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Cure retardation of peroxide‐cured silica filled natural rubber influenced by organosilane
Author(s) -
Pattanawanidchai Sirichai,
SaeOui Pongdhorn,
Sirisinha Chakrit,
Siriwong Chomsri
Publication year - 2019
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24864
Subject(s) - materials science , curing (chemistry) , elongation , natural rubber , tear resistance , composite material , ultimate tensile strength , peroxide , filler (materials) , modulus , silane , chemistry , organic chemistry
The influence of silane coupling agent on properties of silica‐filled compounds under peroxide curing was investigated. bis (triethoxysilylpropyl) tetrasulfide (TESPT) was selected in this study and its content was varied from 0 to 12% w/w of silica. It is found that with increasing TESPT content, bound rubber content, tensile strength, elongation at break and tear strength are enhanced. By contrast, magnitude of Payne's effect, modulus at 100% elongation (M 100 ) and heat build‐up are decreased. The changes of such properties are attributed to the reduction of crosslink density in conjunction with the improvements of both rubber–filler interaction and degree of filler dispersion with increasing TESPT content in the peroxide curing system. POLYM. ENG. SCI., 59:42–48, 2019. © 2018 Society of Plastics Engineers