Internal stresses in cured polyester binders for polymer composites

Petrova A.P., Mukhametov R.R., Akhmadieva K.R.
UDC
678.8
DOI
10.18577/2307-6046-2019-0-5-12-21
Article PDF (Russian) (726.79 KB)
How to cite
Petrova A.P., Mukhametov R.R., Akhmadieva K.R. Internal stresses in cured polyester binders for polymer composites // Proceedings of VIAM. 2019. No. 5. DOI: 10.18577/2307-6046-2019-0-5-12-21. URL: https://test.viam.ru/en/journal/2019/5/2
Keywords
internal stresses, breaking strength, cantilever method, curing, humidity, heat treatment, linear dimensions.
Abstract

Internal thermal stresses appearing during the curing of a polyester maleate binder and fiberglass on its base are considered. The effect of moisture (air humidity) on the breaking strength of samples and internal stresses appearing in the process of their production, storage (using) and heat treatment has been studied. It is shown that the internal stresses mainly depend on the difference in the moisture content of the samples compared to their initial state, while the breaking strength of the samples decreases with increasing moisture content.

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