表面改性纳米红磷-聚乙烯醇高性能复合薄膜的制备及性能研究
Preparation and properties of high-performance surface modified nano-red phosphorus-polyvinyl alcohol composite films
张佳琦 1张迪 1王鑫 1桂宙1
作者信息
- 1. 中国科学技术大学火灾安全全国重点实验室,合肥,230026
- 折叠
摘要
以红磷(RP)、二乙烯三胺(DETA)和聚乙二醇(PEG)为原料,采用简单、低毒的胺类溶解法制备得到了纳米红磷颗粒(NRP@PEG).通过溶液混合法将NRP@PEG引入聚乙烯醇(PVA)基体中,制备了阻燃型聚乙烯醇复合薄膜(PVA-NRP@PEG).热重分析(TGA)表明,添加2.0 wt％的NRP@PEG,使残炭量较纯样PVA增加195％.微型量热仪(MCC)结果显示,NRP@PEG的添加对热释放容量(HRC)和总热释放量(THR)有明显降低作用,可以有效减少燃烧过程的热释放,提高PVA的阻燃性.并且,PVA-NRP@PEG薄膜具有良好的透光性和机械性能,加入1.0 wt％的NRP@PEG可以在保证PVA韧性基础上使拉伸强度增加76.7％.此外,还利用扫描电镜(SEM)对复合薄膜的凝聚相阻燃机理进行了研究.
Abstract
In this paper,red phosphorus nanoparticles(NRP@PEG)were prepared by a simple and low-toxic amine dissolution method using red phosphorus(RP),diethylenetriamine(DETA)and polyethylene glycol(PEG)as raw materials.Flame retardant polyvinyl alcohol composite films(PVA-NRP@PEG)were prepared by introducing NRP@PEG into the PVA matrix using the solvent mixing method.Thermogravimetric analysis showed that adding 2.0 wt％NRP@PEG increased the carbon residue content by 195％compared with PVA.The microcalorimeter(MCC)results demonstrated that adding NRP@PEG can significantly decrease the heat release capacity and total heat release value,effectively reducing the heat release during combustion and enhancing PVA's flame retardancy.Moreover,PVA-NRP@PEG film exhibits excellent light transmittance and mechanical properties,with a 76.7％increase in tensile strength when incorporating 1.0 wt％NRP@PEG while maintaining PVA toughness.In addition,scanning electron microscopy(SEM)was used to study the flame retardant mechanism of the condensed phase.
关键词
红磷/纳米颗粒/复合材料/热性能/阻燃性能Key words
Red phosphorus/Nanoparticles/Composite material/Thermal performance/Flame retardancy引用本文复制引用
出版年
2024
NETL
NSTL
万方数据