CN112941527B - Environment-friendly normal-temperature degreasing agent and preparation method thereof - Google Patents
Environment-friendly normal-temperature degreasing agent and preparation method thereof Download PDFInfo
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- CN112941527B CN112941527B CN202110124949.2A CN202110124949A CN112941527B CN 112941527 B CN112941527 B CN 112941527B CN 202110124949 A CN202110124949 A CN 202110124949A CN 112941527 B CN112941527 B CN 112941527B
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- 238000005237 degreasing agent Methods 0.000 title claims abstract description 82
- 239000013527 degreasing agent Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000004094 surface-active agent Substances 0.000 claims abstract description 28
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 239000002736 nonionic surfactant Substances 0.000 claims description 10
- -1 cationic quaternary ammonium salt Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229940061605 tetrasodium glutamate diacetate Drugs 0.000 claims description 6
- UZVUJVFQFNHRSY-OUTKXMMCSA-J tetrasodium;(2s)-2-[bis(carboxylatomethyl)amino]pentanedioate Chemical group [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC[C@@H](C([O-])=O)N(CC([O-])=O)CC([O-])=O UZVUJVFQFNHRSY-OUTKXMMCSA-J 0.000 claims description 6
- 239000002738 chelating agent Substances 0.000 claims description 5
- 239000002280 amphoteric surfactant Substances 0.000 claims description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 43
- 239000010960 cold rolled steel Substances 0.000 abstract description 23
- 229910000831 Steel Inorganic materials 0.000 abstract description 22
- 239000010959 steel Substances 0.000 abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 238000007127 saponification reaction Methods 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011574 phosphorus Substances 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011593 sulfur Substances 0.000 abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000010703 silicon Substances 0.000 abstract description 4
- 229910052710 silicon Inorganic materials 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000000137 annealing Methods 0.000 description 12
- 238000005238 degreasing Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 239000006260 foam Substances 0.000 description 9
- 239000004519 grease Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000012459 cleaning agent Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 238000004945 emulsification Methods 0.000 description 4
- 150000002191 fatty alcohols Chemical class 0.000 description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 3
- 241000953555 Theama Species 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 239000000176 sodium gluconate Substances 0.000 description 3
- 235000012207 sodium gluconate Nutrition 0.000 description 3
- 229940005574 sodium gluconate Drugs 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- 239000013556 antirust agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 2
- 235000010234 sodium benzoate Nutrition 0.000 description 2
- 239000004299 sodium benzoate Substances 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- 239000001488 sodium phosphate Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 2
- 235000019801 trisodium phosphate Nutrition 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 1
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- MRUAUOIMASANKQ-UHFFFAOYSA-O carboxymethyl-[3-(dodecanoylamino)propyl]-dimethylazanium Chemical compound CCCCCCCCCCCC(=O)NCCC[N+](C)(C)CC(O)=O MRUAUOIMASANKQ-UHFFFAOYSA-O 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229940075468 lauramidopropyl betaine Drugs 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 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 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- DZCAZXAJPZCSCU-UHFFFAOYSA-K sodium nitrilotriacetate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CC([O-])=O DZCAZXAJPZCSCU-UHFFFAOYSA-K 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 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
- C23G1/19—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)
Abstract
The invention discloses an environment-friendly normal-temperature degreasing agent and a preparation method thereof, compared with the conventional alkaline degreasing agent, the environment-friendly normal-temperature degreasing agent avoids heat energy sources such as steam and the like consumed by high-temperature saponification, and the application temperature is 10-40 ℃, so that the cleaning energy consumption is greatly reduced, and the cleaning cost is saved; the composite material does not contain phosphorus, sulfur and silicon, and the adopted surfactant can be biologically degraded, and belongs to an environment-friendly degreasing agent; dirt such as greasy dirt and iron powder can be rapidly stripped and emulsified from the surface of the cold-rolled steel plate at the temperature of 10-40 ℃, then saponified, and sedimentation and separation of the dirt in a degreasing agent circulating tank are realized, so that the cleaned dirt is prevented from adhering to the surface of the steel plate along with circulating flowing of cleaning liquid again, the cleaning period is greatly shortened, the cold-rolled steel plate with high surface cleanliness is obtained, and the excellent adhesive force of a later-stage coating on the surface of the cold-rolled steel plate is ensured. The preparation method of the environment-friendly normal-temperature degreasing agent has the advantages of simple operation steps, high feasibility of preparation and implementation and strong practicability.
Description
Technical Field
The invention relates to the technical field of metal degreasing agents, in particular to an environment-friendly normal-temperature degreasing agent and a preparation method thereof.
Background
In the process of pickling and cold rolling cold rolled steel sheets (coils) such as cold rolled silicon steel sheets, automobile sheets and the like, rolling oil (emulsion) composed of various grease (such as natural grease, synthetic grease and the like), antirust agent, extreme pressure resistant agent and the like is generally used for lubricating, cooling and temporarily preventing rust of the rolled steel sheets, so that the rolling oil (mainly grease) remains on the surface after the rolling of the steel sheets is finished, and before the rolled steel sheets (coils) are continuously annealed, residual greasy dirt and iron powder remaining on the steel sheets in the rolling process must be removed by chemical degreasing, electrolytic degreasing and the like so as to prevent the carburization and the formation of carbonaceous dirty on the surfaces of the steel sheets caused by the carbonization of the residual greasy dirt and the iron powder in the annealing process, thereby avoiding the influence on the performance and quality of the steel sheets in the subsequent process of coating or other surface processing treatment. Thus, it is necessary to clean the surface of the cold-rolled steel sheet (coil) with degreasing agents to remove grease, dirt, iron powder, and the like. The degreasing process of the cold-rolled steel coil continuous annealing production line is generally provided with a spraying and brushing (brush roll reversely rotating) section, and an electrolytic degreasing section is additionally arranged on a high-speed (strip steel speed is more than 600 m/min) annealing line for further improving the surface quality. The main process parameters of these continuous annealing line degreasing sections are typically: the spray pressure of the degreasing agent is 0.2-0.4 MPa, and the cleaning temperature is 60-85 ℃.
In the prior patent literature, a plurality of special degreasing agent technical schemes for continuous annealing line production are disclosed: patent No. ZL93109825.4 discloses a cleaning agent for cleaning cold rolled silicon steel plates, which comprises 20-30% of sodium hydroxide, 50-60% of sodium silicate, 10-15% of sodium tripolyphosphate, 1-6% of alkylphenol ethoxylates and 1-6% of fatty alcohol ethoxylates, wherein the cleaning agent contains phosphate, and the surfactant also contains an alkylphenol ethoxylate compound (APEO) which is not environment-friendly, so that the foam of the degreasing agent is more and the cleaning effect is limited; patent No. ZL200510022869.7 discloses an alkaline detergent composition for electrolytic cleaning of cold rolled steel sheet, typically comprising 33-42% sodium hydroxide, 0.5-20% alkyl polyoxyethylene ether surfactant, 1-8% water-soluble macromolecular carboxylic acid and 0.5-15% aldonic acid, the balance being water, the alkaline detergent composition has higher alkali concentration and good fluidity, and still has good cleaning effect at low temperature (not higher than 50 ℃), in addition, the patent document also carries out cleaning effect comparison test on various polyoxyethylene alkyl ether surfactants; the patent number ZL200810123991.7 discloses an anti-emulsifying water-based metal cleaning agent, which is characterized in that greasy dirt can not be stably dispersed in the cleaning agent to form emulsion, but rather form larger oil particles to float on the surface of the cleaning agent for separation, wherein the formula comprises 3-7% of nonionic surfactant selected from fatty amine polyoxypropylene ether or alkylphenol polyether, 3-7% of zwitterionic surfactant selected from alkyl dimethylaminoacetic betaine and lauramidopropyl betaine, 1-5% of chelating agent selected from sodium citrate, tetra sodium ethylenediamine tetraacetate and sodium nitrilotriacetate, 1-5% of antirust agent selected from sodium tetraborate, sodium nitrite, sodium benzoate and long carbon chain carboxylic acid amine, 5-10% of inorganic builder selected from trisodium phosphate, sodium metasilicate, sodium carbonate, sodium bicarbonate and sodium hydroxide, and the balance of water; the patent number ZL201010201620.3 discloses a degreasing agent for producing a coated steel plate and a preparation method thereof, wherein the degreasing agent comprises 5-10% of polyethylene glycol as an additive, 10-15% of nonionic surfactant as a surfactant, 3-6% of one or more of molybdate, silicate and sodium benzoate as a corrosion inhibitor, and the balance of inorganic alkaline aqueous solution, and is characterized by having sufficient degreasing effect and being not easy to corrode a galvanized layer; patent No. ZL201210150010.4 discloses a special surfactant composition for spraying low-foam cleaning and a preparation method thereof, and the special surfactant composition has the advantages of low foam, good cleaning power, difficult precipitation in alkaline solution, easy rinsing, environmental protection and the like, and comprises the following components in parts by weight: 30-70 parts of fatty alcohol polyoxyethylene polyoxypropylene ether, 1-30 parts of tea saponin, 0.1-20 parts of fatty alcohol polyoxyethylene ether, 1-20 parts of span S-80, 0.01-1 part of cellulose and a pH value adjusting solution for adjusting the pH value to be 6-8, wherein the pH value adjusting solution is 30-50% potassium hydroxide solution; patent number ZL201110336935.3, disclose a cold-rolled sheet before hot galvanizing degreasing fluid, contain octyl phenol polyoxyethylene (10) ether 0.5-2.0%, sodium dodecyl benzene sulfonate 0.3-1.2%, sodium carbonate 3-5%, monoethanolamine 1-2%, sodium gluconate 2-4%, sodium hydroxide 22-30%, the rest is water, this patent has no phosphorus environmental protection, the long-term storage stability of liquid degreasing agent is good, there is no crystallization and liquid stratification, easy to use; the degreasing efficiency is high, the zinc plating is uniformly adhered, and the adhesion force of a zinc layer is strong; the patent number ZL201510091971.6 discloses a low-foam liquid degreasing agent for a continuous annealing production line of cold-rolled strip steel, which is prepared by adopting a novel low-foam surfactant prepared by epoxy modification of fatty alcohol and a phosphate surfactant to be compounded and dissolved in a high-concentration sodium hydroxide solution, and simultaneously using chemicals such as sodium gluconate, EDTA, HEDP, acrylate, polyacrylamide and the like as auxiliary agents to replace polyoxyethylene ether surfactants in the original degreasing agent, so that the consumption of the degreasing agent generated by foam for cleaning the strip steel is solved, and meanwhile, foam generated by an active agent brought in a previous procedure is also inhibited; the invention patent application 201510107576.2 discloses a degreasing agent for a cold rolling continuous annealing unit, which comprises 12-36% of sodium hydroxide, 0-6% of potassium hydroxide, 1-5% of sodium carbonate, 1-5% of trisodium phosphate, 1-6% of sodium gluconate, 0.5-2% of ethylenediamine tetraacetic acid, 0.5-2% of sodium polyacrylate, 0.5-2% of nonylphenol polyoxyethylene ether, 0.5-2% of anionic phosphate surfactant and the balance of desalted water.
In the published patent literature data, degreasing agents mainly depend on wetting and emulsifying effects of surfactants and saponification effects of inorganic alkali to achieve the effect of removing oil stains on the surface of strip steel; the degreasing agent solution is heated to the working temperature of 60-85 ℃, so that the saponification speed can be improved, and the degreasing effect can be accelerated.
In addition, phosphate, silicate and sulfur-containing substances are generally adopted as degreasing components in the conventional degreasing agents, wherein the phosphate is mainly used as an anionic surfactant and has emulsification and dispersion effects; the silicate is dissolved to obtain free base, and the dirt is saponified and removed by osmosis and expansion. As is well known, phosphorus and sulfur-containing substances have heavy environmental pollution, and strict index control is adopted; and silicate is very easy to adhere to the surface of the steel plate after cleaning, so that a coating on the surface of the steel plate is fogged and the combination of a substrate and the coating is affected.
For the development trend of degreasing agents, the key points are as follows: on the premise of guaranteeing the cleaning effect, the use cost of a user (steel mill) is reduced, the environment protection of raw materials is realized, and the requirement of simple post treatment of the cleaning wastewater is met. In the key points, the degreasing and cleaning working temperature is reduced, so that the consumption of heating steam (or electricity consumption and natural gas consumption) of a steel mill is reduced, and the core requirement of reducing the cost of the steel mill is achieved; the degreasing agent raw material environment protection requirement is achieved without using APEO-containing surfactant, inorganic salt containing phosphorus or surfactant. The degreasing agent for the continuous annealing line cleaning unit and the technical proposal thereof are still mostly made of all nonionic surfactant or anionic surfactant and nonionic surfactant compound systems, and the cleaning temperature is mainly high temperature (60 ℃ to 85 ℃). To reduce the cleaning temperature of the continuous annealing line, improve the environmental protection of the degreasing agent and remove the rolling oil and the iron powder (the total residual oil and the residual iron is less than or equal to 10 mg/m) remained on the surface of the cold-rolled steel plate 2 ) The bookThe patent provides an environment-friendly normal-temperature degreasing agent and a preparation method thereof.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an environment-friendly normal-temperature degreasing agent and a preparation method thereof, compared with the conventional alkaline degreasing agent, the environment-friendly normal-temperature degreasing agent avoids heat energy sources such as steam and the like consumed by high-temperature saponification, and the application temperature is 10-40 ℃, so that the cleaning energy consumption is greatly reduced, and the cleaning cost is saved; the composite material does not contain phosphorus, sulfur and silicon, and the adopted surfactant can be biologically degraded, and belongs to an environment-friendly degreasing agent; dirt such as greasy dirt and iron powder can be rapidly stripped and emulsified from the surface of the cold-rolled steel plate at the temperature of 10-40 ℃, then saponified, and sedimentation and separation of the dirt in a degreasing agent circulating tank are realized, so that the cleaned dirt is prevented from adhering to the surface of the steel plate along with circulating flowing of cleaning liquid again, the cleaning period is greatly shortened, the cold-rolled steel plate with high surface cleanliness is obtained, and the excellent adhesive force of a later-stage coating on the surface of the cold-rolled steel plate is ensured. The preparation method of the environment-friendly normal-temperature degreasing agent has the advantages of simple operation steps, high feasibility of preparation and implementation and strong practicability.
In order to achieve the purpose, the technical scheme of the invention is to design an environment-friendly normal-temperature degreasing agent, which comprises the following components in percentage by mass: 10 to 12 percent of potassium hydroxide, 1 to 3 percent of chelating agent, 0.5 to 1 percent of fluorocarbon surfactant, 1 to 2 percent of amphoteric surfactant, 0.2 to 0.8 percent of cationic quaternary ammonium salt surfactant, 1.2 to 1.5 percent of nonionic surfactant and the balance of water.
The preferable technical scheme is that the chelating agent is tetrasodium glutamate diacetate, the fluorocarbon surfactant is of the model of Capstone FS-3100, the amphoteric surfactant is of the model of AMA LF70, the cationic quaternary ammonium salt surfactant is of the model of Ethoquad C/12, and the nonionic surfactant is of the model of Genapol EP2454.
Further preferable technical scheme is that the water is pure water.
In order to ensure the smooth preparation and application implementation of the environment-friendly normal-temperature degreasing agent, a preparation method of the environment-friendly normal-temperature degreasing agent is currently provided, which comprises the following steps:
s1: adding potassium hydroxide into pure water under the condition of stirring at normal temperature according to the mass percentage, and uniformly stirring to obtain a primary premixed solution;
s2: when the primary premixed solution is cooled to 5-40 ℃, adding tetra sodium glutamate diacetate into the primary premixed solution prepared in the step S1 according to the mass percent, and uniformly stirring to obtain a secondary premixed solution;
s3: according to the mass percentage, the Capstone FS-3100, the AMA LF70 and the Ethoquad C/12 are sequentially added into the secondary premix solution prepared in the step S2, and the mixture is stirred uniformly to obtain a tertiary premix solution;
s4: and (3) when the three-time premix solution is cooled to 5-35 ℃, adding Genapol EP2454 into the three-time premix solution prepared in the step (S3) under stirring, and uniformly stirring to obtain the environment-friendly normal-temperature degreasing agent.
In a further preferable technical scheme, in the step S2, the stirring time after the materials are added is 10-30 min; in the step S3, the stirring time after the materials are added is 10-60 min; in the step S4, the stirring time after the materials are added is 10-20 min.
The invention has the advantages and beneficial effects that:
1. compared with the conventional alkaline degreasing agent, the environment-friendly normal-temperature degreasing agent avoids heat energy sources such as steam and the like consumed by high-temperature saponification, and the application temperature is 10-40 ℃, so that the cleaning energy consumption is greatly reduced, and the cleaning cost is saved; the composite material does not contain phosphorus, sulfur and silicon, and the adopted surfactant can be biologically degraded, and belongs to an environment-friendly degreasing agent.
2. The environment-friendly normal-temperature degreasing agent is used for cleaning products such as cold-rolled steel plates and the like in a coil steel continuous annealing production line, does not need to be mixed with other components, does not need to be added with a defoaming agent, and is simple in cleaning operation steps.
3. According to the environment-friendly normal-temperature degreasing agent disclosed by the invention, dirt such as greasy dirt and iron powder can be rapidly stripped from the surface of a cold-rolled steel plate at the temperature of 10-40 ℃, emulsified and saponified, sedimentation and separation of the dirt in a degreasing agent circulating tank are realized, the cleaned dirt is prevented from adhering to the surface of the steel plate along with circulating flowing of cleaning liquid again, the cleaning period is greatly shortened, the cold-rolled steel plate with high surface cleanliness is obtained, and the excellent adhesive force of a later-stage coating on the surface of the cold-rolled steel plate is ensured.
4. The environment-friendly normal-temperature degreasing agent provided by the invention can be biodegraded, has good environmental friendliness, and is obvious in synergistic effect through a plurality of active components on the performances of saponification, decontamination, emulsification, clean cleaning and the like.
5. The preparation method of the environment-friendly normal-temperature degreasing agent has the advantages of simple operation steps, high feasibility of preparation and implementation and strong practicability.
Detailed Description
The following describes the invention in further detail with reference to examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
An environment-friendly normal-temperature degreasing agent comprises the following components in percentage by mass:
the preparation method of the environment-friendly normal-temperature degreasing agent in the embodiment 1 comprises the following steps:
s1: adding pure water into a stirring kettle provided with a thermometer, a stirrer and a dropping device according to the mass percentage, introducing cooling circulating water into a jacket of the stirring kettle, adding potassium hydroxide into the pure water in a stirring state, and uniformly stirring to obtain a primary premixed solution;
s2: when the primary premixed solution is cooled to 5-40 ℃, adding tetra sodium glutamate diacetate into the primary premixed solution prepared in the step S1 according to the mass percent, and stirring for 10-30 min to ensure that the solution is uniform, thus obtaining a secondary premixed solution;
s3: according to the mass percentage, the Capstone FS-3100, the AMA LF70 and the Ethoquad C/12 are sequentially added into the secondary premix solution prepared in the step S2, and the mixture is stirred for 10 to 60 minutes to ensure that the solution is uniform, thus obtaining a tertiary premix solution;
s4: and (3) when the three-time premixed solution is cooled to 5-35 ℃, adding Genapol EP2454 into the three-time premixed solution prepared in the step (S3) under stirring according to the mass percentage, and stirring for 10-20 min to ensure that the solution is uniform, thus obtaining the environment-friendly normal-temperature degreasing agent.
Example 2
An environment-friendly normal-temperature degreasing agent comprises the following components in percentage by mass:
the preparation method of an environment-friendly normal-temperature degreasing agent in example 2 is the same as that of the environment-friendly normal-temperature degreasing agent in example 1.
Example 3
An environment-friendly normal-temperature degreasing agent comprises the following components in percentage by mass:
the preparation method of an environment-friendly normal-temperature degreasing agent in example 3 is the same as that of the environment-friendly normal-temperature degreasing agent in example 1.
Example 4
An environment-friendly normal-temperature degreasing agent comprises the following components in percentage by mass:
the preparation method of an environment-friendly normal-temperature degreasing agent in example 4 is the same as that of the environment-friendly normal-temperature degreasing agent in example 1.
The environment-friendly type normal temperature degreasing agents prepared in examples 1 to 4 of the present invention were used in the normal temperature degreasing agent cleaning section of the continuous annealing line of cold rolled steel sheet, respectively, using the commercial degreasing agents (liquid high alkalinity degreasing agent, model: HH TZY-030, mashan hong quill Utility Co., ltd., cleaning at 60 to 85 ℃) as comparative examples, and the surface cleaning indexes of the cleaned cold rolled steel sheet are shown in Table 1.
Table 1 cleaning index of cold rolled steel sheets in comparative example and examples 1 to 4
The experimental data shown in table 1 demonstrate that: compared with the cleaning effect of the degreasing agent sold in the market in the comparative example on the cold rolled steel sheet, the cold rolled steel sheet cleaned by the environment-friendly normal-temperature degreasing agent prepared in the examples 1 to 4 has excellent surface quality, the surface reflectivity is more than or equal to 96 percent, and the total residual oil and residual iron on the surface of the steel sheet is less than or equal to 8mg/m 2 The adhesion of the subsequent coating of the cleaned cold rolled steel sheet can reach 1 level, which indicates that the surface of the cold rolled steel sheet after being cleaned by the environment-friendly normal-temperature degreasing agent has high cleanliness, and the adhesion of the coating of the subsequent process also reaches the same level of cleaning by the high-temperature degreasing agent sold in the market; the cleaning temperature of the environment-friendly normal-temperature degreasing agent prepared in the embodiments 1-4 can be as low as 10-40 ℃, and the degreasing agent cleaning liquid does not need to be additionally heated, so that the working energy consumption of the continuous annealing production line of the cold rolled steel plate is obviously reduced; when the normal-temperature degreasing agents prepared in the embodiments 1 to 4 are used, the normal-temperature degreasing agents are not required to be mixed with other components, and defoaming agents are not required to be added, so that the cleaning operation steps are simple; the environment-friendly normal-temperature degreasing agent prepared in the examples 1-4 does not contain phosphorus, sulfur and silicon, is easy to biodegrade and has good environment-friendliness.
Among them, potassium hydroxide, tetrasodium glutamate diacetate, capstone FS-3100, AMA LF70, ethoquad C/12 and Genapol EP2454 are all commercially available products.
Conventional alkaline degreasing agents generally have saponification, emulsification and chelation, and remove grease from the surface of the metal parts by wetting, infiltration, rolling-off, dispersion and solubilization. The environment-friendly normal-temperature degreasing agent disclosed by the invention has the advantages that potassium hydroxide is used as a basic alkali source, a high-alkalinity environment is provided for preparing the degreasing agent, the saponification speed of potassium salt to grease is faster than that of sodium salt, the required saponification temperature is low, and the formed potassium soap has better water solubility; the Capstone FS-3100 has excellent wettability, so that the surface of the strip steel is permeated, and dirt is helped to be separated; the AMA LF70 surfactant is beneficial to clarifying the degreasing agent and increasing the cloud point of the nonionic surfactant in the cleaning working solution, so that the good emulsifying property of the nonionic surfactant is exerted; the Ethoquad C/12 surfactant can make the condition of an oil-water interface clear, effectively reduce the oil content of the dehydrated water and make oil and iron powder layered and settled; the Genapol EP2454 surfactant has good oil emulsifying effect at normal temperature, has foam inhibiting and defoaming effects, and can reduce foam amount generated by potassium soap in the cleaning process. The normal-temperature phosphorus-free rapid degreasing agent can be biodegraded, has good environmental protection, and has obvious synergistic effect through the cooperation of various active components on the performances of saponification, decontamination, emulsification, clean cleaning and the like.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (4)
1. The environment-friendly normal-temperature degreasing agent is characterized by comprising the following components in percentage by mass: 10 to 12 percent of potassium hydroxide, 1 to 3 percent of chelating agent, 0.5 to 1 percent of fluorocarbon surfactant, 1 to 2 percent of amphoteric surfactant, 0.2 to 0.8 percent of cationic quaternary ammonium salt surfactant, 1.2 to 1.5 percent of nonionic surfactant and the balance of water;
the chelating agent is tetrasodium glutamate diacetate, the fluorocarbon surfactant is of the model of Capstone FS-3100, the amphoteric surfactant is of the model of AMALF70 surfactant, the cationic quaternary ammonium salt surfactant is of the model of Ethoquad C/12, and the nonionic surfactant is of the model of Genapol EP2454.
2. The environment-friendly normal temperature degreasing agent as claimed in claim 1, wherein the water is pure water.
3. A method for preparing the environment-friendly normal-temperature degreasing agent as claimed in claim 2, which comprises the following steps:
s1: according to the mass percent of claim 2, adding potassium hydroxide into pure water under the condition of stirring at normal temperature, and uniformly stirring to obtain a primary premixed solution;
s2: when the primary premixed solution is cooled to 5-40 ℃, adding tetra sodium glutamate diacetate into the primary premixed solution prepared in the step S1 according to the mass percent of the claim 2, and uniformly stirring to obtain a secondary premixed solution;
s3: according to the mass percent of claim 2, capstone FS-3100, AMA LF70 and Ethoquad C/12 are sequentially added into the secondary premix solution prepared in the step S2, and the mixture is uniformly stirred to obtain a tertiary premix solution;
s4: and (3) when the three-time premixed solution is cooled to 5-35 ℃, adding Genapol EP2454 into the three-time premixed solution prepared in the step (S3) under the stirring state according to the mass percent of the preparation method of the claim 2, and uniformly stirring to obtain the environment-friendly normal-temperature degreasing agent.
4. The method for preparing environment-friendly normal temperature degreasing agent as claimed in claim 3, wherein in the step S2, the stirring time after the material is added is 10-30 min; in the step S3, the stirring time after the materials are added is 10-60 min; in the step S4, the stirring time after the materials are added is 10-20 min.
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