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含有阻燃剂DOPO-VTES和α-ZrP的聚乙烯醇复合膜
Jiayou Xu1, Minyi Luo1, Riyan Lin1
1School of Chemistry & Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
这项研究使用新的DOPO-VTES和酸 (α-ZrP) 组合开发了阻燃聚乙醇 (PVA) 薄膜. 增强的PVA薄膜显著提高了耐火性,为更安全的材料提供了潜力.
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
- 阻燃性是指阻燃性是指阻燃性.
背景情况:
- 聚乙醇 (PVA) 具有理想的特性,但受到高易燃性限制.
- 提高PVA阻燃性对于扩大其在各种行业中的应用至关重要.
研究的目的:
- 为了合成一种新型的阻燃剂,9,10-二-9,10-奥克萨-10-酸10-氧化物 (DOPO) -维尼尔trimethoxysilane (VTES).
- 通过加入DOPO-VTES和酸 (α-ZrP) 来增强PVA的阻燃性.
- 调查添加剂的阻燃机制和合作作用.
主要方法:
- 通过DOPO和VTES之间的加法反应合成DOPO-VTES.
- 通过将PVA与DOPO-VTES和α-ZrP混合而制备的阻燃PVA薄膜.
- 使用圆热度测试 (CCT) 评估火焰阻燃性,并通过热重度分析 (TGA) 分析热稳定性.
主要成果:
- 与纯PVA相比,阻燃PVA薄膜的热释放率 (HRR) 和总热释放率 (THR) 显著降低.
- 在修改后的PVA薄膜中,TGA显示了剩余炭含量增加.
- DOPO-VTES通过基组交叉链接接在PVA上接种,α-ZrP作为合作剂.
结论:
- DOPO-VTES和α-ZrP的组合有效地提高了PVA的阻燃性.
- 提出了一种协同阻燃机制,涉及气相抑制 (DOPO),隔热 (来自VTES的SiO2) 和增强碳化 (α-ZrP).
- 形成密集的碳层有效抑制了热量和氧气的传输,从而提高了火焰阻燃性.
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