光稳定剂对PP基木塑复合材料老化性能的影响  

Effect of Light Stabilizer on Aging Properties of PP Based Wood Plastic Composites

作　　者：文霞[1] 田大慧[1] 汤瑛召 Wen Xia;Tian Dahui;Tang Yingzhao(Material Engineering College of Wuhu Institute of Technology,Wuhu 241000,China)

机构地区：[1]芜湖职业技术学院材料工程学院,芜湖安徽241000

出　　处：《广东化工》2021年第23期13-15,共3页Guangdong Chemical Industry

基　　金：安徽高校自然科学研究重点项目(KJ2017A554)。

摘　　要：本文利用紫外光加速老化试验,考察不同类型光稳定剂对PP基木塑复合材料的弯曲破坏载荷保留率、蠕变恢复率、冲击强度、24 h吸水率、色差等性能指标的影响。结果表明,1000h紫外光加速老化之后,表现最优的苯并三唑类光稳定剂复合材料的弯曲破坏载荷保留率为92.56%、蠕变恢复率为83.46%、冲击强度保持率为81.78%;24 h吸水率为2.69%,老化后的色差为22.69;受阻胺类光稳定剂次之,二苯甲酮类光稳定剂最差。The effects of different types of light stabilizers on the flexural failure load retention, creep recovery, impact strength, 24 h water absorption and color difference of PP based wood plastic composites were investigated by UV accelerated aging test. The results show that after 1000 h UV accelerated aging, the bending failure load retention rate, creep recovery rate and impact strength retention rate of the best benzotriazole light stabilizer composites are 92.56 %, 83.46 % and 79.25 %;24 h water absorption was 2.69 %;Color difference 22.69. Hindered amine light stabilizers are the second, and benzophenone light stabilizers are the worst.

关 键 词：木塑复合材料 光稳定剂 聚丙烯 耐候性能 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]