Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (7): 1129.

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Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure

GUAN Qing, SHEN Kai-Zhi

State Key Laboratory of Polymer Materials Engineering, Plastics Engineering Department, Sichuan Union University, Chengdu, 610065

Received:1994-09-19 Revised:1994-12-14 Online:1995-07-24 Published:1995-07-24

Abstract

Abstract: This paper has studied the relationship of structure and properties of self-reinforced general grade high density polyethylene (HDPE) prepared by oscillating packing injection molding. The Young's modulus and tensile strength of HDPE have been enhanced greatly from original 1. 0 GPa, 23MPa to 5. 0 GPa, 93 MPa respectively. DSC, TEM and X-ray diffraction investigations indicate the improvement in mechanical properties is ascribed to the production of shish-kebab crystals, the orientation of molecular chains along the flow direction and well developed spherulites. Compared to high pressure injection molding, the method has good perspective in practical application.

Key words: Injection molding, Self-reinforcement, Polyethylene, High modulus, High strength

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GUAN Qing, SHEN Kai-Zhi. Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure[J]. Chem. J. Chinese Universities, 1995, 16(7): 1129.

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Structure and Properties of Self-Reinforced High Density Polyethylene Prepared by Oscillating Packing Injection Molding Under Low Pressure

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