Thick anti-cracking water-based ultra-thin steel structure fireproof coating and preparation method thereof
A fire retardant coating, ultra-thin technology, applied in the field of coatings to avoid volume shrinkage, superior anti-settling, and excellent adhesion
Inactive Publication Date: 2019-02-01
湘江涂料科技有限公司
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Problems solved by technology
The fire retardant coating does not involve the technical problems of single thick coating and thick coating anti-cracking
Method used
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Embodiment 1～5
[0046] The mass parts of components in each embodiment are as shown in table 1:
[0047] Table 1 Mass parts list of each component in Examples 1 to 5 of the present invention
[0048]
[0049] Note: "-" means not added, "******" in the table means no requirement for the model.
[0050] Thick-coated anti-cracking water-based ultra-thin steel structure fireproof coating preparation method Examples 1-5
[0051] The preparation method comprises the following four steps:
[0052] (1) While stirring at 500 r / min, add part of deionized water (95% of the total amount), wetting and dispersing agent, pH value stabilizer, and part of the defoamer (50% of the total amount) in sequence, pay attention Do not let the material splash on the cylinder wall and the stirring shaft, then stir for 5 minutes;
[0053] (2) Increase the rotation speed to 900r / min, add titanium dioxide and melamine in order under stirring, pay attention not to cause serious dust and powder accumulation, add some ...
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Abstract
A thick anti-cracking water-based ultra-thin steel structure fireproof coating and a preparation method thereof are disclosed. The fireproof coating comprises the following components (by weight): 170-210 parts of a vinyl acetate-ethylene copolymer emulsion; 30-60 parts of flame-retardant latex; 300-450 parts of a powder composite flame retardant; 20-50 parts of a liquid flame retardant; 50-100 parts of melamine; 70-110 parts of titanium dioxide; 5-10 parts of an anti-cracking agent; 30-60 parts of a flexibility enhancer; 3-6 parts of a wetting dispersant; 1-3 parts of a preservative; 1-3 parts of an antifoaming agent; 1-3 parts of a pH stabilizer; 6-12 parts of a thixotropic agent; and 125-160 parts of deionized water. The invention also includes a preparation method of the coating. The fireproof coating of the invention has the characteristics of thick coating and no cracking and is sprayed by special spraying equipment for ultra-thin fireproof coatings; for one-time film formation,the dry film can reach 1.5 mm and above without sagging or cracking; the fire endurance time exceeds 90 min; and the preparation method is simple and is advantageous for large-scale production.
Description
technical field [0001] The invention relates to the technical field of coatings, in particular to a thick-coated anti-cracking water-based ultra-thin fireproof coating for steel structures and a preparation method thereof. Background technique [0002] Steel structure buildings have the advantages of light weight, fast construction, high strength, and flexible layout. They are widely used in various single-storey factory buildings, commercial high-rise buildings, etc., and their development prospects are promising. [0003] However, steel has strong thermal conductivity and poor fire resistance, and its mechanical properties such as yield point, tensile strength and elastic modulus will drop sharply due to the increase of temperature. Usually at a temperature of 450-650°C, the load-bearing capacity will be lost, and deformation will cause the steel structure to lose its support and collapse. Generally, the fire resistance limit of unprotected steel structures is about 15 mi...
Claims
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IPC IPC(8): C09D131/04C09D201/00C09D5/18
CPCC08K2003/2241C08L2201/02C09D5/18C09D131/04C08L101/00C08K5/34922C08K3/22C08K3/32C08K13/02
Inventor 张爱元刘寿兵徐祥麟
Owner 湘江涂料科技有限公司