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Expandable graphite nanometer fire-proof coating, preparation and use thereof

A technology of expanded graphite and fireproof coatings, applied in fireproof coatings, coatings, etc., can solve the problems of releasing extremely toxic nitrogen oxides, low strength of expandable graphite, and lack of protection, and achieve stable storage and good fireproof effect , the effect of long protection period

Inactive Publication Date: 2007-01-24
中科纳米涂料技术(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the polyurethane coating will emit HCN gas when it burns, its toxicity is very high, and adding a fireproof layer on the fireproof coating will bring inconvenience to the construction
[0004] At present, people propose a kind of expandable graphite as a fireproof coating. The traditional preparation method is to use concentrated sulfuric acid and concentrated nitric acid to react with natural graphite at about 100 ° C. Due to the characteristics of graphite not easy to age, it is generally used on small seals and wood products. , as a fire retardant coating, the validity period can be extended to more than ten years, but its disadvantages are that the reaction temperature is high and extremely toxic nitrogen oxides are released during production, causing environmental pollution. 2 Gas (the sulfur content of the product is generally about 4%)
Furthermore, expandable graphite has very low strength and very weak adhesion. Once it expands in a fire, the fireproof layer is easily blown off by the fire stroke and cannot protect it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Expandable graphite nano fireproof coating, by weight, its composition is: 23 parts of acrylic resins (using M n =20000, adopt the BD801 type of Shanghai Xinda Chemical Company), 3 parts of amino resins (adopt the 582 type of Jiangsu Sanmu Chemical Company), 4 parts of dipentaerythritol, 22 parts of low-sulfur expandable graphite, 3 parts of silicone resin (U.S. Dow Corning Company 850 type), 12 parts of melamine ammonium polyphosphate (polymerization degree n is 1000;), 4 parts of nano flame retardant mother liquor, 4 parts of reinforced glass fiber, 4 parts of rutile titanium dioxide, 2 parts of triphenyl phosphate flame retardant Toughening agent, 2 parts of ferrocene smoke suppressant, 0.6 part of German Henkel E1 type siloxane defoamer, 0.6 part of German Henkel S1 type siloxane leveling agent, 20 parts of mixed solvent (No. 200 solvent oil: Butyl acetate=4:1) where:

[0036] The nano-flame-retardant mother liquor is composed of nano-titanium dioxide: nano-silicon...

Embodiment 2

[0050] The difference from Example 1 is:

[0051] Expandable graphite nano fireproof coating, by weight, its composition is: 20 parts of acrylic resins (using M n =50000, adopt the 963 type of Jiangsu Sanmu Chemical Company), 4 parts of amino resins (582-2 of Shanghai Xinda Chemical Company), 1 part of dipentaerythritol, 18 parts of low-sulfur expandable graphite, 4 parts of silicone resin (U.S. 850 type produced by Dow Corning), 16 parts of melamine ammonium polyphosphate (the degree of polymerization n is 400), 6 parts of nano flame retardant mother liquor, 6 parts of reinforced glass fiber, 3 parts of rutile titanium dioxide, 4 parts of No. 52 liquid chlorinated paraffin Flame retardant and toughening agent, 4 parts of zinc oxide smoke suppressant, 0.4 part of German Henkel E8 type siloxane defoamer, 0.3 part of German Henkel S4 type siloxane leveling agent, 18 parts of mixed solvent (No. 200 solvent Oil: butyl acetate = 6: 1) where:

[0052] The composition of the nano-f...

Embodiment 3

[0064] The difference from Example 1 is:

[0065] Expandable graphite nano fireproof coating, by weight, its composition is: 25 parts of acrylic resins (using M n =30000), 4 parts of amino resins, 3 parts of dipentaerythritol, 20 parts of low-sulfur expandable graphite, 2 parts of silicone resins, 15 parts of melamine ammonium polyphosphate (its degree of polymerization n is 700), 2 parts of nano flame-retardant mother liquor, 5 parts of reinforced glass fiber, 5 parts of rutile titanium dioxide, 3 parts of No. 52 liquid chlorinated paraffin flame retardant and toughening agent, 3 parts of molybdenum trioxide smoke suppressant, 0.3 part of XBS3000 type polyether (or XBP2000) defoamer , 0.5 parts of German Henkel S1 type siloxane leveling agent, 15 parts of mixed solvent (No. 200 solvent oil: butyl acetate=5: 1); wherein:

[0066] The nano-flame retardant mother liquor is composed of nano-titanium dioxide: nano-silicon dioxide: nano-magnesium-aluminum hydrotalcite: polymer, wh...

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Abstract

The invention opened a process to product the inflatable graphite nano fire resisting paint. The composition is : acrylic resin20-25; amine resin 3-4; pentanol1-4; inflatable graphite 18-22; organic siliconresin2-4; melocol ammonia polyphosphate12-16; nano-compound fire retardant 2-6; intensify spun glass4-6; rutile titanium white3-5; elasticizer2-4; smoke abatementer2-4; antifoam agent0.3-0.6; flow promoter0.3-0.6; mixing solvent15-20. The product has the good mechanical character, weather resisting property and rotproofness.

Description

technical field [0001] The invention relates to a fireproof coating, in particular to an expandable graphite nano fireproof coating and its preparation method and application. Background technique [0002] At present, fireproof coatings are widely used in petrochemical (such as refineries, oil drilling platforms, oil storage tank supports, etc.), electric power, industrial and civil buildings (such as industrial plants, large stadium steel structures), machinery and other industries. Therefore, it is imminent to develop fire-resistant coatings that are weather-resistant, anti-corrosion and highly flame-retardant. [0003] Conventional ultra-thin fireproof coatings for steel structures contain pentaerythritol, ammonium polyphosphate, melamine and other water-soluble and easily degradable components. During protection, the composite flame retardant will react with the components in the air due to salting out, and deliquescence or chemical changes will occur. Applied outdoors...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/02C09D5/18
Inventor 王震宇韩恩厚柯伟
Owner 中科纳米涂料技术(苏州)有限公司
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