环境温度对PVC低发泡板性能的影响  

Effect of Ambient Temperature on Properties of PVC Low Foam Board

作　　者：刘洁 张丽丽 邹鹏飞 杨康 马雪娇 田北平 Liu Jie;Zhang Lili;Zou Pengfei;Yang Kang;Ma Xuejiao;Tian Beiping(School of Civil Engineering,Sichuan University of Science&Engineering,Sichuan,643000)

机构地区：[1]四川轻化工大学土木工程学院,四川643000

出　　处：《当代化工研究》2022年第24期57-59,共3页Modern Chemical Research

基　　金：2022年四川省科技厅青年科学基金项目“石墨烯球在离子液体中的摩擦学性能研究”(项目编号:2022NSFSC1992);2022年四川轻化工大学大学生创新创业项目“CaSO4晶须增强聚氯乙烯发泡护墙板韧性性能”(项目编号:cx2022164);2022年四川轻化工大学大学生创新创业项目“凹凸有治——首款用于治理垃圾填埋场的防渗吸附性凹凸棒土改性黄土”(项目编号:cx2022160)。

摘　　要：为研究环境温度对PVC低发泡复合板材的性能影响,对PVC低发泡复合板材二个尺寸进行不同温度处理,处理时间24h、48h、72h、96h、120h,并对处理前后板材纵向、横向、厚度方向的尺寸稳定性,板材力学性能,断口处扫描电镜进行了分析。结果表明;20℃下各方向尺寸保持不变;在40℃和-15℃时,各方向均有收缩;在实际应用中,特别是在夏季高温,PVC低发泡板材的尺寸效应对板材尺寸收缩的影响不大;温度的变化对PVC低发泡板拉伸、弯曲性能影响较大。In order to study the effect of ambient temperature on the performance of PVC low foaming composite board, two sizes of PVC low foaming composite board were treated at different temperatures for 24 h, 48 h, 72 h, 96 h and 120 h. The dimensional stability of the board before and after treatment in longitudinal, transverse and thickness direction and the mechanical properties of the board were analyzed by scanning electron microscope at the fracture point. The results showed that;The dimensions in each direction remain unchanged at 20 ℃. At 40 ℃ and -15 ℃, there is contraction in all directions. In practice, especially at high temperature in summer, the size effect of PVC low foaming sheet has little effect on the size shrinkage of sheet. The temperature change has great influence on the tensile and bending properties of PVC low foam board.

关 键 词：环境温度 PVC低发泡板 尺寸稳定性:力学性能 

分 类 号：TQ423.2[化学工程]