摘要
为研究阻燃改性玻璃纤维环氧树脂复合材料在火灾环境下的热响应,考虑其在火灾环境下的热解过程,建立了热响应方程组,利用有限差分法计算分析单侧热流作用下的材料内部温度-时间历程与碳化规律。研究结果表明:建立的非线性热响应方程组可以有效预测玻璃纤维环氧树脂的温度-时间历程,与实验值吻合较好;阻燃改性玻璃纤维环氧树脂在相同热流工况下,材料内部温度略低于未改性材料;随着深度增加,阻燃改性玻璃纤维环氧树脂达到热解所需的时间更长,碳化过程变慢;热解反应区中不同深度位置的材料剩余质量分数在同一温度下不同,位置越深剩余质量分数越小,碳化程度越高。
In order to study the thermal response of flame-retardant modified glass fiber epoxy resin composites in fire, considering the pyrolysis process in fire, the thermal response equations were established, and a finite difference method was used to calculate and analyze the material′s internal time-dependent temperature progressions and carbonization subjected to one-sided heat flux. The theoretical results from the established nonlinear thermal response equations were validated against experimental data and a good agreement is observed. Flame retardant modified glass fiber epoxy resin under the same heat flow conditions, the internal temperature of the material is slightly lower than the unmodified material. With the increment of the depth, the time flame retardant modified glass fiber epoxy resin reaching the pyrolysis temperature increases and the carbonization process slows down. The residual mass fraction of materials at different depth in the pyrolysis reaction zone is slightly different at the same temperature, the residual mass fraction decreases and the degree of carbonization increases as the deeper the position rose.
作者
冯振宇
樊茂华
范保鑫
王纳斯丹
李翰
FENG Zhen-yu;FAN Mao-hua;FAN Bao-xin;WANG Na-si-dan(Key Laboratory of Civil Aircraft Airworthiness Technology, CAAC, Tianjin 300300, China;College of Airworthiness, Civil Aviation University of China, Tianjin 300300, China)
出处
《玻璃钢／复合材料》
CAS
北大核心
2019年第9期32-37,共6页
Fiber Reinforced Plastics/Composites
基金
中央高校基本科研业务费(3122017089)
关键词
玻璃纤维环氧树脂
热响应
阻燃
碳化
有限差分法
glass fiber epoxy resin
thermal response
flame retardant
carbonization
finite difference method
