摘要
采用磷酸、P2O5、季戊四醇、三聚氰胺为原料合成季戊四醇磷酸酯蜜胺盐阻燃剂.根据该阻燃剂的膨胀度、剩炭率及吸水率,确定最优合成条件为:n(聚磷酸)∶n(季戊四醇)∶n(三聚氰胺)=3∶1∶1;中间产品的合成温度100℃,合成时间120 min;固化温度200℃,固化时间120min.阻燃剂各组分物质的量比为3∶1∶1时的膨胀体系效果最好,其膨胀率为121.5 cm3/g,剩炭率63.6%,吸水率5.5%.该阻燃剂应用于聚乙烯中,以氧指数法、水平燃烧法考察了聚乙烯膨胀阻燃体系的阻燃性能.结果表明,膨胀度、剩炭率可以反映膨胀型阻燃剂在聚乙烯中的阻燃效果.以m(阻燃剂)∶m(聚乙烯)=30∶70混合,可使复合材料达到水平阻燃级别FH-1,氧指数29,自熄时间30 s,具有良好的阻燃效果.
The intumescent flame retardant named pentaerythritol bisphosphorate melamine salt was synthesized from H3PO4, P2O3, pentaerythritol and melamine. The optimum synthetic condition obtained based on intumescent degree, char residual and water adsorption was as follows; n（PPA） ： n（PT）; n（M）= 3 ： 1： 1, synthetic temperature of the intermediate product was 100 ℃ , synthetic time was 120 min, curing temperature was 200 ℃ and curing time was 120 min. When the composition of flame retardant is 3 ： 1 ： 1,it has optimal effect-the intumescent degree is 121. 5 cm^3/g, the char residual is 63. 6% and the water adsorption is 5. 5 %. Finally, the product was applied in polyethylene. The flame retardancy of PE/IFR composites was investigated by the limiting oxygen index （LOI） and horizontal burning test. The test results showed that intumescent degree and char residual could reflect the flame retardancy of IFR in PE. The IFR formulation of 3 ： 1 ： 1 mixed with PE in 30 ： 70 made the composites achieve a LOI value of 29, FH-1 and the extinguishing time of 30 s, which is a good flame retardaney level.
出处
《江南大学学报（自然科学版）》
CAS
2006年第3期341-344,348,共5页
Joural of Jiangnan University (Natural Science Edition)
基金
国家自然科学基金项目(20571033)
关键词
无卤阻燃
磷酸酯
膨胀型阻燃剂
合成
聚乙烯
halogen-free flame retardancy
phosphate
intumescent flame retardant
preparation
polyethylene （PE）
