CN116731591A - Single-component epoxy resin repairing agent - Google Patents
Single-component epoxy resin repairing agent Download PDFInfo
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- CN116731591A CN116731591A CN202310607025.7A CN202310607025A CN116731591A CN 116731591 A CN116731591 A CN 116731591A CN 202310607025 A CN202310607025 A CN 202310607025A CN 116731591 A CN116731591 A CN 116731591A
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- epoxy resin
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- repair agent
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 59
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 229920000459 Nitrile rubber Polymers 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- 239000012745 toughening agent Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004593 Epoxy Substances 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 8
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 8
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 7
- 239000003085 diluting agent Substances 0.000 claims abstract description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 18
- 239000004753 textile Substances 0.000 claims description 18
- 239000002699 waste material Substances 0.000 claims description 18
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- 239000011325 microbead Substances 0.000 claims description 15
- 230000008439 repair process Effects 0.000 claims description 14
- 239000004814 polyurethane Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 claims description 8
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 7
- 239000011258 core-shell material Substances 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 238000000280 densification Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910021418 black silicon Inorganic materials 0.000 description 10
- 239000002002 slurry Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000004721 Polyphenylene oxide Substances 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229920000570 polyether Polymers 0.000 description 6
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 4
- RQZUWSJHFBOFPI-UHFFFAOYSA-N 2-[1-[1-(oxiran-2-ylmethoxy)propan-2-yloxy]propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COC(C)COCC1CO1 RQZUWSJHFBOFPI-UHFFFAOYSA-N 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 3
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
- C08G59/4014—Nitrogen containing compounds
- C08G59/4021—Ureas; Thioureas; Guanidines; Dicyandiamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/56—Amines together with other curing agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a single-component epoxy resin repairing agent which is prepared by compounding, by weight, 10-45 parts of a resin mixed component, 1.51-9 parts of a fiber component, 1-3 parts of epoxy nitrile rubber, 1-5 parts of a core-shell-shaped organosilicon modified epoxy resin toughening agent, 0.01-0.05 part of graphene, 35-75 parts of a wear-resistant filler component, 1.2-8 parts of a curing agent, 2-6 parts of an active diluent and 0.1-1 part of an adhesion promoter. The single-component epoxy resin repairing agent provided by the invention can form a wear-resistant layer on the surface of a workpiece to be repaired, so that the workpiece to be repaired can be put into production and used again, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of resin repair, in particular to a single-component epoxy resin repair agent, and more particularly relates to a single-component epoxy resin repair agent for a slurry pump.
Background
The slurry pump is widely applied to industries such as mines, electric power, metallurgy, environmental protection and the like, and the conveyed medium is slurry containing abrasive solid particles or a large amount of acidic substances. Because of the conveying medium, the part of the slurry pump passing through the flow part is subjected to erosion and abrasion of hard particle particles in high-speed slurry and chemical corrosion of acid slurry, so that the slurry pump is disabled due to serious abrasion.
In order to reduce the equipment replacement cost and meet the development trend of energy conservation and environmental protection, the slurry pump before use needs to be repaired. The common wear-resistant repairing material in industry is prepared from thermosetting polymer base materials such as epoxy resin, phenolic resin and the like and wear-resistant particles such as alumina, silicon carbide and the like according to a certain proportion and a process, is easy to construct and low in cost, but has the defects of poor impact resistance, low adhesive force and the like, and can fail under the high erosion and wear working conditions of a slurry pump, such as brittle fracture and falling of a wear-resistant coating, falling of wear-resistant ceramic balls, falling of silicon carbide particles and the like, so that the requirement of users on the wear-resistant performance of the material can not be met.
In view of the foregoing, there is a great need for a one-component epoxy resin repair agent to solve the problems of the prior art.
Disclosure of Invention
The invention aims to provide a single-component epoxy resin repairing agent, which has the following specific technical scheme:
the single-component epoxy resin repairing agent is prepared by compounding, by weight, 10-45 parts of resin mixed components, 1.51-9 parts of fiber components, 1-3 parts of epoxy nitrile rubber, 1-5 parts of core-shell organic silicon modified epoxy resin toughening agent, 0.01-0.05 part of graphene, 35-75 parts of wear-resistant filler components, 1.2-8 parts of curing agent, 2-6 parts of active diluent and 0.1-1 part of adhesion promoter.
Optionally, the resin blend component includes bisphenol a type epoxy resin and polyurethane modified epoxy resin.
Optionally, the bisphenol a epoxy resin is one or more of E44, E51, 128, 127; the polyurethane modified epoxy resin is solvent-free.
Optionally, the fiber component comprises broken short fibers, whiskers and carbon fiber powder of waste recycled textiles.
Optionally, the waste recycled textile broken short fiber is obtained by breaking waste textile, selecting short fiber with length of 0.5-3 mm, and performing surface treatment and densification treatment on the short fiber by using a silane coupling agent (KH 550 or KH 560).
Optionally, the adhesion promoter comprises 2-mercaptobenzothiazole.
Optionally, the wear-resistant filler component includes one or more of alumina ceramic microbeads, silicon carbide, and ultrafine aluminum silicate.
Optionally, the diameter dimension of the alumina ceramic microbeads comprises 0.1-0.5 mm and 1-2 mm;
the specification of the silicon carbide is one or more of 40 meshes, 120 meshes, 325 meshes and 800 meshes.
Optionally, the curing agent comprises dicyandiamide.
Optionally, the curing agent further comprises one or more of 2-ethyl-4-methylimidazole and T-5000 polyetheramine.
The technical scheme of the invention has the following beneficial effects:
(1) The single-component epoxy resin repairing agent provided by the invention can form a wear-resistant layer on the surface of a workpiece to be repaired, so that the workpiece to be repaired can be put into production and used again, and the production cost is reduced. The method is characterized in that the impact toughness of the repair layer is improved and brittle fracture failure is avoided through the synergistic effect of the resin mixed component, the fiber component and the epoxy-terminated nitrile rubber, firstly, the surface toughness of the wear-resistant layer is improved through the cross-linking reaction of the resin mixed component and the epoxy-terminated nitrile rubber, then the tensile shear strength is further improved through the fiber component, and finally, the adhesive strength between the single-component epoxy resin repair agent and the surface of a workpiece after being coated is improved through adding the core-shell organosilicon modified epoxy resin toughening agent, graphene, the wear-resistant filler component, the curing agent, the reactive diluent and the adhesion promoter.
(2) The epoxy resin matrix with good toughness, namely the polyurethane modified epoxy resin, is selected and the epoxy terminated nitrile rubber is selected, so that compared with the traditional reaction of the resin matrix and the carboxyl terminated nitrile rubber toughening agent, the process link of pre-reacting the epoxy resin and the carboxyl terminated nitrile rubber is avoided. The principle is that the epoxy-terminated nitrile rubber can generate crosslinking reaction with curing agent (dicyandiamide, 2-ethyl-4-methylimidazole and T-5000 polyether amine) together with epoxy resin in the curing process due to the active epoxy group of the molecular chain, so that the toughness is effectively improved.
(3) The waste recycled textile broken short fiber added in the invention is obtained by crushing the waste textile, selecting the short fiber with the length of 0.5-3 mm, and then carrying out surface treatment and densification treatment on the short fiber by a silane coupling agent, so that the toughness can be effectively improved. The principle of the method is that as the waste textiles undergo long-term use and recovery processes, the surface of the fibers is high in roughness degree due to abrasion, compared with other organic fibers such as aramid fibers, polypropylene fibers and the like, the waste textiles have stronger binding force with a resin matrix, compared with inorganic fibers such as short glass fibers, ceramic fibers and the like, the method has flexibility, and the waste textiles are further treated, so that the crushing degree and the surface binding force of the waste textiles are improved.
(4) According to the invention, dicyandiamide, 2-ethyl-4-methylimidazole and T-5000 polyether amine are selected as curing agents, so that the adhesive force of the wear-resistant layer on the surface of a metal material is improved, and the detachment failure of the wear-resistant layer caused by erosive wear is avoided. The curing agent selected by the invention is a single component, so that the on-site preparation process of a double-component formula in the prior art is avoided, and the construction operation is easy.
(5) The invention adds 2-mercaptobenzothiazole as an adhesion promoter, improves the content of atoms such as sulfur, nitrogen, oxygen and the like in the single-component epoxy resin repairing agent, and can improve the adhesion of the repairing agent to metal materials. And the 2-mercaptobenzothiazole added in the invention can also play a role in accelerating the curing speed of the repairing agent.
(6) According to the invention, the alumina ceramic microbeads and the silicon carbide particles with different sizes are graded as the wear-resistant filler components, so that a proper stacking structure can be obtained, and the resin components among the wear-resistant filler components are protected from being influenced by erosive wear as little as possible by the shadow effect of the wear-resistant filler components, thereby improving the overall wear resistance.
In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail below.
Detailed Description
The present invention will be described more fully hereinafter in order to facilitate an understanding of the present invention, and preferred embodiments of the present invention are set forth. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1:
a single-component epoxy resin repairing agent is prepared by compounding 9 parts by weight of bisphenol A epoxy resin (E51), 6 parts by weight of bisphenol A epoxy resin (E44), 5 parts by weight of polyurethane modified epoxy resin, 0.05 part by weight of waste recycled textile broken short fiber of 0.5-3 mm, 1 part by weight of epoxy nitrile rubber, 5 parts by weight of core-shell organosilicon modified epoxy resin toughening agent (condensation type organosilicon core-shell epoxy resin toughening agent in the embodiment, as the outer layer of the core-shell epoxy resin toughening agent is provided with epoxy groups, the organosilicon elastomer is indirectly combined into a solidified object through chemical bonds, the toughness is effectively improved), 1 part by weight of whisker (in the embodiment, the whisker is calcium sulfate whisker, in other embodiments, the whiskers are one or more of calcium sulfate whiskers, potassium titanate whiskers, and calcium carbonate whiskers, 4 parts of 100 mesh carbon fiber powder, 0.01 part of graphene, 37.64 parts of 1mm alumina ceramic microbeads, 12 parts of 0.5mm alumina ceramic microbeads, 12 parts of silicon carbide (in this embodiment, including 9 parts of 40 mesh black silicon carbide, 3 parts of 120 mesh black silicon carbide), 2 parts of ultrafine aluminum silicate (the fineness of the ultrafine aluminum silicate is between 325 and 2000 mesh), 2 parts of dicyandiamide, 0.1 part of 2-ethyl-4-methylimidazole, 0.1 part of T-5000 polyether amine, 2 parts of trimethylolpropane glycidyl ether, 1 part of dipropylene glycol diglycidyl ether, and 0.1 part of 2-mercaptobenzothiazole.
Example 2:
the single-component epoxy resin repairing agent is prepared by compounding, by weight, 5 parts of 127 epoxy resins, 30 parts of polyurethane modified epoxy resins, 1 part of waste recycled textile broken short fibers with the diameter of 0.5-3 mm, 1 part of epoxy nitrile rubber, 1 part of core-shell-shaped organic silicon modified epoxy resin toughening agents, 2 parts of potassium titanate whiskers, 0.5 part of 100-mesh carbon fiber powder, 0.05 part of graphene, 26.45 parts of 1-mm alumina ceramic microbeads, 9 parts of 0.5-mm alumina ceramic microbeads, 6 parts of 325-mesh black silicon carbide, 2 parts of 800-mesh black silicon carbide, 1 part of superfine aluminum silicate, 5 parts of dicyandiamide, 1 part of 2-ethyl-4-methylimidazole, 2 parts of T-5000 polyether amine, 5 parts of dipropylene glycol diglycidyl ether, 1 part of polypropylene glycol diglycidyl ether and 1 part of 2-mercaptobenzothiazole.
Example 3:
the single-component epoxy resin repairing agent is prepared by compounding, by weight, 6 parts of 128 epoxy resin, 3 parts of E44 epoxy resin, 20 parts of polyurethane modified epoxy resin, 0.08 part of waste recycled textile broken short fiber of 0.5-3 mm, 3 parts of epoxy nitrile rubber, 2 parts of core-shell organic silicon modified epoxy resin toughening agent, 3 parts of calcium carbonate whisker, 2 parts of 100-mesh carbon fiber powder, 0.02 part of graphene, 22.7 parts of 1-mm alumina ceramic microbeads, 10 parts of 0.5-mm alumina ceramic microbeads, 9 parts of 40-mesh black silicon carbide, 6 parts of 120-mesh black silicon carbide, 5 parts of superfine aluminum silicate, 2 parts of dicyandiamide, 0.5 part of 2-ethyl-4-methylimidazole, 0.5 part of T-5000 polyether amine, 3 parts of trimethylolpropane glycidyl ether, 2 parts of ethylene glycol diglycidyl ether and 0.2 parts of 2-mercaptobenzothiazole.
Example 4:
the single-component epoxy resin repairing agent is prepared by compounding, by weight, 4 parts of 127 epoxy resins, 1 part of E44 epoxy resins, 15 parts of polyurethane modified epoxy resins, 0.05 part of waste recycled textile broken short fibers with the thickness of 0.5-3 mm, 1 part of epoxy-terminated nitrile rubber, 2 parts of core-shell-shaped organosilicon modified epoxy resin toughening agents, 2 parts of potassium titanate whiskers, 1 part of calcium sulfate whiskers, 2 parts of 300-mesh carbon fiber powder, 0.05 part of graphene, 42.9 parts of 1-mm alumina ceramic microbeads, 15 parts of 0.5-mm alumina ceramic microbeads, 6 parts of 40-mesh black silicon carbide, 2 parts of 120-mesh black silicon carbide, 1 part of superfine aluminum silicate, 2 parts of dicyandiamide, 0.2 part of 2-ethyl-4-methylimidazole, 0.5 part of T-5000 polyether amine, 1 part of dipropylene glycol diglycidyl ether, 1 part of polypropylene glycol diglycidyl ether and 0.3 part of 2-mercaptobenzothiazole.
Comparative example 1:
a single-component epoxy resin repairing agent is prepared by compounding the following raw materials in parts by weight, and comprises a component A and a component B.
The component A is prepared from the following raw materials in percentage by weight: 18 parts of E51 epoxy resin, 6 parts of E44 epoxy resin, 2 parts of carboxyl terminated nitrile rubber, 4 parts of trimethylolpropane glycidyl ether, 30 parts of 1mm alumina ceramic microbeads, 15 parts of 0.5mm alumina ceramic microbeads, 15 parts of 120-mesh black silicon carbide, 5 parts of 325-mesh black silicon carbide and 5 parts of superfine white carbon black.
The component B is prepared from the following raw materials in percentage by weight: 50 parts of T-31 phenolic aldehyde amine curing agent, 40 parts of 650 polyamide curing agent and 10 parts of DMP-30 accelerator.
When in use, the component A and the component B10: 1 weight ratio was used after mixing.
The one-component epoxy resin restoratives obtained from examples 1-4 and comparative example 1 were subjected to performance testing, as detailed in Table 1.
Table 1 comparison of the results of the Performance test of examples 1-4 with comparative example 1
According to the data in Table 1, compared with the method in comparative example 1 in which no waste recycled textile broken short fiber of 0.5-3 mm is used, the single-component epoxy resin repairing agent provided in examples 1-4 in combination with the waste recycled textile broken short fiber of 0.5-3 mm can remarkably improve the unnotched impact strength and the tensile shear strength.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The single-component epoxy resin repairing agent is characterized by being prepared by compounding, by weight, 10-45 parts of resin mixed components, 1.51-9 parts of fiber components, 1-3 parts of epoxy nitrile rubber, 1-5 parts of core-shell organic silicon modified epoxy resin toughening agents, 0.01-0.05 part of graphene, 35-75 parts of wear-resistant filler components, 1.2-8 parts of curing agents, 2-6 parts of active diluents and 0.1-1 part of adhesion promoters.
2. The one-component epoxy resin repair agent according to claim 1, wherein the resin mixture component comprises bisphenol a type epoxy resin and polyurethane modified epoxy resin.
3. The one-component epoxy resin repair agent according to claim 2, wherein the bisphenol a type epoxy resin is one or more of E44, E51, 128, 127; the polyurethane modified epoxy resin is solvent-free.
4. The one-component epoxy resin repair agent of claim 1, wherein the fiber component comprises broken short fibers, whiskers and carbon fiber powder of waste recycled textiles.
5. The one-component epoxy resin restoration agent according to claim 4, wherein the waste recycled textile broken short fibers are obtained by breaking waste textiles, selecting short fibers with the length of 0.5-3 mm, and then subjecting the short fibers to surface treatment and densification treatment by a silane coupling agent.
6. The one-part epoxy resin repair agent according to claim 1, wherein the adhesion promoter comprises 2-mercaptobenzothiazole.
7. The one-part epoxy repair agent of claim 1, wherein the wear-resistant filler component comprises one or more of alumina ceramic microbeads, silicon carbide, and ultrafine aluminum silicate.
8. The one-component epoxy resin repair agent according to claim 7, wherein the diameter dimension specification of the alumina ceramic microbeads comprises 0.1-0.5 mm and 1-2 mm;
the specification of the silicon carbide is one or more of 40 meshes, 120 meshes, 325 meshes and 800 meshes.
9. The one-part epoxy resin repair agent of claim 1, wherein the curing agent comprises dicyandiamide.
10. The one-part epoxy resin repair agent of claim 9, wherein the curing agent further comprises one or more of 2-ethyl-4-methylimidazole and T-5000 polyetheramine.
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