CN103708740B - For glassy product and the leaching coating process thereof of automotive rear windshields - Google Patents
For glassy product and the leaching coating process thereof of automotive rear windshields Download PDFInfo
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- CN103708740B CN103708740B CN201310704497.0A CN201310704497A CN103708740B CN 103708740 B CN103708740 B CN 103708740B CN 201310704497 A CN201310704497 A CN 201310704497A CN 103708740 B CN103708740 B CN 103708740B
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Abstract
The present invention relates to a kind of glassy product for automotive rear windshields and leaching coating process thereof, comprise glass basis, the clear primer layer that described glass basis is formed by showering transparent priming and clear finish successively and transparent area enamelled coating.By the glassy product that preparation method of the present invention prepares, the firm adhesion of its clear coat and glass basis, and also described glassy product has excellent weather resistance, scratch resistance and wear resistance, is specially adapted to the glass sunroof of automobile.
Description
Technical field
The present invention relates to the technical field of auto-parts, in particular, the present invention relates to a kind of glassy product for automotive rear windshields and leaching coating process thereof.
Background technology
In order to improve the attractive in appearance of windshield glass or give better mechanical property, such as improve damage resistant, wear resistance etc. and be coated with functional coating in described windscreen surface, described functional coating is in the prior art usually by brushing, dip-coating, spin coating proceeding, but aforesaid method production efficiency is lower, and coating quality also has much room for improvement; In addition, also can coating functions coating by the method for vacuum plating, although the method coat-thickness is homogeneous, production efficiency is high, and its apparatus expensive, complicated operation, thus cost is higher.In addition, for the coating composition that the coating of transparent glass uses polysiloxane to be main component usually in prior art, but the weather resistance of this coating is poor, and coating thickness is lower easily breaks.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of glassy product for automotive rear windshields and preparation method thereof.
A first aspect of the present invention relates to a kind of glassy product for automotive rear windshields, comprises glass basis, it is characterized in that: the clear primer layer formed by showering transparent priming and clear finish successively on described glass basis and transparent area enamelled coating.
Wherein, described transparent priming and clear finish are solidified by UV.
Wherein, described transparent priming comprises isobornyl acrylate, TSIM, Phthalic acid, diallyl ester, diphenylmethanediisocyanate, light trigger and thinner.
Wherein, described transparent priming is made up of isobornyl acrylate, adjacent phenyl benzene ethoxy acrylate, TSIM, Phthalic acid, diallyl ester, diphenylmethanediisocyanate, N hydroxymethyl acrylamide, light trigger and thinner.
Wherein, described clear finish comprises diphenylmethanediisocyanate, bisphenol-a polycarbonate, Hydroxyethyl acrylate, vinyltrimethoxy silane, light trigger and thinner.
Wherein, described clear finish is made up of diphenylmethanediisocyanate, bisphenol-a polycarbonate, Hydroxyethyl acrylate, vinyltrimethoxy silane, ethoxylated bisphenol F diacrylate, bisphenol A diglycidyl ether, light trigger and thinner.
Wherein, described light trigger be selected from Diethyl Phenylphosphonite, benzophenone, Alpha-hydroxy isopropyl benzene ketone, Alpha-hydroxy phenylcyclohexyl ketone one or more.
Wherein, the thickness of described clear primer layer is 5 ~ 10 μm, and the thickness of described transparent area enamelled coating is 25 ~ 30 μm.
A second aspect of the present invention, also relates to a kind of preparation method of the glassy product for automotive rear windshields, it is characterized in that comprising the following steps of carrying out successively:
(1) glass substrate pre-treatment, carries out electrostatic precipitation and dehumidifying to glass substrate;
(2) by the showering of UV curing transparent priming to glass baseplate surface, the flow of described transparent priming is 3 ~ 6L/min;
(3) utilize UV-light that the transparent priming of glass baseplate surface is solidify to form clear primer layer;
(4) at the surperficial showering UV curing transparent finish paint of described clear primer layer, the flow of described clear finish is 8 ~ 10L/min;
(5) by the clear finish of showering levelling process 10 ~ 30min under the condition of 50 ~ 70 DEG C;
(6) utilize UV-light that clear finish is solidify to form transparent area enamelled coating.
Wherein, described ultraviolet wavelength is 250 ~ 300nm, and light quantity is 800 ~ 2000mj/cm
2.
Glassy product for automotive rear windshields of the present invention and preparation method thereof compared with prior art, has following beneficial effect:
By the glassy product that preparation method of the present invention prepares, the firm adhesion of its clear coat and glass basis, and also described glassy product has excellent weather resistance, scratch resistance and wear resistance, is specially adapted to the glass sunroof of automobile.
Embodiment
Below with reference to specific embodiment, the glassy product of automotive rear windshields of the present invention and leaching coating process thereof are described in further detail.
In the present invention, described transparent priming comprises isobornyl acrylate, the TSIM of 3.0 ~ 5.0wt%, the Phthalic acid, diallyl ester of 7.5 ~ 10.2wt%, the diphenylmethanediisocyanate of 12 ~ 15wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% of 25 ~ 35wt%, and the ethyl acetate of 22 ~ 40wt%.As preferably, described transparent priming is made up of the ethyl acetate of the N hydroxymethyl acrylamide of the diphenylmethanediisocyanate of the Phthalic acid, diallyl ester of the TSIM of the adjacent phenyl benzene ethoxy acrylate of the isobornyl acrylate of 25 ~ 30wt%, 2.5 ~ 3.5wt%, 3.2 ~ 4.0wt%, 7.5 ~ 10.2wt%, 12 ~ 15wt%, 2.1 ~ 3.5wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% and 22 ~ 40wt%.
In the present invention, described clear finish comprises the ethyl acetate of the diphenylmethanediisocyanate of 18 ~ 22wt%, the bisphenol-a polycarbonate of 10 ~ 12wt%, the Hydroxyethyl acrylate of 8 ~ 10wt%, the vinyltrimethoxy silane of 5.0 ~ 7.2wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% and 22 ~ 40wt%.As preferably, described clear finish is made up of the ethyl acetate of the bisphenol A diglycidyl ether of the ethoxylated bisphenol F diacrylate of the vinyltrimethoxy silane of the Hydroxyethyl acrylate of the bisphenol-a polycarbonate of the diphenylmethanediisocyanate of 18 ~ 22wt%, 10 ~ 12wt%, 8 ~ 10wt%, 5.0 ~ 7.2wt%, 3.8 ~ 5.0wt%, 1.2 ~ 1.5wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% and surplus.
Wherein, described light trigger be selected from Diethyl Phenylphosphonite, benzophenone, Alpha-hydroxy isopropyl benzene ketone, Alpha-hydroxy phenylcyclohexyl ketone one or more.
The preparation method of the described glassy product for automotive rear windshields, is characterized in that comprising the following steps of carrying out successively:
(1) glass substrate pre-treatment, carries out electrostatic precipitation and dehumidifying to glass substrate;
(2) by the showering of UV curing transparent priming to glass baseplate surface, the flow of described transparent priming is 3 ~ 6L/min;
(3) utilize UV-light that the transparent priming of glass baseplate surface is solidify to form clear primer layer;
(4) at the surperficial showering UV curing transparent finish paint of described clear primer layer, the flow of described clear finish is 8 ~ 10L/min;
(5) by the clear finish of showering levelling process 10 ~ 30min under the condition of 50 ~ 70 DEG C;
(6) utilize UV-light that clear finish is solidify to form transparent area enamelled coating.
Wherein, described ultraviolet wavelength is 250 ~ 300nm, and light quantity is 800 ~ 2000mj/cm
2.
Embodiment 1
The transparent priming described in the present embodiment is obtained by the ethyl acetate mixing the isobornyl acrylate of 25wt%, the TSIM of 5.0wt%, the Phthalic acid, diallyl ester of 10.2wt%, the diphenylmethanediisocyanate of 12wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 18wt% and 27.8wt%.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 5L/min; Utilize ultraviolet curing process, described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 2
The transparent priming described in the present embodiment is obtained by the ethyl acetate mixing the isobornyl acrylate of 35wt%, the TSIM of 3.0wt%, the Phthalic acid, diallyl ester of 7.5wt%, the diphenylmethanediisocyanate of 15wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15wt% and 22.5wt%.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is that 5L/min utilizes ultraviolet curing process, and described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 3
The transparent priming described in the present embodiment is obtained by the ethyl acetate mixing the isobornyl acrylate of 30wt%, the TSIM of 4.2wt%, the Phthalic acid, diallyl ester of 8.8wt%, the diphenylmethanediisocyanate of 13.5wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15wt% and 26.5wt%.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 5L/min; Utilize ultraviolet curing process, described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 4
The transparent priming described in the present embodiment is obtained by the ethyl acetate mixing the isobornyl acrylate of 27.8wt%, the adjacent phenyl benzene ethoxy acrylate of 3.0wt%, the TSIM of 3.5wt%, the Phthalic acid, diallyl ester of 8.8wt%, the diphenylmethanediisocyanate of 13.5wt%, the N hydroxymethyl acrylamide of 2.8wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15.0wt% and 23.6wt%.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 5L/min; Utilize ultraviolet curing process, described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Comparative example 1
Transparent priming is obtained by the ethyl acetate mixing the isobornyl acrylate of 27.8wt%, the adjacent phenyl benzene ethoxy acrylate of 3.0wt%, the TSIM of 3.5wt%, the Phthalic acid, diallyl ester of 8.8wt%, the diphenylmethanediisocyanate of 13.5wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15.0wt% and surplus.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 5L/min; Utilize ultraviolet curing process, described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Comparative example 2
Transparent priming is obtained by the ethyl acetate mixing the isobornyl acrylate of 27.8wt%, the adjacent phenyl benzene ethoxy acrylate of 3.0wt%, the Phthalic acid, diallyl ester of 8.8wt%, the diphenylmethanediisocyanate of 13.5wt%, the N hydroxymethyl acrylamide of 2.8wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15.0wt% and surplus.Showering and UV curing process as follows: glass substrate is put into air raining chamber, drifting dust 30 seconds; Be positioned over dust platform after taking-up, use electrostatic precipitation rifle to destatic drifting dust 30 seconds to product; Then glass substrate is positioned in production line body frock and stablizes, without rocking and offseting; Glass substrate is processed 30 minutes through dehumidifying district under 40 DEG C of conditions; Afterwards warp body automatically destatic wind drum carry out destaticing drifting dust 30 seconds; Utilize robot to carry out showering to glass substrate, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 5L/min; Utilize ultraviolet curing process, described ultraviolet wavelength is 300nm, and light quantity is 1000mj/cm
2after solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Sticking power (testing standard ENISO2409) test result is as shown in table 1.
table 1
| Sample | Sticking power, level |
| Embodiment 1 | 1 |
| Embodiment 2 | 1 |
| Embodiment 3 | 1 |
| Embodiment 4 | 0 |
| Comparative example 1 | 1 |
| Comparative example 2 | 1 |
Embodiment 5
The surface being formed with clear primer layer described in embodiment 1 forms transparent area enamelled coating.In the present embodiment, described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 18wt%, the bisphenol-a polycarbonate of 12wt%, the Hydroxyethyl acrylate of 10wt%, the vinyltrimethoxy silane of 5.0wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 18wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 6
The surface being formed with clear primer layer described in embodiment 2 forms transparent area enamelled coating.In the present embodiment, described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 22wt%, the bisphenol-a polycarbonate of 10wt%, the Hydroxyethyl acrylate of 8wt%, the vinyltrimethoxy silane of 7.2wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 15wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2after solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 7
The surface being formed with clear primer layer described in embodiment 3 forms transparent area enamelled coating.In the present embodiment, described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 20wt%, the bisphenol-a polycarbonate of 11wt%, the Hydroxyethyl acrylate of 9wt%, the vinyltrimethoxy silane of 6.2wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 16wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 8
The surface being formed with clear primer layer described in embodiment 3 forms transparent area enamelled coating.In the present embodiment, described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 20wt%, the bisphenol-a polycarbonate of 11wt%, the Hydroxyethyl acrylate of 9wt%, the vinyltrimethoxy silane of 6.2wt%, the ethoxylated bisphenol F diacrylate of 4.2wt%, the bisphenol A diglycidyl ether of 1.5wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 16wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Embodiment 9
The surface being formed with clear primer layer described in embodiment 4 forms transparent area enamelled coating.In the present embodiment, described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 20wt%, the bisphenol-a polycarbonate of 11wt%, the Hydroxyethyl acrylate of 9wt%, the vinyltrimethoxy silane of 6.2wt%, the ethoxylated bisphenol F diacrylate of 4.2wt%, the bisphenol A diglycidyl ether of 1.5wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 16wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Comparative example 3
The surface being formed with clear primer layer described in embodiment 4 forms transparent area enamelled coating.Described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 20wt%, the bisphenol-a polycarbonate of 11wt%, the Hydroxyethyl acrylate of 9wt%, the vinyltrimethoxy silane of 6.2wt%, the ethoxylated bisphenol F diacrylate of 4.2wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 16wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
Comparative example 4
The surface being formed with clear primer layer described in embodiment 4 forms transparent area enamelled coating.Described clear finish is prepared by the ethyl acetate mixing the diphenylmethanediisocyanate of 20wt%, the bisphenol-a polycarbonate of 11wt%, the Hydroxyethyl acrylate of 9wt%, the vinyltrimethoxy silane of 6.2wt%, the bisphenol A diglycidyl ether of 1.5wt%, the benzophenone of 2.0wt%, the dimethylbenzene of 16wt% and surplus.Utilize robot to carry out showering on clear primer layer surface, angle inclination angle is 45 ~ 75 degree, and paint can not have splashing, and flow is 10L/min; Then levelling process 20min under the condition of 60 DEG C; Utilize ultraviolet curing process, described ultraviolet wavelength is 250nm, and light quantity is 1500mj/cm
2; After solidification, under the condition of 20 DEG C, cool 30 minutes in cooling zone.
scratch performance:
The 502 type TaberShear/ScratchTester that the diamond stylus overlapped with 90 ° of angles with 0.003 inch of sphere head is housed are used to measure the scuffing performance of each test sample.The surface of contact pilotage and tested coat film is positioned on the arm of testing apparatus at an angle of 90.Film sample is positioned horizontally on the dish of testing apparatus, and coated side is upwards to accept contact pilotage.By given weight being applied on arm along arm slip weight to mark position.The arm reducing band contact pilotage contacts with coat film, and rotates the dish with coat film with the speed of 0.5 inch per second.Then check any scuffing in contact pilotage path, and measure the width of any visible scuffing.Contact pilotage arm use different weights repeat this process.Record visibility degree and actual scratch width after, to remain in the stove of 70 DEG C heated sample 30 minutes to determine the impact on scratching visibility and width.
wear resistance
Use the TaberAbrasion test evaluation wear resistance of ANSIZ-26.1 definition, it is with CS-10F abrader wheel abrasion sample surfaces 100 turns under 500 grammes per square metre things.The turbidity measuring transparent sample in abrasion district increases, and is expressed as Taber turbidity %.Coated side is denuded the sample of clear-coated, and measures Taber turbidity, then heating and remain in the stove of 70 DEG C keep 30 minutes.Taber turbidity is again measured, to determine whether heating eliminates polishing scratch after taking out from stove.
The scuffing performance of embodiment 5-9 and comparative example 3-4 gained glassy product and the result of wearability test, as shown in table 2.
Table 2
In table 2, scratch state and refer to and scratch the scuffing state after performance test, initial state refers to the turbidity of product surface before wearability test; Scratch width
1be the width after utilizing the contact pilotage of 20 grammes per square metres to scratch, scratch width
2be the width after utilizing the contact pilotage of 50 grammes per square metres to scratch, scratch width
3it is the width after utilizing the contact pilotage of 100 grammes per square metres to scratch.
For the ordinary skill in the art; specific embodiment is just to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (7)
1. for a glassy product for automotive rear windshields, comprise glass basis, it is characterized in that: the clear primer layer formed by showering transparent priming and clear finish successively on described glass basis and transparent area enamelled coating; Described transparent priming and clear finish are solidified by UV, described transparent priming comprises isobornyl acrylate, the TSIM of 3.0 ~ 5.0wt%, the Phthalic acid, diallyl ester of 7.5 ~ 10.2wt%, the diphenylmethanediisocyanate of 12 ~ 15wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% of 25 ~ 35wt%, and the ethyl acetate of 22 ~ 40wt%.
2. glassy product according to claim 1, is characterized in that: described clear finish comprises the ethyl acetate of the diphenylmethanediisocyanate of 18 ~ 22wt%, the bisphenol-a polycarbonate of 10 ~ 12wt%, the Hydroxyethyl acrylate of 8 ~ 10wt%, the vinyltrimethoxy silane of 5.0 ~ 7.2wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% and 22 ~ 40wt%.
3. glassy product according to claim 2, is characterized in that: described clear finish is made up of the ethyl acetate of the bisphenol A diglycidyl ether of the ethoxylated bisphenol F diacrylate of the vinyltrimethoxy silane of the Hydroxyethyl acrylate of the bisphenol-a polycarbonate of the diphenylmethanediisocyanate of 18 ~ 22wt%, 10 ~ 12wt%, 8 ~ 10wt%, 5.0 ~ 7.2wt%, 3.8 ~ 5.0wt%, 1.2 ~ 1.5wt%, the light trigger of 1.5 ~ 2.5wt%, the dimethylbenzene of 12 ~ 18wt% and surplus.
4. the glassy product according to any one of claims 1 to 3, is characterized in that: described light trigger be selected from Diethyl Phenylphosphonite, benzophenone, Alpha-hydroxy isopropyl benzene ketone, Alpha-hydroxy phenylcyclohexyl ketone one or more.
5. glassy product according to claim 1, is characterized in that: the thickness of described clear primer layer is 5 ~ 10 μm, and the thickness of described transparent area enamelled coating is 25 ~ 30 μm.
6. the leaching coating process of the glassy product for automotive rear windshields described in any one of Claims 1 to 5, is characterized in that comprising the following steps of carrying out successively:
(1) glass substrate pre-treatment, carries out electrostatic precipitation and dehumidifying to glass substrate;
(2) by the showering of UV curing transparent priming to glass baseplate surface, the flow of described transparent priming is 3 ~ 6L/min;
(3) utilize UV-light that the transparent priming of glass baseplate surface is solidify to form clear primer layer;
(4) at the surperficial showering UV curing transparent finish paint of described clear primer layer, the flow of described clear finish is 8 ~ 10L/min;
(5) by the clear finish of showering levelling process 10 ~ 30min under the condition of 50 ~ 70 DEG C;
(6) utilize UV-light that clear finish is solidify to form transparent area enamelled coating.
7. leaching coating process according to claim 6, it is characterized in that described ultraviolet wavelength is 250 ~ 300nm, light quantity is 800 ~ 2000mJ/cm
2.
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