Smokeless and odorless inorganic nano high temperature resistant anticorrosion and wear-resistant coating and preparation method thereof

Abstract

The invention discloses a smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint and a preparation method thereof. The wear-resistant paint comprises an inorganic nano resin and a mixed solvent, wherein the inorganic nano resin is prepared from the following components in percentage by weight: 30-90% of silicon dioxide, 10-70% of silane, 0.1-10% of pH value regulator and 0.01-1% of accelerator HMT (hexamethylenetetramine); and the mixed solvent is prepared from high-temperature-resistant environment-friendly pigment, filler, ethanol and water. The preparation method comprises the following steps: mixing the nano silicon dioxide dispersion with different particle sizes, adding the pH regulator and mixed silanes, carrying out thermostatic reaction, adding the metered accelerator HMT, and keeping the temperature to react, thereby obtaining the inorganic nano resin; and mixing the prepared inorganic nano resin and the mixed solvent, dispersing with a high-speed dispersion machine at high speed, and grinding to obtain the smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint. The smokeless smellless inorganic nano high-temperature-resistant corrosion-resistant wear-resistant paint is smokeless, smellless and environment-friendly, does not discolor, has high wear resistance, and has favorable functions of corrosion resistance and rust prevention.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a smokeless and odorless inorganic nanometer high-temperature-resistant anti-corrosion and wear-resistant coating and a preparation method thereof. Background technique [0002] Wear-resistant coatings are mainly used in high-temperature anti-corrosion and wear-resistant protection of construction machinery and automobile exhaust pipes; anti-corrosion and flame-retardant protection of steel structures; wear-resistant, flame-resistant and fire-resistant protection of decorative panels in subways and tunnels; gas water exchangers , Heat-resistant and anti-corrosion protection of boiler heat exchangers; wear-resistant, anti-corrosion and flame-retardant protection of burners, fireplaces and kitchen utensils in contact with open flames. [0003] CN101503598A discloses a solvent-type organosilicon flame-resistant coating, which can withstand 500-800 degrees. There is no...

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Problems solved by technology

[0004] CN100587017C discloses a solvent-based organosilicon ultra-high-temperature resistant coating and its production method, which can withstand high temperatures of 450-500 degrees, but the pyrolysis of organic resins will still produce some pungent and toxic odors, and will change color

Can only do very few colors of black and silver black, can not do light and bright colors

[0005] CN102030906A discloses the preparation of an organic-machine hybrid resin for high-temperature-resistant heavy-duty anti-corrosion coatings, which can withstand a certain high temperature, but does not specify how much high temperature it can withstand, and cannot be used at 600-800 degrees for a long time

At the same time, due to the use of a large amount of epoxy silane monomer in the formula, it is easy to yellow when it exceeds 280 degrees

[0006] CN102351497A discloses a high-temperature-resistant environment-friendly nano-modified inorganic coating and its preparation method and application. It can withstand high temperatures of 700-1000 degrees, but the film thickness must be as high as 45-80um to have good high-temperature resistance and anti-corrosion performance, and it is only suitable for alloy parts. It has excellent high-temperature anti-corrosion effect, but it has poor protection effect on ordinary steel parts. At the same time, aluminum tripolyphosphate and zinc powder are added to the coating as the curing agent of potassium silicate coating, which will cause the coating to have a very short shelf life. When configuring the coating , must be used up as soon as possible, otherwise it will be gelled and scrapped, causing losses

[0007] CN102190940A discloses a high-temperature-resistant anti-corrosion coating for engineering machinery exhaust pipes, which can only withstand a temperature of 500 degrees, and can only be made in black, and will produce a large amount of pungent odor at high temperatures

[0008] CN102167570A discloses a composite nano high-temperature coating and its preparation method and application method. The process is cumbersome and takes a long time. It must be aged for 7-10 days before entering the next process.

However, due to the use of siloxane-modified acrylic resin as the base material, it is prone to yellowing at high temperatures and can only be made into silver black. At the same time, the coating is anti-corrosion by adding up to 35% aluminum powder to achieve high-temperature melting and secondary film formation. Because a large amount of aluminum powder will soften and melt at high temperature, the coating has no thermal hardness, and the wear resistance is extremely poor at high temperature. At the same time, special ultrasonic vibration is used for coating. Compared with the conventional process, it is extremely inconvenient for customers to use.

And the paint also uses some toxic trimethylbenzene as solvent, which is not environmentally friendly

[0010] The above organic or inorganic high-temperature-resistant coatings have poor high-temperature and anti-corrosion effects and poor wear-resisting effects when thinly applied.

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