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Low-smoke superthin expansion steel structure fireproof coating and its preparing method

A fire retardant coating and ultra-thin technology, applied in the direction of coating, can solve the problems of affecting the fire resistance limit, unable to keep up with the strength, prone to peeling, etc., and achieve the effect of good compactness, slow burning speed, and excellent fire performance.

Inactive Publication Date: 2005-12-21
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In CN 1408800, Wang Guojian etc. used expandable expanded graphite to increase the height of the foamed material, but the foamed layer was too high, the strength could not keep up, and it was easy to peel off, which affected the fire resistance limit; mentioned in US.666,573 to use thermosetting The compounding of resin and thermoplastic resin increases the strength of the coating, but the increase of the amount of resin will cause the increase of smoke emission

Method used

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  • Low-smoke superthin expansion steel structure fireproof coating and its preparing method
  • Low-smoke superthin expansion steel structure fireproof coating and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0058] The raw material formula is as follows:

[0059] Component Weight ratio (%)

[0060] Acrylic 21

[0061] Chlorinated paraffin (70#) 6

[0062] Amino resin 4.5

[0063] 200# solvent gasoline 10.5

[0064] Butyl acetate 3.2

[0065] Ammonium polyphosphate 22.5

[0066] Pentaerythritol 12

[0067] Melamine 7

[0068] Titanium dioxide 5

[0069] Ceramic powder 7.8

[0070] Zinc borate 0.5

[0071] The production process of the fireproof coating produced according to the above formula is as follows: in the dispersion kettle, first add 50-70% resin and solvent of the total weight of the resin, and then add ceramic filler, foaming agent, carbon forming agent, catalyst, Smoke suppressant, plasticizer and inorganic pigments and fillers, disperse at 1000rpm for 100 minutes, and grind for 60 minutes to make the dispersion fineness reach 10-20μm, then filter, add additives, remaining resin and solvent, disperse at 1000rpm for 30 minutes , dispersed evenly and packaged. ...

example 2

[0073] The raw material formula is as follows:

[0074] Component Weight ratio (%)

[0075] epoxy resin 3

[0076] Acrylic 25

[0077] Amino resin 6

[0078] Dioctyl phthalate 7

[0079] 400# solvent gasoline 7.5

[0080] Butyl acetate 2.2

[0081] Ammonium polyphosphate 20.5

[0082] Dipentaerythritol 12

[0083] Melamine 4

[0084] Polyurea 2

[0085] Titanium dioxide 2

[0086] Silica fume powder 2.5

[0087] glass powder 3

[0088] Aluminum silicate 1

[0089] Barium metaborate 1

[0090] Iron acetoacetate 1

[0091] Auxiliary 0.3

[0092] The preparation process is basically the same as in Example 1. After feeding, disperse at 3000rpm for 30 minutes, and grind for 120 minutes to make the dispersion fineness reach 140-150μm, then filter, add additives, remaining resin and solvent, disperse at 3000rpm for 10 minutes, disperse evenly and pack.

example 3

[0094] The raw material formula is as follows:

[0095] Component Weight ratio (%)

[0096] High Chlorinated Polyethylene 15

[0097] Silicone resin 3.5

[0098] Chlorinated paraffin (70#) 7

[0099] Dibutyl phthalate 2

[0100] 200# solvent gasoline 5.6

[0101] Isopropanol 3.2

[0102] Melamine polyphosphate 18

[0103] Polyamide 3.5

[0104] Pentaerythritol 14

[0105] Melamine 8

[0106] Fiberglass 6

[0107] Enamel 7

[0108] ceramic powder 2

[0109] Zinc polymolybdate 2

[0110] Potassium fluoroborate 3

[0111] Auxiliary 0.2

[0112] The preparation process is the same as in Example 1.

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PUM

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Abstract

The invention relates to a kind of new-style low smoke super thin inflating steel structure fire protection dope and its producing method. Its components have coordinated effect when encountering fire. It inflates and froths to isolate oxygen and has good heat insulation performance. It can slow down the speed of heat transmitting to protected basic material, and prevent flame fast overspreading. The dope of the invention is mainly comprised of basic material resin, carbon forming agent, vesicant and activator. It uses certain proportion of resin as main membrane forming substance, and improves height and intensity of frothing layer through adding china padding. The frothing height can get to over 50 times. It uses china padding and smoke inhibitor to have coordinated effect and reduce smoking quantity. Advantages: simple to smear, good fire protection performance, small smoking quantity, high frothing height and high frothing intensity.

Description

technical field [0001] The invention relates to the fields of chemical industry and fire protection, and is a novel low-smoke ultra-thin intumescent fireproof coating for steel structures and a preparation method thereof. Background technique [0002] There are many types of fire-resistant coatings for steel structures, which can be divided into water-based, solvent-based and powder-based according to their material forms. Available in thick, thin and ultra-thin. The ultra-thin steel structure fireproof coating is mainly composed of base resin, char-forming agent, foaming agent, catalyst, etc. Oxygen is isolated, and it has good heat insulation performance, which can delay the speed of heat transfer to the protected substrate and prevent the rapid spread of flames. In addition, the process of the expansion of the coating to form a foam insulation layer is an endothermic reaction, which reduces the temperature of the system, so its flame retardant and fireproof effect is re...

Claims

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Application Information

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IPC IPC(8): C09D133/00
Inventor 杨海华武利民游波顾广新周树学
Owner FUDAN UNIV
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