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Polymer modified cement base thick coated type steel structure fire-proof paint

A thick-coated, fire-resistant coating technology, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of high coating density, easy to burst and fall off, poor decorative coating, etc., to improve coating adhesion, Reduced coating density, less prone to cracking effects

Inactive Publication Date: 2005-08-03
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesion and physical and mechanical properties are poor, the moisture resistance is poor, it is easy to crack, powder, peel off, and the coating decoration is not good, etc.
At present, there are two prominent problems in thick-coated steel structure fireproof coatings: (1) poor adhesion and water resistance, and easy to burst and fall off under high temperature conditions; (2) high coating density, which increases the load on the steel structure. It also brings inconvenience to the construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) First, sieve and dry the melted floating beads, wollastonite mineral powder, expanded perlite and expanded vermiculite respectively, the particle size of the powder is controlled at 0.1-0.3 mm, and the particle size of the aggregate is 1-5 mm;

[0018] 2) Potassium silicate, attapulgite clay, aluminum ceramic powder, calcined magnesite, aluminum hydroxide, depleted water borax, and aluminum polyphosphate are pulverized and sieved with a high-performance ball mill to make the particle size ≤ 300 mesh;

[0019] 3) Spray-dry the easily water-absorbing expanded perlite and expanded vermiculite with 107 glue, and then spray-dry with 0.5%-2.0% alcohol of silane coupling agent to carry out surface modification;

[0020] 4) Aluminum silicate and jute fibers are cut and dispersed by cotton shears;

[0021] 5) Portland cement 32.0Kg, potassium silicate 6.5Kg, aluminum ceramic powder 2.5Kg, attapulgite clay 2.5Kg, calcined magnesite 5.2Kg and polyacrylic acid water reducing age...

Embodiment 2～5

[0026] The basic formula remains unchanged, only the type of emulsion is changed, and the production process is the same as in Example 1. The results are shown in Table 1.

[0027]

Embodiment 6～9

[0029] The basic formula remains unchanged, VAE emulsion is selected, and the amount of cement, potassium silicate, expanded vermiculite and calcined magnesite is changed, and the rest are the same as in Example 1. The results are shown in Table 2.

[0030]

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PUM

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Abstract

The present invention relates to polymer modified cement base thickly coated fireproof paint for steel structure, and relates to fireproof paint. The paint consists of adhesive, modifier, additive, aggregate, powder material and reinforcing material. The production process includes: sieving and drying powder material and aggregate; pulverizing and sieving adhesive except cement and fireproof agent; surface modification of pearlite and vermiculite; shearing and dispersing reinforcing material; distributing all the additive and polymer powder and cement powder material for modification or mixing all the material except emulsion. The present invention realizes the high temperature continuity of adhesion, realizes the modification of high temperature resistant inorganic adhesive and cement, makes the coating possess rigidity of cement and flexibility of polymer, and makes the coating low in density, high in adhesion, waterproof and tough.

Description

technical field [0001] The invention relates to a fireproof coating, in particular to a cement-based thick-coated steel structure fireproof coating through chemical modification. Background technique [0002] Steel structures have comprehensive advantages such as light weight, easy installation, short construction period, good seismic performance, high degree of mechanization in manufacturing and installation, flexible layout, and less pollution, and are increasingly used in (super) high-rise buildings. However, poor fire resistance is a fatal shortcoming of steel structure buildings. Under the high temperature of fire, the mechanical properties of steel, such as yield strength and elastic modulus, decrease rapidly with the increase of temperature, and its critical failure temperature is about 550°C. Once it catches fire, it will gradually lose its load-bearing capacity in about 15 minutes. Concrete also has fire resistance problems. Due to the complex and discrete componen...

Claims

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Application Information

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IPC IPC(8): C09D131/04C09D125/14C09D133/00C09D5/18
Inventor 戴李宗庄勋港吴明联黄晓平
Owner XIAMEN UNIV
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