溶液共混法制备PBT/石墨烯复合材料及其性能研究

摘要：采用溶液共混法制备石墨烯（GS）/聚对苯二甲酸丁二醇酯（PBT）复合材料和表面功能化石墨烯（GS-KH550）/聚对苯二甲酸丁二醇酯（PBT）复合材料，并对PBT、GS/PBT、GS-KH550/PBT的性能进行研究。结果表明，石墨烯和表面功能化石墨的加入均使PBT的熔融温度（Tm）和结晶温度(Tc)均略有升高，促进了PBT的结晶，PBT的结晶度和晶粒尺寸略有增加，使结晶更完善，但并未改变PBT结晶的类型；表面功能化石墨烯（GS-KH550）/聚对苯二甲酸丁二醇酯（PBT）复合材料的缺口冲击强度有明显的提高。

Preparation and Performance of Polybutylene Terephthalate/Grapheme Sheet Composites by Solution Mixing

Abstract: The composites of grapheme sheet（GS）/ polybutylene terephthalate(PBT) and functional grapheme sheet(GS-KH550)/ polybutylene terephthalate(PBT) are fabricated by solution blending , the performance of PBT、GS/PBT、GS-KH550/PBT composites have been investigated. The results show that the melting temperature(Tm) and the crystallization temperature(Tc) of PBT increase slightly because of the addtion of grapheme sheet; GS and GS-KH550 promote crystallization of PBA and make it crystallizate perfectly , the crystallinity and crystal size increase but they don’t change the crystal type of PBT; The notched impact strength of functional grapheme sheet(GS-KH550)/ polybutylene terephthalate(PBT) composite obviously improve.