摘要
采用一种含硅阻燃剂——笼形八苯基硅倍半氧烷(OPS)与含磷阻燃剂聚磷酸铵(APP)或二乙基次膦酸铝(ADP)复配制备了阻燃热塑性聚氨酯弹性体(TPU)。结果表明,OPS对TPU的热稳定性有一定的影响,当OPS的质量分数为15%时,能明显改善燃烧过程中的熔滴现象; OPS/APP和OPS/ADP复合阻燃体系,均可以大幅提升TPU的阻燃性能,且APP效果要明显优于ADP; TPU/10%OPS/5%APP体系的综合性能最优,热释放速率峰值从1339 k W/m2降低至489k W/m^2,降幅达到了63.5%,总烟释放量也从3425 m^2/m^2降到1884 m^2/m^2,降幅达到了45.0%;燃烧残余量为18%,锥量测试后的炭层更加致密、坚硬。
The silicon-based flame retardants,polyhedral oligomeric silsesquioxane (OPS),were added to polyurethane elastomer.And it is found that OPS has some influence on the thermal stability of polyurethane elastomer (TPU),and when the mass fraction of OPS is 15%,it can significantly decrease the phenomenon of molten drops in the process of combustion.Then OPS is mixed with ammonium polyphosphate (APP)and diethyl phosphonic acid aluminum (ADP)respectively,the flame retardancy of TPU/OPS/APP and TPU/OPS/ADP composite can be improved dramatically.APP is significantly superior to ADP.The comprehensive performance of TPU/10%OPS/5%APP system is the best,while the peak of heat release rate is reduced from 1339kW/m^2 to 489 kW/m^2,the reducing range amounts to 63.5%,and the total smoke emission is reduced from 3425m^2/m^2 to 1884 m^2/m^2,the reducing range amounts to 45.0%,and the residual mass is 18%.The carbon layer of the TPU/OPS/ APP system after cone test is more dense and hard.
作者
周陆陆
杜建新
杨荣杰
Lulu Zhou;Jianxin Du;Rongjie Yang(School of Materials,National Engineering Research Center of Flame Retardant Material,Beijing Institute of Technology,Beijing 100081,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2018年第11期79-85,共7页
Polymer Materials Science & Engineering
关键词
聚氨酯弹性体
笼形八苯基硅倍半氧烷
聚磷酸铵
二乙基次膦酸铝
polyurethane elastomer
polyhedral oligomeric silsesquioxane
ammonium polyphosphate
diethyl phosphonie acid aluminum
