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我们研究了偶联剂类型、处理方法、所用聚合物种类对漂珠/聚合物体系的界面形态和力学性能的影响。 漂珠是由粉煤灰中提取的比重不到0.4、熔点约1400℃的空心微珠,用硅偶联剂和钛酸酯偶联剂的水溶液预处理或掺混入树脂中,制成漂珠/不饱和聚酯和漂珠/糠叉丙酮环氧复合材料。结果表明:KH550和Tc—6对这二种复合材料的干湿强度都有较大提高,但KH550对漂珠/糠叉丙酮环氧复合体系的湿强改进更明显。由SEM断面形态也可看到漂珠用偶联剂浸泡后,在其表面产生一层有机聚硅氧烷或聚钛酸酯膜,制得的复合材料用水煮后,该膜也不易脱落。
We investigated the effect of coupling agent type, treatment method, the type of polymer used on the interfacial morphology and mechanical properties of the pearl / polymer system. Floating bead is extracted by fly ash in the proportion of less than 0.4, the melting point of about 1400 ° C hollow beads, with a coupling agent and titanate coupling agent aqueous solution pretreatment or blending into the resin, made of floating beads / Unsaturated Polyester and Bead / Fork Acetone Epoxy Composites. The results showed that both KH550 and Tc-6 improved the wet and dry strength of the two composites, but the wet strength of KH550 on the bleached beads / furfural epoxy composite system was more obvious. SEM cross-sectional morphology can also be seen floating beads with a coupling agent soaked in its surface layer of organic polysiloxane or polytitanate film, the resulting composite material with boiled, the film is not easy to fall off.