期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 113, 期 2, 页码 865-871出版社
SPRINGER
DOI: 10.1007/s10973-012-2815-3
关键词
Polypropylene; Fire retardant; Cone calorimeter; Microencapsulation; Intumescent
资金
- China Postdoctoral Science Foundation [2012M511913]
- Science Fund of Anhui Education Department [KJ2012A074]
- Scientific and Technological Fund for Selected Projects of Returned Overseas Chinese Professionals
- Anhui University of Science and Technology
Novel intumescent flame retardant polypropylene (PP) composites were prepared based on a char forming agent (CFA) and silica-gel microencapsulated ammonium polyphosphate (Si-MCAPP). The thermal and flame retardancy of flame retardant PP composites were investigated by limiting oxygen index, UL-94 test, cone calorimetry, thermogravimetric analysis, scanning electron micrograph, and water resistance test. The results of cone calorimetry show that the flame retardant properties of PP with 30 wt% novel intumescent flame retardants (CFA/Si-MCAPP = 1:3) improve greatly. The peak heat release rate and total heat release decrease, respectively, from 1,140.0 to 156.8 kW m(-2) and from 96.0 to 29.5 MJ m(-2). The PP composite with CFA/Si-MCAPP = 1:3 has the excellent water resistance, and it can still obtain a UL-94 V-0 rating after 168 h soaking in water.
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