Correlation between stress-whitening and fracture toughness in rubber-modified epoxies

Correlation between stress-whitening and fracture toughness in rubber-modified epoxies
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橡胶改性环氧树脂的应力致白与断裂韧性之间的相关性

DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
P. Ma
P. Ma
中科院分区：
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文献类型：
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作者：
H. Kim;P. Ma

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Fracture toughness of rubber modified epoxy systems was evaluated in relation to stresswhitening. The epoxy systems consisted of diglycidyl ethers of bisphenol A (DGEBA)-based epoxy resin, 4,4′ diaminodiphenyl sulphone (DDS) as curing agent, and carboxylterminated butadiene-acrylonitrile (CTBN) rubber. It was found that a peak value of fracture toughness occurs at a small amount of rubber content (∼ 4 phr) and closely corresponds to that of stress-whitening size. Other properties such as flexural strength and flexural modulus were also found to display maxima at a similar amount of rubber content. © 1996 John Wiley & Sons, Inc.