China Plastics ›› 2010, Vol. 24 ›› Issue (04): 76-79 .DOI: 10.19491/j.issn.1001-9278.2010.04.016

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Effect of Injection Molding Process on Environmental Stress Cracking Behavior of Polycarbonate Parts

HAN Jian HAN Dongxue LIU Chuntai CHEN Jingbo SHEN Changyu   

  • Received:2009-12-31 Revised:1900-01-01 Online:2010-04-26 Published:2010-04-26

Abstract: This work investigates the environment stress cracking behavior of polycarbonate (PC) injection molded plates with different process conditions. When exposed to carbon tetrachloride, crack appeared at the edge surface of the molded parts. Higher injection temperature increases resistance to the environmental stress crack, while higher packing pressure makes the cracking more serious. Additional study was concentrated on the effect of molecular orientation and residual stresses on crack formation of the parts.

Key words: polycarbonate, environment stress cracking, molecular orientation, birefringence, residual stress

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