含有仙人球的水基阻燃涂料

IF 2.3 4区 材料科学 Q2 CHEMISTRY, APPLIED Journal of Coatings Technology and Research Pub Date : 2024-06-11 DOI:10.1007/s11998-024-00947-y
Van Phuc Mac, Minh Thanh Do, Anh Hiep Nguyen, Phi Hung Dao, Thien Vuong Nguyen, Cong Nguyen Pham, Tuan Anh Nguyen
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摘要

这项研究探讨了仙人球(空心微球)如何为水性丙烯酸涂层提供阻燃能力。为此,在钢铁表面制备了膨胀型阻燃涂层,由丙烯酸乳液聚合物、阻燃添加剂(聚磷酸铵、三聚氰胺、季戊四醇)和阻燃填料(TiO2、Al(OH)3)组成。实验结果表明,在 900-1000 °C 的灼烧炬下进行 60 分钟的耐火试验后,涂层钢材的背面温度在 200-250 °C 之间。与不含 FACs 的纯涂层相比,在丙烯酸聚合物涂层中添加仙人球(2-10 wt%)可将涂层钢材的背面温度从 27 ℃ 降至 76 ℃,从而提高其耐火性能。熔炉试验的数据显示,涂层中 FAC 的存在降低了涂层的膨胀系数(从 14.9% 提高到 33.5%),但产生的炭层更致密,热屏蔽能力更强。XRD 分析证实,在高温下,炭黑与涂层基质之间通过形成热稳定化合物而发生相互作用。TGA 数据表明,涂料中 FAC 含量的增加提高了高温下的炭重残留,增强了其热稳定性和耐火性。机械测试数据表明,丙烯酸聚合物涂层中的碳圈不会影响其硬度,但会降低其与钢表面的附着力(从 5.3% 降至 23.8%)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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A water-based flame-retardant coating with cenospheres

This work explores how cenospheres (hollow microsphere) can provide a flame-retardant ability to the waterborne acrylic coating. For this purpose, the intumescent fire-retardant coating was prepared on the steel surface, from the acrylic emulsion polymer, flame-retardant additives (ammonium polyphosphate, melamine, pentaerythritol), and flame-retardant fillers (TiO2, Al(OH)3). The experimental results showed that after 60-min fire resistance test under burning torch of 900–1000 °C, the backside temperature of coated steel was in the range of 200–250 °C. Addition of cenosphere into the acrylic polymer coating (at 2–10 wt%) enhanced its fire resistance performance by reducing the backside temperature of coated steels from 27 to 76 °C, as compared to the pure coating without FACs. Data from the furnace test showed that the presence of FACs in coating reduced its intumescent factor (from 14.9 to 33.5%) but produced the denser char layer with a better heat shielding ability. XRD analysis confirmed the interaction between cenosphere and coating matrices at high temperatures by forming the heat-stable compounds. TGA data demonstrated that increasing the content of FACs in coating increased its char weight residue at high temperatures and enhanced its thermal stability and fire resistance. Data from the mechanical test indicated that the presence of cenosphere in the acrylic polymer coating did not affect its hardness but decreased its adhesion to the steel surface (from 5.3 to 23.8%).

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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research 工程技术-材料科学:膜
CiteScore
4.30
自引率
8.70%
发文量
130
审稿时长
2.5 months
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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