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Halogen-free flame-retardant silane water-based coating as well as preparation and application thereof

A water-based coating and silane technology, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of reducing material flammability, large filling amount, material strength and elastic modulus, etc., to achieve excellent high and low temperature performance, good flame retardancy effect, aesthetically enhancing effect

Inactive Publication Date: 2020-05-22
王春林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, people have invested a lot of energy to improve the fire performance of wood, plastics, textiles, etc. So far, there are three fire prevention methods that have been widely used: the first method is the low-cost rapid mixing technology, that is, the mechanical mixing of flame retardants. However, the effective flame retardant effect needs to be loaded with a large amount of flame retardant, which will have a significant impact on the strength and elastic modulus of the material; the second method is to chemically modify the flame retardant The effective functional groups are modified on the material matrix, thereby reducing the flammability of the material, and turning the flame retardant element into an integral part of the polymer chain, which usually has higher flame retardant efficiency and longer durability flame retardant effect, but This method will change the morphology and physical properties of most polymers, such as melting point, density and glass transition temperature, etc., which will cause problems for the industrial production of some materials; the third method is surface treatment, that is, using flame retardant coatings, This has become one of the most convenient, economical and effective methods
[0004] Commonly used flame-retardant coatings contain halogens, and when the halogen-containing materials burn, they release a large amount of toxic smoke, carbon monoxide, and hydrogen halide gas, which hinders people's evacuation and fire-fighting work during a fire, causing "secondary" pollution after the fire, making life property to serious damage
Halogen-free flame-retardant coatings have become the development trend of coatings, but the flame-retardant additives commonly used in halogen-free flame-retardant coatings are conventional aluminum hydroxide, magnesium hydroxide, silicate, and expanded graphite systems. When conventional magnesium hydroxide is used as When the additive is used, its flame retardant rate is low, and the required filling amount is large, usually more than 50% of the total weight of the coating to achieve the flame retardant effect

Method used

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  • Halogen-free flame-retardant silane water-based coating as well as preparation and application thereof
  • Halogen-free flame-retardant silane water-based coating as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of embodiment 1 halogen-free flame-retardant silane waterborne coating:

[0032] Raw material composition:

[0033] Tridecafluorooctyltrimethoxysilane 70 parts, aluminum oxide modified graphene oxide flame retardant 10 parts, polyvinylbenzenesulfonic acid 10 parts, hydrotalcite 20 parts, coupling agent DL171 1 part, hard 1 part of barium fatty acid, 0.01 part of nano-titanium carbide, 0.1 part of titanium dioxide and 150 parts of deionized water;

[0034] The graphene oxide flame retardant modified by aluminum oxide is prepared according to the following steps;

[0035] Raw material composition: the ratio of the amount of substances of graphene oxide, silane coupling agent KH570, and aluminum oxide is 10: 0.5: 2;

[0036] Step 1, adopting improved Hummers method to prepare graphene oxide;

[0037] Step 2. Ultrasonically disperse graphene oxide (ultrasonic condition: 700W for 30min) in absolute ethanol, raise the temperature to 50°C, add silane couplin...

Embodiment 2

[0042] Preparation of Embodiment 2 Halogen-free flame-retardant silane water-based coating:

[0043] Raw material composition:

[0044] 90 parts of tridecafluorooctyltrimethoxysilane, 20 parts of graphene oxide flame retardant modified by aluminum oxide, 20 parts of hexadecyltrimethylammonium bromide, 30 parts of hydrotalcite, coupling agent KH570 10 parts, 10 parts of cadmium stearate, 5 parts of ceramic powder, 5 parts of iron oxide red and 220 parts of deionized water;

[0045] The graphene oxide flame retardant modified by aluminum oxide is prepared according to the following steps;

[0046] Raw material composition: the ratio of the amount of substance of graphene oxide, silane coupling agent KH570, aluminum oxide is 10: 1: 5;

[0047] Step 1, adopting improved Hummers method to prepare graphene oxide;

[0048] Step 2. Ultrasonically disperse graphene oxide (ultrasonic condition: 700W for 50 min) in absolute ethanol, raise the temperature to 50°C, add silane coupling a...

Embodiment 3

[0053] The preparation of embodiment 3 halogen-free flame-retardant silane waterborne coatings:

[0054] Raw material composition:

[0055] Tridecafluorooctyltrimethoxysilane 65 parts, aluminum oxide modified graphene oxide flame retardant 15 parts, dioctyl sulfonate sodium 16 parts, hydrotalcite 25 parts, coupling agent KH550 5 parts , 5 parts of polyethylene glycol 200, 1 part of sodium polyacrylate, 1 part of chrome yellow, 1 part of iron blue and 185 parts of deionized water;

[0056] The graphene oxide flame retardant modified by aluminum oxide is prepared according to the following steps:

[0057] Raw material composition: the ratio of the amount of substances of graphene oxide, silane coupling agent KH570, and aluminum oxide is 10: 0.7: 3.5;

[0058] Step 1, adopting improved Hummers method to prepare graphene oxide;

[0059] Step 2. Ultrasonically disperse graphene oxide (ultrasonic condition: 700W ultrasonic 40min) in absolute ethanol, heat up to 50°C, add silane c...

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Abstract

The invention provides halogen-free flame-retardant silane water-based coating. The coating is prepared from, by weight, 60-70 parts of tridecafluorooctyl trimethoxysilane, 12-17 parts of an aluminumoxide modified graphene oxide flame retardant, 12-17 parts of an emulsifying agent, 22-27 parts of hydrotalcite, 2-7 parts of a coupling agent, 2-7 parts of a dispersing agent, 0.1-3 parts of a reinforcing agent, 0.5-3 parts of inorganic pigment and 170-200 parts of deionized water. According to the invention, a halogen-free formula is adopted; no secondary pollution is generated during combustion, meanwhile, a water-based fluorine-containing silane-based material is adopted; the coating has the advantages of favorable elasticity, tough and wear-resistant surfaces, excellent high / low-temperature properties, excellent water resistance, excellent ultraviolet resistance, excellent medium resistance, excellent irradiation resistance and the like, has proper viscosity, can easily adopt spray coating, dip coating, brush coating or cast coating and other operating modes, and is a widely-applied and very ideal protective material.

Description

[0001] The patent application of the present invention is the application number: "2018 1 0722343.7", the application date is June 26, 2018, and the invention name is: "A kind of halogen-free flame-retardant silane water-based coating and its preparation and application". divisional application. technical field [0002] The invention relates to the technical field of paint preparation, in particular to a halogen-free flame-retardant silane water-based paint. Background technique [0003] In recent years, with the increasing stringency of fire safety regulations, people have paid more and more attention to reducing fire hazards caused by highly flammable materials such as wood, plastics, and textiles. A suitable flame retardant can delay the ignition time of these materials or inhibit the spread of flames, thereby eliminating fire hazards and reducing loss of life and property. For a long time, people have invested a lot of energy to improve the fire performance of wood, pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/18C09D7/61
CPCC08G77/24C08K2003/2227C08L2201/02C09D4/00C09D5/18C09D183/08C09D7/61C08K9/06C08K3/042C08K3/22C08K3/26
Inventor 王春林余佳
Owner 王春林