中国塑料 ›› 2017, Vol. 31 ›› Issue (11): 78-83.DOI: 10.19491/j.issn.1001-9278.2017.11.012

• 加工与应用 • 上一篇    下一篇

马来酸丁酯接枝聚氯乙烯的工艺与性能

张文龙,高丽平,戴亚杰   

  1. 哈尔滨理工大学
  • 收稿日期:2017-06-23 修回日期:2017-07-12 出版日期:2017-11-26 发布日期:2017-11-26

Preparation and Properties of Poly(vinyl chloride) Grafted with Dibutyl Maleate

  • Received:2017-06-23 Revised:2017-07-12 Online:2017-11-26 Published:2017-11-26

摘要: 以马来酸酐接枝聚氯乙烯(PVC-g-MAH)为原料,采用正丁醇(NBA)对其进行酯化反应,制备了内增塑剂马来酸丁酯接枝聚氯乙烯(PVC-g-DBM),并通过熔融共混法制备了PVC/PVC-g-DBM复合材料;探究了酯化反应的工艺条件,并对PVC/PVC-g-DBM复合材料的性能进行了对比分析。结果表明,DBM对PVC起内增塑作用,当醇(NBA)酸(MAH)摩尔比为2.15,催化剂、脱水剂的加入量分别为MAH的3 %(质量分数,下同),反应时间为4 h时,产物酯化率可达91.07 %;与未添加PVC-g-DBM的PVC复合材料相比,PVC/PVC-g-DBM复合材料热稳定性、耐低温性能、耐迁移性能明显提高,同时加工性能和力学性能也有所改善。

Abstract: Poly(vinyl chloride) grafted with dibutyl maleate (PVC-g-DBM) was synthesized by using maleic anhydride grafted PVC (PVC-g-MAH) as a raw material and n-butanol as an esterification catalyst, and then PVC/PVC-g-DBM compounds were prepared by melt blending. Esterification conditions of PVC-g-MAH and properties of the compounds were investigated. The results indicated that dibutyl maleate had a plasticization effect on PVC. When the mole ratio of alkyd was set to 2.15, the weight fractions of catalyst and dehydrating agent were set to 3 wt %, and the reaction time was set to 4 h, the esterification rate of PVC-g-MAH could reach 91.07 %. Compared with pristine PVC, PVC/PVC-g-DBM compounds achieved an improvement in thermal stability, low temperature resistance, migration resistance, processing performance and mechanical properties.