详细介绍: 纺机/经编机配件精密齿轮传动齿轮耐磨齿轮等机械设备传动件加工定做
          料之一,它是半结晶材料,具有非常好的化学稳定性、力学强度、电绝缘性和热稳定性,由吸湿引起的电性能变化很小,绝缘电压很高,且成型稳定性和尺寸精度优良。纯PBT的拉伸强度为50MPa,而GF增强PBT的拉伸强度可达170MPa。汽车上应用的PBT主要有GF增强型(GF的质量分数为10%~50%)、玻璃微球增强型、阻燃型和低翘曲型4种。也可采用无机填料或与其它聚合物共混改性。这类改性PBT被广泛用于保险杠、化油器组件、挡泥板、扰流板、火花塞子板、    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,可制得LOI达24.4%,垂直燃烧等级达UL94V–0级的无卤阻燃ABS;丁腈橡胶质量分数为8%时,阻燃体系垂直燃烧等级达UL94V–0级,拉伸强度为30.8MPa,缺口冲击强度达11.4kJ/m2。ABS/PET共混物泉州师范学院采用醇化聚对苯二甲酸乙二酯和乙烯–正丁基丙烯酸酯–甲基丙烯酸缩水甘油酯共聚物对聚对苯二甲酸乙二酯(PET)进行改性,再与ABS共混,发现采用改性PET可使ABS/PET共混物的拉伸强度、弯曲强度和缺口冲击强度分别提高10.8%,13.3%      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纺机/经编机配件精密齿轮传动齿轮耐磨齿轮等机械设备传动件加工定做,可制得LOI达24.4%,垂直燃烧等级达UL94V–0级的无卤阻燃ABS;丁腈橡胶质量分数为8%时,阻燃体系垂直燃烧等级达UL94V–0级,拉伸强度为30.8MPa,缺口冲击强度达11.4kJ/m2。ABS/PET共混物泉州师范学院采用醇化聚对苯二甲酸乙二酯和乙烯–正丁基丙烯酸酯–甲基丙烯酸缩水甘油酯共聚物对聚对苯二甲酸乙二酯(PET)进行改性,再与ABS共混,发现采用改性PET可使ABS/PET共混物的拉伸强度、弯曲强度和缺口冲击强度分别提高10.8%,13.3%      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度与拉伸弹性模量分别比纯PBS提高了55%和140%,优于文献报道的几种天然纤维对PBS的增强效果。扩链改性聚(3–羟基丁酸酯-co-4–羟基丁酸酯)中国科学院长春应用化学研究所[66]以多苯基多亚甲基多异氰酸酯(PAPI)为扩链剂,扩链改性聚(3–羟基丁酸酯-co-4–羟基丁酸酯)[P(3HB-co-4HB)]。PAPI的质量份为2.0份时,体系综合性能最佳,其起始分解温度和分解温度分别比纯P(3HB-co-4HB)提高了16.7℃和11.4℃,其拉伸强度和断裂伸长率分别      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纺机/经编机配件精密齿轮传动齿轮耐磨齿轮等机械设备传动件加工定做再增大。抗菌剂在基体树脂中分散均匀。以金黄色葡萄球菌为指标的抗菌性能测试表明,载银抗菌薄膜具有较好的抗菌性。抗菌ABS塑料赵斯梅[78]对载银无机抗菌剂进行表面处理,与ABS混合得到高浓度的抗菌母粒,然后添加到ABS中注塑试样。研究结果表明,变色抑制剂可有效地防止抗菌ABS塑料的变色,提高抗菌性能;经表面处理后的抗菌剂在ABS中分布均匀,无团聚现象,与ABS基体树脂的相容性好;随着抗菌母粒的增加,抗菌ABS塑料的抗菌性能      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究院[55]采用稀土表面改性剂对纳米碳酸钙进行表面改性制备了稀土纳米母粒。考察了稀土纳米母粒含量对PPS加工性能和力学性能的影响。结果表明,随着稀土纳米母粒含量的增加,复合材料的力学性能呈先增加后降低的趋势,其电绝缘性能也得到一定程度的提高。E–MA–GMA增容剂改性PPS/PA66共混体系湖南工业大学[56]研究了E–MA–GMA对PPS/PA66共混体系的相容性、力学性能、热性能、流变性能的影响。结果表明,增容剂的加入,增加了共纺机/经编机配件精密齿轮传动齿轮耐磨齿轮等机械设备传动件加工定做 |