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<p>In order to solve the shortcomings of existing gel foams, such as poor stability, low strength, and weak water retention capacity, this paper first determined the concentration ranges of the gelling agent and cross-linking agent by referring to other relevant literature and preliminary experiments. Furthermore, the optimal ratio of each component was determined through compounding experiments with foam stabilizers and response surface analysis. Finally, a new high-stability fire-fighting gel foam for mining applications was prepared and its properties were experimentally investigated. The results show that the optimal ratios of gelling agent (CMC), cross-linking agent (aluminum citrate), foam stabilizer (GG:XG = 1:1), and composite foaming agent (SDS:AES = 1:1) of CMC-GG-XG gel foam are: 1.5 ~ 1.6%, 4 ~ 5%, 0.35 ~ 0.4%, and 0.7 ~ 0.8%, respectively. Gel foams prepared outside this ratio range have the problem of not being able to gel or having poor stability after gelation. Compared with ordinary foams and gel foams without adding foam stabilizers, the bubble structure of CMC-GG-XG gel foam changes slowly, and the bubble diameter distribution is concentrated. The water retention rate of CMC-GG-XG gel foam is 26.9% higher than that of gel foam without foam stabilizer when heated at 100&#xa0;℃ for 10&#xa0;h. The viscosity of CMC-GG-XG gel foam changes slowly with temperature, and it can maintain a relatively high viscosity for a long time. CMC-GG-XG gel foam can form a dense three-dimensional network structure and cover the coal surface for a long time. The results of this study support the achievement of stable and efficient fireproof performance of gel foam.</p>

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Experimental study on the preparation and characterization of CMC-GG-XG high-stability gel foam

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Jun Xie,
  • Linjun Yin,
  • Dawei Chen,
  • Yanan Shi,
  • Yi Wang

摘要

In order to solve the shortcomings of existing gel foams, such as poor stability, low strength, and weak water retention capacity, this paper first determined the concentration ranges of the gelling agent and cross-linking agent by referring to other relevant literature and preliminary experiments. Furthermore, the optimal ratio of each component was determined through compounding experiments with foam stabilizers and response surface analysis. Finally, a new high-stability fire-fighting gel foam for mining applications was prepared and its properties were experimentally investigated. The results show that the optimal ratios of gelling agent (CMC), cross-linking agent (aluminum citrate), foam stabilizer (GG:XG = 1:1), and composite foaming agent (SDS:AES = 1:1) of CMC-GG-XG gel foam are: 1.5 ~ 1.6%, 4 ~ 5%, 0.35 ~ 0.4%, and 0.7 ~ 0.8%, respectively. Gel foams prepared outside this ratio range have the problem of not being able to gel or having poor stability after gelation. Compared with ordinary foams and gel foams without adding foam stabilizers, the bubble structure of CMC-GG-XG gel foam changes slowly, and the bubble diameter distribution is concentrated. The water retention rate of CMC-GG-XG gel foam is 26.9% higher than that of gel foam without foam stabilizer when heated at 100 ℃ for 10 h. The viscosity of CMC-GG-XG gel foam changes slowly with temperature, and it can maintain a relatively high viscosity for a long time. CMC-GG-XG gel foam can form a dense three-dimensional network structure and cover the coal surface for a long time. The results of this study support the achievement of stable and efficient fireproof performance of gel foam.