Mechanisms of Inhomogeneous Polymer Weathering


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Resumo

The strength, impact toughness, and fractography of degradation of epoxy polymer and poly(methyl methacrylate) were studied during aging under conditions of moderate warm and warm humid climates. Heterogeneity of aging of the materials in thickness of specimens was detected. A common regularity of aging of amorphous and partially crystalline polymers is the formation of a degraded surface layer 100–200 μm thick. Principles of linear fracture mechanics were used to take into account the effect of this layer on the change in mechanical properties of polymers.

Sobre autores

O. Startsev

All-Russian Research Institute of Aviation Materials,
State Scientific Center of the Russian Federation

Autor responsável pela correspondência
Email: startsev@gmail.com
Rússia, Moscow, 105005

M. Lebedev

Larionov Institute of Physicotechnical Problems of the North, Siberian Branch, Russian Academy of Sciences

Email: startsev@gmail.com
Rússia, Yakutsk, 677891

A. Slavin

All-Russian Research Institute of Aviation Materials,
State Scientific Center of the Russian Federation

Email: startsev@gmail.com
Rússia, Moscow, 105005

I. Noev

Ammosov North-Eastern Federal University

Email: startsev@gmail.com
Rússia, Yakutsk, 677000

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