Non-isothermal Crystallization Kinetics Behavior of Fly Ash/Polypropylene Composites

HE Xiao-fang; LUO Si-hai; ZHANG Chong; CAO Xin-xin

Materials and Mechanical Engineering > 2014 > 38(1): 79-85.

HE Xiao-fang, LUO Si-hai, ZHANG Chong, CAO Xin-xin. Non-isothermal Crystallization Kinetics Behavior of Fly Ash/Polypropylene Composites[J]. Materials and Mechanical Engineering, 2014, 38(1): 79-85.

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Non-isothermal Crystallization Kinetics Behavior of Fly Ash/Polypropylene Composites

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Received Date: October 24, 2013

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Abstract

Non-isothermal crystallization kinetics behavior of fly ash (FA)/polypropylene (PP) composites was studied by differential scanning calorimetry (DSC), and crystallization kinetics of Jeziorny and Mo methods was discussed, at last, The activation energy was computed by Flynn-Wall-Ozawa equation. The results show that, after adding FA into PP, the crystallization onset temperature (To), crystallization peak temperature (Tp), Avrami exponent n, half-time of crystallization (t1/2) and cooling rate F(T) of the composites increased, and crystallization rate constant (Zc) decreased. When FA adding content was 15wt%, t1/2, activation energy and F(T) was the smallest, and Zc was the highest. The activation energy of the composites were higher than the pure PP.
- fly ash,
- polypropylene,
- non-isothermal crystallization,
- kinetics

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