| 摘要: |
| 构建了聚苯乙烯泡沫颗粒与玻化微珠二级级配模型，得出聚苯乙烯泡沫颗粒与玻化微珠的最佳粒径比约为5∶2，体积比约为100∶7.根据级配模型配制骨料，采用模压成型工艺制备复合防火聚苯板，显微结构显示其骨料堆积紧密、有序.分析了硅酸盐胶凝材料、SiO2气凝胶及憎水剂对复合防火聚苯板性能的影响.结果表明：复合防火聚苯板的阻燃性能及拉拔强度随着硅酸盐胶凝材料掺量的增加而增大；导热系数和拉拔强度随着SiO2气凝胶掺量的增加而降低，软化系数随着SiO2气凝胶掺量的增加而升高；吸水率随着憎水剂掺量的增加而降低. |
| 关键词: 复合防火聚苯板 聚苯乙烯泡沫颗粒 SiO2气凝胶 燃烧总热值 级配模型 |
| DOI：10.3969/j.issn.1007-9629.2024.09.008 |
| 分类号:TQ325.2 |
| 基金项目:全国建材行业第二批重大科技攻关揭榜挂帅项目（202201JBGS18-01） |
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| Preparation and Performance of SiO2 Aerogel-Modified Composite Fire-Resistant Polystyrene Foam Board |
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PENG Yuefei, YANG Penghui, YANG Chen
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Fujian Key Laboratory of Architectural Coating， Skshu Paint Co.， Ltd.， Putian 351100， China
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| Abstract: |
| A binary gradation model of polystyrene foam particles and glass beads was constructed， and the optimal particle size gradation of polystyrene foam particles and glass beads was about 5∶2 and the volume ratio was about 100∶7. Based on the gradation model， the aggregate was prepared and the composite fire-resistant polystyrene foam boards were fabricated using molding process. The microstructure diagrams revealed that the aggregate stacked up in a dense and well-organized arrangement. An analysis was conducted to investigate the influence of silicate cementitious material， SiO2 aerogel， and hydrophobic agent on the performance of the composite fire-resistant polystyrene foam board. The results indicate that an increase in the content of silicate cementitious material enhances the fire resistance and tensile strength of the composite fire-resistant polystyrene foam board. Conversely， an increase in SiO2 aerogel content results in a reduction of thermal conductivity and tensile strength， accompanied by an increase in the softening coefficient. Additionally， the water absorption rate decreases with an increase in the content of the hydrophobic agent. |
| Key words: fire-resistant composite polystyrene foam board polystyrene foam particle SiO2 aerogel total calorific value of combustion gradation model |
