耐高寒玻纤增强尼龙的制备及性能研究

发布时间：2018-01-14 10:04

本文关键词：耐高寒玻纤增强尼龙的制备及性能研究　出处：《塑料工业》2017年01期 　论文类型：期刊论文

【摘要】：以尼龙66(PA66)为基体树脂、玻璃纤维为增强体,选用马来酸酐接枝聚烯烃弹性体(POE-g-MAH)为增韧剂并添加适宜复合添加剂,通过熔融共混的方法制备了一系列高强增韧尼龙材料。研究了增韧剂添加量及复合添加剂对材料力学性能的影响,并对其在常温、低温及高寒条件下的性能进行研究,结合扫描电子显微镜(SEM)对复合材料的微观形貌进行表征。结果表明,随着增韧剂添加量的增加,材料的拉伸强度、弯曲强度和无缺口冲击强度逐渐降低,缺口冲击强度逐渐增加,当增韧剂添加量为6份时材料的综合力学性能最优;在低温处理时材料的性能变化主要发生在开始处理的2 h内,且随着低温处理时间的延长以及温度的降低,材料的缺口冲击强度均逐渐降低、无缺口冲击强度均逐渐增加,且适宜复合添加剂的加入会改善材料的热稳定性以及玻璃纤维与基体树脂之间的界面结合性。综上所述:增韧剂添加量为6份,选用适宜复合添加剂制备材料中的玻纤与基体树脂结合性更好,材料力学性能及耐高寒性能最优。
[Abstract]:The maleic anhydride grafted polyolefin elastomer (POE-g-MAH) was used as the toughening agent and the suitable composite additive was added. A series of high strength toughened nylon materials were prepared by melt blending. The effects of the amount of toughening agent and the compound additives on the mechanical properties of the materials were studied, and the mechanical properties of the composites were studied at room temperature. The properties of the composites were studied under low temperature and cold conditions. The microstructure of the composites was characterized by scanning electron microscope (SEM). The results showed that the tensile strength of the composites increased with the increase of the amount of toughening agent. The bending strength and notched impact strength decreased gradually, and the notched impact strength gradually increased. When the content of toughening agent was 6 phr, the comprehensive mechanical properties of the material were the best. At low temperature treatment, the properties of the material mainly change within 2 hours of the initial treatment, and with the prolongation of the low temperature treatment time and the decrease of temperature, the notched impact strength of the material gradually decreased. The notched impact strength increased gradually, and the addition of suitable composite additives could improve the thermal stability of the material and the interfacial bonding between glass fiber and matrix resin. To sum up, the amount of toughening agent was 6 phr. The combination of glass fiber and matrix resin is better, and the mechanical properties and cold resistance of materials are the best.
【作者单位】：株洲时代新材料科技股份有限公司;
【分类号】：TQ323.6;TB332
【正文快照】： 聚酰胺(PA)因具有化学稳定性好、机械性能良好、电绝缘性能优越、密度小、易加工成型等优点,被广泛应用于汽车、电子电器、机械仪器仪表、建筑等行业[1]。但同时其也存在吸水性大、尺寸稳定性差等缺点,使其应用范围受到一定的限制[2],为弥补上述缺点,同时改善其应用性能,研究

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