CN102558924A - Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat - Google Patents
Preparation methods of high temperature resistant anticorrosion potassium silicate coating and corresponding coat Download PDFInfo
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- CN102558924A CN102558924A CN2010105806849A CN201010580684A CN102558924A CN 102558924 A CN102558924 A CN 102558924A CN 2010105806849 A CN2010105806849 A CN 2010105806849A CN 201010580684 A CN201010580684 A CN 201010580684A CN 102558924 A CN102558924 A CN 102558924A
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Abstract
The invention relates to preparation methods of a high temperature resistant anticorrosion potassium silicate coating and a corresponding coat. The high temperature resistant anticorrosion potassium silicate coating is formed by a solute and a solvent, wherein the solute comprises a component A liquid potassium silicate having a module of 3.0-4.0 and a weight accounting for 30-80% of the total weight of the coating, and a component B which comprises nanometer Cr powder having a weight accounting for 1-15% of the total weight of the coating, aluminum triphosphate having a weight accounting for 3-20% of the total weight of the coating, Zn powder having a weight accounting for 5-20% of the total weight of the coating and Al2O3 having a weight accounting for 10-50% of the total weight of the coating; and the solvent is water, and the weight ratio of the solvent to the solute is 1:3-10. The method for preparing the coat through utilizing the coating comprises the following steps: spraying or brushing the coating on the surface of a sandblasted steel iron part, drying the surface for 5-10min, carrying out temperature maintenance for 0.5-4h according to a furnace temperature of 200-260DEG C, taking out the part, and air-cooling the part to obtain the coat. The coat of the invention has the characteristics of high temperature resistance, anticorrosion and water resistance, and has the advantages of good thermal shock resistance, nontoxicity, no pollution, and environmental protection benefiting.
Description
Technical field
[0001] the present invention relates to science, a kind of fire resistant anticorrosive potassium silicate coating of ferrous materials, preparation method of corresponding coating of being mainly used in is provided especially.
Background technology
Common iron and steel such as carbon steel and cast iron are widely used in development of the national economy every field as the material of one type of economy, but its low erosion resistance and oxidation-resistance require to take corresponding safeguard procedures.Stainless steel has good anti-normal temperature corrosive nature, but when temperature was higher, its antioxidant property was relatively poor, and especially corrosion is even more serious in salt mist environment.Organic coating has long applicating history as the protective coating of metallic substance, but a shortcoming of organic coating is to contain organic solvent, and is very unfavorable to the protection environment.On the other hand, the weathering resistance of most organic coatings is poor, should not use as outdoor coating.Aspect high-temperaure coating, have only minority coating such as organosilicon coating can satisfy this requirement, but have the problem of organism discharging equally.With waterborne zinc-rich coating be the inorganic paint of representative have good temperature resistance can, but have that the microcosmic porous of coating causes that shielding properties is relatively poor, the coating premature failure, comparatively shortcoming such as harshness of crackle tendency, execution conditions arranged when coating is thicker.Though can improve its corrosion resistance nature through the modulus that improves silicate, easy gel when modulus is higher, coating is unstable.
Aspect high temperature protection; Inorganic coating is easier to peel off from body material when temperature fluctuation is big; That causes this problem is that at all coating is more crisp; When coating thermal expansivity and matrix metal differ greatly, will produce bigger thermal stresses, when stress concentration surpasses the intensity of coating, will make coating cracking or peel off, the stress that the key of solution is to increase the consistency of coating and matrix and makes coating produce in time obtains release.
Summary of the invention
This purpose provides the fire resistant anticorrosive potassium silicate coating that a kind of technique effect better is mainly used in ferrous materials, the preparation method of corresponding coating.
Fire resistant anticorrosive potassium silicate coating of the present invention; It is characterized in that: said coating is made up of solute and solvent two parts; Wherein the solute part is made up of component first and component second, and wherein the component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second is made up of the Zn powder of the nanometer Cr powder that accounts for coating total weight percent 0.5～15%, 3～20% aluminium triphosphate 5～20% and 10～50% aluminium sesquioxide; Solvent is a water, and the part by weight relation of solvent and solute is 1:3～10.
Ferrous materials according to the invention also requires protection number preference down with fire resistant anticorrosive potassium silicate coating:
Said coating satisfies following requirement: account for the liquid potassium silicate of gross weight 40～70%, 5～15% aluminium triphosphate, 3～10% nanometer Cr powder, 8～15% Zn powder, 20～40% aluminium sesquioxide.
Liquid potassium silicate modulus is 3.0～3.8, and nanometer Cr powder directly is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5.
The preparation method of said coating is: take by weighing nanometer Cr powder, aluminium triphosphate, Zn powder and aluminium sesquioxide in the component second in proportion, put into the rotating speed ball milling 1～2h of ball grinder with 250～350rpm after the pulverizing, make component second after the taking-up; Take by weighing the component second behind potassium silicate and the ball milling then in proportion; Component second joined in the potassium silicate and after making the two thorough mixing while stirring add zero(ppm) water; The ratio of zero(ppm) water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirred 5～20 minutes after 200 eye mesh screens promptly obtain coating after filtering.
The present invention also requires to protect the preparation method of fire resistant anticorrosive potassium silicate coating, it is characterized in that:
Said coating is made up of solute and solvent two parts, and wherein the solute part is made up of component first and component second, and wherein the component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second is made up of the Zn powder of the nanometer Cr powder that accounts for coating total weight percent 0.5～15%, 3～20% aluminium triphosphate 5～20% and 10～50% aluminium sesquioxide; Solvent is a water, and the part by weight relation of solvent and solute is 1:3～10;
The preparation method of said coating is: take by weighing nanometer Cr powder, aluminium triphosphate and aluminium sesquioxide in the component second in proportion, put into the rotating speed ball milling 1～2h of ball grinder with 250～350rpm after the pulverizing, make component second after the taking-up; Take by weighing the component second behind potassium silicate and the ball milling then in proportion; Component second joined in the potassium silicate and after making the two thorough mixing while stirring add zero(ppm) water; The ratio of zero(ppm) water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirred 5～20 minutes after 200 eye mesh screens promptly obtain coating after filtering.
The requirement that is prepared said coating by coating is: adopt spraying or the mode of brushing with paint spay-coating or brush through the ferrous materials of sandblasting and use component surface, be to be incubated 0.5～4h under 200～260 ℃ of conditions in furnace temperature behind surface drying 5～10min; Promptly obtain said coating after taking out air cooling.
The coating that said coating prepn is used preferably also satisfies following requirement: liquid potassium silicate account for gross weight 40～70%, aluminium triphosphate 5～15%, nanometer Cr powder 3～10%, Zn powder 8～15%, aluminium sesquioxide 10～40%;
Liquid potassium silicate modulus is 3.0～3.8, and nanometer Cr powder directly is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5.
The requirement that is prepared said coating by coating is: adopt spraying or the mode of brushing with paint spay-coating or brush ferrous materials component surface through sandblasting, be to be incubated 0.5～4h under 200～260 ℃ of conditions in furnace temperature behind surface drying 5～10min; Promptly obtain said coating after taking out air cooling.
Prepare in the employed formulation for coating material of said coating the weight percent content of each composition require be: liquid potassium silicate 30～80%, nanometer Cr powder 0.5～15%, aluminium triphosphate 3～20%, Zn powder 5～20% and aluminium sesquioxide 10～50%.
The ferrous materials that is mainly used in of the present invention is with the environment-protecting nanometer modified potassium silicate coating of fire resistant anticorrosive, and it has high temperature resistant, protection against corrosion, water-proof characteristics simultaneously, has good thermal shock resistance, and coating is nontoxic, pollution-free, helps environmental protection.
High temperature resistant, the erosion shield of ferrous materials that is used for involved in the present invention, coating does not contain organic solvent, and is nontoxic, pollution-free.Use nanometer Cr powder to improve the antioxidant property and the corrosion resistance nature of coating among the present invention; The adding of nanometer Cr powder has effectively improved the antioxidant property and the thermal shock performance of coating; Because the nano-powder particle is less; Thermal stresses at the process of cooling floating coat has obtained effective dispersion, avoids bigger stress concentration occurring, thereby has improved the performance of the antistripping of coating.Aluminium triphosphate is a kind of good rust-stabilising pigment, can form complicated compound with metals ion, and metal is had passivation, can improve corrosion resistance of coating.The Zn powder has promoted the curing of potassium silicate on the one hand, has strengthened corrosion resistance of coating on the other hand, and the adding of aluminium sesquioxide has improved the thermotolerance of coating, has also given coating good abrasion resistance and hardness simultaneously.Be heating and curing and improved the water resistance of coating.Application of paints involved in the present invention reaches 1500h in the steel material surface resisting salt fog corrosion; Resistance to elevated temperatures improves more than 5 times than carbon steel material in the time of 500 ℃; Be coated with and be contained in behind the stainless steel surface that anti-95 ℃ of hot salt brines reach 2000h and coating is not destroyed, matrix does not corrode, heat-resisting shake is not peeled off more than 100 times or is ftractureed.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation:
Fig. 1 is Fig. 1 coating microtexture exterior view;
Fig. 2 coating microtexture sectional view;
Fig. 3 is carbon steel/coating salt air corrosion 1500h macro morphology;
Fig. 4 is a carbon steel at 500 ℃ oxidation kinetics curve.
Embodiment
Embodiment 1
Taking by weighing nanometer Cr powder, 100 g aluminium triphosphates, the 650 g particle diameters that 100 g particle diameters are 50nm is the aluminium sesquioxide of 2 μ m, and the 50g particle diameter is that 20 microns Zn powder is put into rotating speed ball milling component two 1hs of ball grinder with 300rpm.Take by weighing the 550g modulus and be 3.0 potassium silicate; 450g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 200g zero(ppm) water, in stirrer, stirred 5 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2300rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 6min and be 210 ℃ is incubated 1.5h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 2
Take by weighing the Cr powder that 100 g particle diameters are 100nm, 30g aluminium triphosphate, 140g particle diameter are the aluminium sesquioxide of 50 μ m, and the 80g particle diameter is that 30 microns Zn powder is put into rotating speed ball milling component two 1.2hs of ball grinder with 350rpm.Take by weighing the 520g modulus and be 3.5 potassium silicate; 280g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 100g zero(ppm) water, in stirrer, stirred 15 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2400rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 8min and be 200 ℃ is incubated 0.5h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 3
Taking by weighing particle diameter is the Cr powder of 30nm for the 192g particle diameter, and 18g aluminium triphosphate, 688g particle diameter are the aluminium sesquioxide of 45 μ m, and the 200g particle diameter is that 30 microns Zn powder is put into rotating speed ball milling component two 1.5hs of ball grinder with 330rpm.Take by weighing modulus and be 3.5 potassium silicate 800g; 1200g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 500g zero(ppm) water, in stirrer, stirred 10 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2450rpm.The mode that adopts spraying or brush is with paint spay-coating or brushing or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 10min and be 235 ℃ is incubated 1.2h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 4
Taking by weighing particle diameter is Cr powder 264 g of 10nm, and aluminium triphosphate 528 g, particle diameter are 25 μ m aluminium sesquioxides, 1268 g, and the 800g particle diameter is that 50 microns Zn powder is put into rotating speed ball milling component two 2hs of ball grinder with 310rpm.Take by weighing modulus and be 3.8 potassium silicate 1400g; Component two 2788g; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 1000g zero(ppm) water, in stirrer, stirred 15 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2550rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 10min and be 215 ℃ is incubated 2h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 5
Taking by weighing the 275g particle diameter is the Cr powder of 15nm, and 825g aluminium triphosphate, 2500g particle diameter are 10 μ m aluminium sesquioxides, and the 250g particle diameter is that 40 microns Zn powder is put into rotating speed ball milling component two 1.5hs of ball grinder with 300rpm.Take by weighing the 1500g modulus and be 3.1 potassium silicate; 3500g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 550g zero(ppm) water, in stirrer, stirred 10 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2600rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 10min and be 230 ℃ is incubated 0.5h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 6
Taking by weighing the 385g particle diameter is the Cr powder of 63nm, and 1075g aluminium triphosphate, 340g particle diameter are the aluminium sesquioxide of 40 μ m, and the 450g particle diameter is that 20 microns Zn powder is put into rotating speed ball milling component two 2hs of ball grinder with 300rpm.Take by weighing the 3000g modulus and be 3.4 potassium silicate; 2000g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 1000g zero(ppm) water, in stirrer, stirred 12 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2500rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 5min and be 250 ℃ is incubated 0.5h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 7
Taking by weighing the 66g particle diameter is the Cr powder of 85nm, and 890g aluminium triphosphate, 1414g particle diameter are 20 μ m aluminium sesquioxides, and the 600g particle diameter is that 10 microns Zn powder is put into rotating speed ball milling component two 1hs of ball grinder with 350rpm.Take by weighing the 3300g modulus and be 3.2 potassium silicate; 2700g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 1500g zero(ppm) water, in stirrer, stirred 8 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2100rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 8min and be 240 ℃ is incubated 3h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 8
Taking by weighing the 990g particle diameter is the Cr powder of 35nm, and 162g aluminium triphosphate, 588g particle diameter are the aluminium sesquioxide of 10 μ m, and the 500g particle diameter is that 35 microns Zn powder 480g particle diameter is that 50 microns Zn powder is put into rotating speed ball milling component two 1.8hs of ball grinder with 330rpm.Take by weighing the 3600g modulus and be 3.7 potassium silicate; 2400g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 2000g zero(ppm) water, in stirrer, stirred 10 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2000rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 8min and be 260 ℃ is incubated 4h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment 9
Taking by weighing the 140g particle diameter is the Cr powder of 45nm, and 220g aluminium triphosphate, 120g particle diameter are the aluminium sesquioxide of 8 μ m, and the 500g particle diameter is that 30 microns Zn powder is put into the rotating speed ball milling component two 1.6 of ball grinder with 310rpm.Take by weighing the 3200g modulus and be 4.0 potassium silicate; 800g component two; Add while stirring and make component two powders and potassium silicate thorough mixing in the potassium silicate, add 400g zero(ppm) water, in stirrer, stirred 12 minutes after 200 eye mesh screens filter the back and obtain coating with the rotating speed of 2300rpm.The mode that adopts spraying or brush is with paint spay-coating or brush carbon steel, cast iron or the stainless steel component surface through sandblasting, and the resistance furnace of putting into furnace temperature behind the surface drying 8min and be 245 ℃ is incubated 0.5h.Promptly obtain high temperature resistant, erosion shield after taking out air cooling.
Embodiment result shows that the fire resistant anticorrosive coating technology that obtains through this technology has good corrosion-resistant and resistance to elevated temperatures, is easy to control, is fit to suitability for industrialized production, has nontoxic, free of contamination characteristic, helps environment protection.
Claims (6)
1. fire resistant anticorrosive potassium silicate coating; It is characterized in that: said coating is made up of solute and solvent two parts; Wherein the solute part is made up of component first and component second, and wherein the component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second is made up of the nanometer Cr powder that accounts for coating total weight percent 0.5～15%, 3～20% aluminium triphosphate, 5～20% Zn powder and 10～50% aluminium sesquioxide; Solvent is a water, and the part by weight relation of solvent and solute is 1:3～10.
2. according to the said fire resistant anticorrosive potassium silicate of claim 1 coating, it is characterized in that:
Said coating satisfies following requirement: account for the liquid potassium silicate of gross weight 30～80%, 3～20% aluminium triphosphate, 5～20% Zn powder, 0.5～15% nanometer Cr powder, 10～50% aluminium sesquioxide;
Liquid potassium silicate modulus is 3.0～4.0, and the particle diameter of nanometer Cr powder is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5;
The preparation method of said coating is: take by weighing nanometer Cr powder, aluminium triphosphate, Zn powder and aluminium sesquioxide in the component second in proportion, put into the rotating speed ball milling 1～2h of ball grinder with 250～350rpm after the pulverizing, make component second after the taking-up; Take by weighing the component second behind potassium silicate and the ball milling then in proportion; Component second joined in the potassium silicate and after making the two thorough mixing while stirring add zero(ppm) water; The ratio of zero(ppm) water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirred 5～20 minutes after 200 eye mesh screens promptly obtain coating after filtering.
3. the preparation method of fire resistant anticorrosive potassium silicate coating is characterized in that:
Said coating is made up of solute and solvent two parts, and wherein the solute part is made up of component first and component second, and wherein the component first is that modulus is 3.0～4.0 liquid potassium silicate, accounts for 30～80% of coating total weight percent; Component second is made up of the nanometer Cr powder that accounts for coating total weight percent 0.5～15%, 3～20% aluminium triphosphate, 5～20% Zn powder and 10～50% aluminium sesquioxide; Solvent is a water, and the part by weight relation of solvent and solute is 1:3～10;
The preparation method of said coating is: take by weighing nanometer Cr powder, aluminium triphosphate and aluminium sesquioxide in the component second in proportion, put into the rotating speed ball milling 1～2h of ball grinder with 250～350rpm after the pulverizing, make component second after the taking-up; Take by weighing the component second behind potassium silicate and the ball milling then in proportion; Component second joined in the potassium silicate and after making the two thorough mixing while stirring add zero(ppm) water; The ratio of zero(ppm) water and coating is 1:3～10, and the rotating speed with 2000～2600rpm in stirrer stirred 5～20 minutes after 200 eye mesh screens promptly obtain coating after filtering;
The requirement that is prepared said coating by coating is: adopt spraying or the mode of brushing with paint spay-coating or brush through the ferrous materials of sandblasting and use component surface, be to be incubated 0.5～4h under 200～260 ℃ of conditions in furnace temperature behind surface drying 5～10min; Promptly obtain said coating after taking out air cooling.
4. according to the preparation method of the said fire resistant anticorrosive potassium silicate of claim 3 coating, it is characterized in that: the coating that said coating prepn is used satisfies following requirement: liquid potassium silicate account for gross weight 30～80%, aluminium triphosphate 3～20%, nanometer Cr powder 0.5～15%, Zn powder 5～20%, aluminium sesquioxide 10～50%;
Liquid potassium silicate modulus is 3.0～4.0, and nanometer Cr powder directly is 10～100nm, and the particle diameter of aluminium sesquioxide is 1～50 μ m, and the particle diameter of Zn powder is 10～50 microns; The pH value of tripolyphosphate aluminum water solution (10%) is 5.0～7.5.
5. according to the preparation method of the said fire resistant anticorrosive potassium silicate of claim 4 coating; It is characterized in that: the requirement that is prepared said coating by coating is: adopt spraying or the mode of brushing with paint spay-coating or brush ferrous materials component surface through sandblasting, be to be incubated 0.5～4h under 200～260 ℃ of conditions in furnace temperature behind surface drying 5～10min; Promptly obtain said coating after taking out air cooling.
6. according to the preparation method of one of them said fire resistant anticorrosive potassium silicate coating of claim 3～5, it is characterized in that: prepare in the employed formulation for coating material of said coating the weight percent content of each composition require be: liquid potassium silicate 30～80%, aluminium triphosphate 3～20%, Zn powder 5～20% and aluminium sesquioxide 5～50%.
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| CN102982747A (en) * | 2012-12-11 | 2013-03-20 | 湖北春永明亮科技有限公司 | Method for preparing fireproof long persistence fire control sign |
| CN104263022A (en) * | 2014-10-23 | 2015-01-07 | 国网辽宁省电力有限公司营口供电公司 | Potassium silicate paint added with hydroxyl silsesquioxane and preparation method thereof |
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| CN106733516A (en) * | 2016-12-30 | 2017-05-31 | 中国兵器科学研究院宁波分院 | A kind of preparation method of high-temperature resistant anti-corrosive erosion resisting coating |
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| CN102982747B (en) * | 2012-12-11 | 2015-08-12 | 湖北春永明亮科技有限公司 | Prepare the method for fireproof long persistence fire control sign |
| CN104263022A (en) * | 2014-10-23 | 2015-01-07 | 国网辽宁省电力有限公司营口供电公司 | Potassium silicate paint added with hydroxyl silsesquioxane and preparation method thereof |
| CN104650634A (en) * | 2015-03-11 | 2015-05-27 | 国网辽宁省电力有限公司营口供电公司 | Wear-resistant sodium silicate coating for electric field environment and preparation method of coating |
| CN105860618A (en) * | 2016-05-26 | 2016-08-17 | 北京化工大学 | Electrical double layer anti-corrosion coating and application thereof |
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