摘要
将二乙基次磷酸铝(ADP)和聚酰胺(PA)6通过双螺杆挤出机熔融共混,制备了PA 6/ADP复合材料。利用差示扫描量热仪、垂直燃烧测定仪、极限氧指数仪、锥形量热仪等研究了PA 6/ADP复合材料的热性能、力学性能和燃烧性能。结果表明:ADP的加入提高了PA 6/ADP复合材料的玻璃化转变温度;ADP使PA 6的力学性能轻微下降;当w(ADP)为22%时,可使PA 6的极限氧指数从26.7%提高到33.5%,垂直燃烧等级(试样厚1.6 mm)可以从V-2级达到V-0级,且无熔融滴落现象;热释放速率峰值从1 200 k W/m^2降到500 k W/m^2;燃烧后的复合材料产生致密的炭层,可很好地阻隔辐射热和氧气向PA 6基体的传递。
Diethyl-phosphate aluminum（ADP） was mixed with polyamide6（PA6） by the twin screw extruder to prepare PA6/ADP composites. The thermal and mechanical properties of PA6/ADP composites as well as flammability are characterized by differential scanning calorimeter,UL-94 burning rating, limiting oxygen index （LOI） and cone calorimeter test respectively. The results show that the addition of ADP helps to improve the glass transition temperature of the composites; while the mechanical properties of PA6 drops slightly; the LOI value of PA6 achieves33.5% when ADP is22 wt% compared with that of26.7% of pure PA6, and UL-94 （1.6 mm） can reach V-0 rating without melting and dripping. The peak heat release rate （PHRR） decreases from1200 kW/m2 to500 kW/m2 in the22 wt% ADP loading. The composite produces dense char residue after burning, which can prevent the heat and oxygen from transferring to PA6 matrix.
出处
《合成树脂及塑料》
CAS
北大核心
2016年第4期24-28,共5页
China Synthetic Resin and Plastics
基金
国家自然科学基金
青年基金项目(No.51303011)
关键词
聚酰胺6
阻燃性能
二乙基次磷酸铝
垂直燃烧
polyamide 6
flame retardance
diethyl-phosphate aluminum
vertical flame test
