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Study on the Structure and Property of Attapulgite/Polyolefin Thermoplastic Elastomer Composties

TIAN Ming, QU Cheng dong, LIU Li, FENG Yu xing, ZHANG Li qun (Institute of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China)  
Process temperature,coupling agent KH550-treated attapulgite and the use of compatibilizing agent maleic acid-grafted ethylene octane copolymer(EOC-g-MAH)on the properties of AT/EOC composites were studied.Experimental datum show that higher process temperature resulting in lower melting viscosity goes against the disperse of attapulgite,and that KH550-treated attapulgite can drastically enhance the properties of AT/EOC composites if EOC-g-MAH with the higher graft ratio is added at appropriate process temperature.When the contents of KH550-treated attapulgite and EOC-g-MAH is 10 % and 15 % respectively,compared with crude EOC,100 % tensile modulus,tensile strength and tear strength of AT/EOC composites increase by 104 %,65 %,25 % respectively.Analysis of SEM,TEM and DSC of AT/EOC composites showed that attapulgite still dispersed in a micrometer size in prepared AT/EOC composites,not at expected nanometer size,and it hardly affects on the crystallity and melting of EOC.
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