CN104178017A - Optical-thermal double-solidified baikeding for tinplate and coating method thereof - Google Patents
Optical-thermal double-solidified baikeding for tinplate and coating method thereof Download PDFInfo
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- CN104178017A CN104178017A CN201410420748.7A CN201410420748A CN104178017A CN 104178017 A CN104178017 A CN 104178017A CN 201410420748 A CN201410420748 A CN 201410420748A CN 104178017 A CN104178017 A CN 104178017A
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Abstract
The invention discloses an optical-thermal double-solidified baikeding for a tinplate and a coating method thereof. The optical-thermal double-solidified baikeding comprises the following materials in parts by weight: 20-30 parts of polyurethane acrylate resin, 5-8 parts of epoxy acrylate resin, 30-50 parts of rutile titanium dioxide, 15-25 parts of activated monomers, 3-6 parts of photoinitiators, 2-4 parts of thermal initiators, 2-5 parts of pigment wetting agents, 0.5-1.5 parts of adhesion promoters, 0.5-1 part of substrate wetting agents, 0.3-0.5 part of leveling agents and 0.3-0.5 part of defoaming agents. According to the method, the baikeding is obtained by utilizing optical-thermal double solidification. The optical-thermal double-solidified baikeding disclosed by the invention has the advantages of completeness in solidification, high solidification efficiency, energy conservation, environment friendliness, good paint film friability, good impact force resistance, high adhesive force and high-temperature boiling resistance, and thus a product is more reliable and convenient when in use and has good production application prospect.
Description
Technical field
The invention belongs to paint field, relate to the whitewash for tinplate of a kind of UV-light and hot dual cure, specifically a kind of photo-thermal dual cure Bai Keding and coating process thereof for tinplate.
Background technology
Tinplate is conventional packing materials of a kind of modern times, be mainly used in the production of food product pack can, tank, because tinplate is incorporated into the solidity to corrosion of the intensity of steel and formability and tin, tin-welding and appearance attractive in appearance among a kind of material, there is characteristic corrosion-resistant, nontoxic, that intensity is high, ductility is good.Tinplate, before using as wrapping material, generally first will print to meet concrete user demand to it, as the necessary preparation before printing, need be coated with one deck whitewash to tinplate, so that follow-up printing, this coating be called as Bai Keding.
The curing mode of traditional Bai Keding mainly contains two kinds: thermofixation and ultraviolet light polymerization.Thermofixation is as the most traditional, current most popular curing means, have that state of cure is high, the advantage of solidifying that level is dark, implementation condition is simple etc., but also there is in process of production the shortcomings such as long, solvent evaporates is serious, poor working environment, energy consumption is high, environmental protection index is defective of set time in it.And UV-curing is turned to emerging a kind of paint solidification mode, have that curing speed is exceedingly fast, the advantage such as good work environment, simple operation, energy consumption are low, environment-friendly solvent-free volatilization, on floor, furniture, wallcovering industry has certain application, but ultraviolet-curing paint has its limitation equally: state of cure is low, colored paint coating curing difficulty, solidify after paint film physical strength poor etc.
Use Bai Keding field for tinplate, the domestic overwhelming majority who applies in process of production is at present traditional heat curing coating system, and a small amount of ultraviolet light polymerization Bai Keding also exists restriction because it exists some inevitable problems to its large-scale application.There is the high and poor working environment of energy consumption, shortcoming that curing efficiency is low in thermofixation Bai Keding, but coating performance is good; Ultraviolet light polymerization Bai Keding does not have problems in energy consumption, environmental protection and efficiency, but its coating water boiling resistance, shock resistance, sticking power are generally poor, are difficult to the application obtaining at some specific fields.
Summary of the invention
The problem existing in order to overcome prior art, the object of this invention is to provide a kind of photo-thermal dual cure Bai Keding and coating process thereof for tinplate, the present invention is by adjustment and the innovation of curing mode, coordinate and obtain a kind of novel light-Re dual cure Bai Keding that can be applicable to tinplate with special coating system, effectively solve existing paint solidification incomplete, curing efficiency is low, energy-conserving and environment-protective performance is poor, paint film fragility is strong, impact resistance is poor, poor adhesive force, the problems such as high temperature resistant poach poor performance, make product more reliably convenient in use, there is production application prospect better.
For a photo-thermal dual cure Bai Keding for tinplate, it is characterized in that: this Bai Keding forms by following weight fraction:
Polyurethane acrylate resin: 20～30 parts; Epocryl: 5～8 parts; Rutile type Titanium Dioxide: 30～50 parts; Reactive monomer: 15～25 parts; Light trigger: 3～6 parts; Thermal initiator: 2～4 parts; Pigment wetting agent: 2～5 parts; Adhesion promoter: 0.5～1.5 part; Base material wetting agent: 0.5～1 part; Flow agent: 0.3～0.5 part; Defoamer: 0.3～0.5 part;
Wherein, the ratio of reactive monomer is: the ratio HEMA:DPGDA ratio of simple function reactive monomer and difunctionality reactive monomer is 1:2, adhesion promoter is silane coupling agent, consisting of of light trigger: TPO:184:819=1:2:1, thermal initiator is acyl class peroxide initiator, and base material wetting agent is polyether silicone class wetting agent, and pigment wetting agent is the multipolymer containing acidic-group, flow agent is organosilicon flow agent, and defoamer adopts vinylformic acid defoamer.
The coating process of a kind of photo-thermal dual cure Bai Keding for tinplate, it is characterized in that: the method utilizes light-Re dual cure to obtain Bai Keding, in the photocuring stage, make Bai Keding paint film be changed into rapidly solid-state by liquid state in the utmost point short period of time, and forming surface drying, paint film is had can be for the physical strength of printing; In the ensuing thermofixation stage, excite the thermal initiator of hiding in paint film system, causes unreacted resin and monomer in preliminary photocuring, makes paint film solidify to form complete cross-linking system completely.
The concrete ways of light-hot dual cure is as follows:
1) will after polyurethane acrylic resin, titanium dioxide, pigment wetting agent mixing, grind and become mill base through three-roller;
2) mill base, Epocryl, monomer, light trigger, thermal initiator, adhesion promoter, base material wetting agent, flow agent, defoamer are mixed and high speed dispersion;
3) gained Bai Keding is coated to tinplate surface, by ultra-violet curing machine primary solidification; After Lacquer finish, tinplate and painting are placed on to high bake in baking oven and carry out deep layer thermofixation.
In step 3) of the present invention, tinplate sheet material is placed in to 180 DEG C of high bakes of high temperature oven 15 minutes, remove tinplate surface oil film in case the levelling of Bai Keding with contact; Subsequently Bai Keding is uniformly coated on to the tinplate surface of processing, film thickness monitoring is at 10 μ m, after levelling, solidify through uv cure machine, again to the surface coated one deck baking vanish gloss oil after primary solidification, cated coating tinplate is positioned in high temperature oven to 100 DEG C of bakings 5 minutes again, when solidifying baking vanish, excite the deeply-curing for the second time of the thermal initiator initiation paint film in Bai Keding, obtain product.
The present invention, in the time selecting oligopolymer resin, selects flexible best polyurethane acrylate resin, because urethane acrylate has best flexibility, is all best selection for the string stress that solves more formidable shock resistance and ultraviolet light polymerization.
But polyurethane acrylate resin has the shortcoming that sticking power is low equally, therefore select with polyurethane acrylate resin system and coordinate good silane coupling agent as adhesion promoter, select Epoxy Phenolic Acrylates resin as auxiliary being used in conjunction with on a small quantity with resin of promoting sticking power.
The system that HEMA:DPGDA ratio is 1:2 is selected in reactive monomer aspect, and this kind of system difunctional monomer is more compared with monofunctional monomer content, makes coating in the situation that ensureing that viscosity and cross-linking density are moderate, can possess certain water boiling resistance ability.
Select Rutile type Titanium Dioxide, can coordinate with the initiator system that TPO, 819,184 forms, avoid the absorption bands of titanium dioxide to UV-light, thereby reach the object that improves initial cure degree.
Adding of pigment wetting agent, has solved titanium dioxide wetness degree bad, the problem that opacifying power is not strong, and titanium dioxide is more easily mixed with matrix resin, make system viscosity and colourity all meet Production requirement; Adding of base material wetting agent and flow agent, improve the surface tension of coating system, make the Bai Keding can be better and the wetting levelling of tinplate base material, improve the adhesion property of coating; Defoamer can ensure coating disperseing, transport and use in can alveolate generation and affect coating property.
The advantage that the present invention has is:
1. light-Re dual cure, meet the quick-setting while in early stage, state of cure and the physical strength of Bai Keding paint film are ensured, fit tightly each step in production application process, make the application of product more reliable, there is environmental protection, energy-conservation, gained paint film property is outstanding, the high feature of production efficiency.
2. polyurethane acrylate resin and Epoxy Phenolic Acrylates resin are used in conjunction with, make paint film system both had can external force resistance flexibility, have again very good sticking power.
3. by monomer, the selection of resin and the collocation of auxiliary agent, solved the equilibrium problem between each performance of paint film, the performance of paint film is able to perfect.
embodiment:
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1:
Light-Re dual cure Bai Keding of the present embodiment, its composition of raw materials is made up of each component of parts by weight as follows:
Polyurethane acrylate resin: 22 parts;
Epocryl: 5 parts
Rutile type Titanium Dioxide: 45 parts;
Reactive monomer: 15 parts;
Light trigger: 4 parts;
Thermal initiator: 2 parts;
Pigment wetting agent: 4 parts;
Adhesion promoter: 1 part;
Base material wetting agent: 1 part;
Flow agent: 0.5 part;
Defoamer: 0.5 part;
First, by 22 parts of urethane acrylates, 45 parts of Rutile type Titanium Dioxides, 4 parts of preliminary mixing of pigment wetting agent, premixture is made to mill base three times through three-roll grinder ground and mixed; With adding successively each 2 parts, 1 part, 1 part of 5 parts of Epoxy Phenolic Acrylates, light trigger 184,819, TPO in backward system, then add totally 15 parts of reactive monomer HEMA and HPGDA, 1 part of silicane adhesion promoter, 1 part of base material wetting agent, 1 part of flow agent, 1 part of defoamer; Finally before mixing, add 2 parts of acyl class superoxide thermal initiators; Finally mixture is fully uniformly mixed to 30 minutes under dispersion machine.
Tinplate is cut into the rectangle sheet material of 7cm × 15cm, this sheet material is placed in to 180 DEG C of high bakes of high temperature oven 15 minutes, remove tinplate surface oil film in case the levelling of Bai Keding with contact, subsequently the above-mentioned Bai Keding making is uniformly coated on to the tinplate surface of processing, film thickness monitoring is at 10 μ m, after levelling through uv cure machine fast setting, again to the surface coated one deck baking vanish gloss oil after primary solidification, cated coating tinplate is positioned in high temperature oven to 100 DEG C of bakings 5 minutes again, when solidifying baking vanish, excite the deeply-curing for the second time of the thermal initiator initiation paint film in Bai Keding, obtain intact sample.Finally, sticking power, resistance to impact shock, water boiling resistance ability etc. are further cut out and tested to sample.
The performance comparison of the present embodiment technique and traditional heat curing process and simple light curing process is as shown in table 1.
Three kinds of processing performance contrasts of table 1
Embodiment 2:
Light-Re dual cure Bai Keding of the present embodiment, its composition of raw materials is made up of each component of parts by weight as follows:
Polyurethane acrylate resin: 20 parts;
Epocryl: 10 parts
Rutile type Titanium Dioxide: 45 parts;
Reactive monomer: 12 parts;
Light trigger: 4 parts;
Thermal initiator: 2 parts;
Pigment wetting agent: 4 parts;
Adhesion promoter: 1 part;
Base material wetting agent: 1 part;
Flow agent: 0.5 part;
Defoamer: 0.5 part;
First, by 20 parts of urethane acrylates, 45 parts of Rutile type Titanium Dioxides, 4 parts of preliminary mixing of pigment wetting agent, premixture is made to mill base three times through three-roll grinder ground and mixed; With adding successively each 2 parts, 1 part, 1 part of 10 parts of Epoxy Phenolic Acrylates, light trigger 184,819, TPO in backward system, then add totally 12 parts of reactive monomer HEMA and HPGDA, 1 part of silicane adhesion promoter, 1 part of base material wetting agent, 1 part of flow agent, 1 part of defoamer; Finally before mixing, add 2 parts of acyl class superoxide thermal initiators; Finally mixture is fully uniformly mixed to 30 minutes under dispersion machine.
Tinplate is cut into the rectangle sheet material of 7cm × 15cm, this sheet material is placed in to 180 DEG C of high bakes of high temperature oven 15 minutes, remove tinplate surface oil film in case the levelling of Bai Keding with contact, subsequently the above-mentioned Bai Keding making is uniformly coated on to the tinplate surface of processing, film thickness monitoring is at 10 μ m, after levelling through uv cure machine fast setting, again to the surface coated one deck baking vanish gloss oil after primary solidification, cated coating tinplate is positioned in high temperature oven to 100 DEG C of bakings 5 minutes again, when solidifying baking vanish, excite the deeply-curing for the second time of the thermal initiator initiation paint film in Bai Keding, obtain intact sample.Finally, sticking power, resistance to impact shock, water boiling resistance ability etc. are further cut out and tested to sample.
The performance comparison of the present embodiment technique and traditional heat curing process and simple light curing process is as shown in table 2.
Three kinds of processing performance contrasts of table 2
。
Claims (5)
1. for a photo-thermal dual cure Bai Keding for tinplate, it is characterized in that: this Bai Keding forms by following weight fraction:
Polyurethane acrylate resin: 20～30 parts; Epocryl: 5～8 parts; Rutile type Titanium Dioxide: 30～50 parts; Reactive monomer: 15～25 parts; Light trigger: 3～6 parts; Thermal initiator: 2～4 parts; Pigment wetting agent: 2～5 parts; Adhesion promoter: 0.5～1.5 part; Base material wetting agent: 0.5～1 part; Flow agent: 0.3～0.5 part; Defoamer: 0.3～0.5 part;
Wherein, the ratio of reactive monomer is: the ratio HEMA:DPGDA ratio of simple function reactive monomer and difunctionality reactive monomer is 1:2, adhesion promoter is silane coupling agent, consisting of of light trigger: TPO:184:819=1:2:1, thermal initiator is acyl class peroxide initiator, and base material wetting agent is polyether silicone class wetting agent, and pigment wetting agent is the multipolymer containing acidic-group, flow agent is organosilicon flow agent, and defoamer adopts vinylformic acid defoamer.
Described in a claim 1 for the coating process of the photo-thermal dual cure Bai Keding of tinplate, it is characterized in that: the method utilizes light-Re dual cure to obtain Bai Keding, in the photocuring stage, make Bai Keding paint film be changed into rapidly solid-state by liquid state in the utmost point short period of time, and forming surface drying, paint film is had can be for the physical strength of printing; In the ensuing thermofixation stage, excite the thermal initiator of hiding in paint film system, causes unreacted resin and monomer in preliminary photocuring, makes paint film solidify to form complete cross-linking system completely.
3. the coating process of the photo-thermal dual cure Bai Keding for tinplate according to claim 2, is characterized in that: the concrete ways of light-hot dual cure is as follows:
1) will after polyurethane acrylic resin, titanium dioxide, pigment wetting agent mixing, grind and become mill base through three-roller;
2) mill base, Epocryl, monomer, light trigger, thermal initiator, adhesion promoter, base material wetting agent, flow agent, defoamer are mixed and high speed dispersion;
3) gained Bai Keding is coated to tinplate surface, by ultra-violet curing machine primary solidification; After Lacquer finish, tinplate and painting are placed on to high bake in baking oven and carry out deep layer thermofixation.
4. the coating process of the photo-thermal dual cure Bai Keding for tinplate according to claim 3, is characterized in that: select with polyurethane acrylate resin system and coordinate good silane coupling agent as adhesion promoter; Select Epoxy Phenolic Acrylates resin as auxiliary being used in conjunction with resin of promoting sticking power.
5. the coating process of the photo-thermal dual cure Bai Keding for tinplate according to claim 3, it is characterized in that: in step 3), tinplate sheet material is placed in to 180 DEG C of high bakes of high temperature oven 15 minutes, remove tinplate surface oil film in case the levelling of Bai Keding with contact; Subsequently Bai Keding is uniformly coated on to the tinplate surface of processing, film thickness monitoring is at 10 μ m, after levelling, solidify through uv cure machine, again to the surface coated one deck baking vanish gloss oil after primary solidification, cated coating tinplate is positioned in high temperature oven to 100 DEG C of bakings 5 minutes again, when solidifying baking vanish, excite the deeply-curing for the second time of the thermal initiator initiation paint film in Bai Keding, obtain product.
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Cited By (9)
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| CN105255353A (en) * | 2015-10-09 | 2016-01-20 | 安徽嘉年华漆业有限公司 | High-strength impact resistance oil paint |
| CN105255352A (en) * | 2015-10-09 | 2016-01-20 | 安徽嘉年华漆业有限公司 | Dual-cured impact-resistant anti-static paint |
| CN105400386A (en) * | 2015-12-21 | 2016-03-16 | 上海应用技术学院 | Dual UV curable peelable coating and preparation method thereof |
| CN105925060A (en) * | 2016-06-23 | 2016-09-07 | 佛山市彩贵新型材料有限公司 | Preparation method of ceramic jet ink and application method of ceramic jet ink |
| CN106046938A (en) * | 2016-06-23 | 2016-10-26 | 佛山市彩贵新型材料有限公司 | UV photo-thermal dual-curing ceramic ink-jet ink and preparation method thereof |
| CN107057555A (en) * | 2017-03-29 | 2017-08-18 | 张家港康得新光电材料有限公司 | Coating composition and coating |
| CN112159622A (en) * | 2020-09-30 | 2021-01-01 | 江阴广庆新材料科技有限公司 | Ultraviolet-curing white butadiene coating and preparation method and application thereof |
| CN116082944A (en) * | 2023-02-23 | 2023-05-09 | 芜湖春风新材料有限公司 | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof |
| CN116535966A (en) * | 2023-02-23 | 2023-08-04 | 深圳市华科创智技术有限公司 | Rapidly-cured UV (ultraviolet) coating and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105255353A (en) * | 2015-10-09 | 2016-01-20 | 安徽嘉年华漆业有限公司 | High-strength impact resistance oil paint |
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| CN106046938A (en) * | 2016-06-23 | 2016-10-26 | 佛山市彩贵新型材料有限公司 | UV photo-thermal dual-curing ceramic ink-jet ink and preparation method thereof |
| CN105925060A (en) * | 2016-06-23 | 2016-09-07 | 佛山市彩贵新型材料有限公司 | Preparation method of ceramic jet ink and application method of ceramic jet ink |
| CN105925060B (en) * | 2016-06-23 | 2019-04-02 | 佛山市彩贵新型材料有限公司 | A kind of preparation method of ceramic ink jet and the application method of ceramic ink jet |
| CN107057555A (en) * | 2017-03-29 | 2017-08-18 | 张家港康得新光电材料有限公司 | Coating composition and coating |
| CN112159622A (en) * | 2020-09-30 | 2021-01-01 | 江阴广庆新材料科技有限公司 | Ultraviolet-curing white butadiene coating and preparation method and application thereof |
| CN112159622B (en) * | 2020-09-30 | 2022-07-15 | 江阴广庆新材料科技有限公司 | Ultraviolet-curing white butadiene coating and preparation method and application thereof |
| CN116082944A (en) * | 2023-02-23 | 2023-05-09 | 芜湖春风新材料有限公司 | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof |
| CN116535966A (en) * | 2023-02-23 | 2023-08-04 | 深圳市华科创智技术有限公司 | Rapidly-cured UV (ultraviolet) coating and preparation method thereof |
| CN116082944B (en) * | 2023-02-23 | 2024-03-12 | 芜湖春风新材料有限公司 | Dual UV (ultraviolet) curing coating with ultrahigh boiling resistance, and preparation method and application thereof |
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Application publication date: 20141203 |