不同双价金属离子的高度阻燃材料酸盐/银酸盐:合成,表征和协同多金属效应
Jintai Lv1, Zichao Li2, Ruitao Dong1
1College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, China.
International journal of biological macromolecules
|July 15, 2023
概括
使用酸盐和酸银与双价金属离子的新混合材料表现出极好的阻燃性. 藻酸盐/银酸盐显示出最高的热稳定性和消防安全性能,超过了传统的阻燃剂.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 消防安全工程 消防安全工程
背景情况:
- 开发先进的阻燃材料对于提高各种应用中的安全性至关重要.
- 基于酸盐的复合材料由于其独特的特性而具有潜力,但需要功能化以提高性能.
- 银酸盐和双价金属离子在阻燃性方面的协同效应被探索.
研究的目的:
- 合成和描述新型酸盐/银酸盐混合材料,其中包含双价金属离子 (Ca2+,Cu2+,Zn2+).
- 评估这些混合材料的阻燃性能,并了解这些混合材料的-多金属阻燃效应.
- 在酸盐矩阵中研究银酸盐和双价金属离子之间的协同阻燃机制.
主要方法:
- 在现场制备MAlg/Ag3PO4 (M = Ca,Cu,Zn) 混合材料.
- 使用X射线衍射测量 (XRD),X射线光电子谱学 (XPS),扫描电子显微镜 (SEM) 和里埃变换红外频谱 (FTIR) 的表征.
- 通过热重力测量分析 (TGA),限制氧指数 (LOI) 和微热量测试 (MCC) 评估阻燃性,并通过TG-FTIR和Py-GC/MS进行机制研究.
主要成果:
- 合成的MAlg/Ag3PO4复合材料表现出良好的热稳定性.
- 观察到显著增强的限制氧指数 (LOI) 值:CaAlg/Ag3PO4 (62.6%),CuAlg/Ag3PO4 (46.5%),和ZnAlg/Ag3PO4 (79.8%),所有这些都超过了标准的27%值.
- 热稳定性按照以下顺序进行:ZnAlg/Ag3PO4 > CaAlg/Ag3PO4 > CuAlg/Ag3PO4,相应的热释放能力 (HRC) 为41,49和69J/g·K,这表明基于Zn的复合材料的消防安全性优越.
结论:
- 由于银酸盐和双价金属离子的协同作用,MAlg/Ag3PO4混合材料具有出色的阻燃性能.
- ZnAlg/Ag3PO4显示了最有前途的消防安全性能,其特点是高热稳定性和低热释放能力.
- 该研究阐明了阻燃机制,为设计先进,更安全的材料提供了洞察力.
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