CaSO_4纳米晶须对PBT-PE-液晶离聚物杂化材料形态结构与力学性能的影响  

Morphology and Mechanics Behavior of PBT-PE-Liquid Crystalline Ionomer Blends by Adding Nanometer CaSO_4 Whiskers

作　　者：徐新宇[1] 曲文忠[1] 于福家[1] 李明超[1] 张宝砚[1] 

机构地区：[1]东北大学分子科学与工程中心,沈阳110004

出　　处：《功能高分子学报》2010年第1期93-97,共5页Journal of Functional Polymers

基　　金：国家自然科学基金项目(50673105);国家863项目(2006AA02Z291);国防科工委(DBDX2008038)

摘　　要：通过熔融共混法将CaSO4纳米晶须和含磺酸离子的液晶离聚物(LCI)与聚对苯二甲酸丁二醇酯-聚乙烯(PBT-PE),制成PBT-PE-LCI-CaSO4纳米晶须杂化材料。通过DSC、红外图像系统分析和拉伸试验对共混体系的热性能、形态结构和力学性能进行了研究。结果表明:在共混体系中加入LCI提高了体系中PE的结晶温度和结晶度,并且LCI包裹着CaSO4纳米晶须,分散相PE均匀地分散在PBT基体中;当基体与CaSO4纳米晶须的质量比为100∶3时,杂化材料的力学性能最好。PBT-PE-Liquid crystalline ionomer blends were synthesized by nanometer CaSO_4 whiskers and liquid crystalline ionomer（LCI） blended with PBT and PE through melt blending.Thermal behavior,morphological structure,and mechanical properties of the blends were investigated by differential scanning calorimetry（DSC）,FT-IR imaging analysis,and tensile measurement.Results show that the crystallization temperature and crystallinity of PE phase are increaseing with the adding of LCI in the blends.The LCI surrounds nanometer CaSO_4 whiskers,and the reduced disperse phase size enables a finely dispersing phase at matrix.The mechanical properties of the blends are optimized when a proper amount of LCI and nanometer CaSO_4 whiskers（m（PBT-PE）∶m（CaSO_4）=100∶3） are added.

关 键 词：PBT PE 液晶离聚物 CaSO4纳米晶须 

分 类 号：O63[理学—高分子化学]