含磷丙烯酸酯核壳阻燃剂的合成及其在聚乳酸中的应用
DOI:
作者:
作者单位:

华北理工大学材料科学与工程学院

作者简介:

通讯作者:

中图分类号:

基金项目:

河北省自然科学基金资助项目(E2019209446)


Synthesis of Phosphorus Containing Acrylate Core-shell Flame Retardant and Its Application in Poly(lactic acid)
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为了同时改善聚乳酸(PLA)阻燃性和韧性,本文以甲基膦酸二乙酯丙烯酸酯(DEAMP)为核层材料、甲基丙烯酸甲酯(MMA)为壳层材料,三烯丙基异氰酸酯(TAIC)为核层交联剂,通过种子乳液聚合法,制备了平均粒径约为190nm的含磷丙烯酸酯核壳阻燃剂(P-CM),透射电镜(TEM)图片显示了典型的核壳结构。差示扫描量热仪(DSC)和热重分析(TG)测试结果表明,P-CM的核层、壳层玻璃化转变温度分别为-13.6℃和115.6℃,初始分解温度(Td5%)为263℃,分解后残余物为36wt%。将5%P-CM用于增韧和协效10%APP/5%β-CD阻燃的PLA,结果表明,与10%APP/10%β-CD阻燃的PLA比,极限氧指数(LOI)提高了5.7%;同时,材料冲击强度提高了182.5%,拉伸强度提高了2.9%,断裂伸长率增加了28.9%,获得了具有高阻燃性和高韧性的PLA材料。

    Abstract:

    In order to simultaneously endowing the flame retardancy and toughness of poly (lactic acid) (PLA), a phosphorus containing acrylate core-shell flame retardant (P-CM) with an average particle size of about 190nm was prepared by seed emulsion polymerization using DEAMP core material, methyl methacrylate (MMA) as shell material and three allyl isocyanate (TAIC) as crosslinking agent. TEM results show that it has a typical core-shell structure. The thermal properties of PLA materials was characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TG). The results showed that: the glass transition temperatures of the core and shell of P-CM were 13.6 ℃ and 115.6 ℃ respectively, the initial decomposition temperature (Td5%) was 263 ℃, and the residue after decomposition was 36wt%. After adding 5% P-CM to toughening and synergistic 10%App/5%β-CD flame retardant PLA, its limiting oxygen index (LOI) value was increased by 32.9%. It is worth mentioned that the toughness of modified P-CM is improved greatly, in which the impact strength increased by 182.5%, the tensile strength increased by 2.9%, and the elongation at break increased by 28.9%, respectively. The PLA material with high flame retardancy and toughness was obtained.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-10-30
  • 最后修改日期:2021-11-30
  • 录用日期:2022-03-27
  • 在线发布日期:
  • 出版日期:
您是第位访问者
编辑出版:《高分子材料科学与工程》编辑部
地址:四川省成都市一环路南一段24号 四川大学高分子研究所
电话:028-8540 1653  E-mail:gfzclbjb@163.net; gfzclbjb@vip.sina.com
高分子材料科学与工程 ® 2022 版权所有
技术支持:北京勤云科技发展有限公司