期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 114, 期 2, 页码 581-587出版社
SPRINGER
DOI: 10.1007/s10973-013-3011-9
关键词
LDPE; Zeolite; Synergistic effect; Intumescent flame-retardant
资金
- Science Fund of Anhui Education Department [KJ2012A074]
- Anhui University of Science and Technology [2010YB009]
- National Natural Science Foundation of China [21001003]
A char forming agent and silica-gel microencapsulated APP were selected to form novel intumescent flame-retardant system (IFR) to prepare flame-retardant low-density polyethylene (LDPE) composites, and then the influence of zeolites on the thermal and flame-retardant properties of flame-retardant LDPE composites were studied. With the addition of 1 wt% zeolites to LDPE/IFR system, the LOI value increases from 29.0 to 34.0 %. The results of cone calorimetry show that the heat release rate peak and total heat release of the intumescent flame-retardant LDPE composite with 1 wt% zeolites decreases remarkably compared with that of without zeolites. The scanning electron microscopy indicates zeolites with suitable content can improve the quality of the char layer of flame-retardant LDPE composite which is more coherent and dense. The zeolites with the appropriate content can remarkably improve the flame-retardant properties of the LDPE composites.
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