| 不饱和聚酯树脂的脆韧转变现象 |
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| 引用本文： | 赵世琦 吕水周. 不饱和聚酯树脂的脆韧转变现象[J]. 热固性树脂, 1995, 10(4): 11-14 |
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| 作者姓名： | 赵世琦 吕水周 |
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| 作者单位： | 清华大学高分子研究所 |
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| 摘 要： | 用两种形状和粒径均不同的刚性粒子和一种微凝胶为增韧剂,研究了它们对不饱和聚酯树脂(UPR)的增韧作用,首次发现UPR的脆韧转变现象。对于脆性较大的UPR,只有在采用加载速度较慢的断裂韧性来表征其韧性时,方能观察到这一脆韧转变现象。
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| 关 键 词： | 不饱和聚酯树脂(UPR) 增韧脆韧转变 |
BRITTLE- TOUGH TRANSITION IN UNSATURATED POLYESTER RESIN |
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| Abstract: | The toughening effect of two kinds of rigid particles with different shapes and sizes and a microgel on unsaturated polyester resin (UPR) was investigated, and it was the first time to have observed the brittle-tough transition in UPR. For the UPR with greater brittleness, the brittle-tough transition was observed only when the toughness of the resin was characterized by fracture toughness at a slower loading rate. |
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