Inorganic monocomponent fire-retardant coating in steel structure and preparation method

A fire retardant coating, one-component technology, applied in the direction of fire retardant coatings, coatings, etc., can solve the problems of large bulk volume, short fire resistance time, slow drying, etc., and achieve the effect of low density, good fire resistance and heat insulation performance, and fast drying.

Inactive Publication Date: 2006-07-19
北京中核北研科技发展股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesive is made of materials such as cement, gypsum, polyvinyl alcohol and cellulose, which have problems such as short storage period, easy to be damp and expired, aging, etc., and will produce harmful substances when heated; at the same time, the coating is thick, easy to crack and fall off, slow to dry, easy to Major, short fire-resistant time, environmental pollution and other problems, it is a two-component, production, storage, transportation, construction is more inconvenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 110kg of 80-100 mesh expanded vermiculite and 90kg of hollow microbeads in a mixer to make a lightweight heat-insulating aggregate;

[0023] Grind 125kg of gibbsite and 75kg of Guangxi clay in a ball mill evenly to 150 mesh to prepare a fireproof adhesive;

[0024] Grind 65kg of dolomite powder and 35kg of zeolite powder in a ball mill evenly to 150 mesh to prepare additives, and then prepare fireproof coatings:

[0025] Put 100kg of fireproof fiber, 100kg of fireproof adhesive, 50kg of additive, 150kg of lightweight heat-insulating aggregate, and 100kg of fireproof adhesive into the mixing machine in sequence, and stir while adding materials to make 500kg finished product.

[0026] The prepared paint is mixed into a uniform thick fluid according to the ratio of paint: water = 1:1-1.2, and sprayed or coated on the surface of the steel structure. After testing, the paint has the following performance indicators:

[0027] Drying time 3h; bonding strength 0.96MPa; compress...

Embodiment 2

[0029] Mix 100kg of 80-100 mesh expanded vermiculite and 100kg of hollow microbeads in a mixer to make a lightweight heat-insulating aggregate;

[0030] Grind 165kg of gibbsite and 135kg of Guangxi clay in a ball mill evenly to 150 mesh to prepare a fireproof adhesive;

[0031] Add 55kg of dolomite powder and 45kg of zeolite powder in a ball mill to be evenly ground to 150 mesh to prepare additives, and then prepare various fireproof coatings:

[0032] Put 75kg of fireproof fiber, 112kg of fireproof adhesive, 25kg of additives, 175kg of lightweight heat-insulating aggregate, and 113kg of fireproof adhesive into the mixer (stir while adding materials) and stir together to obtain 500kg finished product.

[0033] The prepared paint is mixed into a uniform thick fluid according to the ratio of paint: water = 1:1-1.2, and sprayed or coated on the surface of the steel structure. The paint has the following performance indicators after testing:

[0034] Drying time 3.2h; bonding strength...

Embodiment 3

[0036] Mix 120kg of 80-100 mesh expanded vermiculite and 80kg of hollow microbeads in a mixer to make a lightweight heat-insulating aggregate;

[0037] 140kg of gibbsite and 60kg of Guangxi clay are uniformly ground in a ball mill to 150 mesh to prepare a fireproof adhesive;

[0038] 75kg of dolomite powder and 25kg of zeolite powder are uniformly ground in a ball mill to 150 meshes to prepare additives, and then fire-resistant coatings are prepared:

[0039] Put 125kg of fireproof fiber, 90kg of fireproof adhesive, 75kg of additive, 125kg of lightweight heat-insulating aggregate and 85kg of fireproof adhesive in sequence in the mixer (stir while adding material) and stir together to obtain 500kg finished product.

[0040] Under the same conditions as in Examples 1 and 2, the coating has the following performance indicators after testing:

[0041] Drying time 2.8h; bonding strength 0.95MPa; compressive strength 1.85MPa, dry density 405Kg / m 3 ; Thermal conductivity 0.0740W / (m·K); 1...

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Abstract

A fire-profoing single-component inorganic paint for steel structure is prepared from light-weight insulating aggregate (minerals), fire-proof fibres, fire-proof adhesive (non-metal minerals) and additive through proportionally mixing and stirring. Its advantages are high fire-proofing effect, and no poison, odor and pollution.

Description

Technical field [0001] The invention relates to a coating and a preparation method thereof, in particular to an inorganic one-component fireproof coating and a preparation method thereof. Background technique [0002] According to the coating changes of fire retardant coatings under high temperature conditions, fire retardant coatings for steel structures can be divided into two categories: expansion type and non-expansion type. Intumescent fire retardant coatings are mainly composed of organic resins, foaming agents, carbonizing agents and other ingredients. It produces dense smoke and harmful gases at high temperatures, and its performance decays quickly, and its fire resistance limit is relatively low. It has long-term use aging and poor reliability. , It is extremely harmful to human health in the process of production and construction. Non-intumescent fire-retardant coatings are mainly composed of heat-insulating materials, adhesives and fire-retardant additives. The binder ...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/18
Inventor 李振涛马道贞王卫东
Owner 北京中核北研科技发展股份有限公司
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