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Metal sealing piece coating layer material and preparation method thereof

A technology for metal seals and coating materials, applied in the direction of alkali metal silicate coatings, coatings, anti-corrosion coatings, etc., can solve problems such as inability to use under high temperature conditions, low temperature resistance, and improved environmental protection requirements for engines. The preparation process is flexible and simple, the effect of preventing corrosion and good chemical stability

Inactive Publication Date: 2021-04-27
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the molybdenum disulfide system used in the coating material of metal seals of high-power engines has low temperature resistance, cannot be used under high temperature con

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, 0.1% methyl silicone oil and 42% inorganic silicone resin were mixed and stirred for 1 hour, and placed in an oil bath at 50° C. for 24 hours to react. Add 26% high temperature resistant filler (aluminum oxide: zinc oxide: boron nitride: calcium fluoride: zirconia: quartz powder = 3:8:12:32:5:6), 31.9% isopropanol, the high temperature filler , the modified binder and the solvent were mixed and ground for 30 minutes, and filtered with a 325-mesh sieve. Put the filtered paint at room temperature and seal it for more than 24 hours. After cleaning the dust, water stains, and oil stains on the surface of the seal, use a 3 mm caliber spray gun to spray a layer of boron nitride coating material of about 15 microns on the surface of the stainless steel gasket. After the coating material is naturally dried for one hour, it is placed in an oven at 150 degrees Celsius and dried for about 0.5 hour to prepare a high-temperature-resistant gasket coating materia...

Embodiment 2

[0032] At room temperature, 0.1% polyvinyl butyral and 42% inorganic silicone resin were mixed and stirred for 1 hour, and placed in an oil bath at 50° C. for 24 hours to react. Add 13% high temperature resistant filler (alumina: zinc oxide: boron nitride: calcium fluoride: zirconia: quartz = 3:10:14:62:5:6), 44.9% absolute ethanol, the high temperature filler, The modified binder and the solvent were mixed and ground for 30 minutes, and filtered through a 325-mesh screen. Put the filtered paint at room temperature and seal it for more than 24 hours. After cleaning the dust, water stains, and oil stains on the surface of the seal, use a 3 mm caliber spray gun to spray a layer of boron nitride coating material of about 30 microns on the surface of the stainless steel gasket. After the coating material is naturally dried for one hour, it is placed in an oven at 150 degrees Celsius and dried for about 0.5 hour to prepare a high-temperature-resistant gasket coating material with ...

Embodiment 3

[0034] At room temperature, 0.1% polyethylene glycol 200 and 30% inorganic silicone resin were mixed and stirred for 1 hour, and placed in an oil bath at 50° C. for 24 hours to react. Add 26% high temperature resistant filler (alumina: zinc oxide: boron nitride: calcium fluoride: zirconia: quartz = 3:10:14:62:5:6), 43.9% n-propanol, high temperature filler, The modified binder and the solvent were mixed and ground for 30 minutes, and filtered through a 325-mesh screen. After cleaning the dust, water stains, and oil stains on the surface of the seal, use a 3 mm caliber spray gun to spray a layer of boron nitride coating material of about 30 microns on the surface of the stainless steel gasket. After the coating material is naturally dried for one hour, it is placed in an oven at 100 degrees Celsius and dried for about 0.5 hour to prepare a high-temperature-resistant gasket coating material with a sealing effect. The coating material is hydrophobic and oleophobic, with a smooth...

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PUM

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Abstract

The invention discloses a metal sealing piece coating layer material and a preparation method thereof. According to the formula of the coating layer material, a high-temperature-resistant filler, an auxiliary agent and the like are added into a high-temperature-resistant binding agent containing a solvent for modification, so that the purpose of surface modification of the coating material is achieved, the prepared sealing piece coating layer material has the excellent characteristics of high temperature resistance, stable performance and the like and can be used under the high-temperature working condition of 800 DEG C, and the service life of a sealing piece is prolonged; and the preparation process disclosed by the invention only needs to be carried out in a normal-temperature environment, the formula raw materials are filtered by a standard sieve after being subjected to ball milling, the coating layer material can be prepared by adopting a spraying process, and the process is simple, convenient to operate and low in cost.

Description

technical field [0001] The invention relates to the field of sealing technology, in particular to a coating material for a metal seal and a preparation method thereof. Background technique [0002] At present, engine seals mainly include asbestos rubber composite seals, metal composite seals, and composite coating material seals. Among them, asbestos rubber seals have low temperature resistance and do not meet environmental protection requirements. The process of metal seals is complicated and the cost is high. Composite coating material seals are relatively simple in process, meet environmental protection requirements, and have broad application prospects. By preparing a high-performance coating material on the surface of the seal, it can well meet the needs of industrial applications of high-power engines and has great use value. [0003] The working conditions of high-power engine seals are complex, and they need to be applied in high-temperature, high-pressure, high-s...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D5/08C09D7/61C09D7/65C09D183/04C09D7/63
CPCC08K2003/162C08K2003/2227C08K2003/2244C08K2003/2296C08K2003/385C08L2201/08C09D1/00C09D1/04C09D5/08C09D5/18C09D183/04C09D7/61C09D7/63C09D7/65C08L71/02C08K3/22C08K3/38C08K3/16C08K3/36C08K13/02C08K5/12
Inventor 李杨牟善浩张雍魏美玲栾强程之强何子臣
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS