Inorganic fire blocking materials, also known as quick-setting fire blocking materials, are based on fast-drying adhesives, adding fireproofing agents, refractory materials, etc. This product has a good effect on plugging of pipes or wires and cables, especially for larger holes and holes between floors. It not only meets the required fire limit, but also has a very high mechanical strength, which is almost the same as the stiffness of the floor cement board.
Fire retardant bag is made of non-combustible or flame-retardant fiber cloth to fix the refractory material into a variety of package-like bodies, which can be piled into various forms of walls during construction, and can block large holes and play a role. Thermal insulation effect.
Development method:
1. Development of organic fire blocking materials For the development of organic fire blocking materials, we can consider from two aspects. First, choose the base material (resin) from the perspective of physical and chemical properties; second, select the flame retardant from the perspective of fire protection.
(1) The choice of resin. In addition to the high efficiency fireproofing and thermal insulation properties and good physical and chemical properties, organic fireproofing and blocking materials are also required to have high flexibility in order to adapt to various deformation displacements of joints, as well as weather resistance and water resistance. Corrosion and non-hard brittle, etc., and thus the resin used for blocking is one of the key components. The choice of resin not only determines the physicochemical properties of the plugging material, but also directly affects the fireproofing and insulating effect of the plugging material. Experiments have shown that epoxy resins, highly oxidized polyethylene resins, silicone resins, and neoprene can be selected objects. These resins have low glass transition temperatures, good flexibility at normal and low temperatures, and good heat resistance and good adhesion. The use of these resins and reasonable with other components made of organic fire blocking material, the physical and chemical properties and fire performance to meet the requirements.
(2) The choice of flame retardant. Flame retardant is another key component of the fire blocking material, which has a great influence on the fireproof and thermal insulation properties of the blocking material. The selected flame retardant must interact with other components in the plugging material, so that the plugging material has excellent physical and chemical properties, and forms a dense thermal insulation layer when subjected to fire, and has a good thermal insulation effect. By examining the performance of some flame retardants, we believe that the use of phosphorus, calcium and aluminum composite flame retardant is better. The experiment found that the amount of flame retardant has a great influence on the overall performance of the blocking material. If the amount of flame retardant is too large, the heat insulation and blocking effect is good, but the physical and chemical properties of the blocking material are affected; if the amount of flame retardant is too small The physical and chemical properties are good, but the insulation effect is poor.
(3) The composition of organic blocking materials. When the binder (resin) and flame retardant are determined, the corresponding fillers, auxiliaries, etc., can be used to obtain the basic formulation of the organic blocking material. We used orthogonal test methods to screen and optimize formulas, and finally determined the preferred formula for organic blocking materials. The organic fire blocking material was sampled by the Hubei Fire Fighting Corps and sent to the National Fireproof Material Inspection Center for testing. The fire resistance limit was up to one class, and each physical and chemical performance index met the requirements of the standard for organic fire blocking materials.
Fire retardant bag is made of non-combustible or flame-retardant fiber cloth to fix the refractory material into a variety of package-like bodies, which can be piled into various forms of walls during construction, and can block large holes and play a role. Thermal insulation effect.
Development method:
1. Development of organic fire blocking materials For the development of organic fire blocking materials, we can consider from two aspects. First, choose the base material (resin) from the perspective of physical and chemical properties; second, select the flame retardant from the perspective of fire protection.
(1) The choice of resin. In addition to the high efficiency fireproofing and thermal insulation properties and good physical and chemical properties, organic fireproofing and blocking materials are also required to have high flexibility in order to adapt to various deformation displacements of joints, as well as weather resistance and water resistance. Corrosion and non-hard brittle, etc., and thus the resin used for blocking is one of the key components. The choice of resin not only determines the physicochemical properties of the plugging material, but also directly affects the fireproofing and insulating effect of the plugging material. Experiments have shown that epoxy resins, highly oxidized polyethylene resins, silicone resins, and neoprene can be selected objects. These resins have low glass transition temperatures, good flexibility at normal and low temperatures, and good heat resistance and good adhesion. The use of these resins and reasonable with other components made of organic fire blocking material, the physical and chemical properties and fire performance to meet the requirements.
(2) The choice of flame retardant. Flame retardant is another key component of the fire blocking material, which has a great influence on the fireproof and thermal insulation properties of the blocking material. The selected flame retardant must interact with other components in the plugging material, so that the plugging material has excellent physical and chemical properties, and forms a dense thermal insulation layer when subjected to fire, and has a good thermal insulation effect. By examining the performance of some flame retardants, we believe that the use of phosphorus, calcium and aluminum composite flame retardant is better. The experiment found that the amount of flame retardant has a great influence on the overall performance of the blocking material. If the amount of flame retardant is too large, the heat insulation and blocking effect is good, but the physical and chemical properties of the blocking material are affected; if the amount of flame retardant is too small The physical and chemical properties are good, but the insulation effect is poor.
(3) The composition of organic blocking materials. When the binder (resin) and flame retardant are determined, the corresponding fillers, auxiliaries, etc., can be used to obtain the basic formulation of the organic blocking material. We used orthogonal test methods to screen and optimize formulas, and finally determined the preferred formula for organic blocking materials. The organic fire blocking material was sampled by the Hubei Fire Fighting Corps and sent to the National Fireproof Material Inspection Center for testing. The fire resistance limit was up to one class, and each physical and chemical performance index met the requirements of the standard for organic fire blocking materials.
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