摘要
考察了温度、振幅、钢球直径等对ＰＶＣ在振动磨中降解的影响，确定ＰＶＣ力化学降解为无规断链过程。用力化学方法在振动磨中合成了ＭＭＡ－ＰＶＣ共聚物，通过ＩＲ和ＮＭＲ对ＭＭＡ－ＰＶＣ共聚物结构进行了鉴定，研究了ＰＶＣ／ＭＭＡ配比和振磨时间对共聚反应产率及共聚物组成的影响。热失重分析、ＳＥＭ观察和冲击强度测定结果表明，ＭＭＡ－ＰＶＣ共聚物比ＰＶＣ具有较高的热稳定性；
The effects of temperature, amplitude and the size of steel balls on degradation of PVC during vibromilling as well as the mechanism of random scission of the polymer chain were studied. The MMA PVC copolymer obtained was characterized by IR and NMR. The effects of vibromilling time and weight ratio of PVC to MMA on the yield of the copolymer and MMA content in the copolymer were optimized. Thermogravimetric analysis shows that heat resistance of MMA PVC copolymer better than that of PVC. The compatibility of PVC/PHMA is improved quite a lot after blending it with a small amount of MMA PVC copolymer.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1996年第5期42-46,共5页
Polymer Materials Science & Engineering
基金
国家教委博士点基金
国家自然科学基金
