蔓延规则材料聚苯乙烯板的热释放速率模型

doi:10.11949/j.issn.0438-1157.20171446

化工学报 ›› 2018, Vol. 69 ›› Issue (8): 3747-3753.DOI: 10.11949/j.issn.0438-1157.20171446

• 材料化学工程与纳米技术 • 上一篇下一篇

蔓延规则材料聚苯乙烯板的热释放速率模型

陈沛然¹, 李海航^1,2, 丁杰³, 林鹏^2,4

1 中国计量大学质量与安全工程学院, 浙江杭州 310018;
2 浙江省家具检测技术研究重点实验室, 浙江杭州 310018;
3 杭州市余杭区质量计量监测中心, 浙江杭州 311100;
4 浙江省家具与五金研究所, 浙江杭州 310013

收稿日期:2017-11-01 修回日期:2018-02-02 出版日期:2018-08-05 发布日期:2018-08-05
通讯作者: 李海航
基金资助:
浙江省家具检测技术研究省家具重点实验室开放研究基金项目（2016J09）。

Heat release rate model of regular burning polystyrene sheet

CHEN Peiran¹, LI Haihang^1,2, DING Jie³, LIN Peng^2,4

1 College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China;
2 Key Laboratory of Furniture Inspection Technology of Zhejiang Province, Hangzhou 310018, Zhejiang, China;
3 Quality Measurement and Monitoring Center of Yuhang District of Hangzhou City, Hangzhou 311100, Zhejiang, China;
4 Research Laboratory of Furniture and Hardware of Zhejiang Province, Hangzhou 310013, Zhejiang, China

Received:2017-11-01 Revised:2018-02-02 Online:2018-08-05 Published:2018-08-05
Supported by:
supported by the Open Research Fund of Key Laboratory of Furniture Inspection Technology of Zhejiang Province (2016J09).

摘要/Abstract

摘要：

在小尺寸ISO 9705锥形量热平台开展了多个尺寸聚苯乙烯薄板燃烧实验，燃烧时火焰从点燃角开始以相等的蔓延速度向未燃区域加速蔓延，呈扇形规则扩散。对实验测得的燃烧热释放速率结合燃烧过程分析发现，总释热量与材料面积呈良好的线性关系，且没有燃烧平台期的上升段释热量占总释热量比例约为77.83%。利用指数函数建立数学模型表达HRR曲线，涉及的燃烧热物理性能包括热释放速率峰值、峰值时间、燃烧释热量。以实验组10×10-1的峰值时间为参考时间，拟合得到上升阶段曲线表达式，无平台期的峰值及峰值时间可由上升阶段释热量与总释热量的关系计算得到。验证结果表明，该数学模型能够较好地预测燃烧蔓延规则的聚苯乙烯材料无平台期的燃烧热释放速率发展情况和描述含平台期的热释放速率变化过程。

关键词: 聚苯乙烯, 热释放速率, 数值分析, 数学模拟, 实验验证

Abstract:

Combustion experiments of polystyrene (PS) sheet in multiple dimensions were carried out on a small scale ISO 9705 cone calorimeter, which took 10cm×10cm plate as one unit and measured value of heat release rate. The flame began to accelerate spreading from the ignition corner to unburned region at the same speed upon ignition at right corner of PS sheet, and diffused in a geometry of regular fan. According to the shape of heat release rate (HRR) curve, combustion process was divided into three stages:ascending, plateau and declining stages. By analysis of heat release rate and combustion process, a linear relationship was found between total heat release and material area. Heat release in the ascending stage was about 77.83% of total heat release for burnings without a plateau. HRR curves were fitted with exponential function by combustion thermophysical parameters, such as heat release peak rate, peak time and heat release amount. The fitting results showed similar parameters which a mean of ascending stage was 0.003888 and mean of declining stage was -0.01178. Unified mathematical equation was obtained for ascending stage by taking 10×10-1 peak time of an experimental group as reference time. Both non-plateau peak value and peak time was calculated from correlation of heat release at ascending stage and total heat release. Further experiments verified that the mathematic model can predict heat release rate development of regular burning polystyrene sheet with and without plateau stage.

Key words: polystyrene, heat release rate, numerical analysis, mathematical modeling, experimental validation

中图分类号:

TK16

陈沛然, 李海航, 丁杰, 林鹏. 蔓延规则材料聚苯乙烯板的热释放速率模型[J]. 化工学报, 2018, 69(8): 3747-3753.

CHEN Peiran, LI Haihang, DING Jie, LIN Peng. Heat release rate model of regular burning polystyrene sheet[J]. CIESC Journal, 2018, 69(8): 3747-3753.

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蔓延规则材料聚苯乙烯板的热释放速率模型

Heat release rate model of regular burning polystyrene sheet

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