Ultra-thin weather-proof and anit-cracking organosilicon fire-proof paint

Abstract

The invention discloses ultra-thin weather-proof and anit-cracking organosilicon fire-proof paint which is prepared from the following raw materials by mass percentage: 25-35% of modified nano polysiloxane oligomer, 5-8% of tri-functional organosilicon cross-linking agent, 2-5% of tetra-functional organosilicon cross-linking agent, 5-10% of hydrophobic fumed silica, 5-8% of titanium dioxide, 20-25% of ammonium polyphosphate, 8-12% of melamine, 9-15% of surface coating pentaerythritol, 2-5% of aluminum hydroxide, 2-6% of glass fiber powder, 3-10% of hydroxyl silicone oil, 1-2% of amino silane coupling agent, 0.5-3% of epoxy silane coupling agent and 0.1-0.3% of catalyst. Construction procedures of the paint are reduced; the use cost of the paint is lowered; and at the same time, a service life of the paint is further ensured.

Description

technical field

[0001] The invention relates to the technical field of fireproof coating production, in particular to an ultra-thin weather-resistant and crack-resistant organosilicon fireproof coating. Background technique

[0002] Today, with the rapid development of science and technology, steel structures are still the preferred materials for large-span buildings. Compared with concrete buildings, steel structures have obvious advantages in terms of performance, environmental protection and economic benefits, especially in terms of seismic performance, construction period and recycling. However, the obvious disadvantages of steel structure materials are poor fire and corrosion resistance, and steel structures will collapse within 10 minutes. Therefore, the protection of steel structure buildings is an essential construction process. At present, the use of fire-resistant coatings is a very economical and effective measure, but the quality of fire-resistant coatings on th...

Examples

Embodiment 1

[0034] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 32%; trifunctional silicone crosslinking agent: 5.5%; Four-functional silicone crosslinking agent: 2.8%; hydrophobic fumed silica: 5%; titanium dioxide: 5%; ammonium polyphosphate: 20.5%; melamine: 8.5%; surface-coated pentaerythritol: 9.5%; Aluminum: 2%; glass fiber powder: 2.5%; hydroxyl silicone oil: 4%; aminosilane coupling agent: 1.5%; epoxy silane coupling agent: 1%; catalyst: 0.2%.

[0035] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methylphenyldimethoxysilane and nano-titanium oxide powder; magnetically stirred for 10 minutes and then ultrasonicated for 2 hours, then gradually raised the temperature to 70°C, and slow...

Embodiment 2

[0041] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 25%; trifunctional silicone crosslinking agent: 7%; Four-functional silicone crosslinking agent: 5%; hydrophobic fumed silica: 5%; titanium dioxide: 5.2%; ammonium polyphosphate: 21%; melamine: 9%; surface-coated pentaerythritol: 9%; Aluminum: 2%; glass fiber powder: 6%; hydroxyl silicone oil: 3%; aminosilane coupling agent: 2%; epoxy silane coupling agent: 0.5%; catalyst: 0.3%.

[0042] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methylphenyldimethoxysilane and nano-titanium oxide powder; after magnetic stirring for 30 minutes, ultrasonication for 1 hour, the temperature was gradually raised to 80 ° C, and the catalyst tetra...

Embodiment 3

[0050] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 30%; trifunctional silicone crosslinking agent: 5%; Four-functional silicone crosslinking agent: 3%; hydrophobic fumed silica: 5.9%; titanium dioxide: 5%; ammonium polyphosphate: 20%; melamine: 8%; surface coating pentaerythritol: 10%; Aluminum: 3%; glass fiber powder: 2%; hydroxyl silicone oil: 5%; aminosilane coupling agent: 1%; epoxy silane coupling agent: 2%; catalyst: 0.1%.

[0051] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methyl phenyl dimethoxy silane and nano-titanium oxide powder; magnetic stirring and mixing for 20 minutes, ultrasonication for 1.5 hours, gradually raising the temperature to 75 ° C, and slowly add...

technical field

[0001] The invention relates to the technical field of fireproof coating production, in particular to an ultra-thin weather-resistant and crack-resistant organosilicon fireproof coating. Background technique

[0002] Today, with the rapid development of science and technology, steel structures are still the preferred materials for large-span buildings. Compared with concrete buildings, steel structures have obvious advantages in terms of performance, environmental protection and economic benefits, especially in terms of seismic performance, construction period and recycling. However, the obvious disadvantages of steel structure materials are poor fire and corrosion resistance, and steel structures will collapse within 10 minutes. Therefore, the protection of steel structure buildings is an essential construction process. At present, the use of fire-resistant coatings is a very economical and effective measure, but the quality of fire-resistant coatings on th...

Examples

Embodiment 1

[0034] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 32%; trifunctional silicone crosslinking agent: 5.5%; Four-functional silicone crosslinking agent: 2.8%; hydrophobic fumed silica: 5%; titanium dioxide: 5%; ammonium polyphosphate: 20.5%; melamine: 8.5%; surface-coated pentaerythritol: 9.5%; Aluminum: 2%; glass fiber powder: 2.5%; hydroxyl silicone oil: 4%; aminosilane coupling agent: 1.5%; epoxy silane coupling agent: 1%; catalyst: 0.2%.

[0035] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methylphenyldimethoxysilane and nano-titanium oxide powder; magnetically stirred for 10 minutes and then ultrasonicated for 2 hours, then gradually raised the temperature to 70°C, and slow...

Embodiment 2

[0041] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 25%; trifunctional silicone crosslinking agent: 7%; Four-functional silicone crosslinking agent: 5%; hydrophobic fumed silica: 5%; titanium dioxide: 5.2%; ammonium polyphosphate: 21%; melamine: 9%; surface-coated pentaerythritol: 9%; Aluminum: 2%; glass fiber powder: 6%; hydroxyl silicone oil: 3%; aminosilane coupling agent: 2%; epoxy silane coupling agent: 0.5%; catalyst: 0.3%.

[0042] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methylphenyldimethoxysilane and nano-titanium oxide powder; after magnetic stirring for 30 minutes, ultrasonication for 1 hour, the temperature was gradually raised to 80 ° C, and the catalyst tetra...

Embodiment 3

[0050] An ultra-thin weather-resistant and anti-cracking silicone fireproof coating, prepared from the following raw materials in terms of mass percentage: nano-modified polysiloxane oligomer: 30%; trifunctional silicone crosslinking agent: 5%; Four-functional silicone crosslinking agent: 3%; hydrophobic fumed silica: 5.9%; titanium dioxide: 5%; ammonium polyphosphate: 20%; melamine: 8%; surface coating pentaerythritol: 10%; Aluminum: 3%; glass fiber powder: 2%; hydroxyl silicone oil: 5%; aminosilane coupling agent: 1%; epoxy silane coupling agent: 2%; catalyst: 0.1%.

[0051] The nano-modified polysiloxane oligomer is prepared by the following method: adding ether into a three-necked flask with a reflux condenser and a magnetic stirrer; adding metered dimethyl methoxy base silane, methyl phenyl dimethoxy silane and nano-titanium oxide powder; magnetic stirring and mixing for 20 minutes, ultrasonication for 1.5 hours, gradually raising the temperature to 75 ° C, and slowly add...

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