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Preparation of aminopropyl polysiloxane‐based heat‐curable silicone rubber
Author(s) -
Wu Yongzhong,
Feng Shengyu,
Bei Yiling,
Liu Peng
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1340
Subject(s) - silicone rubber , materials science , ultimate tensile strength , tear resistance , composite material , swelling , epoxy , elongation , polymer chemistry , natural rubber , silicone
By using polysiloxane containing aminopropyl groups as a base gum and polysiloxane containing epoxy groups as a crosslinker, we prepared a new type of addition‐curable silicone rubber and investigated in detail the effect of various factors on the silicone rubber. Better technical conditions were determined and the vulcanizates with fine mechanical properties were obtained. The tensile strength, tear strength, elongation at break, and hardness of the vulcanizates reach 8.1 MPa, 19.4 kN/m, 420%, and 64 ShA, respectively. To analyze the crosslinking statue, we measured their crosslinking density by toluene‐swelling methods. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2341–2346, 2001