CN114163911A - Self-repairing coating applied to paint surface protective film - Google Patents
Self-repairing coating applied to paint surface protective film Download PDFInfo
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- CN114163911A CN114163911A CN202111597455.2A CN202111597455A CN114163911A CN 114163911 A CN114163911 A CN 114163911A CN 202111597455 A CN202111597455 A CN 202111597455A CN 114163911 A CN114163911 A CN 114163911A
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- protective film
- self
- component
- diluent
- coating applied
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- 238000000576 coating method Methods 0.000 title claims abstract description 49
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 230000001681 protective effect Effects 0.000 title claims abstract description 38
- 239000003973 paint Substances 0.000 title claims abstract description 37
- 239000003085 diluting agent Substances 0.000 claims abstract description 26
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 229920005862 polyol Polymers 0.000 claims abstract description 16
- 150000003077 polyols Chemical class 0.000 claims abstract description 16
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 230000002745 absorbent Effects 0.000 claims abstract description 8
- 239000002250 absorbent Substances 0.000 claims abstract description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000013329 compounding Methods 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000007790 scraping Methods 0.000 claims abstract description 5
- 230000003678 scratch resistant effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000012948 isocyanate Substances 0.000 claims description 9
- 150000002513 isocyanates Chemical class 0.000 claims description 9
- 125000005442 diisocyanate group Chemical group 0.000 claims description 7
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 6
- 239000004970 Chain extender Substances 0.000 claims description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 5
- 239000000080 wetting agent Substances 0.000 claims description 4
- 229920000515 polycarbonate Polymers 0.000 abstract description 6
- 239000004417 polycarbonate Substances 0.000 abstract description 6
- 239000002518 antifoaming agent Substances 0.000 abstract description 5
- 238000004383 yellowing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 19
- 238000005303 weighing Methods 0.000 description 15
- 238000002156 mixing Methods 0.000 description 14
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 5
- 239000013638 trimer Substances 0.000 description 5
- 239000013523 DOWSIL™ Substances 0.000 description 4
- 229920013731 Dowsil Polymers 0.000 description 4
- 239000005058 Isophorone diisocyanate Substances 0.000 description 4
- 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 4
- 239000012046 mixed solvent Substances 0.000 description 4
- 239000005056 polyisocyanate Substances 0.000 description 4
- 229920001228 polyisocyanate Polymers 0.000 description 4
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 150000005846 sugar alcohols Polymers 0.000 description 3
- 244000226021 Anacardium occidentale Species 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 235000020226 cashew nut Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- VKONPUDBRVKQLM-UHFFFAOYSA-N cyclohexane-1,4-diol Chemical compound OC1CCC(O)CC1 VKONPUDBRVKQLM-UHFFFAOYSA-N 0.000 description 2
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 description 2
- LTYMSROWYAPPGB-UHFFFAOYSA-N diphenyl sulfide Chemical compound C=1C=CC=CC=1SC1=CC=CC=C1 LTYMSROWYAPPGB-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 description 2
- AQHHHDLHHXJYJD-UHFFFAOYSA-N propranolol Chemical compound C1=CC=C2C(OCC(O)CNC(C)C)=CC=CC2=C1 AQHHHDLHHXJYJD-UHFFFAOYSA-N 0.000 description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 2
- VNTDZUDTQCZFKN-UHFFFAOYSA-L zinc 2,2-dimethyloctanoate Chemical compound [Zn++].CCCCCCC(C)(C)C([O-])=O.CCCCCCC(C)(C)C([O-])=O VNTDZUDTQCZFKN-UHFFFAOYSA-L 0.000 description 2
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 description 2
- 229940043375 1,5-pentanediol Drugs 0.000 description 1
- YXRKNIZYMIXSAD-UHFFFAOYSA-N 1,6-diisocyanatohexane Chemical compound O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O.O=C=NCCCCCCN=C=O YXRKNIZYMIXSAD-UHFFFAOYSA-N 0.000 description 1
- KYNFOMQIXZUKRK-UHFFFAOYSA-N 2,2'-dithiodiethanol Chemical compound OCCSSCCO KYNFOMQIXZUKRK-UHFFFAOYSA-N 0.000 description 1
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- FMRHJJZUHUTGKE-UHFFFAOYSA-N Ethylhexyl salicylate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1O FMRHJJZUHUTGKE-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- -1 easiness in cleaning Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- OHMBHFSEKCCCBW-UHFFFAOYSA-N hexane-2,5-diol Chemical compound CC(O)CCC(C)O OHMBHFSEKCCCBW-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- 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
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6644—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- 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
- C08G2150/00—Compositions for coatings
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a self-repairing coating applied to a paint protective film, which comprises 10-40% of a component A, 10-30% of a component B and 40-70% of a diluent; coating the other side of the TPU film coated with the acrylic pressure-sensitive adhesive with the self-repairing coating material, drying, compounding a protective film or a release film, and curing to obtain the paint surface protective film. Wherein the component A comprises 20-60% of prepolymer, 10-30% of polycarbonate polyol, 0.1-2% of flatting agent, 0.05-2% of defoaming agent, 0.01-1% of catalyst, 0.1-2% of ultraviolet absorbent, 1-10% of anti-scraping auxiliary agent and 20-60% of diluent. The paint surface protective film prepared by the self-repairing coating has no yellowing of the coating, has good scratch-resistant and self-repairing effects, and can prolong the service time of the paint surface protective film.
Description
Technical Field
The invention relates to the technical field of self-repairing coatings, in particular to a self-repairing coating applied to a paint surface protective film.
Background
The paint surface protective film is called PPF for short, also called invisible car cover, is a transparent protective film, is mainly used for protecting the appearance of the paint surface of vehicles such as automobiles, rail traffic and the like, and has the advantages of scratch resistance, wear resistance, repairability, acid rain resistance, bird dung corrosion resistance and the like, oxidation and discoloration retarding of paint, easiness in cleaning, paint film surface brightness increasing, heat insulation and the like.
With the development of the technical process, new functions of the paint protective film are developed more and more, upgraded products with new functions are continuously produced, and the types of the products are more abundant.
The coating of the paint surface protective film coating used at present is mainly thermosetting polyurethane resin, the product has slight yellow color, the yellowing condition of the coating becomes more and more serious as the service life of the product becomes longer, the phenomenon is more obvious in contrast of light-colored vehicle paint vehicles, and the phenomena seriously influence the popularization of the product.
With the gradual understanding and cognition of consumers on paint protective film products, the development and process improvement of self-repairing coatings become more and more important.
To this end, we propose self-healing coatings applied to paint protection films to solve the above problems.
Disclosure of Invention
The invention aims to provide a self-repairing coating applied to a paint protective film, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the self-repairing coating applied to the paint surface protective film comprises 10-40% of a component A, 10-30% of a component B and 40-70% of a diluent.
In a further embodiment, the component A comprises 20-60% of prepolymer, 0.1-2% of leveling agent, 0.05-2% of wetting agent, 0.01-1% of catalyst, 0.1-2% of ultraviolet absorbent, 1-10% of anti-scraping auxiliary agent and 20-60% of diluent.
In a further embodiment, the B component comprises 20-50% of diisocyanate, 30-60% of triisocyanate, and 10-40% of diluent.
In a further embodiment, the diluent comprises 10-30% butyl acetate, 10-30% ethyl acetate, 20-60% propylene glycol methyl ether acetate.
In a further embodiment, the prepolymer component comprises 10-50% of polyol, 10-40% of isocyanate, 2-20% of chain extender, 0.01-1% of catalyst and 20-50% of solvent.
In a further embodiment, the prepolymer is prepared by reacting the components continuously or indirectly for 4-8 hours at 80-120 ℃ under the condition of introducing nitrogen.
In a further embodiment, the self-repairing coating material is coated on the other side of the TPU film coated with the acrylic pressure-sensitive adhesive, dried, compounded with a protective film or a release film, and cured to obtain the paint surface protective film.
Compared with the prior art, the invention has the beneficial effects that:
the paint surface protective film prepared by the self-repairing coating has no yellowing of the coating, has good scratch-resistant and self-repairing effects, and can prolong the service time of the paint surface protective film.
Drawings
FIG. 1 is a schematic view of the preparation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The self-repairing coating applied to the paint surface protective film is resistant to a self-repairing coating applied to the paint surface protective film.
The self-repairing coating comprises 10-40% of a component A, 10-30% of a component B and 40-70% of a diluent.
Preferably, the self-repairing coating and the paint surface protective film are obtained by the following steps:
s1: weighing a predetermined amount of polyhydric alcohol in a beaker, and putting the polyhydric alcohol in a vacuum oven for dehydration for 1-3 hours at the temperature of 110-. Weighing a predetermined amount of isocyanate, adding the isocyanate into a three-neck flask, adding a solvent and a catalyst, heating to 60-80 ℃ under the protection of nitrogen, gradually dropwise adding 70-90 wt% of dehydrated polyol under the stirring state, keeping the temperature for 1-2 hours, gradually dropwise adding a chain extender and the rest of polyol, heating to 80-100 ℃, keeping the temperature for 2-4 hours, gradually cooling, adding the solvent, and blending to obtain a prepolymer with required solid content;
s2: weighing a predetermined amount of prepolymer, polycarbonate polyol, a leveling agent, a defoaming agent, a catalyst, an ultraviolet absorbent, an anti-scraping auxiliary agent and a diluent, placing the prepolymer, the polycarbonate polyol, the leveling agent, the defoaming agent, the catalyst, the ultraviolet absorbent, the anti-scraping auxiliary agent and the diluent in a mixing barrel, stirring the mixture at a rotating speed of 1500r/min for 20 to 40 minutes to obtain a coating A component, weighing a predetermined amount of diisocyanate, polyisocyanate and the diluent in the mixing barrel, and stirring the mixture at a rotating speed of 1000r/min for 10 to 30 minutes to obtain a coating B component;
s3: weighing a predetermined amount of the component A and a diluent in a mixing barrel, stirring for 10-20min at the rotating speed of 1000r/min, adding the component B, stirring for 10-30min at the rotating speed of 1000r/min, and preparing the self-repairing coating;
s4: coating the self-repairing coating on the other side of the TPU film coated with the acrylic pressure-sensitive adhesive, drying at 90-120 ℃ within 1-5min, compounding a protective film or a release film, and curing to obtain the paint surface protective film.
Preferably, the polyhydric alcohol in the step S1 is one or more selected from 2, 3-butanediol, propylene glycol, 1, 2-pentanediol, 1, 5-pentanediol, 1, 6-hexanediol, 2, 5-hexanediol, 1, 4-dihydroxycyclohexane, trimethylolpropane, glycerol, and pentaerythritol.
Preferably, the isocyanate in the S1 step is one or more of TDI (toluene diisocyanate), IPDI (isophorone diisocyanate), HDI (hexamethylene diisocyanate), MDI (diphenylmethane diisocyanate), HMDI (dicyclohexylmethane diisocyanate), XDI (dimethylene phenyl diisocyanate), LDI (lysine diisocyanate).
Preferably, in step S1, the catalyst is one of stannous octoate, dibutyltin dilaurate, zinc isooctanoate and zinc neodecanoate.
Preferably, the chain extender in the step S1 is one or more of 1, 4-butanediol, 4-dihydroxy diphenyl sulfide, 4-diamino diphenyl sulfide, 1, 4-dihydroxy cyclohexane and 2, 2-dithiodiethanol.
Preferably, the solvent in the step S1 is one or more of propylene glycol methyl ether acetate, butyl acetate, ethyl acetate, toluene and propylene glycol monomethyl ether.
Preferably, the polycarbonate polyol in step S2 is one of Desmophen C1200, Desmophen C2100, DURANOL 5651, DURANOL 5652, UH-CARB100 and UH-CARB 200.
Preferably, in the step S2, the leveling agent is one of AFCONA-3031, AFCONA-3033, AFCONA-3670, AFCONA-3777, TEGO Glide 450 and TEGO Glide 430.
Preferably, the wetting agent in step S2 is one of BYK-306, BYK-307, BYK-310, BYK-313, BYK-323, BYK-333, BYK-346 and BYK-378.
Preferably, in step S2, the catalyst is one of stannous octoate, dibutyltin dilaurate, zinc isooctanoate and zinc neodecanoate.
Preferably, in step S2, the uv absorber is one of Uvinul 3035, TINUVIN320, TINUVIN350, TINUVIN900, Eversorb 12, Eversorb 39, Eversorb 71 and Eversorb 80.
Preferably, the anti-scratch auxiliary agent of step S2 is one of DOWSIL 11, DOWSIL 18, DOWSIL 54, DOWSIL 55, ACM-SC 050.
Preferably, the diluent in the step S2 is one or more of propylene glycol methyl ether acetate, butyl acetate, ethyl acetate, toluene and propylene glycol monomethyl ether.
Preferably, the diisocyanate obtained in step S2 is one or more selected from TDI, IPDI, HDI, MDI, HMDI, and XDI.
Preferably, the polyisocyanate of step S2 is one or more of TDI trimer, HDI trimer, IPDI trimer, HDI biuret, TDI-HDI mixed trimer, MDI-TDI mixed trimer, TDI-XDI mixed trimer.
Preferably, the diluent in the step S3 is one or more of methyl isobutyl ketone, propylene glycol methyl ether acetate, butyl acetate, ethyl acetate, toluene, xylene, methyl ethyl ketone, diacetone alcohol, n-butanol, and propylene glycol monomethyl ether.
Example 1
40g of polyol was weighed in a beaker, and put in a vacuum oven to be dehydrated for 2 hours at 120 ℃. Weighing 24g of isocyanate, adding the isocyanate into a three-neck flask, adding 20g of mixed solvent and 0.1g of catalyst, heating to 70 ℃ under the protection of nitrogen, adding 0.1g of catalyst, gradually dropwise adding 34g of dehydrated polyol under stirring, keeping the temperature for 2 hours, gradually dropwise adding 3.5g of chain extender and 6g of polyol, and heating to 100 ℃. Gradually cooling, adding 8g of mixed solvent, stirring and mixing uniformly to obtain a prepolymer;
weighing 30g of prepolymer, 10g of polycarbonate polyol, 0.2g of flatting agent, 0.1g of defoaming agent, 0.1g of catalyst, 0.3g of ultraviolet absorbent, 1.5g of scratch-resistant auxiliary agent and 45g of mixed diluent, and stirring in a mixing barrel at the rotating speed of 1500r/min for 25min to obtain the component A of the coating. Weighing 30g of diisocyanate, 20g of polyisocyanate and 30g of diluent in a mixing barrel, and stirring at the rotating speed of 1000r/min for 15min to obtain a coating B component;
weighing 30g A components and 50g of diluent in a mixing barrel, stirring for 10min at the rotating speed of 1000r/min, then adding 9g B components, stirring for 20min at the rotating speed of 1000r/min, and preparing the self-repairing coating;
coating the self-repairing coating on the other side of the TPU film coated with the acrylic pressure-sensitive adhesive, drying at 110 ℃ for 2min, compounding a release film, and curing at 45 ℃ for 72h to obtain the paint surface protective film.
Example 2
40g of polyol was weighed in a beaker, and put in a vacuum oven to be dehydrated for 2 hours at 120 ℃. Weighing 20g of isocyanate, adding the isocyanate into a three-neck flask, adding 20g of mixed solvent and 0.1g of catalyst, heating to 70 ℃ under the protection of nitrogen, adding 0.1g of catalyst, gradually dropwise adding 36g of dehydrated polyol under stirring, keeping the temperature for 1.5 hours, gradually dropwise adding 3g of chain extender and 4g of polyol, and heating to 100 ℃. Gradually cooling, adding 6g of mixed solvent, stirring and mixing uniformly to obtain a prepolymer;
weighing 30g of prepolymer, 15g of polycarbonate polyol, 0.2g of flatting agent, 0.1g of defoaming agent, 0.1g of catalyst, 0.4g of ultraviolet absorbent, 2.5g of scratch-resistant auxiliary agent and 45g of mixed diluent, and stirring in a mixing barrel at the rotating speed of 1500r/min for 25min to obtain the component A of the coating. Weighing 30g of diisocyanate, 20g of polyisocyanate and 30g of diluent in a mixing barrel, and stirring at the rotating speed of 1000r/min for 15min to obtain a coating B component;
weighing 30g A components and 45g of diluent in a mixing barrel, stirring for 10min at the rotating speed of 1000r/min, then adding 9g B components, stirring for 20min at the rotating speed of 1000r/min, and preparing the self-repairing coating;
coating the self-repairing coating on the other side of the TPU film coated with the acrylic pressure-sensitive adhesive, drying at 125 ℃ for 1.5min, compounding a protective film, and curing at 45 ℃ for 72h to obtain the paint surface protective film.
Comparative example 1
Weighing 10g of NATOCO PBXDS200B, 20g of butyl acetate and 15g of ethyl acetate, stirring and mixing uniformly, adding 20g of NATOCO NKD-003, stirring and mixing uniformly, filtering, coating the mixture on the other side of a TPU film coated with acrylic pressure-sensitive adhesive, drying at 120 ℃ for 2min, compounding a release film, and curing at 45 ℃ for 72h to obtain the paint surface protective film.
Comparative example 2
Weighing 3.5g of Cashew 3900-6081 and 15g of Cashew 3000-.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The self-repairing coating applied to the paint surface protective film is characterized in that: the self-repairing coating comprises a component A, a component B and a diluent, wherein the component A comprises a prepolymer, a leveling agent, a wetting agent, a catalyst, an ultraviolet absorbent, an anti-scraping auxiliary agent and a diluent; the component B comprises diisocyanate, triisocyanate and a diluent.
2. The self-repairing coating applied to a paint protective film according to claim 1, characterized in that: the percentage of the component A is 10-40%, the percentage of the component B is 10-30%, and the percentage of the diluent is 40-70%.
3. The self-repairing coating applied to a paint protective film according to claim 1, characterized in that: the component A comprises the following components in percentage by weight: 20-60% of prepolymer, 0.1-2% of flatting agent, 0.05-2% of wetting agent, 0.01-1% of catalyst, 0.1-2% of ultraviolet absorbent, 1-10% of scratch-resistant auxiliary agent and 20-60% of diluent.
4. The self-healing coating applied to a paint protective film according to claim 3, characterized in that: the component B comprises the following components in percentage by weight: 20-50% of diisocyanate, 30-60% of triisocyanate and 10-40% of diluent.
5. The self-repairing coating applied to a paint protective film according to claim 1, characterized in that: the diluent comprises 10-30% of butyl acetate, 10-30% of ethyl acetate and 20-60% of propylene glycol methyl ether acetate.
6. The self-healing coating applied to a paint protective film according to claim 5, characterized in that: the prepolymer component in the component A comprises 10-50% of polyol, 10-40% of isocyanate, 2-20% of chain extender, 0.01-1% of catalyst and 20-50% of solvent.
7. The self-repairing coating applied to a paint protective film according to claim 1, characterized in that: the prepolymer in the component A is prepared by continuously or indirectly reacting the components at 80-120 ℃ for 4-8 hours under the condition of introducing nitrogen.
8. The self-repairing coating applied to a paint protective film according to claim 1, characterized in that: coating the other side of the TPU film coated with the acrylic pressure-sensitive adhesive with the self-repairing coating material, drying, compounding a protective film or a release film, and curing to obtain the paint surface protective film.
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