摘要
无机粒子经甲苯二异氰酸酯(TDI)和丙烯酸羟丙酯 (HPA)表面修饰,分别接枝包覆聚甲基丙烯酸甲酯 (PMMA)层和甲基丙烯酸甲酯 丙烯酸丁酯共聚物(PMMA Co PBA)层,构成复合粒子。通过傅立叶变换红外光谱仪 (FTIR)、差示扫描量热仪(DSC)及扫描电子显微镜(SEM)等方法检测,确认了它们的形态结构,研究了它们混配成聚氯乙烯 (PVC)材料的力学性能和韧化机制。结果表明:其最大拉伸强度、冲击强度数值比未经包覆处理的对照组有所提高,提高率分别达到136%和 162%,可作为新型强韧化填充改性剂用于PVC电缆料。
Inorganic particles were modified with toluylene diisocyanate(TDI) and hydroxypropyl acrylate(HPA) on the surface, modified particles were surrounded with PMMA and PMMA-Co-PBA respectively via the method of grafting polymerization, and then the composite particles were formed. The morphology and structure of composite particles were recognized by using Fourier transform infrared spectrometer (FTIR),differential scanning calorimetry (DSC) and scanning electron microscope (SEM). The mechanical properties and toughening mechanism of the polyvinyl chloride (PVC) mixed up composite particles were investigated. To compare these value with one of comparison group of the untreated talcum particles,the results indicate that peak value of the tensile strength and impact strength increase 136% and 162% respectively. It is regarded as a new type of the modified toughening filling used in the PVC cables.
出处
《现代塑料加工应用》
CAS
北大核心
2005年第1期8-11,共4页
Modern Plastics Processing and Applications
