CN103525296A - High-temperature-resistant plating-resisting coating and preparation method thereof - Google Patents
High-temperature-resistant plating-resisting coating and preparation method thereof Download PDFInfo
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- CN103525296A CN103525296A CN201310455235.5A CN201310455235A CN103525296A CN 103525296 A CN103525296 A CN 103525296A CN 201310455235 A CN201310455235 A CN 201310455235A CN 103525296 A CN103525296 A CN 103525296A
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Abstract
The invention discloses a high-temperature-resistant plating-resisting coating and a preparation method thereof. The plating-resisting coating comprises the raw materials in parts by weight as follows: 40-80 parts of high-temperature-resistant silicone resin, 5-10 parts of acrylic resin, 10-35 parts of mica powder, 10-15 parts of copper chromite black and 10-20 parts of silicon dioxide. The method comprises the steps as follows: the high-temperature-resistant silicone resin, the mica powder and the copper chromite black are uniformly mixed and dispersed under the condition of 200-1500 r/min, so that a mixture is obtained; the silicon dioxide is added to the mixture, and the mixture is fully dispersed for 2-5 h; and sedimentation is performed for about 1-3 h, so that the high-temperature-resistant plating-resisting coating is obtained. According to the high-temperature-resistant plating-resisting coating, the technical requirement indexes that a plating layer is perfectly protected and is not corroded by a high-temperature plating solution and the like in an environment of 300-1000 DEG C are met; and the adhesive force of the product is high, tedious processes such as primer coating and the like are not required, the paint coating process is simple, and the cost is greatly saved.
Description
Technical field
The present invention relates to a kind of resistance plating coating, refer to particularly a kind of resistant to elevated temperatures resistance plating coating, the invention still further relates to the preparation method of this resistant to elevated temperatures resistance plating coating.
Background technology
In steel plate processing technology, finished steel plate need to carry out hot dip on crude steel surface, to improve the performance such as corrosion-resistant, wear-resistant, resistance to oxidation of steel.
Yet, at some accurate electric appliance metal steel surfaces, large-size chemical, mechanical means and variously cannot toast dry high temperature service surface while carrying out hot dip, often need in designated area, carry out hot dip, outside designated area, not need hot dip, or can not be by hot dip.And how guaranteeing that steel surface outside Du district is not by hot dip and not by hot dip corrosion, traditional way is the non-conductive resinoid of full-filling, mechanical removal again after hot dip is good.Yet the method for traditional full-filling resin parcel not only has the drawbacks such as technique is loaded down with trivial details, full-filling region is inaccurate, and at high temperature can melt, decompose, and pollutes coating, even damages steel.
If use traditional resistance depositing process, use merely ordinary resin as protective medium, not only there are the drawbacks such as technique is loaded down with trivial details, full-filling region is inaccurate, and at high temperature can melt, decompose, pollute coating, even damage steel.
Summary of the invention
The first object of the present invention is to overcome the weak point of above-mentioned existing background technology, and a kind of resistant to elevated temperatures resistance plating coating is provided.
The second object of the present invention is to provide a kind of method of preparing above-mentioned resistant to elevated temperatures resistance plating coating, and the present invention hinders plating coating and has heat-and corrosion-resistant, the good feature of resistance plating performance.
For solving the problems of the technologies described above, a kind of resistant to elevated temperatures resistance plating coating provided by the invention, the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 40～80 parts, the acrylic resin of 5～10 parts, the mica powder of 10～35 parts, the copper-chrome black of 10～15 parts and the silicon-dioxide of 10～20 parts.
Further, the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 55～75 parts, the acrylic resin of 5～10 parts, the mica powder of 20～35 parts, the copper-chrome black of 10～15 parts and the silicon-dioxide of 10～20 parts.
Again further, the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 68 parts, the acrylic resin of 8 parts, the mica powder of 22 parts, the copper-chrome black of 12 parts and the silicon-dioxide of 15 parts.
Again further, described mica powder is white mica powder, and its particle diameter is 150～300 orders, and density is 2.80g/cm
3, whiteness 70～80,1000 ℃ of heatproofs, loss on ignition 2.8～2.9, moisture < 1%.
Again further, described silicon-dioxide particle diameter is 200～600 orders.
The present invention also provides a kind of described resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) by above-mentioned weight part ratio, take high-temperature-resistant silicon resin, acrylic resin, mica powder, copper-chrome black and silicon-dioxide, standby;
2) by high-temperature-resistant silicon resin, mica powder and copper-chrome black under 1200～1500r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 2～5h; Deposit again approximately 1～3h, obtain resistant to elevated temperatures resistance plating coating.
High-temperature-resistant silicon resin is a kind of comparatively complicated multipolymer, and this resin is the polymethyl siloxane branched chain type prepolymer being formed through hydrolysis copolymerization, polycondensation by chlorosilane monomer, then through the high molecular polymer of polymerization forming.Faint yellow or the sorrel uniform liquid of this high temperature silicon resin, has allowed opalescence, machinery-free impurity, and wherein the solids content of high-temperature-resistant silicon resin is not less than 50% 150 ℃ time.
Above-mentioned copper-chrome black is a kind of black metal oxide mixed phase mineral dye, is a kind of more conventional black pigment, is the high-performance inorganic pigment with environment-protecting asepsis being generated through high temperature solid state reaction by Multimetal oxide.
Beneficial effect of the present invention is:
1, high temperature resistant resistance plating material of the present invention; not only realized in 300 ℃ to 1000 ℃ environment perfect protective coating, not by technical requirements indexs such as high temperature bath corrosions, and this product strong adhesion, not the need loaded down with trivial details technique such as prime; it is simple that paint is coated with technique, greatly saved cost.
2, have can be from dry feature under normal temperature for high temperature resistant resistance plating material of the present invention, if use drying technology to process coating simultaneously, paint film property is better.
3, high temperature resistant resistance plating material of the present invention is substantially nontoxic, and non-volatility is organic, and products material transformation efficiency is high, little to environment and operator's contaminative.
4, the use range of high temperature resistant resistance plating material of the present invention: high temperature resistance plating coating is applicable to heat zinc coating plate one side zinc coating, high temperature resistant protection is done on the surface of the large high-temperature equipment that boiler, blast furnace, baking oven, vapor pipe, high-temperature pipe outer wall, metallurgy, chemical industry, power plant, glass work etc. cannot toast.
Accompanying drawing explanation
Fig. 1 is that sheet material that atomic force microscope (AFM) is smeared embodiment 1～4 carries out the surface atom graphic making schematic diagram of arranging;
In figure, A is that embodiment 1, B are that embodiment 2, C are that embodiment 3, D are that embodiment 4, E are that comparative example 1, F are for blank.
Embodiment
In order to explain better the present invention, below in conjunction with specific embodiment, further illustrate main contents of the present invention, but content of the present invention is not only confined to following examples.
Embodiment 1
A resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) take the high-temperature-resistant silicon resin of 68g, the white mica powder of the acrylic resin of 8g, 22g, the silicon-dioxide of the copper-chrome black of 12g and 15g is standby;
2) by high-temperature-resistant silicon resin, white mica powder and copper-chrome black under 1400r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 3h; Deposit again about 1h, obtain resistant to elevated temperatures resistance plating coating.
Embodiment 2
A resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) take the high-temperature-resistant silicon resin of 75g, the white mica powder of the acrylic resin of 6g, 20g, the silicon-dioxide of the copper-chrome black of 13g and 17g is standby;
2) by high-temperature-resistant silicon resin, white mica powder and copper-chrome black under 1200r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 5h; Deposit again about 1h, obtain resistant to elevated temperatures resistance plating coating.
Embodiment 3
A resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) take the high-temperature-resistant silicon resin of 55g, the white mica powder of the acrylic resin of 8g, 35g, the silicon-dioxide of the copper-chrome black of 12g and 18g is standby;
2) by high-temperature-resistant silicon resin, white mica powder and copper-chrome black under 1500r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 2h; Deposit again about 3h, obtain resistant to elevated temperatures resistance plating coating.
Embodiment 4
A resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) by above-mentioned weight part ratio, take the high-temperature-resistant silicon resin of 80g, the white mica powder of the acrylic resin of 5g, 10g, the silicon-dioxide of the copper-chrome black of 10g and 10g is standby;
2) by high-temperature-resistant silicon resin, white mica powder and copper-chrome black under 1400r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 3h; Deposit again about 2h, obtain resistant to elevated temperatures resistance plating coating.
Embodiment 5
A resistant to elevated temperatures resistance plating preparation method for coating, comprises the following steps:
1) by above-mentioned weight part ratio, take the high-temperature-resistant silicon resin of 40g, the white mica powder of the acrylic resin of 10g, 10g, the silicon-dioxide of the copper-chrome black of 15g and 20g is standby;
2) by high-temperature-resistant silicon resin, white mica powder and copper-chrome black under 1400r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 3h; Deposit again about 1h, obtain resistant to elevated temperatures resistance plating coating.
Raw material used in above-described embodiment is all purchased from market, white mica powder, and its particle diameter is 150～300 orders, density is 2.80g/cm
3, whiteness 70～80,1000 ℃ of heatproofs, loss on ignition 2.8～2.9, moisture < 1%.Silicon-dioxide particle diameter is 200～600 orders.
Resistant to elevated temperatures resistance plating coating can adopt conventional coating method to apply, for example roller coat, spraying and brushing.After to be plated getting well, strike off.
The resistance plating coating preparing is coated in to steel disc to be plated surface, and in the reserved certain region to be plated of steel disc region intermediate, to observe the resistance plating situation of area peripheral edge to be plated.Record, sees the following form 1
Comparative example 1:
Use traditional resistance plating material (epoxy resin is main material) to paint painting, then carry out hot dip, observe coating periphery resistance plating situation and be labeled as comparative example 1.Record, sees the following form 1.
According to the method in embodiment 1, embodiment 2 title complexs are coated on test steel disc, record equally result, typing table 1.
Set a blank group experiment (not zinc-plated), be recorded as blank 1.
In table 1, data are all picked up from the polarization curve parameters obtained that electrochemical method (three-electrode system) is measured.What this test was used is that saturated calomel electrode is done reference electrode, and saturated KCl solution is as corrosion electrolytic solution.
By the alternating-current impedance (inverse) of measure sample, go to evaluate the chemical property of coating and non-coating, to detect the quality of coating.
Table 1:
(note: it is No. 20 steel that steel disc is selected in this test, the outer metal of coating is No. 20 steel of carbon containing 0.2%.）
By upper table, we can find, use the steel plate of embodiment 1 and embodiment 2 to keep stablizing good coating performance in plating Zn region, at coating, are not substantially subject to chemical corrosion outward.
And use common resistance to plate the comparative example 1 of material, not only at cladding region, be likely subject to the interference of resistance plating material, and also hot zinc liquid cannot be completely cut off outside steel disc in resistance plating region, make on the contrary zinc contact with iron and be exposed to surface simultaneously, form galvanic cell, under the stimulation of chemical electricimpulse, corrode more violent.
The sheet material that utilizes atomic force microscope (AFM) to smear embodiment 1～4 carries out the surface atom graphic making of arranging:
As shown in A-F in Fig. 1: test gained figure by AFM and be not difficult to find out, former substrate surface is smooth smooth (if figure F is blank.Through high temperature resistance plating coating, process the substrate surface after hot dip, all only have a small amount of molecular grouping projection, surface can keep coating planarization substantially, and there is obvious protuberance fold on comparative example 1 surface.Illustrate that this product is more superior than tradition resistance plating material property.
Claims (7)
1. a resistant to elevated temperatures resistance plating coating, is characterized in that: the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 40～80 parts, the acrylic resin of 5～10 parts, the mica powder of 10～35 parts, the copper-chrome black of 10～15 parts and the silicon-dioxide of 10～20 parts.
2. coating is plated in resistant to elevated temperatures resistance according to claim 1, it is characterized in that: the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 55～75 parts, the acrylic resin of 5～10 parts, the mica powder of 20～35 parts, the copper-chrome black of 10～15 parts and the silicon-dioxide of 10～20 parts.
3. coating is plated in resistant to elevated temperatures resistance according to claim 2, it is characterized in that: the raw material of this resistance plating coating comprises by weight: the high-temperature-resistant silicon resin of 68 parts, the acrylic resin of 8 parts, the mica powder of 22 parts, the copper-chrome black of 12 parts and the silicon-dioxide of 15 parts.
4. coating is plated in resistant to elevated temperatures resistance according to claim 1, it is characterized in that: described mica powder is white mica powder, and its particle diameter is 150～300 orders, and density is 2.80g/cm
3, whiteness is 70～80.
5. according to resistant to elevated temperatures resistance plating coating described in claim 1 or 4, it is characterized in that: described silicon-dioxide particle diameter is 200～600 orders.
6. coating is plated in resistant to elevated temperatures resistance according to claim 1, it is characterized in that: described high-temperature-resistant silicon resin solids content under 150 ℃ of conditions is not less than 50%.
7. the method for preparing resistant to elevated temperatures resistance plating coating described in claim 1, is characterized in that: comprise the following steps:
1) by above-mentioned weight part ratio, take high-temperature-resistant silicon resin, acrylic resin, mica powder, copper-chrome black and silicon-dioxide, standby;
2) by high-temperature-resistant silicon resin, mica powder and copper-chrome black under 1200～1500r/min condition, evenly blending dispersion, obtains mixture;
3) then silicon-dioxide is added in mixture, fully disperse 2～5h; Deposit again approximately 1～3h, obtain resistant to elevated temperatures resistance plating coating.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106280976A (en) * | 2016-08-31 | 2017-01-04 | 株洲中航动科南方燃气轮机成套制造安装有限公司 | Thermal spraying frock clamp protective coating, means of defence and application |
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| CN101747832A (en) * | 2008-12-12 | 2010-06-23 | 上海大通高科技材料有限责任公司 | Anticorrosive allochroic paint used for high-temperature steel structure and preparation method thereof |
| CN101747833A (en) * | 2008-12-12 | 2010-06-23 | 上海大通高科技材料有限责任公司 | Super high-temperature resistant coating and preparation method thereof |
| CN101864231A (en) * | 2010-06-12 | 2010-10-20 | 陕西德立特种漆业有限责任公司 | Dedicated protective coating for laser shock hardened stainless steel and preparation and using methods thereof |
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| CN101747832A (en) * | 2008-12-12 | 2010-06-23 | 上海大通高科技材料有限责任公司 | Anticorrosive allochroic paint used for high-temperature steel structure and preparation method thereof |
| CN101747833A (en) * | 2008-12-12 | 2010-06-23 | 上海大通高科技材料有限责任公司 | Super high-temperature resistant coating and preparation method thereof |
| CN101864231A (en) * | 2010-06-12 | 2010-10-20 | 陕西德立特种漆业有限责任公司 | Dedicated protective coating for laser shock hardened stainless steel and preparation and using methods thereof |
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| CN106280976A (en) * | 2016-08-31 | 2017-01-04 | 株洲中航动科南方燃气轮机成套制造安装有限公司 | Thermal spraying frock clamp protective coating, means of defence and application |
| CN106280976B (en) * | 2016-08-31 | 2019-07-02 | 株洲中航动科南方燃气轮机成套制造安装有限公司 | Thermal spraying frock clamp protective coating, means of defence and application |
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