Study on Preparation and Performance of Thermoplastic Cross-linked Polyethylene

doi:10.19491/j.issn.1001-9278.2019.01.006

China Plastics ›› 2019, Vol. 33 ›› Issue (1): 29-32.DOI: 10.19491/j.issn.1001-9278.2019.01.006

Study on Preparation and Performance of Thermoplastic Cross-linked Polyethylene

Received:2018-08-12 Revised:2018-10-08 Online:2019-01-26 Published:2019-02-25

Abstract

Abstract: A new type of thermoplastic cross-linked polyethylene (TPEX) was prepared by crosslinking of PE-HD and PERT blends. This method not only maintained the thermoplasticity of PERT but also improved its heat resistance and creep resistance close to PEX due to partial crosslinking. TPEX gained the optimum comprehensive properties at a melt flow rate of 1~2 g/10 min and a crosslinking degree of (2±1) %, which met the requirement for processing and applications. TPEX also exhibited good heat resistance with a Vicat softening point of 126.1 ℃. The thermal strength and tensile creep properties of TPEX were characterized by thermal tensile strength at a given elongation and dynamic mechanical analysis. The results indicated that TPEX had higher thermal strength than PERT and PEX but similar creep resistance with PERT and PEX.

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Study on Preparation and Performance of Thermoplastic Cross-linked Polyethylene

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