主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2026, Vol. 45 ›› Issue (9): 133-139.

• • 上一篇    下一篇

有机改性二氧化钛对膨胀型水性防火涂料性能的影响

王长庚1, 刘杨2,3, 黄震1, 张胜4, 王俊胜2,3   

  1. （1.天津灯塔涂料工业发展有限公司，天津 300280； 2.应急管理部天津消防研究所，天津 300381； 3.天津市消防安全技术重点实验室，天津 300381；4.北京化工大学 材料科学与工程学院，北京 100029）
  • 收稿日期:2025-07-22 修回日期:2025-09-17 出版日期:2026-09-15 发布日期:2026-09-15
  • 作者简介:王长庚，天津灯塔涂料工业发展有限公司，硕士，主要从事特种涂料的研发工作，天津经济技术开发区南港工业区安永路66号，300280。
  • 基金资助:
    天津市科技计划项目（24ZYCGYS00670，24JCQNJC00180）；应急管理部天津消防研究所青年科技人才创新基金项目（2025SJCXJJ02）

Effect of organically modified titanium dioxide on the performance of intumescent waterborne fireproof coatings

Wang Changgeng1, Liu Yang2,3, Huang Zhen1, Zhang Sheng4, Wang Junsheng2,3   

  1. (1. Tianjin Beacon Paint & Coatings Industrial Development Co.,Ltd., Tianjin 300280, China; 2. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 3. Tianjin Key Laboratory of Fire Safety Technology, Tianjin 300381, China; 4. College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China)
  • Received:2025-07-22 Revised:2025-09-17 Online:2026-09-15 Published:2026-09-15

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摘要： 针对膨胀型钢结构水性防火涂料炭层强度与耐火性能的提升问题，采用硼/硅陶瓷前驱体和植酸对二氧化钛进行改性，并将其引入以聚磷酸铵、季戊四醇和三聚氰胺为膨胀阻燃体系，以水性环氧乳液及固化剂为成膜物质的涂料中，制备了一系列膨胀炭层强化型防火涂料。研究结果表明，相较于未改性二氧化钛，改性二氧化钛的引入能够提高涂层的黏结强度；随着其占比增加，涂料烧蚀后的残炭量及炭层强度得到改善，但膨胀倍率有所降低。其中，PBSTi/FPC-2样品经甲烷喷枪连续喷烧20 min后，背温仅为266.4 ℃；与未添加改性二氧化钛的防火涂料相比，其热释放速率峰值、总热释放量及总生烟量均有所降低，这归因于改性二氧化钛参与形成了致密连续的膨胀炭层，能够阻隔热量传递，并有效减少可燃气体及烟气颗粒的释放。

关键词: 膨胀型防火涂料, 改性二氧化钛, 隔热, 燃烧性能, 炭层强度

Abstract: Aiming at improving the char layer strength and fire resistance of intumescent waterborne steel-structure fireproof coatings, titanium dioxide was modified with boron/silicon ceramic precursors and phytic acid, and then incorporated into coatings formulated with an ammonium polyphosphate-pentaerythritol-melamine intumescent flame-retardant system and waterborne epoxy emulsion together with curing agent as film-forming substances, yielding a series of intumescent char-reinforced fireproof coatings. The results showed that, compared with unmodified titanium dioxide, the introduction of modified titanium dioxide enhanced the adhesive strength of the coatings. With increasing proportion of the modified titanium dioxide, the residual char yield and char layer strength after ablation were improved, whereas the expansion ratio decreased. Notably, the backside temperature of the PBSTi/FPC-2 sample was only 266.4 ℃ after continuous methane-jet torch ablation for 20 min. In addition, compared with the fireproof coating without modified titanium dioxide, its peak heat release rate, total heat release, and total smoke production were all reduced, which is attributed to the participation of modified titanium dioxide in forming a dense and continuous intumescent char layer that effectively impedes heat transfer and reduces the release of combustible volatiles and smoke particles.

Key words: intumescent fireproof coatings, modified titanium dioxide, thermal insulation, combustion performance, char layer strength