Abstract: In order to obtain UV curable acrylate modified chlorinated polypropylene (CPP), hydroxyethyl methacrylate( HEMA) was firstly grafted onto CPP via solution polymerization. The effects of the content of HEMA, reaction temperature, and the content of initiator on the graft ratio were investigated, which determined the optimum conditions of the graft reaction:m(CPP): m( HEMA)=8.5: 1.5, reaction temperature 100 ℃ and initiator dosage 3% based on total mass of CPP and HEMA, the graft ratio reached 6. 69%. The acrylate modified CPP obtained from the graft reaction was further UV modified by methacryloyl chloride.And the surface tension and adhesion of the acrylate modified CPP with different graft ratio were investigated before and after UV modified. The results showed that the surface tension reached 40. 0 mN/m or more, the adhesion of the cured film was good before and after UV modified. The surface tension of UV modified CPP kept good and the adhesion was improved after UV cured.

Key words: chlorinated polypropylene, UV curable, graft reaction, acrylate

摘要： 为得到光固化丙烯酸酯改性氯化聚丙烯(CPP)，首先采用溶液聚合方法，用甲基丙烯酸羟乙酯(HEMA)对 CPP 进行功能化接枝改性，研究了 HEMA 含量、反应温度、引发剂含量对接枝率的影响，确定合成丙烯酸酯改性 CPP 最佳工艺条件为 m(CPP) ∶m(HEMA)= 8.5 ∶1.5，反应温度 100 °C，引发剂占 CPP 及 HEMA 总质量的 3%，接枝率达到 6.69%。 利用甲基丙烯酰氯对在接枝基础上得到的丙烯酸酯改性 CPP 进行光固化改性，研究了不同接枝率的丙烯酸酯改性 CPP 光固化改性前后，以及光固化改性产物光固化前后对表面张力和附着力的影响。 结果表明:光固化改性前后，涂层表面张力均能达到 40.0 mN / m 以上，附着力良好;光固化改性产物光固化后表面性能仍然保持良好，附着力得到提高。

关键词: 氯化聚丙烯, 光固化, 接枝反应, 丙烯酸酯