中国塑料

中国塑料 ›› 2011, Vol. 25 ›› Issue (10): 64-68 .DOI: 10.19491/j.issn.1001-9278.2011.10.013

• 加工与应用 • 上一篇    下一篇

抗氧剂和光稳定剂对PE-LLD紫外光老化的稳定作用

杨浩邈 胡斌 吴鹏   

  1. 重庆大学材料科学与工程学院 中国石油独山子石化分公司研究院橡塑所 新疆大学
  • 收稿日期:2011-07-22 修回日期:1900-01-01 出版日期:2011-10-26 发布日期:2011-10-26

Stabilization Effect of Antioxidants and Light Stabilizers on UV-light Aging of PE-LLD

YANG Haomiao HU Bin WU Peng   

  • Received:2011-07-22 Revised:1900-01-01 Online:2011-10-26 Published:2011-10-26
  • Contact: WU Peng

摘要： 研究了抗氧剂1010、168与光稳定剂622对线形低密度聚乙烯（PE-LLD）抗紫外光老化性能的影响，并通过拉伸性能测试和凝胶渗透色谱等手段对PE-LLD老化前后的拉伸性能、相对分子质量及其分布进行了研究。结果表明，纯PE-LLD经紫外光老化3 d后，其断裂伸长率保留率就降低到50 %以下；单独添加0.15份抗氧剂1010、168或光稳定剂622，PE-LLD的断裂伸长率保留率分别在紫外光老化7、6和15 d后降低到50 %以下；抗氧剂1010、168与光稳定剂622复配使用时，可显著提高PE-LLD的抗紫外光老化性能，具有明显的协同效应。

关键词: 线性低密度聚乙烯, 紫外光老化, 抗氧剂, 光稳定剂, 协同效应

Abstract: The UV stabilizing effects of antioxidant 1010, 168 and light stabilizer 622 on linear low density polyethylene (PE-LLD) were studied. Mechanical testing and gel permeation chromatography were carried out to study tensile properties and molecular weight of PE-LLD before and after UV-light aging. When antioxidant and light stabilizer were absent, the reserved elongation at break of PE-LLD was less than 50 % after UV-light aging for 3 d. With adding 0.15 phr of antioxidant 1010, 168 and light stabilizer 622 separately, the time of UV-light aging needed to decrease the elongation at break below 50 % were extended to 7, 6 and 15 d, respectively. When antioxidant 1010, 168 and light stabilizer 622 were used together, an obvious synergistic effect on the UV-light resistance of PE-LLD was observed.

Key words: linear low density polyethylene, UV-light aging, antioxidant, light stabilizer, synergistic effect

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