J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (1): 75-81.
Fire-resistant properties of intumescent nano-coating containing nano-SiO2 in salt spray condition(含有纳米二氧化硅的膨胀纳米涂层在盐雾环境中防火性能研究)
王震宇 1;韩恩厚2;刘福春3;柯伟4
- 1. 中国科学院金属研究所
2. 中国科学院金属研究所腐蚀与防护国家重点实验室
3. 金属所
4.
Fire and Corrosion Resistances of Intumescent Nano-coating Containing Nano-SiO2 in Salt Spray Condition
Zhenyu Wang, Enhou Han, Fuchun Liu, Wei Ke
- State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
摘要：
The flame retardant nano-coating with nano-concentrates was prepared in the study. The effect of nano-SiO2 on the corrosion resistance and fire resistance of ammonium polyphosphate-pentaerythritol-melamine (APP-PER-MEL) coating was investigated using differential thermal analysis (DTA), scanning electron microscopy (SEM), effective thermal conductivity (λ/d), X-ray photoelectron spectroscopy (XPS) and fire protection test. The chemical action and endothermic effect of ammonium polyphosphate, pentaerythritol and melamine in traditional flame retardant coating were damaged by salt spray condition, whereas the flame-retardant additives in the nano-coating demonstrated the good chemical interaction in salt spray condition. The uniformly dispersed nano-SiO2 particles could improve corrosion resistance of the coating, and hence nano-coating could still remain the good fire-resistant properties even after 500 h salt spray test.