中国塑料

中国塑料 ›› 2013, Vol. 27 ›› Issue (10): 78-82 .DOI: 10.19491/j.issn.1001-9278.2013.10.017

• 助剂 • 上一篇    下一篇

环保增塑剂环己烷1,2二甲酸二异辛酯的合成与应用

欧远辉 丁雪佳 张龙 韩正达   

  1. 北京化工大学材料科学与工程学院
  • 收稿日期:2013-04-24 修回日期:2013-05-22 出版日期:2013-10-26 发布日期:2013-10-26

Synthesis and Application of Environmentally Friendly Plasticizers Di(2ethylhexyl)1,2cyclohexane Dicarboxylate

Xuejia DING   

  • Received:2013-04-24 Revised:2013-05-22 Online:2013-10-26 Published:2013-10-26
  • Contact: Xuejia DING

摘要： 以环己烷1,2二甲酸酐(HHPA)与异辛醇为原料，甲烷磺酸为催化剂，合成了环保增塑剂环己烷1,2二甲酸二异辛酯（DEHCH），并与邻苯二甲酸二异辛酯（DEHP）的增塑性能进行了对比。经单因素实验得到最佳的合成工艺条件为：醇酐摩尔比为2.6∶1.0，催化剂用量为酸酐质量的0.25 %，反应温度为170 ℃，反应时间2 h，酯化率可达到97.89 %。并用红外光谱、核磁共振、质谱表征了产物的分子结构，通过力学性能的对比可知，合成的DEHCH与DEHP有着相似的增塑性能，可以作为一种替代邻苯二甲酸酯类的增塑剂。

关键词: 环己烷1, 2二甲酸二异辛酯, 甲烷磺酸, 酯化, 增塑剂

Abstract: In this article di(2ethylhexyl)1,2cyclohexane dicarboxylate (DEHCH) was synthesized by the reaction of hexahydrophthalic anhydride (HHPA) with isooctanol using methanesulfonic acid as a catalyst. The optimal reaction scheme was as follows: n(isooctanol)∶n(HHPA) was 2.6∶1.0, catalyst amount was 0.25 % of the mass of HHPA, reaction temperature was 170 ℃, and reaction time was 2 h. The esterification yield was 97.89 %. In addition, the molecular structure of DEHCH was characterized by IR, 1HNMR, and MS. And the mechanical properties of PVC plasticized by DEHCH were similar to those of PVC plasticized by DEHP. The synthesized DEHCH could be used as an alternative for phthalates.

Key words: di(2ethylhexyl)1, 2cyclohexane dicarboxylate, methanesulfonic acid, esterification, plasticizer

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