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Environment‐friendly silicone sealants by self‐catalytic cross‐linking reaction of α‐aminomethyl triethoxysilanes
Author(s) -
Yin Yigao,
Zhang Yi,
Chen Xiaoyan,
Liu Siwei,
Jiang Xing,
Chi Zhenguo,
Xu Jiarui
Publication year - 2011
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.21917
Subject(s) - triethoxysilane , materials science , ultimate tensile strength , silicone , catalysis , composite material , adhesive , dyeing , organic chemistry , chemistry , layer (electronics)
Abstract On the basis of the self‐catalytic characteristic of α‐aminomethyl triethoxysilanes, (diethyl) aminomethyl triethoxysilane, cyclohexylaminomethyl triethoxysilane, and anilinomethyl triethoxysilane were used as self‐catalytic cross‐linkers to prepare a series of environmental friendly, nano‐CaCO 3 reinforced silicone sealants based on poly(dimethylsiloxane) (PDMS). The tensile properties, hardness, adhesive properties, hot‐air aging resistance, and oil‐resistance properties of these materials were studied by universal electronic tensile machine, scanning electron microscope, and atomic force microscopy, etc. Results show that the comprehensive properties of the self‐catalytic cross‐linking PDMS sealants are much better than that of the traditional ones. The chemical structure and reactivity of the α‐aminomethyl triethoxysilanes have a great effect on the properties of PDMS sealants. The tensile strength of the reinforced sealants with 100 phr (100 parts per hundreds of PDMS) nano‐CaCO 3 is about 4.4 times than that of the unreinforced ones, and the elongation at break is about three times. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers