CN111515105B - UV hardening liquid used for surface UV hardening device - Google Patents

UV hardening liquid used for surface UV hardening device Download PDF

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Publication number
CN111515105B
CN111515105B CN202010288508.1A CN202010288508A CN111515105B CN 111515105 B CN111515105 B CN 111515105B CN 202010288508 A CN202010288508 A CN 202010288508A CN 111515105 B CN111515105 B CN 111515105B
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China
Prior art keywords
roller
hardening
transparent
sheet
film material
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CN202010288508.1A
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CN111515105A (en
Inventor
侯兴福
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GUANGDONG WANSHIJIE PLASTIC TECHNOLOGY CO LTD
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GUANGDONG WANSHIJIE PLASTIC TECHNOLOGY CO LTD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/14—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
    • B05C1/0882—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the distance between two rollers, e.g. between the coating roller and a backing roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/12—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being fed round the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field related to surface hardening, and provides a surface UV hardening device, which comprises a first box body, a soft roller, a transparent roller and a first UV lamp, wherein the first box body is used for containing UV hardening liquid; the transparent roller and the soft roller are closely arranged in parallel, and a gap for passing and extruding a sheet or film material is arranged between the transparent roller and the soft roller; the first box body is used for coating UV hardening liquid on the surface of one side of the sheet or film material passing through the roller surface of the soft roller, which is opposite to the soft roller; the rod surface of the transparent rod is made of a transparent material capable of passing ultraviolet rays; the first UV lamp is arranged inside the transparent stick; meanwhile, through adjusting the gap between the transparent roller and the rotating roller, the accuracy is improved, deviation is avoided, and the uniformity of the UV hardening liquid sprayed by the equipment is improved; in addition, the UV hardening liquid provided by the invention has good adhesion with a film or a sheet, and the problems of delamination, easiness in cracking, warping or deformation and the like under the conditions of high temperature and boiling are avoided.

Description

UV hardening liquid used for surface UV hardening device
Technical Field
The invention relates to the technical field related to surface hardening, in particular to a UV hardening liquid used for a surface UV hardening device.
Background
In the production and processing process of metal sheets, films or plastic sheets and film materials, some surfaces of the formed sheets or film materials are required to be hardened to meet the use requirements, and the common surface hardening treatment mode of the sheets or film is to harden the UV hardening liquid containing the corresponding solvent after ultraviolet irradiation, so that surface hardening equipment is required to treat the UV hardening liquid.
The existing solution is to finish the surface hardening treatment of the plastic extrusion sheet or film material by a hardening mechanism, but most of the existing solution can only be used for hardening treatment of the extrusion plastic sheet or film which is transparent material, but for opaque sheet or film and UV-containing transparent sheet or film (which is ultraviolet-resistant transparent material), ultraviolet rays of a UV lamp cannot pass through the sheet or film material, UV hardening liquid on the surface of the sheet or film cannot be irradiated to solidify the sheet or film, so that the purpose of surface hardening cannot be achieved, and in the using process of the general surface hardening equipment, the precision is lower, deviation is easy to occur when the clearance between a transparent roller and a rotating roller is regulated, the UV hardening liquid sprayed by the general surface hardening equipment is not uniform enough, and the problems of easy cracking, warping or deformation exist when the used UV hardening liquid and the film or sheet are delaminated under the conditions of high temperature and water boiling.
Disclosure of Invention
In order to overcome the defects of the prior art, a first aspect of the present invention provides a surface UV hardening device, comprising a first box body for containing UV hardening liquid, a soft roller, a transparent roller and a first UV lamp; the transparent roller and the soft roller are closely arranged in parallel, and a gap for passing and extruding a sheet or film material is arranged between the transparent roller and the soft roller; the first box body is used for coating UV hardening liquid on the surface of one side of the sheet or film material passing through the roller surface of the soft roller, which is opposite to the soft roller; the rod surface of the transparent rod is made of a transparent material capable of passing ultraviolet rays; the first UV lamp is arranged in the transparent stick, and the irradiation direction of the first UV lamp points to the surface of the sheet or film material coated on the transparent stick.
As a preferable technical scheme of the invention, the roller further comprises a first temperature control component arranged in the transparent roller and a second temperature control component arranged in the soft roller, wherein the first temperature control component and the second temperature control component are respectively used for controlling the temperatures of the transparent roller and the roller surface of the soft roller.
As a preferred embodiment of the present invention, the first temperature control means includes: a fluid conduit and a thermal conductor; the fluid pipeline is arranged in the transparent roller, and liquid for adjusting the temperature of the transparent roller is introduced into the fluid pipeline; the heat conductor is coated outside the fluid pipeline and is in contact with the inner roller surface of the transparent roller for heat conduction.
As a preferable technical scheme of the invention, the invention further comprises a gap adjusting mechanism connected with the soft roller and the transparent roller, and the gap adjusting mechanism is used for adjusting the gap between the soft roller and the two roller surfaces of the transparent roller.
As a preferred technical scheme of the invention, the novel worm gear box comprises a bottom plate, wherein side frames are arranged on two sides of the top end of the bottom plate, a mounting frame is arranged in the middle of the top end of the bottom plate, the upper part of the mounting frame is a first box body, a rotating roller is rotatably arranged in the middle of the mounting frame, the middle of two sides of the mounting frame is rotatably connected with two screw rods respectively through bearings, sleeves are rotatably arranged in the middle of the two screw rods respectively through bearings, the two sleeves are rotatably connected with two ends of a transparent roller respectively through bearings, worm gears are arranged at one ends of the two screw rods, strip-shaped plates are arranged at two sides of one side frame, the two strip-shaped plates are rotatably connected with two ends of a worm respectively, the middle of the worm is meshed with the two worm gears, and a driven bevel gear is arranged at one end of the worm.
As a preferable technical scheme of the invention, the driven bevel gear is connected with the drive bevel gear in a meshed manner, the drive bevel gear is arranged at one end of the rotating shaft, and the rotating shaft is rotatably arranged in the middle of one side frame.
As a preferred technical solution of the present invention, the present invention further includes: the second UV lamp comprises a release film transmission mechanism, a second box body and a second UV lamp; the release film conveying mechanism is used for conveying a release film along a conveying path of the sheet or film material on the soft roller and the transparent roller, and the release film is in fit contact with the surface of one side of the sheet or film material, which is in contact with the soft roller; the second box body is used for containing UV hardening liquid, and the second box body coats the UV hardening liquid on the surface of the side, which is opposite to the soft roller, of the release film passing through the soft roller; the second UV lamp is arranged outside the transparent roller, and the irradiation direction of the second UV lamp is directed to the surface of the release film coated on the roller surface of the transparent roller.
A second aspect of the present invention provides a surface hardening apparatus for a sheet or film material, comprising an unreeling device for placing a rolled sheet or film material, a traction device for drawing the sheet or film material for transport, and a protective film compounding device for attaching protective films to both surfaces of the sheet or film material, further comprising: the surface hardening device and the secondary UV lamp curing device are arranged between the unreeling device and the traction device, and the protective film compounding device is arranged between the surface hardening device and the traction device;
The secondary UV lamp solidifying device comprises a third UV lamp, a cooling roller and two guide rollers, wherein the cooling roller is arranged in close parallel, the cooling roller is positioned between the two guide rollers, the third UV lamp is positioned outside the cooling roller, and the irradiation direction of the third UV lamp is directed to the surface of a sheet or film material coated on the roller surface of the cooling roller; the secondary UV lamp curing device is positioned between the protective film compounding device and the traction device.
As a preferred technical solution of the present invention, the present invention further includes: the storage device is arranged between the unreeling device and the surface hardening device and comprises a fixed row roller and a movable row roller which are arranged oppositely and can move relatively, the fixed row roller and the movable row roller are both provided with a plurality of rollers, and the sheet or film material is alternately wound on the rollers of the fixed row roller and the movable row roller.
The third aspect of the invention provides a sheet or film material production line, which sequentially comprises plastic sheet or film material forming equipment, the surface hardening device, a protective film compounding device, a secondary UV lamp curing device, a traction device, a winding device and a slicing machine along the transmission direction of the production line.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1: schematic structural diagram of a surface UV hardening device provided in example 1;
fig. 2: example 3 provides a schematic structural diagram of a surface UV hardening device;
fig. 3: a schematic structural view of a transparent roller of a surface UV hardening apparatus provided in example 2;
fig. 4: the transparent roller of FIG. 3 is a side cross-sectional view;
fig. 5: schematic of the connection of the surface hardening apparatus provided in example 4;
fig. 6: the schematic structure of a storage device of the surface hardening device provided in embodiment 4;
fig. 7: a schematic structural diagram of a secondary UV lamp hardening apparatus of the surface hardening apparatus provided in example 4;
fig. 8: a schematic view of the structure of the surface UV hardening device provided in example 5;
fig. 9: a schematic view of a worm installation structure of a surface UV hardening apparatus provided in example 5;
fig. 10: a schematic view of the internal structure of a first tank of a surface UV hardening apparatus provided in example 5;
fig. 11: a schematic view of the UV lamp mounting structure of the surface UV hardening apparatus provided in example 5;
1-first box, 2-sheet or film material, 3-soft roller, 4-gap adjustment mechanism, 5-transparent roller, 6-first UV lamp, 7-second box, 8-release film transfer mechanism, 9-release film, 10-second UV lamp, 11-bearing, 12-first temperature control component, 121-fluid conduit, 122-heat conductor, 13-1-bottom plate, 13-2-side frame, 13-3-mounting bracket, 13-4-screw, 13-5-sleeve, 13-6-worm gear, 13-7-strip plate, 13-8-worm, 13-9-driven bevel gear, 13-10-drive bevel gear, 13-11-runner, 13-12-swing lever, 13-13-connecting rod, 13-14-telescoping spring, 13-15-cam;
01 is unreeling device, 02 is the conveying roller, 03 is the storage device, 031 is the removal row roller, 032 is the fixed row roller, 04 is the surface hardening device, 05 is the thickness gauge, 06 is the protection film composite device, 07 is the secondary UV lamp solidification device, 071 is the third UV lamp, 072 is the cooling roller, 073 is the deflector roll, 08 is the traction device, 09 coiling device, 010 is the slicer.
Detailed Description
The invention mainly provides a surface UV hardening device, which irradiates UV hardening liquid on the surface of a sheet or film to solidify the UV hardening liquid so as to achieve the purpose of hardening the surface, and simultaneously, the accuracy is improved, deviation is avoided and the uniformity of the UV hardening liquid sprayed out by equipment is improved by adjusting the gap between a transparent roller and a rotating roller; in addition, the UV hardening liquid provided by the invention has good adhesion with a film or a sheet, and the problems of delamination, easiness in cracking, warping or deformation and the like under the conditions of high temperature and boiling are avoided.
The first aspect of the invention provides a surface UV hardening device, which comprises a first box body 1 for containing UV hardening liquid, a soft roller 3, a transparent stick 5 and a first UV lamp 6; the transparent stick 5 is arranged in close parallel with the soft roll 3, and a gap for passing and extruding the sheet or film material 2 is arranged between the transparent stick 5 and the soft roll 3; the first box body 1 is used for coating a UV hardening liquid on the surface of one side of the sheet or film material 2 passing through the rod surface of the soft roller 3 and facing away from the soft roller 3; a transparent material for the stick surface of the transparent stick 5; the first UV lamp 6 is disposed inside the transparent stick 5, and the irradiation direction of the first UV lamp 6 is directed to the surface of the sheet or film material coated on the transparent stick 5.
The first box body 1 is used for containing UV hardening liquid; the soft roller 3 is a rubber roller or a polyurethane roller, the Shore hardness of the soft roller 3 is 10-99 degrees, more preferably 50-70 degrees, so that the surface of the sheet or film material 2 is not damaged when the soft roller 3 is in extrusion contact with the sheet or film material 2; the diameter of the soft roller 3 is 100mm to 1000mm, more preferably 200mm to 500mm, and the size is selected according to the actual situation, and is not limited to the numerical range listed in this example; the roll surface of the transparent roll 5 can be made of transparent ultraviolet-ray-capable materials such as glass, quartz, plastic and the like, and the transparent roll 5 has a hollow structure.
The working process and the working principle of the surface hardening device are as follows: the sheet or film material 2 passes through the roller surface of the soft roller 3, the first box 1 coats UV hardening liquid on the side surface of the sheet or film material 2, which is back to the soft roller 3, then the sheet or film material 2 passes through a gap between the soft roller 3 and the transparent roller 5, the sheet or film material 2 is extruded and flattened in the gap by the soft roller 3 and the transparent roller 5, the UV hardening liquid is uniformly coated, the side surface of the sheet or film material 2 coated with the UV hardening liquid is wound on the transparent roller 5 and contacted with the roller surface of the transparent roller 5, and when passing through the irradiation position of the first UV lamp 6, the light of the first UV lamp 6 directly irradiates the side surface of the sheet or film material 2 coated with the UV hardening liquid through the roller surface of the transparent roller 5, so that the UV hardening liquid is solidified, and the hardening treatment is completed. Whether the sheet or film material 2 is transparent or opaque, the first UV lamp 6 in the transparent roller 5 can directly irradiate the surface of the sheet or film material 2 in contact with the roller surface through the roller surface of the transparent roller 5, so that the UV hardening liquid on the surface is solidified, and no light is required to penetrate the sheet or film material 2; the UV hardening liquid of the surface hardening device does not need to be added with volatile solvents, so that the cost of the UV hardening liquid is reduced, the adverse effect on the environment is reduced, drying equipment is not needed for drying operation, electric energy is saved, and space occupation is also reduced.
Preferably, in one embodiment, the surface UV hardening device further includes a gap adjusting mechanism connecting the soft roller and the transparent roller, for adjusting a gap between two roller surfaces of the soft roller and the transparent roller; the gap adjusting mechanism 4 may specifically be a screw adjusting mechanism or a bevel gear adjusting mechanism of a rotating bracket connecting the soft roller 3 and the transparent roller 5. The screw thread adjusting mechanism is characterized in that a screw rod and a screw hole are respectively arranged on the two rotating brackets, and the two rotating brackets move on the screw rod through the rotation of the screw rod in the screw hole, so that the function of adjusting the size of a gap is realized. The principle is not limited to the configuration illustrated in the present embodiment, as long as the gap adjustment can be achieved.
In order to prevent the UV hardening liquid from leaking to the two ends from the gap between the soft roller 3 and the transparent roller 5, the two ends of the gap between the two rollers are provided with baffles, so that the UV hardening liquid is reserved in the space surrounded by the gap and the baffles and cannot leak to the two ends. Of course, no baffles may be provided, but unnecessary losses of UV hardening liquid may occur.
Preferably, in another embodiment, the surface UV hardening device further includes a bottom plate 13-1, side frames 13-2 are installed on two sides of the top end of the bottom plate, a mounting frame 13-3 is installed in the middle of the top end of the bottom plate, the upper portion of the mounting frame is a first box 1, the middle of the soft rod 3 is mounted on the middle of the mounting frame 13-3, two side middle portions of the mounting frame 13-3 are respectively and rotatably connected with two screw rods 13-4 through bearings, sleeves 13-5 are respectively and rotatably connected with two ends of the transparent roller 5 through bearings, worm gears 13-6 are respectively installed at one ends of the two screw rods 13-4, a strip-shaped plate 13-7 is installed at two side edges of one side frame 13-2, two strip-shaped plates are respectively and rotatably connected with two ends of the worm 13-8, the middle of the worm is meshed with the two worm gears 13-6, and one end of the worm 13-8 is provided with a driven bevel gear 13-9.
Preferably, the driven bevel gear 13-9 is engaged with the drive bevel gear 13-10, the drive bevel gear is mounted at one end of the rotating shaft, and the rotating shaft is rotatably mounted at the middle part of one of the side frames 13-2.
Preferably, the other end of the rotating shaft is provided with a rotating wheel 13-11, and the outer wall of the rotating wheel is carved with anti-skid grains.
Preferably, the inside of the first box body 1 is provided with swing rods 13-12 in an equidistant rotation mode, the swing rods 13-12 which are arranged in an equidistant mode are connected through connecting rods 13-13, and the bottom end of each swing rod is provided with a spray head.
Preferably, one side of one swing rod 13-12 is fixedly connected with the inner wall of one side of the box body through a telescopic spring 13-14, and the other side of the box body is rotatably provided with a cam 13-15.
In operation, through the cooperation of the driving bevel gear, the driven bevel gear, the worm, the screw rod and the like, the driving bevel gear drives the worm to rotate by driving the driven bevel gear, then the worm drives the two screw rods to rotate respectively by driving the two worm gears, and the two screw rods drive the transparent roller to move by driving the two sleeves;
Compared with the prior art, at work, through the cooperation use of cam, extension spring and pendulum rod etc. that set up, cooperation extension spring, cam drive pendulum rod make reciprocating motion, make the shower nozzle of its bottom swing evenly blowout with UV hardening liquid, make the surface of UV hardening liquid spraying sheet or membrane material, when transparent roller, its inside UV lamp sends out light and shines it, makes it harden to accomplish work, can avoid UV hardening liquid uneven distribution and reduce the qualification rate.
In one embodiment, the surface hardening device further comprises a first temperature control part 12 arranged inside the transparent stick and a second temperature control part arranged inside the soft roll 3, which are respectively used for controlling the temperature of the stick surfaces of the transparent stick and the soft roll. The purpose of accurately controlling the coating thickness of the UV hardening liquid on the sheet or film material 2 is achieved by changing the temperature of the roll surface and adjusting the gap between the transparent roll and the soft roll. The viscosity of the UV hardening liquid is dependent on the temperature, the higher the temperature, the lower the viscosity of the UV hardening liquid, the thinner the thickness, and vice versa.
As a preferred embodiment of the present invention, the first temperature control unit 12 includes: a fluid conduit 121 and a thermal conductor 122; a fluid pipe 121 is arranged inside the transparent roller 5, and liquid for adjusting the temperature of the transparent roller 5 is introduced into the fluid pipe 121; the heat conductor 122 is wrapped outside the fluid pipeline 121 and is in contact with the inner roller surface of the transparent roller 5 for heat conduction. The heat conductor 122 may be a semi-cylindrical structure, the fluid pipe 121 is inserted into the heat conductor 122, two ends of the fluid pipe 121 extend out of two side end surfaces of the transparent roller 5, two ends of the fluid pipe 121 are in liquid communication with the outside, and liquid with a specific temperature continuously flows in the fluid pipe 121, so that the temperature of the roller surface of the transparent roller 5 is kept constant.
In one embodiment, the two ends of the transparent roller 5 are sleeved in the bearing 11, and are rotatably connected with the rotating bracket through the bearing 11, the two ends of the first UV lamp 6 are fixed at the two ends of the transparent roller 5 in a sealing way, and the two ends of the fluid pipeline 121 of the first temperature control component 12 extend out of the two ends of the transparent roller 5. In this embodiment, the transparent roller 5 has a length of 300mm to 3000mm, preferably 1000mm to 2000mm, a roller surface thickness of 1mm to 200mm, preferably 20mm to 40mm, and an outer diameter of 100mm to 1000mm, preferably 300mm to 500mm. Of course, the specific dimensions are determined according to the actual situation, and are not limited to the numerical ranges listed in this embodiment, and are not specifically limited herein.
The structure of the second temperature control member may be the same as that of the first temperature control member 12, or may be a spiral pipe provided in the hollow soft roller 3, or a straight pipe inserted in the solid soft roller 3, and a fluid for adjusting temperature may be introduced into the inside of the hollow soft roller, and may be gas or liquid.
In one embodiment, the angle between the plane formed by the rotation axis of the soft roll 3 and the rotation axis of the transparent roll 5 and the horizontal plane is 0 ° to 90 °, so long as the first box 1 can perform the coating of the UV hardening liquid on the surface of the sheet or film material 2 on the soft roll 3, and perform extrusion leveling and UV light irradiation curing on the surface.
In one embodiment, the surface hardening device further comprises: a release film transport mechanism 8, a second housing 7, and a second UV lamp 10; a release film conveying mechanism 8 is used for conveying a release film 9 along a conveying path of the sheet or film material 2 on the soft roller 3 and the transparent roller 5, and the release film 9 is in abutting contact with one side surface of the sheet or film material 2, which is in contact with the soft roller 3; the second box body 7 is used for containing UV hardening liquid, and the second box body 7 coats the UV hardening liquid on the surface of the side, which is opposite to the soft roller 5, of the release film 9 passing through the soft roller 5; the second UV lamp 10 is disposed outside the transparent roller 5, and the irradiation direction of the second UV lamp 10 is directed to the surface of the release film coated on the roller surface of the transparent roller 5.
The working principle and the working process of the surface hardening device are as follows: the sheet or film material 2 is transported on the soft roller 3 and the transparent roller 5 while the release film 9 is also transported on the soft roller 3 and the transparent roller 5 by the release film transporting mechanism 8, and the transporting path of the release film 9 on the soft roller 3 and the transparent roller 5 is the same as the transporting path of the sheet or film material 2, more preferably in synchronization, while the first case 1 coats the sheet or film material 2 with the UV hardening liquid, the second case 7 coats the side surface of the release film 9 facing away from the soft roller 3 with the UV hardening liquid, and since the side surface of the release film 9 facing away from the soft roller 3 is in contact with the side surface of the sheet or film material 2 not coated with the UV hardening liquid, during the transporting process of the release film 9, the UV hardening liquid on the release film 9 is coated on the surface of the sheet or film material 2 contacting with the release film 9, and the UV hardening liquid on both side surfaces of the sheet or film material 2 is pressed and evenly coated on both side surfaces when passing through the gap between the soft roller 3 and the transparent roller 5, and the UV hardening liquid on the side surface of the second film 9 is irradiated on the surface of the release film 9 contacting the UV hardening film material 2, and the UV hardening liquid is simultaneously irradiated on the side surface of the release film 9 or the second film material 2 contacting with the UV hardening liquid on the side surface of the release film 9, and the surface of the UV hardening film 2 is simultaneously cured.
The release film 9 may be any one of a PE release film, a PET release film, an OPP release film, and a BOPET release film.
The surface hardening device provided by the invention can carry out surface hardening treatment on the transparent sheet or film material and the opaque sheet or film material, and the applicable transparent materials can be PVC, PET, PS, PETG, PC, PMMA, PCT, PCTG, GAG (PETG/PET/PETG composite material), PC/PMMA composite material, TPU and the like. The opaque material may be a metal sheet or film, a stainless steel sheet or film, an aluminum sheet or film.
A second aspect of the present invention provides a surface hardening apparatus for a sheet or film material, comprising an unreeling device 01, a surface hardening device 04, a thickness gauge 05, a protective film compounding device 06, a secondary UV lamp curing device 07, a traction device 08, a reeling device 09, and a microtome 010, which are sequentially arranged along the transport direction of the sheet or film material 2, as described in all the above embodiments.
Wherein a conveying roller 02 and a guide roller are arranged at proper positions among the devices; the unreeling device is used for placing rolled sheets or film materials 2, and the rolled sheets or film materials 2 are continuously conveyed under the traction of the traction device 08 and are correspondingly processed after passing through each device; the thickness gauge 05 is used for measuring the thickness of the sheet or film material 2 after the surface hardening treatment; the protective film compounding device 06 is used for laminating protective films on two surfaces of the sheet or film material 2, and mainly comprises an upper film releasing mechanism, a lower film releasing mechanism and an upper pressing roller and a lower pressing roller, wherein the protective films are respectively laminated and pressed on the two surfaces of the sheet or film material 2, so that the protective film compounding device plays roles of isolating air (in the curing process of a secondary UV lamp, UV hardening liquid cannot contact with the air) and preventing subsequent processing scratch and dirt; the secondary UV lamp curing device 07 comprises a third UV lamp 071 and a cooling roller 072 and two guide rollers 073 which are arranged in close proximity in parallel, wherein the cooling roller 072 is positioned between the two guide rollers 073, the third UV lamp 071 is positioned outside the cooling roller 072, and the irradiation direction of the third UV lamp 071 is directed to the surface of the sheet or film material 2 coated on the roller surface of the cooling roller 072, so as to enhance the curing effect, improve the adhesion and surface hardness of the UV hardening liquid, and improve the productivity. The cooling roller 072 is used for taking away the heat generated by the third UV lamp 071, the guide roller 073 is used for pressing the sheet or film material 2 on the roller surface of the cooling roller 072, so that the contact area between the sheet or film material and the cooling roller 072 is increased, and the cooling effect is improved; the winding device 09 and the slicer 010 are connected with the traction device 08 in parallel, and can perform winding operation or cutting operation.
It can be seen that the surface hardening apparatus of the present sheet or film material can surface-treat the sheet or film material 2 that has been rolled, the surface hardening apparatus can harden the one-side surface of the sheet or film material 2, and the surface hardening apparatus can harden both side surfaces of the sheet or film material 2.
In one embodiment, the surface hardening apparatus further comprises a storage device 03, the storage device 03 being arranged between the unreeling device 01 and the surface hardening device 04; the storage device 03 comprises a fixed row roller 032 and a movable row roller 031 which are arranged oppositely and can move relatively, wherein the fixed row roller 032 and the movable row roller 031 are respectively provided with a plurality of rollers, and the sheet or film material 2 is alternately wound on the rollers of the fixed row roller 032 and the movable row roller 031. Preferably, the fixed row roller 032 and the movable row roller 031 are disposed horizontally, the fixed row roller 032 is located below the movable row roller 031, and the movable row roller 031 can move up and down relative to the fixed row roller 032, and of course, the movable row roller 031 and the fixed row roller 032 can also be disposed vertically, so long as material storage can be achieved.
The effect of storage device 03 is that can advance the lapping piece or the membrane material 2 of unreeling device 01, carries out the storage before hardening, and when lapping piece or membrane material transmission on unreeling device 01 finishes, when needs to be changed new lapping piece or membrane material, in the in-process of continuing the material, can continue to use the material of storage device 03 in advance, after the material is continuing, carries out the storage again, makes hardening can go on incessantly, has improved machining efficiency.
The specific operation of the storage device 03 is as follows: when the material is stored, the movable row roller 031 moves upwards relative to the fixed row roller 032, and the movable row roller 032 and the fixed row roller are separated by a certain distance, and the sheet or film material 2 is stored in the material storage device 03 as the sheet or film material 2 is wound on the rollers of the fixed row roller 032 and the movable row roller 031 alternately up and down; when a new sheet or film material 2 needs to be replaced, in the process of connection, the movable row roller 031 is slowly moved downwards, and the distance between the movable row roller 031 and the fixed row roller 032 is reduced, so that the length of the sheet or film material wound on the movable row roller 031 and the fixed row roller 032 is shortened, the sheet or film material can be used for subsequent processing, and after connection is completed, the movable row roller 031 is moved upwards again, and material storage is continued. Of course, the storage device 03 may not be provided, and it is more preferable to provide the storage device 03.
A third aspect of the present invention provides a sheet or film material production line comprising a plastic sheet or film material forming apparatus, a surface hardening device 04, a thickness gauge 05, a protective film compounding device 06, a secondary UV lamp curing device 07, a traction device 08, a winding device 09, and a microtome 010, which are sequentially arranged in the conveying direction of the production line. The sheet or film production line can directly carry out on-line surface hardening treatment on the sheet or film material 2 produced on the plastic sheet or film material forming equipment, omits an intermediate coiling process, further improves the production efficiency, and can carry out surface hardening treatment on opaque plastics and transparent plastics containing UV.
The fourth aspect of the invention provides a UV hardening liquid used by the surface UV hardening device, which comprises, by weight, 5-10 parts of siloxane, 35-55 parts of acrylic resin and 1-3 parts of photoinitiator; preferably, the UV hardening liquid comprises 6-8 parts of siloxane, 42-49 parts of acrylic resin and 1.5-2.5 parts of photoinitiator in parts by weight; further preferably, the UV hardening liquid comprises 6.5 to 7.5 parts of siloxane, 44 to 47 parts of acrylic resin and 1.8 to 2.1 parts of photoinitiator in parts by weight; more preferably, the UV hardening liquid includes 7.2 parts of siloxane, 45 parts of acrylic resin, and 2 parts of photoinitiator in parts by weight.
The acrylic resin is a matrix material of the UV hardening liquid, is favorable for curing reaction under the action of a photoinitiator when the sheet or film material is subjected to UV irradiation, so that a required hardening layer is formed, and plays a role in protecting the sheet or film material; when the conventional acrylic resin polymer is used as a raw material before UV irradiation, there are cases where compatibility with other components in the system is a problem, and the resulting hardened layer may have defects such as cracks and warpage.
The acrylic resin is prepared from the following raw materials of acrylic monomers, polyisocyanate and epoxy resin; preferably, the weight ratio of acrylic monomer, polyisocyanate and epoxy resin is 1: (0.75-0.95): (0.25 to 0.45); further preferably, the weight ratio of acrylic monomer, polyisocyanate and epoxy resin is 1: (0.8-0.9): (0.3 to 0.4); more preferably, the weight ratio of acrylic monomer, polyisocyanate and epoxy resin is 1:0.85:0.35.
the acrylic monomer according to the present invention is a hydroxyl group-containing acrylic monomer, and the number of hydroxyl groups in the acrylic monomer is 1 or more, for example, but not limited to: pentaerythritol triacrylate, tris (2-hydroxyethyl) isocyanurate triacrylate, trimethylolpropane triacrylate, dipentaerythritol hexaacrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate, 2, 4-dihydroxypropyl methacrylate, 2, 3-dihydroxypropyl acrylate, hydroxypropyl methacrylate, and the like; preferably, the hydroxyl group-containing acrylic monomer includes hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate, trimethylolpropane triacrylate; further preferably, the weight ratio of hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate is 1: (3.6-5.5): (1.2-1.8); more preferably, the weight ratio of hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate is 1:4.6:1.5.
The type of the polyisocyanate is not particularly limited in the present invention, and may contain two or more NCO groups, for example, but not limited to: any one or a combination of a plurality of dicyclohexylmethane diisocyanate, diphenylmethane diisocyanate, terephthalylene diisocyanate, hexamethylene diisocyanate and isophorone diisocyanate.
In the preparation process of acrylic resin, the applicant finds that the monohydroxy acrylic monomer, the dihydroxyacrylic monomer and the trihydroxy acrylic monomer are added into the system to act together with polyisocyanate, namely the system contains hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate to form a three-dimensional network system, but the weight ratio of the hydroxyethyl methacrylate, the 2, 3-dihydroxypropyl acrylate and the trimethylolpropane triacrylate is controlled to be 1: (3.6-5.5): (1.2-1.8), the storage time of the hardening layer can be prolonged, the thickness of the hardening layer is also increased, otherwise, when the content of the trimethylolpropane triacrylate is more, the problem of cracking or warping easily occurs, and when the content of the hydroxyethyl methacrylate is more, the storage problem of the hardening layer under severe conditions cannot be well improved, probably because the content of the trimethylolpropane triacrylate is more, the photoinitiator is not uniformly distributed in a system in the UV irradiation process, uneven stress of the hardening layer is caused, cracking occurs, and when the content of the hydroxyethyl methacrylate is more, network gaps in the system are larger, and the blocking of oligomers and small molecules cannot play an effective role.
The epoxy resin is an epoxy resin material with the viscosity of 25, the viscosity of less than 600sps and the hydroxyl value of 170-220 g/eq, and specific buyers and models are not particularly limited; such as, but not limited to: YD-119, YD-112, YD-113, YD-114, YD-115J, etc.
The invention adopts the epoxy resin with low viscosity as the preparation raw material of the acrylic resin, can improve the compatibility of a reaction system, reduce the content of a solvent, ensure that the system keeps proper viscosity, and is beneficial to the dispersion and flow of substances in the reaction process, but the applicant also discovers that when the content of the epoxy resin is higher, the adhesive force of a hardening layer is reduced, and the delamination phenomenon can occur under the high-temperature or water boiling condition, probably because the chain length of the epoxy resin is obviously changed in the chemical reaction process, the change degree of cohesive force is larger, and the acting force between the epoxy resin and a sheet or film material is easy to reduce.
In the preparation process of the UV hardening liquid, other inorganic fillers such as silicon dioxide or aluminum oxide are often added to further improve the hardness and scratch resistance of the obtained UV hardening layer, but the problems of agglomeration, sinking and the like of the inorganic fillers such as the silicon dioxide are often caused in the actual operation process, and the inorganic fillers cannot be well dispersed in an organic phase system; preferably, the siloxane comprises gamma-methacryloxypropyl trimethoxysilane and gamma-aminopropyl triethoxysilane; further preferably, the molar ratio of gamma-methacryloxypropyl trimethoxysilane to gamma-aminopropyl triethoxysilane is 1: (0.85-1.15); more preferably, the molar ratio of gamma-methacryloxypropyl trimethoxysilane to gamma-aminopropyl triethoxysilane is 1:0.95.
The applicant finds that the siloxane containing double bonds and amino groups is adopted as the raw material of the acrylic resin in the application, so that the hardness of a hardened layer can be effectively improved, and meanwhile, the problems of cracking, deformation, warping and the like cannot occur, and possibly because the siloxane reacts with acrylate original text through amino groups to form a branched chain structure of the acrylic resin, the problem of uneven migration and dispersion of the siloxane in a system is avoided, meanwhile, the spreading and wettability of a UV hardening liquid on the surface of a sheet or film material are improved, the UV hardening liquid is further crosslinked with the acrylic resin system to form a network under the irradiation of UV in the later stage, the hardness of the hardened layer is improved through the dual effects of physics and chemistry, the dispersion is uniform, the occurrence of stress concentration is reduced, and therefore, the problems of cracking, deformation, warping and the like are avoided, and the high temperature resistance and the boiling resistance are also improved.
The photoinitiator is not particularly limited in the present invention, for example, but not limited to: any one or a combination of a plurality of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy methyl phenyl propane-1-ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholino-1-acetone, diphenyl ketone, 2-isopropyl thioxanthone, 2,4, 6-trimethyl benzoyl-diphenyl phosphine oxide, 2,4, 6-trimethyl benzoyl-ethoxy-phenyl phosphine oxide, bis (2, 4, 6-trimethyl benzoyl) phenyl phosphine oxide and 2-hydroxy-4- (2-hydroxyethoxy) -2-methyl propiophenone.
In one embodiment, the method for preparing the UV hardening liquid comprises the following steps:
(1) Adding acrylic monomers and epoxy resin into a solvent, wherein the solvent accounts for 15-25% of the total weight of the acrylic monomers and the epoxy resin, and uniformly stirring;
(2) Placing polyisocyanate and a catalyst in the system of the step (1), stirring, adding siloxane, and reacting for 6.5-9.5 h at 75-95 ℃;
(3) And (3) performing rotary evaporation on the value obtained in the step (2), and removing the solvent to obtain the required UV hardening liquid.
The kind of the solvent is not particularly limited, and examples thereof include ethanol, ethyl acetate, butanone, acetone, N-dimethylformamide, N-dimethylacetamide, N-methyl-2-pyrrolidone, and the like.
The catalyst is any one or a combination of a plurality of stannous octoate, dibutyl tin dilaurate, lead octoate, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate and tetraisobutyl titanate; the content of the acrylic monomer is 0.5 to 1.5 weight percent of the acrylic monomer; preferably 0.8 to 1.3wt%.
Example 1
Embodiment 1 of the present invention provides a surface UV hardening device, as shown in fig. 1, comprising a first box 1 for containing UV hardening liquid, a soft roller 3, a transparent stick 5, and a first UV lamp 6; the transparent roller 5 and the soft roller 3 are arranged in close parallel, and a gap for passing and extruding the film material 2 is arranged between the transparent roller 5 and the soft roller 3; the first box body 1 is used for coating UV hardening liquid on the surface of the film material 2 passing through the rod surface of the soft roller 3 and facing away from the soft roller 3; the rod surface of the transparent rod 5 is made of a transparent material capable of passing ultraviolet rays; the first UV lamp 6 is arranged inside the transparent stick 5, and the irradiation direction of the first UV lamp 6 points to the surface of the film material coated on the transparent stick 5; the first box body 1 is used for containing UV hardening liquid; the transparent roller 5 is of a hollow structure; the surface UV hardening device further comprises a gap adjusting mechanism connected with the soft roller and the transparent roller and used for adjusting a gap between two roller surfaces of the soft roller and the transparent roller; the gap adjusting mechanism 4 is a screw thread adjusting mechanism of a rotating bracket connected with the soft roller 3 and the transparent roller 5, wherein the screw thread adjusting mechanism is characterized in that a screw rod and a screw hole are respectively arranged on the two rotating brackets, and the two rotating brackets move on the screw rod through the rotation of the screw rod in the screw hole, so that the function of adjusting the gap is realized; the film material is PET, the transparent roller 5 is of a hollow structure and is made of glass; the diameter of the soft roller 3 is 300mm; the transparent roller 5 had a length of 1500mm, a roller surface thickness of 30mm and an outer diameter of 400mm.
Example 2
Embodiment 2 of the present invention provides a surface UV hardening device, as shown in fig. 3 and 4, including the device structure of embodiment 1, the embodiment further includes a first temperature control member 12 disposed inside the transparent roller and a second temperature control member disposed inside the soft roller 3, for controlling the temperatures of the transparent roller and the roller surface of the soft roller, respectively, and the first temperature control member 12 includes: a fluid conduit 121 and a thermal conductor 122; a fluid pipe 121 is arranged inside the transparent roller 5, and liquid for adjusting the temperature of the transparent roller 5 is introduced into the fluid pipe 121; the heat conductor 122 is wrapped outside the fluid pipeline 121 and is in contact with the inner roller surface of the transparent roller 5 for heat conduction. The heat conductor 122 may be a semi-cylindrical structure, the fluid pipe 121 is inserted in the heat conductor 122, two ends of the fluid pipe 121 extend out of two side end surfaces of the transparent roller 5, two ends of the fluid pipe 121 are in fluid communication with the outside, and fluid with a specific temperature continuously flows in the fluid pipe 121, so that the temperature of the roller surface of the transparent roller 5 is kept constant, two ends of the transparent roller 5 are sleeved in the bearing 11 and are rotationally connected with the rotating bracket through the bearing 11, two ends of the first UV lamp 6 are fixed at two ends of the transparent roller 5 in a sealing manner, and two ends of the fluid pipe 121 of the first temperature control part 12 extend out of two ends of the transparent roller 5;
The structure of the second temperature control part is the same as that of the first temperature control part 12; the angle between the plane formed by the rotation axis of the soft roller 3 and the rotation axis of the transparent roller 5 and the horizontal plane is 0 deg..
Example 3
Embodiment 3 of the present invention provides a surface UV hardening device according to embodiment 3 of the present invention, as shown in fig. 2, including the device structure in embodiment 2, and further including a release film conveying mechanism 8, a second case 7, and a second UV lamp 10; a release film conveying mechanism 8 is used for conveying a release film 9 along a conveying path of the sheet or film material 2 on the soft roller 3 and the transparent roller 5, and the release film 9 is in abutting contact with one side surface of the sheet or film material 2, which is in contact with the soft roller 3; the second box body 7 is used for containing UV hardening liquid, and the second box body 7 coats the UV hardening liquid on the surface of the side, which is opposite to the soft roller 5, of the release film 9 passing through the soft roller 5; the second UV lamp 10 is disposed outside the transparent roller 5, and the irradiation direction of the second UV lamp 10 is directed to the surface of the release film coated on the roller surface of the transparent roller 5, and the release film is a PET film.
Example 4
Embodiment 4 of the present invention provides a hardening apparatus, as shown in fig. 5 to 7, comprising an unreeling device 01, a surface hardening device 04 as described in embodiment 3, a thickness gauge 05, a protective film compounding device 06, a secondary UV lamp curing device 07, a traction device 08, a reeling device 09, and a microtome 010, which are sequentially arranged along the transport direction of a sheet or film material 2; a conveying roller 02 and a guide roller are arranged between the devices; the unreeling device is used for placing rolled sheets or film materials 2, and the rolled sheets or film materials 2 are continuously conveyed under the traction of the traction device 08 and are correspondingly processed after passing through each device; the thickness gauge 05 is used for measuring the thickness of the sheet or film material 2 after the surface hardening treatment; the protective film compounding device 06 is used for laminating protective films on two surfaces of the sheet or film material 2, and mainly comprises an upper film releasing mechanism, a lower film releasing mechanism, an upper pressing roller and a lower pressing roller, wherein the protective films are respectively laminated and pressed on the two surfaces of the sheet or film material 2, so that the protective film compounding device plays a role in isolating air and preventing subsequent processing from being scratched and stained; the secondary UV lamp curing apparatus 07 includes a third UV lamp 071 and a cooling roller 072 and two guide rollers 073 which are closely arranged in parallel, as shown in fig. 8, the cooling roller 072 is located between the two guide rollers 073, the third UV lamp 071 is located outside the cooling roller 072, and the irradiation direction of the third UV lamp is directed to the surface of the sheet or film material 2 coated on the roller surface of the cooling roller 072, so as to enhance the curing effect, improve the adhesion and surface hardness of the UV hardening liquid, and improve the productivity. The cooling roller 072 is used for taking away the heat generated by the third UV lamp 071, the guide roller 073 is used for pressing the sheet or film material 2 on the roller surface of the cooling roller 072, so that the contact area between the sheet or film material and the cooling roller 072 is increased, and the cooling effect is improved; the winding device 09 and the slicer 010 are connected with the traction device 08 in parallel, and can perform winding operation or cutting operation;
The surface hardening equipment also comprises a storage device 03, wherein the storage device 03 is arranged between the unreeling device 01 and the surface hardening device 04; the storage device 03 comprises a fixed row roller 032 and a movable row roller 031 which are arranged oppositely and can move relatively, wherein the fixed row roller 032 and the movable row roller 031 are respectively provided with a plurality of rollers, and the sheet or film material 2 is alternately wound on the rollers of the fixed row roller 032 and the movable row roller 031. Preferably, the fixed row roller 032 and the movable row roller 031 are disposed horizontally, and the fixed row roller 032 is located below the movable row roller 031, and the movable row roller 031 can move up and down relative to the fixed row roller 032.
Example 5
Embodiment 5 of the present invention provides a surface UV hardening device, comprising a first box 1 for containing UV hardening liquid, a soft roller 3, a transparent stick 5, and a first UV lamp 6; the transparent roller 5 and the soft roller 3 are arranged in close parallel; a first UV lamp 6 is arranged inside the transparent stick 5;
the surface UV hardening device further comprises a bottom plate 13-1, side frames 13-2 are arranged on two sides of the top end of the bottom plate, a mounting frame 13-3 is arranged in the middle of the top end of the bottom plate, the upper part of the mounting frame is a first box body 1, the middle of the soft rod 3 mounting frame 13-3 is rotatably connected with two screw rods 13-4 through bearings respectively, sleeves 13-5 are arranged in the middle of the two screw rods 13-4 in a threaded manner, the two sleeves 13-5 are rotatably connected with two ends of a transparent roller 5 through bearings respectively, worm gears 13-6 are arranged at one ends of the two screw rods 13-4, strip-shaped plates 13-7 are arranged on two sides of one side frame 13-2, the two strip-shaped plates are rotatably connected with two ends of a worm 13-8 respectively, the middle of the worm is in meshed connection with the two worm gears 13-6, and one end of the worm 13-8 is provided with a driven bevel gear 13-9;
The driven bevel gear 13-9 is in meshed connection with the drive bevel gear 13-10, the drive bevel gear is arranged at one end of a rotating shaft, and the rotating shaft is rotatably arranged in the middle of one side frame 13-2; the other end of the rotating shaft is provided with a rotating wheel 13-11, and the outer wall of the rotating wheel is carved with anti-skid grains; the inside of the first box body 1 is provided with swing rods 13-12 in an equidistant rotation mode, the swing rods 13-12 which are arranged in an equidistant mode are connected through connecting rods 13-13, and the bottom end of each swing rod is provided with a spray head; one side of one swing rod 13-12 is fixedly connected with the inner wall of one side of the box body through a telescopic spring 13-14, and a cam 13-15 is rotatably arranged on the other side of the box body.
Example 6
Example 6 of the present invention provides a UV hardening liquid comprising, in parts by weight, 5.2 parts of siloxane, 35 parts of acrylic resin, and 1 part of photoinitiator; the photoinitiator is 2-hydroxy methyl phenyl propane-1-ketone;
the raw materials for preparing the acrylic resin comprise acrylic monomers, polyisocyanate and epoxy resin, wherein the weight ratio of the acrylic monomers to the polyisocyanate to the epoxy resin is 1:0.75:0.25; the polyisocyanate is diphenylmethane diisocyanate; the epoxy resin is YD-115J;
The acrylic monomer comprises hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate, and the weight ratio of the hydroxyethyl methacrylate to the 2, 3-dihydroxypropyl acrylate to the trimethylolpropane triacrylate is 1:3.6:1.2;
the siloxane comprises gamma-methacryloxypropyl trimethoxysilane and gamma-aminopropyl triethoxysilane, and the molar ratio of the gamma-methacryloxypropyl trimethoxysilane to the gamma-aminopropyl triethoxysilane is 1:0.85;
the preparation method of the UV hardening liquid comprises the following steps:
(1) Adding an acrylic monomer and epoxy resin into a solvent, wherein the solvent accounts for 20 percent of the total weight of the acrylic monomer and the epoxy resin, and uniformly stirring; the solvent is N, N-dimethylformamide;
(2) Placing polyisocyanate and a catalyst in the system of the step (1), stirring, adding siloxane, and reacting for 8.5 hours at 85 ℃; the catalyst is dibutyl tin dilaurate, and the content of the dibutyl tin dilaurate is 1.2 weight percent of the acrylic monomer;
(3) And (3) performing rotary evaporation on the value obtained in the step (2), and removing the solvent to obtain the required UV hardening liquid.
Example 7
Example 7 of the present invention provides a UV hardening liquid comprising, in parts by weight, 9.8 parts of siloxane, 55 parts of acrylic resin, and 3 parts of photoinitiator; the photoinitiator is 2-hydroxy methyl phenyl propane-1-ketone;
The raw materials for preparing the acrylic resin comprise acrylic monomers, polyisocyanate and epoxy resin, wherein the weight ratio of the acrylic monomers to the polyisocyanate to the epoxy resin is 1:0.95:0.45; the polyisocyanate is diphenylmethane diisocyanate; the epoxy resin is YD-115J;
the acrylic monomer comprises hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate, and the weight ratio of the hydroxyethyl methacrylate to the 2, 3-dihydroxypropyl acrylate to the trimethylolpropane triacrylate is 1:5.5:1.8;
the siloxane comprises gamma-methacryloxypropyl trimethoxysilane and gamma-aminopropyl triethoxysilane, and the molar ratio of the gamma-methacryloxypropyl trimethoxysilane to the gamma-aminopropyl triethoxysilane is 1:1.15;
the preparation method of the UV hardening liquid comprises the following steps:
(1) Adding an acrylic monomer and epoxy resin into a solvent, wherein the solvent accounts for 20 percent of the total weight of the acrylic monomer and the epoxy resin, and uniformly stirring; the solvent is N, N-dimethylformamide;
(2) Placing polyisocyanate and a catalyst in the system of the step (1), stirring, adding siloxane, and reacting for 8.5 hours at 85 ℃; the catalyst is dibutyl tin dilaurate, and the content of the dibutyl tin dilaurate is 1.2 weight percent of the acrylic monomer;
(3) And (3) performing rotary evaporation on the value obtained in the step (2), and removing the solvent to obtain the required UV hardening liquid.
Example 8
Example 8 of the present invention provides a UV hardening liquid comprising, in parts by weight, 7.2 parts of siloxane, 45 parts of acrylic resin, and 2 parts of photoinitiator; the photoinitiator is 2-hydroxy methyl phenyl propane-1-ketone;
the raw materials for preparing the acrylic resin comprise acrylic monomers, polyisocyanate and epoxy resin, wherein the weight ratio of the acrylic monomers to the polyisocyanate to the epoxy resin is 1:0.85:0.35; the polyisocyanate is diphenylmethane diisocyanate; the epoxy resin is YD-115J;
the acrylic monomer comprises hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate, and the weight ratio of the hydroxyethyl methacrylate to the 2, 3-dihydroxypropyl acrylate to the trimethylolpropane triacrylate is 1:4.6:1.8;
the siloxane comprises gamma-methacryloxypropyl trimethoxysilane and gamma-aminopropyl triethoxysilane, and the molar ratio of the gamma-methacryloxypropyl trimethoxysilane to the gamma-aminopropyl triethoxysilane is 1: (0.85-1.15);
The preparation method of the UV hardening liquid comprises the following steps:
(1) Adding an acrylic monomer and epoxy resin into a solvent, wherein the solvent accounts for 20 percent of the total weight of the acrylic monomer and the epoxy resin, and uniformly stirring; the solvent is N, N-dimethylformamide;
(2) Placing polyisocyanate and a catalyst in the system of the step (1), stirring, adding siloxane, and reacting for 8.5 hours at 85 ℃; the catalyst is dibutyl tin dilaurate, and the content of the dibutyl tin dilaurate is 1.2 weight percent of the acrylic monomer;
(3) And (3) performing rotary evaporation on the value obtained in the step (2), and removing the solvent to obtain the required UV hardening liquid.
Example 9
Example 9 of the present invention provides a UV hardening liquid, which is different from example 3 in that the siloxane content is 0.
Example 10
Example 10 of the present invention provides a UV hardening liquid, which is different from example 3 in that the content of γ -methacryloxypropyl trimethoxysilane is 0.
Example 11
Example 11 of the present invention provides a UV hardening liquid, which is different from example 3 in that the content of γ -aminopropyl triethoxysilane is 0.
Example 12
Example 12 of the present invention provides a UV hardening liquid, which is different from example 3 in that the epoxy resin content is 0.
Example 13
Example 13 of the present invention provides a UV hardening liquid, and its specific embodiment is the same as example 3, except that the epoxy resin is YD-011X70.
Example 14
Example 14 of the present invention provides a UV hardening liquid, the specific embodiment of which is the same as example 3, except that the weight ratio of acrylic monomer, polyisocyanate and epoxy resin is 1:0.85:1.
example 15
Example 15 of the present invention provides a UV hardening liquid, which is different from example 3 in that the content of 2, 3-dihydroxypropyl acrylate is 0.
Example 16
Example 16 of the present invention provides a UV hardening liquid, the specific embodiment of which is the same as example 3, wherein the weight ratio of hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate, trimethylolpropane triacrylate is 1:4.6:3.
example 17
Example 17 of the present invention provides a UV hardening liquid, which is different from example 3 in that trimethylolpropane triacrylate content is 0.
Performance evaluation
The sheet or film material was PMMA, and the film material was surface-treated with the UV hardening liquids obtained in examples 6 to 17, respectively, using the surface hardening apparatus shown in fig. 1, and the following performance tests were performed on the obtained material:
1. adhesion test: testing with the method of BTF-122 using the hundred grid method;
2. hardness testing: the test was conducted with reference to the method of BTF-122, and the hardness grade at 750gf was recorded;
3. boiling resistance: soaking at 60deg.C for 5 hr, and observing whether there is falling phenomenon; 100 samples were each, and the water-resistant boiling rating was evaluated by: a: the number of falling off is 0 to 3; the number of falling-off occurrence of B is 4-15; c: the number of falling off is 16-30; d: the number of falling-off is 31-45; e: the number of falling off is more than or equal to 46;
4. storage stability: placing the obtained material at 100 ℃ for 72 hours, and observing whether cracking, warping or deformation occurs, wherein the grade evaluation method of the storage stability is as follows: a: the number of the problems is 0 to 3; b, the number of the problems is 4-15; c: the number of the problems is 16-30; d: the number of the problems is 31 to 45; e: the number of the problems is 46 or more.
TABLE 1
Adhesion force Hardness of Boiling resistance Storage stability
Example 6 5B 5H A A
Example 7 5B 5H A A
Example 8 5B 5H A A
Example 9 \ 3H \ \
Example 10 \ 4H B B
Example 11 \ 4H B B
Example 12 4B 2H C C
Example 13 \ \ \ B
Example 14 4B \ C \
Example 15 \ \ C C
Example 16 \ \ B B
Example 17 4B 3H C B
The foregoing examples are illustrative only and serve to explain some features of the method of the invention. The appended claims are intended to claim the broadest possible scope and the embodiments presented herein are merely illustrative of selected implementations based on combinations of all possible embodiments. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the invention. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges should also be construed as being covered by the appended claims where possible.

Claims (1)

1. The UV hardening liquid used by the surface UV hardening device comprises, by weight, 6.5-7.5 parts of siloxane, 44-47 parts of acrylic resin and 1.8-2.1 parts of photoinitiator;
the raw materials for preparing the acrylic resin comprise acrylic monomers, polyisocyanate and epoxy resin in a weight ratio of 1: (0.75-0.95): (0.25 to 0.45);
The acrylic monomer is an acrylic monomer containing hydroxyl; the hydroxyl-containing acrylic monomer comprises hydroxyethyl methacrylate, 2, 3-dihydroxypropyl acrylate and trimethylolpropane triacrylate, and the weight ratio is 1: (3.6-5.5): (1.2-1.8);
the epoxy resin is YD-115J;
the siloxane comprises gamma-methacryloxypropyl trimethoxysilane and gamma-aminopropyl triethoxysilane, and the molar ratio is 1: (0.85-1.15).
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203637203U (en) * 2013-11-13 2014-06-11 侯兴福 Double-sided hardening device for unconvoluted plastic extrusion boards or pieces
CN203637204U (en) * 2013-11-13 2014-06-11 侯兴福 Double-sided hardening device for convoluted plastic extrusion boards, pieces or films
CN104875403A (en) * 2015-06-17 2015-09-02 侯兴福 Piece or film material production line and surface hardening device thereof
CN106896424A (en) * 2015-12-17 2017-06-27 宁波惠之星新材料科技有限公司 A kind of solvent-free UV impressings cured film, a kind of equipment for preparing cured film and preparation method thereof
CN107457141A (en) * 2017-09-18 2017-12-12 陕西浩合机械有限责任公司 A kind of device in metal foil surface coating graphene

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203637203U (en) * 2013-11-13 2014-06-11 侯兴福 Double-sided hardening device for unconvoluted plastic extrusion boards or pieces
CN203637204U (en) * 2013-11-13 2014-06-11 侯兴福 Double-sided hardening device for convoluted plastic extrusion boards, pieces or films
CN104875403A (en) * 2015-06-17 2015-09-02 侯兴福 Piece or film material production line and surface hardening device thereof
CN106896424A (en) * 2015-12-17 2017-06-27 宁波惠之星新材料科技有限公司 A kind of solvent-free UV impressings cured film, a kind of equipment for preparing cured film and preparation method thereof
CN107457141A (en) * 2017-09-18 2017-12-12 陕西浩合机械有限责任公司 A kind of device in metal foil surface coating graphene

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