Brittle-tough transition in PP/EPDM blends: effects of interparticle distance and temperature
Brittle-tough transition in PP/EPDM blends: effects of interparticle distance and temperature
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DOI：
10.1016/s0032-3861(97)10083-0
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发表时间：
1998-06
期刊：
影响因子：
4.6
通讯作者：
Wei Jiang;Chang-hai Liu;Zhigang Wang;L. An;Haojun Liang;B. Jiang;Xue-hui Wang;Hui-xuan Zhang
中科院分区：
文献类型：
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作者：
Wei Jiang;Chang-hai Liu;Zhigang Wang;L. An;Haojun Liang;B. Jiang;Xue-hui Wang;Hui-xuan Zhang
PP/EPDM共混物的韧性在宽的温度范围（25-132°C）和组成（0-26重量% EPDM）内测量。结果表明，提高温度和减小颗粒间距对EPDM增韧PP的脆韧转变有同等的影响，且转变因子随温度的升高而增大。还发现温度和临界颗粒间距离之间的相关性。当临界颗粒间距离与Tg −T（Tgis定义为基体本身的脆韧转变温度）作图时，不同共混体系的曲线收敛于一条主曲线。
The toughness of PP/EPDM blends was measured over a wide range of temperature (25–132°C) and composition 0–26 wt% EPDM). It was found that increasing temperature and decreasing interparticle distance have equivalent effects on the brittle-tough transition of toughening PP with EPDM, and the shift factor increases with increasing temperature. A correlation was also found between temperature and critical interparticle distance. When critical interparticle distance was plotted versusTg−T, where Tgis defined as the brittle-tough transition temperature of the matrix itself, the curves for different blends systems converge to a single master curve.