采用锥形量热仪(CONE)研究和评价新型可膨胀石墨防火涂料

利用锥形量热仪(CONE)实验获得的热失重速率(MLR)、热释放速率(HRR)、有效燃烧热(EHC)、比消光面积(SEA)、CO2、CO和点燃时间(TTI)等参数对可膨胀石墨防火涂料与传统的膨胀型防火涂料的阻燃性能、烟毒释放、阻燃机理进行了对比研究。结果表明，与传统的膨胀型防火涂料相比，可膨胀石墨防火涂料由于在热降解过程中成炭量较高，炭层具有更好的热稳定性，因而其阻燃和隔热性能更为优良，具有更长的耐燃时间，且烟毒释放少，安全性能更高。

Research on Fire Retardant Coatings Coutaining Expandable Graphite Using CONE Calorimeter

The flame retardant performance, emission of toxic fumes, flame retardant mechanism of new fire retardant coatings made from expandable graphite contrasting are compared with those of traditional intumescent fire (retardant) coatings by various parameters such as MLR, HRR, EHC, SEA, CO2, CO and TTI. These parameters were measured by Cone calorimeter with irradiance of 20kW/m~2. Results show that the new coatings are superior to the traditional intumescent fire retardant coatings in the flame retardant performance, fire-resistant time, and (emission) of toxic fumes, due to the fact that the new coatings involve more char with good heat stability in the course of degradation.