摘要
采用热失重分析仪、微型量热仪及扫描电镜研究了单宁(Tannin)与聚磷酸铵(APP)复配体系对聚丁二酸丁二酯(PBS)的催化成炭作用以及炭层对其燃烧行为的影响。热失重分析表明,无论在空气还是氮气下,APP与Tannin复配使用都可以催化PBS体系成炭。当APP与Tannin的质量比为3∶1时,在空气中PBS体系700℃时残炭的实验值为9.3%,在氮气中残炭的实验值为11.3%,都远远高于理论计算值。微型量热仪分析显示,炭层可以作为基体与火焰之间的屏障,尤其当APP与Tannin的比例为5∶1时,PHRR降低了33%。此外,残炭形貌分析表明,APP和Tannin复配使用后,材料表面形成较为均匀、致密的炭层结构。
The catalytic charing effect of combination of ammonium polyphosphate(APP)and tannin and its influence on flammability of poly(butylene succinate)(PBS)were investigated by thermogravimetric analysis(TG),microscale combustion calorimeter(MCC)and scanning electron microscopy(SEM).TG analyses show that combination of APP and tannin could catalyze char formation of PBS system whether in nitrogen or air atmosphere.When the mas ratio of APP and tannin is 3∶1,the experiment mass of char residue at 700℃is 9.3%in air and is 11.3%in N2,which are much larger than the calculated values.MCC indicates that the char could be acted as a barrier to isolate the material from flame.Especially when the mass ratio of APP and tannin is 5∶1,the peak heat release rate(PHRR)could be reduced by 33%.The morphology examined by SEM reveals that the char residue of PBS/APP/tannin is uniform and compact when the combination of APP and tannin is added.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2014年第11期107-111,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(51203137)
关键词
聚丁二酸丁二酯
聚磷酸铵
单宁
成炭
阻燃
poly(butylene succinate)
ammonium polyphosphate
tannin
catalytic charring
flame retardance
