CN106590367B - A kind of carbon nanotube self repairing agent and its application in antistatic powder coating - Google Patents
A kind of carbon nanotube self repairing agent and its application in antistatic powder coating Download PDFInfo
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- CN106590367B CN106590367B CN201710026632.9A CN201710026632A CN106590367B CN 106590367 B CN106590367 B CN 106590367B CN 201710026632 A CN201710026632 A CN 201710026632A CN 106590367 B CN106590367 B CN 106590367B
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 77
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 62
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 62
- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 239000011248 coating agent Substances 0.000 title claims abstract description 34
- 239000000843 powder Substances 0.000 title claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 125000003700 epoxy group Chemical group 0.000 claims description 6
- 239000002109 single walled nanotube Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000003085 diluting agent Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 claims description 3
- AOBIOSPNXBMOAT-UHFFFAOYSA-N 2-[2-(oxiran-2-ylmethoxy)ethoxymethyl]oxirane Chemical compound C1OC1COCCOCC1CO1 AOBIOSPNXBMOAT-UHFFFAOYSA-N 0.000 claims description 2
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 2
- WPYCRFCQABTEKC-UHFFFAOYSA-N Diglycidyl resorcinol ether Chemical compound C1OC1COC(C=1)=CC=CC=1OCC1CO1 WPYCRFCQABTEKC-UHFFFAOYSA-N 0.000 claims description 2
- CTKINSOISVBQLD-UHFFFAOYSA-N Glycidol Chemical compound OCC1CO1 CTKINSOISVBQLD-UHFFFAOYSA-N 0.000 claims description 2
- FQYUMYWMJTYZTK-UHFFFAOYSA-N Phenyl glycidyl ether Chemical compound C1OC1COC1=CC=CC=C1 FQYUMYWMJTYZTK-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 125000002619 bicyclic group Chemical group 0.000 claims description 2
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000002071 nanotube Substances 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 15
- 230000008439 repair process Effects 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 238000009418 renovation Methods 0.000 description 6
- -1 2- ethyl imidazol Chemical compound 0.000 description 5
- 238000000034 method Methods 0.000 description 5
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- 230000003287 optical effect Effects 0.000 description 4
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 229920001225 polyester resin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OUPZKGBUJRBPGC-UHFFFAOYSA-N 1,3,5-tris(oxiran-2-ylmethyl)-1,3,5-triazinane-2,4,6-trione Chemical group O=C1N(CC2OC2)C(=O)N(CC2OC2)C(=O)N1CC1CO1 OUPZKGBUJRBPGC-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 102100026735 Coagulation factor VIII Human genes 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 101000911390 Homo sapiens Coagulation factor VIII Proteins 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
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- 229920000877 Melamine resin Polymers 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- 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
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- 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
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- 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
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- 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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Abstract
The invention belongs to antistatic powder coating fields, in particular to a kind of carbon nanotube self repairing agent and its application in antistatic powder coating: pass through resin for restoration pre-buried in carbon nanotube and curing agent, again by carbon nanotube together with coating matrix resin alloy, when powdery paints is destroyed by external force, carbon nanotube is damaged to be ruptured therewith, resin for restoration and curing agent outflow solidify repair crack in injury region, achieve the purpose that selfreparing.
Description
Technical field
The invention belongs to antistatic powder coating field, in particular to a kind of carbon nanotube self repairing agent and its antistatic
Application in powdery paints.
Background technique
Conductive powder paint, which refers to, to be applied on non-conductive substrates, with certain conduction electric current and dissipation electrostatic charge energy
The functional coating of power has very open research and development prospect and the increasingly increased market demand.China is in 20th century
Begin one's study the nineties antistatic powder coating, and it is anti-successively to develop 1900 types, WA-2929 type, H94 type based on carbon system etc.
Electrostatic coatings prevent electrostatic accident, mitigate the corrosion of equipment.
But powdery paints, by external impacts, there are crack, the coatings of powdery paints for internal structure
Often destroyed.Using conventional recovery technique, such as resin injection, mechanical connection subsidize, be glued the technology of subsidizing can be with
The crackle generated to the coating surface of powdery paints is repaired, but crackle existing for its internal structure is extremely difficult is detected, because
This cannot be repaired by conventional method.And the presence of these crackles can further expand to form bigger crack, into one
Step reduces the performance of material, how is repaired to extend the service life of material itself to powdery paints, is current coating row
One hot spot of industry research.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of carbon nanotube self repairing agent, the carbon including pre-buried resin is received
The carbon nanotube of mitron and pre-buried curing agent, preparation method are as follows:
Resin or curing agent are mixed with carbon nanotube, acetone is added, the resin/curing agent containing carbon nanotube point is made
Then dispersion liquid is added water or the aqueous solution containing surfactant, is sufficiently stirred, filtering, solids is dried to obtain it is pre-buried
The carbon nanotube of resin/pre-buried curing agent carbon nanotube,
Wherein, carbon nanotube can be orderly carbon nanotube, or unordered carbon nanotube,
As preferred: using single-walled carbon nanotube, multi-walled carbon nanotube is easy between layers in forming process
Various defects are captured for Trapping Centers, thus are usually covered with the defect of duck eye sample on the tube wall of multi-walled carbon nanotube；Single wall carbon
Nanotube is few compared to multi-wall carbon nano-tube defective tube, has been better protected from during pre-buried and renovation agent outflow has occurred, cause to repair
The phenomenon that multiple agent waste；For multi-walled carbon nanotube during pre-buried renovation agent, renovation agent is embedded in gap, it is also possible to will affect
Dispersion of the carbon nanotube in matrix resin, if renovation agent can be only embedded in using unordered single-walled carbon nanotube
The inside of every carbon pipe, it is smaller on the influence of carbon pipe dispersion performance,
Control be added the viscosity of the obtained resin/curing agent dispersion liquid containing carbon nanotube after acetone 1~
5Pa.S,
In the carbon nanotube of above-mentioned pre-buried resin, the weight ratio of resin and carbon nanotube is 10:1~20:1, pre-buried solidification
In the carbon nanotube of agent, the weight ratio of curing agent and carbon nanotube is 10:1~20:1, pre-buried resin and pre-buried curing agent
Weight ratio be 10:1~20:1, the use of the diameter of carbon nanotube is 10~20nm.
The present invention also provides a kind of application of above-mentioned carbon nanotube self repairing agent in antistatic powder coating, by
Pre-buried resin for restoration and curing agent in carbon nanotube, then carbon nanotube is worked as into powder together with coating matrix resin alloy
When coating is destroyed by external force, carbon nanotube is damaged to be ruptured therewith, resin for restoration and curing agent outflow, in injury region
Solidify repair crack, achieve the purpose that selfreparing,
Above-mentioned antistatic powder coating includes: in parts by weight
Above-mentioned matrix resin is mainly polyester resin, the resin have very high reactivity, excellent mechanical performance, compared with
High thermal stability and resistance to baking are yellowing, are chosen in particular from CPE-2070, HPE-1040, CPE-2035, CPE-2071, CPE-
2036 etc.,
For above-mentioned polyurethane when having melting levelability, melt viscosity is low, good to the adhesive force of coated article, does not need bottom
It applying, hydroxyl value is chosen in particular from S01-7, XAC-75,911, CQ107 etc. probably between 30~50,
Above-mentioned fluororesin has fabulous weatherability, excellent resistance to chemical corrosion, low friction type, hydrophobicity and good
Good oil repellency, the preferably fluororesin (FEVE) of hydroxyl are chosen in particular from wherein effective fluorine element content is 27%~29%
JF-3X, JF-4X, JF-4XB, JF-2X etc.,
Above-mentioned curing agent mainly uses Isocyanates curing agent and epoxies curing agent to be compounded, and compounds weight ratio
For 1:1.5~2.5, wherein Isocyanates curing agent is mainly TDI, HDI, PDI, MDI, IPDI etc.；Epoxies curing agent is
TGIC, HAA, ADR etc.,
Above-mentioned curing accelerator is mainly the substance that one kind can accelerate powder coating solidification, can be effectively reduced solidification
Temperature shortens curing time, reduces the dosage of curing agent, improves the physical mechanical property and its apparent, specific choosing of powdery paints
From 2-methylimidazole, 2- ethyl imidazol(e), 2-ethyl-4-methylimidazole, dibutyl tin dilaurate, LA-2208 etc.,
Above-mentioned reactive diluent can play the solidification for adjusting powder coating systems mainly for the viscosity of reduction system
Speed increases crosslink density, adjusts the effects of performance of product, and the reactive diluent of use mainly contains the low of epoxy group
The epoxide of molecular weight, such as methacrylic acid-beta-hydroxy ethyl ester (HEMA), 1,6- hexanediyl ester (HDDA), list
The acrylic glycidol ether of epoxy group, phenyl glycidyl ether, bicyclic oxygroup ethylene glycol bisglycidyl ether, resorcinol
Bisglycidyl ether etc.,
Contain a certain number of polar groups in the molecular structure of above-mentioned optical brightener, to the polarity additive in powdery paints
And there is good wetting action to the coated article of powdery paints；In the manufacture and work progress of powdery paints, effectively
It plays and eliminates coating shrinkage cavity, flake, the levelling effect and flatness, increase for pin hole, improving coating gloss, improving powder coating
Effect to the wettability of bottom liner and the dispersibility for improving other auxiliary agents, optical brightener be chosen in particular from RB701,363, YP-033,
A-388, SP-9512 etc.,
Above-mentioned levelling agent can promote coating to form a smooth, smooth, uniform film during the drying and film forming process,
It can be effectively reduced and cover with paint, lacquer, colour wash, etc. liquid surface tension, improve its levelability and uniformity, the permeability for covering with paint, lacquer, colour wash, etc. liquid can be improved, can be reduced brushing
When generate spot and a possibility that spot, increase spreadability, make film forming uniformly, naturally, levelling agent is chosen in particular from poly dimethyl silicon
Oxygen alkane, polymethylphenylsiloxane, alkyl-modified organosiloxane, terminal groups modification organosilicon, acrylic resin, Lauxite and
Melamine resin etc.；
Above-mentioned antistatic powder coating the preparation method comprises the following steps: according to above-mentioned formula, by matrix resin, polyurethane, fluororesin,
Curing agent, curing accelerator, carbon nanotube self repairing agent, reactive diluent, optical brightener, levelling agent are blended 10~20min and obtain
Powdery paints, blending speed are 100r/min~200r/min.
The beneficial effects of the present invention are: in place of overcome the deficiencies in the prior art, it is anti-to provide a kind of carbon nanotube selfreparing
Electrostatic powder coating, by renovation agent pre-buried in carbon nanotube and curing agent, when powdery paints is destroyed by external force,
Carbon nanotube is damaged to be ruptured therewith, and renovation agent and curing agent outflow solidify repair crack in injury region, reach selfreparing
Purpose also there is good antistatic property simultaneously because the presence of carbon nanotube.
Detailed description of the invention
Fig. 1 is the scanning electron microscope (SEM) photograph of appearance of coat after the antistatic powder coating of embodiment 2 carries out brake test.
Fig. 2 is the scanning electron microscope (SEM) photograph of appearance of coat after the antistatic powder coating of comparative example 1 carries out brake test.
Specific embodiment
In table 1, the preparation method of each carbon nanotube self repairing agent used in the examples is as follows:
The preparation of the carbon nanotube of pre-buried resin:
Polyester resin HPE-1040, polyurethane XAC-75, fluororesin JF-4X are mixed by the mass ratio of 100:30:15
It is even, and be uniformly mixed with the unordered single-walled carbon nanotube that diameter is 15~18nm according to the weight ratio of 12:1, and acetone is added and matches
The dispersion liquid that viscosity is 3.5Pa.S is made, the water of 4 times of volumes of dispersion liquid is then added, is sufficiently stirred after mixing, filters, to solid
50 DEG C of the body object carbon nanotubes for being dried to obtain pre-buried resin；
The preparation of the carbon nanotube of pre-buried curing agent:
Isocyanates curing agent HDI, epoxies curing agent HAA are uniformly mixed by the mass ratio of 3:6, and with identical rule
The unordered single-walled carbon nanotube of lattice is uniformly mixed according to the weight ratio of 10:1, and it is 2.0Pa.S's that acetone, which is added, to be configured to viscosity
Then dispersion liquid is added the water of 4 times of volumes of dispersion liquid, is sufficiently stirred after mixing, filtering, 50 DEG C of solids are dried to obtain it is pre-
Bury the carbon nanotube of curing agent；
By the carbon nanotube of pre-buried resin obtained above and the carbon nanotube of pre-buried curing agent by the different quality in table 1
Carbon nanotube self repairing agent is obtained than being uniformly mixed.
Table 1 (each numerical value is parts by weight in table 1)
According to the sorting and proportion of each embodiment in upper table, matrix resin, polyurethane, fluororesin, curing agent, solidification are promoted
20min is blended into agent, carbon nanotube self repairing agent, reactive diluent, optical brightener, levelling agent and obtains antistatic powder coating, altogether
Mixed speed is 160r/min.
The antistatic powder coating of embodiment 2 in upper table is formed a film on substrate aluminium flake solidification, and film-forming temperature is 150 DEG C,
Film forming thickness is 20um；After molding to be solidified, batten preparation is carried out according to standard DL-1000B, batten is stretched in 5mm/min and carried
The lower fracture of lotus effect；The sample of fracture is fixed together with clip again, after placing for 24 hours under room temperature (25 DEG C), observes breaking part
Pattern: as shown in Fig. 1.
Comparative example 1
Compared to antistatic powder coating prepared by embodiment 2, it is added without any carbon nanotube self repairing agent, and
This part resin and curing agent in self repairing agent are included into raw material, remaining component, preparation process are the same as embodiment 2.
It forms a film also according to above-mentioned curing process to the coating in comparative example 1, and carries out identical brake test, it is real
The scanning electron microscope (SEM) photograph for testing rear breaking part pattern is as shown in Fig. 2.
Claims (9)
1. a kind of preparation method of carbon nanotube self repairing agent, characterized by the following steps:
The carbon nanotube of the carbon nanotube of pre-buried resin and pre-buried curing agent is sufficiently mixed uniformly to get carbon nanotube selfreparing
Agent；
The carbon nanotube of the pre-buried resin or pre-buried curing agent the preparation method comprises the following steps: resin or curing agent are mixed with carbon nanotube
It closes, acetone is added, the resin/curing agent dispersion liquid containing carbon nanotube is made, water is then added or contains surfactant
Aqueous solution is sufficiently stirred, filtering, carbon nanotube/pre-buried curing agent carbon nanotube that pre-buried resin is dried to obtain to solids；
The carbon nanotube is unordered single-walled carbon nanotube.
2. a kind of carbon nanotube self repairing agent, it is characterised in that: the self repairing agent is carbon nanotube as described in claim 1
Carbon nanotube self repairing agent made from the preparation method of self repairing agent.
3. carbon nanotube self repairing agent as claimed in claim 2, it is characterised in that: the carbon nanotube of the pre-buried resin
In, the weight ratio of resin and carbon nanotube is 10:1~20:1；In the carbon nanotube of the pre-buried curing agent, curing agent and carbon
The weight ratio of nanotube is 10:1~20:1.
4. carbon nanotube self repairing agent as claimed in claim 2, it is characterised in that: in the self repairing agent, pre-buried tree
The weight ratio of rouge and pre-buried curing agent is 10:1~20:1, and the diameter of the carbon nanotube is 10~20nm.
5. a kind of application of carbon nanotube self repairing agent as claimed in claim 2 in antistatic powder coating.
6. application of the self repairing agent as claimed in claim 5 in antistatic powder coating, it is characterised in that: described resisting is quiet
Electro-powder coating includes in parts by weight,
7. application of the self repairing agent as claimed in claim 6 in antistatic powder coating, it is characterised in that: the matrix
Resin is CPE-2070, HPE-1040, CPE-2035, CPE-2071 or CPE-2036.
8. application of the self repairing agent as claimed in claim 6 in antistatic powder coating, it is characterised in that: the solidification
Agent is compounded to obtain using Isocyanates curing agent and epoxies curing agent, the compounding weight ratio of the two be 1:1.5~
2.5。
9. application of the self repairing agent as claimed in claim 6 in antistatic powder coating, it is characterised in that: the activity
Diluent be methacrylic acid-beta-hydroxy ethyl ester, 1,6 hexanediol diacrylate, monocycle oxygroup acrylic glycidol ether,
The ethylene glycol bisglycidyl ether or resorcinol bisglycidyl ether of phenyl glycidyl ether, bicyclic oxygroup.
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| CN103554840A (en) * | 2013-11-07 | 2014-02-05 | 中山大学 | Room-temperature self-repairing fiber-reinforced epoxy composite material and preparation method thereof |
| CN104194585A (en) * | 2014-09-18 | 2014-12-10 | 周诚 | Graphene-modified resin powder coating and production process thereof |
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