应用化学 ›› 2023, Vol. 40 ›› Issue (1): 69-78.DOI: 10.19894/j.issn.1000-0518.220088

• 研究论文 • 上一篇    下一篇

单宁酸/聚乙烯醇的阻燃性能

林渊, 陈嘉炼, 李红周()   

  1. 福建师范大学环境与资源学院、碳中和现代产业学院,聚合物资源绿色循环利用教育部工程研究中心,福州 350007
  • 收稿日期:2022-03-22 接受日期:2022-08-03 出版日期:2023-01-01 发布日期:2023-01-28
  • 通讯作者: 李红周
  • 基金资助:
    福建省自然科学基金(2021J01198);泉州市科技计划项目(2022C008R)

Flame Retardant Properties of Tannic Acid/Poly(Vinyl Alcohol)

Yuan LIN, Jia-Lian CHEN, Hong-Zhou LI()   

  1. College of Environmental and Resources,College of Carbon Neutral Modern Industry,Engineering Research Center of Polymer Resources Green Recycling of Ministry of Education,Fujian Normal University,Fuzhou 350007,China
  • Received:2022-03-22 Accepted:2022-08-03 Published:2023-01-01 Online:2023-01-28
  • Contact: Hong-Zhou LI
  • About author:lihongzhou@fjnu.edu.cn
  • Supported by:
    the Natural Science Foundation of Fujian Province(2021J01198);the Scientific and Technological Project of Quanzhou(2022C008R)

摘要:

采用模压成型的方法制备了单宁酸/聚乙烯醇(TA-PVA)共混物,并研究了不同TA/PVA配比对TA-PVA共混物的阻燃性能的影响。通过锥形量热仪、热重分析仪(TGA)、差示扫描量热仪(DSC)、垂直燃烧(UL-94)测试仪和极限氧指数(LOI)测试仪等对制备的TA-PVA共混物的阻燃性能进行了测试。结果表明,TA的加入能提高PVA的阻燃性能。TA和PVA能够通过分子间氢键形成稳定的TA-PVA共混物。当TA-PVA共混物中TA含量增加,所制备得到的TA-PVA共混物的热稳定性增加,玻璃化转变温度提高。当n(TA)∶n(PVA)=1∶50时,TA-PVA共混物的LOI值达到31.6%,UL-94等级为V-1级,热释放速率峰值从634.9 kW/m2降至328.1 kW/m2,烟气产生速率从0.18 m2/s降至0.10 m2/s。

关键词: 单宁酸, 聚乙烯醇, 阻燃性能

Abstract:

Blends of tannic acid (TA)/poly(vinyl alcohol) (PVA) are prepared by compression molding and the effect of different TA/PVA ratios on the flame retardant properties of the TA-PVA blends is studied. The flammability of TA-PVA blends is assessed using cone calorimetry, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), UL-94 tester and LOI tester. The addition of TA can improve the flame retardancy of PVA through hydrogen bonding between TA and PVA. The more the content of TA in the TA-PVA blends, the better the thermal stability of TA-PVA and the glass transition temperature of TA-PVA. When the ratio of n(TA)∶n(PVA)is 1∶50, the LOI value of TA-PVA is 31.6% and UL-94 grade reaches V-1 level, the peak heat release rate of TA-PVA decreases from 634.9 kW/m2 to 328.1 kW/m2 and smoke production rate decreases from 0.18 m2/s to 0.10 m2/s.

Key words: Tannic acid, Poly(vinyl alcohol), Flame retardancy