防火巖棉板的防火性能源于材料構(gòu)成與結(jié)構(gòu)設(shè)計(jì)的協(xié)同作用，這種以天然礦石為原料的無機(jī)板材，通過多重機(jī)制阻斷火勢(shì)蔓延，是建筑消防安全的重要保障。

　　The fire resistance of fire-resistant rock wool board lies in the synergistic effect of material composition and structural design. This inorganic board made from natural ore blocks the spread of fire through multiple mechanisms, which is an important guarantee for building fire safety.

　　材料構(gòu)成的不燃性基礎(chǔ)

　　Non combustible basis composed of materials

　　防火巖棉板以玄武巖、輝綠巖等天然火成巖為核心原料，這些礦石富含二氧化硅、氧化鋁等無機(jī)氧化物，熔融溫度達(dá) 1500℃以上，遠(yuǎn)超一般建筑火災(zāi) 800-1200℃的溫度范圍。生產(chǎn)時(shí)，原料經(jīng) 1400-1600℃高溫熔融后制成直徑 5-10 微米的纖維，保留了原料的無機(jī)特性，自身不具備可燃性。

　　Fireproof rock wool board is made from natural igneous rocks such as basalt and diabase, which are rich in inorganic oxides such as silica and alumina. The melting temperature can reach over 1500 ℃, far exceeding the temperature range of 800-1200 ℃ for general building fires. During production, the raw materials are melted at a high temperature of 1400-1600 ℃ to produce fibers with a diameter of 5-10 microns, retaining the inorganic properties of the raw materials and not possessing flammability.

　　與有機(jī)保溫材料不同，防火巖棉板不含可燃成分，高溫下不會(huì)分解產(chǎn)生易燃?xì)怏w，僅會(huì)熔融軟化而不發(fā)生明火燃燒。這種源于材料本質(zhì)的不燃性，使其成為 A 級(jí)不燃材料，奠定了防火功能的根本基礎(chǔ)。

　　Unlike organic insulation materials, fireproof rock wool board does not contain flammable components and will not decompose to produce flammable gases at high temperatures. It will only melt and soften without burning with an open flame. This inherent non flammability of the material makes it an A-level non combustible material, laying the fundamental foundation for its fire resistance function.

　　纖維結(jié)構(gòu)的隔熱阻火機(jī)制

　　Thermal insulation and fire resistance mechanism of fiber structure

　　多孔纖維結(jié)構(gòu)是其隔熱防火的關(guān)鍵。熔融纖維經(jīng)交織成網(wǎng)，形成大量 50-200 微米的空氣孔隙，這些被纖維分隔的獨(dú)立空間構(gòu)成高效隔熱屏障。空氣與纖維的低導(dǎo)熱系數(shù)結(jié)合，使巖棉板整體導(dǎo)熱系數(shù)低至 0.035-0.045W/(mK)，有效阻斷熱量傳遞。

　　The porous fiber structure is the key to its thermal insulation and fire prevention. Molten fibers are interwoven into a network, forming a large number of air pores ranging from 50-200 microns. These independent spaces separated by fibers form an efficient thermal barrier. The combination of low thermal conductivity of air and fibers reduces the overall thermal conductivity of rock wool board to 0.035-0.045W/(mK), effectively blocking heat transfer.

　　火災(zāi)中，這種結(jié)構(gòu)通過三重機(jī)制作用：纖維骨架阻擋火焰直接穿透，空氣孔隙限制熱對(duì)流，纖維高溫穩(wěn)定性維持結(jié)構(gòu)完整。50mm 厚的巖棉板可將 1000℃火焰溫度降至背面 300℃以下，為救援爭(zhēng)取時(shí)間。

　　In a fire, this structure works through a triple mechanism: the fiber skeleton blocks direct flame penetration, air pores limit heat convection, and the fiber maintains structural integrity at high temperatures. A 50mm thick rock wool board can lower the flame temperature from 1000 ℃ to below 300 ℃ on the back, buying time for rescue efforts.

　　煙氣控制與結(jié)構(gòu)防護(hù)

　　Smoke control and structural protection

　　防火巖棉板的無機(jī)成分在高溫下不分解，不會(huì)釋放甲醛、苯系物等有毒氣體，減少煙氣危害。相比之下，有機(jī)材料燃燒產(chǎn)生的煙氣是火災(zāi)傷亡主因，巖棉板能顯著改善火場(chǎng)環(huán)境。

　　The inorganic components of fire-resistant rock wool board do not decompose at high temperatures and do not release toxic gases such as formaldehyde and benzene, reducing the harm of smoke. In contrast, the smoke generated by the combustion of organic materials is the main cause of fire casualties, and rock wool board can significantly improve the fire environment.

　　對(duì)建筑結(jié)構(gòu)而言，它通過延緩鋼結(jié)構(gòu)升溫發(fā)揮保護(hù)作用。鋼結(jié)構(gòu)在 500℃以上強(qiáng)度驟降，100mm 厚巖棉板可將其耐火極限提升至 1.5 小時(shí)以上，滿足多數(shù)建筑防火標(biāo)準(zhǔn)。在墻體、樓板中，巖棉板夾芯構(gòu)造能阻止火焰穿透，控制火災(zāi)蔓延。

　　For building structures, it plays a protective role by delaying the temperature rise of steel structures. The strength of steel structures drops sharply above 500 ℃, and 100mm thick rock wool boards can increase their fire resistance limit to over 1.5 hours, meeting most building fire prevention standards. In walls and floors, the rock wool sandwich structure can prevent flame penetration and control the spread of fire.

　　增強(qiáng)設(shè)計(jì)與應(yīng)用邏輯

　　Enhance design and application logic

　　部分產(chǎn)品添加氫氧化鎂等無機(jī)阻燃劑，高溫下分解吸熱并釋放水汽稀釋氧氣，提升防火效能。高密度型號(hào)（≥120kg/m）結(jié)構(gòu)穩(wěn)定，適合防火墻等關(guān)鍵部位，表面復(fù)合防火涂層或鋁箔貼面可進(jìn)一步增強(qiáng)防護(hù)。

　　Some products are added with inorganic flame retardants such as magnesium hydroxide, which decompose and absorb heat at high temperatures, releasing water vapor to dilute oxygen and enhance fire resistance. High density models (≥ 120kg/m) have stable structures and are suitable for critical areas such as firewalls. The surface is coated with composite fire-resistant coatings or aluminum foil veneers to further enhance protection.

　　實(shí)際應(yīng)用中，外墻保溫系統(tǒng)利用其不燃性阻斷火焰蔓延，吊頂夾層中形成水平防火分隔帶。人員密集場(chǎng)所應(yīng)用側(cè)重延緩火勢(shì)，為疏散創(chuàng)造條件；工業(yè)建筑中則用于設(shè)備防火包裹，降低火災(zāi)風(fēng)險(xiǎn)。

　　In practical applications, the external wall insulation system uses its non flammability to block the spread of flames, forming a horizontal fireproof partition in the ceiling interlayer. The application in densely populated areas focuses on slowing down the fire and creating conditions for evacuation; In industrial buildings, it is used for fire-resistant packaging of equipment to reduce the risk of fire.

　　防火巖棉板的防火原理是材料本質(zhì)、結(jié)構(gòu)特性與工藝設(shè)計(jì)的協(xié)同結(jié)果，平衡保溫與防火需求，在建筑安全體系中不可或缺，其性能還將隨技術(shù)升級(jí)持續(xù)提升。

　　The fire prevention principle of fireproof rock wool board is the collaborative result of material essence, structural characteristics, and process design, balancing insulation and fire prevention requirements. It is indispensable in the building safety system, and its performance will continue to improve with technological upgrades.

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