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Fireproof coating and preparation method thereof

A technology of fire-resistant coatings and raw materials, applied in fire-resistant coatings, coatings, etc., can solve problems such as a large amount of smoke, affecting personnel evacuation and escape, and low fire resistance limit, so as to reduce usage, prevent smoke from escaping, and achieve ultra-high ratio The effect of surface area

Active Publication Date: 2020-07-31
GUANGDONG NANOLUTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fire-resistant limit of existing fire-resistant coatings is low, and a large amount of smoke will be generated when burning, which will affect the evacuation and escape of personnel. Therefore, it is imminent to develop fire-resistant coatings with excellent fire resistance and smoke suppression

Method used

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  • Fireproof coating and preparation method thereof
  • Fireproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1), preparation of modified white graphene: get 0.5 part of white graphene powder and join in the round bottom flask, and add 100 parts of distilled water in the round bottom flask, then ultrasonically disperse, add 0.1 part of ten Sodium dialkyl sulfate, ultrasonically stirred at high speed to obtain a lipophilic modified white graphene dispersion; after heating the lipophilic modified white graphene dispersion to 60°C, add 0.5 parts of initiator ammonium persulfate, and stir for 10 minutes Start to add 0.05 parts of methyl methacrylate dropwise, and drop it in 0.5h. After the dropwise addition, keep warm for 0.5h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and vacuum dry and grind at 60°C to obtain polymethyl methacrylate Coated modified white gr...

Embodiment 2

[0040] Step 1), preparation of modified white graphene: get 2 parts of white graphene powder and join in the round bottom flask, and add 100 parts of ethanol in the round bottom flask, then ultrasonically disperse, add 0.2 part of ten Sodium dialkylsulfate, ultrasonically stirred at high speed to obtain a lipophilic modified white graphene dispersion; after heating the lipophilic modified white graphene dispersion to 90°C, add 1 part of initiator ammonium persulfate, and stir for 15 minutes Start to add 0.5 parts of methyl acrylate dropwise, and finish dropping in 0.6h. After the dropwise addition, keep warm for 1 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, and vacuum dry and grind at 70°C to obtain polymethyl acrylate coating Modified white graphene.

[00...

Embodiment 3

[0045] Step 1), preparation of modified white graphene: get 5 parts of white graphene powder and join in the round bottom flask, and add 100 parts of glycerol in the round bottom flask, then ultrasonic dispersion, add 0.3 parts in the round bottom flask One part oleylamine, ultrasonically stirred at high speed to obtain a lipophilic modified white graphene dispersion; after heating the lipophilic modified white graphene dispersion to 90°C, add 2 parts of initiator azobisisobutyronitrile, and stir for 20min Afterwards, 1 part of glycidyl acrylate was added dropwise, and the drop was completed within 0.7 hours. After the dropwise addition, keep warm for 1.5 h until the reaction is complete. After the reaction is completed, adjust the pH value to 7 with ammonia water, quickly cool to room temperature, filter under reduced pressure, wash the filter cake with distilled water for 3 to 4 times, then wash with alcohol once, dry and grind in vacuum at 90°C to obtain polyglycidyl methac...

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Abstract

The invention discloses a fireproof coating and a preparation method thereof, wherein, in parts by weight, the fireproof coating comprises the following raw material components: 20-27 parts of matrix resin, 16-20 parts of melamine phosphate, 12-15 parts of pentaerythritol, 7-10 parts part of borax, 1 to 5 parts of chlorinated paraffin, 0.5 to 8 parts of modified white graphene, 3 to 8 parts of smoke suppressant, 0.1 to 0.8 part of defoamer, and 11.5 to 34 parts of solvent A; wherein, the modified The white graphene is a white graphene coated and modified by a polymer, and the polymerized monomer of the polymer is styrene or an acrylic ester monomer. The fire retardant coating has excellent fire resistance and smoke suppression properties, and the coating formed by using the fire retardant coating has a fire resistance limit of more than 96 minutes and a smoke density level of less than 25% under the condition of a thickness of 1.5 mm.

Description

technical field [0001] The invention relates to the technical field of fireproof coatings, in particular to a fireproof coating and a preparation method thereof. Background technique [0002] As a form of high-rise building structure, steel structure is widely used in the construction industry because of its high strength, light weight, good extensibility, earthquake resistance and short construction period, especially in super high-rise and large-span Construction and other aspects have shown strong vitality. With the development of China's urban scale, the application of steel structure in China's construction industry has very broad prospects. However, since the steel structure itself is non-combustible, the problem of fire protection and heat insulation protection of the steel structure was once ignored by people. The mechanical strength of steel decreases with the increase of temperature. At about 500°C, its strength drops to 40% to 50%, and the mechanical properties ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/18C09D133/04C09D7/61C09D7/62C09D7/63
CPCC08K2003/387C08L2201/02C09D5/18C09D7/61C09D7/62C09D7/63C09D7/70C09D143/04C08L91/06C08K13/06C08K9/10C08K3/042C08K5/053C08K3/38
Inventor 段曦东段镶锋赵涛楠
Owner GUANGDONG NANOLUTION SCI & TECH CO LTD
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