Calculation of stresses in crosslinking polymers

被引：89

作者：

Adolf, D ^{[1
]}

Martin, JE ^{[1
]}

机构：

[1] SANDIA NATL LABS,ADV MAT PHYS & DEVICES DEPT,ALBUQUERQUE,NM 87185

来源：

JOURNAL OF COMPOSITE MATERIALS | 1996年 / 30卷 / 01期

关键词：

curing; polymers; processing; process modelling; residual stresses;

D O I：

10.1177/002199839603000102

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

A general constitutive model is presented for calculating the evolution of stresses in crosslinking polymers. The analysis is valid for thermo- and chemo-rheologically simple polymers and for time-dependent strain histories where the total strain at any time is not large, such that linear viscoelasticity applies. We identify the material parameters required and outline experimental and theoretical methods for their determination. This formalism is then used to calculate the development of cure stresses for an epoxy wherein the glass transition temperature exceeds the cure temperature during the reaction. Finally, we discuss practical methods of stress minimization through control of the cure cycle.

引用

页码：13 / 34

页数：22

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