中国塑料 ›› 2020, Vol. 34 ›› Issue (9): 16-21.DOI: 10.19491/j.issn.1001-9278.2020.09.003

• 材料与性能 • 上一篇    下一篇

氯乙烯共聚弹性体对聚氯乙烯的改性及性能影响

杨康1, 曾化雨1, 钟安澜1, 苑会林2, 曾舒1, 麻玉龙1()   

  1. 1.贵州省冶金化工研究所,贵阳 550014
    2.北京化工大学材料科学与工程学院成型加工实验室,北京 100029
  • 收稿日期:2020-03-25 出版日期:2020-09-26 发布日期:2020-09-25
  • 基金资助:

    贵州省纳米复合助剂制备及应用科技创新人才团队(黔科合平台人才[2017]5659号);复合亲水性树脂共混改性制备超长效聚乙烯防雾滴棚膜的研究(黔科院J字[2019]24号);单分散有机化球形二氧化硅调控聚乙烯棚膜的散射光透过研究(黔科合基础[2019]1448号);单分散复合纳米无机颜料调控聚乙烯棚膜的红/蓝光透过研究(黔科合基础[2018]1417号)

Effect of Vinyl Chloride Copolymer Elastomer on Modification and Properties of PVC

YANG Kang1, ZENG Huayu1, ZHONG Anlan1, YUAN Huilin2, ZENG Shu1, MA Yulong1()   

  1. 1.Guizhou Institute of Metallurgy and Chemical Industry, Guiyang 550014, China
    2.Molding & Processing Laboratory, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2020-03-25 Online:2020-09-26 Published:2020-09-25
  • Contact: MA Yulong E-mail:884478110@qq.com

摘要:

以氯乙烯-丙烯酸丁酯-甲基丙烯酸甲酯共聚弹性体(VCE)增韧改性PVC树脂提高聚氯乙烯(PVC)的抗冲击性能,并与传统抗冲击改性剂甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物(MBS)、ACR及氯化聚乙烯(CPE)改性的PVC材料比较。对改性PVC的流变性能、力学性能、热变形性能及断面结构进行表征和微观观察。结果表明,随着VCE含量的增加,PVC的拉伸强度与弯曲强度逐渐减小,抗冲击强度与断裂伸长率逐渐增加,热变形温度逐渐降低;在相同用量的条件下,VCE对 PVC的改性效果优于ACR及CPE,达到MBS改性PVC的水平,VCE能够增韧PVC,提高PVC的抗冲击性能,是一种性能优异的新型PVC抗冲击改性剂。

关键词: 聚氯乙烯, 氯乙烯共聚弹性体, 冲击改性剂, 流变性能

Abstract:

A vinly chloride-butyl acrylate-methly methacrylate copolymer elastomer (VCE) was used to modify PVC resin for improvement of impact resistance, and a comparative investigation was also carried out for the modification effect on PVC with MBS, ACR and CPE. The rheological, mechanical and thermal deformation properties of the modified PVC resins were investigated, and their cross-sectional morphologies were observed. In the view of the comparative results, the modified PVC resins presented a decrease in tensile strength and bending strength but an increase in impact strength and elongation at break increased. Moreover, their thermal deformation temperature decreased with an increase of VCE content. VCE was found to have better modification effect than ACR and CPE but a similar effect with MBS. VCE shows a significant toughening effect on PVC, and therefore it can be taken as a promising impact modifier for PVC.

Key words: polyvinyl chloride, vinyl chloride copolymer elastomer, impact modifier, rheological property

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