Analysis of plasticizing properties of low molecular weight polytetrahydrofuran dibenzoate

doi:10.16085/j.issn.1000-6613.2020-2527

Abstract

Abstract:

Compared with traditional dioctyl phthalate (DOP) and polyether diethylene glycol dibenzoate (DEDB) plasticizers, the polyvinyl chloride (PVC) materials plasticized by polytetrahydrofuran dibenzoate (PTMGDB₅₀₀) plasticizer were investigated including FTIR, TG, mechanical properties, ethanol extraction resistance and migration resistance. In terms of mechanical properties, PVC material plasticized by PTMGDB₅₀₀ was between those plasticized by DOP and DEDB. Due to the stronger interaction between PTMGDB₅₀₀ and PVC, the properties of PTMGDB₅₀₀ plasticized PVC were better than those of DOP and DEDB in terms of resistance to migration, ethanol extraction, heat resistance and pressure resistance. Therefore, PTMGDB₅₀₀ can be used as a partial replacement of DOP and DEDB plasticizers.

Key words: plasticizer, polytetrahydrofuran dibenzoate, low-molecular-weight polytetrahydrofuran (PTMEG), polyvinyl chloride (PVC)

摘要：

以传统的邻苯二甲酸二辛酯（DOP）和聚醚型二甘醇二苯甲酸酯（DEDB）增塑剂作对比，对聚四氢呋喃二苯甲酸酯（PTMGDB₅₀₀）增塑剂增塑的聚氯乙烯（PVC）材料进行研究。本文对增塑剂增塑的PVC材料进行了FTIR和TG表征，并考察了其力学性能、耐乙醇抽出性及耐迁移性。结果表明，增塑剂PTMGDB₅₀₀增塑的PVC材料在力学性能上介于DOP和DEDB两者之间，而PTMGDB₅₀₀与PVC间的相互作用更强，在耐迁移、耐乙醇抽出、耐热及耐压等性能方面均优于DOP及DEDB，因此PTMGDB₅₀₀可作为部分替代DOP和DEDB的增塑剂。

关键词: 增塑剂, 聚四氢呋喃二苯甲酸酯, 低分子量聚四氢呋喃, 聚氯乙烯

CLC Number:

TQ314.24

QIAN Junfeng, WU Zhong, SUN Zhonghua, ZHANG Yangyang, HE Mingyang, CHEN Qun. Analysis of plasticizing properties of low molecular weight polytetrahydrofuran dibenzoate[J]. Chemical Industry and Engineering Progress, 2021, 40(12): 6839-6845.

钱俊峰, 吴中, 孙中华, 张洋洋, 何明阳, 陈群. 低分子量聚四氢呋喃二苯甲酸酯的增塑性能分析[J]. 化工进展, 2021, 40(12): 6839-6845.

Figures/Tables 9

References 10

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增塑剂	T₅/℃	T₁₀/℃	T₅₀/℃	T_p1/℃
DOP	212.4	241.3	276.0	288.2
DEDB	221.8	233.6	274.3	282.4
PTMGDB₅₀₀	237.7	242.3	271.3	280.5

增塑剂	T₅/℃	T₁₀/℃	T₅₀/℃	T_p1/℃
DOP	212.4	241.3	276.0	288.2
DEDB	221.8	233.6	274.3	282.4
PTMGDB₅₀₀	237.7	242.3	271.3	280.5

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