摘要
以二乙基次膦酸铝(ADP)为主阻燃剂,三聚氰胺聚磷酸盐(MPP)、三聚氰胺氰尿酸盐(MCA)为协效阻燃剂用于玻璃纤维增强聚酰胺6复合材料(PA6/GF)的阻燃改性。研究结果表明:与MCA相比,MPP与ADP的复配能发挥更好的协效阻燃作用,其中当总阻燃剂的添加量为10%(如无特殊说明,均为质量分数)、ADP与MPP复配的质量比为8∶1时,PA6/GF/ADP∶MPP(8∶1)阻燃复合材料垂直燃烧等级能够通过UL-94 V-1级,极限氧指数值(LOI)达到29.7%。与PA6/GF/ADP复合材料相比,PA6/GF/ADP∶MPP(8∶1)阻燃复合材料的热释放速率峰值(pk-HRR)和总热释放量(THR)分别降低至307.6 kW/m^(2)和154.6 MJ/m^(2),分别下降了3.6%和6.4%,且锥形量热测试的残炭量高达40.6%,这表明MPP能够提升阻燃体系在凝聚相中的阻燃效果。此外,MPP的引入有利于提升复合材料的拉伸强度,与PA6/GF/ADP复合材料相比,PA6/GF/ADP∶MPP(8∶1)的拉伸强度提升了17.6%。
In this work,aluminum diethylphosphonate(ADP),in company with melamine polyphosphate(MPP)or melamine cyanurate(MCA),was used to flame retard glass fiber reinforced polyamide 6 composites(PA6/GF).The research results showed that compared with MCA,the combination of MPP and ADP can play a better synergistic and flame retardant effect.When the total amount of flame retardant was 10wt%and the mass ratio of ADP and MPP was 8∶1,the limiting oxygen index(LOI)value of PA6/GF/ADP∶MPP(8∶1)composite was 29.7%,while the vertical combustion grade reached UL-94 V-1 rating.Compared with PA6/GF/ADP composites,the peak heat release rate(pk-HRR)and total heat release capacity(THR)of PA6/GF/ADP∶MPP(8∶1)composite decreased to 307.6 kW/m^(2)and 154.6 MJ/m^(2),respectively.Mean-while,the carbon residue of the composite in cone calorimetry test was as high as 40.6%,which indicated that MPP can improve the flame retardant effect of the flame retardant system in the condensed phase.In addition,the introduction of MPP was beneficial to improve the tensile strength of the composites.Compared with PA6/GF/ADP composites,the tensile strength of PA6/GF/ADP∶MPP(8∶1)increased by 17.6%.
作者
何德健
王振华
刘保英
房晓敏
徐元清
丁涛
HE Dejian;WANG Zhenhua;LIU Baoying;FANG Xiaomin;XU Yuanqing;DING Tao(College of Chemistry and Molecular Sciences,Henan University,Kaifeng 475004,Henan,China;Henan Engineering Research Center of Functional Materials and Catalytic Reaction,Kaifeng 475004,Henan,China)
出处
《材料导报》
北大核心
2025年第6期273-280,共8页
Materials Reports
基金
河南省科技攻关项目(232102230036)
河南省博士后科研资助项目(J23029Y)。
