文献类型：期刊文献

中文题名：三聚氰胺聚磷酸盐对竹纤维/聚丙烯复合材料力学及阻燃性能的影响

英文题名：Effects of melamine pyrophosphate on mechanical and flame retardant properties of bamboo fiber/polypropylene composites

作者：唐启恒[1,2] 任一萍[1,2] 王戈[3] 程海涛[3] 郭文静[1,2]

第一作者：唐启恒

通信作者：Guo, Wenjing

机构：[1]中国林业科学研究院林业新技术研究所,北京100092;[2]中国林业科学研究院木材工业研究所,北京100091;[3]国际竹藤中心,北京100102

年份：2020

期号：3

起止页码：553-561

中文期刊名：复合材料学报

外文期刊名：Acta Materiae Compositae Sinica

收录：CSTPCD;;EI(收录号：20201808590165);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：“十三五”国家重点研发计划项目(2017YFD0600800)

语种：中文

中文关键词：竹纤维;三聚氰胺聚磷酸盐;复合材料;力学性能;阻燃性能

外文关键词：bamboo fiber;melamine pyrophosphate;composites;mechanical properties;flame retardancy

分类号：TQ314.248;TQ327

摘要：采用三聚氰胺聚磷酸盐(MPP)作为阻燃剂,加入到竹纤维/聚丙烯(BF/PP)复合毡中,制备MPP-BF/PP复合材料。采用力学测试和SEM研究MPP对MPP-BF/PP复合材料力学性能和微观形貌的影响;采用极限氧指数(LOI)、热失重(TG)和吸水率为指标研究MPP对MPP-BF/PP复合材料阻燃性、热稳定性和耐水性的影响。测试表明:MPP的质量分数小于30wt%时,MPP-BF/PP复合材料弯曲强度和冲击强度随MPP质量分数的增加先增大后减小,当MPP质量分数达到5wt%时,MPP-BF/PP复合材料呈现出最佳的弯曲强度和冲击强度;MPP在MPP-BF/PP复合材料内部均匀分布,而随着MPP质量分数的增加,MPP-BF/PP复合材料断裂面的粗糙度明显提高,即MPP与PP界面相容性变差,使其力学性能降低。LOI测试结果表明,MPP可以有效提高MPP-BF/PP复合材料的阻燃性能,当MPP质量分数为30wt%时,MPP-BF/PP复合材料LOI达到24.3%。热失重测试表明,MPP的加入可提高MPP-BF/PP复合材料的热分解温度,促进其残炭率明显增大,有利于提高MPP-BF/PP复合材料阻燃性能。耐水性能测试结果表明,MPP质量分数小于20wt%时,MPP对MPP-BF/PP复合材料的耐水性能没有明显影响。采用模糊综合评价法分析表明,MPP质量分数为10wt%时,MPP-BF/PP复合材料性能最优。
The melamine pyrophosphate(MPP)was introduced into bamboo fiber/polypropylene(BF/PP)mats as flame retardant to prepare a series of MPP-BF/PP composites.The effects of MPP mass fractions on mechanical properties,microstructures of MPP-BF/PP composites were investigated by mechanical test and SEM.The flame retardancy,thermal stability and water resistance of MPP-BF/PP composites were studied using limiting oxygen index(LOI),thermal gavimetric(TG)and water absorption as index.The results show that the bending strength and impact strength of the MPP-BF/PP composites increase firstly and then show a decreased trend when the mass fraction of MPP is less than 30 wt%.As the mass fraction of MPP increases up to 5 wt%,the bending strength and impact strength of MPP-BF/PP composites reach the optimal values.MPP distributes evenly in the MPP-BF/PP composites,but the surface roughness of cross section increases with the mass fraction of MPP increasing,which means the interface compatibility between MPP and PP becomes worse,reducing the mechanical properties of MPP-BF/PP composites.The results of LOI indicate that the flame retardancy of MPP-BF/PP composites is enhanced with the mass fraction of MPP increasing.When the mass fraction of MPP reaches to 30 wt%,the LOI is 24.3%.TG test reveals that the addition of MPP enhances the thermal decomposition temperature and char residues of MPP-BF/PP composites,contributing to the flame retardancy.The test of water resistance of MPP-BF/PP composites indicates that the water absorption and thickness swelling values are almost not affected by the mass fraction of MPP when less than 20 wt%.According to fuzzy comprehensive evaluation,the MPP-BF/PP composites will achieve the optimal properties when the mass fraction of MPP is 10 wt%.