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Evaluation of compatibility in polymer blend systems by simultaneous DSC-FTIR measurement
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| | The dependence of viscosity of three binary polymer blend systems, poly (butylene terephthalale) (PBT)/polypropylene (PP) poly (butylene terephthalate)/polyamide-6(PA6),and poly(butylene terephthalate)/poly (ethylene terephthalate)(PET),on blend com- position is investigated and we fit the McAllister three-body model to all the systems by least-squares procedures.The character of the dependence of blend viscosity on composition varies widely for the three binary system... | | 本文研究了聚对苯二甲酸丁二酯(PBT)/聚丙烯(PP)、聚对苯二甲酸丁二酯/聚酰胺6(PA6)和聚对苯二甲酸丁二酯/聚对苯二甲酸乙二酯(PET)三种两元高聚物共混物的粘度对组成的依赖关系,并且对此采用McAllister三体模型以最小二乘法程序进行了拟合。三种共混体系的粘度对组成的依赖关系各不相同:在所研究的温度和切变速率范围内,PBT/PP共混体系是单词变化时,而PBT/PA6和PET/PBT共混体系都出现既有极大值又有极小值的现象。McAllister模型满意地描述了三种共混体系的粘度——组成关系。 | | 文摘来源 | | A series of poly (methyl methacrylate-methacrylic acid)/poly (ethylene oxide) intermacro-molecular complex has been successfully prepared through hydrogen bonding by mastication through a twin-roller. The experimental results show that the the complex can not be extracted by methanol and has a better thermal stability as compared with its constituent. The complex is an efficacious compati-bilizer for quite a few polymer blend systems. PMMA/PEO (67/33) after blending with a small amou... | | 本文研究了P(MMA-MAA)/PEO氢键复合物对一些聚合物共混体系的增容效应。首次用机械共混方法制备了P(MMA-MAA)/PEO氢键复合物。该复合物不能被甲醇革取,其热失重行为不是其组分聚合物的加和,表明此复合物不是简单的共混物。实验结果证实,该复合物可以改进PMMA/PEO体系的相容性,改善PVC共混体系的力学性能和加工性能。 | | 文摘来源 | | The recent progresses in the studies of the polymer blends were reviewed with 75 references . The interrelationship between structure , properties and morphology in heterogeneous polymer blend systems were discribed . Special attention is paid to the controls of themorphology, functionalization of polyolefines and compatibilizers .The new way is to develop compositions that may be processed at elevated temperatures as homogeneous melts from which a rigid reinforcing phase devel... | | 阐述了非均质聚合物共混物的结构、性能和形态的内在相互关系,重点介绍了形态的控制、聚烯烃的官能化及增容剂的种类和主要作用,指出目前的研究重点是开发更有效的共混手段及更有效的、多功能的、应用范围更广的增容剂。 | | 文摘来源 | |   | | << 更多相关文摘 |
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