High weather resistance environment-friendly cable fire-refractory coating and preparation process thereof

Abstract

The invention discloses high weather resistance environment-friendly cable fire-refractory coating and a preparation process thereof, belonging to the technical field of coating. The process adopts a base material, namely acrylic ester elastic emulsion, as a main film-forming substance, dopes high polymerization degree ammonium polyphosphate into the base material, has good film-forming effect and water resistance. The method particularly selects Number 70 chlorcosane and diantimony trioxide as synergistic flame-retardant to greatly improve the fire retardant performance, has low proportion of pigment and the base material, optimizes compatibility of a fire retardant system; the coating has weather resistance and has oil resistance for selecting fluorocarbon surfactant. The process improves water resistance and weather resistance of the coating, and adopts titanate coupling agent to improve the combining firmness of the pigment, the base material and cable base materials, and the weather resistance of the coating is further improved. Green and environment-friendly water is used as solvent to reduce cost, and as the solvent is removed in preparation or construction, the coating does not pollute the environment and not hurt the health of operators.

Description

technical field [0001] The invention relates to a water-based cable fireproof coating and a preparation process, belonging to the technical field of coatings. Background technique [0002] Electricity is the main energy source in contemporary society. Electricity transmission is inseparable from wires and cables. Since the sheath and insulation layer of wires and cables are generally made of plastic or rubber materials, they are flammable. Therefore, when the cable is overloaded, short-circuited, Local overheating and other fault states or external heat will cause fire accidents. Therefore, in places where cables are densely populated, there is a huge fire hazard. Once a fire occurs, the fire will spread along the cable, causing major economic losses. loss. The function mechanism of the cable fire retardant coating is that the coating film expands and foams when it encounters fire, forming a carbon foam insulation layer, sealing the protected cable, preventing the spread of...

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Problems solved by technology

[0004] 1. The solid content of the paint is low, only 50%, that is to say, 50% of the organic solvent will be completely volatilized. On the one hand, it will pollute the air environment, and on the other hand, it will seriously endanger the health of the paint preparation workers and construction personnel during the production and construction process. healthy;

[0005] 2. Especially in the construction process of narrow spaces or poor ventilation conditions such as cable shafts, cable trenches, and cable tunnels, due to poor ventilation, it is difficult for construction personnel to continue construction, which will affect the construction progress of the project; The statement has a deeper degree of harm;

[0006] 3. Due to the flammability of the solvent, the fire hazard is quite large during the construction stage and the coating drying period, and the seriousness of the fire hazard is aggravated during high-temperature construction operations. Only when the fire-resistant coating is completely dry, there is no fire hazard;

[0008] 1) The water resistance and oil resistance of the coating are poor, and the coating is easy to crack when it encounters oil during construction in a humid environment or during construction;

[0009] 2) Due to the large proportion of the fire-resistant and flame-retardant system of the coating and the high pigment-base ratio, the weather resistance of the coating is poor;

[0010] 3) Ordinary ammonium polyphosphate (crystal I type) has a low degree of polymerization, is slightly soluble in water, and has a low pH value, which affects the film formation of the coating, especially leading to poor fire performance and attenuation of fire performance;

[0011] 4) The solid content of the paint is low, and the construction efficiency is low, which affects the progress of the project

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