Journal
POLYMERS FOR ADVANCED TECHNOLOGIES
Volume 26, Issue 11, Pages 1312-1319Publisher
WILEY
DOI: 10.1002/pat.3546
Keywords
rapid heat cycle molding; microstructure; beta-crystal; mold-heating temperature
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Funding
- National Natural Science Foundation of China [51205357, 51375451]
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Performance of the rapid heat cycle-molded products is highly correlated to its multilayer structure and crystal form in the multilayers. In this study, isotactic polypropylene was introduced in molding experiments, multi-sites sampling was carried out, and -crystal contents together with multilayer structure were characterized by scanning electron microscopy and X-ray diffraction. It is shown that the distribution of -crystal is significantly relevant to the multilayer structure. Meanwhile, a higher mold-heating temperature would benefit the formation of -crystal, the content of which is mainly dependent on mold temperature and filling distance. Copyright (c) 2015 John Wiley & Sons, Ltd.
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