期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 136, 期 2, 页码 601-608出版社
SPRINGER
DOI: 10.1007/s10973-018-7669-x
关键词
Ethylene-vinyl acetate; Brucite; Carbon black; Flame retardant; Synergy
资金
- Science and Technology of Qinghai Program [2015-HZ-812]
- Natural Science Foundation of China [U1607104]
- Thousand Talents Plan of Qinghai Province
Nanocarbon black (CB) was introduced into ethylene-vinyl acetate/brucite (EM) composites to investigate the synergistic effect of CB and metal hydroxide on improving the flame retardancy of EVA. Flammability properties of the as-prepared EVA composites were investigated by thermogravimetric analysis, limiting oxygen index (LOI), UL-94 test and cone calorimetry test. The results indicated that the optimum mass ratio of CB/brucite was 1/54, at which the EVA composites displayed dramatic improvement on thermal stability and flame retardancy. The LOI value was as high as 35.3%, the UL-94 passed the V-0 rating, and the peak heat release rate reduced 79% in comparison with pure EVA. Based on the morphology and structure analysis for residue chars, the flame-retardant mechanism was attributed mainly to the positive synergistic effect of CB and brucite on promoting the formation of better carbon protective layer during combustion.
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