辐照交联PVC/环氧树脂固化复合发泡材料的制备及性能  

Preparation and properties of irradiation cross⁃linked PVC/epoxy cured foaming materials

作　　者：徐杰 付栋梁 包俊杰 李城城 钟进福 李广富 XU Jie;FU Dongliang;BAO Junjie;LI Chengcheng;ZHONG Jinfu;LI Guangfu(Zhejiang Runyang New Material Technology Co,Ltd,Huzhou 313105,China)

机构地区：[1]浙江润阳新材料科技股份有限公司,浙江湖州313105

出　　处：《中国塑料》2023年第3期35-41,共7页China Plastics

摘　　要：采用熔融共混法和辐照交联工艺成功制备了一系列聚氯乙烯(PVC)/环氧树脂(E-12)/马来海松酸酐(MPA)复合发泡材料。通过傅里叶变换红外光谱仪(FTIR)和核磁共振仪(1H-NMR、13C-NMR)表征了MPA的化学结构;通过凝胶含量、力学性能、扫描电子显微镜(SEM)和吸水率等试验,探究了E-12/MPA(EM)固化物含量对PVC/E-12/MPA复合发泡材料性能的影响。结果表明,当EM固化物含量为10%(质量分数,下同)时,PVC/E-12/MPA复合发泡材料的凝胶含量为42.3%,较改性前提高了9.9%,拉伸强度提高了23.4%,压缩强度提高了26.7%,压缩模量提高了32.5%;断裂伸长率从286.11%降至217.68%,吸水率从改性前1.5%增至3.4%,同时具有优异的泡孔结构。A series of poly(vinyl chloride)(PVC)/epoxy resin(E⁃12)/maleimaric anhydride(MPA)composite foaming materials were successfully prepared through melt blending and irradiation crosslinking.The chemical structure of MPA was characterized using Fourier⁃transform infrared spectroscopy and nuclear magnetic resonance spectroscopy(1H⁃NMR and 13C⁃NMR).The effects of curing content of E⁃12/MPA(EM)on the properties of the composite foaming materials were investigated by means of gelatin content,mechanical measurement,scanning electron microscopy,and water ab⁃sorption tests.The results indicated that the composite foaming materials containing 10 wt%EM obtained a gelatin con⁃tent of 42.3 wt%,which was 9.9%higher than that before modification.Compared to pure PVC foaming material,the composite foaming ones showed an increase in tensile strength by 23.4%,in compression strength by 26.7%,and in compression modulus by 32.5%.The elongation at break of the composite foaming materials decreased from 306.33%to 220.68%,and their water absorption increased from 1.5%to 3.4%.The composite foaming materials also exhibit⁃ed a good cell structure.

关 键 词：聚氯乙烯 环氧树脂 力学性能 发泡行为 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]