硅酸盐学报

非膨胀型改性海泡石纤维防火涂料的制备及其防火性能

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薛永刚 ¹ , 高金宝 ² , 刘奕岑 ³ , 方云超 ⁴ , 李严 ⁵

硅酸盐学报 | 研究论文 2025,53(3): 666-674

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硅酸盐学报 |研究论文 2025 , 53 (3) : 666 -674

非膨胀型改性海泡石纤维防火涂料的制备及其防火性能

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薛永刚¹, 高金宝², 刘奕岑³, 方云超⁴, 李严⁵

作者信息

^1．河北辰翔实业股份有限公司，石家庄 050500

^2．河北工业职业技术大学计算机技术学院，石家庄 050091

^3．中国地质大学（北京）材料科学与工程学院，北京 100083

^4．北京工业大学材料科学与工程学院，北京 100124

^5．北京金隅涂料有限责任公司，北京 100096

通讯作者:

高金宝（1979—），男，硕士，副教授。

作者简介:

薛永刚（1982—），男，学士，高级工程师。

Modified Seafoam Fibers for Improving Fire Performance of Non-Intumescent Fire Coatings

Yonggang XUE¹, Jinbao GAO², Yicen LIU³, Yunchao FANG⁴, Yan LI⁵

Affiliations

^1.Hebei Chenxiang Industry Co., Ltd., Shijiazhuang 050500, China

^2.School of Computer Technology, Hebei Vocational University of Industry and Technology, Shijiazhuang 050091, China

^3.Materials Science and Engineering, China University of Geosciences Beijing, Beijing 100083, China

^4.Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

^5.BBMG Coatings Co., Ltd., Beijing 100096, China

Corresponding Author:

GAO Jinbao (1979-), male, Master, Associate Professor. E-mail: 675034539@qq.com

XUE Yonggang (1982-), male, Bachelor, Senior Engineer. E-mail: 48245097@qq.com

出版时间: 2025-03-20 doi: 10.14062/j.issn.0454-5648.20240524

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摘要

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近年来，对于钢结构防火涂料中非膨胀型防火涂料的研究主要关注于新型隔热填料的开发。开发具有更低导热系数的隔热填料，形成更加稳定的隔热防火涂层成为目前研究的重点。本工作通过添加水镁石纤维和氧化硅纤维及一些高分子改性剂，制备得到改性海泡石纤维，并将其应用于非膨胀型防火涂料当中，使其具有更慢的升温速率，抗裂性能更高。在防火涂料中添加20%改性海泡石纤维时，其有效防火时间可达185 min，同时具有0.042 MPa的粘结强度和0.461 MPa的抗压强度，与其他防火材料相比，表现出更加出色的防火隔热性能。本工作为非膨胀型防火材料的新型隔热填料提供了新的方案，具有较高的市场应用价值及发展前景。

关键词

海泡石纤维 / 水镁石纤维 / 氧化硅纤维 / 非膨胀型防火涂料 / 钢结构

Abstract

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Introduction

Steel building is a form of construction. Non-intumescent fireproofing materials have superior fireproofing effects and can provide effective fireproofing and thermal insulation protection for steel structures. However, the modification and innovation of non-intumescent fireproofing materials are insufficient in China at present. Seafoam has a good thermal stability and a low thermal conductivity, having a thermal insulation effect, which can be used as a filler for fireproof coating or fireproof board. Seafoam can effectively improve the fire resistance of fireproof coating or fireproof board. Seafoam mineral fibers dispersed in a low concentration solution can form a stable high-viscosity suspension, so they can be dispersed and modified with other fillers and added to fireproof coating or fireproof board slurry. Therefore, the fire performance of seafoam fiber fireproofing materials can be improved. In this work, a modified seafoam fiber was added to fireproof coatings for improving the fire performance of non-intumescent fireproof coatings. This modified fiber as a kind of modified fiber was prepared via mixing seafoam fiber, magnesium hydroxide fiber and silicon oxide fiber under high-speed mixing and adding polymer modifier. In addition, the physical and chemical properties and fire performance of the finished product were also analyzed.

Methods

In this work, 5-70 mm hydromagnesite fibers were ground in a mill to obtain the fibers with the lengths of < 5 mm. Subsequently, 1-5 mm seafoam fibers and 3-6 mm silicon oxide fibers were selected, and 50% seafoam fibers, 30% hydromagnesite fibers, 8% silicon oxide fibers, 5% organic bentonite, 1% polymer water-absorbent resins, 1% starch ether, 5% hydroxypropyl methyl cellulose ether were mixed as raw materials in a dry mixer for 30 min to obtain the modified seafoam fibers. The modified seafoam fibers were analyzed based on the physical phase characterization. Cement, kaolin, modified fiber, and fire protection additives in different weight ratios were added to the dry mixer and stirred for 300 s, and then an expanded vermiculite was added to the mixer and stirred for 120 s, and six groups of fireproofing coating samples were obtained. Afterwards, the samples were then stirred slowly in a cement sand mixer according to a mass ratio of fireproofing coating:707 emulsion: water of 1.0∶0.2∶0.8 and mixed for 5 min to make the mixture homogeneous. After mixing, the fire resistance, bond strength and compressive strength of the samples were characterized.

Results and discussion

Based on the fire resistance test analysis of fireproofing materials doped with six different contents of modified seafoam fibers (i.e., 10%, 12.5%, 15%, 17.5%, 20% and 22.5%), the fireproofing and thermal insulation properties of fireproofing coatings are gradually improved with the increase in the addition of modified seafoam fibers. Their fireproofing and thermal insulation properties enhance with the increase in the doping of modified seafoam fibers, indicating that modified seafoam fibers play a key role in the fireproofing coatings. Seafoam fibers play a key role in fireproof coatings. The fireproof performance is obviously better than that of two commercial fireproof materials. The analysis by X-ray diffraction patterns shows that Mg(OH)₂ is added to the modified seafoam fiber. According to the TG-DTG analysis, Mg(OH)₂ decomposes into MgO during the heat process, and MgO is a kind of superior heat-insulating and insulating material, indicating that the modified seafoam fibers greatly improve the fire-insulating and heat-insulating performance. The FTIR analysis shows that there are a large number of Si—O—Si bonds in the sample, and that there is a large number of Si—O—Si bonds in the sample. There are a lot of Si—O—Si bonds in the sample, so that the modified seafoam fibers maintain its original adsorption and rheological properties. The appearance and morphology of the fireproof coating after combustion show that the silicon oxide fibers improve the crack resistance of the fireproof coating.

Conclusions

In this paper, the modified seafoam fiber was prepared via mixing seafoam fiber, magnesite fiber, silicon oxide fiber and some polymer modifiers in a certain proportion. The modified seafoam fiber had a better fireproofing and thermal insulation performance, the magnesite fiber could further reduce the thermal conductivity of the material, and the silicon oxide fiber could ensure that the fireproofing coating was not easy to crack. To meet the national standards of bonding strength and compressive strength of the basis, the fireproof coating with 20% of the modified seafoam fibers had the optimum fire insulation performance. At the effective fire prevention time of 185 min, the coating had a bonding strength of 0.042 MPa and a compressive strength of 0.461 MPa. Compared with some other commercial fireproofing materials, the coating had a fireproofing effect and some application prospects.

Key words

seafoam fibers / magnesite fibers / silicon oxide fibers / non-intumescent fireproofing coatings / steel structures

引用本文

薛永刚, 高金宝, 刘奕岑, 方云超, 李严. 非膨胀型改性海泡石纤维防火涂料的制备及其防火性能. 硅酸盐学报, 2025 , 53 (3) : 666 -674 . DOI: 10.14062/j.issn.0454-5648.20240524

Yonggang XUE, Jinbao GAO, Yicen LIU, Yunchao FANG, Yan LI. Modified Seafoam Fibers for Improving Fire Performance of Non-Intumescent Fire Coatings[J]. Journal of the Chinese Ceramic Society, 2025 , 53 (3) : 666 -674 . DOI: 10.14062/j.issn.0454-5648.20240524

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2025年第53卷第3期

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文章信息

doi: 10.14062/j.issn.0454-5648.20240524

接收时间：2024-08-11
首发时间：2026-10-22
出版时间：2025-03-20

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收稿日期：2024-08-11
修回日期：2024-09-02

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作者信息

^1．河北辰翔实业股份有限公司，石家庄 050500

^2．河北工业职业技术大学计算机技术学院，石家庄 050091

^3．中国地质大学（北京）材料科学与工程学院，北京 100083

^4．北京工业大学材料科学与工程学院，北京 100124

^5．北京金隅涂料有限责任公司，北京 100096

通讯作者:

高金宝（1979—），男，硕士，副教授。

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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20240524

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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