硅烷偶联剂改性茶皂素膨胀阻燃剂及涂料应用  

Silane Coupling Agent Modified Tea Saponin Intumescent Flame Retardants and Its Application in Coatings

作　　者：李湘洲[1,2] 钱伟[1] 吴志平[1] 李文生[1,3] 房丛丛[4] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]南方林业生态应用技术国家工程实验室,湖南长沙410004 [3]湖南大学化学化工学院,湖南长沙410082 [4]中南林业科技大学商学院,湖南长沙410004

出　　处：《湖南大学学报（自然科学版）》2014年第2期119-124,共6页Journal of Hunan University:Natural Sciences

基　　金：国家'十一五'科技支撑计划项目(2009BADB1B0303);广东省教育部产学研结合项目(2011B090400333);湖南省研究生科研创新基金资助项目(CX2012B324);中南林业科技大学研究生科技创新基金资助项目(2010sx05)

摘　　要：采用硅烷偶联剂(KH-550)对茶皂素复合型膨胀阻燃剂(CTS-IFR)进行改性处理,并应用于阻燃涂料.考察了硅烷偶联剂改性茶皂素膨胀阻燃剂(SMTS-IFR)的制备工艺,采用FTIR和SEM对改性阻燃剂进行了结构表征,采用同步热分析仪测试了其热解性能,并对含该改性阻燃剂的阻燃涂料(SMTS-IFRC)进行了阻燃性能及燃烧性能分析.结果表明:硅烷偶联剂改性阻燃剂制备的适宜条件为改性温度80℃,反应时间4h,硅烷偶联剂用量2.5%(质量分数);所制改性阻燃剂中硅烷偶联剂与阻燃剂被证实发生了反应,形成了良好包覆,分散均匀,具有良好的热稳定性,且其高温残炭量明显增加;锥形量热试验结果表明,含该改性阻燃剂的阻燃涂料具有良好的耐火性能,且改性阻燃剂涂料试样燃烧过程中的平均热释放速率为62.29kW/m2,总热释放量为52.66kJ/m2,平均有效燃烧热为11.31kJ/kg,平均质量损失速率为0.046 91g/s,较未改性的阻燃剂涂料,其阻燃性能明显提高.A silane coupling agent （named KH-550） was used to modify composite intumescent {lame retardant containing tea saponin （CTS-IFR）, which was applied in flame retardant coatings. The prepara-tion conditions of the silane coupling agent modified tea saponin flame retardant（SMTS-IFR）were investi-gated. The structure of SMTS-IFR was characterized by FT-IR and SEM, the thermal decomposition properties were performed by simultaneous thermal analyzer, and the flame retardant and combustion per-formanee of coatings containing SMTS-IFR（SMTS-IPRC） were also measured by Cone calorimeter. The results showed that the suitable modification reaction conditions were at the temperature of 80 ℃, the re-action time of 4 h, and the addition of 2.5 % silane coupling agent in tea saponin intumescent flame retard- ant. It showed that the reaction between silane coupling agent and flame retardant system occured, and the flame retardant was cladded and dispersed uniformly. SMTS-IFR had good thermal stability and higher carbon residue at high temperature compared with that of CTS-IFR. Cone calorimeter test showed that coating sample containing SMTS-IFR had a good flame retardant with a heat release rate for an average of 62.29 kW/m^2,a total heat release of 52.66 kJ/m^2,a mean effective heat of combustion of 11.31 kJ/kg, and an average mass loss rate of 0. 046 91 g/sin the combustion process, which was significantly improved compared with the coating containing unmodified flame retardant.

关 键 词：硅烷偶联剂 茶皂素膨胀阻燃剂 改性 热解性能 阻燃涂料 阻燃性能 

分 类 号：TQ175[化学工程—硅酸盐工业]