Epoxy resin modified by aliphatic cyclic carbonates

Epoxy resin modified by aliphatic cyclic carbonates
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脂肪族环状碳酸酯改性环氧树脂

DOI：
10.1002/app.1990.070410315
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
C. Wojciechowski
C. Wojciechowski
中科院分区：
--
文献类型：
--
作者：
G. Rokicki;C. Wojciechowski

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用脂肪族环氧化合物与二氧化碳反应得到的双齿和三齿环碳酸盐对环氧树脂进行改性。所制得的组合物具有粘度低、凝胶时间短、伴随交联的放热效应低等特点。在模型反应的基础上，发现环氧基和环状碳酸盐基团对三乙烯四胺交联的相互促进作用（协同效应）。与环氧树脂相比，固化的环氧环碳酸盐组合物具有更高的抗冲击性和抗拉强度
Bidentate and tridentate cyclic carbonates obtained from the reaction of aliphatic epoxy compounds with carbon dioxide were used for the modification of an epoxy resin. The compositions obtained exhibited low viscosity, short gel time, and low exothermic effect accompanying the cross-linking. On the basis of model reactions, a mutually accelerating effect of epoxy and cyclic carbonate groups on the crosslinking of the studied systems by triethylenetetramine was found (synergistic effect). The cured epoxide-cyclic carbonate compositions exhibited considerably higher impact resistance and tensile strength in comparison with epoxy resins