Results 291 to 300 of about 54,117 (330)

Miscibility behaviour of ethylene vinyl acetate/Novolac blends

Polymer, 1995
Abstract Blends of ethylene vinyl acetate (EVA) resin, containing different amounts of vinyl acetate, and phenolic resin (Novolac type) were characterized by i.r. spectroscopy and differential scanning calorimetry (d.s.c.). The blends were prepared in the melt state at 130°C in a batch mixer.
Nafaa Mekhilef, Pavlos Hadjiandreou
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Crystallinity of ethylene–vinyl acetate copolymers

Journal of Applied Polymer Science, 1965
AbstractDetermination of crystallinity of ethylene–vinyl acetate copolymers according to the usual x‐ray diffraction method employed for polyethylene is very much hampered by the fact that these copolymers are usually largely amorphous and the Bragg reflections in their diffraction diagrams which are therefore broad and weak are drowned by the strong ...
Pandurang M. Kamath, Robert W. Wakefield
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Ethylene vinyl acetate and ethylene vinyl alcohol copolymer for thermal spray coating application

Progress in Organic Coatings, 2008
Abstract Ethylene vinyl acetate (EVA) copolymer with varying vinyl acetate (VAc) content, viz. 18%, 28% and 40% has been hydrolyzed using alcoholic NaOH solution. Fourier Transform Infrared Spectroscopy (FTIR) analyses of hydrolyzed polymer showed the presence of both OH group and acetate group indicating that the EVA has been partially hydrolyzed ...
S.P. Tambe, S.K. Singh, M. Patri, Dhirendra Kumar   +3 more
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Phase diagrams of ethylene-vinyl acetate copolymers

Polymer Science Series A, 2006
The miscibility of ethylene-vinyl acetate copolymers of different compositions was studied by X-ray microanalysis over a wide temperature range, and phase diagrams were obtained. The dependences of critical temperature and compositions of coexisting phases on the difference in compositions of blended copolymers were determined.
A. D. Aliev, M. A. Vokal’, A. E. Chalykh, V. K. Gerasimov   +3 more
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Shape memory effect of ethylene-vinyl acetate copolymers

Journal of Applied Polymer Science, 1999
Crosslinked ethylene–vinyl acetate (EVA) copolymers with VA content of 28% by weight were prepared by a two-step method by evenly dispersing the crosslinking agent (dicumyl peroxide) into the EVA matrix and then crosslinking at elevated temperatures. The crosslinking features of the samples were analyzed by Soxhlet extraction with xylene and dynamic ...
Fengkui Li, Wei Zhu, Xian Zhang, Chuntian Zhao, Mao Xu   +4 more
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Peroxide crosslinking of ethylene–vinyl acetate copolymer

Journal of Applied Polymer Science, 1977
AbstractThe work reported here concerns the peroxide crosslinking of ethylene–vinyl acetate rubber. Calculated values for scission‐to‐crosslinking ratios are higher for EVA than for low‐density polyethylene. In the temperature range from 150 to 200°C at a constant peroxide content, a rise in temperature results in a decrease in the obtained gel content.
M. Narkis, J. Miltz
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Ageing characteristics of ethylene-vinyl acetate copolymer and ethylene-vinyl acetate/ carbon black mixture

2020
IV ÖZET Bu çalışmada, değişik endüstrilerde geniş bir uygulama alam olan etilen-vinil asetat kopolimeri (EVA) (% 13 VA) ve EVA/karbon siyahı (EVA/CB) (% 13 VA ve % 1 CB)'in yaşlanma karakteristikleri incelenmiştir. Doğa şartlarını simüle etmek amacıyla, örnekler 85°C'de havada 30 haftaya kadar, ve 259 nm'de havada UV ışık altında 400 ...
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Electrical properties of ethylene-vinyl acetate copolymers

Polymer Science U.S.S.R., 1973
7. A. REMBAUM, A. M. HERMANN, F. E. STEWART and F. GUTMANN, J. Amer. Chem. Soc. 78: 513, 1969; A. RE51BAUM, W. BAUMGARTHER and A. EISENBERG, J. Polymer Sei. B6: 159, 1968 8. H. NO510RI, 5I. HATANO and S. KAMBARA, J. Chem. See. Japan, Industr. Chem. Sec. 67: 1608, 1964 9. J. tL LUPINSKI, K. D. KOPPLE and J. J. HERTZ, J. Polymer Sci.
M.P. Eidel'nant, F.I. Duntov, V.Kh. Krundel, B.I. Sazhin   +3 more
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Ethylene-Vinyl Acetate Copolymer

2009
Abstract Acronyms, Trade Names EVA; Elvax® (DuPont); Levapren® (Lanxess); Microthene®, Ultrathene®, Plexar (Equistar Chemicals); Airflex® (Air Products); Novatec® (Japan Polychem) Class Chemical Copolymers Film extrusion, packaging, wire and cable insulation, adhesives, coatings, and compounding.
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Flow properties of ethylene/vinyl acetate copolymers

Die Makromolekulare Chemie, 1981
AbstractA series of linear and branched fractions of an ethylene/vinyl acetate (EVA) copolymer is characterized by viscometry and gel permeation chromatography (GPC) exclusively. Characterization results are applied to the study of the influence of branching on flow properties of concentrated solutions of EVA fractions.
Juan J. Iruín, Gonzalo M. Guzmán, Javier Ansorena   +2 more
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