【摘要】 采用预聚法制备了聚氨酯(PU)/沸石分子筛(zeo lite 13X)复合材料,并利用XRD、DSC和TG等手段表征了复合材料的晶态、硬链段的结晶及熔融温度、材料的耐热性能。结果表明,随着沸石分子筛在体系中加入量的增大,PU/13X复合材料的硬链段结晶度减小,而硬链段和软链段之间的混乱度增大,硬链段的结晶形态发生改变,晶面间距增大。力学性能测试表明,分子筛添加量小于7%时,拉伸强度和撕裂强度明显提高。更多还原

【Abstract】 The novel polyurethane/zeolites composites were made with raw materials(PTMEG-TDI-MOCA),and prepolymerization methed was used.The morphology and thermal stability characterized by DSC,WAXD and TG. The results show that PU/zeolite composites have good mechanical properties.The DSC results revealed that zeolite added in PU affect on the crysterization of PU hard segment and crysterization of hard segment decrease with zeolite content in PU increasing.The DSC results and XRD patterns indicated that the crystal type of hard segment of PU/zeolite composites changed.The TG results said that PU/zeolite composites had better thermal stability than pure PU.更多还原