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聚氯乙烯/竹炭贴面复合材料的燃烧特性研究 被引量:1

Study on Combustion Characteristics of Poly(vinyl chloride)/Bamboo Charcoal Decorative Composites
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摘要 以竹炭(BC)和聚氯乙烯(PVC)为原料,通过熔融混炼热压后进行贴面,制备不同贴面PVC/BC复合材料。采用锥形量热、热失重、热重红外联用分析对不同贴面PVC/BC的燃烧行为与烟气生成特性进行表征,综合评价其燃烧安全性。结果表明,PVC单贴面提高材料的热稳定性,600℃时残炭量达67.99%,且HCl及燃烧初期的芳烃生成更少,但不利于控制总热释放量;增加薄木贴面后,材料的初始热解提前、热解速度增加,热释放速率峰值(423.91 kW/m^2),总热释放量(76.63 MJ/m^2)和总烟释放量(2121.51 m^2/m^2)均最高,600℃时残炭量仅为41.78%,有害气体释放量较多;贴面易使烟气释放更持久,但有利于燃烧初期抑烟,火灾初期提供更大的安全撤离机会,作为家居装饰材料应用具有一定前景。 The poly(vinyl chloride)(PVC)/bamboo charcoal(BC)composites with different veneers were prepared by melt mixing,hot pressing and surface veneering,and their combustion behavior and smoke generation characteristics were characterized by cone calorimetry,thermogravimetry and thermogravimetry infrared analysis.Their combustion safety was also evaluated comprehensively.The results indicated that the PVC veneer could improve the thermal stability of the composites.The yield of carbon residue was 67.99 wt% at 600℃ with lower amounts of HCl and aromatics formed in the early stage of combustion,which was disadvantageous to the control of total heat release.After the wood veneer was added,the initial thermal degradation started in advance,and the thermal degradation rate increased,resulting in a maximum peak heat release rate of 423.91 kW/m^2,a maximum total heat release of 76.63 MJ/m^2 and a maximum total smoke release of 2121.51 m^2/m^2.In this case,the yield of carbon residue was only 41.78% at 600℃ with more harmful gas released.In addition,the veneer was easy to make smoke release during a longer period,which was advantageous for smoke suppression in the early stage of combustion.This provides more opportunities for safe evacuation in the early stage of a conflagration.Therefore,the composites developed by this work exhibit some application prospects for home decoration.
作者 章亮 柴伟胜 王珊珊 李文珠 吴强 张文标 戴春平 ZHANG Liang;CHAI Weisheng;WANG Shanshan;LI Wenzhu;WU Qiang;ZHANG Wenbiao;DAI Chunping(College of Engineering,Zhejiang A&F University School,Hangzhou 311300,China;Department of Wood Science,Forest Sciences Centre,University of British Columbia,Vancouver V6T1Z4,Canada)
出处 《中国塑料》 CAS CSCD 北大核心 2021年第1期37-46,共10页 China Plastics
基金 浙江省重大专项——功能性炭基木质复合装饰材料绿色制造关键技术及应用(2018C02008)。
关键词 竹炭 聚氯乙烯 复合材料 贴面 燃烧特性 bamboo charcoal poly(vinyl chloride) composite veneer combustion characteristics
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