摘要
将纺丝级聚己内酰胺(PA6)与三聚氰胺以及辐敏剂三烯丙基氰尿酸酯(TAC)共混后造粒压片,再经γ辐射。研究了辐照交联对其阻燃防熔滴性能和热降解行为的影响。结果表明:在12 kGy^100 kGy的辐照剂量范围内,不含TAC的阻燃体系,辐射后氧指数有小幅度的增加,熔滴情况变化不大;含TAC的阻燃体系,随辐照剂量和三聚氰胺用量的增加,氧指数逐渐增加,熔滴情况逐步得到改善直至无熔滴,垂直燃烧性能达UL94V-0级。热重分析表明,辐射后阻燃体系的残炭量较辐射前有明显提高。对燃烧后的炭层形貌观察后发现,辐照后炭层变得结实、致密。
Flammability, dripping performance and thermal stability of polyamide-6 containing melamine were investigated after irradiation cross-linking with and without the presence of triallylcyanurate（TAC）. Irradiation cross-linking and the addition of TAC result in the increase of limiting oxygen index （LOI） and achievement of UL-94 V-0. In the case of no TAC, LOI value changes a little and there are still flame drips before and after irradiation cross-linking. Thermo gravimetric analysis indicates that the amount of non-volatile residue at 600 ℃ increases greatly after irradiation cross-linking. Furthermore the char morphology observation after flame-retardant tests show that a denser and continuous residual char is formed.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2014年第2期7-10,共4页
Polymer Materials Science & Engineering
基金
中央高校基本科研业务费专项资金资助(12D10132)
