The Preparation Of PA6/Wollastonite Fibers And Calcium Sulfate Whiskers And Properties’ Research

In this paper, the use of wollastonite fibers and calcium sulfate whiskers were carried outon PA6filling modification. A detailed study was conducted with two kinds of fibrous fillerto study the modification process and the performance impact of PA6. The inorganic mineralfiller surface treatment with silane coupling agent, and then with high melt index PP isprepared by mixing the filler masterbatch. According to the different proportion mix withPA6matrix resins and various additives, and preparation of PA6composite by melt blendingmethod. Study on the composite mechanical properties and thermal properties. The maincontents of the dissertation are as follows:(1) This paper selects KH-570surface treatment of wollastonite fibers and calciumsulfate whiskers, then mixed with high high melt index PP. Preparation of filling masterbatchby mill. Preparation of PA6/wollastonite fibers and calcium sulfate whiskers composite bymelt blending method.(2) Measure it’s mechanical properties，include tensile properties、flexural properties andimpact properties, etc. Measure it’s thermal property by DSC and heat deflection temperature,etc. It is studied that the content of inorganic filler affect physical-mechanical properties andthermal properties of composites.(3) The non-isothermal crystallization kinetics of PA6/wollastonite fibers and calciumsulfate whiskers composites was studied by DSC. Through the theoretical methods of thenon-isothermal crystallization kinetics (the Jeziorny, Ozawa and Mo methods) analysis andcalculate the relevant parameters of the non-isothermal crystallization process of composites.It is studied that the content of inorganic filler affect the rate of crystallization and the abilityof crystallization etc.