碳纤维环氧复合材料火灾危险综合评价

发布时间：2018-03-02 01:34

本文关键词： 安全工程碳纤维复合材料层次分析法火灾危险　出处：《安全与环境学报》2016年05期 　论文类型：期刊论文

【摘要】：碳纤维环氧复合材料是目前航空领域中应用最为广泛的结构材料之一,但其本身具有可燃性,一旦起火,会严重危及飞机结构安全。建立碳纤维环氧复合材料火灾评价体系,以层次分析法为基础,结合锥形量热仪试验数据对3种典型的碳纤维环氧复合材料的火灾危险性进行了综合评价。通过理论分析和试验测试得到FGI(火势增长指数)、THRI_(4min)(放热指数)、TSPI_(4min)(发烟指数)和ToxPI_(4min)(毒性气体生成速率指数)4个火灾危险性评价指数,能够很好地量化典型碳纤维环氧复合材料的火灾危险性,FGI能更好地辨识碳纤维环氧复合材料的火灾危险性。结果表明,双向碳纤维布和单向碳纤维预浸料的火灾危险性接近,表明织造方式的不同对火灾危险性影响很小,而碳纤维夹层板的火灾危险性相对较大。轻型飞机仪表箱部位相对于仪表板和机身框,火灾危险性较大,对此部位的防火应提出更高的要求。
[Abstract]:Carbon fiber epoxy composite (CFRP) is one of the most widely used structural materials in aeronautical field, but it is flammable. Based on the Analytical hierarchy process, Combined with the test data of cone calorimeter, the fire risk of three typical carbon fiber epoxy composites was comprehensively evaluated. Through theoretical analysis and experimental tests, FGI (fire growth index) was obtained. ) and four fire hazard assessment indices (ToxPI4) and ToxPII (toxic gas generation rate index), FGI can better identify the fire risk of carbon fiber epoxy composites. The results show that the fire risk of bidirectional carbon fiber sheet and unidirectional carbon fiber prepreg is close to that of FGI. The results show that the different weaving methods have little influence on the fire risk, while the carbon fiber sandwich plate has a relatively greater fire risk. The fire risk of the instrument box of light aircraft is higher than that of the instrument panel and fuselage frame. Higher requirements should be put forward for fire prevention in this area.
【作者单位】：沈阳航空航天大学辽宁省通用航空重点实验室辽宁省飞机火爆防控及可靠性适航技术重点实验室;
【基金】：辽宁省科学事业公益研究基金项目(GY2014-C-005)
【分类号】：V258.3

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