Results 171 to 180 of about 19,112 (200)
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Ageing of EPDM—I: Photo and thermal stability of EPDM hydroperoxides
Polymer Degradation and Stability, 1996Abstract EPDM hydroperoxides photogenerated by singlet oxygen were decomposed both by UV (λ ≥ 300 nm) and thermal (85 °C) irradiation under vacuum. The peroxy radical formation was followed by performing photolysis at −60 °C directly in the cavity of an ESR spectrometer.
G. Teissedre +3 more
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Crystallinity in EPDM terpolymers
British Polymer Journal, 1979AbstractThe crystallinity of a series of ‘medium‐high’ green strength EPDM terpolymers has been examined by X‐ray diffraction and thermal analysis. It has been found that the crystallinity of such materials can vary from 0.20% as measured by thermal analysis, and depends on the E:P ratio in the polymer.
Marianne Gilbert +2 more
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Rubber Chemistry and Technology, 2012
ABSTRACT EPDM is the designation given for a saturated polymer chain of the polymethylene type, consisting of ethylene, propylene, and diene. It has been and continues to be one of the most widely used and rapidly growing synthetic rubbers. Technology development has been driven by novel catalysts and processes that have expanded the range of ...
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ABSTRACT EPDM is the designation given for a saturated polymer chain of the polymethylene type, consisting of ethylene, propylene, and diene. It has been and continues to be one of the most widely used and rapidly growing synthetic rubbers. Technology development has been driven by novel catalysts and processes that have expanded the range of ...
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Polypivalolactone grafts on EPDM
Journal of Polymer Science: Polymer Chemistry Edition, 1978AbstractRandom copolymers of ethylene, propylene, and 1,4‐hexadiene (EPDM) were carboxylated by reaction with thioglycolic acid or with maleic anhydride. Treatment of these polymers in tetrahydrofuran solution with tetrabutylammonium hydroxide generated carboxylate anions, which initiated the graft polymerization of pivalolactone.
Richard C. Thamm, Warren H. Buck
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EPDM/modified halloysite nanocomposites
Applied Clay Science, 2010Abstract Halloysite nanotubes (HNTs) were modified by γ-methacryloxypropyl trimethoxysilane (MPS) to improve their dispersion in ethylene propylene diene monomer (EPDM). The EPDM/HNT nanocomposites were prepared by mixing 0, 5, 10 and 30 parts per hundred rubber (phr) of HNTs with EPDM on a two-roll mill.
Pooria Pasbakhsh +3 more
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The Compatibilization of EPDM/SBR Blends by EPDM-Graft-Styrene Copolymer
Polymer-Plastics Technology and Engineering, 2005Ethylene propylene diene rubber (EPDM) and styrene butadiene rubber (SBR) blends were compatibilized by a graft copolymer EPDM-graft-styrene. This compatibilizer was prepared by gamma radiation induced grafting of EPDM with styrene monomer. The compatibilized blends were evaluated by scanning electron microscope and dielectric properties.
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Journal of Applied Polymer Science, 1987
AbstractThe effect of oxidative and thermal aging of EPDM raw rubber and rubber vulcanizate on gelation, network structure, and techical properties has been studied over a wide range of temperatures and times of aging. Three grades of EPDM having different types of diene have been considered.
A. Saha Deuri, Anil K. Bhowmick
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AbstractThe effect of oxidative and thermal aging of EPDM raw rubber and rubber vulcanizate on gelation, network structure, and techical properties has been studied over a wide range of temperatures and times of aging. Three grades of EPDM having different types of diene have been considered.
A. Saha Deuri, Anil K. Bhowmick
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2000
EPDM is the designation agreed upon by ASTM and IISRP for ethylene-propylene rubber, where "E" and "P" stand for ethylene and propylene, respectively. "D" designates the nonconjugated diene that provides a site of unsaturation for sulfur vulcanization, and "M" refers to the polymethylene saturated backbone of the polymer, i.e., CHr(CH2 )n-CH2 (Fig. 1)
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EPDM is the designation agreed upon by ASTM and IISRP for ethylene-propylene rubber, where "E" and "P" stand for ethylene and propylene, respectively. "D" designates the nonconjugated diene that provides a site of unsaturation for sulfur vulcanization, and "M" refers to the polymethylene saturated backbone of the polymer, i.e., CHr(CH2 )n-CH2 (Fig. 1)
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Sulfomaleation of EPDM polymers
Macromolecules, 1987Introduction de groupes polaires fonctionnels a l'aide d'anhydride thiomaleique et de ses ...
Warren A. Thaler +2 more
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Rubber Chemistry and Technology, 2008
Abstract Sulfur-cured EPDM building-profile material was reclaimed in a co-rotating twin-screw extruder using hexadecylamine as reclaiming aid. This reclaim was blended with increasing amounts of a virgin EPDM roof-sheeting masterbatch and cured at temperatures allowing for a reversion-free vulcanization.
Dijkhuis, K.A.J. +3 more
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Abstract Sulfur-cured EPDM building-profile material was reclaimed in a co-rotating twin-screw extruder using hexadecylamine as reclaiming aid. This reclaim was blended with increasing amounts of a virgin EPDM roof-sheeting masterbatch and cured at temperatures allowing for a reversion-free vulcanization.
Dijkhuis, K.A.J. +3 more
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