文献类型：期刊文献

中文题名：三聚氰胺聚磷酸盐/次磷酸铝对高密度纤维板阻燃和力学性能的影响

英文题名：Effect of the Melamine Polyphosphate and Aluminum Hypophosphite on the Mechanical and Flame-retardant Properties of High Density Fiberboard

作者：唐启恒[1,2] 郭文静[1,2]

第一作者：唐启恒

机构：[1]中国林业科学研究院林业新技术研究所,北京100091;[2]中国林业科学研究院木材工业研究所,北京100091

年份：2021

卷号：35

期号：16

起止页码：16166-16171

中文期刊名：材料导报

外文期刊名：Materials Reports

收录：CSTPCD;;EI(收录号：20213910945162);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2021_2022】；

基金：中央级公益性科研院所基本科研业务费专项资金(CAFYBB2018SZ014,CAFYBB2018GD002-02)。

语种：中文

中文关键词：纤维板;三聚氰胺聚磷酸盐(MPP);次磷酸铝(AHP);力学性能;阻燃性能

外文关键词：fiberboards;melamine polyphosphate(MPP);aluminium hypophosphite(AHP);mechanical properties;flame retardancy

分类号：TB332;TQ323.4

摘要：本工作采用人造板热压工艺技术,将三聚氰胺聚磷酸盐(MPP)和次磷酸铝(AHP)作为阻燃剂引入高密度纤维板(HDF)中,制备MPP/AHP-HDF复合材料。采用弯曲强度、冲击强度、极限氧指数(LOI)、锥形量热仪等来评价阻燃剂对复合材料性能的影响。研究结果表明:随着阻燃剂添加量的增加,复合材料的弯曲强度、冲击强度明显下降,通过复合材料断面形貌可以看出阻燃剂与基体间界面粘接较差,界面应力传递效率低,故而阻燃剂的引入导致复合材料力学性能下降。随着阻燃剂添加量的增加,复合材料的LOI逐步增大,当阻燃剂添加量达到15%时,复合材料的LOI达到40%,而热释放速率峰值和总的热释放量呈下降趋势,这是因为MPP和AHP在燃烧过程中可以有效促进裂解产物成炭,而且MPP还产生很多不燃气体,进而稀释了可燃性气体的浓度,从而提高复合材料的阻燃性能。
Melamine polyphosphate(MPP)and aluminum hypophosphite(AHP)flame retardants were introduced into high density fiberboard(HDF)to prepare MPP/AHP-HDF composites by hot pressing technology of wood-based panels.The effects of flame retardants on the properties of composites were investigated by bending strength,impact strength,limiting oxygen index and cone calorimetry test.The results showed that the flexural strength and impact strength of the composites decreased obviously with increasing the flame retardant content.According to SEM characterization,it can be found that the poor compatibility between the flame retardant and matrix was observed.Furthermore,the stress wasn’t able to transfer effectively within the material,leading to the inferior mechanical properties.The flame retardancy of the composites was investigated by limiting oxygen index(LOI),and the flame retardant mechanism was also analyzed.The results showed that with the increase of flame retardant,the LOI values of the composites increased gradually with increasing the flame retardant contents.The LOI value of the composites reached 40%when the content of flame retardant reached 15%,meanwhile,the peak value of heat release and total heat release had a downward tendency.This was because MPP and AHP could promote effectively the char formation during the combustion process.Moreover,MPP could produce a lot of non-combustible gases which diluted the amount concentration of combustible gases.All these effects could improve the flame retardant properties of the composites.