摘要
选用聚酰胺(PA6)、丙烯腈-丁二烯-苯乙烯共聚物(ABS)高胶粉和相容剂,制备了PA6/ABS合金材料。研究了ABS用量对PA6/ABS合金材料加工性能和力学性能的影响。结果表明,ABS含量不同,挤出状态不同;ABS含量越高材料的流动性越差;随着ABS含量的降低,材料的拉伸强度依次升高,悬臂梁冲击强度和热变形温度呈不同的变化规律。选择PA6∶ABS=70∶25配方,对比不同抗氧剂时带色材料经热氧老化后颜色的变化及色粉含量增加后颜色的变化。结果表明,受阻酚类抗氧剂(1010)和硫醚类抗氧剂(DLTP)的复合抗氧体系和抗氧剂H10对抑制PA6/ABS合金材料热氧老化后的颜色黄变有很好的作用;通过添加钛白粉来增加色粉的含量可以明显降低材料经热氧老化后的颜色变化率,1010和DLTP的复合抗氧体系较抗氧剂H161能更好地抑制PA6/ABS合金材料热氧老化后C—N键的断裂和生色基团羰基的产生。研制的灰色PA6/ABS合金材料已应用于汽车儿童座椅配件。
The nylon 6/acrylonitrile-butadiene-styrene copolymer （PA6/ABS） alloy was prepared with PA6, ABS high rubber powder and a compatibilizer. The effects of the ABS dosage on the processing and mechanical properties of PA6/ABS alloy were studied. The results show that： when the ABS content is different, extrusion state is different. The higher the ABS content, the worse the fluidity of the material. With the decrease of the ABS content, the tensile strength increases, the izod impact strength and the heat distortion temperature of the material show different changes. Selecting the ratio of PA6 to ABS of 70 ： 25, the color changes of the coloring materials was contrasted after thermal oxidative aging with those of different antioxidants and the color changes after increasing the toner content. The results show that： the complex of hindered phenol antioxidant 1010 and thioether-type antioxidant of DLTP and the antioxidant H10 have a good role on the inhibition of yellowing of PA6/ABS alloy after hot oxygen aging. By adding titanium dioxide to increase the content of toner can significantly reduce the color change rate after thermal oxygen aging, the composite antioxidant system of antioxidant 1010 and DLTP can inhibit the breaking of C--N bond and the carbonyl production of PA6/ABS alloy after thermal oxidative aging compared with the antioxidant H161. The developed gray PA6/ABS alloy was used in automotive child seat accessories.
出处
《塑料工业》
CSCD
北大核心
2017年第5期133-137,共5页
China Plastics Industry
关键词
聚酰胺6
丙烯腈-丁二烯-苯乙烯高胶粉
热氧老化
抗氧剂
颜色
Nylon 6
Acrylonitrile-Butadiene-Styrene High Rubber Powder
Thermal Oxidative Aging
Antioxidant
Colour
