Temperature Profile of PE-HD/PP Blends during the Cooling Stage in Inj ection Molding

doi:10.19491/j.issn.1001-9278.2008.05.011

China Plastics ›› 2008, Vol. 22 ›› Issue (05): 53-58 .DOI: 10.19491/j.issn.1001-9278.2008.05.011

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Temperature Profile of PE-HD/PP Blends during the Cooling Stage in Inj ection Molding

YIN Hai一ying，BAI Yu，YANG Ming-bo，XU Peng-fei，FU Xiao-rong

1.College of Chemical Engineering, Sichuan University, Chengdu 610065，China;2. Natural Gas Dcparmzcnt of PctroChina Tarim Oilficld Company, Korla 841000，China;3. College of Polymer Scicnec and Engineering, Sicchuan University, Chengdu 610065，China

Received:2007-12-05 Revised:1900-01-01 Online:2008-05-25 Published:2008-05-25

Abstract

Abstract:

Via the numerical simulation coupled with experimental measurements, high-density polyethylene(PE-HD)and polypropylene(PP)were melt-blended in the following percentages of E-HD by weight:0，25，50，75，100 and injected in the injection molding. Under some assumptions,the temperature profiles arc numerically solved through the mathematical software package Matlab. The relationship between the percentages of PE-HD by weight and the values of the thermodynamic parametern is also concluded in the article. The model was tested by measuring the temperature profiles in a slab mold instrumented with a thermocouple. Measurements of temperature profiles show good agreement with the numerical prediction during the liquid cooling stage as well as the phase change process, where-as the theoretical values arc a bit larger than the experimental ones.

Key words: high density polyethylene, polypropylene, blend, injection molding, cooling, temperature profile

YIN Hai一ying, BAI Yu, YANG Ming-bo, XU Peng-fei, FU Xiao-rong. Temperature Profile of PE-HD/PP Blends during the Cooling Stage in Inj ection Molding[J]. China Plastics, 2008, 22(05): 53-58 .

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Temperature Profile of PE-HD/PP Blends during the Cooling Stage in Inj ection Molding

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