Recommended dosage 1-5%, can be used for vacuum plating, UV adhesive, UV metal, glass coating, etc. to improve the adhesion to the substrate.
To determine the types of flame retardants and flame retardant additives, based on the experience of research work, the flame retardant additives generally selected for intumescent fire protection systems are starch, wax emulsion structure, diammonium hydrogen phosphate, urea, dicyandiamide, aluminum dihydrogen phosphate, and glycerol , Triethanolamine, phosphate esters and liquid chlorinated paraffins, etc.
Some of these flame retardant additives can also function as curing agents, and some can also function as plasticizers. After the types of flame retardants and flame retardant additives are determined, the determination of the amount of flame retardants and various additives is carried out. First, screen out the sunburning agents and flame retardant additives that affect the transparency of the coating as little as possible. On this basis, according to the physical and chemical properties of flame retardants and additives, analyze their structure and possible existence between them and the base material. For some chemical reactions, the reaction conditions are controlled according to their maximum solubility in the base material to optimize the transparency of the coating.
The choice of flame retardant for non-intumescent fire-retardant coatings should be high-efficiency heat insulation aggregates, flame retardants of lightweight materials, etc., such as calcium carbonate fire-retardant additives can thicken and thicken the coating of non-intumescent fire-retardant coatings. The effect of filling and leveling makes this type of coating have the advantages of light bulk density, low thermal conductivity, good fire resistance, odorless, non-toxic, and water resistance.
Therefore, light calcium carbonate is usually added to the thick-coated fire-retardant coating to reduce the dry density of the fire-retardant coating, as a filler and reinforcing material, and act as a skeleton, flame retardant and extender pigment. In the tunnel fireproof coating, the selected flame retardant additives must not only be able to organically cooperate with the base material to make it have ideal fire and heat insulation, but also improve the weather resistance, water resistance and other physical and chemical properties of the coating, which is suitable for the environmental conditions in the tunnel. . There are many types of flame retardants that can be used in tunnel fireproof coatings. According to our experience, the generally selected flame retardants are aluminum hydride, borides containing crystal water, zinc compounds, etc., which have better effects, and they can also be cured The role of the agent.
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