PET／HMFNC-MB复合材料的非等温结晶及熔融行为  

Non-isothermal Crystallization and Melting behaviors of PET/HMFNC-MB composite

作　　者：褚艳红[1,2] 郭欢欢[1] 郑丽娜[1] 王经武[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450052 [2]河南省分析测试中心,河南郑州450002

出　　处：《塑料工业》2008年第B06期155-157,166,共4页China Plastics Industry

摘　　要：将H型多功能纳米碳酸钙母料(HMFNC-MB)与PET热机械反应性共混,制得了HMFNC-MB含量不同的PET/HMFNC-MB复合材料,采用DSC法研究了复合材料中PET的玻璃化转变,非等温冷、热结晶和熔融行为以及HDPE的非等温热结晶行为。结果表明,与原料PET相比,PET/HMFNC-MB系列复合材料中PET的玻璃化转变温度T_g都有不同程度提高,最大提高幅度为6.7℃;冷结晶峰温(T_(cc)~p)均有不同程度下降,最大下降幅度达到10.2℃,结晶速率明显加快,过热度减小;熔融峰起始温度(T_m^o)和峰温(T_m^p)均有不同程度提高,最大提高幅度分别为9.0℃和3.5℃;热结晶峰起始温度和峰顶温虽均略有下降,但结晶速率明显加快。与原料HDPE的相比,PET/HMFNCMB复合材料中HDPE的热结晶峰温降低了大约21℃,结晶过程很弥散。PET/H-type multi functional nano-CaCO3 masterbatch （HMFNC-MB） composites were prepared by mechanical reaction blending of PET pellets with HMFNC-MB. The non-isothermal crystallization and melting behaviors of PET/HMFNC-MB composites were researched by means of DSC. The results showed the maximum value of the glass transition temperature of PET/HMFNC-MB composites increased 6.7 ℃ ; the maximum value of the melting peak onset temperature, peak temperature （ Tmp） of PET/HMFNC-MB composites increased 9.0 ℃ and 3.5 ℃ respectively; and all the maximum value of the cold crystallization peak temperature of PET/HMFNC-MB composites decreased 10.2 ℃ with the different dosages of HMFNC-MB. Although, the heating crystallization peak temperature and onset temperature of PET/HMFNC-MB composites decreased in some degree, the rates of crystallization were improved obviously. In compared with raw HDPE, the heating crystallization peak of HDPE decreased 21 ℃ in PET/HMFNC-MB composites, and the crystallization process was dispersive.

关 键 词：聚对苯二甲酸乙二醇酯(PET) H型多功能纳米CaCO3母料 复合材料 非等温结晶熔融行为 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]