聚丙烯纤维玻化微珠复合保温材料的性能

发布时间：2018-05-14 01:32

本文选题：玻化微珠 + 聚丙烯纤维　；参考：《建筑材料学报》2015年04期

【摘要】：分别采用碱处理、醋酸乙烯-乙烯共聚乳液(VAE乳液)包覆处理对聚丙烯纤维进行表面改性,研究了聚丙烯纤维掺量(质量分数,下同)对玻化微珠复合保温材料力学性能和软化系数的影响.结果表明:与空白样品相比,聚丙烯纤维掺量为1.0%时,玻化微珠复合保温材料的抗折强度和抗压强度分别提高93.75%和7.30%;聚丙烯纤维经过碱处理和VAE乳液包覆处理均可改善复合保温材料的界面结合状况,与未改性聚丙烯纤维相比,经碱处理后的改性聚丙烯纤维使复合保温材料的抗折强度和抗压强度分别提高了14.52%和4.08%,软化系数基本无变化;经VAE乳液包覆处理后的聚丙烯纤维使复合保温材料的抗折强度和抗压强度分别提高了58.06%和10.20%,软化系数增加了12.50%.采用扫描电子显微镜(SEM)对聚丙烯纤维表面微观形貌及复合保温材料断口形貌进行观察,探讨了改性聚丙烯纤维对玻化微珠复合保温材料的增强机制.
[Abstract]:Polypropylene fiber was modified by alkali treatment and VAE emulsion coating respectively. The content (mass fraction) of polypropylene fiber was studied. The effect on mechanical properties and softening coefficient of glass microbead composite insulation material. The results show that when the content of polypropylene fiber is 1.0, compared with the blank sample, The flexural strength and compressive strength of glass microbead composite insulation materials were increased by 93.75% and 7.30%, respectively, and the interfacial bonding of composite insulation materials could be improved by alkali treatment and VAE emulsion coating treatment, compared with that of unmodified polypropylene fibers. The modified polypropylene fiber after alkali treatment increased the flexural strength and compressive strength of the composite insulation material by 14.52% and 4.08%, respectively, and the softening coefficient was basically unchanged. The flexural strength and compressive strength of the composite insulation materials were increased by 58.06% and 10.20%, respectively, and the softening coefficient increased by 12.50% by the polypropylene fiber coated with VAE emulsion. Scanning electron microscopy (SEM) was used to observe the surface morphology of polypropylene fiber and the fracture morphology of composite insulation material. The reinforcement mechanism of modified polypropylene fiber on glass microbead composite insulation material was discussed.
【作者单位】：济南大学建筑材料制备与测试技术山东省重点实验室;
【基金】：2012年山东省科技发展计划项目(SGG1205)
【分类号】：TU551

【参考文献】