回收聚丙烯基复合材料的耐候性与阻燃性能  

Weather Resistance and Flame Retardancy of Recycled Polypropylene Composites

作　　者：游一兰 贺国文 刘佳斌 李智明 YOU Yilan;HE Guowen;LIU Jiabin;LI Zhiming(College of Materials and Chemistry Engineering,Hunan City University,Yiyang Hunan 413000,China;Key laboratory of low carbon and environmental functional materials of college of Hunan province,Yiyang Hunan 413000,China)

机构地区：[1]湖南城市学院材料与化学工程学院,湖南益阳413000 [2]低碳与环境功能材料湖南省普通高校重点实验室,湖南益阳413000

出　　处：《包装学报》2024年第3期1-7,共7页Packaging Journal

摘　　要：以回收聚丙烯(RPP)为基体,添加茶粉、纳米二氧化钛(Nano-TiO_(2))及聚磷酸铵(APP)制备了茶塑复合材料,并考察了茶粉、Nano-TiO_(2)用量对茶塑复合材料性能的影响。结果表明,适量茶粉可提高RPP的抗拉强度,茶粉质量分数10%时,抗拉强度增加了26.1%;Nano-TiO_(2)既能增加茶塑复合材料的抗拉强度,也可抑制热老化过程中抗拉强度的下降,从而增加了材料的耐候性。考察了Nano-TiO_(2)与APP对茶塑复合材料阻燃性能的协同作用,发现Nano-TiO_(2)与APP共同作用能进一步降低茶塑复合材料的水平燃烧速度。在Nano-TiO_(2)质量分数为4%时,水平燃烧速度最低,仅有23.3 mm/min,比不含Nano-TiO_(2)时降低了40.6%。当固定Nano-TiO_(2)质量分数为4%,改变APP用量时,在APP质量分数为15%时,水平燃烧速度仅为20.2 mm/min。Tea plastic composites were prepared using recycled polypropylene(RPP)as matrix,with the addition of tea powder,Nano-TiO_(2) and ammonium polyphosphate(APP).The effects of tea powder and Nano-TiO_(2) content on the properties of tea plastic composites were investigated.The results showed that proper amount of tea powder can improve the tensile strength of RPP,and when the tea powder mass fraction was 10%,the tensile strength was increased by 26.1%.Nano-TiO_(2)can improve the tensile strength of tea plastic composite and slow down the decrease of tensile strength in the process of thermal aging,thus improving the weather resistance.The synergistic effect of Nano-TiO_(2) and APP on the flame retardant performance of tea plastic composite was investigated.The results showed that the synergistic effect of Nano-TiO_(2)and APP can further reduce the horizontal burn rate of tea plastic composite.When the mass fraction of Nano-TiO_(2)was 4%,the horizontal burn rate of the composite was the lowest at 23.3 mm/min,which is 40.6%lower than that of the composite without Nano-TiO_(2).When the mass fraction of Nano-TiO_(2) was fixed at 4% and the amount of APP was changed,the horizontal burn rate of the composite was only 20.2 mm/min when the mass fraction of APP was 15%.

关 键 词：回收聚丙烯 茶塑复合 耐候性 水平燃烧速度 

分 类 号：TB324[一般工业技术—材料科学与工程]