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Six-membered cyclic carbonates - epoxy resins modifiers

机译:六元环碳酸酯 - 环氧树脂改性剂

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摘要

A method of epoxy resin modification by biscyclic six-membered carbonates was presented. It was demonstrated that the reaction of oxiranes with six-membered cyclic carbonates catalyzed by Lewis acids takes place mainly with formation of five-six-membered spiroorthocarbonate. As a result, polyethercarbonates, polyethers and five-membered cyclic carbonates are formed. At low temperatures the reaction may stop at spiroorthocarbonate stage. We demonstrated that epoxy resin modified with 10 wt % of urethane oligomer terminated with six-membered carbonates or biscyclic carbonate containing triethylene glycol moiety exhibited 66-83 % higher impact strength than unmodified epoxy resin, while other mechanical parameters were left intact.
机译:提出了通过Biscyclic六元碳酸酯的环氧树脂改性方法。 结果证明,草酸酸催化的六元环碳酸酯的反应主要是形成五六元螺烃酸酯的形成。 结果,形成聚醚碳酸盐,聚醚和五元环碳酸盐。 在低温下,反应可能在螺碳酸氢盐阶段停止。 我们证明,用10wt%的氨基甲酸酯低聚物改性的环氧树脂终止于六元碳酸酯或含有三甘醇部分的烟胺碳酸酯,其冲击强度高于未改性的环氧树脂,而其他机械参数完整。

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