| 热塑性聚醚酰亚胺改性四官能度环氧树脂的相分离研究——固化剂用量的影响 |
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| 引用本文： | 余英丰,崔峻,陈文杰,李善君.热塑性聚醚酰亚胺改性四官能度环氧树脂的相分离研究——固化剂用量的影响[J].高等学校化学学报,1998,19(5):808-812. |
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| 作者姓名： | 余英丰 崔峻 陈文杰 李善君 |
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| 作者单位： | 复旦大学高分子科学系,国家教育委员会聚合物分子工程开放实验室,上海,200433 |
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| 基金项目： | 国家自然科学基金，四川联合大学高分子材料工程国家重点实验室资助课题，59573021，，， |
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| 摘 要： | 以DSC、TRLS和SEM等方法研究了固化剂DDS用量对苯端基聚醚酰亚胺(P-PEI)改性4,4'-二氨基二苯甲烷四缩水甘油环氧树脂(TGDDM)体系的固化速率及相结构的影响.结果表明,20 phr P-PEI改性环氧体系在150℃固化时,随DDS量增加,固化反应速率增大,相分离时间提前,形成了不同的相结构,解释了DDS量对粘接剪切强度的影响.
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| 关 键 词： | 固化剂 相分离 环氧树脂 聚醚酰亚胺 胶粘剂 |
Studies on the Phase Separation of Poly(ether imide)Modified Tetrafunctional Epoxy Resin——The Effect of Curing Agent Ratio |
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| YU Ying-Feng,CUI Jun,CHEN Wen-Jie,LI Shan-Jun.Studies on the Phase Separation of Poly(ether imide)Modified Tetrafunctional Epoxy Resin——The Effect of Curing Agent Ratio[J].Chemical Research In Chinese Universities,1998,19(5):808-812. |
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| Authors: | YU Ying-Feng CUI Jun CHEN Wen-Jie LI Shan-Jun |
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| Abstract: | The effect of the amount of curing agent on phenyl terminated polyetherimide modified TGDDM systems has been studied by using DSC, time resolution light scattering(TRLS) and SEM. Increase of the amount of curing agent will enhance the rates of curing reaction and phase separation, thus change apparently the phase structure of TGDDM/P PEI(20 phr) blends and the shearing strength. An autocatalytic mechanism was observed for both neat epoxy and the epoxy/PEI blends, but the reaction rates for the blends were higher than that of the neat epoxy due to the presence of PEI. |
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| Keywords: | Morphology Curing agent Curing reaction Phase separation Shearing strength |
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