Flame-retardant coating for floor

A technology for flame retardant coatings and floors, applied in the field of coatings, can solve problems such as inability to meet, and achieve the effects of improving strength and toughness, preventing high temperature cracking, and improving fire performance

Inactive Publication Date: 2018-11-06
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fire retardant coatings on the market are generally divided into two types: intumescent and non-intumescent. Non-intumescent fire retardant coatings achieve fire prevention effects by adding flame retardants. To achieve a good fire prevention effect, they must be painted very thick and Adding a large amount of flame retardants containing halogens, nitrogen, phosphorus, etc., produces a large amount of toxic gases; intumescent fireproof coatings are coatings that expand when heated to form a honeycomb carbonized layer, which isolates the heat of the flame and reduces or slows down the transfer to the substrate. At high temperature, the coating decomposes to release other gases, isolates and dilutes the air, and in addition, a series of physical and chemical reactions of the coating absorb a large amount of heat when it is fire-resistant, thereby retarding the flame and delaying the spread and spread of the flame, providing people with fire extinguishing time, but intumescent fire retardant coatings are mainly solvent-based coatings with high VOC, which can no longer meet the market demand for low VOC

Method used

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  • Flame-retardant coating for floor

Examples

Experimental program
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Effect test

Embodiment 1

[0019] The preparation method of flame retardant comprises the following steps:

[0020] 1) adding graphene oxide to 5wt% citric acid solution for soaking for 10 hours, and filtering to obtain acid-treated graphene oxide;

[0021] 2) Add multi-carbon nanotubes to the mixed acid solution of 10wt% dilute nitric acid and 20wt% dilute sulfuric acid, then add the acid-treated graphene oxide of step 1) for ultrasonic dispersion, filter and wash until the filtrate is neutral , to obtain a mixture of pretreated graphene oxide and multi-carbon nanotubes after drying;

[0022] 3) Add the pretreated mixture of step 2) into 8wt% carboxymethyl chitosan Schiff base derivative solution for ultrasonic dispersion, heat up to 40°C for reaction, perform ultrasonic dispersion after the reaction, and filter and dry. The mass ratio of graphene oxide, multi-carbon nanotubes and carboxymethyl chitosan Schiff base derivatives is 7:6:13.

Embodiment 2

[0024] The preparation method of flame retardant comprises the following steps:

[0025] 1) adding graphene oxide to 10wt% citric acid solution for soaking for 6 hours, and filtering to obtain acid-treated graphene oxide;

[0026] 2) Add multi-carbon nanotubes to the mixed acid solution of 20wt% dilute nitric acid and 10wt% dilute sulfuric acid, then add the acid-treated graphene oxide of step 1) for ultrasonic dispersion, filter and wash until the filtrate is neutral , to obtain a mixture of pretreated graphene oxide and multi-carbon nanotubes after drying;

[0027] 3) Add the pretreated mixture of step 2) into 4wt% carboxymethyl chitosan Schiff base derivative solution for ultrasonic dispersion, heat up to 60°C for reaction, perform ultrasonic dispersion after the reaction, and filter and dry. The mass ratio of graphene oxide, multi-carbon nanotubes and carboxymethyl chitosan Schiff base derivatives is 11:4:10.

Embodiment 3

[0029] A fire-retardant coating for floors, comprising the following components in parts by weight:

[0030] 50 parts of acrylic emulsion, 28 parts of pure acrylic emulsion, 6 parts of vermiculite powder, 7 parts of superfine dolomite, 12 parts of flame retardant of Example 1, 0.6 part of sodium hexametaphosphate wetting agent, 0.5 part of water-based acrylate copolymer And 10 parts of titanium dioxide, 10 parts of montmorillonite.

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Abstract

The invention provides a flame-retardant coating for a floor. The flame-retardant coating is characterized by being prepared from components in parts by weight as follows: 40-60 parts of an acrylic emulsion, 20-40 parts of a pure acrylic emulsion, 4-8 parts of vermiculite powder, 5-10 parts of superfine dolomite, 8-16 parts of a flame retardant, 0.4-0.8 parts of a wet dispersant, 0.3-0.6 parts ofa levelling agent and 18-24 parts of filler, wherein the flame retardant is mainly prepared from graphene oxide, multi-carbon nanotubes and a carboxymethyl chitosan schiff base derivative. The flame-retardant coating has good thermal insulation and fireproof performance and is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a flame-retardant coating for floors. Background technique [0002] In the decoration industry, the fire protection of wooden floors has always been a concern of consumers. At present, fire retardant coatings on the market are generally divided into two types: intumescent and non-intumescent. Non-intumescent fire retardant coatings achieve fire prevention effects by adding flame retardants. To achieve a good fire prevention effect, they must be painted very thick and Adding a large amount of flame retardants containing halogens, nitrogen, phosphorus, etc., produces a large amount of toxic gases; intumescent fireproof coatings are coatings that expand when heated to form a honeycomb carbonized layer, which isolates the heat of the flame and reduces or slows down the transfer to the substrate. At high temperature, the coating decomposes to release other gases, isolate...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D5/18C09D7/61
CPCC08K2201/011C08L2201/02C08L2201/08C08L2205/025C08L2205/03C09D5/18C09D7/61C09D7/70C09D133/04C08L33/04C08L5/08C08K13/06C08K3/346C08K3/042C08K3/041C08K3/26
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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