Fireproof coating primer of single-mass-system indoor thin steel structure

A technology for fire-resistant coatings and steel structures, applied in fire-resistant coatings, coatings, etc., can solve the problems of mildew in emulsions, low labor productivity, increased production, packaging, and transportation costs, and achieve high-temperature mildew and simplified production process, the effect of shortening the mixing time

Active Publication Date: 2012-10-03
江苏兰陵钢结构工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The production process of dual-system thin steel structure fireproof coating primer is relatively complicated (see the process flow below figure 1 ), generally divided into ammonium polyphosphate powder dispersed in water, sanded and beaten, the slurry is transported to the next section through pipeline pneumatic or manual, and then mixed with binder emulsion, expanded graphite, perlite, etc. in the mixing equipment, The mixed materials are filtered through vibrating sieves and other processes, so the labor productivity is low
[0009] 2. Since the emulsion is prone to mildew at high temperature in summer, the storage period of the fireproof coating is greatly affected. Although the paint factory uses a certain amount of anti-mo

Method used

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  • Fireproof coating primer of single-mass-system indoor thin steel structure
  • Fireproof coating primer of single-mass-system indoor thin steel structure
  • Fireproof coating primer of single-mass-system indoor thin steel structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 6.8 parts by mass of styrene-acrylic rubber powder and 2.2 parts by mass of VAE rubber powder into a dry powder mixer and start stirring, then add 0.1 parts by mass of dispersant, 0.2 parts by mass of defoamer, 14.5 parts by mass of ammonium polyphosphate, and 4.8 parts by mass of melamine. 4.7 parts by mass of pentaerythritol, 16 parts by mass of floating beads, 4 parts by mass of mineral wool, and 0.02 parts by mass of polypropylene fiber, stirred and mixed for 10-15 minutes, and fully mixed to obtain a finished product. According to the finished product: water = 1.0:0.4, mix well, spray on the 70×150×6 (mm) steel plate that has been coated with anti-rust paint for curing, the curing period is 15 days, the ambient temperature is between 0~38°C, and the relative humidity is less than 85 %. After the curing period expired, its performance was measured, and the results are shown in Table 1 below.

Embodiment 2

[0031] Put 7.5 parts by mass of styrene-acrylic rubber powder and 2.5 parts by mass of VAE rubber powder into a dry powder mixer and start stirring, then add 0.15 parts by mass of dispersant, 0.20 parts by mass of defoamer, 15 parts by mass of ammonium dihydrogen phosphate, and 5 parts by mass of urea Parts, 5 parts by mass of monopentaerythritol, 16 parts by mass of floating beads, 5 parts by mass of fly ash, 0.01 part by mass of glass fiber, and 0.02 part by mass of polypropylene fiber. Stir and mix for 10-15 minutes, and mix thoroughly to obtain the finished product. After fully mixing the dry ingredients, add water at a ratio of 1.0:0.4 and mix evenly. Spraying boards, curing conditions are the same as in Example 1, and its performance is measured after the curing period expires. The results are shown in Table 1.

Embodiment 3

[0033] Put 8.3 parts by mass of styrene-acrylic rubber powder and 2.8 parts by mass of VAE rubber powder into the dry powder mixer and start stirring, then add 0.20 parts by mass of dispersant, 0.25 parts by mass of defoamer, 15.6 parts by mass of diammonium hydrogen phosphate, and dicyandiamide 5.2 parts by mass, 5.2 parts by mass of dipentaerythritol, 18 parts by mass of floating beads, 4 parts by mass of expandable graphite, and 0.03 parts by mass of glass fiber. Stir and mix for 15-20 minutes, and mix thoroughly to obtain the finished product. After fully mixing the dry material, add water at a ratio of 1.0:0.4 to mix and spray to make boards. The curing conditions are the same as in Example 1. After the curing period expires, test its performance.

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Abstract

The invention relates to a fireproof coating primer of a single-mass-system indoor thin steel structure. The fireproof coating primer comprises the following components in parts by mass: 9-12 parts of adhesive powder, 0.1-0.5 part of powder dispersant, 0.1-0.3 part of powder antifoam agent, 20-24 parts of inorganic insulating filler, 0.0-20.06 parts of coating reinforcing material and 24-28 parts of mixture composed of dehydration catalyst, foaming agent and charcoal forming agent. The fireproof coating is produced by one-step dry powder mixing method, therefore, the production efficiency is improved; the problems that the fireproof coating primer of the emulsion-based double-mass-system thin steel structure is easy to mildew in summer and has unstable foaming performance; and meanwhile, the product cost of package, storage, transport and the like is saved.

Description

technical field [0001] The invention belongs to the technical field of fire protection products, and relates to a production method of a single-system indoor thin steel structure fireproof paint primer. technical background [0002] Steel is a non-combustible building material that is resistant to earthquakes and bending. However, as a building material, steel has some unavoidable defects in fire protection. Its mechanical properties, such as yield point, tensile strength and modulus of elasticity, will drop sharply due to the increase of temperature. The steel structure usually loses its bearing capacity at a temperature of 450-650 ° C, and a large deformation occurs, causing the steel column and steel beam to bend. As a result, it cannot be used due to excessive deformation. The limit is around 15 minutes. [0003] In order to overcome the problem of poor fire resistance of steel structure materials in practical applications, fire protection must be carried out on steel ...

Claims

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Application Information

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IPC IPC(8): C09D125/14C09D123/08C09D131/04C09D7/12C09D5/18
Inventor 高新田吴润泽陈建刚马金王桂银
Owner 江苏兰陵钢结构工程有限公司
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