochemical investigation of Dactyloctenium aegyptium L. Wild herbrevealed the isolation and identification of three new compounds5-hydroxypyrimidine- 2,4 (3H,5H)- dione [6],6'Glyceryl asysgangoside[8],and 2 amino, 2 methyl,(5,6 di hydroxymethyl ), 1,4 dioxane [11]were isolated for the first time from nature in addition tonine known compounds, P.hydroxy benzaldhyde[1], tricin [2],P.hydroxy benzoic acid[3], vanillic acid [4], β-sitosterol-3-O-β-D-glucoside [5], asysgangoside[7] adenine[9], uridine[10] and sucrose[12]The structural elucidations of isolated compounds were established on the bas

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25

Svoboda, Jiří, Zuzana Kocfeldová, and Jaroslav Paleček. "Reaction of 4-substituted benzaldehydes and acetophenones with chloroacetonitrile." Collection of Czechoslovak Chemical Communications 53, no. 4 (1988): 822–32. http://dx.doi.org/10.1135/cccc19880822.

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Under conditions of phase-transfer catalysis or in homogeneous solution of potassium tert-butoxide the title compounds give stereoisomeric mixtures of substituted 2,3-epoxy nitriles III and IV. Alkaline hydrolysis of epoxy nitriles IV afforded the corresponding 2-arylpropanals in low yields. On treatment with methanol and potassium carbonate, epoxy nitriles III and IV were converted into epoxy esters in good yields.

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26

Hao, Jianghua, Kun Yang, Jiaye Wu, Mingzhu Wu, and Ying Li. "Overview of Recent Developments in Composite Epoxy Resin in Organic Coating on Steel (2020–2024)." Materials 18, no. 7 (2025): 1531. https://doi.org/10.3390/ma18071531.

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Epoxy resin, widely recognized for its excellent performance, is extensively applied in the anti-corrosion field of steel. Continuous enhancement of the anti-corrosion performance of epoxy resins to satisfy more stringent requirements has become a current hot topic of interest in both scientific and industrial circles. This review focuses on recent advancements in composite epoxy resin coatings for steel from 2020 to 2024, emphasizing improvements in anti-corrosion performance through various additive modifications. Modification methods are categorized into metal-based compounds, organic compo

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27

Staszko, Sebastian, Marzena Półka, and Paweł Kozikowski. "Analysis of the Influence of Organophosphorus Compounds and of Aluminium and Magnesium Hydroxides on Combustion Properties of Epoxy Materials." Energies 15, no. 18 (2022): 6696. http://dx.doi.org/10.3390/en15186696.

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This paper presents the influence of selected flame retardant additives on heat release rate and thermokinetics properties of epoxy materials made of epoxy resin—Epidian 5. The epoxy resin underwent flame retardant modification with the use of organophosphorus compounds (Roflam F5, Roflam B7) and Al(OH)3, Mg(OH)2. The fire characteristics of the analysed epoxy resin were determined using the cone calorimeter method, and thermal analysis of epoxy resin and the surface morphology of the analysed epoxy materials was with the use of an SEM microscope with an EDS attachment. The lowest value of the

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28

Wolok, Eduart, and Fahriadi Pakaya. "Experimental Investigation of Epoxy/Poly(amino amide)/Phthalic Anhydride: Mechanical Properties and Thermal Stability." Journal of Computational and Theoretical Nanoscience 17, no. 6 (2020): 2820–26. http://dx.doi.org/10.1166/jctn.2020.8946.

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Epoxy resin is one of materials engineering that is widely applied especially in the shipping industry, aviation, automotive, and others. With a variety of applications led many scientists in the field of materials engineering work to improve the properties and ability of the epoxy either by changing the structure of epoxy. One way to improve the properties of epoxy is adding certain compounds that can react and able to change the properties of the epoxy according to the requirement. In this study, to improve the properties of the epoxy, then added phthalic anhydride compounds. The epoxy was c

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29

Rudawska, Anna. "Mechanical Properties of Epoxy Compounds Based on Bisphenol a Aged in Aqueous Environments." Polymers 13, no. 6 (2021): 952. http://dx.doi.org/10.3390/polym13060952.

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(1) Background: The aim of the work is to determine the influence of selected aqueous environments of various types of liquids on the strength of adhesive compositions prepared from epoxy resin based on bisphenol A combined with two different curing agents: tritethylenetetramine and polyaminoamide C. (2) Methods: The cured epoxy adhesive compounds samples were seasoned in four aqueous environments of the liquid: rainwater, demineralized water, tap water, and a sweetened drink. Three variants of the aging time in the above-mentioned operating environments were adopted: one month, two months, an

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30

Gotlib, Еlena M., Anh Nguyen, and Аlla G. Sokolova. "Modifying epoxy polymers by cyclic carbonates of epoxidated plant oils." Vestnik MGSU, no. 12 (December 2018): 1491–98. http://dx.doi.org/10.22227/1997-0935.2018.12.1491-1498.

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Introduction. Application of renewable raw materials for manufacturing non-toxic components of polymer materials is of great practical interest. Cyclic carbonates on the base of epoxidated rubber tree oil could be seen as a promising alternative of fossil fuels. The ability of compounds containing cyclic carbonates to interact with primary amines and to form urethane and hydroxyl groups makes them rather efficient modifiers of amine-toughened epoxy compounds on the base of low-molecular diane oligomers. Introduction of cyclic carbonates enhances impact behavior of epoxy materials as well as th

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31

Li, Hai Yan, and Chuan Hai Xie. "Epoxy Curing System with Liquid 1,3-Bis(3-aminopropyl) tetramethyl Disiloxane as Curing Agent for Advanced Electronic Package." Advanced Materials Research 79-82 (August 2009): 2135–38. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.2135.

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, 1,3-bis(3-aminopropyl) tetramethyl disiloxane (DS) is used as liquid epoxy curing agent of epoxy molding compounds(EMCs) for high-reliability semiconductor devices. Experimental results indicated that DS could be effectively used as epoxy curing agent and greatly lower the viscosity of epoxy system, in which way, the coefficient of thermal expasion(CTE) of EMCs can be lowered effectively by increasing the filler loading. The concentration of DS strongly affected the mechanical properties of the thermally cured epoxy composites. As expected, the flexural modulus of epoxy composite decreased a

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32

Sag, Jacob, Daniela Goedderz, Philipp Kukla, Lara Greiner, Frank Schönberger, and Manfred Döring. "Phosphorus-Containing Flame Retardants from Biobased Chemicals and Their Application in Polyesters and Epoxy Resins." Molecules 24, no. 20 (2019): 3746. http://dx.doi.org/10.3390/molecules24203746.

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Phosphorus-containing flame retardants synthesized from renewable resources have had a lot of impact in recent years. This article outlines the synthesis, characterization and evaluation of these compounds in polyesters and epoxy resins. The different approaches used in producing biobased flame retardant polyesters and epoxy resins are reported. While for the polyesters biomass derived compounds usually are phosphorylated and melt blended with the polymer, biobased flame retardants for epoxy resins are directly incorporated into the polymer structure by a using a phosphorylated biobased monome

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33

Trofimov, D. A., S. I. Shalgunov, and I. D. Simonov-Emel’yanov. "Desorption of Inactive Solvent from Epoxy Compounds." Polymer Science, Series D 14, no. 2 (2021): 197–204. http://dx.doi.org/10.1134/s1995421221020350.

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Li, Lingling, Ying Li, Xia Wang, and Qingzhi Dong. "Synthesis and application of fluorinated epoxy compounds." Emerging Materials Research 4, no. 1 (2015): 102–7. http://dx.doi.org/10.1680/emr.14.00035.

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Skoet, Rikke, Carsten Tollund, and Poul Erik Bloch-Thomsen. "Epoxy Contact Dermatitis due to Pacemaker Compounds." Cardiology 99, no. 2 (2003): 112. http://dx.doi.org/10.1159/000069721.

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Gaydou, Emile M., Jacqueline Smadja, Claude Lageot, and Robert Faure. "Sesquiterpene Epoxidation: Rearrangement of (+)-Ledene Epoxy Compounds." Journal of Agricultural and Food Chemistry 44, no. 7 (1996): 1840–46. http://dx.doi.org/10.1021/jf950706q.

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Şen, N., Y. Kar, and S. Kurbanov. "Alkylation of pyridinecarbaldehyde oximes with epoxy compounds." Russian Journal of Organic Chemistry 43, no. 3 (2007): 449–53. http://dx.doi.org/10.1134/s1070428007030220.

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Kas’yan, L. I., A. O. Kas’yan, and E. A. Golodaeva. "Methods and mechanisms of epoxy compounds reduction." Russian Journal of Organic Chemistry 44, no. 2 (2008): 153–83. http://dx.doi.org/10.1134/s1070428008020012.

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39

Wereszczak, Andrew A., Timothy G. Morrissey, Charles N. Volante, et al. "Thermally Conductive MgO-Filled Epoxy Molding Compounds." IEEE Transactions on Components, Packaging and Manufacturing Technology 3, no. 12 (2013): 1994–2005. http://dx.doi.org/10.1109/tcpmt.2013.2281212.

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40

Jain, R. K., and S. Chandra. "Speciality epoxy resins derived from heterocyclic compounds." Pigment & Resin Technology 19, no. 2 (1990): 7–12. http://dx.doi.org/10.1108/eb042693.

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41

Kjeć-Swierczynska, Marta. "Allergy to epoxy compounds over a decade." Contact Dermatitis 32, no. 3 (1995): 180. http://dx.doi.org/10.1111/j.1600-0536.1995.tb00819.x.

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GRECHINA, N. V., L. V. MEL'NIK, and S. I. KRYUKOV. "ChemInform Abstract: Hydrogenation of Unsaturated Epoxy Compounds." ChemInform 24, no. 47 (2010): no. http://dx.doi.org/10.1002/chin.199347102.

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43

Rudawska, Anna, Katarzyna Sarna-Boś, Adrianna Rudawska, Ewa Olewnik-Kruszkowska, and Mariaenrica Frigione. "Biological Effects and Toxicity of Compounds Based on Cured Epoxy Resins." Polymers 14, no. 22 (2022): 4915. http://dx.doi.org/10.3390/polym14224915.

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The aim of this work was to investigate selected biological and toxicity properties of cured epoxy resin-based compounds based on a bisphenol A epoxy resin, cold-cured by a polyamide and containing two types of metal powders (aluminum and copper). This study involved cytotoxicity analysis, pH measurements, absorbance measurements and sterilization. The cytotoxicity analysis was conducted to determine the harmful degree of the cured epoxy resin. Aimed at identifying toxic agents in cured compounds, the cytotoxicity analysis involved absorbance measurements in an entire wavelength range. Cytotox

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Balaeva, S. M., Dzhul’etta A. Beeva, Zh T. Balaeva, N. M. Mirzoeva, and A. A. Kyarov. "Epoxy Sulfur Containing Olygomers for Fire-Resistant Compounds Based on 2,2di-(4-Oxyphenil)Sulfone." Key Engineering Materials 899 (September 8, 2021): 287–91. http://dx.doi.org/10.4028/www.scientific.net/kem.899.287.

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The article presents information on the synthesis of epoxy oligomers based on 2,2-di-(4-hydroxyphenyl) sulfone (DODPS) and hexachloroethane (HCE). We showed the results of a study of the adhesive properties and fire resistance of epoxy polymers. The synthesized sulfur-containing epoxy oligomers have a reasonably low viscosity and high fire resistance. Casting compounds obtained on their basis have improved performance characteristics.

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Liu, Zhang, Wu, et al. "Four New ent-Kaurane Diterpene Glycosides from Isodon henryi." Molecules 24, no. 15 (2019): 2736. http://dx.doi.org/10.3390/molecules24152736.

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Abstract (sommario):

To obtain diterpene glycosides from an aqueous extract of the aerial parts of Isodon henryi and further investigate their cytotoxicities, in this study, a total of seven compounds were isolated, including six ent-kaurane diterpene glycosides (1–6) and one diterpene aglycon (7). Among the seven ent-kaurane diterpenes obtained, four were novel compounds, including ent-7,20-epoxy- kaur-16-en-1α,6β,7β,15β-tetrahydroxyl-11-O-β-d-glucopyranoside (1), ent-7,20-epoxy-kaur-16-en- 6β,7β,14β,15β-tetrahydroxyl-1-O-β-d-glucopyranoside (2), ent-7,20-epoxy-kaur-16-en-6β,7β,15β- trihydroxyl-1-O-β-d-glucopyran

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Babkin, V. A., D. S. Andreev, E. S. Titova, et al. "CALCULATION OF THE ELECTRONIC STRUCTURE OF SOME EPOXY MOLECULES BY THE DFT METHOD." IZVESTIA VOLGOGRAD STATE TECHNICAL UNIVERSITY, no. 12(259) (December 21, 2021): 32–34. http://dx.doi.org/10.35211/1990-5297-2021-12-259-32-34.

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Abstract (sommario):

In this work, we performed a quantum-chemical calculation of some epoxy molecules: 1,2-epoxy-butene, 1,2-epoxy-2-methylpropane, 1,2 epoxyethane by the density functional theory DFT. An optimized geometric and electronic structure of these compounds is obtained. It was found that the studied epoxides belong to the class of very weak СH-acids (pKa = 28-30).

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Blanco, Maria C., Alirio Palma, Justo Cobo, and Christopher Glidewell. "Nine closely related tetrahydro-1,4-epoxy-1-benzazepines carrying pendant heterocyclic substituents: hydrogen-bonded supramolecular assembly in zero, one and two dimensions." Acta Crystallographica Section C Crystal Structure Communications 68, no. 3 (2012): o131—o140. http://dx.doi.org/10.1107/s010827011200707x.

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Abstract (sommario):

The structures are reported of nine closely related tetrahydro-1,4-epoxy-1-benzazepines carrying pendant heterocyclic substituents, namely: 2-exo-(5-nitrofuran-2-yl)-2,3,4,5-tetrahydro-1,4-epoxy-1H-1-benzazepine, C14H12N2O4, (I), 7-fluoro-2-exo-(1-methyl-1H-pyrrol-2-yl)-2,3,4,5-tetrahydro-1,4-epoxy-1H-1-benzazepine, C15H15FN2O, (II), 7-fluoro-2-exo-(5-methylfuran-2-yl)-2,3,4,5-tetrahydro-1,4-epoxy-1H-1-benzazepine, C15H14FNO2, (III), 7-fluoro-2-exo-(3-methylthiophen-2-yl)-2,3,4,5-tetrahydro-1,4-epoxy-1H-1-benzazepine, C15H14FNOS, (IV), 7-fluoro-2-exo-(5-methylthiophen-2-yl)-2,3,4,5-tetrahydro-

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Trinh, Thi Thanh Van, Mai Anh Nguyen, Van Nam Vu, et al. "Ergostane steroids from <i>Aspergillus</i> sp. M904 in Vietnam." Vietnam Journal of Marine Science and Technology 24, no. 4 (2024): 419–28. https://doi.org/10.15625/1859-3097/22128.

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Seven ergostane steroids were isolated from the cultures of Aspergillus sp. M904, an endophytic fungus isolated from the marine sediment sample collected at a depth of ten meters in Binh Dinh, Vietnam. These compounds include 5α,6α-epoxy-(22E,24R)-ergosta-8(14),22-diene-3β,7α-diol (1), 5α,6α-epoxy-(22E,24R)-ergosta-8(9),22-diene-3β,7α-diol (2), ergosterol (3), ergosterol peroxide (4), 3β,5α,6α-trihydroxy-ergosta-7,22-diene (5), 3β,5α,9α-trihydroxy-ergosta-7,22-diene-6-one (6), 3β-hydroxy-5α,9α-epoxy-ergosta-7,22-dien-6-one (7). Their structures were identified through MS and NMR data analyses.

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Anjari, Intan Hawina, Desi Harneti, Kindi Farabi, et al. "Cytotoxic Dammarane-Type Triterpenoids from <i>Aglaia cucullata</i> Peel Fruit." Indonesian Journal of Chemistry 24, no. 1 (2024): 67. http://dx.doi.org/10.22146/ijc.83694.

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Abstract (sommario):

Four triterpenoids, known as dammarane-type, dammaradienone (1), 20(S),25-epoxy-5α-dammar-20-en-3-one (2), 20(S)-5α-dammar-24-en-3α,20-diol-3-acetate (3) and 3α-acetyl-20S,24S-epoxy-25-hydroxydammarane (4), were isolated from Aglaia cucullata peel fruit. The structures of isolated compounds were identified based on their HR-TOFMS data and extensive NMR spectroscopic analysis, as well as compared with literature data. Compounds 1-4 were assessed for cytotoxic effects against HeLa cervical and B16-F10 melanoma skin cancer cells. All compounds showed moderate to weak activity against B16-F10 canc

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Shareef AbdulRazaq, Jaafar, Abdul Kareem F. Hassan, and Nuha Hadi Jasim Al Hasan. "Epoxy–Silica Functionally Graded Materials: A Review." Basrah journal for engineering science 23, no. 2 (2023): 26–33. http://dx.doi.org/10.33971/bjes.23.2.4.

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Abstract (sommario):

This article provides an overview of the studies that have been conducted on the characteristics of epoxy resins containing various types of silica nanoparticles and microparticles, as well as their performance in the industrial application of functionally graded materials (FGMs). Silica nanoparticles and microparticles are used to create epoxy resins in order to improve various properties, such as thermal stability, adhesiveness, electrical conductivity, strength, modulus, and toughness. This review examines the literature that has been published in the last decade, compares the results, focu

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