含碳链的光引发剂和交联剂在聚乙烯中的应用

doi:10.19491/j.issn.1001-9278.2017.09.018

中国塑料 ›› 2017, Vol. 31 ›› Issue (9): 114-119.DOI: 10.19491/j.issn.1001-9278.2017.09.018

含碳链的光引发剂和交联剂在聚乙烯中的应用

吴强华¹,孙梅²

1. 中国科学技术大学高分子科学与工程系
2. 中国科学技术大学合肥微尺度物质科学国家实验室

收稿日期:2017-03-27 修回日期:2017-05-12 出版日期:2017-09-26 发布日期:2017-10-25

Application of Photoinitiator and Multifunctional Monomers Containing Carbon Chains in PE-LLD

Received:2017-03-27 Revised:2017-05-12 Online:2017-09-26 Published:2017-10-25

摘要/Abstract

摘要： 研究了含碳链的光引发剂二苯甲酮（BP）衍生物（BPL）和多官能团单体三烯丙基异三聚氰酸酯（TAIC）衍生物（STAIC）对聚乙烯的光引发交联作用及其在线形低密度聚乙烯(PE-LLD)中的热迁移损失情况，并与BP和TAIC进行了对比。结果表明，BPL和STAIC可组成高效的光引发交联体系，其最佳添加量分别是2.1份（质量份，下同）和2.0份；BPL和STAIC在PE-LLD中的热迁移损失程度远小于BP和TAIC；热迁移处理后，BPL的引发能力降低了3.6 %，而BP的引发能力则降低了72.5 %;STAIC的强化交联能力下降了46 %，而TAIC则失去了强化交联能力。

Abstract: A carbon-chain-containing photoinitiator (BPL) derived from benzophenone (BP) and a carbon-chain-containing multifunctional monomer (STAIC) derived from triallyl isocyanurate (TAIC) were used for photocrosslinking of linear lowdensity polyethylene (PE-LLD).Photoinitiation efficiency and thermal migration properties of BPL and STAIC in PE-LLD were investigated comparatively with BP and TAIC.The results indicated that combination of BPL and STAIC could initiate the photo-crosslinking of PE-LLD with high efficiency, and the optimum amounts of BPL and STAIC used for PE-LLD were 2.1 and 2.0 phr, respectively.Thermal migration test revealed that BPL and STAIC exhibited a much lower thermal migration rate in PELLD than BP and STAIC, respectively.After thermal migration, the photoinitiation efficiency of BPL and BP decreased by 3.6 % and 72.5 %, respectively.Furthermore, the enhanced crosslinking efficiency for STAIC in PE-LLD decreased by 46 %, whereas TAIC showed little influence on the photocrosslinking of PE-LLD.

吴强华孙梅. 含碳链的光引发剂和交联剂在聚乙烯中的应用[J]. 中国塑料, 2017, 31(9): 114-119.

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含碳链的光引发剂和交联剂在聚乙烯中的应用

Application of Photoinitiator and Multifunctional Monomers Containing Carbon Chains in PE-LLD

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