基于mof的高热稳定性阻燃系统，用于防火和抑制毒性的硬质聚氨酯泡沫

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-04-19 DOI:10.1016/j.conbuildmat.2025.141382

Gang Tang , Mengfan Guan , Sujie Yang , Yuan Fang , Xiuyu Liu , Kang Dai , Wei Wang

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引用次数: 0

摘要

由于热稳定性和机械强度较低，金属有机框架（MOF）作为有前途的阻燃剂在聚合物应用中受到限制。为了应对这些挑战，我们利用生物质改性钢渣（PSS）开发了一种高热稳定性的 MOF 阻燃剂体系，旨在增强硬质聚氨酯泡沫（RPUF）的热稳定性、阻燃性和毒性抑制性能。当与聚磷酸铵结合使用时，MOF 阻燃剂系统可显著提高 RPUF 的阻燃性，达到 UL-94 V-0 等级。锥形量热仪测试表明，与纯 RPUF 相比，RPUF/APP/MOF、RPUF/APP/PSS 和 RPUF/APP/PSS@MOF 的总放热值分别降低了 22.8%、25.1% 和 24.5%，突出表明了它们在减轻热危害方面的功效。值得注意的是，RPUF/APP/PSS@MOF 在燃烧后期排放的二氧化碳最少。通过分子动力学建模和模拟，对 MOF 和 PSS@MOF 的 CO 吸附能力进行了分析和验证。虽然 MOF 因其独特的多孔结构而表现出良好的 CO 吸附能力，但 PSS@MOF 在有毒气体吸附方面明显优于 MOF。这一发现与锥形量热计测试结果相吻合，证实了 PSS@MOF 在减少燃烧过程中有毒气体排放方面的卓越功效。这项研究强调了将生物质改性钢渣与 MOF 材料相结合的巨大阻燃潜力，促进了工业废物的高效回收利用，并显著提高了 MOF 的阻燃和抑毒能力。这些发现为开发可持续、高效和高价值的阻燃剂铺平了新的道路，在提高聚合物复合材料阻燃性能的同时，也解决了环境可持续发展的挑战。

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Highly thermally stable MOF-based flame retardant system for fire-safe and toxicity-suppressing rigid polyurethane foam

Metal-organic frameworks (MOF) as promising flame retardants are constrained in polymer applications due to their low thermal stability and mechanical strength. To tackle these challenges, biomass-modified steel slag (PSS) was utilized to develop a highly thermally stable MOF-based flame retardant system, designed to enhance the thermal stability, flame retardancy, and toxicity suppression properties of rigid polyurethane foam (RPUF). When combined with ammonium polyphosphate, the MOF flame retardant system significantly enhances the flame retardancy of RPUF, achieving the UL-94 V-0 rating. Cone calorimeter tests revealed that compared to pure RPUF, the total heat release values of RPUF/APP/MOF, RPUF/APP/PSS, and RPUF/APP/PSS@MOF decreased by 22.8 %, 25.1 %, and 24.5 %, respectively, highlighting their effectiveness in mitigating thermal hazards. Notably, RPUF/APP/PSS@MOF emitted the least CO during the later stages of combustion. The CO adsorption capabilities of MOF and PSS@MOF were analyzed and validated through molecular dynamics modeling and simulations. While MOF demonstrated good CO adsorption capacity due to its distinctive porous structure, PSS@MOF obviously outperformed MOF in toxic gas adsorption. This finding aligns with cone calorimeter test results, confirming its superior effectiveness in reducing toxic emissions during combustion. This study underscores the significant flame-retardant potential of combining biomass-modified steel slag with MOF materials, promoting efficient recycling of industrial waste and significantly enhancing the flame-retardant and toxicity-inhibiting capabilities of MOF. These findings pave new ways for developing sustainable, efficient, and high-value flame retardants, enhancing the fire resistance of polymer composites while addressing environmental sustainability challenges.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.