Characterizations of Polystyrene-Based Hybrid Particles Containing Hydrophobic Mg(OH)2 Powder and Composites Fabricated by Employing Resultant Hybrid Particles

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2007-10-30 DOI:10.1155/2007/19232

S. Kimura, T. Hyodo, Y. Shimizu, M. Egashira

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Abstract

Polystyrene (PS)-based hybrid particles containing a large amount of Mg(OH)2 powder treated with methylhydrogen polysiloxane (MHS) were fabricated by a bulk and subsequent suspension two-step polymerization method. All the particles fabricated showed spherical shape and their particle sizes were about 500 μm, irrespective of the additive amount of the Mg(OH)2 powder modified with MHS (ST-1). The actual content of ST-1 powder incorporated inside each kind of hybrid particle was almost the same as that in the raw mixture, and agglomeration of ST-1 powder was hardly observed inside the hybrid particles. The compressive strength of the hybrid particles remained almost unchanged, even when the ST-1 powder content increased from 10 to 50 phr. Furthermore, a composite fabricated by employing the hybrid particles achieved homogenous distribution of ST-1 powder and showed a higher oxygen index than that of a composite fabricated by directly mixing of PS pellets and ST-1 powder.

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含疏水性Mg(OH)2粉末的聚苯乙烯基杂化颗粒及其复合材料的表征

采用本体-后悬浮两步聚合法制备了含有大量Mg(OH)2粉末的聚苯乙烯(PS)基杂化颗粒，并用甲基氢聚硅氧烷(MHS)处理。与MHS (ST-1)改性Mg(OH)2粉末的添加量无关，制备的颗粒均呈球形，粒径均在500 μm左右。每种杂化颗粒内部实际掺入的ST-1粉末含量与原混合料中的含量基本相同，杂化颗粒内部几乎没有ST-1粉末的结块现象。当ST-1粉末含量从10 phr增加到50 phr时，杂化颗粒的抗压强度几乎保持不变。此外，采用混合颗粒制备的复合材料实现了ST-1粉末的均匀分布，并且比直接将PS颗粒与ST-1粉末混合制备的复合材料具有更高的氧指数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)