热塑性聚氨酯弹性体/氢氧化铝纳米复合材料的热性能分析  

Study on thermal property of TPU elastomer/aluminum trihydrate nano-composites

作　　者：付青存 甘争艳 李庆宝 宋文生[2] 

机构地区：[1]新疆化学工业学校化工系,新疆乌鲁木齐830021 [2]河南科技大学高分子科学与纳米技术重点实验室,河南洛阳471003

出　　处：《弹性体》2010年第5期47-49,共3页China Elastomerics

基　　金：河南省高等学校青年骨干教师基金资助计划项目(豫教高[2005]461号)

摘　　要：以TPU为基体,纳米氢氧化铝(ATH)作为主要改性剂,采用溶液-凝胶法制备ATH/聚醚分散体系,原位聚合法制备TPU/ATH纳米复合材料,并对复合材料的热性能进行分析。DSC分析表明,纳米ATH的添加没有改变TPU微相分离结构,但使TPU软段的玻璃化温度和硬段的分解温度有所提高,说明纳米ATH既存在于聚氨酯大分子软段区又存在于硬段区;TGA-DTA分析表明,纳米ATH改性后的TPU耐热性有所提高,分解温程拓宽约20℃。This research took TPU as a matrix and nano-ATH as a main modifier.The dispersion system of ATH polyether was prepared by means of the sol-gel method.TPU/ATH nano-composite materials were prepared through the process of in-situ polymerization,and its thermal analysis was taken.The result indicated that,（1） DSC data showed the addition of nano-ATH to composites did not changed the phase microstructure of TPU,but Tg of soft segment and Tm of hard segment in TPU were enhanced.The fact showed that nano-ATH consisted in both soft segment section and hard segment section in TPU.（2） TGA-DTA analysis showed that heat-resisting performance of composites was evidently improved,and decomposition temperature scope was expanded about 20 ℃.

关 键 词：热塑性聚氨酯弹性体 氢氧化铝 纳米复合材料 热分析 

分 类 号：TQ334.1[化学工程—橡胶工业]