Surface Sedimentation and Adherence of Nano-SiO2 to Improve Thermal Stability and Flame Resistance of Melamine-Formaldehyde Foam via Sol-Gel Method
Melamine-formaldehyde foam (MF) possesses intrinsic flame retardance, however, relative poor thermal stability and a certain amount of heat release rate restrict its applications in heated environment to a degree.In the present research, sol-gel method has been adopted to precipitate nano-SiO2 particles on the surface of the melamine-formaldehyde foams fibers to construct a protective inorganic gel layer.Taking advantages of the shielding effects of the gel layer, the thermal-oxygen degradation of the foam can be greatly retarded during heating, hence the thermal stability is remarkably improved, and the flame retardance is further enhanced.In addition, introducing a small amount of membrane-forming agent in the sol-gel system can make the depositional nano-SiO2 particles well adhered to avoid dusting.
Yuan Liu Ning Wang Li liu Qi Wang
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
国际会议
杭州
英文
17-20
2018-06-14（万方平台首次上网日期，不代表论文的发表时间）