CN112662206A - Ceramic coating for coating surface of sealing element of silencer and using method - Google Patents
Ceramic coating for coating surface of sealing element of silencer and using method Download PDFInfo
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- CN112662206A CN112662206A CN202011349641.XA CN202011349641A CN112662206A CN 112662206 A CN112662206 A CN 112662206A CN 202011349641 A CN202011349641 A CN 202011349641A CN 112662206 A CN112662206 A CN 112662206A
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Abstract
The invention discloses a ceramic coating for coating the surface of a sealing element of a silencer and a using method thereof, and the ceramic coating comprises 10-18 parts of ceramic powder, 5-12 parts of perlite powder, 1-4 parts of a dispersing agent, 2-5 parts of a defoaming agent, 20-23 parts of water, 10-12 parts of boron carbide, 12-14 parts of calcium aluminate cement, 5-8 parts of a bonding agent, 80-100 parts of dimethylbenzene, 25-35 parts of benzoin ethyl ether, 35-45 parts of dibenzoyl peroxide, 1-5 parts of a cross-linking agent and 10-20 parts of mercaptopropyl methyl dimethoxysilane. The ceramic coating has excellent wear resistance and stable property, can enhance the sealing performance after being coated on a sealing element, and avoids being worn, thereby solving the problem that the existing ceramic coating has poor wear resistance and is easy to reduce the sealing performance in the use process.
Description
Technical Field
The invention relates to the field of ceramic coatings, in particular to a ceramic coating for coating the surface of a sealing element of a silencer and a using method thereof.
Background
The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers.
The wear resistance of the coating of the sealing ring of the muffler on the current market is not good, so that the sealing performance is easily reduced in the using process.
Disclosure of Invention
The invention aims to provide a ceramic coating for coating the surface of a sealing element of a silencer and a using method thereof, and aims to solve the problem that the sealing performance is easily reduced in the using process due to poor wear resistance of the existing ceramic coating.
In order to achieve the above object, the present invention provides, in a first aspect, a ceramic paint for surface coating of a sealing member of a muffler, comprising, by weight: 10-18 parts of ceramic powder, 5-12 parts of perlite powder, 1-4 parts of dispersing agent, 2-5 parts of defoaming agent, 20-23 parts of water, 10-12 parts of boron carbide, 12-14 parts of calcium aluminate cement, 5-8 parts of adhesive, 80-100 parts of xylene, 25-35 parts of benzoin ethyl ether, 35-45 parts of dibenzoyl peroxide, 1-5 parts of cross-linking agent and 10-20 parts of mercaptopropyl methyl dimethoxysilane.
Wherein the ceramic powder comprises zirconium oxide, silicon carbide, calcium fluoride, zinc oxide and magnesium oxide.
Wherein the defoaming agent comprises polydimethylsiloxane solution and mineral oil.
Wherein the adhesive comprises organic silicon resin, a silane reagent, n-butyl alcohol, butyl acetate and dibutyl phthalate.
In a second aspect, the present invention provides a method of using a ceramic coating for surface coating of a sealing element of a muffler, comprising: preparing a ceramic coating; cleaning the sealing element; spraying ceramic paint on the surface of the sealing element to form a coating; extruding the coating to compact, clean and smooth; and naturally drying for 12-24 h.
The preparation method of the ceramic coating comprises the following specific steps: uniformly stirring and mixing ceramic powder, perlite powder and calcium aluminate cement to form first powder; adding a dispersing agent, water and a defoaming agent into the first powder to prepare a suspension, and then ultrasonically stirring for 10-15min to form a dispersion liquid; sintering the dispersion liquid in a sintering furnace to form a solid object; crushing the solid, adding xylene, benzoin ethyl ether, dibenzoyl peroxide, a cross-linking agent, a bonding agent and mercaptopropyl methyldimethoxysilane, and uniformly stirring; adding the mixture into a ball mill for ball milling to obtain the ceramic coating.
Wherein the conditions for sintering the dispersion in the sintering furnace to form a solid are as follows: sintering at 1400-1400 deg.c in air environment for 4-6 hr.
The specific parameters of adding the ceramic coating into a ball mill for ball milling to obtain the ceramic coating are as follows: ball milling is carried out for 15-25 min at a rotating speed of 130-150 pm.
The invention relates to a ceramic coating for coating the surface of a sealing element of a silencer and a using method thereof. The material has the characteristics of light apparent density, low heat conductivity coefficient, good chemical stability, wide use temperature range, small moisture absorption capacity, no toxicity, no smell, fire prevention, sound absorption and the like; the dispersant is a surfactant which has two opposite properties of lipophilicity and hydrophilcity in a molecule. Solid and liquid particles of inorganic and organic pigments which are difficult to dissolve in liquid can be uniformly dispersed, and simultaneously, sedimentation and agglomeration of the particles can be prevented, so that the powder can be stably dispersed, thereby being more beneficial to mixing; the defoaming agent can reduce the surface tension of water, solution, suspension and the like, prevent the formation of foam, or reduce or eliminate the original foam, thereby avoiding the formation of foam in the stirring process, and the hardness of boron carbide is very high, so that the abrasion resistance of the sealing element can be improved; calcium silicate cement is used as a bonding agent which can improve the friction performance, the bonding agent is used for bonding various substances together and strengthening the bonding effect, xylene and benzoin ethyl ether are used as solvents, and mercaptopropyl methyldimethoxysilane can bond inorganic fillers (such as white carbon black, pottery clay, mica and the like) and rubber chemical bonds. The inorganic filler reinforced sealing element has the advantages that the mechanical performance of the inorganic filler reinforced sealing element is improved, the cross-linking agent is also called as a curing agent, the reaction is irreversible, the reacted substance is more stable, the whole ceramic coating has excellent wear-resisting performance and stable property, the sealing performance can be enhanced after the inorganic filler reinforced sealing element is coated on the sealing element, the ceramic coating is prevented from being abraded, and the problems that the existing ceramic coating is poor in wear-resisting performance, and the sealing performance is easily reduced in the using process are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of using a ceramic coating for surface coating of muffler sealing elements in accordance with the present invention;
FIG. 2 is a flow chart for preparing a ceramic coating according to the present invention;
FIG. 3 is a flow chart of the present invention for cleaning the sealing element;
FIG. 4 is a flow chart of the present invention for pulverizing solid and adding xylene, benzoin ethyl ether, benzoyl peroxide, cross-linking agent, binder and mercaptopropyl-methyldimethoxysilane, stirring and mixing.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In a first aspect, the present invention provides a ceramic coating for coating the surface of a sealing element of a muffler, which comprises the following components by weight: 10-18 parts of ceramic powder, 5-12 parts of perlite powder, 1-4 parts of dispersing agent, 2-5 parts of defoaming agent, 20-23 parts of water, 10-12 parts of boron carbide, 12-14 parts of calcium aluminate cement, 5-8 parts of adhesive, 80-100 parts of xylene, 25-35 parts of benzoin ethyl ether, 35-45 parts of dibenzoyl peroxide, 1-5 parts of cross-linking agent and 10-20 parts of mercaptopropyl methyl dimethoxysilane.
In the present embodiment, the ceramic powder is used as the main material, and the perlite raw sand is finely crushed and ultra-finely crushed, and expanded to become a novel lightweight multifunctional material. The material has the characteristics of light apparent density, low heat conductivity coefficient, good chemical stability, wide use temperature range, small moisture absorption capacity, no toxicity, no smell, fire prevention, sound absorption and the like; the dispersant is a surfactant which has two opposite properties of lipophilicity and hydrophilcity in a molecule. Solid and liquid particles of inorganic and organic pigments which are difficult to dissolve in liquid can be uniformly dispersed, and simultaneously, sedimentation and agglomeration of the particles can be prevented, so that the powder can be stably dispersed, thereby being more beneficial to mixing; the defoaming agent can reduce the surface tension of water, solution, suspension and the like, prevent the formation of foam, or reduce or eliminate the original foam, thereby avoiding the formation of foam in the stirring process, and the hardness of boron carbide is very high, so that the abrasion resistance of the sealing element can be improved; calcium silicate cement is used as a bonding agent which can improve the friction performance, the bonding agent is used for bonding various substances together and strengthening the bonding effect, xylene and benzoin ethyl ether are used as solvents, and mercaptopropyl methyldimethoxysilane can bond inorganic fillers (such as white carbon black, pottery clay, mica and the like) and rubber chemical bonds. The inorganic filler reinforced sealing element has the advantages that the mechanical performance of the inorganic filler reinforced sealing element is improved, the cross-linking agent is also called as a curing agent, the reaction is irreversible, the reacted substance is more stable, the whole ceramic coating has excellent wear-resisting performance and stable property, the sealing performance can be enhanced after the inorganic filler reinforced sealing element is coated on the sealing element, the ceramic coating is prevented from being abraded, and the problems that the existing ceramic coating is poor in wear-resisting performance, and the sealing performance is easily reduced in the using process are solved.
Further, the ceramic powder comprises zirconium oxide, silicon carbide, calcium fluoride, zinc oxide and magnesium oxide.
In the embodiment, zirconia, silicon carbide, calcium fluoride, zinc oxide and magnesium oxide are all main ceramic materials, and the wear resistance of the ceramic can be enhanced by mixing the main ceramic materials, so that the using effect is better.
Further, the defoaming agent comprises polydimethylsiloxane solution and mineral oil.
In the present embodiment, the chemical state dimethicone of polydimethylsiloxane is, depending on the relative molecular mass, from colorless and transparent volatile liquid to extremely high viscosity liquid or silicone, and is tasteless, highly transparent, heat-resistant, cold-resistant, low in viscosity change with temperature, water-resistant, low in surface tension, and heat-conductive, and has a thermal conductivity of 0.134-0.159W/M × K, and a light transmittance of 100%, and the dimethicone is nontoxic, tasteless, physiologically inert, and has good chemical stability. Mineral oil refers to a mixture of refined liquid hydrocarbons obtained from petroleum, mainly a mixture of saturated naphthenic and paraffinic hydrocarbons, and crude oil is subjected to atmospheric and vacuum fractionation, solvent extraction and dewaxing, and hydrofinishing to enhance defoaming capability and greatly reduce the generation of bubbles.
Further, the adhesive comprises organic silicon resin, a silane reagent, n-butyl alcohol, butyl acetate and dibutyl phthalate.
In the present embodiment, the silicone resin is used as a main component of the adhesive, n-butanol is used as a solvent, and a silane agent, butyl acetate, and dibutyl phthalate are used as plasticizers to enhance the adhesive properties.
In a second aspect, referring to fig. 1 to 4, the present invention further provides a method for using a ceramic coating for coating a surface of a sealing element of a muffler, including:
s101, preparing a ceramic coating;
the method comprises the following specific steps:
s201, uniformly stirring and mixing ceramic powder, perlite powder and calcium aluminate cement to form first powder;
ceramic powder, perlite powder and calcium aluminate cement are all solid powder, and the solid powder, the perlite powder and the calcium aluminate cement are fully mixed, so that the texture is more uniform, and the uneven distribution after the liquid is mixed is avoided, thereby improving the uniformity of the coating.
S202, adding a dispersing agent, water and a defoaming agent into the first powder to prepare a suspension, and then ultrasonically stirring for 10-15min to form a dispersion liquid;
the first powder is dissolved in water, then the powder is uniformly dispersed in the water through the dispersing agent, and the bubbles generated in the ultrasonic stirring process are reduced through the defoaming agent, so that the first powder can be more uniformly suspended in the dispersion liquid,
s203, sintering the dispersion liquid in a sintering furnace to form a solid object;
with the following conditions: sintering at 1400-1400 deg.c in air environment for 4-6 hr. The uniformly dispersed powder can be remained by sintering, and then the next operation can be carried out.
S204, crushing the solid, adding xylene, benzoin ethyl ether, benzoyl peroxide, a cross-linking agent, a bonding agent and mercaptopropyl methyldimethoxysilane, and uniformly stirring;
the method comprises the following specific steps:
s401, crushing the solid substances by using a crusher, and sieving by using a sieve of 400-500 meshes;
the solid objects can be crushed by the crusher and then screened by the sieve, and the sieved objects meet the requirements.
S402, crushing and sieving the solid substances left on the sieve again;
the large particles left on the screen need to be crushed again and sieved again, so that the crushing precision of the solid objects is improved, and the solid objects can be dispersed more uniformly in the subsequent process.
S403, adding dimethylbenzene and benzoin ethyl ether, heating at 40-45 ℃ for 10-14min, and uniformly stirring;
wherein, the dimethylbenzene and benzoin ethyl ether are used as solvents, so that the crushed solid can be more fully dissolved.
S404, adding the benzoyl peroxide, the cross-linking agent, the adhesive and the mercaptopropyl methyl dimethoxy silane again and stirring uniformly.
The adhesive, the cross-linking agent and the mercaptopropyl methyl dimethoxy silane are used for enhancing the bonding effect, so that the powder can be bonded together more uniformly to form the stable ceramic coating.
S205 is added into a ball mill for ball milling to obtain the ceramic coating.
The specific parameters are as follows: ball milling is carried out for 15-25 min at a rotating speed of 130-150 pm. More uniform particle powdery substances can be formed after ball milling by a ball mill, and the uniformity of the ceramic coating is improved.
S102, cleaning the sealing element;
the method comprises the following specific steps:
s301, carrying out fine sand blasting on the surface of the sealing element;
through the mode of sandblast, can strike the not strong material of sealing element surface adsorption to can drop, avoid remaining impurity to influence the adhesion property of coating on sealing element.
S302, carrying out rust removal and descaling treatment on the surface of the sealing element.
The surface of the sealing member is blown with high-pressure gas so that other impurities adhering to the surface of the member can be removed.
S103, spraying ceramic paint on the surface of the sealing element to form a coating;
the sealing element surface is sprayed with a spray gun to obtain a ceramic coating.
S104, extruding, compacting, polishing and smoothing the coating;
the sealing element is placed in a high-pressure environment to compact the coating and then push it flat, so that the adhesion can be further increased.
S105, naturally drying for 12-24 hours.
Naturally drying to volatilize the water and the solvent, and finishing the coating covering.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A ceramic coating for coating the surface of sealing element of silencer is characterized by that,
the components of the composition by weight are as follows: 10-18 parts of ceramic powder, 5-12 parts of perlite powder, 1-4 parts of dispersing agent, 2-5 parts of defoaming agent, 20-23 parts of water, 10-12 parts of boron carbide, 12-14 parts of calcium aluminate cement, 5-8 parts of adhesive, 80-100 parts of xylene, 25-35 parts of benzoin ethyl ether, 35-45 parts of dibenzoyl peroxide, 1-5 parts of cross-linking agent and 10-20 parts of mercaptopropyl methyl dimethoxysilane.
2. A ceramic coating for surface coating a muffler sealing element according to claim 1,
the ceramic powder comprises zirconium oxide, silicon carbide, calcium fluoride, zinc oxide and magnesium oxide.
3. A ceramic coating for surface coating a muffler sealing element according to claim 1,
the defoaming agent comprises polydimethylsiloxane solution and mineral oil.
4. A ceramic coating for surface coating a muffler sealing element according to claim 1,
the adhesive comprises organic silicon resin, a silane reagent, n-butyl alcohol, butyl acetate and dibutyl phthalate.
5. A method for using ceramic paint for coating the surface of sealing element of silencer is characterized by that,
the method comprises the following steps: preparing a ceramic coating;
cleaning the sealing element;
spraying ceramic paint on the surface of the sealing element to form a coating;
extruding the coating to compact, clean and smooth;
and naturally drying for 12-24 h.
6. The method of using a ceramic coating for surface coating of muffler sealing elements according to claim 5,
the concrete steps for preparing the ceramic coating are as follows:
uniformly stirring and mixing ceramic powder, perlite powder and calcium aluminate cement to form first powder;
adding a dispersing agent, water and a defoaming agent into the first powder to prepare a suspension, and then ultrasonically stirring for 10-15min to form a dispersion liquid;
sintering the dispersion liquid in a sintering furnace to form a solid object;
crushing the solid, adding xylene, benzoin ethyl ether, dibenzoyl peroxide, a cross-linking agent, a bonding agent and mercaptopropyl methyldimethoxysilane, and uniformly stirring;
adding the mixture into a ball mill for ball milling to obtain the ceramic coating.
7. The use of a ceramic coating for the surface coating of muffler sealing elements according to claim 6,
the conditions for sintering the dispersion in the sintering furnace to form a solid are as follows: sintering at 1400-1400 deg.c in air environment for 4-6 hr.
8. The use of a ceramic coating for the surface coating of muffler sealing elements according to claim 6,
the specific parameters of adding the ceramic coating into a ball mill for ball milling to obtain the ceramic coating are as follows: ball milling is carried out for 15-25 min at a rotating speed of 130-150 pm.
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| CN202011349641.XA CN112662206A (en) | 2020-11-26 | 2020-11-26 | Ceramic coating for coating surface of sealing element of silencer and using method |
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| CN202011349641.XA CN112662206A (en) | 2020-11-26 | 2020-11-26 | Ceramic coating for coating surface of sealing element of silencer and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115058194A (en) * | 2022-07-15 | 2022-09-16 | 武汉东臻科技有限公司 | Ceramic anticorrosive paint and preparation method thereof |
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| CN106007678A (en) * | 2016-05-18 | 2016-10-12 | 南京可赛新新型材料有限公司 | Ceramic coating with high-temperature resistance and wear resistance and preparation method of ceramic coating |
| CN108456222A (en) * | 2017-02-17 | 2018-08-28 | 中卫市创科知识产权投资有限公司 | A kind of gamma-mercaptopropyltriethoxysilane production technology |
| CN109233619A (en) * | 2018-07-18 | 2019-01-18 | 安徽诺辰新型材料有限公司 | Nano ceramics water paint |
| US20200017714A1 (en) * | 2018-07-16 | 2020-01-16 | Wisconsin Alumni Research Foundation | Thermal barrier coatings containing aluminosilicate particles |
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2020
- 2020-11-26 CN CN202011349641.XA patent/CN112662206A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530406A (en) * | 2003-03-12 | 2004-09-22 | 中 徐 | Ceramic thermal insulative pigment |
| CN106007678A (en) * | 2016-05-18 | 2016-10-12 | 南京可赛新新型材料有限公司 | Ceramic coating with high-temperature resistance and wear resistance and preparation method of ceramic coating |
| CN108456222A (en) * | 2017-02-17 | 2018-08-28 | 中卫市创科知识产权投资有限公司 | A kind of gamma-mercaptopropyltriethoxysilane production technology |
| US20200017714A1 (en) * | 2018-07-16 | 2020-01-16 | Wisconsin Alumni Research Foundation | Thermal barrier coatings containing aluminosilicate particles |
| CN109233619A (en) * | 2018-07-18 | 2019-01-18 | 安徽诺辰新型材料有限公司 | Nano ceramics water paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115058194A (en) * | 2022-07-15 | 2022-09-16 | 武汉东臻科技有限公司 | Ceramic anticorrosive paint and preparation method thereof |
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