CN115029708B - Low-foam alkali-resistant water-based metal cleaning agent - Google Patents
Low-foam alkali-resistant water-based metal cleaning agent Download PDFInfo
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- CN115029708B CN115029708B CN202210673843.2A CN202210673843A CN115029708B CN 115029708 B CN115029708 B CN 115029708B CN 202210673843 A CN202210673843 A CN 202210673843A CN 115029708 B CN115029708 B CN 115029708B
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- alkali
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- 239000006260 foam Substances 0.000 title claims abstract description 65
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003513 alkali Substances 0.000 title claims abstract description 38
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 28
- -1 alkyl diphenyl ether Chemical compound 0.000 claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 150000002191 fatty alcohols Chemical class 0.000 claims abstract description 17
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Natural products C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 13
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims abstract description 11
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 8
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 15
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 15
- 229920001451 polypropylene glycol Polymers 0.000 claims description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000001509 sodium citrate Substances 0.000 claims description 3
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 38
- 238000000034 method Methods 0.000 abstract description 26
- 238000009736 wetting Methods 0.000 abstract description 5
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 9
- 239000004721 Polyphenylene oxide Substances 0.000 description 8
- 229920000570 polyether Polymers 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 5
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- LGNQGTFARHLQFB-UHFFFAOYSA-N 1-dodecyl-2-phenoxybenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1OC1=CC=CC=C1 LGNQGTFARHLQFB-UHFFFAOYSA-N 0.000 description 3
- 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 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 239000013556 antirust agent Substances 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000002173 cutting fluid Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
- 229930182470 glycoside Natural products 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- XOYADKJBFVROKY-UHFFFAOYSA-N azane;phenoxybenzene Chemical compound N.C=1C=CC=CC=1OC1=CC=CC=C1 XOYADKJBFVROKY-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 1
- 235000019799 monosodium phosphate Nutrition 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate 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
- 238000005406 washing Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a low-foam alkali-resistant water-based metal cleaning agent, which is prepared from the following raw materials in percentage by weight: 1-15 parts of anionic surfactant, 5-19 parts of nonionic surfactant, 1-3 parts of inorganic auxiliary agent, 0-1 part of acrylic acid-maleic acid polymer, 5-10 parts of organic solvent and 50-75 parts of water; and mixing and stirring uniformly to obtain the low-foam alkali-resistant water-based metal cleaning agent. In the invention, the capped alcohol ether has a synergistic effect with the alkyl diphenyl ether sulfonate and the fatty alcohol polyoxyethylene polyoxypropylene ether sulfate, and the cleaning efficiency can be obviously improved after the capped alcohol ether is compounded; the obtained cleaning agent has low foam, easy rinsing, less waste water discharge and strong alkali resistance, and can be used under the condition of high alkali concentration; the cleaning agent has the function of wetting and reversing the surface of the workpiece, and can effectively prevent the greasy dirt on the upper layer of the cleaning solution from polluting the workpiece again in the process of taking out the workpiece after cleaning.
Description
Technical Field
The invention relates to a low-foam alkali-resistant water-based metal cleaning agent, and belongs to the field of metal cleaning agents.
Background
In the production, use and maintenance process of metal products, various dirt attached to the surfaces of the metal products needs to be cleaned, so that the smooth proceeding of processing procedures is ensured, rust and abrasion are prevented, the internal and surface quality of the products is ensured, and the service life is prolonged.
In order to improve the detergency of the cleaning agent, a certain amount of alkaline auxiliary agent is usually added in the actual cleaning process. Commonly used alkaline auxiliaries are sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium silicate, phosphate and the like. Wherein, the alkalinity of sodium hydroxide is strongest; sodium carbonate and sodium bicarbonate are alkaline after hydrolysis, so that grease can be loosened, dispersed, emulsified and saponified; sodium silicate exists in a colloid form after hydrolysis, has the functions of dispersing and stabilizing dirt, and has a certain corrosion inhibition effect on certain metal base materials; the phosphate comprises sodium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium tripolyphosphate, sodium pyrophosphate and the like, and the aqueous solution of the phosphate is alkaline and has good dispersing effect on large-particle dirt. The alkaline condition has strong capability of removing animal and vegetable grease, but the alkaline condition is too strong during cleaning, so that the surfactant in the cleaning agent can be decomposed or separated out, and the metal can be corroded. Therefore, screening of cleaning agent formulations suitable for strongly alkaline systems is of great importance for practical industrial cleaning processes.
The foam amount in the industrial cleaning process directly influences the cleaning process, and excessive foam amount causes foam overflow to cause waste or even stop of the cleaning agent, and the cleaning agent is difficult to rinse. The foam is too abundant, the foam remover needs to be added, but the addition of the foam remover can cause the problems of system turbidity, oil bleaching and the like, and the foam remover needs to be continuously added along with the extension of the cleaning time. Thus, the selection of a low-foaming surfactant formulation can solve a series of problems from the source caused by the excessive amount of foam.
Chinese patent CN112538633 discloses a recyclable metal cleaner and a preparation method thereof, which is prepared from the following raw materials in percentage by weight: 10-90% of water; 0.01-90% of composite antirust agent; 0.01-30% of monoethanolamine; 0.01-90% of anionic surfactant; 0.01-90% of nonionic surfactant; 0.01-90% of an amphoteric surfactant; 0.01-20% of solubilizer; 0.01-5% of wetting dispersant. The metal cleaning agent can be used as reuse water and directly added into a water-based metal cutting fluid tank, so that no extra cleaning waste liquid is generated, the basic performance of the cutting fluid is not affected, and the total waste liquid discharge amount can be greatly reduced. The anionic surfactant in the technical proposal disclosed in the patent contains phosphate and the amphoteric surfactant contains phosphate betaine, and the organic compound containing phosphorus can cause water pollution.
Chinese patent CN109825838 discloses a high-cleanliness metal cleaner and a method for prolonging the service life thereof, which is prepared from the following components in parts by weight: 2-5 parts of antirust agent, 5-8 parts of polyalcohol amine, 5-15 parts of sodium carbonate, 0.5-2 parts of sedimentation agent, 5-10 parts of auxiliary agent, 3-10 parts of alkyl glycoside, 2-5 parts of benzotriazole, 0.2-2 parts of pH regulator and 45-65 parts of water. The metal cleaning agent has the characteristics of high cleanliness and no residue, and is simultaneously suitable for nonferrous metals and ferrous metals and does not corrode the nonferrous metals; the stability is good, and the service cycle is long; the cleaning degree is high, special cleaning is not needed after cleaning, and the water paint can be directly sprayed without influence; meanwhile, the antirust agent has antirust property, and other antirust procedures are not needed among the procedures. The surfactant in the technical scheme is mainly alkyl glycoside, the component has abundant foam and is difficult to foam, the problems of foam overflow, difficult rinsing and the like can be caused, and the fluorocarbon surfactant is added in the formula, so that the raw material cost is extremely high.
The conventional industrial cleaning process at present has the following problems:
1. in the industrial cleaning process, especially for animal and vegetable grease, the proper addition of alkaline auxiliary agent greatly improves the cleaning effect, while the conventional surfactant is easy to separate out or decompose under the condition of high alkali concentration so as to influence the cleaning effect;
2. the greasy dirt is easy to be attached to the surface of the metal product again after the conventional water-based metal cleaning agent is used for cleaning, so that secondary pollution is caused;
3. after the conventional water-based metal cleaning agent is washed, a large amount of clear water is used for rinsing, the cleaning procedure is long, and a large amount of wastewater can be generated.
Disclosure of Invention
The invention aims to provide a low-foam alkali-resistant water-based metal cleaning agent which has good cleaning effect on various greasy dirt at low concentration and has the characteristics of low foam and easiness in rinsing.
The invention provides a low-foam alkali-resistant water-based metal cleaning agent, which is prepared from the following raw materials in percentage by weight: 1-15 parts of anionic surfactant, 5-19 parts of nonionic surfactant, 1-3 parts of inorganic auxiliary agent, 0-1 part of acrylic acid-maleic acid polymer, 5-10 parts of organic solvent and 50-75 parts of water.
And mixing and stirring the raw materials uniformly to obtain the low-foam alkali-resistant water-based metal cleaning agent.
The anionic surfactant is a compound obtained by mixing alkyl diphenyl ether sulfonate and fatty alcohol polyoxypropylene polyoxyethylene ether sulfate in any proportion;
further, the alkyl diphenyl ether sulfonate as described above has the structural formula:
or->
R = C m H 2m+1 ，R′= C n H 2n+1 M=8-18, n=0 or 8-18, m can be Na, K or NH 4 R and R' may be the same or different.
The structural formula of the fatty alcohol polyoxyethylene polyoxypropylene ether sulfate is as follows:
R = C z H 2z+1 z=8-18, x=1-15, y=1-15, m can be Na, K or NH 4 。
The nonionic surfactant described above is a capped alcohol ether; further, the capped alcohol ether structure as described above is as follows:
R(OCH 2 CH 2 ) c OR′
R = C a H 2a+1 ，R′= C b H 2b+1 ，a =8-18，b=1-4，c=1-15。
the inorganic auxiliary agent is one or more of sodium carbonate, sodium metasilicate and sodium citrate, and when a plurality of inorganic auxiliary agents are selected, the inorganic auxiliary agents are mixed in any proportion;
the organic solvent is one or more of methanol, ethanol, isopropanol and propylene carbonate, and is mixed in any proportion when several kinds are selected.
The end-capped alcohol ether product adopted by the technical scheme of the invention has extremely low foam and quick defoaming, the fatty alcohol polyoxypropylene polyoxyethylene ether sulfate contains EO and PO groups at the same time, the foam is loose and easy to foam, the compound system solves the problems of overflow of cleaning agent, difficult rinsing and the like caused by large foam amount in the industrial cleaning process from the source of raw materials, no additional defoamer is needed, and the waste of resources is avoided. However, the capped alcohol ether and the fatty alcohol polyoxypropylene polyoxyethylene ether sulfate have poor cleaning power, and the alkyl diphenyl ether sulfonate only has good cleaning effect on grease oil stains, and the three can not obtain good cleaning effect when being used alone or compounded with inorganic auxiliary agents. The invention can effectively reduce interfacial tension between oil and water and change wetting angle after compounding the three, thereby reducing contact area of oil droplets and metal surface, achieving the effect of stripping greasy dirt on the metal surface, and visually showing strong cleaning force on standard (GB/T35759-2017) greasy dirt. The fatty alcohol polyoxypropylene polyoxyethylene ether sulfate contains a PO group, and the alkyl diphenyl ether sulfonate has a multipolar functional group, so that the fatty alcohol polyoxypropylene polyoxyethylene ether sulfate and the multipolar functional group are mixed and adsorbed on the metal surface after being compounded, and a mixed adsorption layer can be formed with polar substances originally adsorbed on the surface, so that the wetting of the metal surface is reversed to be neutral, and the washed greasy dirt is not easy to be adhered back to the metal surface; and the polar substance can not be thoroughly desorbed from the metal surface, and the change is reversible, so that the subsequent processing process of the metal is not influenced after the metal is cleaned.
The invention has the beneficial effects that:
(1) The cleaning agent provided by the invention has low foam, is easy to rinse and has low wastewater discharge;
(2) The cleaning agent provided by the invention is resistant to strong alkali and can be used under the condition of high alkali concentration;
(3) The cleaning agent has a wetting inversion effect on the surface of the workpiece, so that the workpiece can be effectively prevented from being polluted again by the oil stain on the upper layer of the cleaning solution in the process of taking out the cleaned workpiece;
(4) The capped alcohol ether has a synergistic effect with alkyl diphenyl ether sulfonate and fatty alcohol polyoxyethylene polyoxypropylene ether sulfate, and the cleaning force can be obviously improved after the capped alcohol ether is compounded.
Detailed Description
The present invention is further illustrated by, but not limited to, the following examples.
Example 1:
1 part of dodecyl diphenyl ether disulfonate, 9 parts of octanol polyoxypropylene polyoxyethylene ether sodium sulfate, 10 parts of methyl end-capped fatty alcohol polyether, 1 part of sodium carbonate, 0.5 part of acrylic acid-maleic acid polymer (which can be purchased directly), 5 parts of ethanol and 73.5 parts of water, and uniformly stirring to obtain a low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 110g/L; measuring the foam of the product by a Roche foam instrument, wherein the initial foam volume is 30mL, and the foam volume of 5min is 5mL; the cleaning agent has a cleaning power of 99.3% and an oil stain back-tack of 0.0005g as measured by the method of GB/T35759-2017.
Alkali resistance test method: the state of the 3% aqueous cleaning agent solution under different NaOH concentrations is observed, and the highest NaOH concentration clarified by the solution is taken as alkali resistance. The data in the examples below were all measured with reference to this method.
The evaluation method for preventing greasy dirt from being back stuck comprises the following steps: 100mL of 3% cleaning agent aqueous solution is prepared, 1g of standard greasy dirt (GB/T35759-2017) is added into the aqueous solution, the aqueous solution is heated to 60 ℃ and stirred for 2min, a standard stainless steel test piece (GB/35759-2017) is placed into the aqueous solution, the aqueous solution is rinsed for 30s after swinging and washing for 3min, the aqueous solution is taken out and dried, the weight of the test piece before and after the test is weighed, the poor quality of the aqueous solution and the aqueous solution is taken as the greasy dirt back-sticking quantity, and the smaller the greasy dirt back-sticking quantity is, the better the greasy dirt back-sticking prevention effect is. The data in the examples below were all measured with reference to this method.
Example 2:
5 parts of dioctyl sodium diphenyl ether monosulphonate, 10 parts of octadecyl polyoxypropylene polyoxyethylene ether ammonium sulphate, 5 parts of butyl terminated aliphatic alcohol polyether, 2 parts of sodium citrate, 1 part of acrylic acid-maleic acid polymer, 7 parts of isopropanol and 70 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 110g/L, the foam of the product is determined by a Roche foam meter, the initial foam volume is 50mL, the foam volume of 5min is 10mL, the cleaning force of the cleaning agent is 99.1% and the greasy dirt back viscosity is 0.0007g according to the method of GB/T35759-2017. .
Example 3:
0.5 part of dioctadecyl diphenyl ether ammonium disulfonate, 0.5 part of dodecanol polyoxypropylene polyoxyethylene ether potassium sulfate, 19 parts of ethyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 10 parts of methanol and 66 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 110g/L, the foam is determined by a Rockwell foam meter, the initial foam volume is 30mL, the 5min foam volume is 5mL, the cleaning force of the cleaning agent is 99.9% and the greasy dirt back adhesion is 0.0003g according to the method of GB/T35759-2017.
Example 4:
7 parts of sodium hexadecyl diphenyl ether sulfonate, 5 parts of ammonium dodecyl polyoxypropylene polyoxyethylene ether sulfate, 8 parts of methyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 5 parts of isopropanol, 5 parts of propylene carbonate and 67 parts of water are uniformly stirred to obtain the low-foam alkali-resistant water-based metal cleaning agent, the alkali resistance is 120g/L, the foam of the product is measured by a Roche foam meter, the initial foam volume is 50mL, the foam volume of 5min is 15mL, the cleaning force of the cleaning agent is 99.1% and the greasy dirt back adhesion is 0.0004g according to the method of GB/T35759-2017.
Example 5:
10 parts of dodecyl diphenyl ether ammonium monosulphonate, 5 parts of dodecyl polyoxypropylene polyoxyethylene ether sodium sulphate, 5 parts of methyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 5 parts of propylene carbonate and 71 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 130g/L, the initial foam volume is 70mL, the 5-min foam volume is 20mL, the cleaning force of the cleaning agent is 98.7% and the greasy dirt back adhesion is 0.0006g according to the method of GB/T35759-2017.
Example 6:
5 parts of sodium dodecyl diphenyl ether monosulphonate, 1 part of tetradecyl polyoxypropylene polyoxyethylene ether sodium sulphate, 14 parts of ethyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 5 parts of isopropanol and 71 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 110g/L, the initial foam volume is 50mL, the foam volume of 5min is 15mL, the cleaning force of the cleaning agent is 99.1% and the greasy dirt back adhesion is 0.0002g according to the method of GB/T35759-2017.
Example 7:
5 parts of didodecyl diphenyl ether monosulfonate, 5 parts of isooctanol polyoxypropylene polyoxyethylene ether ammonium sulfate, 10 parts of methyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 5 parts of propylene carbonate and 71 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 120g/L, the initial foam volume is 70mL, the 5-min foam volume is 30mL, the cleaning force of the cleaning agent is 98.1% and the greasy dirt back adhesion is 0.0005g according to the method of GB/T35759-2017.
Comparative example 1:
10 parts of didodecyl diphenyl ether monosulfonate, 10 parts of dodecanol polyoxypropylene polyoxyethylene ether ammonium sulfate, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 5 parts of propylene carbonate and 71 parts of water, and uniformly stirring to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 100g/L, the initial foam volume is 170mL, the foam volume in 5min is 120mL, the cleaning force of the cleaning agent is 64.9% and the greasy dirt back adhesion is 0.0018g as measured by referring to a GB/T35759-2017 method.
Comparative example 2:
and (3) uniformly stirring 20 parts of methyl end-capped fatty alcohol polyether, 3 parts of sodium metasilicate, 1 part of acrylic acid-maleic acid polymer, 3 parts of isopropanol and 73 parts of water to obtain the low-foam alkali-resistant water-based metal cleaning agent, wherein the alkali resistance is 70g/L, the initial foam volume is 50mL, the 5min foam volume is 10mL, the cleaning force of the cleaning agent is 73.3% and the greasy dirt back-adhesion is 0.0114g according to the method of GB/T35759-2017.
According to the comparative example 1, only the anionic surfactant, the auxiliary agent and the solvent are added, the nonionic surfactant end capping alcohol ether is not added, the nonionic surfactant end capping alcohol ether, the auxiliary agent and the solvent are not added, the experimental data show that the comparative example 1 and the comparative example 2 are poor in cleaning force, large in greasy dirt back-adhesion amount, high in foam of the comparative example 1 and poor in alkali resistance, and the three surfactants provided by the invention have synergistic effects after being compounded, and are excellent in foam, alkali resistance, cleaning force and greasy dirt back adhesion prevention.
Claims (2)
1. A low-foam alkali-resistant water-based metal cleaning agent is characterized in that: the material comprises the following raw materials in percentage by weight: 1-15 parts of anionic surfactant, 5-19 parts of nonionic surfactant, 1-3 parts of inorganic auxiliary agent, 0-1 part of acrylic acid-maleic acid polymer, 5-10 parts of organic solvent and 50-75 parts of water;
mixing and stirring uniformly to obtain the low-foam alkali-resistant water-based metal cleaning agent;
the anionic surfactant is a compound obtained by mixing alkyl diphenyl ether sulfonate and fatty alcohol polyoxypropylene polyoxyethylene ether sulfate; the nonionic surfactant is capped alcohol ether;
the alkyl diphenyl ether sulfonate has the structural formula:
or->
R = C m H 2m+1 ，R′= C n H 2n+1 M=8-18, n=0 or 8-18, m can be Na, K or NH 4 R and R' may be the same or different;
the structural formula of the fatty alcohol polyoxypropylene polyoxyethylene ether sulfate is as follows:
；
R = C z H 2z+1 z=8-18, x=1-15, y=1-15, m can be Na, K or NH 4 ；
The end capped alcohol ether has the structural formula:
R(OCH 2 CH 2 ) c OR′
R = C a H 2a+1 ，R′= C b H 2b+1 ，a =8-18，b=1-4，c=1-15；
the inorganic auxiliary agent is one or more of sodium carbonate, sodium metasilicate and sodium citrate.
2. The low-foaming alkali-resistant water-based metal cleaner as claimed in claim 1, wherein: the organic solvent is one or more of methanol, ethanol, isopropanol and propylene carbonate.
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| US4844744A (en) * | 1987-03-19 | 1989-07-04 | Henkel Kommanditgesellschaft Auf Aktien | Liquid, phosphate-free single phase degreasing compositions |
| JP2016117784A (en) * | 2014-12-18 | 2016-06-30 | 花王株式会社 | Method for producing alkali detergent composition for steel sheet |
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