Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 81, Issue -, Pages 17-23Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2013.03.018
Keywords
Polymers; Hybrid composites; Thermal properties; X-ray diffraction
Categories
Funding
- National Natural Science Foundation of China [51003123]
- Natural Science Foundation of Guangdong Province, China [10451065004004230]
- Zhujiang Science & Technology New-star Program of Guangzhou, China [1217000264]
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Microencapsulated ammonium polyphosphate (EPAPP) with shell of epoxy resin (EP) is prepared by in situ polymerization. EP is hydrophobic, so EPAPP has better water resistance and compatibility in polypropylene (PP) composite compared with ammonium polyphosphate (APP). Due to the reaction between APP and EP under heating, EPAPP can form a residue char with good thermal stability which prevents underlying materials from further destruction during a fire. Because of the interaction and alignment of the PP polymer chains at the surface of additives, microencapsulation affects the crystal structure and spherulitic morphology of PP composite remarkably. PP/EPAPP did not show characteristic peaks for beta-form crystal, while APP could act as an effective beta-nucleating agent in PP. (C) 2013 Elsevier Ltd. All rights reserved.
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