摘要： 以硅丙乳液为基料，聚磷酸铵（APP）、季戊四醇（PER）、三聚氰胺（MEL）为阻燃体系，分别以金红石型及锐钛型二氧化钛为阻燃协效剂和抑烟剂，配制膨胀型防火涂料。通过 TGA、大板燃烧试验与建材烟密度仪对其防火性能做了详细表征和分析，并用照片与扫描电镜观察了炭层的宏观与微观形貌。结果表明：金红石型 TiO2 对防火涂料的阻燃性能影响显著，当 APP为 150份、PER为 68份、MEL为 90份、金红石型 TiO2为 30份时，防火涂料的耐火时间达到 73min；锐钛型 TiO2 对防火涂料的抑烟性能影响显著，当添加量为 60份时，烟密度等级（SDR）达到 19.41。
关键词:
硅丙乳液,
阻燃体系,
烟密度,
涂料,
二氧化钛
Abstract: The dilatent fire-retardant coating based on the silicone-acrylate emulsion containing ammonium polyphosphate, pentaerythritol and melamine as fire retardants and anatase -TiO2/rutile -TiO2 as fire retardant promotor and fume prohibitor was developed. Thermo -gravimetric analysis(TGA), building materials smoke densitometer and vertical buming test were used to analyze the flame retardant properties and smoke density. Photos and scanning electron microscope were used to investigate the macro and micro morphorlogy of fire retardant coating expansion layer. The results showed that rutile-TiO2 could significantly improve the fire retardant performance. When ammonium polyphosphate was 150phr, pentaerythritol 68 phr, melamine 90 phr, rutile-TiO2 30 phr, the fire retardant time of coating could be up to 73 min. Anatase-TiO2 could significantly reduce the smoke density, when anatase TiO2 was 60 phr, SDR could be down to 19. 41.
Key words:
silicone-acrylate emulsion,
flame-retardant system;smoke density,
coating,
TiO2
扈中武１, 王华进２, 谷晓昱１, 李志士２, 孙 军１, 张 胜１. 二氧化钛对硅丙乳液防火涂料阻燃抑烟性能的影响[J]. 涂料工业, 2013, 43(7): 38-42.
Hu Zhongwu, Wang Huajin, Gu Xiaoyu, Li Zhishi, Sun Jun, Zhang Sheng. The Effect of TiO2 on Fire Retardance and Fume Prohibition of Silicone-acrylate Emulsion Coating[J]. Paint & Coatings Industry, 2013, 43(7): 38-42.