作　　者： (张文龙）; (李月）; (金姗姗）; (史培建）; (戴亚杰）;

机构地区： 哈尔滨理工大学材料科学与工程学院,黑龙江哈尔滨150040 哈尔滨理工大学工程电介质及其应用教育部重点实验室,黑龙江哈尔滨150080

出　　处： 《中国塑料》 2017年第8期30-34,共5页

摘　　要： 将以改性季戊四醇(MPER)为成炭剂的膨胀型阻燃剂(IFR)与乙烯-醋酸乙烯共聚物(EVA)通过熔融共混法制得了辐照交联聚烯烃复合材料,通过极限氧指数仪、高阻计、击穿测试仪和热失重分析仪研究了复合材料的阻燃性能、电性能及热稳定性。结果表明,MPER代替季戊四醇(PER)作为聚烯烃体系的成炭剂后,阻燃剂总添加量为40%、辐照剂量小于90kGy时,与辐照前相比EVA/IFR-MPER体系的阻燃性能、击穿场强、体积电阻率、最大分解温度、600℃时残炭率分别提高了1.5%、2.2 MV/m、0.6×10^(13)Ω·m、4.43℃、8.52%。 rradiation-crosslinked polyolefin composites were prepared by ethylene-vinyl acetate copolymerwith intumescent flame retardant （ IFR ） of modified pentaerythritol as char-forming agent through melt blending, and their flame retardant performance, electrical properties and thermal stability were investigated by limiting oxygen index, high resistance meter, breakdowntester and thermogravimetic analysis. The results indicated that , when 40 wt % of the complex flame retardants was introduced and the rradiation dose was less than 90 kGy , the resulting EVA/ IFR-MPER systems achieved an improvement in flame retardancy by 1. 5 %. Furthermore , their breakdown field strength , volume resistivity , maximum decomposition temperature and carbon yield at 600 C increased by 2. 2 MV/m, 0. 6×1013 Ω·m, 4. 43℃ and 8. 52 % , respectively.

关 键 词： 改性季戊四醇 乙烯 醋酸乙烯共聚物 辐照 阻燃