CN111850578A - Medium-low temperature phosphorus-free oil removing powder for surfaces of steel parts and preparation and use methods thereof - Google Patents
Medium-low temperature phosphorus-free oil removing powder for surfaces of steel parts and preparation and use methods thereof Download PDFInfo
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- CN111850578A CN111850578A CN202010692887.0A CN202010692887A CN111850578A CN 111850578 A CN111850578 A CN 111850578A CN 202010692887 A CN202010692887 A CN 202010692887A CN 111850578 A CN111850578 A CN 111850578A
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- 239000000843 powder Substances 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 32
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 22
- 238000005260 corrosion Methods 0.000 claims abstract description 21
- 230000007797 corrosion Effects 0.000 claims abstract description 21
- 239000003112 inhibitor Substances 0.000 claims abstract description 17
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 11
- 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 claims description 9
- 238000005238 degreasing Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 229910052708 sodium Inorganic materials 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 9
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- ZFAKTZXUUNBLEB-UHFFFAOYSA-N dicyclohexylazanium;nitrite Chemical group [O-]N=O.C1CCCCC1[NH2+]C1CCCCC1 ZFAKTZXUUNBLEB-UHFFFAOYSA-N 0.000 claims description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- 150000002466 imines Chemical class 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- 159000000000 sodium salts Chemical class 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 239000004711 α-olefin Substances 0.000 claims description 4
- AOMUHOFOVNGZAN-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)dodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CCO)CCO AOMUHOFOVNGZAN-UHFFFAOYSA-N 0.000 claims description 3
- 229930182478 glucoside Natural products 0.000 claims description 3
- -1 lauryl alcohol glucoside Chemical class 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 239000003513 alkali Substances 0.000 abstract description 7
- 238000005187 foaming Methods 0.000 abstract description 6
- 230000000536 complexating effect Effects 0.000 abstract description 4
- 238000011010 flushing procedure Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 64
- 235000019198 oils Nutrition 0.000 description 64
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000001035 drying Methods 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 5
- 230000001804 emulsifying effect Effects 0.000 description 5
- 239000008233 hard water Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- GYBINGQBXROMRS-UHFFFAOYSA-J tetrasodium;2-(1,2-dicarboxylatoethylamino)butanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC(C([O-])=O)NC(C([O-])=O)CC([O-])=O GYBINGQBXROMRS-UHFFFAOYSA-J 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- PMYUVOOOQDGQNW-UHFFFAOYSA-N hexasodium;trioxido(trioxidosilyloxy)silane Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])O[Si]([O-])([O-])[O-] PMYUVOOOQDGQNW-UHFFFAOYSA-N 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000668 effect on calcium Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- PYIDGJJWBIBVIA-UYTYNIKBSA-N lauryl glucoside Chemical compound CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O PYIDGJJWBIBVIA-UYTYNIKBSA-N 0.000 description 1
- 229940048848 lauryl glucoside Drugs 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000002347 octyl 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])[H] 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009736 wetting 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
- C23G1/18—Organic inhibitors
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses medium-low temperature phosphorus-free oil removing powder for surfaces of steel parts and preparation and use methods thereof, and belongs to the technical field of steel surface cleaning. A medium-low temperature phosphorus-free oil removal powder for surfaces of steel parts comprises the following raw materials in parts by weight: 10-60 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 1-10 parts of anionic surfactant, 1-40 parts of non-phosphorus builder and 1-5 parts of corrosion inhibitor. The invention also provides a preparation method and a using method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, and the oil removal rate can reach 99%. The medium-low temperature phosphorus-free oil removing powder for the surfaces of steel parts has a good oil removing effect. The medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, disclosed by the invention, does not contain phosphorus element, does not need to add strong alkali, and can be efficiently used in a weak alkali environment. The raw material has stable performance, good complexing effect, excellent biodegradability, no pollution, lower foaming and easy flushing.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to medium and low temperature phosphorus-free oil removing powder for the surfaces of steel parts and a preparation method and a use method thereof.
Background
In the electroplating industry, metal surface degreasing is a very important pretreatment process before electroplating. In general, metals are subjected to other treatments, such as machining, before being subjected to electroplating, and thus the metal surface tends to be contaminated to form an oil film. If the oil film is not treated, the quality of subsequent electroplating processing can be influenced, because the oil film isolates metal from ingot liquid during electroplating, the deposition of metal ions is influenced, and metal cannot be plated seriously or even; causing peeling, bubbling and the like, and simultaneously bringing the electrolyte into the plating tank to pollute the electrolyte, influence the plating layer structure and even cause scrapping of a large amount of products.
In addition, in the prior art, strong alkaline substances such as sodium hydroxide and potassium hydroxide and a surfactant are mostly used as main components of the oil removing powder, the oil removing powder can effectively remove grease on the surface of a material through saponification and emulsification, but the strong alkaline substances easily generate corrosion action on a protective film formed on the surface of a metal material, and a large amount of clean water is needed for washing.
Therefore, the development of the phosphorus-free oil removal powder which has little environmental pollution and no corrosion to the metal material of the workpiece has important significance for reducing industrial wastewater pollution and the processing water consumption of metal surface treatment, and is energy-saving and environment-friendly.
Disclosure of Invention
The invention aims to provide medium-low temperature phosphorus-free oil removing powder for the surfaces of steel parts, and a preparation method and a use method thereof. Has the advantages of stable raw material performance, good complexing effect, excellent biodegradability, no pollution, low foaming and easy flushing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a medium-low temperature phosphorus-free oil removal powder for surfaces of steel parts comprises the following raw materials in parts by weight: 10-60 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 1-10 parts of anionic surfactant, 1-40 parts of non-phosphorus builder and 1-5 parts of corrosion inhibitor.
Preferably, the phosphorus-free oil removal powder comprises the following raw material components in parts by weight: 30-50 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 3-8 parts of anionic surfactant, 25-40 parts of non-phosphorus builder and 1-4 parts of corrosion inhibitor.
Preferably, the non-phosphate builder is one or more of layered sodium metasilicate, sodium imine sulfonate, acrylic acid-maleic anhydride copolymer sodium salt and sodium iminodisuccinate.
Preferably, the nonionic surfactant is one or more of multi-branched isomeric tridecanol polyoxyethylene ether, capryl decyl alcohol polyoxyethylene ether, lauryl alcohol glucoside and cocodiethanolamide.
Preferably, the anionic surfactant is at least one of sodium alpha-olefin sulfonate, linear sodium dodecyl benzene sulfonate and sodium oleate.
Preferably, the corrosion inhibitor is dicyclohexylamine nitrite.
Further, the invention also provides a preparation method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, which comprises the following steps:
s1) weighing the raw materials for preparing the phosphorus-free oil removing powder;
s2) adding sodium carbonate, anionic surfactant and non-phosphate builder in the raw materials into a stirring kettle, and uniformly stirring at normal temperature and normal pressure;
s3) heating the nonionic surfactant in another container until the nonionic surfactant is melted into liquid, and then adding the liquid into the stirring kettle in the step S2 to be uniformly stirred, thus obtaining the phosphorus-free oil removing powder.
Further, the stirring speed in the step S2 is 70-80 r/min; the temperature range of the heating in step S3 is 60 to 70 ℃.
Furthermore, the invention also provides a use method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, which comprises the following steps:
p1) preparing an aqueous solution containing 5 percent of the phosphorus-free oil removing powder according to the mass percentage;
p2) the temperature of the aqueous solution is 30-40 ℃, and the workpiece to be processed is soaked in the aqueous solution for 3-8 minutes.
The invention has the beneficial effects that:
the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, disclosed by the invention, does not contain phosphorus element, does not need to add strong alkali, and can be efficiently used in a weak alkali environment. The raw material has stable performance, good complexing effect, excellent biodegradability, no pollution, lower foaming and easy flushing. The invention also provides a preparation method and a using method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, and the oil removal rate can reach 99%. The medium-low temperature phosphorus-free oil removing powder for the surfaces of steel parts has a good oil removing effect.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
A medium-low temperature phosphorus-free oil removal powder for surfaces of steel parts comprises the following raw materials in parts by weight: 10-60 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 1-10 parts of anionic surfactant, 1-40 parts of non-phosphorus builder and 1-5 parts of corrosion inhibitor.
According to the phosphorus-free oil removal powder, the nonionic surfactant and the anionic surfactant contained in the phosphorus-free oil removal powder generate a synergistic effect, so that the effects of improving the activity and stability of a metal cleaning agent and reducing the cost are achieved.
Preferably, the phosphorus-free oil removal powder comprises the following raw material components in parts by weight: 30-50 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 3-8 parts of anionic surfactant, 25-40 parts of non-phosphorus builder and 1-4 parts of corrosion inhibitor.
The phosphorus-free oil removal powder has the scheme that the raw material components comprise 30-50 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 3-8 parts of anionic surfactant, 25-40 parts of phosphorus-free builder and 1-4 parts of corrosion inhibitor, and has a better oil removal effect.
Preferably, the non-phosphate builder is one or more of layered sodium metasilicate, sodium imine sulfonate, acrylic acid-maleic anhydride copolymer sodium salt and sodium iminodisuccinate.
The layered sodium metasilicate as a washing assistant has strong independent oil removing capacity, adsorbs Ca2+ and Mg2+ in an aqueous solution in an ion exchange mode, has a quick and thorough exchange process, has a good synergistic effect with nonionic and anionic surfactants, has the effects of dispersing and emulsifying oil stains, has strong pH buffering capacity, is safe to use, has good biodegradability and cannot corrode metals. Compared with the crystal-type layered sodium disilicate, the crystal-type layered sodium disilicate has the advantages of better cost, good water solubility, environmental protection and no pollution.
The sodium imine sulfonate is a chelating agent with excellent performance, has slightly lower chelating capacity than the sodium tripolyphosphate of the traditional washing aid, has good chelating effect on Ca2+ and Mg2+, has good water softening performance, is chelated with heavy metal ions in oil stains to further deconstruct the oil stains, and is environment-friendly and pollution-free.
The acrylic acid-maleic anhydride copolymer sodium salt is an ion exchange type organic washing assistant with excellent performance, has very good biodegradability, is safe to use, has weak independent oil removal capability, and can show excellent synergistic effect when used together with a surfactant.
The sodium iminodisuccinate is an excellent chelating agent, can quickly soften hard water and deconstruct oil stains containing heavy metal ions, has a certain pH buffering effect, and has good biodegradability.
Preferably, the nonionic surfactant is one or more of multi-branched isomeric tridecanol polyoxyethylene ether, capryl decyl alcohol polyoxyethylene ether, lauryl alcohol glucoside and cocodiethanolamide.
The multi-branched chain isomeric tridecanol polyoxyethylene ether is an excellent emulsifier and dispersant, can simultaneously and rapidly strip and emulsify saponified grease and unsaponifiable grease, has strong hard water resistance, a cloud point of 70 ℃, a hydrophilic-hydrophobic balance HLB value of 11.4, certain defoaming capability, stable chemical property, good environmental compatibility and good biodegradability.
The octyl and decyl alcohol polyoxyethylene ether has excellent penetrating capacity and emulsifying capacity, good air bubble property and stable foam.
Lauryl glucoside has excellent emulsifying capacity, good foamability, rich foam, strong wetting capacity, high oil stain removal efficiency, no corrosion to metal, no cloud point and HLB value of 11.5.
The coconut oil diethanolamide has good emulsifying capacity, can quickly strip and emulsify the saponifiable oil and the unsaponifiable oil at the same time, has good foamability, stable foam, strong hard water resistance and no cloud point, and has very obvious synergistic effect with an anionic surfactant.
Preferably, the anionic surfactant is at least one of sodium alpha-olefin sulfonate, linear sodium dodecyl benzene sulfonate and sodium oleate.
The alpha-olefin sodium sulfonate A can greatly reduce the oil-water interfacial tension, has good wettability and hard water resistance, and has rich and stable foam and good biodegradability.
The straight-chain sodium dodecyl benzene sulfonate is stable in chemical property, not easy to oxidize, strong in emulsifying capacity, stable in foaming and strong in oil removing capacity, but poor in hard water resistance, and needs to be compounded with a builder with strong water softening capacity.
The sodium oleate is an excellent emulsifier and penetrant, is a compound consisting of two parts of a hydrophobic group and a hydrophilic group, has less foaming and can be used as a defoaming agent.
Preferably, the corrosion inhibitor is dicyclohexylamine nitrite.
The corrosion inhibitor uses dicyclohexylamine nitrite, can be adsorbed on the metal surface, and can obviously reduce the corrosion rate of steel by adding a small amount of the corrosion inhibitor.
Further, the invention also provides a preparation method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, which comprises the following steps:
s1) weighing the raw materials for preparing the phosphorus-free oil removing powder;
s2) adding sodium carbonate, anionic surfactant and non-phosphate builder in the raw materials into a stirring kettle, and uniformly stirring at normal temperature and normal pressure;
s3) heating the nonionic surfactant in another container until the nonionic surfactant is melted into liquid, and then adding the liquid into the stirring kettle in the step S2 to be uniformly stirred, thus obtaining the phosphorus-free oil removing powder.
Further, the stirring speed in the step S2 is 70-80 r/min; the temperature range of the heating in step S3 is 60 to 70 ℃.
The preparation method has the advantages of simple process, convenient operation, low cost and high economic benefit, and can be produced at normal temperature and normal pressure.
Furthermore, the invention also provides a use method of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts, which comprises the following steps:
P1) preparing an aqueous solution containing 5 percent of the phosphorus-free oil removing powder according to the mass percentage;
p2) the temperature of the aqueous solution is 30-40 ℃, and the workpiece to be processed is soaked in the aqueous solution for 3-8 minutes.
The medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts has low requirement on the use conditions, can achieve good oil removal effect after being soaked for 3-8 minutes at the normal temperature of 30-40 ℃, and is energy-saving and environment-friendly.
In conclusion, the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts does not contain phosphorus, does not need strong alkali, and can be efficiently used in a weak alkali environment. The raw material has stable performance, good complexing effect, excellent biodegradability, no pollution, lower foaming and easy flushing. When in use, the workpiece to be treated is soaked in the degreasing powder at 30-40 ℃ to be prepared into the water solution for 3-8 minutes, and the degreasing effect is good.
Examples
According to the technical scheme provided by the invention, the effectiveness of the technical scheme of the medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts is illustrated through embodiments and tests, and the effectiveness is specifically as follows.
1. The medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts is prepared according to the raw material components listed in the following table 1, and comprises the following steps:
S1) weighing the raw materials for preparing the phosphorus-free oil removing powder, wherein the raw materials comprise the following components in parts by weight: 10-60 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 1-10 parts of anionic surfactant, 1-40 parts of non-phosphorus builder and 1-5 parts of corrosion inhibitor;
s2) adding sodium carbonate, anionic surfactant and phosphorus-free builder in the raw materials into a stirring kettle, and uniformly stirring at normal temperature and normal pressure at the stirring speed of 70-80 r/min;
s3) heating the nonionic surfactant to 60-70 ℃ in another container to melt the nonionic surfactant into liquid, and then adding the liquid into the stirring kettle in the step S2 to stir uniformly to obtain the phosphorus-free oil removing powder.
2. The oil removal rate of each embodiment is detected according to a weight difference method, and the detection steps include:
D1) cleaning and drying the workpiece at 38-42 deg.C for 2hr, and weighing the weight W of the workpiece0；
D2) Soaking the workpiece to be treated in D1) in oil for 5 min, taking out, drying at 38-42 deg.C for 2hr, and weighing the weight W of the workpiece to be treated1；
D3) Soaking the workpiece to be treated in D2) in the phosphorus-free degreasing powder solution of the embodiment or the comparative example in the table 1 at the temperature and for the time set in the table 1, taking out the workpiece to be treated, rinsing the workpiece in pure water, drying the workpiece at the drying temperature of 38-42 ℃ for 2 hours, and weighing the weight W of the workpiece to be treated 2；
D4) Cleaning the workpiece to be processed in D3) with anhydrous alcohol or acetone, drying at 38-42 deg.C for 2hr, and weighing the weight W of the workpiece to be processed3；
3. According to the formula [ (W)1-W2)-(W0-W3)]/(W1-W0) Calculating the oil removal rate of each detection by multiplying by 100 percent;
4. in each example, 5 test samples were taken, and the average value of the test results is the oil removal rate of the example, and the specific test results are shown in table 1.
Table 1 compositions and test results of the examples
The above data were analyzed as follows:
1. the test results of examples 1 to 4 were analyzed, and it was found that examples 1 to 4 had good oil removal effects and the oil removal rates were all 85% or more.
2. Analyzing the test results of example 5, the raw materials of example 5 are: 30 parts of sodium carbonate; 1 part of non-phosphate builder; 1 part of nonionic surfactant; 1 part of anionic surfactant; the corrosion inhibitor is 1 part, the oil removal rate can still reach 82.5 percent, and the oil removal effect is still better.
3. The test results of examples 1 to 5 were analyzed, and it was found that the immersion time was 3 to 8 minutes, the immersion temperature was 30 to 40 ℃, the degreasing effect was good, and the influence of the immersion time and temperature on the degreasing effect was insignificant within this range.
4. The oil removing rate of the examples 2 and 3 is better than that of the examples 1, 4 or 5, the raw materials of the examples 2 to 3 comprise 30 to 50 parts of sodium carbonate, 1 to 10 parts of nonionic surfactant, 3 to 8 parts of anionic surfactant, 25 to 40 parts of non-phosphorus builder and 1 to 4 parts of corrosion inhibitor, and the oil removing effect is better.
In conclusion, the medium-low temperature phosphorus-free oil removal powder for the surfaces of the steel parts does not contain phosphorus element and does not need to add strong alkali, a workpiece to be treated is soaked in a 5% aqueous solution of the medium-low temperature phosphorus-free oil removal powder for the surfaces of the steel parts for 3-8 minutes at the temperature of 30-40 ℃, and the oil removal effect is good.
The medium-low temperature phosphorus-free oil removal powder for the surfaces of steel parts comprises, by weight, 30-50 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 3-8 parts of anionic surfactant, 25-40 parts of phosphorus-free builder and 1-4 parts of corrosion inhibitor, and has a better oil removal effect.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. The medium-low temperature phosphorus-free oil removing powder for the surfaces of steel parts is characterized by comprising the following raw materials in parts by weight: 10-60 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 1-10 parts of anionic surfactant, 1-40 parts of non-phosphorus builder and 1-5 parts of corrosion inhibitor.
2. The medium and low temperature phosphorus-free oil removing powder for the surfaces of steel parts according to claim 1, wherein the phosphorus-free oil removing powder comprises the following raw material components in parts by weight: 30-50 parts of sodium carbonate, 1-10 parts of nonionic surfactant, 3-8 parts of anionic surfactant, 25-40 parts of non-phosphorus builder and 1-4 parts of corrosion inhibitor.
3. The medium and low temperature phosphorus-free degreasing powder for surfaces of steel parts according to claim 2, wherein the phosphorus-free builder is one or more of layered sodium metasilicate, sodium imine sulfonate, acrylic acid-maleic anhydride copolymer sodium salt and sodium imidodisuccinate.
4. The medium and low temperature phosphorus-free oil removing powder for the surfaces of steel parts according to claim 2, wherein the nonionic surfactant is one or more of multi-branched isomeric tridecanol polyoxyethylene ether, capryl decyl alcohol polyoxyethylene ether, lauryl alcohol glucoside and coco diethanolamide.
5. The medium and low temperature phosphorus-free degreasing powder for the surfaces of steel parts as claimed in claim 2, wherein the anionic surfactant is at least one selected from sodium alpha-olefin sulfonate, linear sodium dodecyl benzene sulfonate and sodium oleate.
6. The medium and low temperature phosphorus-free oil removal powder for the surfaces of steel parts according to claim 2, wherein the corrosion inhibitor is dicyclohexylamine nitrite.
7. The method for preparing the medium and low temperature phosphorus-free oil removal powder for the surfaces of steel parts according to any one of claims 1 to 6, which is characterized by comprising the following steps:
s1) weighing the raw materials for preparing the phosphorus-free oil removing powder;
s2) adding sodium carbonate, anionic surfactant and non-phosphate builder in the raw materials into a stirring kettle, and uniformly stirring at normal temperature and normal pressure;
s3) heating the nonionic surfactant in another container until the nonionic surfactant is melted into liquid, and then adding the liquid into the stirring kettle in the step S2 to be uniformly stirred, thus obtaining the phosphorus-free oil removing powder.
8. The method for preparing medium and low temperature phosphorus-free degreasing powder for the surfaces of steel parts according to claim 7, wherein the stirring speed in the step S2 is 70-80 r/min; the temperature range of the heating in step S3 is 60 to 70 ℃.
9. The use method of the medium and low temperature phosphorus-free oil removal powder for the surfaces of steel parts according to any one of claims 1 to 6, is characterized by comprising the following steps:
p1) preparing an aqueous solution containing 5 percent of the phosphorus-free oil removing powder according to the mass percentage;
P2) the temperature of the aqueous solution is 30-40 ℃, and the workpiece to be processed is soaked in the aqueous solution for 3-8 minutes.
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| CN114540825A (en) * | 2021-03-15 | 2022-05-27 | 广东多创新材料科技有限公司 | Oil-removing wax-removing powder and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114540825A (en) * | 2021-03-15 | 2022-05-27 | 广东多创新材料科技有限公司 | Oil-removing wax-removing powder and preparation method thereof |
| CN113684525A (en) * | 2021-08-25 | 2021-11-23 | 聊城大学 | Environment-friendly electric cleaning degreasing agent for shield tunneling machine cutter head and degreasing method thereof |
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