PMMA透光纳米复合材料的制备

利用同轴共纺技术制备出具有壳-芯结构的复合纳米纤维,再通过热压成型工艺将壳层的聚甲基丙烯酸甲酯(PMMA)熔融,留下芯层的尼龙6(PA-6)纳米纤维作为增强材料,由此制备得到纳米纤维增强透光复合材料.实验结果表明,该复合材料较之纯PMMA板在力学性能上有明显改善,透光率则基本不受影响.应用SEM、TEM以及FTIR研究了复合纳米纤维的形貌和结构,并根据复合材料力学试验断口的SEM照片,分析了PA-6纳米纤维含量对复合材料力学性能和透光性能的影响.

Development of Pmma Transparent Nanocomposites

Co-axial electrospinning technique is utilized in preparing core-shell composite nanofibers,in which the shell material is PMMA and the core is PA-6.After a hot press treatment,the molten PMMA functions as resin matrix while PA-6 nanofibers as reinforcing material,resulting in a nanofiber reinforced transparent composite.Experiment results show that mechanical performance of the nanofiber reinforced composite is obviously improved without a significant influence on its transparency.Morphological and structural characterizations for the composite nanofibers and the transparent composites are realized in terms of SEM,TEM and FTIR.From the SEM pictures of the fractured composite samples,the effect of PA-6 reinforcing nanofibers on their mechanical and transparent behaviors is analyzed and discussed.