文献类型：期刊文献

英文题名：Particle size, structure and powdering process of calcium carbonate nanoparticles filled powdered styrene-butadiene rubber

作者：Zhang, Zhouda[1]; Chen, Xuemei[1]; Qu, Guoliang[1]

机构：[1] School of Chemical Engineering, East China University of Science and Technology, National Engineering Research Center of Ultrafine Powder, Shanghai 200237, China

年份：2012

卷号：415-417

起止页码：237

外文期刊名：Advanced Materials Research

收录：EI(收录号：20115214644554)

语种：英文

外文关键词：Calcite - Butadiene - Fillers - Particle size - Rubber - Filled polymers - Particle size analysis - Styrene - Latexes - Scanning electron microscopy - Nanoparticles

摘要：Calcium carbonate nanoparticles (nano-CaCO3) filled powdered styrene-butadiene rubber (P(SBR/CaCO3) was prepared by adding nano-CaCO3 particles, encapsulant and coagulant to styrene-butadiene rubber (SBR) latex by coacervation, and the particle size distribution, structure were studied. Scanning electron microscopy (SEM) was used to investigate the (P(SBR/CaCO3) particle structure, and a powdering model was proposed to describe the powdering process. The process includes: (i) the latex particles associated with the dispersed nano-CaCO3 particles (adsorption process) to form "new particles" and (ii) the formation of P(SBR/CaCO3) by coagulating "new particles". The SEM results also shown that the nano-CaCO3 and rubber matrix have formed a macroscopic homogenization in the (P(SBR/CaCO3) particles and nano-CaCO3 dispersed uniformly in the rubber matrix with an average diameter of approximately 50 nm.