中国塑料

中国塑料 ›› 2014, Vol. 28 ›› Issue (07): 49-54 .DOI: 10.19491/j.issn.1001-9278.2014.07.010

• 材料与性能 • 上一篇    

N-苯基马来酰亚胺改性酚醛/TiO2纳米复合材料的制备及性能研究

张东亮,倪鑫,胡杰   

  1. 常州大学
  • 收稿日期:2014-01-15 修回日期:2014-03-24 出版日期:2014-07-26 发布日期:2014-07-26

Preparation and Properties of PPMF/TiO2 Nano-composites

  • Received:2014-01-15 Revised:2014-03-24 Online:2014-07-26 Published:2014-07-26

摘要： 制备了新型N苯基马来酰亚胺（N-PMI）改性酚醛树脂（PF）/TiO2 (PPMF/TiO2) 纳米复合材料，研究了纳米TiO2对加成固化型PPMF树脂固化及固化产物性能的影响，采用傅里叶红外光谱仪、热失重分析仪、扫描电子显微镜等对所制备复合材料的结构及性能进行了研究。结果表明，纳米TiO2表面的羟基可通过化学键缩合到PF上，且能参与并催化树脂固化反应；当纳米TiO2用量为5 %（质量分数，下同）时，纳米颗粒能均匀分散在树脂基体中，复合材料的力学性能达到最佳；过氧化二异丙苯（DCP）可促进PPMF树脂的固化且在DCP用量为2 %、150 ℃、固化2 h，PPMF/TiO2能达到较高的凝胶含量；PPMF/TiO2复合材料的耐热性能明显优于PPMF树脂。

关键词: 酚醛树脂, N-苯基马来酰亚胺, 纳米二氧化钛, 加成, 固化, 引发剂

Abstract: N-phenyl maleimide modified phenolic resin/nano-TiO2(PPMF/TiO2) composites were prepared，and the effects of nanoTiO2 on curing reaction and properties of PPMF/TiO2 were studied. Structure，micro-morphology, and properties of PPMF/TiO2 nanocomposites were characterized by FTIR，TG，and SEM,respectively. It was found that the nanoTiO2 can be attached to surface of phenolic via condensation of surface hydroxyl groups, on the condensates to resin by chemical bond，the nano-TiO2 may also play a catalytic role in the curing process. When the content of nano-TiO2 was 5 %，it could be uniformly dispersed in the resin matrix, and the mechanical properties were optimal. Adding dicumyl peroxide (DCP) in the curing system could effectively increase the degree of crosslinking of PPMF. Thermal resistance PPMF/TiO2 composites was better than that of conventional phenolic and neat PPMF resins.

Key words: phenolic resin, N-phenyl maleimide, nano titania, addition, curing, initiator

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