A fireproof and thermal insulation coating

Abstract

The invention provides a fireproof heat insulation coating. The coating mainly comprises, by mass, 15-30 parts of an inorganic nanometer composite adhesive, 5-10 parts of meerschaum, 10-15 parts of a hollow ceramic microsphere, 18-25 parts of nanometer silicon aerosol, 15-22 parts of nanometer ceramic fiber, 4-8 parts of rare earth, 1-2 parts of an assistant and 10-15 parts of water. The fireproof limit reaches 4h when a coat layer with the thickness of 24mm and of the fireproof heat insulation coating accords with a GB14907-2002 steel structure fireproof heat insulation coating; the heat conduction coefficient is below 0.030W / (m.K), so the coating is a novel heat insulation material for oil tanks, and can realize an energy saving effect; the liner expansion coefficient of the coating is large, so products coated with the coating have stable non-cracking and non-shedding mechanical properties under alternated cooling and heating conditions; and the coating can resist shock waves generated in the blasting process when a fire hazard occurs in order to avoid destroys of a paint film.

Description

technical field [0001] The present invention relates to coatings. Background technique [0002] Oil storage tanks and pipelines in the oil field have a fast heating rate when a fire occurs, which is prone to explosion, and a large shock wave can be generated when the explosion occurs. In view of this situation, the currently used fire retardant coatings are mostly outdoor thick fire retardant coatings. The fire limit standard is set at 2 hours. The fire limit of this type of fire-proof thermal insulation coating on the market is up to 3 hours. For oilfield fire extinguishing with complex forms and difficult to extinguish characteristics, the fire limit of 3 hours is not enough. Oil storage tanks and pipelines in oil fields have a certain temperature. The temperature difference between winter and summer is large, and the coefficient of linear expansion is large. Therefore, the fire retardant paint painted on the surface is easy to crack and fall off. The difficulty of constr...

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Problems solved by technology

[0002] When oil storage tanks and pipelines are on fire, the temperature rises quickly and is prone to explosion, which can generate a large shock wave. In view of this situation, most of the fire retardant coatings currently used are outdoor thick fire retardant coatings. At present, this kind of fire retardant coatings The fire limit standard is set at 2 hours. The maximum fire limit of this type of fireproof and thermal insulation coatings sold on the market is 3 hours. For oil field fire extinguishing forms, which are difficult to extinguish, the fire limit of 3 hours is not enough.

The oil storage tanks and pipelines in the oil field have a certain temperature, the temperature difference between winter and summer is large, and the coefficient of linear expansion is large, so the fireproof coating painted on the surface is easy to crack and fall off. The difficulty of construction, for the complex structure of oil field storage tanks and pipelines, the hanging net is even more difficult to construct

The oil storage tanks and pipelines in the oil field need to be insulated, and the inner layer of the ordinary fireproof coating should be insulated, which increases the construction process and increases the cost

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