中国塑料

中国塑料 ›› 2012, Vol. 26 ›› Issue (01): 93-97 .DOI: 10.19491/j.issn.1001-9278.2012.01.017

• 塑料与环境 • 上一篇    下一篇

PE-LD/PVDC/PE-LD复合薄膜回收料制备共混材料的研究

沈永鑫 张华集 张雯 陈晓 杨莉莉   

  1. 福建师范大学 化学与材料学院 福建师范大学 化学与材料学院
  • 收稿日期:2011-09-16 修回日期:1900-01-01 出版日期:2012-01-26 发布日期:2012-01-26

Study on Blends Prepared by Waste PE-LD/PVDC/PE-LD Composite Film

yongxin shen wen zhang xiao chen lili yang   

  • Received:2011-09-16 Revised:1900-01-01 Online:2012-01-26 Published:2012-01-26

摘要： 以废旧低密度聚乙烯/聚偏氯乙烯/低密度聚乙烯（PE-LD/PVDC/PE-LD）复合薄膜为基体材料，液体钙-锌(Ca-Zn)为热稳定剂，氯化聚乙烯(CPE)为相容剂，制备了PE-LD/PVDC/CPE共混材料，并对其热稳定性能、力学性能、阻透性能和微观形态结构进行了测试与分析。结果表明，加入1.2份液体Ca-Zn稳定剂，刚果红试纸起始变色温度和完全变色温度分别提高了8 ℃和11 ℃，刚果红试纸起始变色时间和完全变色时间分别延长了67 s和354 s，共混材料的热稳定性能大幅度提高；含4.5 %CPE的共混材料中，PVDC嵌入PE-LD中，相容性好，与未添加CPE的材料相比，其断裂伸长率提高了76.70 %，缺口冲击强度提高了30.01 %，吸油率下降了33.61 %，柔韧性和阻透性能明显提高。

关键词: 低密度聚乙烯, 聚偏氯乙烯, 复合薄膜, 回收料, 钙-锌热稳定剂, 氯化聚乙烯

Abstract: Waste PE-LD/PVDC/PE-LD composite film was recycled with addition of Ca-Zn stabilizer and chlorinated polyethylene (CPE) as a compatibilizer. The thermal stability, mechanical properties, barrier properties, and fracture surface micro-morphology of the blends were studied. It showed that with the addition of 1.2 phr Ca-Zn, the initial and complete Congo red color deterioration temperature of the blends increased by 8 ℃and 11 ℃, and the initial and complete Congo red color deterioration time extended by 67 s and 354 s, respectively. With the addition of 4.5 % CPE, the compatibility between PE-LD and PVDC improved because PVDC was embedded into PE-LD. The elongation at break of the blend increased by 76.70 %, the notched impact strength increased by 30.01 %, the oil absorption rate decreased by 33.61 % , compared with the blends without CPE. The flexibility and barrier properties of the blends increased markedly.

Key words: low-density polyethylene, poly(vinylidene chloride), composite film, recycled material, calcium-zinc thermal stabilizer, chlorinated polyethylene

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