摘要： 研究了 2种改性材料对膨胀防火涂料热降解和防火性能的影响。防火涂料由聚磷酸铵（APP）－季戊四醇（PER）－三聚氰胺（MEL）膨胀阻燃体系、两种树脂基体和溶剂组成。可膨胀石墨（EG）和氧化铁（Fe2O3）作为改性材料添加于涂料中，以提高涂料的防火性能和热稳定性。对于 EG、Fe2O3和 EG/Fe2O3对涂料防火性能、膨胀炭质层的热稳定性采用热质（TGA）、Ｘ－光电子能谱（XPS）和扫描电镜（SEM）进行了系统的分析。实验结果表明：对于膨胀炭质层而言，Fe2O3提高了其热稳定性，EG影响了其微观结构，而 EG/Fe2O3则结合了 2种材料的优点使涂料的防火性能得到了进一步提高。
关键词:
膨胀防火涂料,
热降解,
防火性能,
可膨胀石墨,
氧化铁
Abstract: The influences of two modifiers on thermal degradation and fire-resistant property of an intumescent coating was studied. The intumescent coating was prepared using an ammonium polyphosphate(APP)-pentaerythritol (PER)-melamine (MEL) intumescent flame retardant (IFR) system, two resins and a solvent. Expandable (EG) and ferric oxide (Fe2O3 ) were used as modifers to improve the fire resistant property of the coating and the thermal stability of the intumescent coatings. The effects of EG, Fe2O3 and EG/Fe2O3 on the fire-resistant property, char formation, thermal stability and morphological structures of the he coatings were investigated systematically by thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy(XPS) and scanning electronic microscope (sEM). The results showed that EG affected the microstructure. Fe2O3 improved the thermal stability, and EG/Fe2O3 combined the merits of both EG and Fe2O3 to further improve the fire resistant performance of the coatings resistant property; expandable graphite.
Key words:
intumescent coating,
thermal degradation,
fireferne oxide
李国新１, ２, 何廷树１, ２, 梁国正３. Fe2O3与可膨胀石墨对膨胀防火涂料热降解与防火性能的影响[J]. 涂料工业, 2010, 40(5): 37-41.
Li Guoxinq, He Tingshu, Liang Guozheng. Influences of Fe2O3 and Expandable Graphite on Thermal Degradation and Fire-resistant Property of Intumescent Coating[J]. Paint & Coatings Industry, 2010, 40(5): 37-41.