低热通量下碳纤维<strong>/</strong>环氧树脂层合板的燃烧特性

doi:10.11901/1005.3093.2020.153

材料研究学报

2020, Vol. 34

Issue (12): 933-938 DOI: 10.11901/1005.3093.2020.153

研究论文

本期目录 | 过刊浏览

低热通量下碳纤维/环氧树脂层合板的燃烧特性

陈少杰¹^,², 徐艳英¹^,²(

), 王志¹^,², 胡泊¹^,²

^1.沈阳航空航天大学安全工程学院沈阳 110136
^2.沈阳航空航天大学辽宁省飞机火爆防控及可靠性适航技术重点实验室沈阳 110136

Combustion Characteristics of Carbon Fiber/Epoxy Laminates at Low Heat Flux

CHEN Shaojie¹^,², XU Yanying¹^,²(

), WANG Zhi¹^,², HU Po¹^,²

^1.School of Safety Engineering, Shenyang Aerospace University, Shenyang 110136, China
^2.Liaoning Key Laboratory of Aircraft Safety and Airworthiness, Shenyang Aerospace University, Shenyang 110136, China

引用本文:

陈少杰, 徐艳英, 王志, 胡泊. 低热通量下碳纤维/环氧树脂层合板的燃烧特性[J]. 材料研究学报, 2020, 34(12): 933-938.
Shaojie CHEN, Yanying XU, Zhi WANG, Po HU. Combustion Characteristics of Carbon Fiber/Epoxy Laminates at Low Heat Flux[J]. Chinese Journal of Materials Research, 2020, 34(12): 933-938.

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摘要:

使用锥形量热仪研究了35 kW/m²热通量下碳纤维/环氧树脂层合板的点燃时间、质量损失速率、热释放速率等燃烧特性参数与其厚度的关系，建立了热穿透深度的数学模型以得到不同厚度层合板的热穿透深度、判别层合板的热厚热薄特性并分析燃烧过程。结果表明：在低热通量下，随着碳纤维/环氧树脂层合板厚度的增加其点燃时间延长、平均质量损失速率和质量损失速率峰值下降、总释放热量增大、热释放速率峰值先增大后减小；碳纤维/环氧树脂层合板在点燃时表现为热薄型或是热厚型，与其物理厚度有直接关系。热厚型材料有一个由热厚型向热薄型转变的热响应过程。

关键词 ：复合材料, 碳纤维/环氧树脂层合板, 锥形量热仪, 燃烧特性, 热穿透深度

Abstract：

The combustion characteristics of carbon fiber/epoxy laminates were investigated by means of cone calorimeter at 35 kW/m² heat flux in terms of ignition time, mass loss rate, heat release rate etc. The mathematical model of thermal penetration depth was established in order to acquire the relation of thermal penetration depth of materials with their thickness, which was a reference to differentiate the carbon designed fiber/epoxy laminate either as ‘thermally thin’ or ‘thermally thick’-type, and analyze the combustion process of laminates. The results show that with the increase of thickness of carbon fiber/epoxy resin laminate the ignition time increases, the average mass loss rate and the mass loss rate peak decrease, the total heat release increases, and the peak heat release rate increases first and then decreases. It follows that the carbon fiber/epoxy resin laminates present burning behavior as either ‘thermally thin’ or ‘thermally thick’-type may be depend upon its own physical thickness when it is ignited, and ‘thermally thick’ material has a changing thermal response process from ‘thermally thick’ to ‘thermally thin’-type during the combustion process.

Key words： composites carbon fiber/epoxy laminates cone calorimeter combustion characteristics heat penetration depth

收稿日期: 2020-05-07

ZTFLH:

V258

基金资助:辽宁省教育厅科学研究项目(JYT19065);辽宁省自然科学基金（博士启动）(20180540033)

作者简介: 陈少杰，男，1997年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.153 或 https://www.cjmr.org/CN/Y2020/V34/I12/933

表1 实验用碳纤维/环氧树脂层合板样品规格参数

图1 碳纤维/环氧树脂层合板点燃时间与厚度的关系

Parameter	Symbol	REF
Thermal conductivity (297 K)	$λ$	0.6 W/m·K
Density	$ρ$	1350 kg/m³
Specific heat	$c$	1000 J/kg·K

表2 碳纤维/环氧树脂复合材料热物性参数

表3 热穿透深度计算结果

图2 不同实验用样品剩余质量比值与时间的关系

图3 4种不同厚度碳纤维/环氧层合板的质量损失速率

表4 质量损失速率特征值

图4 热释放速率曲线

表5 热释放速率特征值及总释放热

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