Vinyl‐terminated oligomeric ethers: A study of the crosslinking process
作者:
S. J. Barton,
J. S. Ghotra,
A. E. Matthews,
G. Pritchard,
期刊:
Journal of Applied Polymer Science
(WILEY Available online 1991)
卷期:
Volume 42,
issue 1
页码: 35-43
ISSN:0021-8995
年代: 1991
DOI:10.1002/app.1991.070420105
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractA thermosetting resin consisting of a mixture of vinyl‐terminated oligomeric ethers was prepared by a two‐step synthesis. This required the reaction of 1,4‐bis (chloromethyl) benzene with the potassium salt of bisphenol A, and subsequent vinylation of the chloromethyl end groups by means of a Wittig reaction. The linear vinyl prepolymers were thermally crosslinked through their reactive styryl end groups (without the addition of catalyst) to produce castings and woven glass laminates. A study of the crosslinking process was carried out by differential scanning calorimetry (DSC). The water absorption and the thermooxidative stability of the crosslinked polymer were investigated. A styrene solution of the oligomeric ethers was also crosslinked, using benzoyl peroxide as a catalyst. The moisture absorption characteristics of the crosslinked styrene copolymer were compared with those of the crosslinked homopolymer. Both substances showed hydrophobic char
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