--多元件阻燃剂的构造及其在柔性PVC复合材料中的性能
Xue Li1, Xiaoyuan Liu1, Zhihui Lv1,2,3
1School of Chemical Engineering, Qinghai University Xining 810016 China danglix@163.com.
RSC advances
|August 27, 2025
概括
一种新的--阻燃剂 (MO@MH-PEPE) 通过减少易燃性和有毒烟雾,显著提高了柔性PVC (fPVC) 的安全性. 这种先进的材料提高了机械性能,为fPVC应用提供了更安全的替代品.
科学领域:
- 材料科学
- 聚合物化学
- 阻燃性
背景情况:
- 由于高易燃性和有毒烟雾,柔性PVC (fPVC) 存在重大火灾风险.
- 现有的阻燃剂往往难以平衡消防安全与机械性能.
研究的目的:
- 为fPVC开发一种新型的多元件阻燃剂.
- 为了提高fPVC的阻燃性,烟雾抑制性和机械性能.
主要方法:
- 合成氧化混合氧化物 (MO@MH) 并用氧化 (PEPE) 表面修饰.
- 使用FTIR,XPS和SEM对材料进行了表征.
- 将MO@MH-PEPE纳入fPVC,并通过LOI,UL-94,圆热量计,TGA-FTIR和机械测试来评估其性能.
主要成果:
- 通过 P-O-Mg 键向 MO@MH 移植 PEPE 已确认,提高了接口兼容性.
- 在FPVC复合材料中达到32.0%的极限氧度指数 (LOI) 和UL-94V-0等级.
- 与fPVC/MH相比,最大热释放率 (pHRR) 降低了47.16%,总烟雾产生率 (TSP) 降低了75.15%.
- 煤炭残留率提高到50.00%,并改善了石墨化.
- 拉力和冲击强度分别增加了28.35%和6.50%.
结论:
- 协同的Mg-Mo-P系统 (MO@MH-PEPE) 提供了对fPVC的优越阻燃性和烟雾抑制.
- 增强的界面粘附有助于改善机械性能.
- 这项工作为开发高性能,更安全的FPVC材料提供了有前途的方法.
相关概念视频
01:16Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
2.7K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
2.7K
01:22Fiber Reinforced Concrete
130
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
130