摘要
通过引入酚醛树脂(PF)来改善玻纤(GF)增强聚酰胺66(PA66)的耐湿性能和耐次氯酸钠性能,制备了PA66/GF/PF复合材料。系统研究了PF含量对PA66/GF/PF复合材料力学性能、耐湿性能、耐次氯酸钠性能、熔体流动速率、结晶和熔融行为的影响。结果表明,PF可以提高复合材料的力学性能,当PF质量分数为15%时,复合材料的拉伸强度、弯曲强度和弯曲弹性模量分别为190,286,11000 MPa,与不加PF时相比,分别上升了18.0%,17.2%和25.0%。PF可以提高复合材料的耐湿性能,当PF质量分数为20%时,复合材料的吸水率从2.0%下降至0.77%。PF还可以显著提高复合材料的耐次氯酸钠性能,当PF质量分数为20%时,即使经过次氯酸钠溶液处理2周,复合材料表面依然没有明显的腐蚀。此外,PF有效提高复合材料的流动性,并降低其熔融温度和结晶温度。
Phenolic resin(PF)was introduced to improve the moisture resistance and sodium hypochlorite resistance of glass fiber(GF)reinforced polyamide 66(PA66),and PA66/GF/PF composites were prepared.The effects of PF content on mechanical property,moisture resistance,sodium hypochlorite resistance,melt flow rate,crystallization and melting behavior of PA66/GF/PF composites were systematically studied.The results show that PF can improve the mechanical properties of the composites.When the PF mass fraction is 15%,the tensile strength,flexural strength and flexural elastic modulus of the composites are 190,286,11000 MPa,which are increased by 18.0%,17.2%and 25.0%,respectively,compared with that without PF.PF can improve the moisture resistance of the composites.When PF mass fraction is 20%,the water absorption of the composites decreases from 2.0%to 0.77%.PF can also significantly enhance sodium hypochlorite resistance of PA66/GF/PF,when the mass fraction of PF is 20%,the surface of PA66/GF/PF still has no obvious corrosion,even after 2 weeks of sodium hypochlorite solution treatment.In addition,PF increases the fluidity of PA66/GF/PF and decreases its melting temperature and crystallization temperature.
作者
丁超
张亚军
郑一泉
王丰
Ding Chao;Zhang Yajun;Zheng Yiquan;Wang Feng(Kingfa Science&Technology Co.,Ltd.,Guangzhou 510663,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第6期21-26,共6页
Engineering Plastics Application
关键词
玻纤增强聚酰胺
酚醛树脂
耐次氯酸钠
耐湿性能
glass fiber reinforced polyamide
phenolic resin
sodium hypochlorite resistance
moisture resistance
