新型可瓷化膨胀防火涂料的制备及性能研究  

Preparation and properties of new ceramifiable intumescent fire protection coatings

作　　者：洪建婷 安彤 陈泽超 刘立起 彭雨晴 李爱军[1] 徐梦欣 王金合 HONG Jianting;AN Tong;CHEN Zechao;LIU Liqi;PENG Yuqing;LI Aijun;XU Mengxin;WANG Jinhe(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;College of Sciences,Shanghai University,Shanghai 200444,China;Qingdao Gaoxin Chengwei Industry Co.,Ltd.,Qingdao 266000,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]上海大学理学院,上海200444 [3]青岛高新城维实业有限公司,山东青岛266000

出　　处：《绝缘材料》2024年第11期79-86,共8页Insulating Materials

基　　金：云南省新材料重大专项(202302AB080022)。

摘　　要：以环氧树脂为基体,聚磷酸铵为阻燃剂、硼酸锌为助熔剂、生蛭石粉和硅灰石为耐火填料,制备了一种新型可瓷化膨胀防火涂料。采用扫描电子显微镜(SEM)、耐火性能测试等方法研究4种填料复配对可瓷化膨胀防火涂料性能的影响。结果表明:聚磷酸铵可以显著提高涂层的膨胀倍率和隔热性能,硼酸锌能有效增加炭层的强度和致密度,在高温下生蛭石粉和硅灰石提升了炭层的耐烧性能并增加了耐火时限;当聚磷酸铵、生蛭石、硼酸锌、硅灰石的质量比为11∶5∶6∶10时,样品的拉伸剪切强度为7.8 MPa,耐火性能最好,耐火时限达到了10 min,最高背板温度为393℃,燃烧后的炭层可耐1.0 kV电压。A new type of ceramifiable intumescent fire protection coating was prepared by using epoxy resin as the matrix,ammonium polyphosphate as the flame retardant,zinc borate as the flux,and raw vermiculite powder and wollastonite as the refractory fillers.The effects of the compound of four fillers on the properties of ceramifiable intumescent fire protection coating were studied by scanning electron microscope(SEM)and fire resistance test.The results show that ammonium polyphosphate can significantly improve the expansion multiplication rate and thermal insulation performance,zinc borate can effectively enhance the strength and density of the charcoal layer,and raw vermiculite powder and wollastonite can enhance the burn-resistant performance of the charcoal layer and increase the fire resistance time limit at high temperature.When the mass ratio of ammonium polyphosphate,raw vermiculite,zinc borate,and wollastonite is 11∶5∶6∶10,the tensile shear strength is 7.8 MPa,the refractory performance is the best,the fire resistance time limit reaches 10 min,the maximum backsheet temperature is 393℃,and the charcoal layer after burning can withstand a voltage of 1.0 kV.

关 键 词：可瓷化 膨胀 防火涂料 

分 类 号：TM215[一般工业技术—材料科学与工程]