CN102952455B - Ultraviolet light curing transparent priming paint and preparation method and use method thereof - Google Patents
Ultraviolet light curing transparent priming paint and preparation method and use method thereof Download PDFInfo
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Abstract
The invention discloses an ultraviolet light curing transparent priming paint and a preparation method and a use method thereof. The ultraviolet light curing transparent priming paint comprises the following components in percentage by weight: 20-30% of bisphenol A epoxy acrylate resin, 15-25% of polyester acrylate, 1-10% of urethane acrylate, 5-10% of reagent type hydroxyethyl acrylate, 10-20% of tripropylene glycol diacrylate, 12-25% of trimethylolpropane triacrylate, 4-6% of photoinitiator, 10-25% of filling powder and 0.4-0.8% of promotor. The ultraviolet light curing transparent priming paint is suitable for laser roller construction, has good grittiness and transparency, has the characteristics that sanding is not needed for semi-curing recoating between film layers and the like, and has thick coating performance and the performance that the surface is similar to a mirror surface, and compared with conventional roller coating, the coating weight is greatly increased, roller coating processes are saved, the priming paint is sanded by a sanding machine without large pressure and with a small number of sanded films, a workpiece has no bright spots, the fullness of a product is guaranteed, the product quality is improved, the loss of the machine is smallreduced, and the use amount of sanding belts is greatly reduced.
Description
Technical field
The present invention relates to a kind of ultraviolet cured primer, particularly relate to and be a kind ofly applied to ultraviolet curing transparent priming of the radium-shine roller of woodenware and preparation method thereof and using method.
Background technology
At present, the roll coating model generally adopted in UV wood lacquer field all carries out coating construction with ganoid General Purpose Rubber roller or silica gel roller, the method existing problems are that disposable glue spread is few, and average coat amount is 15 ~ 20g/ ㎡, and surface effect is more coarse, in pitted skin, and the more coarse more difficult sand milling in the larger surface of glue spread, if want sand milling to do finish paint to surface again without bright spot, then need grinder intensified pressure, sand falls more paint and just can sand flat without bright spot, very large to the loss in abrasive band.Because sand falls too many paint paint film, the product fullness ratio carrying out finish paint can be poor, needs the more number of times of roller coat to meet customer requirement.
The radium-shine roller roller coat priming paint being proposed laser sculpture wire casing is started at present on the market for above-mentioned phenomenon, common UV roller coat transparent priming is by the just 15 ~ 20g/ ㎡ of paint amount after radium-shine roller roller application, and it is rugged by roller plate surface, cause sand milling operation below to go on, thick painting (25 ~ 35g/ ㎡) required by radium-shine roller and the surfacing effect close to minute surface can not be reached.Its reason is that common UV roller coat transparent priming can not inside complete wetting to the wire casing of the radium-shine roller of laser sculpture, and paints after radium-shine roller roller coat plate and can not spread levelling out rapidly onboard, so can not be applicable to radium-shine roller coating machine completely.
Summary of the invention
The object of the present invention is to provide a kind of glue spread large, coating surface is smooth, has semicure recoat between good sanding and transparency, paint film layer and is applied to ultraviolet curing transparent priming of the radium-shine roller of woodenware and preparation method thereof and using method without features such as sand millings.
For achieving the above object, the invention provides a kind of ultraviolet curing transparent priming, comprise the component of following weight percent:
Described auxiliary agent is made up of the wetting dispersing agent accounting for the anti-settling agent of coating gross weight 0.2%, the flow agent of 0.1-0.2% and 0.1-0.2%;
Described filling powder is made up of the transparent powder of the talcum powder and 4-8% that account for coating gross weight 6-12%.
Described bisphenol A epoxy acrylate resin is obtained by bisphenol A epoxide resin and acrylic or methacrylic acid-respons, containing aromatic ring and position, side hydroxyl in its molecular structure.
Described polyester acrylate is the polyester acrylate resin of two functional groups of modification.
Described urethane acrylate is the UV light-cured resin of a kind of two senses of being synthesized by aliphatics carbimide and polyester, HEA.
Described light trigger adopts 6420 models and the combination of Tianjin English power 1173 model of Changxing chemistry.
Described anti-settling agent is hydrophobic type silicon-dioxide, and flow agent is esters of acrylic acid flow agent.
The present invention also provides a kind of preparation method of described ultraviolet curing transparent priming, comprises the following steps:
Step one, by weight percentage the bisphenol A epoxy acrylate resin in component, polyester acrylate, urethane acrylate, reagent type Hydroxyethyl acrylate (2-HEA), tripropylene glycol diacrylate (TPGDA), trimethylolpropane tris vinylformic acid (TMPTA), light trigger, wetting dispersing agent and flow agent are added container successively, rotate dispersion 3-5 minute to evenly;
Step 2, while stirring by weight percentage anti-settling agent, filling powder are joined step one be uniformly dispersed after component in, rotate dispersion 15-20 minute to fineness≤60 μm, filter and obtain described ultraviolet curing transparent priming.
With 500PRM(rev/min in described step one) rotating speed disperses; Disperse with 1200PRM rotating speed in step 2.
The present invention also provides a kind of using method of described ultraviolet curing transparent priming, comprises the following steps:
Step one, paste wooden skin ground;
Step 2, roller coat compound type transparent putty, glue spread 15 ~ 20g/ ㎡, carries out semicure;
Step 3, roller coat transparent priming, glue spread 15 ~ 20g/ ㎡, carries out semicure;
Ultraviolet curing transparent priming described in step 4, roller coat, glue spread 25 ~ 35g/ ㎡, carries out semicure;
Step 5, again ultraviolet curing transparent priming described in roller coat, glue spread 25 ~ 35g/ ㎡, carries out all solidstate;
Step 6,400 order abrasive bands are adopted to carry out sanding;
Step 7, roller coat or spray paint.
In described step 7, roller coat or spraying UV finish paint, or spraying PU or PE finish paint.
Above technique priming paint effect is very smooth close to minute surface, grinder sand falls the sanding effect that 10g/ ㎡ just can obtain without bright spot, plate also has paint film 100g/ ㎡, if step 4, five or two roller coat change common roller coat transparent priming into and coordinate conventional roller use then can obtain maximum paint film 80g/ ㎡, because it is more little more smooth that common roller coating machine is roller coat amount, and roller coat amount is larger just uneven, grinder is caused to need intensified pressure, the unfairness part that sand falls surface just can reach does priming paint sanding required by finish paint without bright spot, like this minimum that sand falls paint film 20g/ ㎡, just requirement can be reached, last plate only has paint film 60g/ ㎡.
By above contrast, the furniture after paint film 100g/ ㎡ carrying out finish paint and carry out finish paint on paint film 60g/ ㎡, fullness ratio differs greatly, and is two kinds of different effects, two kinds of different class, and to the wear pattern contrast of grinder also clearly.Import abrasive band sand conventional roller transparent priming one joined by grinder can 300 square metres, sand, the special transparent priming one of sand radium-shine roller of the present invention can 500 square metres, sand, general 180/ of import abrasive band price, a normal UV furniture coating line one day can roller coat 1200 square metres of furniture boards, so within 1 year, within 330 days, calculate (all the other time calculates dull season and has a rest) by actual production:
Sand normal transparent priming paint=(330 × 1200) ÷ 300 × 180=237600 unit
Sand the present invention radium-shine roller dedicated transparent priming paint=(330 × 1200) ÷ 500 × 180=129600 unit
Difference price=108000 yuan
Conclusion is: the present invention is when ensureing that UV production line machine loss is less, and not only lacked with abrasive band province money but also improved quality product, application prospect is boundless.
Ultraviolet curing transparent priming of the present invention, be highly suitable for the construction of radium-shine roller, there is the good sanding of common UV transparent priming and transparency, and between paint film layer semicure recoat without features such as sand millings, there is again thick painting (25 ~ 35g/ ㎡) and the surfacing performance close to mirror effect, significantly glue spread is improve than traditional roller coat, save roller coat operation, grinder is made not need to adjust too large pressure sand to fall less paint film, just can reach without bright spot by the good priming paint workpiece of sand, ensure that product fullness ratio improves quality product, machine loss is reduced, significantly reduce abrasive band usage quantity.Overall raising coating efficiency, application prospect is boundless.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Each component of the present invention all adopts currently available products, the bisphenol A epoxy acrylate resin that the present invention adopts is reacted by bisphenol A epoxide resin and vinylformic acid (or methacrylic acid) and obtained, containing aromatic ring and position, side hydroxyl in its molecular structure, favourable to raising sticking power, principal feature is: photocuring reaction speed is very fast, greatly, chemicals-resistant corrosive nature is excellent for cured strength and tensile strength.
The polyester acrylate that the present invention adopts is the polyester acrylate resin of two functional groups of modification, is characterized in: curing speed is fast, and at the bottom of shrinking percentage, surface drying Canon obtains good grinability.
The urethane acrylate that the present invention adopts is the UV light-cured resin of a kind of two senses of being synthesized by aliphatics carbimide and polyester, HEA etc., its reactive behavior is not as epoxy acrylate, but the snappiness of the increase cured layer that it is unique, improve sticking power, highly polished to raising product fullness ratio and levelling property well help, adding of this resin is that transparent priming of the present invention is applicable to one of important factor of radium-shine roller.
The reactive thinner that the present invention adopts is: reagent type Hydroxyethyl acrylate (2-HEA), chemical formula: CH
2=CHCOOCH
2cHOH, the polymkeric substance of side chain with hydroxy functional group can be generated with various unsaturated monomer copolymerization containing ethylene double bond in molecule, this functional group is applicable to the cross-linking polymerization of prepolymerization and post polymerization, be characterized in that consumption is few, dilution property is strong, strengthen the levelling property of product, crucial effect can be played at transparent priming of the present invention, the paint roller on radium-shine roller can be made to be coated onto on furniture board and spread levelling out rapidly afterwards.
Described tripropylene glycol diacrylate (TPGDA) has low viscosity and has preferably snappiness, and the medium dilution capacity of described trimethylolpropane tris vinylformic acid (TMPTA), provides high curing rate and high crosslink density.
The light trigger that the present invention adopts is 6420 of Changxing chemistry and 1173 of Ying Li, and the filling powder of employing is: the LH-667 of the modest and amiable talcum powder group in talcum powder Liaoning, ensures good grinability; The transparent powder TM-2500 of the holy chemical industry of monkey, reduces costs while guarantee transparency.
The auxiliary agent that the present invention uses is: anti-settling agent is a kind of ultra-fine, hydrophobic type silicon-dioxide that specific surface area is 220 ㎡/g; Flow agent is esters of acrylic acid flow agent, has quick levelling and consistency is good, can recoatability, and has the performance pressing down bubble, froth breaking concurrently; Wetting dispersing agent adopts EFKA4010, its chemical constitution is modified polyurethane, more than active ingredient 50-52%, be mainly stable inorganic pigment and comprise carbon black and the macromolecule dispersing agent developed, can jitter time be reduced, improve gloss, the problem preventing loose colour He grow dim, improve pigmenting power, cost performance is good.
Each component that embodiment 1 ~ 4 is selected and weight and constituent part model as shown in Table 1, can be but product type listed in being not limited to show.
Table one
Below in conjunction with embodiment 1-4, technical scheme of the present invention is described.
Embodiment 1
One, the special ultraviolet curing transparent priming of radium-shine roller of the present invention is prepared:
Get each component according to " embodiment 1 " in table one listed weight, preparation method in accordance with the following steps:
Step one, bisphenol A epoxy acrylate resin, polyester acrylate, urethane acrylate, reagent type Hydroxyethyl acrylate (2-HEA), tripropylene glycol diacrylate (TPGDA), trimethylolpropane tris vinylformic acid (TMPTA), light trigger (Changxing 6420, Tianjin English power 1173), wetting dispersing agent (dust not blocks EFKA4010) and flow agent (prosperous titanium gram MAS) are added container successively, with 500PRM dispersion 3-5 minute to evenly;
Step 2, add anti-settling agent (Degussa A200), talcum powder (the modest and amiable LH-667 in Liaoning), transparent powder (monkey holy chemical industry TM-2500) while stirring, after adding, disperse 15-20 minute to fineness≤60 μm with 1200RPM, 100 orders filter and obtain the described special ultraviolet curing transparent priming of radium-shine roller.
Two, the using method of the special ultraviolet curing transparent priming of radium-shine roller of the present embodiment, has the following steps:
Paste wooden skin ground-roller coat compound type transparent putty 15 ~ 20g/ ㎡, semicure-roller coat transparent priming 15 ~ 20g/ ㎡, semicure-radium-shine roller roller coat dedicated transparent priming paint 25 ~ 35g/ ㎡, semicure-radium-shine roller roller coat dedicated transparent priming paint 25 ~ 35g/ ㎡, all solidstate-sanding (400 order abrasive band)-roller coat (spraying) UV finish paint or spraying PU(or PE) finish paint.
Traditional performance detected result, as shown in " embodiment 1 " corresponding data in table two.
Embodiment 2
With each composition weight in table one listed by " embodiment 2 ", repeat the method (only each composition weight changes) described in example 1, the special ultraviolet curing transparent priming of radium-shine roller of obtained embodiment 2, constructs according to the using method of the special ultraviolet curing transparent priming of the radium-shine roller of example 1.
Traditional performance detected result, as shown in " embodiment 2 " corresponding data in table two.
Embodiment 3
With each composition weight in table one listed by " embodiment 3 ", repeat the method (only each composition weight changes) described in example 1, the special ultraviolet curing transparent priming of radium-shine roller of obtained embodiment 3, constructs according to the using method of the special ultraviolet curing transparent priming of the radium-shine roller of example 1.
Traditional performance detected result, as shown in " embodiment 3 " corresponding data in table two.
Embodiment 4
With each composition weight in table one listed by " embodiment 4 ", repeat the method (only each composition weight changes) described in example 1, the special ultraviolet curing transparent priming of radium-shine roller of obtained embodiment 4, constructs according to the using method of the special ultraviolet curing transparent priming of the radium-shine roller of example 1.
Traditional performance detected result, as shown in " embodiment 4 " corresponding data in table two.
Table two
Claims (7)
1. a ultraviolet curing transparent priming, is characterized in that, comprises the component of following weight percent:
Described auxiliary agent is made up of the wetting dispersing agent accounting for the anti-settling agent of coating gross weight 0.2%, the flow agent of 0.1-0.2% and 0.1-0.2%;
Described filling powder is made up of the transparent powder of the talcum powder and 4-8% that account for coating gross weight 6-12%;
Described urethane acrylate is the UV light-cured resin of a kind of two senses of being synthesized by aliphatics carbimide and polyester, HEA;
Described bisphenol A epoxy acrylate resin is obtained by bisphenol A epoxide resin and acrylic or methacrylic acid-respons, containing aromatic ring and position, side hydroxyl in its molecular structure;
Described polyester acrylate is the polyester acrylate resin of two functional groups of modification.
2. ultraviolet curing transparent priming as claimed in claim 1, is characterized in that, described light trigger adopts 6420 models and the combination of Tianjin English power 1173 model of Changxing chemistry.
3. ultraviolet curing transparent priming as claimed in claim 2, it is characterized in that, described anti-settling agent is hydrophobic type silicon-dioxide, and flow agent is esters of acrylic acid flow agent.
4. a preparation method for ultraviolet curing transparent priming as claimed in claim 1, is characterized in that, comprises the following steps:
Step one, by weight percentage the bisphenol A epoxy acrylate resin in component, polyester acrylate, urethane acrylate, reagent type Hydroxyethyl acrylate, tripropylene glycol diacrylate, trimethylolpropane tris vinylformic acid, light trigger, wetting dispersing agent and flow agent are added container successively, rotate dispersion 3-5 minute to evenly;
Step 2, while stirring by weight percentage anti-settling agent, filling powder are joined step one be uniformly dispersed after component in, rotate dispersion 15-20 minute to fineness≤60 μm, filter and obtain described ultraviolet curing transparent priming.
5. the preparation method of ultraviolet curing transparent priming as claimed in claim 4, is characterized in that, disperse in described step one with 500PRM rotating speed; Disperse with 1200PRM rotating speed in step 2.
6. a using method for ultraviolet curing transparent priming as claimed in claim 1, is characterized in that, comprises the following steps:
Step one, paste wooden skin ground;
Step 2, roller coat compound type transparent putty, glue spread 15 ~ 20g/ ㎡, carries out semicure;
Step 3, roller coat transparent priming, glue spread 15 ~ 20g/ ㎡, carries out semicure;
Ultraviolet curing transparent priming described in step 4, roller coat, glue spread 25 ~ 35g/ ㎡, carries out semicure;
Step 5, again ultraviolet curing transparent priming described in roller coat, glue spread 25 ~ 35g/ ㎡, carries out all solidstate;
Step 6,400 order abrasive bands are adopted to carry out sanding;
Step 7, roller coat or spray paint.
7. the using method of ultraviolet curing transparent priming as claimed in claim 6, is characterized in that, in described step 7, and roller coat or spraying UV finish paint, or spraying PU or PE finish paint.
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