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OALib Journal期刊
ISSN: 2333-9721
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热塑性聚乙烯醇/纳米羟基磷灰石复合材料的结构与性能
DOI: 10.3724/SP.J.1105.2013.13013, PP. 1247-1252
Keywords: 聚乙烯醇,纳米羟基磷灰石,热塑加工,结构性能
Abstract:
通过分子复合,结合固相剪切碾磨技术(S3M)制备了热塑性聚乙烯醇(PVA)/纳米羟基磷灰石(n-HA)复合材料,系统研究了复合材料的结构与性能.结果表明,磨盘力化学反应器强大的混合和力活化功能,增强了n-HA与PVA基体间氢键和配位作用,实现了n-HA粒子在PVA基体中的良好分散,提高了PVA的初始热分解温度,使复合材料具较宽热塑加工窗口,并在一定程度上阻碍了水分子渗透进入材料内部,降低了复合材料达到平衡溶胀所需时间和平衡溶胀率,提高了复合材料的耐水性;良好分散的n-HA粒子可在材料受外力作用时起到很好的应力分散,有效增强PVA基体,提高了复合材料的力学性能.
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