
第18卷第3期 2018年6月
流动与传递
过程工程学报
The Chinese Journal of Process Engineering
VoL18 No.3 June2018
DOI: 10.12034/j.issn.1009-606X.217298
不同放置角度的建筑装饰材料PMMA的火焰蔓延特性
黄新杰12",刘伟",陈功建",王纯洁,唐刚",张浩
(1.安徽工业大学建筑工程学院,安徽马鞍山243002:2.中国矿业大学安全工程学院,江苏徐州221116)
摘要:为揭示建筑装饰材料聚甲基丙烯酸甲酯(有机玻璃,PMMA)在不同放置角度下的火焰蔓延特性,通过自主搭建的小尺寸火焰蔓延实验平台,研究了宽3cm、厚2mm的PMMA试样在不同放置角度下的火焰蔓延特性,结果表明,放置角度对PMMA 火焰蔓延过程中热解区域及预热区长度影响很大,由15°到30°及由-60°到-75°时(顺流火焰蔓延时放置角度为正,逆流火焰蔓延时放置角度为负),平均火焰倾角增加幅度最大,顺流火焰蔓延的火焰长度随放置角度增加先略减小后逐渐增加,逆流火焰蔓延的火焰长度随放置角度的绝对值增加而略减小,放置角度由0°到15°时,顺流火焰蔓延的平均速度呈跃变增长,逆流火焰蔓延的平均速度随放置角度绝对值增加而略降低
关键词:有机玻璃:放置角度:顺流火焰蔓延;逆流火焰蔓延:火焰蔓延速度
中图分类号:TQ325.7
文献标识码:A
文章编号:1009-606X(2018)03045407
Flame Spread Characteristics overBuilding Decoration Material of
PMMAwithDifferentPlacedAngles
Xinjie HUANGI-2",Wei LIU',Gongjian CHEN',Chunjie WANG',Gang TANG',Hao ZHANG
(I. School of Civil Engineering and Architecture, Anhui University of Technology, Ma'anshan, Anhui 243002, China; 2. School of Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 22l16, China)
Abstract: In order to reveal the effect of placed angle on flame spread characteristics over polymethyl methacrylate (PMMA), a small-scale flame spread setup was established and then a series of flame spread experiments on PMMA samples with width 3 cm, thick eeseeaaea influenced by placed angle through infrared image analysis. The average flame angle increased greatly when the placed angle changed from 15° to 30° and from 60° to 75° (for upward flame spread, the placed angle is positive, and for downward flame spread, the placed angle is negative). Meanwhile, for upward flame spread, the flame length decreased slowly and then increased with placed angle, eeeaneoeaeaaaeesea flame spread, when the placed angle changed from 0° to 15°, the average flame spread speed will increase greatly. And for the downward flame spread, the average flame spread speed decreased slightly with the absolute value of the placed angle.
Key words: polymethyl methacrylate; placed angle; upward flame spread; downward flame spread; flame spread speed
1前言
聚甲基丙烯酸甲酯(有机玻璃,PMMA)因具有较好的透明性、化学稳定性、力学性能、耐候性、易染色、易加工和外观优美等优点广泛应用于商业、建筑、轻工化工等领域,如街头标志、广告灯箱、电话亭和透明屋顶等,但PMMA树脂耐火性差,燃烧时易放出可
燃、易爆、刺激性气体并引发火灾.实际使用PMMA 常涉及不同的角度,如透明屋顶的坡度、门窗和采光体等.因而研究不同放置角度的PMMA的火焰蔓延特性具有很大的现实意义,国内外学者[1-7]对此也进行了一些研究.Quintierel1]研究了PMMA放置角度对其火焰蔓延速率的影响,通过理论分析发现火焰蔓延速度为试样放置角度、火焰传播方向和材料属性的函数,
收稿日期:201708-15,修回日期:2017-11-16
基金项目:国家重点基础研究发展计划(973)基金资助项目(编号:2012CB719700):国家自然科学基金资助项目(编号:51206002):火灾科学国家重点实
验室开放课题(编号:HZ2012-KF04):安激省自然科学基金青年基金资助项目(编号:1608085QE113)
作者简介:黄新杰(1981-),男,安微省合肥市人,博士,副教授,主要从事材料燃烧性能研究,E-mail:hxj501@mail.ustc.edu.cn.
引用格式:黄新杰,刘伟,陈功建,等,不同放置角度的建筑装饰材料PMMA的火焰蔓延特性,过程工程学报,2018,18(3):454-460
HuangJ,LiuW,ChenGJ,etal.FlameSpreadChara
Building Decoration Material of PMMA with Different Incline Angles
(in Chinese). Chin. J. Process Eng-, 2018, 18(3): 454460, DOI: 10.12034/j.issn.1009-606X.217298
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