Effect of Talc on High-temperature ExothermicPeak and Properties of Polypropylene

International Conference on Computer Information and Automation Engineering

计算机科学;运输工程

Chen, Q.^1 ; Yu, R.B.^1

PolymerPhysicsLaboratory, East China University of Science and Technology, 130 Meilong Road, Shanghai

200237, China^1

关键词: Decomposition temperature;    DSC curves;    Enthalpy change;    Exothermic peaks;    High temperature;    Molecular chains;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/359/1/012031/pdf
DOI  :  10.1088/1757-899X/359/1/012031

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The exothermic peak at high temperature of pure polypropylene (PP) was found in the DSC curve, which has not been reported in the literature. In this paper, Talc was added into PP to obtain talc-modified PP. When the content of talc was 20%, the exothermic peak at high temperature of the modified PP disappeared. The reason for disappearance of high-temperature exothermic peak is discussed. The conclusions are as follows: (1) With increase in talc, the enthalpy change of high-temperature exothermic peak was lower; (2) When the content of talc was up to 20%, the relaxation time increased and the mobility of molecular chain decreased;(3) The decomposition temperature of PP containing 20% talc was up to 325°C (300°C for pure PP), and the maximum decomposition temperature was 367°C (328°C for pure PP).