纳米二氧化硅改性CPE的研究

Study on the CPE /Nano-SiO_2 Blends

采用纳米级SiO2改性氯化聚乙烯(CPE),探讨了SiO2用量、表面处理方法、加工工艺等因素对改性CPE力学性能的影响。通过机械共混制备了CPE/SiO2共混材料,性能测试表明:改性后CPE的硬度、300%定伸应力、断裂伸长率、拉伸强度等力学性能均有较大的提高。

Influence of inorganic rigid particles (nanoSiO2) on the mechanical properties of CPE was studied. The chlorinated polyethylene elastomer (CPE) was made by chlorination of PE, and it was a kind of special synthesize rubber with excellent properties and wide applications. CPE/nanometer particles composites had been developed based on CPE blended with nanometer particles (nanoSiO2). The effects of different content of particles, surface process methods and machining technology on the CPE/ SiO2 blend were separately discussed. The results indicat that the hardness, 300% stress, elongation at break and tensile strength of CPE/SiO2 blend are enhanced after surface processing of the nanoSiO2. In addition, for nanoSiO2, the particles decentralization and the tensile strength of the composition which made by internal mixer are better than by open mill.