次磷酸盐阻燃剂阻燃聚乳酸材料的研究
关键词 聚乳酸 次磷酸盐 阻燃 作用机理
毕业论文设计说明书外文摘要
Title Flame Retardant of polylactic acid composites based on hypophosphite
Abstract
A series of flame retardant of polylactide composites (FR-PLA) based on phenyl phosphinic acid aluminum (ALPP) and vinyl silicone Resin (VSR) were prepared by
melt blending method. The mechanical properties, flame retardant and thermal behavior of PLA were investigated by mechanical test, limiting oxygen index (LOI), UL-94 vertical burning test, thermogravimetric analysis (TGA), X-ray diffraction (XRD) and FTIR. The results showed that the PLA composites presented reduced mass loss rate and higher char residue than neat PLA. After joining the flame retardant LOI has significantly improved, Tensile strength and elongation of the material has declined. By comparing TGA of ALPP-PLA and ALPP-VSR-PLA, VSR has dramatically improved the stability of silicone materials.
Keywords Polylactic acid Aluminum Hypophosphite Flame Retardance mechanism analysis
目 次
1 引言 1
1.1 聚乳酸（PLA） 1
1.1.1 聚乳酸的简介 1
1.1.2 聚乳酸的应用 1
1.2 乙烯基硅树脂(VSR) 2
1.3 化学阻燃剂 2
1.3.1 磷系阻燃剂 2
1.3.2 含卤阻燃剂 3
1.3.3 含锑阻燃剂 3
1.3.4 含氮阻燃剂 3
1.3.5 含硼阻燃剂 3
1.3.6 含硅阻燃剂 3
1.4 次磷酸盐类阻燃剂的研究现状 4
1.5 阻燃剂的协同作用 4
1.6 本课题的研究内容和意义 4
2 实验部分 6
2.1 实验原料 6
2.2 实验设备及仪器 6
2.3 实验前期准备及样品制备 7
2.3.1 乙烯硅树脂的制备及处理 7
2.3.2 单组份阻燃PLA的制备 7
2.3.3 苯基次膦酸铝和乙烯基硅树脂复合阻燃PLA的制备 7
2.4 性能测试 8
2.4.1 氧指数测定 8
2.4.2 垂直燃烧实验 8
2.4.3 拉伸性能测试 8
2.4.4 红外光谱测试 8
2.4.5 热重分析 8
2.4.6 X-电子衍射分析 8
3 实验结果和讨论 9
3.1 ALPP复合PLA材料的氧指数测试和垂直燃烧 9
3.2 ALPP复合PLA材料的拉伸性能分析 10