通过在无机碱激发聚合物体系中引入聚苯乙烯发泡珠粒(EPS),结合碱激发反应及化学发泡工艺,制备出一种高性能有机-无机聚合物复合发泡材料,实现了有机相与无机相的优势互补与协同增效,并分析了影响材料性能的关键因素。结果表明:在无机碱激发聚合物中采用过氧化氢(H₂O₂)作为发泡剂,H₂O₂分解产生的氧气通过气泡成核、气泡生长实现无机聚合物发泡;引入质量分数5% EPS珠粒后,复合发泡材料的导热系数显著降低至0.048W/(m·K),这主要归因于EPS珠粒的超低导热性,同时得益于无机聚合物基体的不燃特性及其对有机组分易燃性的有效抑制,复合发泡材料满足A2级不燃要求。通过协同各影响因素,制备的有机-无机聚合物复合发泡材料兼具高效隔热、A2级不燃、低吸水率、良好力学强度及优异稳定性等综合优势,各项指标符合JG/T 536—2017技术要求。

This study successfully fabricated a high-performance organic-inorganic polymer composite foam through introducing expanded polystyrene (EPS) beads into an alkali-activated inorganic polymer system and combining polycondensation reaction and chemical foaming process.This approach achieved complementary advantages and synergistic effects between the organic and inorganic phases,and the key influencing factors were systematically investigated.Results demonstrated that in inorganic alkali-activated polymers,hydrogen peroxide (H₂O₂) was employed as a foaming agent,with the O₂ gas produced by H₂O₂ decomposition enabling foaming through cell nucleation and cell growth.Upon introducing 5wt.% EPS,the composite foam achieved a significantly reduced thermal conductivity of 0.048W/(m·K),attributed to the low thermal conductivity of EPS.Simultaneously,due to the non-combustible nature of the inorganic polymer matrix and its effective suppression of organic component flammability,the composite foam met the class A2 non-combustibility standard.By synergistically optimizing these factors,the developed organic-inorganic polymer composite foam integrated high-efficiency thermal insulation,Class A2 non-combustibility,low water absorption,good mechanical strength,and excellent stability.All performance metrics complied with the technical requirements of the JG/T 536—2017 standard.