成核剂C对聚甲醛成核作用的探讨  

An Investigation on the Nucleation of Nucleator C to Polyacetal

作　　者：徐卫兵[1] 朱士旺[1] 

机构地区：[1]合肥工业大学化工系,230009

出　　处：《塑料工业》1995年第1期26-27,33,共3页China Plastics Industry

基　　金：国家"八.五"重点科技攻关;国家自然科学基金资助项目

摘　　要：本文利用差热分析仪、偏光显微镜、广角X射线衍射仪及力学性能测试设备考察了成核剂C对聚甲醛的成核作用.实验果表明,成核剂C的加入,使POM球晶细化,结晶速度加快,结晶过程为异相成核三维生长过程,且不改变POM的结晶晶型但结晶度略有下降,微晶尺寸增大.含有成核剂C的POM具有较高的缺口冲击强度,使POM的缺口敏感性下降,因而可扩大POM的应用领域.In this paper the nucleation of nucleator C to polyacetal was investigated by means of DSC, PLM, WAXD and testing of mechanical properties. The results proclaimed that nucleator C caused the thinner spherulites of POM and a greater growth rate, which was a three dimensional heterogenous growth process, and the crystal system of POM was not changed, but the crys-tallinity of POM decreased, the crystallite size of POM increased. POM with nucleator C has good impact resistance and improved notch sensitivity, having a wide application field.

关 键 词：聚甲醛 成核剂 塑料 

分 类 号：TQ326.51[化学工程—合成树脂塑料工业]