摘要：本课题主要研究含异氰脲酸酯环增塑剂的制备及其对聚氯乙烯（PVC）的增塑性能。以三羟乙基异氰脲酸酯（THEIC）和异辛酸、丙酸为原料，浓H2SO4为催化剂，二甲苯为共沸剂成功制备THEIC-三异辛酸酯。通过核磁共振(1H NMR)测试将制得的增塑剂结构进行了表征。结果表明，THEIC-三异辛酸酯和THEIC-三丙酸酯的实际结构与理论结构相符。将THEIC-三异辛酸酯与THEIC-三丙酸酯对聚氯乙烯（PVC）进行增塑改性对比，研究了增塑PVC的力学性能，塑化性能，流变性能。研究结果表明，THEIC-三丙酸酯较适合作为PVC的增塑剂，而THEIC-三异辛酸酯与PVC的相容性太差，不能有效增塑PVC。THEIC-三丙酸酯增塑的聚氯乙烯（PVC）在增塑剂含量为50%时，力学性能，塑化性能，流变性能最好。

关键词：三羟乙基异氰脲酸酯；增塑剂；聚氯乙烯；塑化性能；力学性能

Abstract：This paper mainly research the preparation of plasticizers containing isocyanurate ring and the property of plasticized polyvinyl chloride (PVC). Plasticizer was prepared using Tris(2-hydroxyl ethyl) isocyanurate (THEIC) 2-Ethylcapronic acid and propionie acid as raw materials, concentrated sulfuric acid as a catalyst and xylene as entrainer. The structure of the plasticizers was analysised by nuclear magnetic resonance (1H NMR). The results showed that the structure of tris(2-hydroxyl ethyl) isocyanurate tris-ethylhexanoate and tris(2-hydroxyl ethyl) isocyanurate tris- propionate is consistent with the theoretical structure. Tris(2-hydroxyl ethyl) isocyanurate tris-ethylhexanoate was compared with tris(2-hydroxyl ethyl) isocyanurate tris- propionate for plasticized modified PVC by mechanical properties, plasticizing properties, rheological properties. The results showed that tris(2-hydroxyl ethyl) isocyanurate  tris- propionate is more suitable as a plasticizer of PVC, and the compatibility of tris(2-hydroxyl ethyl) isocyanurate tris-ethylhexanoate is too bad for PVC,it can not be effectively plasticized PVC. When tris(2-hydroxyl ethyl) isocyanurate tris- propionate content is 50%, the mechanical properties, plasticizing properties and rheological properties were the best.

Key words: tris(2-hydroxyl ethyl) isocyanurate；plasticizer；polyvinyl chloride；plasticizing properties；mechanical properties；