Water-based fireproof coating suitable for railway vehicle chassis and preparation method thereof

A rail vehicle and fireproof coating technology, applied in fireproof coatings, epoxy resin coatings, coatings, etc., can solve the problems that coatings cannot meet the structural fire resistance requirements, the large amount of harmful substances volatilized, and the construction process is complex, etc., to delay flames and heat transmission, excellent environmental performance, and excellent bonding strength

Inactive Publication Date: 2019-12-20
河北萨迪科轨道交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing coatings in the above-mentioned prior art cannot meet the structural fire resistance requirements of the rail vehicle undercarriage and the problem that the large amount of harmful substances volatilized in the construction process affects the health of the operators, and the construction process of the coating is complicated. Or need special equipment etc. to cause the problem of high cost, the present invention provides a kind of water-based fireproof coating that is applicable to rail vehicle underframe

Method used

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  • Water-based fireproof coating suitable for railway vehicle chassis and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Add 500g of epoxy / acrylic hybrid emulsion and 6g of wetting and dispersing agent into the mixing tank for low-speed dispersion and stirring for 2-5 minutes;

[0027] Step 2: While stirring and dispersing, add 30g organic bentonite, 120g titanium dioxide, 40g expandable graphite, 60g nano-aluminum magnesium hydroxide, 460g melamine phosphate, 220g dipentaerythritol, 260g melamine, 6g wetting defoamer, 20g into Membrane aid, 150g deionized water, disperse at high speed for 20-40 minutes after adding completely;

[0028] Step 3: According to the requirement of expected viscosity of 15000±1000mPa·s, add 128g of deionized water and stir to disperse;

[0029] Step 4: Put the paint obtained in the above steps into a ball mill for grinding, and use a scraper fineness meter to detect the fineness of the paint until the fineness value reaches 90um±15um, then stop grinding;

[0030] Step 5: Use a strainer to filter, separate the grinding beads and paint, put the paint int...

Embodiment 2

[0032] On the basis of Example 1, the content of catalyst melamine phosphate, charring agent dipentaerythritol, blowing agent melamine relatively increased intumescent flame retardant system, reduce the consumption of film-forming material epoxy / acrylic acid hybrid emulsion and deionized water, its The preparation method is the same as in Example 1. For the specific mass ratio of this example, refer to Formulation 2 in Table 1. The properties of the obtained coating are shown in Example 2 in Table 2.

Embodiment 3

[0034]On the basis of Example 1, further increase the content of film-forming material epoxy / acrylic acid hybrid emulsion, and relatively reduce the content of catalyst melamine phosphate, carbonizing agent dipentaerythritol, and foaming agent melamine of the intumescent flame-retardant system, and its preparation method is the same as Example 1, the specific mass ratio of this example is shown in Formulation 3 in Table 1, and the properties of the obtained coating are shown in Example 3 in Table 2.

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Abstract

The invention relates to a water-based fireproof coating suitable for railway vehicle chassis and a preparation method thereof, and belongs to the field of water-based fireproof coating. The water-based fireproof coating disclosed by the invention is prepared from the following substances in parts by mass: 20-30 parts of a film-forming substance, 40-60 parts of an intumescent flame-retardant system, 5-8 parts of titanium dioxide, 2-4 parts of nano magnesium aluminum hydroxide, 1-2 parts of organic bentonite, 1-3 parts of expandable graphite, 9-17 parts of deionized water, 0.8-1.3 parts of a film-forming aid, 0.2-0.5 part of a dispersing agent and 0.2-0.5 part of a defoaming agent; the intumescent flame-retardant system is prepared from melamine phosphate, dipentaerythritol and melamine, and the mass part ratio of the melamine phosphate to the dipentaerythritol to the melamine is 1.8-2.3: 0.8-1.2: 0.8-1.2. The water-based fireproof coating can met structure fire-resistant requirement of the chassis of the railway vehicles; no volatilization of harmful substances such as organic solvents is caused in the construction and drying processes; the occupational health and safety of constructors are guaranteed; equipment can be flexibly selected for use according to different scenes; investment of special equipment is reduced; and production cost is reduced.

Description

technical field [0001] The invention belongs to the field of water-based fireproof coatings, and in particular relates to a water-based fireproof coating suitable for rail vehicle underframes and a preparation method thereof. Background technique [0002] China's rail transit has become the first choice for people's daily travel because of its advantages of speed, safety, punctuality, energy saving, environmental protection and comfort. During the operation of rail vehicles, the main danger is train overturning and fire. Therefore, improving the fire prevention capability of rail vehicles has become an important task for vehicle manufacturers. It can prevent the fire outside the vehicle from spreading to the inside of the vehicle, isolate the fire source, prolong the fire time inside the vehicle and increase the heat insulation performance to delay the damage of the underframe structure of the vehicle body, thereby prolonging the escape time of passengers and ensuring the sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D133/04C09D5/18C09D7/61C09D7/63C09D7/20
CPCC08K2003/2224C08K2003/2227C08K2003/323C08K2201/011C08L2201/02C09D5/185C09D133/04C09D163/00C09D7/20C09D7/61C09D7/63C08L33/04C08K13/06C08K3/22C08K7/24C08K5/34928C08K5/06C08K5/34922C08K3/32
Inventor 刘鸿雁
Owner 河北萨迪科轨道交通科技有限公司
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