CN104213114A - Black film coating agent for metal surface treatment and application thereof - Google Patents
Black film coating agent for metal surface treatment and application thereof Download PDFInfo
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- CN104213114A CN104213114A CN201410486117.5A CN201410486117A CN104213114A CN 104213114 A CN104213114 A CN 104213114A CN 201410486117 A CN201410486117 A CN 201410486117A CN 104213114 A CN104213114 A CN 104213114A
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 239000007888 film coating Substances 0.000 title claims abstract description 34
- 238000009501 film coating Methods 0.000 title claims abstract description 34
- 238000004381 surface treatment Methods 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 20
- 239000008139 complexing agent Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000011734 sodium Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 229910001948 sodium oxide Inorganic materials 0.000 claims abstract description 14
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 12
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 12
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 claims abstract description 11
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229920001515 polyalkylene glycol Polymers 0.000 claims abstract description 10
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 10
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 17
- -1 polyoxyethylene Polymers 0.000 claims description 16
- 239000013530 defoamer Substances 0.000 claims description 15
- 230000008719 thickening Effects 0.000 claims description 14
- 229940120146 EDTMP Drugs 0.000 claims description 13
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000000796 flavoring agent Substances 0.000 claims description 9
- 235000019634 flavors Nutrition 0.000 claims description 9
- 239000002773 nucleotide Substances 0.000 claims description 9
- 125000003729 nucleotide group Chemical group 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- TVLJNOHNHRBUBC-SIHAWKHTSA-J [Na+].[Na+].[Na+].[Na+].O[C@@H]1[C@@H](COP([O-])([O-])=O)O[C@H]([C@@H]1O)n1cnc2c(O)ncnc12.Nc1nc2n(cnc2c(=O)[nH]1)[C@@H]1O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]1O Chemical compound [Na+].[Na+].[Na+].[Na+].O[C@@H]1[C@@H](COP([O-])([O-])=O)O[C@H]([C@@H]1O)n1cnc2c(O)ncnc12.Nc1nc2n(cnc2c(=O)[nH]1)[C@@H]1O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]1O TVLJNOHNHRBUBC-SIHAWKHTSA-J 0.000 abstract 1
- 239000002518 antifoaming agent Substances 0.000 abstract 1
- 235000013888 disodium 5'-ribonucleotide Nutrition 0.000 abstract 1
- 239000004193 disodium 5'-ribonucleotide Substances 0.000 abstract 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 abstract 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 abstract 1
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 abstract 1
- 239000004292 methyl p-hydroxybenzoate Substances 0.000 abstract 1
- 229960002216 methylparaben Drugs 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000002562 thickening agent Substances 0.000 abstract 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 15
- 235000006408 oxalic acid Nutrition 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 229940001516 sodium nitrate Drugs 0.000 description 2
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 2
- 229940039790 sodium oxalate Drugs 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 231100001010 corrosive Toxicity 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229940065287 selenium compound Drugs 0.000 description 1
- 150000003343 selenium compounds Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229960003010 sodium sulfate Drugs 0.000 description 1
- PODWXQQNRWNDGD-UHFFFAOYSA-L sodium thiosulfate pentahydrate Chemical compound O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O PODWXQQNRWNDGD-UHFFFAOYSA-L 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a black film coating agent for metal surface treatment and application thereof, and belongs to the field of organic/inorganic composite function materials. The black film coating agent comprises the following components in parts by weight: 1-5 parts of sodium nitrite, 3-5 parts of copper sulfate, 2-7 parts of disodium 5'-ribonucleotide, 3-8 parts of hydroxymethyl cellulose, 1-5 parts of sodium polyacrylate, 1-2 parts of poly alkylene glycol, 0.2-1 part of methylparaben, 7-12 parts of complexing agent, 0.5-2 parts of thickening agent, 0.2-0.8 part of antifoaming agent, and 40-70 parts of de-ionized water, wherein the complexing agent is a mixture of ethylene diamine tetra(methylene phosphonic acid) sodium and sodium hydroxide. On the basis that the ethylene diamine tetra(methylene phosphonic acid) sodium of the complexing agent can form coordination bonds and metal bonds with metals, the bonding force between film layers and the metals is prominently reinforced, the compactness and firmness of the films are improved, and the problem of uneven thicknesses of the film layers is effectively solved; and the black film coating agent has the advantages of easy degradation, low environmental pollution and low cost.
Description
Technical field
The invention belongs to organic/inorganic composite functional material field, specifically, relate to the film coating agent that can be used for preparing Metal surface anti-corrosion coating, more particularly, relate to a kind of blackout film coating agent for metal finishing and application thereof.
Background technology
Blackout is a kind for the treatment of process of metal protection, by forming the corrosion that layer oxide film prevents metal in metallic surface.Common blackening process method mainly contains heat blackening process method and room temperature blackening treatment process, blackening process method of heating due to its energy consumption high, there is selectivity and be subject to a definite limitation, room temperature blackening method is developed gradually, and not only energy consumption is low but also have the advantages such as energy-conservation, efficient, easy to operate for it.But conventional room temperature blacking liquid mostly is the compound system of selenium and copper, selenium compound is not only expensive but also hypertoxic, causes very large infringement, contaminate environment to the health of people.Existing room temperature blackening treatment agent also there is complexing agent and metallic cohesion is poor, film-formation result pays no attention to the problems such as difficult degradation, environmental pollution be serious thought of.
Chinese Patent Application No.: 201110163150.0, publication date on 06 17th, 2011, disclose the patent application document that a name is called a kind of stainless steel blackening agent for surface, this blackening agent for surface comprises the aqueous solution that sodium sulfate, SODIUMNITRATE, sodium oxalate and rare-earth salts are dissolved in deionized water formation, it is characterized in that: the content of described sodium sulfate is 20 ~ 40g/L, the content of described SODIUMNITRATE is 8 ~ 20g/L, and the content of described sodium oxalate is 3 ~ 8g/L, and the content of described rare-earth salts is 1 ~ 5g/L.Have the blackout time short, operative temperature just can be turned black at normal temperatures; Not containing the corrosives such as strong acid, highly basic, PH is neutral, in operating process to human body without any detrimentally affect.But in this blackening agent for surface short period of time, film-formation result is bad, poor adhesive force, time expand, is the blocked up and uneven thickness of rete then.
China Patent No. 201110447491.0, publication date on December 29th, 2011, disclose the patent document that a name is called a kind of blackening metal surfaces treatment agent, this invention is by the formulated mixed solution of following component, and in often liter of mixed solution, the weight part of each component is: dust technology 8-11g, primary ammonium phosphate 4-9g that the phosphoric acid 7-10g that Sulfothiorine 70-90g, concentration are 85%, concentration are 65%, surplus are water.Blackening process can be carried out to metal works at normal temperatures with the blackening agent for surface of this invention, energy consumption is low, but this hair blackening liquid exist seriously polluted, not easily degrade, it is weak and affect larger by PH to there is complexing power in phosphoric acid and phosphoric acid salt, blackout cost is high, and equipment is simple, easy to operate, the problems such as use range is wide, and the blackout time is long.
Summary of the invention
The problem that 1, will solve
Exist seriously polluted for existing metal hair blackening liquid, not easily degrade, coating effects is poor, the problems such as poor adhesive force, the invention provides a kind of blackout film coating agent for metal finishing and application thereof, it can form inner complex with metal by ethylenediamine tetraacetic methene sodium phosphate, by forming coordinate bond with metalwork and covalent linkage makes sticking power and density significantly improve, the Corrosion Protection of effective raising metal, especially with the addition of Walocel MT 20.000PV and sodium polyacrylate, great shortening film formation time and plated film are stablized, even film layer, this blackening agent for surface Heat stability is good, nontoxic, easy degraded, environmentally safe.
2, technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
A kind of blackout film coating agent for metal finishing, it is characterized in that: its composition and mass fraction: Sodium Nitrite 1-5 part, copper sulfate 3-5 part, flavour nucleotide disodium 2-7 part, Walocel MT 20.000PV 3-8 part, sodium polyacrylate 1-5 part, polyalkylene glycol 1-2 part, Tegosept M 0.2-1 part, complexing agent 7-12 part, thickening material 0.5-2 part, defoamer 0.2-0.8 part, deionized water 40-70 part; Described complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, and wherein the weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 5-7:1.
Preferably, described thickening material is polyacrylamide; Described defoamer is polyoxyethylene glycol and Soxylat A 25-7, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 2-3:1.
Preferably, the composition of the described blackout film coating agent for metal finishing and mass fraction Sodium Nitrite 3 parts, 4 parts, copper sulfate, flavour nucleotide disodium 4 parts, Walocel MT 20.000PV 5 parts, sodium polyacrylate 4 parts, polyalkylene glycol 1 part, Tegosept M 0.5 part, complexing agent 10 parts, thickening material 1.2 parts, defoamer 0.6 part, deionized water 60 parts; The weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 6:1, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 3:1.
A kind of application of blackout film coating agent in anti-corrosion of metal for metal finishing.
For a decomposition method for the blackout film coating agent of metal finishing, when the blackout film coating agent of foregoing metal finishing needs to decompose, adding 1mg Pt to the blackout film coating agent of every kilogram, is irradiate under the UV-light of 247nm at wavelength.
3, beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) a kind of blackout film coating agent for metal finishing of the present invention is by Sodium Nitrite, copper sulfate, flavour nucleotide disodium, Walocel MT 20.000PV, sodium polyacrylate, polyalkylene glycol, Tegosept M, complexing agent, thickening material, defoamer, deionized water forms, its complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, by forming coordinate bond with metal and covalent linkage significantly improves the complex ability with metal, facilitate compactness and the stability of blackout plated film, especially with the addition of Walocel MT 20.000PV and sodium polyacrylate, effectively shorten film formation time, improve the problem of thicknesses of layers inequality, defoamer is the mixture of polyoxyethylene glycol and Soxylat A 25-7, and defoaming effect significantly improves, and contributes to the uniformity coefficient and the density that improve rete,
(2) reaction product of a kind of blackout film coating agent for metal finishing of the present invention is easily decomposed, only need add 1mg Pt in the blackout film coating agent product of every kilogram, at wavelength be irradiate under the UV-light of 247nm namely rapid decomposable, clean environment firendly, environmental pollution are little, and raw material is cheap, production cost is low;
(3), during the application of the present invention in anti-corrosion of metal, the workpiece surface after process is smooth, thicknesses of layers is even, fine and close, resistance to corrosion is strong;
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1
A kind of blackout film coating agent for metal finishing, its composition and mass fraction: Sodium Nitrite 1 part, 5 parts, copper sulfate, flavour nucleotide disodium 2 parts, Walocel MT 20.000PV 3 parts, sodium polyacrylate 5 parts, polyalkylene glycol 1.5 parts, Tegosept M 1 part, complexing agent 7 parts, thickening material 2 parts, defoamer 0.8 part, deionized water 40 parts; Described complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, and wherein the weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 7:1; Described thickening material is polyacrylamide; Defoamer is polyoxyethylene glycol and Soxylat A 25-7, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 2:1.
The making step of above-mentioned blackout film coating agent is:
(A) take Sodium Nitrite and copper sulphate dissolves in proportion in deionized water, stir and fully dissolve;
(B) in step (A) gained solution, once add flavour nucleotide disodium, Walocel MT 20.000PV, sodium polyacrylate, polyalkylene glycol, Tegosept M, complexing agent, heat and stir 20 minutes;
(C) solution of step (B) is cooled to 25 DEG C, adds thickening material and defoamer stirs 15 minutes;
(D) fully blending dispersion evenly after, adopt 200 object deep bed filter to filter, the liquid after filtration is film coating agent, and above mark all takes according to mass fraction.
This blackout film coating agent being used for metal finishing is applied in anti-corrosion of metal, will be used for metallic screw surface-treated blackout film coating agent at normal temperatures to metallic screw blackening process.23 seconds plated film time, the plated film time greatly reduces, thickness 0.015 millimeter, smooth surface, and it is qualified that oxalic acid soaks.Film surface evenness is consistent with glossiness, rete is tack-free, the bonding force of rete and metallic surface is strong, especially during plated film in enormous quantities, the plated film at the general position contacted with fishing tool when picking up workpiece can damage, and plated film of the present invention does not worry this problem, can not cause damage to plated film itself during salvaging.In every kilogram of reacted blackout film coating agent, add 1mg Pt, be irradiate namely rapid decomposable under the UV-light of 247nm at wavelength, clean environment firendly, environmental pollution is little.
Embodiment 2
With embodiment 1, difference is this blackout film coating agent for metal finishing, its composition and mass fraction: Sodium Nitrite 3 parts, 4 parts, copper sulfate, flavour nucleotide disodium 4 parts, Walocel MT 20.000PV 5 parts, sodium polyacrylate 4 parts, polyalkylene glycol 1 part, Tegosept M 0.5 part, complexing agent 10 parts, thickening material 1.2 parts, defoamer 0.6 part, deionized water 60 parts; Described complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, and wherein the weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 6:1; Described thickening material is polyacrylamide; Defoamer is polyoxyethylene glycol and Soxylat A 25-7, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 3:1.This blackout film coating agent being used for metal finishing at normal temperatures can by pending workpiece blackening process.25 seconds plated film time, thickness 0.010 millimeter, smooth surface, oxalic acid immersion (5% oxalic acid soak time 4 hours) is qualified.Film surface evenness is consistent with glossiness, rete is tack-free, the bonding force of rete and metallic surface is strong, especially during plated film in enormous quantities, the plated film at the general position contacted with fishing tool when picking up workpiece can damage, and plated film of the present invention does not worry this problem, can not cause damage to plated film itself during salvaging.
Embodiment 3
With embodiment 1, difference is this blackout film coating agent for metal finishing, its composition and mass fraction: Sodium Nitrite 5 parts, 3 parts, copper sulfate, flavour nucleotide disodium 7 parts, Walocel MT 20.000PV 8 parts, sodium polyacrylate 1 part, polyalkylene glycol 2 parts, Tegosept M 0.2 part, complexing agent 12 parts, thickening material 0.5 part, defoamer 0.2 part, deionized water 70 parts; Described complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, and wherein the weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 5:1; Described thickening material is polyacrylamide; Defoamer is polyoxyethylene glycol and Soxylat A 25-7, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 2.5:1.This blackout film coating agent being used for metal finishing at normal temperatures can by pending workpiece blackening process.26 seconds plated film time, thickness 0.012 millimeter, smooth surface, oxalic acid immersion (5% oxalic acid soak time 4 hours) is qualified.Film surface evenness is consistent with glossiness, rete is tack-free, the bonding force of rete and metallic surface is strong, especially during plated film in enormous quantities, the plated film at the general position contacted with fishing tool when picking up workpiece can damage, and plated film of the present invention does not worry this problem, the plated film that the present invention produces has stronger toughness and intensity, can not cause damage during salvaging to plated film itself, even just plated film completes, during clamping, plated film also can not break.
Claims (5)
1. the blackout film coating agent for metal finishing, it is characterized in that: its composition and mass fraction: Sodium Nitrite 1-5 part, copper sulfate 3-5 part, flavour nucleotide disodium 2-7 part, Walocel MT 20.000PV 3-8 part, sodium polyacrylate 1-5 part, polyalkylene glycol 1-2 part, Tegosept M 0.2-1 part, complexing agent 7-12 part, thickening material 0.5-2 part, defoamer 0.2-0.8 part, deionized water 40-70 part; Described complexing agent is the mixture of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide, and wherein the weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 5-7:1.
2. the blackout film coating agent of a kind of metal finishing according to claim 1, is characterized in that: described thickening material is polyacrylamide; Described defoamer is polyoxyethylene glycol and Soxylat A 25-7, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 2-3:1.
3. the blackout film coating agent of a kind of metal finishing according to claim 1, it is characterized in that: Sodium Nitrite 3 parts, 4 parts, copper sulfate, flavour nucleotide disodium 4 parts, Walocel MT 20.000PV 5 parts, sodium polyacrylate 4 parts, polyalkylene glycol 1 part, Tegosept M 0.5 part, complexing agent 10 parts, thickening material 1.2 parts, defoamer 0.6 part, deionized water 60 parts; The weight ratio of ethylene diamine tetra methylene phosphonic acid sodium and sodium hydroxide is 6:1, and the mass ratio of polyoxyethylene glycol and Soxylat A 25-7 is 3:1.
4. the application of blackout film coating agent in anti-corrosion of metal for metal finishing.
5. the decomposition method for the blackout film coating agent of metal finishing, it is characterized in that, when being needed by the blackout film coating agent of the metal finishing in claim 1-3 to decompose, adding 1mg Pt to the blackout film coating agent of every kilogram, is irradiate under the UV-light of 247nm at wavelength.
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| CN201410486117.5A CN104213114A (en) | 2014-09-22 | 2014-09-22 | Black film coating agent for metal surface treatment and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410486117.5A CN104213114A (en) | 2014-09-22 | 2014-09-22 | Black film coating agent for metal surface treatment and application thereof |
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| CN104213114A true CN104213114A (en) | 2014-12-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835104A (en) * | 2016-12-16 | 2017-06-13 | 安徽宝恒新材料科技有限公司 | A kind of blackening process method of stainless steel |
| CN112226754A (en) * | 2020-10-19 | 2021-01-15 | 武汉科润表面新材料有限公司 | Non-washing acrylic acid chromium-free passivator suitable for aluminum profile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6447620B1 (en) * | 1998-06-01 | 2002-09-10 | Henkel Corporation | Water-based surface-treating agent for metallic material |
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| CN112226754A (en) * | 2020-10-19 | 2021-01-15 | 武汉科润表面新材料有限公司 | Non-washing acrylic acid chromium-free passivator suitable for aluminum profile |
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