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Elastomeric properties of bimodal networks prepared by simultaneous curing‐filling technique
Author(s) -
Tang M.Y.,
Mark J. E.
Publication year - 1985
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.760250105
Subject(s) - materials science , elastomer , curing (chemistry) , polymer network , toughness , composite material , polymer , network structure , polymer chemistry , polymer science , chemical engineering , computer science , machine learning , engineering
If the tetraethylorthosilicate (TEOS) used to end link hydroxyl‐terminated poly(dimethylsiloxane) chains is present in excess, there are two effects on the resulting network structure. First, some of the excess TEOS hydrolyzes to give in situ precipitation of reinforcing silica particles. In addition, some can cause extension of the polymer chains, particularly of the shorter chains in the case of a bimodal network. In the present investigation, the ultimate strength and toughness of such bimodal networks was found to go through a maximum with increase in the amount of excess TEOS used in the curingfilling procedure.