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Bio-based flame-retardant coating and preparation method thereof

A flame retardant coating, bio-based technology, used in fire retardant coatings, epoxy resin coatings, coatings, etc., can solve problems such as damage to life and property, poor compatibility with substrates, and a large amount of smoke and dust, and achieve combustion inhibition, flame retardancy and The effect of improved mechanical properties and low cost

Inactive Publication Date: 2020-05-15
CHANGCHUN SHUNFENG XINCHENG BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, water-based epoxy resins also have certain deficiencies, such as being easy to burn, producing a large amount of smoke and dust, and poor compatibility with the substrate, which will cause huge damage to human life and property. Therefore, it is urgent to develop a new green environmental protection Bio-based flame retardants to improve the flame retardant and mechanical properties of coatings

Method used

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  • Bio-based flame-retardant coating and preparation method thereof
  • Bio-based flame-retardant coating and preparation method thereof
  • Bio-based flame-retardant coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Preparation of bio-based flame retardants

[0033] Weigh 0.5g of low methoxyl pectin powder and dissolve it in 10ml of distilled water, and add 0.25g of calcium chloride. Prepare a sodium hydroxide solution with a mass fraction of 3%, adjust the pH value to 3 with the sodium hydroxide solution, raise the temperature to 60° C., and react for 1 h. After centrifugal washing, put into the oven until dry;

[0034] (2) Preparation of bio-based flame retardant coatings

[0035] Take 30 parts of a bio-based flame retardant as a filler, add it to a mixture of 100 parts of water and 200 parts of epoxy resin, and disperse it with a ball mill for 2 hours to obtain a mother liquor of a bio-based flame-retardant coating;

[0036] Take 30 parts of curing agent and 60 parts of water and mix evenly with the mother liquor of bio-based flame retardant coating according to the ratio of 1:2.

[0037] The water-based epoxy resin is 828 epoxy resin, and the water-based curing agent is ...

Embodiment 2

[0039] (1) Preparation of bio-based flame retardants

[0040] Weigh 0.5g of low methoxyl pectin powder and dissolve it in 10ml of distilled water, add 0.25g of calcium chloride to prepare a sodium hydroxide solution with a mass fraction of 3%, adjust the pH value to 4 with the sodium hydroxide solution, and raise the temperature To 60°C, react for 1h. After centrifugal washing, put into the oven until dry;

[0041] (2) Preparation of bio-based flame retardant coatings

[0042] Take 30 parts of a bio-based flame retardant as a filler, add it to a mixture of 100 parts of water and 200 parts of epoxy resin, and disperse it with a ball mill for 2 hours to obtain a mother liquor of a bio-based flame-retardant coating;

[0043] Take 30 parts of curing agent and 60 parts of water and mix evenly with the mother liquor of bio-based flame retardant coating according to the ratio of 1:2.

[0044] The water-based epoxy resin is 828 epoxy resin, and the water-based curing agent is Aq419...

Embodiment 3

[0046] (1) Preparation of bio-based flame retardant

[0047] Weigh 0.5g of low methoxyl pectin powder and dissolve it in 10ml of distilled water, add 0.25g of calcium chloride to prepare a sodium hydroxide solution with a mass fraction of 3%, adjust the pH value to 5 with the sodium hydroxide solution, and raise the temperature to 60°C, react for 1h. After centrifugal washing, put into the oven until dry;

[0048] (2) Preparation of bio-based flame retardant coatings

[0049] Take 30 parts of a bio-based flame retardant as a filler, add it to a mixture of 100 parts of water and 200 parts of epoxy resin, and disperse it with a ball mill for 2 hours to obtain a mother liquor of a bio-based flame-retardant coating;

[0050] Take 30 parts of curing agent and 60 parts of water and mix evenly with the mother liquor of bio-based flame retardant coating according to the ratio of 1:2.

[0051] The water-based epoxy resin is 828 epoxy resin, and the water-based curing agent is Aq419....

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Abstract

A bio-based flame-retardant coating is prepared from a component A and a component B according to a ratio of 1:(2-3), wherein the component A is composed of the following components in parts by mass:100 to 150 parts of water, 200 to 300 parts of epoxy resin and 10 to 50 parts of a bio-based flame retardant; the component B is composed of the following components in parts by mass: 20 to 50 parts of a curing agent and 25 to 60 parts of water; the bio-based flame retardant is prepared by carrying out bridging reaction on low-methoxy pectin and multivalent metal ions to form a network structure.According to the prepared bio-based flame-retardant coating, the heat resistance, good char forming property and multivalent metal ions of the low-methoxy pectin can successfully capture free radicalsand inhibit combustion, and the bio-based flame-retardant coating has the characteristics of catalyzing char forming, promoting crosslinking with a matrix and the like, so that the flame retardance and mechanical properties of the water-borne epoxy resin coating are greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a bio-based flame retardant coating, in particular to a preparation method of a bio-based flame retardant. Background technique [0002] With the rapid development of polymer science and engineering, polymer-based materials have been widely used in various electronic products, such as construction materials, furniture, packaging, vehicles and biomedical applications. Such a wide range of applications involves serious hazards arising from the flammability of polymers, posing a threat to human safety and severely limiting their applications. To address this issue, effective strategies are needed to improve the flame retardancy and smoke suppression properties of polymeric materials. [0003] In recent years, among many polymer materials, epoxy resin has been obtained due to its excellent physical and chemical properties, such as good adhesion, chemical resistance and solvent resistance, as well as its hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/18
CPCC08L2201/02C09D5/18C09D163/00C08L5/06
Inventor 刘春峰沙世刚周龙张立武赵立春李华晶
Owner CHANGCHUN SHUNFENG XINCHENG BUILDING MATERIAL CO LTD
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