UHMWPE非等温结晶动力学研究STUDY ON NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR AND KINETICS OF UHMWPE
赵梓年;文志红;
摘要(Abstract):
用DSC法研究了3种不同相对分子质量UHMWPE的非等温结晶过程。结果表明,在2.5,5.0,10.0℃/min的降温速率范围内能很好地符合Gupta法和莫志深法的动力学方程;相对分子质量较小的UHMWPE易结晶;冷却速率增加,UHMWPE需更高的过冷度才能结晶。
关键词(KeyWords): 超高相对分子质量聚乙烯;非等温结晶;冷却速率;动力学
基金项目(Foundation):
作者(Authors): 赵梓年;文志红;
参考文献(References):
- 1廖凯荣,莫彬.聚乙烯的非等温结晶动力学研究.中山大学学报(自然科学版),1989,28(2):45~50
- 2 Liu J,Xie F.Lateral habits of single crystals of metallocene-catalyzed low molecular weight short chain branched poly-ethylene from the melt.Polymer,2000,41(8):8 573~8 577
- 3傅强,杜荣昵,丘方道等.茂金属聚乙烯的支化非均匀性与结晶形态.高分子学报,2000,(2):142~146
- 4张弓,傅强,申开智等.高强超韧高密度聚乙烯/聚丙烯共混物性能与微相分离结构的研究.高分子学报,2000,(3):306~310
- 5张发军,刘结平,傅强等.窄分子量分布茂金属短链支化聚乙烯结晶动力学.高分子学报,2000,(6):722~726
- 6 Ozawa T.Kinetics of non-isothermal crystallization.Poly-mer,1971,12(3):150~156
- 7 Ziabicki A.Theoretical analysis of oriented and non-isother-mal crystallizationⅡ:Extension of the kolmogoroff-avra mi-evans theory onto processes with variable rates and mecha-nisms.Colloid and Polymer Science,1974,252(6):433~438
- 8 Jeziorny A.Parameters characterizing the kinetics of thenon-isothermal crystallization of poly(ethylene terephtha-late)determined by DSC.Polymer,1978,19(10):1 142~1 149
- 9 Gupta A K,Purwar S T.Crystallization of PP in PP/SEBSblends and its correlation with tensile properties.J ApplPolym Sci,1984,29:1 595~1 609
- 10 Liu T,Mo Z,Zhang H.Nonisothermal crystallization be-havior of a novel poly(aryl ether ketone):PEDEKMK.JAppl Polym Sci,1998,67:815~821