CN102719193B - High-temperature resistant coating - Google Patents
High-temperature resistant coating Download PDFInfo
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- CN102719193B CN102719193B CN201210216003.XA CN201210216003A CN102719193B CN 102719193 B CN102719193 B CN 102719193B CN 201210216003 A CN201210216003 A CN 201210216003A CN 102719193 B CN102719193 B CN 102719193B
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Abstract
The invention provides a high-temperature resistant coating which comprises, by weight, 15%-50% of epoxy modified organic silicon resins, 5%-15% of high-temperature resistant composite inorganic pigments, 10%-20% of silicate fillers, 3%-10% of rust resisting pigments, 5%-20% of mixed type glass powders free from lead and boron, 1%-8% of adhesion promoters and 5%-40% of viscosity regulation solvents. The high-temperature resistant coating has the advantages of being easy to solidify at normal temperatures, high in hot and cold alternation resistant capacity, adhesive forces of coating films and high temperature corrosion resistant capacity, difficult to crack, convenient to prepare and use and energy-saving.
Description
Technical field
The present invention relates to field of material technology, refer to a kind of high-temperature resistant coating especially.
Background technology
Along with modern industry and national defense construction (as space flight, aviation, weapons etc.) industry fast development, more and more higher to the requirement of equipment high-temperaure coating, require at high temperature paint film nondiscoloration, do not come off, still can keep good physical and mechanical properties and antiseptic property.
High-temperature resistant coating is widely used in iron and steel chimney, high-temperature pipe, High Temperature Furnaces Heating Apparatus shell, petroleum cracking device and the high temperature such as tank, cannon place, delays the hot hydrogenation corrosion at high temperature of the hardwares such as iron and steel, guarantees equipment energy life-time service.
A lot of to the report of heat resisting coating at present, and the heat resistance of existing high-temperature resistant coating can reach service requirements substantially, but all there are some shortcomings.As long in paint film surface drying time, cause in use because of cause influence paint film appearances such as dusts.The high-temperature coatings of single component all needs hot setting (usual 180 ~ 200 degree, 1 ~ 2 hour), and in production and application process, energy consumption is large, can not construct for main equipment., although two-pack high-temperature coatings can ambient cure, save energy, construction is inconvenient, and waste is large.Paint film adhesion is poor in addition, paint film cold-hot alternately not all right, easily chap, the shortcoming such as corrosion-resistant under high temperature.
Summary of the invention
The present invention proposes a kind of high-temperature resistant coating, and solving conventional high-temperature resistant coating in prior art needs hot setting, paint film base material poor adhesive force, paint film cold-hot alternately poor, the problem of corrosion-resistant under easy be full of cracks, high temperature.
Technical scheme of the present invention is achieved in that a kind of high-temperature resistant coating, comprising weight percent is: the epoxy modified silicone resin of 15% ~ 50%, the composite inorganic pigment of 5% ~ 15%, the silicate filler of 10% ~ 20%, the rust-stabilising pigment of 3% ~ 10%, the mixed type of 5% ~ 20% is without nonex powder, and the adhesion promoter of 1% ~ 8%, the viscosity of 5% ~ 40% adjusts solvent.
Further, described composite inorganic pigment is Yellow10C112 or Blue385 or yellow29, and its weight percent is 8% ~ 10%, composite inorganic pigment mainly provides the painted of coating, also as metal oxide can at high temperature a small amount of hydroxyl on the surface such as catalyzed mica powder, talcum powder and the functional group of silicone resin react and in main chain, form metal siloxane structure, certainly, described composite inorganic pigment is not limited to above several, can select other pigment formula according to different needs.
Further, described silicate filler is one or more in talcum powder, mica powder, kaolin, asbestos powder, kaolin, ceramic clay.
Further, described silicate filler is talcum powder and mica powder, described talcous weight percent is 2% ~ 6%, the weight percent of described mica powder is 8% ~ 16%, the brushing base material of described high-temperature resistant coating is all the metal that the coefficient of expansion is very large, the coefficient of expansion of coating should as far as possible with the matched expansion coefficient of metal.Talcum powder linear expansivity is very large, but volumetric expansion dilution is very little, therefore talcous interpolation can change the linear expansivity of coating, improve the anti-be full of cracks performance under the room temperature alternation performance of coating and high temperature, sedimentation when coating stores can be slowed down simultaneously, and can coating flowing hanging be prevented, improve water tolerance, the wear resistance of film, talcous optimum amount is between 2% ~ 6%.Mica powder can significantly improve paint film strength and resistance to chalking, and the optimum amount of mica powder is between 8% ~ 16%.
Further, described rust-stabilising pigment is Heucophos ZPO, its weight percent is 5% ~ 6%, Heucophos ZPO, it is a kind of organically-modified alkali formula zinc orthophosphate hydrate, can improve the cohesive force between metal base and coating, significantly increase the corrosion resistance nature of coating, described rust-stabilising pigment is not limited to Heucophos ZPO too, also can change according to the actual needs.
Further, described mixed type without nonex powder comprise fusing point 430 degree without nonex powder and fusing point 650 degree without nonex powder, described mixed type is 14% ~ 18% without the weight percent of nonex powder, and described fusing point 430 degree be 2: 3 without nonex powder and described fusing point the ratio without nonex powder of 650 degree, silicone resin has the backbone structure with the same Si ~ O ~ Si of glass and connects methyl, the side chain organo-functional groups such as phenyl, rupture at 400 ~ 500 degree of side chain organo-functional groups that are heated, and silicon-oxygen backbone (Si ~ O ~ Si) is not destroyed substantially, Si is wherein all inorganic nature silicon.Described fusing point 430 degree without the melting in this temperature range of nonex powder, fill up silicone resin side chain decompose after the cavity that stays, replace silicone resin at high temperature to play cohesive action.600 ~ 700 degree time, described fusing point 650 degree without nonex powder continue melting, the high-temperature resisting pigment in silicone resin and coating, filler etc. is replaced to adhere to each other completely at the glass powder of hot stage melting, form inorganic type metal silica reticulated structure, now filmogen transfers to for inorganic type by organic forms, the new inorganic type coating that final formation one deck is complete, fine and close, sticking power is good.
Further; described adhesion promoter is compound bifunctional silane; its weight percent is 3% ~ 5%; described compound bifunctional silane has high reactive behavior, high thermal resistance and good preservation stability; metal base and epoxy modified silicone resin can bind together by it; form permanent chemical bonding, thus form efficient barrier layer, protection base material is not by the impact of corrosive atmosphere.
Further, described viscosity adjustment solvent is the one or more than one in toluene, dimethylbenzene, trimethylbenzene, N-BUTYL ACETATE, propyl carbinol.
Further, described viscosity adjustment solvent is dimethylbenzene, toluene, trimethylbenzene, and its part by weight is 5: 4: 1.
Embodiment
For understanding the present invention better; below by nine embodiments, elaboration concrete is further done to the present invention; but unintelligible is limitation of the invention; for some nonessential improvement and adjustment that those skilled in the art does according to foregoing invention content, be also considered as dropping in protection scope of the present invention.
Embodiment 1:
Formula and technique see the following form:
Embodiment 2
Formula and technique see the following form:
Embodiment 3
Formula and technique see the following form:
Embodiment 4
Formula and technique see the following form:
Embodiment 5
Formula and technique see the following form:
Embodiment 6
Formula and technique see the following form:
Embodiment 7
Formula and technique see the following form:
Embodiment 8
Formula and technique see the following form:
Embodiment 9
Formula and technique see the following form:
High-temperature resistant coating prepared by embodiment 1 to embodiment 9 to be coated on steel sheet [steel sheet be smooth, without the mechanical defect such as impression and pit, be of a size of 50*120*1mm (by GB GB1735 ~ 79), steel sheet carries out oil removing, rust cleaning guarantee surface of thin steel sheet is clean, dry], ambient temperatare puts the test of solidifying laggard line correlation performance for 24 hours.
Stability in storage, sticking power (GB1720 ~ 89), shock strength (GB/T1732 ~ 1993), time of drying (GB1728 ~ 1979) etc. are all tested by concerned countries standard.
High thermal resistance is tested: be put into by model in retort furnace, be warmed up to 800 degree, places after 10 hours and takes out, cool to room temperature, observe specimen surface situation, as without pull-away, be full of cracks situation, paint film resistance toheat good (GB1735 ~ 89) is described.
Cold-hot alternation performance test: be put into by model in retort furnace, is warmed up to 800 degree, is incubated 10 hours, takes out, and putting into cold water and soak 1 hour, is 1 cycle.In 5 cycles repeatedly, observe paint film change.As but without pull-away, be full of cracks situation, illustrate that paint film cold-hot alternation is functional.
Erosion resistance is tested: model is put into salt fog machine, do spray testing with the NaCL solution of 5%, observation model whether bubbling, get rusty (GB/T1771 ~ 91).
By above testing method, embodiment 1 is to the following table with test results of embodiment 9 test-results:
As can be seen from table with test results:
1, in the present invention, with reference to embodiment 2, if epoxy modified silicone resin does not add adhesion promoter, paint film room temperature will be caused to solidify, can only solidify by high bake, but do not affect the resistance to elevated temperatures of coating, with reference to embodiment 3, adding too much adhesion promoter, shortening causing the storage characteristics of coating.
2, in the present invention, with reference to embodiment 1, if do not add rust-stabilising pigment, significantly decline causing the high-temperature corrosion resistance performance of coating.
3, in the present invention, with reference to embodiment 5, reduce mixed type without nonex powder, under high temperature, the cohesive strength of high-temperature resistant coating is inadequate, cannot reach 800 degree by causing the heat resistance of coating.
4, in the present invention, with reference to embodiment 4, reduce amount of talc, will cause the cold-hot alternation degradation of coating, under high temperature there is be full of cracks in paint film.
5, in the present invention, with reference to other embodiments, when the use of each component is all in the content range that the present invention limits, compared to other conventional coating, its at ambient cure, paint film base material sticking power, paint film cold-hot alternately, erosion resistance under anti-be full of cracks, high temperature, storage etc. are all had outstanding performance, be a kind of well high-temperature resistant coating, produce relatively simple, save energy.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (8)
1. a high-temperature resistant coating, it is characterized in that, comprise: weight percent is: the epoxy modified silicone resin of 15% ~ 50%, 5% ~ 15% composite inorganic pigment, 10% ~ 20% silicate filler, the rust-stabilising pigment of 3% ~ 10%, 14% ~ 18% mixed type is without nonex powder, 1% ~ 8% adhesion promoter, the viscosity adjustment solvent of 5% ~ 40%, described mixed type without nonex powder comprise fusing point 430 degree without nonex powder and fusing point 650 degree without nonex powder, and described fusing point 430 degree be 2: 3 without nonex powder and described fusing point at the part by weight without nonex powder of 650 degree.
2. high-temperature resistant coating as described in claim 1, it is characterized in that: described composite inorganic pigment is Yellow10C112 or Blue385 or yellow29, and its weight percent is 8% ~ 10%.
3. as described in claim 1 high-temperature resistant coating, is characterized in that: described silicate filler is one or more in talcum powder, mica powder, kaolin, asbestos powder, kaolin, ceramic clay.
4. high-temperature resistant coating as described in claim 1, it is characterized in that: described silicate filler is talcum powder and mica powder, described talcous weight percent is 2% ~ 6%, and the weight percent of described mica powder is 8% ~ 16%.
5. high-temperature resistant coating as described in claim 1, it is characterized in that: described rust-stabilising pigment is Heucophos ZPO, its weight percent is 5% ~ 6%.
6. high-temperature resistant coating as described in claim 1, it is characterized in that: described adhesion promoter is compound bifunctional silane, its weight percent is 3% ~ 5%.
7. high-temperature resistant coating as described in claim 1, is characterized in that: described viscosity adjustment solvent is one or more than one in toluene, dimethylbenzene, trimethylbenzene, N-BUTYL ACETATE, propyl carbinol.
8. high-temperature resistant coating as described in claim 1, is characterized in that: described viscosity adjustment solvent is dimethylbenzene, toluene, trimethylbenzene, and its part by weight is 5: 4: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210216003.XA CN102719193B (en) | 2012-06-27 | 2012-06-27 | High-temperature resistant coating |
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| CN201210216003.XA CN102719193B (en) | 2012-06-27 | 2012-06-27 | High-temperature resistant coating |
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| CN102719193A CN102719193A (en) | 2012-10-10 |
| CN102719193B true CN102719193B (en) | 2015-03-04 |
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| CN103694752A (en) * | 2013-11-29 | 2014-04-02 | 安徽祈艾特电子科技有限公司 | Organic-silicon heat-resistant paint |
| CN103881514A (en) * | 2014-02-25 | 2014-06-25 | 蚌埠凯盛工程技术有限公司 | Organosilicone heat-resistant paint |
| CN104373756A (en) * | 2014-10-29 | 2015-02-25 | 浙江创想节能科技有限公司 | Metallic reflection heat preservation cover and manufacturing method thereof |
| CN105860790B (en) * | 2016-06-17 | 2019-09-20 | 南京市产品质量监督检验院 | A kind of high-temperature resistant coating of improvement |
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| CN106752913A (en) * | 2016-12-14 | 2017-05-31 | 张学健 | A kind of high-temperature resistant coating |
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| CN107760196A (en) * | 2017-11-01 | 2018-03-06 | 安徽鼎隆重工科技有限公司 | A kind of preparation method of die casting machine high-temperature resistant coating |
| CN107841244A (en) * | 2017-11-01 | 2018-03-27 | 安徽鼎隆重工科技有限公司 | A kind of die casting machine special high-temperature resistant coating |
| CN107694888A (en) * | 2017-11-02 | 2018-02-16 | 安徽宝岛新能源发展有限公司 | Electric automobile metal plate lacquer spraying technique |
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| CN107674584A (en) * | 2017-11-02 | 2018-02-09 | 安徽宝岛新能源发展有限公司 | Plates of automobile high temperature resistant paint vehicle |
| CN107699129A (en) * | 2017-11-06 | 2018-02-16 | 陈兴 | A kind of Wear-resistant, high-temperature resistant coating of centrifugal high-temperature smoke discharging machine |
| CN108774462B (en) * | 2018-06-08 | 2020-08-07 | 湖南航天三丰科工有限公司 | Room-temperature-curing high-temperature-resistant anticorrosive coating and preparation method thereof |
| CN110194930B (en) * | 2019-03-15 | 2021-04-06 | 镇江新区恒盛物流有限公司 | High-temperature-resistant and high-cold-resistant coating and application thereof |
| CN111153608B (en) * | 2020-01-17 | 2022-11-08 | 南京航科高新材料研究院有限公司 | Organic-inorganic hybrid film-forming microcapsule type high-temperature self-repairing basalt fiber water-based impregnating compound and preparation method thereof |
| CN114145651B (en) * | 2020-09-07 | 2023-06-02 | 佛山市顺德区美的电热电器制造有限公司 | Slurry, cooking container, preparation method of cooking container and cooking equipment |
| CN113930157B (en) * | 2021-10-29 | 2022-05-06 | 上海宜瓷龙新材料股份有限公司 | Preservative-free water-based building coating and preparation method thereof |
| CN114836128A (en) * | 2022-05-16 | 2022-08-02 | 中国科学院长春应用化学研究所 | Temperature-indicating luminous coating and preparation method and application thereof |
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Address after: 512627 Guangdong city of Shaoguan province Wengyuan County Weng Town Huacai chemical coating city B-12-1 Patentee after: Guangdong Hao Sheng new material Co., Ltd. Address before: 511400 Guangzhou, Panyu District, east ring street, Panyu Avenue North, No. 537, Panyu energy saving science and Technology Park, Hill Venture Center, building No. 2, building No. 1, No. 501 Patentee before: Guangzhou Haozhisheng Chemical Co.,Ltd. |
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