研究了10%（质量分数,下同）间苯二酚双（二苯基磷酸酯）（RDP）阻燃聚碳酸酯（PC）/聚对苯二甲酸丁二醇酯（PBT）合金的增韧方法。5%苯乙烯-丁二烯-甲基丙烯酸酯（MBS）、3%乙烯-甲基丙烯酸丁酯-丙烯酸缩水甘油酯共聚物（PTW）复合增韧基体质量比70∶30的合金,缺口冲击强度达44.5 kJ/m2,拉伸强度达53.8 MPa,3.2 mm厚样条UL-94测试为V-0级。热重分析表明,RDP使上述合金第一失重段残炭率增加17.6%,700℃残炭率增加4.1%。聚苯醚（PPO）代替10%的合金基体后1.6 mm厚的样条阻燃等级达UL-94 V-1级,垂直燃烧残炭扫描电镜照片显示炭层表面结构致密。
The improvement in thoughness of polycarbonate（PC）/polybutylene terephthalate（PBT） alloy flame-retarded by10% bis（diphenyl phosphate）（RDP） was studied.with 5% styrene-butylene-methacrylate（MBS） and 3% ethylene-butylacrylate-glycidyl methacrylate（PTW） as toughener in PC/PBT alloy（mass ratio of 70∶30）,the izod impact strength was 44.5 kJ/m2,tensile strength was 53.8 MPa and alloy（3.2mm thick） passed UL-94 V-0 test.Thermogravimetry analysis shows that residual mass of the alloy is 17.6% higher than that of the RDP-free one in the first mass-loss step,while 4.1% higher at 700 ℃.When 10% polyphenylene oxide（PPO） was employed in PC/PBT/RDP system,alloy specimens with 1.6 mm thickness passed UL-94 V-1 test.Scanning electron microscopy morphologies showed a dense residual char on the surface of vertically burned sample.
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