羟基磷灰石纳米线改性酸性纳米ZSM-5分子筛对聚乳酸阻燃性能的影响  

Effect of HAP/HN on Flame Retardancy of PLA

作　　者：马琴[1,2] 路晶 罗发亮 MA Qin;LU Jing;LUO Faling(State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China;Yinchuan Branch,Jinci Technology Industrial Development Co.,Ltd.,Yinchuan 750011,China;Ningxia Branch,Gansu Building Materials Research and Design Institute Co.,Ltd.,Yinchuan 750001,China)

机构地区：[1]宁夏大学省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川750021 [2]金瓷科技实业发展有限公司银川分公司,宁夏银川750011 [3]甘肃省建材科研设计院有限责任公司宁夏分公司,宁夏银川750001

出　　处：《宁夏工程技术》2023年第3期219-224,共6页Ningxia Engineering Technology

基　　金：宁夏自然科学基金重点项目(2022AAC02017)。

摘　　要：聚乳酸(PLA)因受自身分子组成影响,热稳定性不佳、易燃且燃烧后几乎不留任何物质。为此,以膨胀型阻燃剂(IFR)和羟基磷灰石纳米线改性的酸性纳米ZSM-5分子筛作为协效剂(HAP/HN)来改善PLA燃烧过程中火焰蔓延以及熔滴滴落现象。结果显示:极限氧指数值(LOI)由18.0%(纯PLA)升至38.2%(含HAP/HN样品);垂直燃烧测试(UL-94)达到V-0级;在锥形量热测试(CCT)中,燃烧速率峰值(pHRR)由553 kW/m^(2)(纯PLA)降至191 kW/m^(2)(含HAP/HN样品),表明HAP/HN对PLA阻燃性能有良好的改善作用。Polylactic acid(PLA)is thermally unstable,flammable and leaves little substance after burning due to its molecular composition.An intumescent flame retardant(IFR)and the hydroxyapatite nanowire modified acidic ZSM-5 molecular sieve as synergist(HAP/HN)were used to improve the flame spreading and droplet dripping during PLA combustion.The results show that the limiting oxygen index(LOI)increased from 18.0%(pure PLA)to 38.2%(with HAP/HN samples).The vertical combustion test(UL-94)reached V-0 level.In the cone calorimetry test(CCT),the pHRR decreased from 553 kW/m^(2)(pure PLA)to 191 kW/m^(2)(with HAP/HN samples),indicating that HAP/HN has a good improvement effect in the flame retardancy of PLA.

关 键 词：聚乳酸 膨胀型阻燃剂 ZSM-5分子筛 阻燃性能 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]