CN101837667B - Ultraviolet cured coating and application thereof - Google Patents
Ultraviolet cured coating and application thereof Download PDFInfo
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- CN101837667B CN101837667B CN2010101567798A CN201010156779A CN101837667B CN 101837667 B CN101837667 B CN 101837667B CN 2010101567798 A CN2010101567798 A CN 2010101567798A CN 201010156779 A CN201010156779 A CN 201010156779A CN 101837667 B CN101837667 B CN 101837667B
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Abstract
The invention belongs to the technical field of coating compositions and solves the problems of decreased adhesion of the coating to the magnesium alloy surface and easy ageing and cracking of the coating in the prior art. An ultraviolet cured coating comprises the following components in percentage by weight: a hardened first coat comprising 6 to 18 percent of low-functionality monomer, 30 to 51 percent of low-functionality prepolymer, 5 to 8 percent of alumina powder; 0.5 to 1.5 percent of antioxidant, less than 3 percent of auxiliary agent, 1 to 3 percent of photoinitiator and 18 to 35 percent of mixed solvent, an intermediate coat comprising 3 to 15 percent of low-functionality monomer, 35 to 57 percent of low-functionality prepolymer, 0.5 to 6 percent of transparent pigment, 1 to 4 percent of auxiliary agent, 1 to 3 percent of photoinitiator and 23 to 45 percent of mixed solvent, and a high-gloss cover coat comprising 1 to 8 percent of low-functionality monomer, 8 to 15 percent of low-functionality prepolymer, 10 to 22 percent of high-functionality monomer, 36 to 45 percent of high-functionality prepolymer, 1 to 4 percent of auxiliary agent, 3 to 5 percent of photoinitiator and 20 to 40 percent of mixed solvent.
Description
Technical field
The invention belongs to the coating composition technical field.
Background technology
As everyone knows, magnesium alloy is one of the lightest engineering metal material, has plurality of advantages such as specific strength and specific stiffness height, is the metal material that this century development potentiality is arranged most, is widely used in fields such as Aero-Space, automobile making, telecommunications.But the surface porosity of magnesium alloy materials and porous, be prone to oxidizedly to make that also the application of this type alloy material is restricted greatly; Therefore people rack one's brains for it; Done number of research projects; Have in recent years much and report that with guard method wherein the organic coating resist technology is exactly a kind of effective way about Mg alloy surface is anticorrosion.Chinese patent CN1486795 discloses a kind of three layers of being made up of powder coating, acrylic resin dyed layer and ultraviolet light polymerization finish paint and has decorated and protective finish, and its technology is relatively complicated, and processing cost is higher; Chinese patent CN101173144, CN101294011 relate to that individual layer ultraviolet light polymerization protective finish and Chinese patent CN101376790 introduce is that the subbing that a kind of saturated polyester resin, amino resins and epoxy resin of hydroxyl is formed all belongs to a kind of protective finish; Technology is simpler; Do not have an aesthetic, its performance also difficulty reaches the capable internal standard of mobile phone.Other has Chinese patent CN200410015203.4; Name is called and discloses a kind of phone housing in the patent documentation of " a kind of ultraviolet-curing paint " and decorate and use ultraviolet-curing paint; Although its performance can satisfy the requirement of mobile phone plastic shell, because of its to relatively poor can't on magnesium alloy shell of cell phone, the use of the bigger Mg alloy surface adhesive force of polarity.
Ultraviolet light polymerization (UV) coating is because of excellent specific properties such as the good anti-wear performance of tool, weather resistance, chemical resistance performance and luster, high-hardness and highs, and the decoration that has been widely used in the mobile phone plastic shell has been gone up with protection.Because the organic coating resist technology is with low cost, technology is simple, decorative effect is outstanding, has caused the great interest of mobile-phone manufacturers, just progressively this technology is applied to the magnesium alloy shell of cell phone manufacturing.Owing to the property of magnesium alloy, UV coating still is unsatisfactory in its surperficial application.Tracing it to its cause mainly contains two: one, and the performance difference of expanding with heat and contract with cold of magnesium alloy materials and UV material is too big, and difference variation Da Yi causes that adhesive force descends; The 2nd, the repeatedly curing of UV coating is prone to cause the season cracking of filming.
Summary of the invention
The purpose of this invention is to provide a kind of can being coated on the magnesium alloy, performance reaches domestic mobile phone production row internal standard, good decorating effect, with low cost, simple, the colory ultraviolet-curing paint of construction.
For realizing the object of the invention, ultraviolet-curing paint of the present invention comprises the stiffened primary coat, and inter coat and high light face are coated with.
Described stiffened primary coat comprises that percentage by weight is: 6～18 low group monomer, 30～51 low degree of functionality prepolymer, 5～8 alumina powder, 0.5～1.5 anti-oxidant, the auxiliary agent less than 3,1～3 light trigger, 18～35 mixed solvent.
Described inter coat comprises that percentage by weight is: 3～15 low group monomer, 35～57 low degree of functionality prepolymer, 0.5～6 transparent pigment, 1～4 auxiliary agent, 1～3 light trigger, 23～45 mixed solvent.
Described high light face is coated with and comprises that percentage by weight is: 1～8 low group monomer, 8～15 low degree of functionality prepolymer, 10～22 high functionality monomer; 36～45 high functionality prepolymer; 1～4 auxiliary agent, 3～5 light trigger, 20～40 mixed solvent.
Described low group monomer is meant: 3; 3,5-trimethylcyclohexyl acrylic acid ester (TMCHA), isodecyl acrylic acid ester (ISODA), iso-bornyl acrylate (IBOA), 2-(right-cumenyl-phenoxy group)-ethyl propylene acid esters monomer such as (CPEA) single functionality and 6-hexanediyl ester (HDDA), propylene glycol diacrylate (DPGDA), neopentylglycol diacrylate (NPGDA), ethoxyquin bisphenol a diacrylate (BPA4EODA), tristane dimethanol diacrylate bifunctionality monomers such as (DCPDA).
Described high functionality monomer is meant: tetramethylol methane tetraacrylate (PET4A), dipentaerythritol five acrylic acid ester (DPPA) and dipentaerythritol acrylate polyfunctionality monomers such as (DPHA).
Described low degree of functionality prepolymer is meant: the quantity of carbon-to-carbon double bond (DB/mol) is 2～3 prepolymer, mainly comprises epoxy acrylate class prepolymer, polyester acrylate class prepolymer and urethane acrylate class prepolymer.
Described high functionality prepolymer is meant: the quantity of carbon-to-carbon double bond (DB/mol) mainly comprises polyester acrylate class prepolymer, urethane acrylate class prepolymer and polyether acrylate class prepolymer greater than 3 prepolymer.
Described light trigger mainly comprises: 1-hydroxyl-cyclohexyl-phenyl ketone (Irgacure184), 2-hydroxy-2-methyl-1-phenyl-1-acetone (Irgacure1173), 2,4,6-trimethylbenzoyl diphenyl phosphine oxide (LucirinTPO) etc.
Described anti-oxidant mainly comprises: four [β-(3; The 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (anti-oxidant 1010), 3; 5-di-t-butyl-4 hydroxy phenyl propionic acid octadecanol ester (anti-oxidant 1076), 2,6-BHT (anti-oxidant BHT) etc.
Described wear-resisting alumina powder comprises: alumina powder (footpath is 2～6 μ m) or nano-alumina powder.
Described auxiliary agent mainly comprises: levelling agent, dispersant, antifoaming agent, adhesion promoter and salt fog resistance auxiliary agent.
Described mixed solvent mainly comprises: normal propyl alcohol, isopropyl alcohol, n-butanol, ethyl acetate, butyl acetate, acetone, butanone, methyl iso-butyl ketone (MIBK), cyclohexanone, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether etc.
The present invention has following several advantages:
1. selected for use the wear-resisting alumina powder can improve the abrasion resistance of coating, the adding of anti-oxidant also benefits to the surface protection of magnesium alloy;
2. consider that the performance of expanding with heat and contract with cold that magnesium alloy materials and UV are coated with interlayer differs greatly; In the prescription design, take into account the combination of hardness and toughness; Used the excellent low degree of functionality prepolymer of high functionality prepolymer and tensile property composite, made made UV coating when standing thermal shock, film not ftracture, adhesive force can reach 0 grade.
3. because the magnesium alloy coating of the present invention's design is a multilayer UV coating; Because of primary coat and repeatedly UV curing being prone to cause film performance decline of inter coat; In stiffened primary coat and the painted inter coat of UV, suitably reduce the consumption of light trigger; Make it before the UV face is coated with curing, be in semi-cured state, stable to guarantee film performance.
Specific embodiments
The objective of the invention is the UV protective layer that has high rigidity, high abrasion characteristic again in the existing colorful metal finishing effect of magnesium alloy shell of cell phone top finishing, to reach protection and the demand of decorating.Embodiment is earlier the stiffened primary coat to be sprayed on the good magnesium alloy shell of cell phone surface of preliminary treatment; Carry out vacuum aluminum-coated on its surface then; At the painted inter coat of aluminium plated surface spraying UV, spray high light face at last again and be coated with again, can make the magnesium alloy UV coating of excellent performance.
Below in conjunction with embodiment technical scheme of the present invention is described further:
The prepolymer of at first introducing the present invention and being adopted, following by the degree of functionality tabulation:
Table 1: low degree of functionality (composition of 2～3DB/mol) prepolymers, coding and manufacturer
Table 2: high functionality (composition of 4～10DB/mol) prepolymers, coding and manufacturer
Embodiment 1.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 8%, iso-bornyl acrylate (IBOA) 6%, urethane acrylate UV-3000B (Japan is synthetic) 35%; Epoxy acrylate 621-100 (Changxing chemical industry) 15%, alumina powder 6%, anti-oxidant 1%; Levelling agent 1%, dispersant 1%, adhesion promoter 1%; Light trigger 2%, mixed solvent 24%.
The percentage by weight of transparent painted inter coat is: propylene glycol diacrylate (DPGDA) 6%, 6-hexanediyl ester (HDDA) 3%, urethane acrylate 6176 (Changxing chemical industry) 25%; Epoxy acrylate 621-100 (Changxing chemical industry) 20%, transparent pigment violet 23 %, levelling agent 1%; Dispersant 1%; Antifoaming agent 1%, light trigger 2%, mixed solvent 38%.
High light face is coated with percentage by weight: 3,3, and 5-trimethylcyclohexyl acrylic acid ester (TMCHA) 2%; Neopentylglycol diacrylate (NPGDA) 3%, epoxy acrylate 621-100 (Changxing chemical industry) 13%, dipentaerythritol acrylate (DPHA) 15%; Urethane acrylate UV-7600B (Japan is synthetic) 25%, urethane acrylate CN996 (Sartomer) 12%, levelling agent 1%; Salt fog resistance auxiliary agent 2%, light trigger 4%, mixed solvent 23%.
Above-mentioned three kinds of coating mixing manufacture methods: the accurate weighing of the said raw materials by weight of will filling a prescription adds successively and mixes in the vessel, under the environment of dustless lucifuge, stirs (needing 2 hours approximately), filters and packages to get final product.Construction technology: the stiffened primary coat is sprayed on the good magnesium alloy shell of cell phone of preliminary treatment surface, carries out vacuum aluminum-coatedly then on its surface, in aluminium plated surface spraying UV is painted, be coated with, spray high light face at last again and be coated with, film performance is seen table 3.
Embodiment 2.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 6%, isodecyl acrylic acid ester (ISODA) 6%, urethane acrylate UV-3000B (Japan is synthetic) 30%; Epoxy acrylate CN117 (Sartomer) 20%, alumina powder 6%, anti-oxidant 1%; Levelling agent 1%, dispersant 1%, adhesion promoter 1%; Light trigger 2%, mixed solvent 26%.
The percentage by weight of transparent painted inter coat is: propylene glycol diacrylate (DPGDA) 4%, 6-hexanediyl ester (HDDA) 5%, urethane acrylate 6148T-85 (Changxing chemical industry) 30%; Epoxy acrylate 621-100 (Changxing chemical industry) 15%, transparent pigment violet 23 %, levelling agent 1%; Dispersant 1%; Antifoaming agent 1%, light trigger 2%, mixed solvent 38%.
High light face is coated with percentage by weight: neopentylglycol diacrylate (NPGDA) 5%, epoxy acrylate 621-100 (Changxing chemical industry) 11%, dipentaerythritol acrylate (DPHA) 13%; Urethane acrylate U400 (BAYER company) 28%; Urethane acrylate CN996 (Sartomer) 13%, levelling agent 1%, salt fog resistance auxiliary agent 2%; Light trigger 4%, mixed solvent 23%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 3.
Embodiment 3.
The percentage by weight of stiffened primary coat: ethoxyquin bisphenol a diacrylate (BPA4EODA) 7%, 3,3,5-trimethylcyclohexyl acrylic acid ester (TMCHA) 4%; Urethane acrylate UV-3200B (Japan is synthetic) 38%, epoxy acrylate 6210G (Changxing chemical industry) 12%, alumina powder 8%; Anti-oxidant 1%, levelling agent 1%, dispersant 1%; Adhesion promoter 1%, light trigger 2%, mixed solvent 25%.
The percentage by weight of transparent painted inter coat is: neopentylglycol diacrylate (NPGDA) 5%, 6-hexanediyl ester (HDDA) 4%, urethane acrylate 6176 (Changxing chemical industry) 28%; Epoxy acrylate 3082 (COGNIS company) 25%, transparent pigment 4%, levelling agent 1%; Dispersant 1%; Antifoaming agent 1%, light trigger 2%, mixed solvent 29%.
High light face is coated with percentage by weight: 3,3, and 5-trimethylcyclohexyl acrylic acid ester (TMCHA) 4%; 6-hexanediyl ester (HDDA) 2%, epoxy acrylate 3082 (COGNIS company) 15%, dipentaerythritol acrylate (DPHA) 12%; Urethane acrylate UV-7605B (Japan is synthetic) 30%, urethane acrylate CN997 (Sartomer) 10%, levelling agent 1%; Salt fog resistance auxiliary agent 2%, light trigger 4%, mixed solvent 20%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 3.
Embodiment 4.
The percentage by weight of stiffened primary coat: tristane dimethanol diacrylate (DCPDA) 4%, iso-bornyl acrylate (IBOA) 6%, urethane acrylate 6230 (COGNIS company) 33%; Epoxy acrylate UAVPLS2266 (BAYER company) 18%, alumina powder 7%, anti-oxidant 1.5%; Levelling agent 1%, dispersant 1%, adhesion promoter 0.5%; Light trigger 2%, mixed solvent 26%.
The percentage by weight of transparent painted inter coat is: 2-(right-cumenyl-phenoxy group)-ethyl propylene acid esters (CPEA) 5%, 6-hexanediyl ester (HDDA) 8%, urethane acrylate 6148J-75 (Changxing chemical industry) 32%; Epoxy acrylate CN119 (Sartomer) 25%, transparent pigment 2%, levelling agent 1%; Dispersant 1%; Antifoaming agent 1%, light trigger 2%, mixed solvent 23%.
High light face is coated with percentage by weight: iso-bornyl acrylate (IBOA) 4%, 6-hexanediyl ester (HDDA) 3%, epoxy acrylate 6233 (Changxing chemical industry) 12%; Dipentaerythritol five acrylic acid ester (DPPA) 15%, urethane acrylate UV-7600B (Japan is synthetic) 12%, urethane acrylate CN996 (Sartomer) 26%; Levelling agent 1%; Salt fog resistance auxiliary agent 2%, light trigger 4%, mixed solvent 21%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 3.
Embodiment 5.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 5%, 3,3,5-trimethylcyclohexyl acrylic acid ester (TMCHA) 4%; Urethane acrylate 6210 (COGNIS company) 36%, epoxy acrylate 6210G (Changxing chemical industry) 14%, alumina powder 6%; Anti-oxidant 1%, levelling agent 1%, dispersant 1%; Adhesion promoter 1%, light trigger 2%, mixed solvent 29%.
The percentage by weight of transparent painted inter coat is: isodecyl acrylic acid ester (ISODA) 3%, 6-hexanediyl ester (HDDA) 4%, urethane acrylate 6176 (Changxing chemical industry) 30%; Epoxy acrylate 6210G (Changxing chemical industry) 22%, transparent pigment 5%, levelling agent 1%; Dispersant 1%; Antifoaming agent 1%, light trigger 2%, mixed solvent 31%.
High light face is coated with percentage by weight: 3,3, and 5-trimethylcyclohexyl acrylic acid ester (TMCHA) 4%; Tristane dimethanol diacrylate (DCPDA) 2%, epoxy acrylate 3082 (COGNIS company) 13%, dipentaerythritol acrylate (DPHA) l5%; Urethane acrylate CN293 (Sartomer) 10%, urethane acrylate CN997 (Sartomer) 28%, levelling agent 1%; Salt fog resistance auxiliary agent 2%, light trigger 4%, mixed solvent 21%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 3.
Embodiment 6.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 5%, 3,3,5-trimethylcyclohexyl acrylic acid ester (TMCHA) 4%; Ethoxyquin bisphenol a diacrylate (BPA4EODA) 9%, urethane acrylate 6210 (COGNIS company) 20%, epoxy acrylate 6210G (Changxing chemical industry) 18%, alumina powder 5%; Anti-oxidant 0.5%, levelling agent 0.5%, dispersant 1%; Adhesion promoter 1%, light trigger 1%, mixed solvent 35%.
The percentage by weight of transparent painted inter coat is: isodecyl acrylic acid ester (ISODA) 7%, 6-hexanediyl ester (HDDA) 8%, urethane acrylate 6176 (Changxing chemical industry) 20%; Epoxy acrylate 6210G (Changxing chemical industry) 15%, transparent pigment 6%, levelling agent 1%; Dispersant 1%; Antifoaming agent 2%, light trigger 1%, mixed solvent 39%.
High light face is coated with percentage by weight: 3,3, and 5-trimethylcyclohexyl acrylic acid ester (TMCHA) 5%; Tristane dimethanol diacrylate (DCPDA) 3%, epoxy acrylate 3082 (COGNIS company) 8%, dipentaerythritol acrylate (DPHA) 22%; Urethane acrylate CN293 (Sartomer) 10%, urethane acrylate CN997 (Sartomer) 26%, levelling agent 1%; Salt fog resistance auxiliary agent 2%, light trigger 3%, mixed solvent 20%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 4.
Embodiment 7.
The percentage by weight of stiffened primary coat: tristane dimethanol diacrylate (DCPDA) 2%, iso-bornyl acrylate (IBOA) 4%, urethane acrylate 6230 (COGNIS company) 33%; Epoxy acrylate UAVPLS2266 (BAYER company) 18%, alumina powder 8%, anti-oxidant 1.5%; Levelling agent 0.5%, dispersant 0.5%, adhesion promoter 0.5%; Light trigger 3%, mixed solvent 29%.
The percentage by weight of transparent painted inter coat is: isodecyl acrylic acid ester (ISODA) 2%, 6-hexanediyl ester (HDDA) 1%, urethane acrylate 6148J-75 (Changxing chemical industry) 30%; Epoxy acrylate CN119 (Sartomer) 24%, transparent pigment 6%, levelling agent 0.3%; Dispersant 0.3%; Antifoaming agent 0.4%, light trigger 3%, mixed solvent 33%.
High light face is coated with percentage by weight: ethoxyquin bisphenol a diacrylate (BPA4EODA) 1%, epoxy acrylate 6233 (Changxing chemical industry) 8%, dipentaerythritol five acrylic acid ester (DPPA) 10%; Urethane acrylate UV-7600B (Japan is synthetic) 12%; Urethane acrylate CN996 (Sartomer) 24%, levelling agent 1.5%, salt fog resistance auxiliary agent 2.5%; Light trigger 5%, mixed solvent 36%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 4.
Embodiment 8.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 8%, isodecyl acrylic acid ester (ISODA) 10%, urethane acrylate UV-3000B (Japan is synthetic) 28%; Epoxy acrylate CN117 (Sartomer) 21%, alumina powder 8%, anti-oxidant 1%; Levelling agent 1%, dispersant 1%, adhesion promoter 1%; Light trigger 3%, mixed solvent 18%.
The percentage by weight of transparent painted inter coat is: propylene glycol diacrylate (DPGDA) 4%, 6-hexanediyl ester (HDDA) 6%, urethane acrylate 6148T-85 (Changxing chemical industry) 25%; Epoxy acrylate 621-100 (Changxing chemical industry) 13%, transparent pigment 0.5%, levelling agent 1.5%; Dispersant 1.5%; Antifoaming agent 0.5%, light trigger 3%, mixed solvent 45%.
High light face is coated with percentage by weight: neopentylglycol diacrylate (NPGDA) 1%, epoxy acrylate 621-100 (Changxing chemical industry) 8%, dipentaerythritol acrylate (DPHA) 10%; Urethane acrylate U400 (BAYER company) 23%; Urethane acrylate CN996 (Sartomer) 13%, levelling agent 0.5%, salt fog resistance auxiliary agent 0.5%; Light trigger 4%, mixed solvent 40%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 4.
Embodiment 9.
The percentage by weight of stiffened primary coat: propylene glycol diacrylate (DPGDA) 7%; Isodecyl acrylic acid ester (ISODA) 8%, urethane acrylate UV-3000B (Japan is synthetic) 29%, epoxy acrylate CN117 (Sartomer) 18%; Alumina powder 6%; Anti-oxidant 1%, light trigger 3%, mixed solvent 28%.
The percentage by weight of transparent painted inter coat is: propylene glycol diacrylate (DPGDA) 6%, 6-hexanediyl ester (HDDA) 7%, urethane acrylate 6148T-85 (Changxing chemical industry) 27%; Epoxy acrylate 621-100 (Changxing chemical industry) 13%, transparent pigment 5%, levelling agent 0.5%; Dispersant 0.5%; Antifoaming agent 1%, light trigger 2%, mixed solvent 38%.
High light face is coated with percentage by weight: neopentylglycol diacrylate (NPGDA) 3%, epoxy acrylate 621-100 (Changxing chemical industry) 9%, dipentaerythritol acrylate (DPHA) 14%; Urethane acrylate U400 (BAYER company) 30%; Urethane acrylate CN996 (Sartomer) 15%, levelling agent 2%, salt fog resistance auxiliary agent 2%; Light trigger 5%, mixed solvent 20%.
Above-mentioned three kinds of coating mixing manufacture methods are identical with embodiment 1 with construction technology, and film performance is seen table 4.
Table 3: magnesium alloy three is coated with a plating composite membrane all-round property testing table
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Hardness (Chinese pencil) | ≥2H | ≥2H | ≥2H | ≥2H | ≥2H |
| Adhesive force (3M glue) | 0 grade | 0 grade | 0 grade | 0 grade | 0 grade |
| Anti-wear performance (RCA) | ＞250 times | ＞250 times | ＞500 times | ＞250 times | ＞500 times |
| Ethanol-tolerant (99% ethanol) | ＞800 times | ＞800 times | ＞800 times | ＞800 times | ＞800 times |
| The thermal shock test | 0 grade | 0 grade | 1 grade | 0 grade | 1 grade |
| Salt spray test | No change | No change | No change | No change | No change |
| Acid resistance (5%HCl48h) | No change | No change | No change | No change | No change |
| Alkali resistance (5%NaOH48h) | No change | No change | No change | No change | No change |
| Anti-buffer solution (PH4.6) | 0 grade | 0 grade | 0 grade | 0 grade | 0 grade |
| Pliability (folding 90 °) | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture |
Table 4: magnesium alloy three is coated with a plating composite membrane all-round property testing table
| Test event | Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 |
| Hardness (Chinese pencil) | ≥2H | ≥2H | ≥2H | ≥2H |
| Adhesive force (3M glue) | 0 grade | 0 grade | 0 grade | 0 grade |
| Anti-wear performance (RCA) | ＞250 times | ＞250 times | ＞250 times | ＞500 times |
| Ethanol-tolerant (99% ethanol) | ＞800 times | ＞800 times | ＞800 times | ＞800 times |
| The thermal shock test | 0 grade | 0 grade | 0 grade | 1 grade |
| Salt spray test | No change | No change | No change | No change |
| Acid resistance (5%HCl48h) | No change | No change | No change | No change |
| Alkali resistance (5%NaOH48h) | No change | No change | No change | No change |
| Anti-buffer solution (PH4.6) | 0 grade | 0 grade | 0 grade | 0 grade |
| Pliability (folding 90 °) | Do not ftracture | Do not ftracture | Do not ftracture | Do not ftracture |
Annotate:
1. anti-wear performance test: the RCA abrasion appearance according to the general employing U.S. promise Man of mobile phone manufacturing produces is tested;
2. ethanol-tolerant test: 500 gram forces act on the erasing rubber that cotton balls that 99% alcohol steep is wrapped in, and the maintenance cotton balls is moistening back and forth 800 of the surperficial wipings of measured object, and the measured object surface should not have significant change;
3. thermal shock test :-40 ℃ of 1hr～85 ℃ 1hr are a circulation, test 30 circulations, and the normal temperature held was tested adhesive force after 4 hours;
4. salt spray test: 35 ℃/85%RH/72hr/5%NaCl water smoke, observe no wrinkling, bubbling or phenomenon such as come off
5. the test of anti-buffer solution: it is that 4.6 buffer solution soaks 48hr that measured object is put into pH value, takes out to clean normal temperature and place after 4 hours and test adhesive force;
6. pliability test: mobile phone manufacturing standard is whether the coating of observing behind folding 90 ° of the workpiece that construction is good on the workpiece can explosion;
7. the method for testing of other project is tested by relevant criterion.
Table 3,4 test results show that the present invention has realized the goal of the invention requirement, have reached the industry standard that mobile phone is produced, and can satisfy magnesium alloy case demands of applications on mobile phone.
Claims (7)
1. a ultraviolet-curing paint is characterized in that comprising the stiffened primary coat, and inter coat and high light face are coated with,
Described stiffened primary coat comprises that percentage by weight is:
6～18 low group monomer, 30～51 low degree of functionality prepolymer, 5～8 alumina powder, 0.5～1.5 anti-oxidant, auxiliary agent, 1～3 light trigger, 18～35 mixed solvent less than 3;
Described inter coat comprises that percentage by weight is:
3～15 low group monomer, 35～57 low degree of functionality prepolymer, 0.5～6 transparent pigment, 1～4 auxiliary agent, 1～3 light trigger, 23～45 mixed solvent;
Described high light face is coated with and comprises that percentage by weight is:
1～8 low group monomer, 8～15 low degree of functionality prepolymer, 10～22 high functionality monomer, 36～45 high functionality prepolymer, 1～4 auxiliary agent, 3～5 light trigger, 20～40 mixed solvent;
Described low group monomer is meant: 3; 3,5-trimethylcyclohexyl acrylic acid ester (TMCHA), isodecyl acrylic acid ester (ISODA), iso-bornyl acrylate (IBOA), 2-(right-cumenyl-phenoxy group)-ethyl propylene acid esters (CPEA) single functionality monomer and 6-hexanediyl ester (HDDA), propylene glycol diacrylate (DPGDA), neopentylglycol diacrylate (NPGDA), ethoxyquin bisphenol a diacrylate (BPA4EODA), tristane dimethanol diacrylate (DCPDA) bifunctionality monomer;
Described high functionality monomer is meant: tetramethylol methane tetraacrylate (PET4A), dipentaerythritol five acrylic acid ester (DPPA) and dipentaerythritol acrylate (DPHA) polyfunctionality monomer;
Described low degree of functionality prepolymer is meant: the quantity of carbon-to-carbon double bond (DB/mol) is 2～3 prepolymer, mainly comprises epoxy acrylate class prepolymer, polyester acrylate class prepolymer and urethane acrylate class prepolymer;
Described high functionality prepolymer is meant: the quantity of carbon-to-carbon double bond (DB/mol) mainly comprises polyester acrylate class prepolymer, urethane acrylate class prepolymer and polyether acrylate class prepolymer greater than 3 prepolymer.
2. ultraviolet-curing paint according to claim 1; It is characterized in that described light trigger mainly comprises: 1-hydroxyl-cyclohexyl-phenyl ketone (Irgacure184), 2-hydroxy-2-methyl-1-phenyl-1-acetone (Irgacure1173), 2; 4,6-trimethylbenzoyl diphenyl phosphine oxide (LucirinTPO).
3. ultraviolet-curing paint according to claim 1; It is characterized in that described anti-oxidant mainly comprises: four [β-(3; The 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 3,5-di-t-butyl-4 hydroxy phenyl propionic acid octadecanol ester, 2,6-BHT.
4. ultraviolet-curing paint according to claim 1, it is characterized in that described wear-resisting alumina powder comprises: a footpath is alumina powder or the nano-alumina powder of 2～6 μ m.
5. ultraviolet-curing paint according to claim 1 is characterized in that described auxiliary agent mainly comprises: levelling agent, dispersant, antifoaming agent, adhesion promoter and salt fog resistance auxiliary agent.
6. ultraviolet-curing paint according to claim 1 is characterized in that mixed solvent comprises normal propyl alcohol, isopropyl alcohol, n-butanol, ethyl acetate, butyl acetate, acetone, butanone, methyl iso-butyl ketone (MIBK), cyclohexanone, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether.
7. application that requires 1～6 described any one ultraviolet-curing paint according to aforesaid right; It is characterized in that earlier primary coat being sprayed on the good Mg alloy surface of preliminary treatment; Carry out vacuum aluminum-coated on its surface then; At aluminium plated surface spray colouration inter coat, spray high light face at last again and be coated with again, can make magnesium alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101567798A CN101837667B (en) | 2010-04-27 | 2010-04-27 | Ultraviolet cured coating and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101567798A CN101837667B (en) | 2010-04-27 | 2010-04-27 | Ultraviolet cured coating and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101837667A CN101837667A (en) | 2010-09-22 |
| CN101837667B true CN101837667B (en) | 2012-11-07 |
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| CN2010101567798A Expired - Fee Related CN101837667B (en) | 2010-04-27 | 2010-04-27 | Ultraviolet cured coating and application thereof |
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| CN102212311A (en) * | 2011-05-09 | 2011-10-12 | 中国工程物理研究院化工材料研究所 | Colorful ultraviolet (UV) light solidifying paint |
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| CN108929626A (en) * | 2018-06-27 | 2018-12-04 | 惠州市嘉淇涂料有限公司 | A kind of UV-curing composite coating and its application method |
| CN108929627A (en) * | 2018-06-27 | 2018-12-04 | 惠州市嘉淇涂料有限公司 | A kind of photo-thermal dual curable plastic coating |
| CN111077757A (en) * | 2019-12-03 | 2020-04-28 | 东莞市晶博光电有限公司 | Stereoscopic watch dial and manufacturing process thereof |
| CN111484798B (en) * | 2020-04-08 | 2022-06-03 | 广州申威新材料科技有限公司 | Matte UV coating for white board film and preparation method thereof |
| CN113969074B (en) * | 2021-10-12 | 2022-08-05 | 三峡大学 | Transparent radiation refrigeration film of DCPDA/DPHA photocuring monomer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557882A (en) * | 2004-01-14 | 2004-12-29 | 惠州市华阳化工有限公司 | Ultraviolet cured paint |
| CN1796478A (en) * | 2004-12-20 | 2006-07-05 | 比亚迪股份有限公司 | Coating material solidified by ultraviolet light and prepartion method |
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2010
- 2010-04-27 CN CN2010101567798A patent/CN101837667B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557882A (en) * | 2004-01-14 | 2004-12-29 | 惠州市华阳化工有限公司 | Ultraviolet cured paint |
| CN1796478A (en) * | 2004-12-20 | 2006-07-05 | 比亚迪股份有限公司 | Coating material solidified by ultraviolet light and prepartion method |
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| Publication number | Publication date |
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| CN101837667A (en) | 2010-09-22 |
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