CN114570701A - Cleaning method of polyacrylate - Google Patents
Cleaning method of polyacrylate Download PDFInfo
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- CN114570701A CN114570701A CN202210267739.3A CN202210267739A CN114570701A CN 114570701 A CN114570701 A CN 114570701A CN 202210267739 A CN202210267739 A CN 202210267739A CN 114570701 A CN114570701 A CN 114570701A
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- Prior art keywords
- salt
- cleaning
- polyacrylate
- acid
- cleaning solution
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- 238000004140 cleaning Methods 0.000 title claims abstract description 92
- 229920000058 polyacrylate Polymers 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000243 solution Substances 0.000 claims abstract description 41
- -1 cation salt Chemical class 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 15
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 8
- 150000001768 cations Chemical class 0.000 claims description 7
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 6
- OUDSFQBUEBFSPS-UHFFFAOYSA-N ethylenediaminetriacetic acid Chemical compound OC(=O)CNCCN(CC(O)=O)CC(O)=O OUDSFQBUEBFSPS-UHFFFAOYSA-N 0.000 claims description 5
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 159000000007 calcium salts Chemical class 0.000 claims description 3
- 159000000003 magnesium salts Chemical class 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 3
- 229940071103 sulfosalicylate Drugs 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical class COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- WXHLLJAMBQLULT-UHFFFAOYSA-N 2-[[6-[4-(2-hydroxyethyl)piperazin-1-yl]-2-methylpyrimidin-4-yl]amino]-n-(2-methyl-6-sulfanylphenyl)-1,3-thiazole-5-carboxamide;hydrate Chemical compound O.C=1C(N2CCN(CCO)CC2)=NC(C)=NC=1NC(S1)=NC=C1C(=O)NC1=C(C)C=CC=C1S WXHLLJAMBQLULT-UHFFFAOYSA-N 0.000 claims description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 150000001450 anions Chemical class 0.000 claims description 2
- 150000001462 antimony Chemical class 0.000 claims description 2
- XRURWBKRKZLENR-UHFFFAOYSA-N azane;ethane-1,2-diol Chemical compound N.OCCO XRURWBKRKZLENR-UHFFFAOYSA-N 0.000 claims description 2
- 159000000009 barium salts Chemical class 0.000 claims description 2
- 150000001621 bismuth Chemical class 0.000 claims description 2
- 150000001661 cadmium Chemical class 0.000 claims description 2
- 150000001844 chromium Chemical class 0.000 claims description 2
- 150000001868 cobalt Chemical class 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims description 2
- 150000001879 copper Chemical class 0.000 claims description 2
- 150000002258 gallium Chemical class 0.000 claims description 2
- 150000002290 germanium Chemical class 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 150000002471 indium Chemical class 0.000 claims description 2
- 150000002505 iron Chemical class 0.000 claims description 2
- 150000002696 manganese Chemical class 0.000 claims description 2
- 150000002730 mercury Chemical class 0.000 claims description 2
- 150000002751 molybdenum Chemical class 0.000 claims description 2
- 150000002815 nickel Chemical class 0.000 claims description 2
- 150000002821 niobium Chemical class 0.000 claims description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-M oxalate(1-) Chemical compound OC(=O)C([O-])=O MUBZPKHOEPUJKR-UHFFFAOYSA-M 0.000 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- 229960001860 salicylate Drugs 0.000 claims description 2
- 229960004889 salicylic acid Drugs 0.000 claims description 2
- MOODSJOROWROTO-UHFFFAOYSA-N salicylsulfuric acid Chemical compound OC(=O)C1=CC=CC=C1OS(O)(=O)=O MOODSJOROWROTO-UHFFFAOYSA-N 0.000 claims description 2
- 150000003325 scandium Chemical class 0.000 claims description 2
- 159000000008 strontium salts Chemical class 0.000 claims description 2
- 150000003475 thallium Chemical class 0.000 claims description 2
- 150000003608 titanium Chemical class 0.000 claims description 2
- MBYLVOKEDDQJDY-UHFFFAOYSA-N tris(2-aminoethyl)amine Chemical compound NCCN(CCN)CCN MBYLVOKEDDQJDY-UHFFFAOYSA-N 0.000 claims description 2
- 150000003681 vanadium Chemical class 0.000 claims description 2
- 150000003746 yttrium Chemical class 0.000 claims description 2
- 150000003751 zinc Chemical class 0.000 claims description 2
- 150000003754 zirconium Chemical class 0.000 claims description 2
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical class [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 238000002791 soaking Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 10
- 229910052749 magnesium Inorganic materials 0.000 description 10
- 239000011777 magnesium Substances 0.000 description 10
- 238000005406 washing Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 4
- DWLAVVBOGOXHNH-UHFFFAOYSA-L magnesium;prop-2-enoate Chemical compound [Mg+2].[O-]C(=O)C=C.[O-]C(=O)C=C DWLAVVBOGOXHNH-UHFFFAOYSA-L 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-L Oxalate Chemical compound [O-]C(=O)C([O-])=O MUBZPKHOEPUJKR-UHFFFAOYSA-L 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940006460 bromide ion Drugs 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-M dihydrogenphosphate Chemical compound OP(O)([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-M 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/048—Overflow-type cleaning, e.g. tanks in which the liquid flows over the tank in which the articles are placed
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
- C11D7/12—Carbonates bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/265—Carboxylic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3245—Aminoacids
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- General Chemical & Material Sciences (AREA)
- Detergent Compositions (AREA)
Abstract
The invention relates to the technical field of industrial cleaning, and particularly discloses a cleaning method of polyacrylate. The cleaning method comprises the following steps: and cleaning the polyacrylate by using a cleaning solution, wherein the cleaning solution contains a monovalent cation salt and/or a compound with a coordination effect. The cleaning method provided by the invention can well dissolve or decompose polyacrylate, meanwhile, the cleaning solution adopted in the whole cleaning process is an aqueous solution, no volatile substance is generated, no toxic and harmful organic solvent or strong acid and strong base is involved, the cleaning method is environment-friendly and human-friendly, the cleaning mode is convenient and simple, the defects of the prior art are overcome, and the efficient environment-friendly cleaning of polyacrylate polymers is realized.
Description
Technical Field
The invention relates to the technical field of industrial cleaning, in particular to a cleaning method of polyacrylate.
Background
The polyacrylate is a high molecular polymer taking acrylate as a monomer, the main chain of the polyacrylate is the same as polyacrylic acid, but the side chain of the polyacrylate is a carboxylic acid cation salt. Most of the polyacrylates have the advantages of high modulus, high rigidity, good heat resistance and insulation and the like, and are widely applied to the fields of electronics, machinery, building engineering and the like. In the field of building engineering, acrylate is polymerized into a water-insoluble polyacrylate gel polymer (acrylate chemical grouting material) under a certain initiator, so that the effects of seepage prevention and leakage stoppage can be realized.
However, although polyacrylate has been used in many fields, its efficient and environmentally friendly cleaning agent has been studied. Taking a magnesium polyacrylate material used in the field of constructional engineering as an example, the polymer is insoluble in water and has good adhesion after being sprayed and formed into a film, at present, the waste is mainly cleaned by scraping by manpower or cleaning by using strong acid, strong base, special organic solvent with environmental hazard and the like, but the former needs a large amount of manpower and time, and the latter does not meet the requirement of environmental protection.
Therefore, there is a need to provide a cleaning method for polyacrylate, which makes the cleaning process more efficient and environmentally friendly.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a method for cleaning polyacrylate, which can well dissolve or decompose polyacrylate, does not involve the use of toxic and harmful organic solvents or strong acid and strong base in the whole cleaning process, overcomes the defects of the prior art, and realizes efficient and environment-friendly cleaning of polyacrylate.
Meanwhile, the invention also provides an application of the cleaning method of the polyacrylate.
The invention relates to the following technical scheme:
the first aspect of the invention provides a method for cleaning polyacrylate, which comprises the following steps:
and cleaning the polyacrylate by using a cleaning solution, wherein the cleaning solution contains a monovalent cation salt and/or a compound with a coordination effect.
The cleaning solution containing the monovalent cation salt and/or the compound with the coordination function is used for cleaning the polyacrylate, the cleaning solution is found to have good dissolution or decomposition effect on the polyacrylate, and the cleaning solution can be prepared into an aqueous solution, is free of volatile substances, and is environment-friendly and human-friendly.
In some embodiments of the invention, the monovalent cation salt comprises a water soluble salt of any one or more of the following monovalent cations: na (Na)+，K+，NH4 +，Li+，Rb+，Cs+，Cu+，Ag+(ii) a A water soluble salt comprising any one or more of the following monovalent cations: preferably Na+，K+，NH4 +。
In the present invention, "monovalent cation" means an atom or an atomic group which has lost one electron and has a positive valence.
In some embodiments of the invention, the monovalent cation salt comprises any one or more of the following anions having a coordinating action: chloride, fluoride, bromide, hydroxide, nitrate, sulfate, bisulfate, carbonate, bicarbonate, phosphate, monohydrogen phosphate, dihydrogen phosphate, oxalate, hydrogen oxalate, salicylate, sulfosalicylate, nitrilotriacetate, monohydrogen nitrilotriacetate, dihydronitrilotriacetate, ethylenediaminetriacetate, monohydrogen ethylenediaminetriacetate, dihydrogentriacetate, ethylenediaminetetraacetate, monohydrogen ethylenediaminetetraacetate, dihydrogenate, ethylenediaminetetraacetate; preferably, the metal salt includes one or more of chloride ion, fluoride ion, bromide ion, nitrate ion, sulfate ion, bisulfate ion, carbonate ion, bicarbonate ion, oxalate ion, salicylate ion, sulfosalicylate ion, ethylenediaminetetraacetate ion, ethylenediaminetetraacetic acid monohydrogen ion, ethylenediaminetetraacetic acid dihydrogen ion, ethylenediaminetetraacetic acid trihydrogen ion.
In the present invention, "coordination" means binding by a central atom (or ion, collectively referred to as central atom) and a molecule or ion (referred to as ligand/ligand) surrounding it, wholly or partially, via a coordination bond.
In some embodiments of the invention, the coordinating compound comprises any one or more of the following compounds: ethylenediamine, NH3Ethylene glycol, triethanolamine, salicylaldehyde, salicylic acid, sulfosalicylic acid, nitrilotriacetic acid, tris (2-aminoethyl) amine, ethylenediaminetriacetic acid, ethylenediaminetetraacetic acid.
In some embodiments of the present invention, the total mass percentage of the monovalent cation salt and/or the compound having a coordinating action in the cleaning solution is 0.001% to 50%, preferably 0.01% to 50%, more preferably 0.1% to 50%, still more preferably 0.5% to 50%, further preferably 1% to 50%, further more preferably 5% to 40%, still further preferably 5% to 30%, and still further more preferably 10% to 30%.
In some examples of the invention, the cleaning solution comprises a solvent, and the solvent is water.
In some embodiments of the invention, the polyacrylate salt comprises a polymer of any one or more of the following metal salts of acrylic acid: magnesium salt, calcium salt, aluminum salt, strontium salt, barium salt, scandium salt, yttrium salt, titanium salt, zirconium salt, vanadium salt, niobium salt, chromium salt, molybdenum salt, manganese salt, iron salt, cobalt salt, nickel salt, copper salt, zinc salt, cadmium salt, mercury salt, gallium salt, indium salt, thallium salt, germanium salt, tin salt, lead salt, antimony salt and bismuth salt, and the magnesium salt, the calcium salt and the aluminum salt are preferred.
In some embodiments of the present invention, the cleaning solution is used to clean the polyacrylate at a temperature of 0 to 100 ℃, preferably 10 to 80 ℃, and more preferably 20 to 50 ℃.
In some embodiments of the present invention, the specific operations for cleaning the polyacrylate salt with the cleaning solution are as follows: and soaking the part to be cleaned, which is adhered with the polyacrylate, in the cleaning solution.
In some examples of the invention, the soaking time of the member to be cleaned, to which the polyacrylate is adhered, in the cleaning solution can be adjusted according to the degree of decomposition or dissolution of the polyacrylate, and when the concentration and/or the soaking temperature of the cleaning solution is lower, the soaking time can be prolonged appropriately, and when the concentration and/or the soaking temperature of the cleaning solution is higher, the soaking time can be shortened appropriately. As an example, the soaking time is 1 hour or more, preferably 6 hours or more, and more preferably 12 hours or more.
In some embodiments of the present invention, the step of cleaning the polyacrylate with the cleaning solution may be assisted by one or both of sonication and stirring.
In some embodiments of the present invention, the cleaning of the polyacrylate salt with the cleaning solution further comprises: and washing with water.
In some examples of the present invention, the temperature of the water in the washing step is 0 to 100 ℃, preferably 10 to 100 ℃, more preferably 20 to 100 ℃, still more preferably 60 to 100 ℃, and further preferably 60 to 80 ℃.
In some embodiments of the invention, the time for rinsing with water may be adjusted depending on the degree to which the polyacrylate is removed. As an example, the washing with water is carried out for a period of time of 0.5 hours or more, preferably 1 hour or more, more preferably 2 hours or more, still more preferably 6 hours or more.
In some embodiments of the present invention, the washing step with water is performed by one or both of the following (1) and (2): (1) soaking with static water, and (2) washing with flowing water.
The second aspect of the present invention provides the use of the above-mentioned polyacrylate salt cleaning method for cleaning electronic devices, mechanical devices or construction engineering facilities.
Compared with the prior art, the invention has the following beneficial effects:
the cleaning method provided by the invention can well dissolve or decompose polyacrylate, meanwhile, the cleaning solution adopted in the whole cleaning process is an aqueous solution, no volatile substance is contained, no toxic and harmful organic solvent or strong acid and strong base is involved, the cleaning method is environment-friendly and human-friendly, the cleaning mode is convenient and simple, the defects of the prior art are overcome, and the efficient and environment-friendly cleaning of polyacrylate polymers is realized.
Detailed Description
The technical solution of the present invention is further described below with reference to specific examples. The starting materials used in the following examples, unless otherwise specified, are available from conventional commercial sources; the processes used, unless otherwise specified, are conventional in the art. Hereinafter, unless otherwise specified, room temperature means 25. + -. 5 ℃.
Examples 1 to 15 and comparative examples 1 to 3
The cleaning solution is obtained by uniformly mixing and dissolving the components according to the composition shown in the following table 1.
Reacting magnesium acrylate according to GB/T16777-2008 to prepare a magnesium acrylate test piece with the thickness of 1cm and the length and width of 13cm multiplied by 4cm, soaking the magnesium acrylate test piece in a cleaning solution for 12 hours, then placing the magnesium acrylate test piece in the cleaning solution to wash for 6 hours, and then carrying out performance test on the test piece, wherein the test results are shown in Table 2, the tensile strength in the table is tested according to the method specified in GB/T16777-2008 by 9.2.1, and the properties of the test piece are obtained by visual inspection.
TABLE 1 cleaning solution composition (parts by weight) of examples 1 to 15 and comparative examples 1 to 3
TABLE 2 tensile Strength and shape of test pieces of examples 1 to 15 and comparative examples 1 to 3
| Tensile Strength (MPa) | Test piece property | |
| Example 1 | 0.05 | Volume expansion |
| Example 2 | 0.02 | Volume expansion |
| Example 3 | 0.01 | Volume expansion |
| Example 4 | 0.02 | Volume expansion |
| Example 5 | 0.02 | Volume expanding, viscous gel |
| Example 6 | 0 | Volume expanding, viscous gel |
| Example 7 | 0 | Volume expanding, viscous gel |
| Example 8 | 0 | Volume expanding, viscous gel |
| Example 9 | 0 | Volume expanded, viscous gel |
| Example 10 | 0 | Volume expanding, viscous gel |
| Example 11 | 0 | Volume expanding, viscous gel |
| Example 12 | 0 | Volume expanded, viscous gel |
| Example 13 | 0 | Volume expanding, viscous gel |
| Example 14 | 0 | Volume expanded, viscous gel |
| Example 15 | 0 | Volume expanding, viscous gel |
| Comparative example 1 | 2.10 | Without change |
| Comparative example 2 | 2.42 | Without change |
| Comparison ofExample 3 | 2.35 | Without change |
Examples 16 to 18 and comparative examples 4 to 5
The cleaning solution is obtained by uniformly mixing and dissolving the components according to the composition shown in the following table 3.
TABLE 3 cleaning solution composition (in parts by weight) for examples 16 to 18 and comparative examples 4 to 5
The magnesium polyacrylate test pieces were treated and then tested for performance as follows, with the results shown in Table 4.
Example 16
Step one, soaking a test piece in a cleaning solution for 12 hours at room temperature;
soaking the test piece in clean water at room temperature for 6 hours;
and step three, cleaning the residues of the magnesium polyacrylate from the test piece.
Example 17
Step one, soaking a test piece in a cleaning solution for 6 hours at room temperature;
step two, soaking the test piece in clear water at 80 ℃ for 1 hour;
and step three, cleaning the residues of the magnesium polyacrylate from the test piece.
Example 18
Step one, soaking a test piece in a cleaning solution for 6 hours at room temperature;
secondly, washing the test piece with clean water at room temperature for 1 hour;
and step three, cleaning the residues of the magnesium polyacrylate from the test piece.
Comparative example 4
Step one, soaking a test piece in a cleaning solution for 12 hours at room temperature;
soaking the test piece in clear water at 80 ℃ for 6 hours;
and step three, cleaning the residue of the polyacrylate magnesium from the test piece.
Comparative example 5
Step one, soaking a to-be-tested piece in a specific cleaning solution for 0.5 hour;
soaking the piece to be tested in clear water at 80 ℃ for 10 minutes;
and step three, cleaning the residues of the magnesium polyacrylate from the test piece.
TABLE 4 tensile Strength and shape of test pieces of examples 16 to 18 and comparative examples 4 to 5
As can be seen from table 2 and table 4 above, after the magnesium polyacrylate test piece is soaked and cleaned by the cleaning solution comprising the univalent cations and/or the compounds (or ions) having coordination function in examples 1 to 18, the tensile strength of the magnesium polyacrylate test piece is greatly reduced, while the magnesium polyacrylate test piece treated by water or divalent cation solution in comparative examples 1 to 5 still maintains stronger tensile strength, which indicates that the cleaning solutions in examples 1 to 18 have good dissolution and decomposition effects on polyacrylate. Meanwhile, the polymer appearance is obviously changed after being soaked in the cleaning solution of the embodiment 1-18, the polymer has different volume expansion degrees, part of the polymer is still in a sticky colloid shape, and part of the polymer loses viscosity. In addition, the cleaning speed of the polyacrylate can be accelerated by changing and adjusting the temperature and the time in the cleaning process. These changes in properties all demonstrate that the cleaning solutions of examples 1-18 can effectively clean polyacrylate.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A method for cleaning polyacrylate, which is characterized by comprising the following steps: the method comprises the following steps:
and cleaning the polyacrylate by using a cleaning solution, wherein the cleaning solution contains a monovalent cation salt and/or a compound with a coordination effect.
2. The method for cleaning polyacrylate according to claim 1, wherein: the monovalent cation salt includes a water soluble salt of any one or more of the following monovalent cations: na (Na)+，K+，NH4 +，Li+，Rb+，Cs+，Cu+，Ag+。
3. The method for cleaning polyacrylate according to claim 2, wherein: the monovalent cation salt includes a water soluble salt of any one or more of the following monovalent cations: na (Na)+，K+，NH4 +。
4. A method for cleaning polyacrylate according to any one of claims 1 to 3, wherein: the monovalent cation salt contains any one or more of the following anions with coordination: chloride, fluoride, bromide, hydroxide, nitrate, sulfate, bisulfate, carbonate, bicarbonate, phosphate, dihydrogen oxalate, hydrogen oxalate, salicylate, sulfosalicylate, nitrilotriacetate, monohydrogen nitrilotriacetate, dihydronitrilotriacetate, ethylenediaminetriacetic acid, monohydrogen ethylenediaminetriacetic acid, dihydrogenethylenediaminetriacetic acid, ethylenediaminetetraacetic acid, dihydrogenedetic acid, ethylenediaminetetraacetic acid.
5. The method for cleaning polyacrylate according to claim 1, wherein: the compound having coordination includes any one or more of the following compounds: ethylenediamine, NH3Ethylene glycol, triethanolamine, salicylaldehyde, salicylic acid, sulfosalicylic acid, nitrilotriacetic acid, tris (2-aminoethyl) amine, ethylenediaminetriacetic acid, ethylenediaminetetraacetic acid.
6. The method for cleaning polyacrylate according to claim 1, wherein: the univalent cation salt and/or the compound with coordination action accounts for 0.001 to 50 percent of the total mass percentage of the cleaning solution.
7. The method of claim 6, wherein: the total mass percentage of the univalent cation salt and/or the compound with coordination in the cleaning solution is 0.01-50%.
8. The method for cleaning polyacrylate according to claim 1, wherein: the polyacrylate salt comprises a polymer of any one or more of the following metal salts of acrylic acid: magnesium salt, calcium salt, aluminum salt, strontium salt, barium salt, scandium salt, yttrium salt, titanium salt, zirconium salt, vanadium salt, niobium salt, chromium salt, molybdenum salt, manganese salt, iron salt, cobalt salt, nickel salt, copper salt, zinc salt, cadmium salt, mercury salt, gallium salt, indium salt, thallium salt, germanium salt, tin salt, lead salt, antimony salt and bismuth salt.
9. The method for cleaning polyacrylate according to claim 1, wherein: the cleaning temperature of the cleaning solution for cleaning the polyacrylate is 0-100 ℃.
10. Use of a polyacrylate salt cleaning process according to any one of claims 1 to 9 for cleaning electronic devices, mechanical devices or construction engineering facilities.
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