微胶囊化聚磷酸铵的制备及其聚乳酸复合材料的阻燃性能研究  

Preparation of Microencapsulated Ammonium Polyphosphate Hybrid and Flame Retardancy of Polylactic Acid Composite

作　　者：陈明仙[1] 刘川 林春香[2] 施永乾 CHEN Mingxian;LIU Chuan;LIN Chunxiang;SHI Yongqian(School of Safety and Environment,Fujian Chuanzheng Communications College,Fuzhou 350007,China;College of Environment and Safety Engineering,Fuzhou University,Fuzhou 350108,China)

机构地区：[1]福建船政交通职业学院安全与环境学院,福建福州350007 [2]福州大学环境与安全工程学院,福建福州350108

出　　处：《安全与环境工程》2021年第6期8-15,共8页Safety and Environmental Engineering

基　　金：国家自然科学基金青年科学基金项目(51803031);福建省教育厅中青年教师教育科研项目(JAT201048)。

摘　　要：采用微胶囊包裹技术制备聚磷酸铵(APP)基杂化物,并将其与二氧化硅(SiO_(2))复配引入聚乳酸(PLA)中制备PLA复合材料,研究了该PLA复合材料的阻燃性能。结果表明:引入16.6%聚磷酸铵基杂化物(APP@SiO_(2)@MF)和3.4%SiO_(2)后,PLA复合材料的热稳定性明显提升,且PLA复合材料的UL-94达到了V-0等级;与纯PLA相比,PLA复合材料的热释放速率峰值和总热释放量分别显著降低60.2%和66.1%,其阻燃性能明显提升;PLA复合材料的CO_(2)释放速率峰值和总二氧化碳释放量较纯PLA分别降低51.8%和48.9%;PLA复合材料火灾安全性能的明显提升主要得益于APP@SiO_(2)@MF和SiO_(2)在凝聚相阶段催化成炭和在气相阶段捕捉自由基的效应,为制备阻燃PLA复合材料提供了一种新策略。This paper prepares ammonium polyphosphate based hybrid(APP@SiO_(2)@MF)by microencapsulation technology,and mixes APP@SiO_(2)@MF with SiO_(2) into polylactic acid(PLA)to prepare flame-retardant PLA composites,and studies the flame retardancy of the PLA composites.The results show that the thermal stability of PLA composites is obviously improved with the incorporation of 16.6%APP@SiO_(2)@MF and 3.4%SiO_(2).At the meantime,the UL-94 of polylactic acid composite achieves the V-0 rating.Compared with the pure PLA,the peak of heat release rate and total heat release of PLA composites are significantly reduced by 60.2%and 66.1%,respectively,and the flame retardancy of PLA composites are dramatically improved.Besides,the peak of carbon dioxide production rate and total carbon dioxide production of PLA composites are respectively decreased by 51.8%and 48.9%than that of pure PLA.The significantly improved fire safety performance of PLA composites is attributed to the catalytic charring in the condense phase and the capturing free radicals effect in the gas phase of APP@SiO_(2)@MF and SiO_(2).The work provides a novel strategy to prepare the flame retardant PLA composite.

关 键 词：微胶囊包裹 聚磷酸铵 二氧化硅 聚乳酸 阻燃性能 

分 类 号：X924.4[环境科学与工程—安全科学]