厚型钢结构防火涂料喷涂于钢构件的表面后，遇火时依靠涂层自身的不燃性和低导热性形成耐火隔热保护层，迟缓火势对承重构件的直接侵袭，从而有效提高钢结构的耐火极限。由于厚型钢结构防火涂料具有不腐蚀钢材、不与任何防腐底漆起化学反应、无刺激性气味、涂层质量轻（结构荷载重量相对也轻）、单位涂覆面积大、遇火时不产生烟气、不释放有害气体等特点，因此适用于各种新建、扩建和改建的工业与民用建筑工程中钢结构承重构件的防火涂装及防火保护。
After spraying thick steel structure fireproof coating on the surface of steel components, it relies on the non combustible and low thermal conductivity of the coating itself to form a fire-resistant and thermal insulation protective layer when encountering fire, delaying the direct invasion of the load-bearing components by the fire, thereby effectively improving the fire resistance limit of the steel structure. Due to the characteristics of non corrosion of steel, no chemical reaction with any anti-corrosion primer, no irritating odor, light coating weight (relatively light structural load weight), large unit coating area, no smoke generation when encountering fire, and no release of harmful gases, thick steel structure fireproof coating is suitable for fireproof coating and fire protection of steel structure load-bearing components in various industrial and civil construction projects such as new construction, expansion, and renovation.
厚型钢结构工程防火涂料的施工工艺
Construction technology of fireproof coating for thick steel structural engineering
1、防火涂料涂装前，钢构件表面除锈及防锈底漆涂装应符合设计要求和国家现行有关规范规定，应彻底清除钢构件表面的灰尘、油污等杂物。
1. Before the application of fireproof coating, the rust removal and anti rust primer coating on the surface of steel components should comply with the design requirements and current national regulations. Dust, oil, and other debris on the surface of steel components should be thoroughly removed.
2、防火涂料涂装应在室内装饰之前和不被后续工程所损坏的条件下进行。施工时，对不需要进行防火保护的墙面、门窗、机械设备和其他构件等应进行遮蔽保护。
2. Fireproof coating should be applied before indoor decoration and under conditions that are not damaged by subsequent engineering. During construction, walls, doors and windows, mechanical equipment, and other components that do not require fire protection should be covered and protected.
3、喷涂前刷一遍东安钢结构界面剂，待界面剂表干后采用喷涂或抹涂的方式进行涂装。涂装前，按粉料：乳液=1：1的比例混合搅拌均匀，使之呈无结块稠流体状态。稀稠度应根据涂装方式而定，以方便施工、不流淌、粘结牢固为宜。对于特宽大型钢材应加钢架网，以防涂料脱漏或分离。
3. Before spraying, apply one coat of Dong'an steel structure interface agent. After the surface of the interface agent is dry, apply it by spraying or wiping. Before coating, mix and stir evenly according to the ratio of powder: lotion=1:1 to make it in a non caking viscous fluid state. The viscosity should be determined based on the coating method, in order to facilitate construction, prevent flow, and ensure firm adhesion. For ultra wide and large steel, a steel frame mesh should be added to prevent coating leakage or separation.
4、采用喷涂方式涂装时，用凹凸斗式喷枪，空气压力为0.6～0.8MPa，喷枪口直径宜为6～10mm.喷枪垂直于被涂装构件表面，以40～60cm为宜。
4. When using spray painting method, use a concave convex bucket type spray gun with an air pressure of 0.6-0.8MPa, and the nozzle diameter should be 6-10mm. The spray gun should be perpendicular to the surface of the painted component, preferably 40-60cm.
5、喷涂施工第一遍不亦过厚，待干后再进行下一遍施工，以不流淌为宜，直到达到标准规定厚度。
5. The first layer of spraying construction should not be too thick, and the next layer of construction should be carried out after it is dry, preferably without flowing, until the standard specified thickness is reached.
6、采用抹涂方式涂装防火涂料的涂装方法与抹水泥的方法基本一致。
6. The coating method of applying fire-resistant coatings using the brushing method is basically the same as that of applying cement.