Solvent-free epoxy intumescent fireproof coating and preparation method thereof

A kind of technology of fireproof coating and expansion type, applied in the direction of fireproof coating, epoxy resin coating, anticorrosion coating, etc., can solve the problems of loss of practical applicability of fireproof coating, easy hydrolysis, etc., achieve excellent fire resistance reliability, excellent moisture and heat resistance, The effect of improving compatibility

Pending Publication Date: 2022-04-12
广东腐蚀科学与技术创新研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the most commonly used carbon forming agent is mainly pentaerythritol, but it has the problem of easy hydrolysis, and it will gradually lose during the use of fire retardant coatings, which will affect the practical applicability of fire retardant coatings.

Method used

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  • Solvent-free epoxy intumescent fireproof coating and preparation method thereof
  • Solvent-free epoxy intumescent fireproof coating and preparation method thereof
  • Solvent-free epoxy intumescent fireproof coating and preparation method thereof

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Embodiment 1

[0060] In the present embodiment, the preparation method of chlorinated paraffin-coated pentaerythritol is as follows:

[0061] (1) Put a specified amount of chlorinated paraffin CP-70 (20% by mass) into propylene glycol butyl ether and ExxsolD30 mass ratio 1:1 mixed solvent (80% by mass) under the stirring condition of 300rpm speed, Stir until the chlorinated paraffin is completely dissolved to obtain a chlorinated paraffin solution with a mass fraction of 20%.

[0062] (2) Put the pentaerythritol powder of the formula amount into the chlorinated paraffin solution with a mass fraction of 20% under the stirring condition of 500rpm, then increase the speed to 1800rpm and stir for 30 minutes until the mixture is uniform.

[0063] (3) The obtained mixture was rotary evaporated at 60° C. to remove the mixed solvent and placed in an oven for thorough drying to obtain an evaporation residue, namely: a mixture of pentaerythritol coated with chlorinated paraffin.

[0064] (4) Grindin...

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Abstract

The invention relates to a solvent-free epoxy intumescent fireproof coating and a preparation method thereof, and belongs to the field of coatings. The component A of the solvent-free epoxy intumescent fireproof coating is prepared from the following components in parts by mass: 10 to 30 parts of epoxy resin, 5 to 15 parts of diluent, 0.3 to 0.8 part of defoaming agent, 0.1 to 3 parts of adhesion promoter, 5 to 20 parts of chlorinated paraffin coated pentaerythritol, 20 to 40 parts of acid donor, 6 to 15 parts of inorganic nano filler, 1 to 6 parts of reinforced fiber and 0.1 to 1 part of rheological agent; the component B is an epoxy curing agent, and the component A and the component B are uniformly mixed for use. The chlorinated paraffin coated pentaerythritol prepared by the preparation method disclosed by the invention improves the hydrolysis resistance and thermal stability of pentaerythritol, is excellent in humidity and heat resistance when being applied to a solvent-free epoxy intumescent fireproof coating, and can be widely applied to fireproof protection of indoor and outdoor steel structures; and meanwhile, the cable has excellent fire-resistant reliability, corrosion resistance and excellent mechanical properties.

Description

technical field [0001] The invention relates to a solvent-free epoxy expansion type fireproof coating and a preparation method thereof, belonging to the field of functional coatings. Background technique [0002] Intumescent steel structure fireproof coating is a functional coating suitable for fire protection of large indoor and outdoor steel structures. It will expand to form a carbon layer with low thermal conductivity after being exposed to fire, which can prevent steel from losing its mechanical properties due to excessive heating in the fire field. The strength causes the building to collapse, thus giving the building time to safely evacuate the crowd and fire fighting after a fire breaks out. [0003] Intumescent steel structure fire retardant coating, its typical active ingredients are film formers, carbon formers, acid donors, and gas donors, among which the char formers are mainly hydrocarbons, which can react with acids and dehydrate to form char at high temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/18C09D5/08
Inventor 刘福春韩恩厚
Owner 广东腐蚀科学与技术创新研究院
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