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首页> 外文期刊>Journal of Materials Science >Control of morphology and properties by the selective distribution of nano-silica particles with different surface characteristics in PA6/ABS blends
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Control of morphology and properties by the selective distribution of nano-silica particles with different surface characteristics in PA6/ABS blends

机译:通过在PA6 / ABS共混物中选择性分布具有不同表面特性的纳米二氧化硅颗粒来控制形态和性能

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摘要

The roles of nano-silica particles in the morphology, rheological, crystallization, and melting properties of polyamide 6/acrylonitrile-butadiene- styrene (PA6/ABS) blends were investigated. With the addition of nano-silica particles possessing different surface characteristics (hydrophilic or hydrophobic), the blends showed a notable difference in the morphology of the dispersed ABS phase in the melt or solid state, which is mainly caused by different distribution states for the two kinds of nano-silica particles. Particularly, it was found that the hydrophilic nano-silica particles tended to distribute in PA6 matrix, whereas the hydrophobic nano-silica particles were almost located at the PA6/ABS interface. Besides, the shear thinning behavior of the composites was significantly changed with the incorporation of hydrophobic nano-silica particles and the contribution from the interface was regarded as the dominated one to influence the rheological properties. Finally, with different surface characteristics and their distribution states, it was found that nano-silica particles can play different roles in crystallization and melting properties.
机译:研究了纳米二氧化硅颗粒在聚酰胺6 /丙烯腈-丁二烯-苯乙烯(PA6 / ABS)共混物的形态,流变,结晶和熔融性能中的作用。加入具有不同表面特性(亲水或疏水)的纳米二氧化硅粒子后,共混物在熔融或固态状态下分散的ABS相的形态表现出显着差异,这主要是由于两者的分布状态不同种纳米二氧化硅颗粒。特别地,发现亲水性纳米二氧化硅颗粒倾向于分布在PA6基质中,而疏水性纳米二氧化硅颗粒几乎位于PA6 / ABS界面处。此外,随着疏水性纳米二氧化硅颗粒的加入,复合材料的剪切稀化行为发生了显着变化,界面的贡献被认为是影响流变性能的主要因素。最后,发现具有不同的表面特性和它们的分布状态,纳米二氧化硅颗粒可以在结晶和熔融性质中发挥不同的作用。

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