APP对木粉-HDPE复合材料阻燃和力学性能的影响  

Effects of APP on the Fire-Retardant and Mechanical Properties of Wood-Flour-HDPE Composite

作　　者：邵博[1] 张志军[1] 王清文[2] 宋永明[2] 

机构地区：[1]东北林业大学理学院 [2]东北林业大学生物质材料科学与技术教育部重点实验室,黑龙江哈尔滨150040

出　　处：《高分子材料科学与工程》2008年第4期93-96,100,共5页Polymer Materials Science & Engineering

基　　金：国家”863”项目资助(2002AA245141);全国博士学位论文作者专项资金项目资助(200457);国家农业科技成果转化资金项目资助(2006GB23600540)

摘　　要：以聚磷酸铵(APP)对木粉-HDPE复合材料(WF-HDPE)进行阻燃处理,用锥形量热仪系统评价复合材料的阻燃性能,并进行等温燃烧反应动力学分析,用万能力学试验机进行静态力学试验。结果表明,在35 kW/m2热辐射流量下,APP添加量达到15%时,WF-HDPE燃烧热释放速率(RHR)峰值和总热释放量(THR)均降低约50%、成炭率提高150%,表现出显著的阻燃作用;可用动力学模型ln(1-α)=-kt+C描述WF-HDPE的等温燃烧反应,APP的加入使反应速率常数k降低、半衰期延长。APP对WF-HDPE的冲击性能有显著的不利影响,但能改善刚性,对弯曲强度和拉伸强度影响不大。综合阻燃性能与力学实验结果,APP的适宜添加量为15%左右。Ammonium polyphosphate （APP） was applied to wood-flour-HDPE composite （WFHDPE） as a fire retardant. The burning behavior and the isothermal combustion kinetics of the composite were Studied with a cone calorimeter, and the mechanical properties of the composites were tested statically. The considerable fire-retardancy was observed with the addition of APP to WF-HDPE. The combustion of WF-HDPE composites （with or without APP as fire retardant） can be described as the chemical kinetic equation of first order reaction ln（ 1 - a ） = -kt ＋ C. The value of k is decreased and t1/2 increased by the addition of APP. The optimal loading of APP as the fire retardant of WF-HDPE composite is about 15%.

关 键 词：木粉-高密度聚乙烯复合材料 锥形量热仪 阻燃性能 力学性能 聚磷酸铵 

分 类 号：TB332[一般工业技术—材料科学与工程]