均相催化六氢苯酐与C10直链醇制备环保增塑剂及其性能

doi:10.19491/j.issn.1001-9278.2016.02.018

中国塑料 ›› 2016, Vol. 30 ›› Issue (02): 88-94 .DOI: 10.19491/j.issn.1001-9278.2016.02.018

均相催化六氢苯酐与C₁₀直链醇制备环保增塑剂及其性能

李志莹¹,蒋平平²,黄元旦³,刘左悦²,李晓婷¹

1. 江南大学化工学院2. 江南大学化学与材料工程学院3. 江南大学化学与材料工程

收稿日期:2015-10-08 修回日期:2015-12-27 出版日期:2016-02-26 发布日期:2016-02-26

Preparation of a Kind of Environmentally-friendly Plasticizer by Hexahydrophthalic Anhydride and C₁₀ Straight Chain Alcohols through Homogeneous Catalysis and Its Properties

Received:2015-10-08 Revised:2015-12-27 Online:2016-02-26 Published:2016-02-26

摘要/Abstract

摘要： 采用均相催化剂钛酸四丁酯，以六氢苯酐和C10直链醇癸醇为原料，进行酯化得到高纯度的环保增塑剂环己烷1,2二甲酸二癸酯(DIDCH)。考察了醇酸摩尔比、催化剂种类及用量、反应时间、反应温度对酯化率的影响，确定了最佳工艺条件为：醇酸摩尔比为2.8∶1，反应时间为3 h，反应温度为200 ℃，催化剂用量为六氢苯酐质量的1.5 %。产品为无色透明油状液体，酯化率可达到99.48 %。采用傅里叶变换红外光谱(FTIR)及气相质谱联用仪(GC-MS)对DIDCH结构及纯度进行表征，将DIDCH作为增塑剂应用在聚氯乙烯( PVC)中。结果表明，使用DIDCH增塑的PVC试样，热老化试验试样变黄时间为60 min，玻璃化转变温度(Tg)为-8.91 ℃，具有优异的增塑性能及热稳定性能。

关键词: 环己烷1, 2-二甲酸二癸酯, 钛酸四丁酯, 环保增塑剂, 酯化反应

Abstract: An environmentallyfriendly plasticizer dioctyl1,2cyclohexane dicarboxylate (DIDCH) was prepared with tetrabutyltitanate as a homogeneous catalyst.The effect of the molar ratio of decanoltoHHPA, amount of catalyst, reaction time and temperature on the esterification rate was studied and the optimum conditions was found as: the molar ratio decanol to HHPA of 2.8∶1, reaction time was 3 h, the reaction temperature was 200 ℃,dosage of catalyst was 1.5 % of the mass of hexahydrophthalic anhydride. The product was a colorless transparent oily liquid, the esterification rate could reach 99.48 %. Fourier transform infrared spectroscopy (FTIR) and GC-MS were used to determine the structure of DIDCH. When poly(vinyl chloride) (PVC) was plasticized with DIDCH, the yellowing time was 60 min, the glass transition temperature (Tg) was -8.91 ℃.

Key words: dioctl-1, 2-cyclohexane dicarboxylate, tetrabutyl titanate, esterification, environment-friendly plasticizer

李志莹, 蒋平平, 黄元旦, 刘左悦, 李晓婷. 均相催化六氢苯酐与C₁₀直链醇制备环保增塑剂及其性能[J]. 中国塑料, 2016, 30(02): 88-94 .

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均相催化六氢苯酐与C₁₀直链醇制备环保增塑剂及其性能

Preparation of a Kind of Environmentally-friendly Plasticizer by Hexahydrophthalic Anhydride and C₁₀ Straight Chain Alcohols through Homogeneous Catalysis and Its Properties

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