CN101705480A - Chemical modification technology of chemical nickel phosphorus plating alloy coating - Google Patents
Chemical modification technology of chemical nickel phosphorus plating alloy coating Download PDFInfo
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- CN101705480A CN101705480A CN200910075887A CN200910075887A CN101705480A CN 101705480 A CN101705480 A CN 101705480A CN 200910075887 A CN200910075887 A CN 200910075887A CN 200910075887 A CN200910075887 A CN 200910075887A CN 101705480 A CN101705480 A CN 101705480A
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Abstract
The invention provides a process for preparing a sodium styrene sulfonate and acrylic acid modified nickel phosphorus plating alloy coating by respectively using a gamma-ray irradiation/chemical grafting technology. A polytetrafluoroethylene emulsion solution, a fluorocarbon cationic surfactant, sodium styrene sulfonate, acrylic acid and the like are used as raw materials, sodium styrene sulfonate and acrylic copolymers are uniformly grafted in a nickel phosphorus plating alloy coating through the gamma-ray irradiation/chemical grafting technology so as to enable the surface of the coating to be loaded with sulfonic acid groups and carboxylic acid groups which have cation selection penetration property, therbey effectively inhibiting and slowing the migration and the penetration of invasive chloride ions to the inner part of the coating, and improving the property of the conventional nickel phosphorus plating alloy coating resisting point corrosion, gap corrosion and intergranular corrosion caused by the invasive chloride ions. The sodium styrene sulfonate and acrylic acid modified nickel phosphorus plating alloy coating improves the corrosion property of the nickel phosphorus alloy coating in a sodium chloride medium, and expands the application to the fields of petrochemical complex, pump manufacture industry and the like.
Description
Technical field
The present invention relates to the corrosion resisting property improvement of chemical nickeling phosphorus alloy film, particularly relating to reagent such as a kind of employing ptfe emulsion, fluorine carbon type cats product, Sodium styrene sulfonate and vinylformic acid is raw material, use gamma-ray irradiation/Chemical Grafting Technique, the preparation technology who nickel-phosphorus alloy coating is carried out modification.
Background technology
Corrosion of Metallic Materials such as iron and steel spread all over each Application Areas of national economy, all can bring enormous economic loss every year, the investigation of developed country shows, the annual financial loss that causes because of metallic material corrosion accounts for 2%～4% of gross national product, and the financial loss that China every year causes because of corrosion is also above 20,000,000,000 yuan.Fully carrying out Corrosion of Metallic Materials and protected working, is the important behave that ensures a series of key subjects such as utilization of resources, environment protection, normal production and new technology research and development.Thereby, actively research and develop anti-corrosion novel material and anticorrosion new technology, reducing and corroding the financial loss that causes is the key subjects that current urgent need solves.
Be the loss that effective mitigate corrosion is caused, the main at present corrosion resisting property that adopts surface coating technique to improve metallic substance promptly stops water, air and corrosive medium to contact its corrosion resisting property of raising with metallic substance with coating.Many scholars adopt technology such as plating, electroless plating, compound plating, vapour deposition, electrophoretic painting with metals such as Ni, Cr, Zn, alloy layers such as Ni-P, TiN, SiO
2, TiO
2Deng sull, and organic polymer plating such as Resins, epoxy forms protective layer in the metallic surface.Wherein, the research of chemical nickel phosphorus plating (Ni-P) alloy layer is comparatively extensive, Ni-P coating hole is few, thickness is even, hardness is high, with the good bonding strength of matrix, have higher erosion resistance.
Chemical nickeling phosphorus alloy film belongs to galvanic protection coating concerning most of iron alloys and aluminum alloy materials, but will guarantee that nickel-phosphorus coating has excellent corrosion resistant performance, must make it form complete blocking layer on the metallic surface.The corrosion of nickel-phosphorus coating mainly contains two kinds of forms, and a kind of is uniform corrosion, and another kind is that spot corrosion takes place at coating hole place, if nickel-phosphorus coating exists hole or defective will have a strong impact on the protection effect of coating.Be used for etch-proof Application Areas from nickel-phosphorus alloy coating, its protection against corrosion emphasis is the local corrosion of sodium chloride medium.Chlorion is the aggressiveness ion; permeate to metallic matrix by the surface of nickel-phosphorus coating easily; when it contacts with protected metallic substance, cause spot corrosion, crevice corrosion and the intergranular corrosion of metallic substance usually, thereby cause the antiseptic property forfeiture of nickel-phosphorus alloy coating.
Thereby be matrix with the Ni-P protective coating, it is carried out modification, it is significant to research and develop the modification nickel-phosphorus coating novel, that corrosion resisting property is good.In this respect, Chinese scholars has been carried out a series of researchs in succession, as with nickel-phosphorus coating at 1%CrO
3Solution impregnation 15min carries out Passivation Treatment, and its salt fog resistance experiment effect improves about 1 times; After first flash copper on the steel substrate, plate the Ni-P alloy again and can improve solidity to corrosion, can also improve electroconductibility and shock-resistance simultaneously; Adopt dual nickel-phosphorus coating, promptly on high phosphor alloy coating, plate low phosphor alloy coating again,, can play the effect of sacrificial anode because the current potential higher phosphorous of low-phosphorous coating is more negative; Add alloying elements such as Cu, Zn, Sn, Mo, W, Cr and Re, obtain the polynary coating of nickel phosphorus to improve its corrosion resisting property; Adopt chemical nickel phosphorus plating and various inert particulate codeposition, can obtain the brand-new composite deposite of function, effectively improved solidity to corrosion, wear resistance and the lubricity of nickel-phosphorus alloy coating, as Ni-P-Al
2O
3, Ni-P-SiC, Ni-P-Cr
2O
3, composite deposite such as Ni-P-PTFE, Ni-P-graphite.But above measure does not fundamentally improve the performance of nickel-phosphorus coating anti-chlorine ion corrosion.
All things considered, Most scholars is still implemented the nickel-phosphorus coating sealing of hole and is handled or adopt nickel phosphorus multi-elements alloying coating and nickel-phosphorus composite deposit at present, suppress in the corrosive medium aggressiveness chlorion to the destruction of metallic substance by the mechanical barrier effect, fundamentally do not eliminate the harm of chlorion, finally limited the application of nickel-phosphorus coating and composite deposite thereof in each field to metallic substance.
Summary of the invention
In order to overcome the deficiencies in the prior art; effectively improve the performance of nickel-phosphorus alloy coating anti-chlorine ion corrosion; the invention provides a kind of preparation technology of grafting modification of nickel-phosphorus alloy coating; by gamma-ray irradiation/Chemical Grafting Technique; evenly apply Sodium styrene sulfonate and acrylate copolymer respectively on the nickel-phosphorus alloy coating surface; make the even grafting in nickel-phosphorus alloy coating surface have diactinic sulfonic acid group of cation selective and carboxylic-acid functional group; effectively suppress and slow down in the corrosive medium aggressiveness chlorion by nickel-phosphorus alloy coating to protected metal material surface migration infiltration; effectively avoid the metallic material local corrosive to take place, improved the corrosion resisting property of nickel-phosphorus alloy coating.
The preparation technology of chemical nickeling phosphorus alloy film modification is:
1) preparation of chemical nickeling phosphorus alloy film:
Adopt Ni-P to prepare the nickel-phosphorus alloy coating of surface doping tetrafluoroethylene particulate, consisting of of chemical plating fluid: single nickel salt 20～30g/L, sodium hypophosphite 20～35g/L, lactic acid 15～25g/L, sodium acetate 4～8g/L, Sodium Fluoride 2～4g/L, (model is fluorine carbon type cats product: FC-4) 0.2～0.4g/L, ptfe emulsion (the quality percentage composition of tetrafluoroethylene is 60%, and particle diameter is 0.1 μ m～0.5 μ m) 15～30g/L; At first in deionized water, single nickel salt, sodium hypophosphite, lactic acid, sodium acetate, Sodium Fluoride dissolving are mixed, pH value with ammoniacal liquor adjustment solution is 4.6～5.2 again, then fluorine carbon type cats product and ptfe emulsion are mixed, after fully stirring, slowly join in the above-mentioned plating bath and fully and stir, bath temperature is slowly raise; Metallic substance is selected the Q235 carbon steel, at first with its polishing, oil removing, acid-wash activation, when treating that bath temperature is increased to 85 ℃～90 ℃, the Q235 carbon steel is positioned over carries out plating in the plating bath, keeping bath temperature is 85 ℃～90 ℃, behind the 90min carbon steel is taken out from plating bath, successively it is rinsed well, dry at 80 ℃～120 ℃ then with hot water, cold water and deionized water;
2) the gamma-ray irradiation pre-treatment of chemical nickeling phosphorus alloy film:
The chemical nickeling phosphorus alloy film of step " 1) " preparation is at first used ultrasonic cleaning 3～5min; After treating that its surface is dried, use then
60The Co gamma-rays carries out radiation treatment in air, irradiation intensity is 40～60kGy, and irradiation time is 30～60min, introduces superoxide and free radical on the tetrafluoroethylene particulate in coating;
3) the Sodium styrene sulfonate chemical modification liquid that grafting modification adopted that is used for the ni-p electroless plating alloy layer consists of:
A. Sodium styrene sulfonate 100～150g/L, acrylamide 4～7g/L, methylene-bisacrylamide 5～8g/L;
B. solvent for use is deionized water or distilled water;
C. the preparation of chemistry casting liquid can be carried out in air, also can carry out under the protection of inert nitrogen gas;
D. the addition sequence of each reagent is: Sodium styrene sulfonate, acrylamide, methylene-bisacrylamide;
4) adopt gamma-ray irradiation/Chemical Grafting Technique to prepare the preparation process of Sodium styrene sulfonate modified chemical plating nickel-phosphorus alloy coating:
A. the surface is used
60The chemical nickeling phosphorus alloy film that Co gamma-rays pre-irradiation is handled is dipped in the described chemical modification liquid of step " 3) ", and soak time is 30～45min;
B. chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove its surperficial excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
C. after thermal treatment finishes, chemical nickeling phosphorus alloy film is at first used 95% ethanolic soln soaking at room temperature 30min, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last;
5) the vinylformic acid chemical modification liquid that grafting modification adopted that is used for the ni-p electroless plating alloy layer consists of:
A. vinylformic acid 80～120g/L, acrylamide 4～7g/L, methylene-bisacrylamide 5～8g/L;
B. solvent for use is deionized water or distilled water;
C. the preparation of chemistry casting liquid can be carried out in air, also can carry out under the protection of inert nitrogen gas;
D. vinylformic acid neutralizes with sodium hydroxide solution, and degree of neutralization is 75%～85%;
E. the addition sequence of each reagent is: neutral vinylformic acid, acrylamide, methylene-bisacrylamide;
6) adopt gamma-ray irradiation/Chemical Grafting Technique to prepare the preparation process of acrylic acid modified ni-p electroless plating alloy layer:
A. the surface is used
60The chemical nickeling phosphorus alloy film that the Co gamma-ray irradiation is handled is dipped in the described chemical modification liquid of step " 5) ", and soak time is 30～45min;
B. chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove the coating surface excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
C. after thermal treatment finishes, chemical nickeling phosphorus alloy film is at first used 95% ethanolic soln soaking at room temperature 30min, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last.
The present invention is suitable equally to adopting reagent such as ptfe emulsion, fluorine carbon type cats product, Sodium styrene sulfonate, vinylformic acid to carry out the modification of nickel-phosphorus alloy coating of other types carbon steel, aluminium alloy, magnalium, plastics and ceramic surface.The present invention is to being main agents with ptfe emulsion, fluorine carbon type cats product, Sodium styrene sulfonate, vinylformic acid, and the surface modification that using plasma initiation/Chemical Grafting Technique is used for nickel-phosphorus alloy coating is suitable for too.
The invention has the beneficial effects as follows: this on ni-p electroless plating alloy layer surface evenly grafting have diactinic sulfonic acid of cation selective and carboxylic-acid functional group gamma-rays pre-irradiation/Chemical Grafting Technique, have advantages such as simple to operate, that grafting is even, improve the conventional chemical plating nickel-phosphorus alloy coating corrosive of anti-sodium chloride medium performance, improved the performance of the anti-local corrosion of nickel-phosphorus alloy coating.This invention has realized that nickel-phosphorus alloy coating effectively suppresses and slow down the migration infiltration of aggressiveness chlorion, effectively eliminated the corrosion harmfulness that chlorion exists metallic substance in the corrosive medium, improved the performance of the spot corrosion of nickel-phosphorus alloy coating resisting chloride ion penetration, crevice corrosion and intergranular corrosion, expanded the application of nickel-phosphorus alloy coating in fields such as petrochemical complex, robot calculator, device fabrication and printings.
Embodiment
Following mask body describes in detail and adopts gamma-rays pre-irradiation/Chemical Grafting Technique in conjunction with the embodiments, uses Sodium styrene sulfonate and vinylformic acid respectively, the preparation technology of modification ni-p electroless plating alloy layer.
Embodiment
1, gamma-ray irradiation/Chemical Grafting Technique prepares the technology of Sodium styrene sulfonate modification ni-p electroless plating alloy layer
(1) chemical nickel phosphorus plating coating prepares the preparation of used plating bath
Adopt Ni-P to prepare the nickel-phosphorus alloy coating of surface doping tetrafluoroethylene particulate, the process for preparation of 1L plating bath is: in beaker, with 25g single nickel salt, 20g lactic acid, 5g sodium acetate and 2.5g Sodium Fluoride with deionized water or dissolved in distilled water, temperature is 40 ℃～50 ℃ during dissolving, after treating that each reagent dissolves fully, bath temperature is cooled to room temperature;
In another beaker, the 30g sodium hypophosphite is at room temperature dissolved with proper amount of deionized water or distilled water;
Above-mentioned two kinds of solution are mixed, and fully stir, regulate the pH value of plating bath then with ammoniacal liquor, the pH value that makes plating bath is 4.8;
(model is: FC-4) (the quality percentage composition of tetrafluoroethylene is 60% with the 25g ptfe emulsion with 0.25g fluorine carbon type cats product, particle diameter is 0.1 μ m～0.5 μ m) thorough mixing, then tensio-active agent and ptfe emulsion mixed solution are slowly joined above-mentioned pH value and be in 4.8 the plating bath, magnetic agitation makes each component thorough mixing in the plating bath;
After treating that tensio-active agent and ptfe emulsion mixed solution add fully, bath temperature slowly is elevated to 85 ℃～90 ℃;
(2) preparation of chemical nickeling phosphorus alloy film
With the Q235 carbon steel polish successively, oil removing, acid-wash activation handle, and be clean with deionized water or distilled water flushing again, be positioned over rapidly then and carry out plating in the chemical plating fluid, magnetic agitation, keeping bath temperature is 85 ℃～90 ℃;
Behind the 90min, Q235 carbon steel plating piece is taken out from plating bath, successively it is rinsed well, dry processing at 80 ℃～120 ℃ then with hot water, cold water and deionized water;
(3) the gamma-ray irradiation pre-treatment of chemical nickeling phosphorus alloy film
Chemical nickeling phosphorus alloy film is at first used ultrasonic cleaning 3～5min; After treating that its surface is dried, use then
60The Co gamma-rays carries out radiation treatment in air, irradiation intensity is 40～60kGy, and irradiation time is 30～60min, introduces superoxide and free radical on the tetrafluoroethylene particulate in coating;
(4) preparation of Sodium styrene sulfonate chemical modification liquid
The process for preparation of 1L Sodium styrene sulfonate chemical modification is: with the Sodium styrene sulfonate of 120g with deionized water or dissolved in distilled water;
After treating that Sodium styrene sulfonate is dissolved fully, successively 5g acrylamide and 6g methylene-bisacrylamide are joined in the above-mentioned solution, stir fully dissolving, make its thorough mixing;
In the process for preparation of chemical modification liquid, guarantee that solution temperature can not be above 50 ℃;
(5) preparation of Sodium styrene sulfonate modification ni-p electroless plating alloy layer
The surface is used
60The chemical nickeling phosphorus alloy film that Co gamma-rays pre-irradiation is handled is dipped in the described chemical modification liquid of step " (4) ", and soak time is 30～45min;
Then chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove its surperficial excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
After thermal treatment finishes, chemical nickeling phosphorus alloy film was at first used 95% ethanolic soln soaking at room temperature 30 minutes, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last.
2, gamma-ray irradiation/Chemical Grafting Technique prepares the technology of acrylic acid modified chemical nickel phosphorus plating coating
(1) chemical nickel phosphorus plating coating prepares the preparation of used plating bath
Adopt Ni-P to prepare the nickel-phosphorus alloy coating of surface doping tetrafluoroethylene particulate, the process for preparation of 1L plating bath is: in beaker, with 25g single nickel salt, 20g lactic acid, 5g sodium acetate and 2.5g Sodium Fluoride with deionized water or dissolved in distilled water, temperature is 40 ℃～50 ℃ during dissolving, after treating that each reagent dissolves fully, bath temperature is cooled to room temperature;
In another beaker, the 30g sodium hypophosphite is at room temperature dissolved with proper amount of deionized water or distilled water;
Above-mentioned two kinds of solution are mixed, and fully stir, regulate the pH value of plating bath then with ammoniacal liquor, the pH value that makes plating bath is 4.8;
(model is: FC-4) (the quality percentage composition of tetrafluoroethylene is 60% with the 25g ptfe emulsion with 0.25g fluorine carbon type cats product, particle diameter is 0.1 μ m～0.5 μ m) thorough mixing, then tensio-active agent and ptfe emulsion mixed solution are slowly joined above-mentioned pH value and be in 4.8 the plating bath, magnetic agitation makes each component thorough mixing in the plating bath;
After treating that tensio-active agent and ptfe emulsion mixed solution add fully, bath temperature slowly is elevated to 85 ℃～90 ℃;
(2) preparation of chemical nickeling phosphorus alloy film
With the Q235 carbon steel polish successively, oil removing, acid-wash activation handle, and be clean with deionized water or distilled water flushing again, be positioned over rapidly then and carry out plating in the chemical plating fluid, magnetic agitation, keeping bath temperature is 85 ℃～90 ℃;
Behind the 90min, Q235 carbon steel plating piece is taken out from plating bath, successively it is rinsed well, dry processing at 80 ℃～120 ℃ then with hot water, cold water and deionized water;
(3) the gamma-ray irradiation pre-treatment of chemical nickeling phosphorus alloy film
Chemical nickeling phosphorus alloy film is at first used ultrasonic cleaning 3～5min; After treating that its surface is dried, use then
60The Co gamma-rays carries out radiation treatment in air, irradiation intensity is 40～60kGy, and irradiation time is 30～60min, introduces superoxide and free radical on the tetrafluoroethylene particulate in coating;
(4) preparation of vinylformic acid chemistry modification liquid
The process for preparation of 1L vinylformic acid chemistry modification is: the vinylformic acid of 100g is neutralized with aqueous sodium hydroxide solution, and degree of neutralization is 80%;
After treating that solution temperature is cold slightly, add acrylamide 5g, stir fully dissolving;
And then the 6g methylene-bisacrylamide joined in the mixed solution fully dissolving, make its thorough mixing;
In the process for preparation of chemical modification liquid, guarantee that solution temperature can not be above 50 ℃;
(5) preparation of acrylic acid modified chemical nickel phosphorus plating coating
The surface is used
60The chemical nickeling phosphorus alloy film that Co gamma-rays pre-irradiation is handled is dipped in the described chemical modification liquid of step " (4) ", and soak time is 30～45min;
Then chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove its surperficial excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
After thermal treatment finishes, chemical nickeling phosphorus alloy film was at first used 95% ethanolic soln soaking at room temperature 30 minutes, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last.
Claims (1)
1. the preparation technology of a Sodium styrene sulfonate and acrylic acid modified ni-p electroless plating alloy layer makes to be grafted with diactinic sulfonic acid of cation selective and carboxylic-acid functional group on the nickel-phosphorus alloy coating, and it is characterized in that: this preparation technology may further comprise the steps:
1) preparation of chemical nickeling phosphorus alloy film:
Adopt Ni-P to prepare the nickel-phosphorus alloy coating of surface doping tetrafluoroethylene particulate, consisting of of chemical plating fluid: single nickel salt 20～30g/L, sodium hypophosphite 20～35g/L, lactic acid 15～25g/L, sodium acetate 4～8g/L, Sodium Fluoride 2～4g/L, (model is fluorine carbon type cats product: FC-4) 0.2～0.4g/L, ptfe emulsion (the quality percentage composition of tetrafluoroethylene is 60%, and particle diameter is 0.1 μ m～0.5 μ m) 15～30g/L; At first in deionized water, single nickel salt, sodium hypophosphite, lactic acid, sodium acetate, Sodium Fluoride dissolving are mixed, pH value with ammoniacal liquor adjustment solution is 4.6～5.2 again, then fluorine carbon type cats product and ptfe emulsion are mixed, after fully stirring, slowly join in the above-mentioned plating bath and fully and stir, bath temperature is slowly raise; Metallic substance is selected the Q235 carbon steel, at first with its polishing, oil removing, acid-wash activation, when treating that bath temperature is increased to 85 ℃～90 ℃, the Q235 carbon steel is positioned over carries out plating in the plating bath, keeping bath temperature is 85 ℃～90 ℃, behind the 90min carbon steel is taken out from plating bath, successively it is rinsed well, dry at 80 ℃～120 ℃ then with hot water, cold water and deionized water;
2) the gamma-ray irradiation pre-treatment of chemical nickeling phosphorus alloy film:
The chemical nickeling phosphorus alloy film of step " 1) " preparation is at first used ultrasonic cleaning 3～5min; After treating that its surface is dried, use then
60The Co gamma-rays carries out radiation treatment in air, irradiation intensity is 40～60kGy, and irradiation time is 30～60min, introduces superoxide and free radical on the tetrafluoroethylene particulate in coating;
3) the Sodium styrene sulfonate chemical modification liquid that grafting modification adopted that is used for the ni-p electroless plating alloy layer consists of:
A. Sodium styrene sulfonate 100～150g/L, acrylamide 4～7g/L, methylene-bisacrylamide 5～8g/L;
B. solvent for use is deionized water or distilled water;
C. the preparation of chemistry casting liquid can be carried out in air, also can carry out under the protection of inert nitrogen gas;
D. the addition sequence of each reagent is: Sodium styrene sulfonate, acrylamide, methylene-bisacrylamide;
4) adopt gamma-ray irradiation/Chemical Grafting Technique to prepare the preparation process of Sodium styrene sulfonate modified chemical plating nickel-phosphorus alloy coating:
A. the surface is used
60The ni-p electroless plating alloy layer that Co gamma-rays pre-irradiation is handled is dipped in the described chemical modification casting liquid of step " 3) ", and soak time is 30～45min;
B. chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove its surperficial excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
C. after thermal treatment finishes, chemical nickeling phosphorus alloy film is at first used 95% ethanolic soln soaking at room temperature 30min, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last;
5) the vinylformic acid chemical modification liquid that grafting modification adopted that is used for the ni-p electroless plating alloy layer consists of:
A. vinylformic acid 80～120g/L, acrylamide 4～7g/L, methylene-bisacrylamide 5～8g/L;
B. solvent for use is deionized water or distilled water;
C. the preparation of chemistry casting liquid can be carried out in air, also can carry out under the protection of inert nitrogen gas;
D. vinylformic acid neutralizes with sodium hydroxide solution, and degree of neutralization is 75%～85%;
E. the addition sequence of each reagent is: neutral vinylformic acid, acrylamide, methylene-bisacrylamide;
6) adopt gamma-ray irradiation/Chemical Grafting Technique to prepare the preparation process of acrylic acid modified ni-p electroless plating alloy layer:
A. the surface is used
60The chemical nickeling phosphorus alloy film that the Co gamma-ray irradiation is handled is dipped in the described chemical modification casting liquid of step " 5) ", and soak time is 30～45min;
B. chemical nickeling phosphorus alloy film is taken out from chemical modification liquid, remove the coating surface excessive solution, place well heater to heat-treat, keep 80 ℃～120 ℃ of temperature, heat treatment time is 20～30min, and thermal treatment can be carried out in air or under the protection of inert gas atmosphere;
C. after thermal treatment finishes, chemical nickeling phosphorus alloy film is at first used 95% ethanolic soln soaking at room temperature 30min, rinse well with deionized water then, under 80 ℃～120 ℃ temperature, dry at last.
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| CN103834936A (en) * | 2012-11-27 | 2014-06-04 | 大连经济技术开发区圣洁真空技术开发有限公司 | Ni-P chemical composite plating process |
| CN103290397B (en) * | 2013-06-08 | 2016-08-10 | 广州市特种承压设备检测研究院 | Plating solution, preparation method and the anti-corrosive safety valve of a kind of relief valve surface super hydrophobic chemical deposit |
| CN103290397A (en) * | 2013-06-08 | 2013-09-11 | 广州市特种承压设备检测研究院 | Plating liquor of surface super-hydrophobic chemical clad layer of safety valve, preparation method and anti-corrosive safety valve |
| CN103774125A (en) * | 2014-02-10 | 2014-05-07 | 杭州广荣科技有限公司 | Thermal treatment method of chemical nickel-phosphate plating alloy layer of aluminium alloy |
| CN106103802A (en) * | 2014-04-11 | 2016-11-09 | 东洋钢钣株式会社 | Surface treatment base material |
| CN106103802B (en) * | 2014-04-11 | 2019-06-04 | 东洋钢钣株式会社 | It is surface-treated substrate |
| CN106142005A (en) * | 2014-11-06 | 2016-11-23 | 顺德工业股份有限公司 | Stapler and needle groove structure thereof |
| CN105624656A (en) * | 2015-12-30 | 2016-06-01 | 大连大学 | Chemically-plated Ni-P/Ni-Mo-P-PTFE composite structure plating layer and preparation method thereof |
| CN105624656B (en) * | 2015-12-30 | 2018-05-01 | 大连大学 | A kind of chemical Ni-P plating/Ni-Mo-P-PTFE composite structure platings and preparation method thereof |
| CN108796478A (en) * | 2018-06-29 | 2018-11-13 | 林忠华 | Chemical plating ni-sn-tungsten-phosphorus amorphous state multifunctional alloy plating solution and its coating |
| CN108796478B (en) * | 2018-06-29 | 2020-07-07 | 林忠华 | Electroless nickel-tin-tungsten-phosphorus amorphous multifunctional alloy plating solution and plating layer thereof |
| CN111394716A (en) * | 2019-01-03 | 2020-07-10 | 泰科电子(上海)有限公司 | Multi-coating stacked structure, preparation method and application thereof |
| CN111304639A (en) * | 2020-03-12 | 2020-06-19 | 佛山市众之助新材料科技有限公司 | Oil-free piston medical air compressor cylinder body and surface treatment process thereof |
| CN115821240A (en) * | 2022-11-30 | 2023-03-21 | 常州联德陶业有限公司 | Processing technology of scale-proof hydrophobic coating of ceramic heater and Ni-P/PTFE composite chemical plating solution thereof |
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