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首页> 外文会议>International Conference on Advances in Materials and Manufacturing Processes >Particle size, structure and powdering process of calcium carbonate nanoparticles filled powdered styrene-butadiene rubber
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Particle size, structure and powdering process of calcium carbonate nanoparticles filled powdered styrene-butadiene rubber

机译：碳酸钙纳米粒子填充粉末苯乙烯 - 丁二烯橡胶的粒度，结构和粉末工艺

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摘要

Calcium carbonate nanoparticles (nano-CaCO_3) filled powdered styrene-butadiene rubber (P(SBR/CaCO_3) was prepared by adding nano-CaCO_3 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/CaCO_3) 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-CaCO_3 particles (adsorption process) to form "new particles" and (ii) the formation of P(SBR/CaCO_3) by coagulating "new particles". The SEM results also shown that the nano-CaCO_3 and rubber matrix have formed a macroscopic homogenization in the (P(SBR/CaCO_3) particles and nano-CaCO_3 dispersed uniformly in the rubber matrix with an average diameter of approximately 50 nm.
机译：通过将纳米-CaCo_3颗粒，密封剂和凝结剂加入苯乙烯 - 丁二烯橡胶（SBR）胶乳通过凝聚来制备碳酸钙纳米粒子（纳米Caco_3）填充的粉末状苯乙烯 - 丁二烯橡胶（P（SBR / Caco_3），以及粒度分布研究了结构。扫描电子显微镜（SEM）用于研究（P（SBR / Caco_3）颗粒结构，并提出粉末模型来描述粉末过程。该方法包括：（i）与之相关的乳胶颗粒分散的纳米CaCO_3颗粒（吸附过程）形成“新颗粒”和（ii）通过凝结“新颗粒”来形成p（SBR / CaCO_3）。SEM结果还表明纳米Caco_3和橡胶基质具有在（P（SBR / CACO_3）颗粒中形成宏观均匀化，纳米CACO_3均匀地分散在橡胶基质中，平均直径约为50nm。

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