CN112941922B - Projection cloth and preparation method thereof - Google Patents

Projection cloth and preparation method thereof Download PDF

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Publication number
CN112941922B
CN112941922B CN202110130578.9A CN202110130578A CN112941922B CN 112941922 B CN112941922 B CN 112941922B CN 202110130578 A CN202110130578 A CN 202110130578A CN 112941922 B CN112941922 B CN 112941922B
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layer
cloth
projection
matte
surface treatment
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CN112941922A (en
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叶荣根
吴国明
陈志强
汪小明
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Guangzhou Xinlaifu New Material Co ltd
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Guangzhou Xinlaifu New Material Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/16—Solution
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/08—Properties of the materials having optical properties
    • D06N2209/0846—Matt, dull surface

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a projection cloth and a preparation method thereof. The projection cloth comprises a matte erasing layer, a cloth layer and a ferromagnetic layer which are sequentially stacked; the cloth layer comprises a cloth base material and a surface treatment layer, and the surface treatment layer is arranged between the cloth base material and the matte erasing layer. The multifunctional projection cloth provided by the invention has a good projection effect, can realize erasing and magnetic adsorption functions, and can be used as a projection teaching or jigsaw puzzle intelligence-developing teaching tool.

Description

Projection cloth and preparation method thereof
Technical Field
The invention relates to the technical field of projection materials, in particular to projection cloth and a preparation method thereof.
Background
The common projection screen is mostly made of cloth, and the surface of the projection screen is usually sprayed with white, black, gray and beige paints. The surface has the matte or extinction effect, forms diffuse reflection, is difficult for the reflection of light, but can't realize clearing after writing, therefore if the user writes the demand when explaining, can only erect blank or blackboard in addition, but this kind of writing mode can't fine realization projection function, has reflection of light or definition not enough scheduling problem, causes the audience to obscure easily. Further, if the user does not concentrate on the projection screen, the user may not know which part the user is explaining by writing on a glass writing board on another white board or by folding up the projection cloth and then putting it down.
CN208027077U provides a projection cloth with write function, adopts two devices to unite two into one, including first casing, first roll-up mechanism and curtain, still includes flexible clipboard, and wherein, flexible clipboard includes second casing, second roll-up mechanism and whiteboard membrane, and the removable centre gripping curtain of anchor clamps is passed through to the both sides of second casing. The second housing is internally provided with an accommodating space, the second winding mechanism is arranged in the accommodating space in the second housing, and the second winding mechanism comprises a second winding rod and a second volute spiral spring. The device has the advantages of complex structure, high manufacturing cost and difficult installation and removal.
Present plain noodles blank all reflects light, rarely is used for the teaching projection, and simultaneously, the crease appears easily in the film product receive and releases many times, and projection and writing effect descend, and in addition, the film has certain stiffness, does not have the pliability of cloth, appears bending and shrinkage deformation easily, and the time is permanent, receives and releases easy problem.
In order to solve the problem of light reflection, technical workers adopt a matte erasing and writing board or an embossed white board for replacement, but the erasing and writing effect is obviously reduced, and the projection cannot achieve the effect of cloth. Due to the existence of the warps and the wefts, the cloth creates unevenness on the surface to form natural diffuse reflection, and due to the unevenness of the surface, the cloth cannot be subjected to surface treatment like a film, so that the erasing function cannot be realized.
Disclosure of Invention
The present invention is directed to at least one of the above-mentioned problems of the prior art projection fabrics. Therefore, the invention aims to provide a projection cloth with multiple functions of erasing, writing, magnetic adsorption and the like, the invention aims to provide a preparation method of the projection cloth, and the invention aims to provide an application of the projection cloth.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a projection cloth, which comprises a matte erasing layer, a cloth layer and a ferromagnetic layer which are sequentially stacked;
the cloth layer comprises a cloth base material and a surface treatment layer;
the surface treatment layer is arranged between the cloth base material and the matte erasing layer.
According to some embodiments of the projection cloth of the present invention, the cloth base material is woven by warp and weft having a fineness of 150D to 600D.
According to some embodiments of the projection cloth of the present invention, the cloth base material is woven by combining any one of warp and weft of D150 × D150, D150 × D300, D300 × D600, and D600 × D600.
According to some embodiments of the projection cloth of the present invention, the cloth base material is woven from chemical fibers or natural fibers.
According to some embodiments of the projection cloth of the present invention, the cloth base material is woven from one or more of polyester, spandex, polypropylene, polyvinyl chloride, nylon, vinylon, acrylon, viscose, cotton, and hemp.
According to some embodiments of the projection cloth of the present invention, the surface treatment layer is formed of at least one resin selected from the group consisting of chlorinated polyolefin, chlorosulfonated polyethylene, acrylic resin or a modified resin thereof, and maleic anhydride graft-modified polyolefin resin.
According to some embodiments of the projection cloth of the present invention, the ferromagnetic layer is formed of a magnetic iron powder slurry or is a ferromagnetic film.
According to some embodiments of the projection cloth of the present invention, the matte erasing layer is formed of a matte UV paint.
According to some embodiments of the projection cloth of the present invention, the matte UV coating comprises the following components in percentage by mass: 10-60% of polyurethane acrylate, 0-20% of epoxy acrylate, 0-20% of polyester acrylate, 0-20% of hyperbranched acrylate, 10-40% of acrylate monomer, 0-10% of matting powder, 0-10% of wear-resisting agent, 3-10% of photoinitiator, 0-10% of solvent, 0-0.5% of dispersing agent and 0-1.5% of flatting agent.
According to some embodiments of the matte UV coating of the invention, the matting agent satisfies at least one of the following conditions:
the mass percentage of the extinction powder is not 0;
the extinction powder is silicon dioxide modified by a silane coupling agent;
the average particle size of the extinction powder is 3-15 microns.
According to some embodiments of the invention, the silane coupling agent-modified silica is prepared by: dissolving a silane coupling agent in an organic solvent, and mixing and stirring the solution and the silicon dioxide to obtain the silicon dioxide modified by the silane coupling agent.
According to some embodiments of the present invention, the silica modified with the silane coupling agent is prepared by a method in which the mixing and stirring temperature is 80 ℃ to 120 ℃ and the mixing and stirring time is 2 hours to 6 hours.
According to some embodiments of the invention, the organic solvent comprises at least one of ethanol, isopropanol, acetone, diethyl ether, and ethyl acetate.
According to some embodiments of the invention, the silane coupling agent comprises at least one of KH550, KH560, KH 570.
According to some embodiments of the matte UV coating of the invention, the urethane acrylate is present in an amount of 20% to 30% by weight.
According to some embodiments of the invention, the urethane acrylate comprises a urethane acrylate having a functionality of 3 or more.
According to some preferred embodiments of the invention, the urethane acrylate comprises at least one of CN929, CN989, yohima, 6145-100, 6195-100, 6158B-80.
According to some embodiments of the matte UV coating of the present disclosure, the epoxy acrylate is not 0 mass percent.
According to some preferred embodiments of the matte UV coating of the invention, the epoxy acrylate is present in an amount of 5% to 10% by weight.
According to some embodiments of the invention, the epoxy acrylate comprises an epoxy acrylate having a functionality of 2 or more.
According to some preferred embodiments of the present invention, the epoxy acrylate comprises at least one of sartomer CN104, changxing 621A-80.
According to some embodiments of the matte UV coating of the present invention, the polyester acrylate is present in an amount other than 0 mass%.
According to some preferred embodiments of the matte UV coating of the invention, the polyester acrylate is present in an amount of 5% to 10% by weight.
According to some embodiments of the invention, the polyester acrylate comprises a polyester acrylate having a functionality of 2 or more.
According to some preferred embodiments of the present invention, the polyester acrylate comprises at least one of johnson 6312-100, sartomer CN 293.
According to some embodiments of the matte UV coating of the present disclosure, the mass percent of the hyperbranched acrylate is not 0.
According to some preferred embodiments of the matte UV coating of the present invention, the hyperbranched acrylate is present in an amount of 5 to 20% by mass.
According to some embodiments of the invention, the hyperbranched acrylate comprises a hyperbranched acrylate having a functionality of > 6.
According to some preferred embodiments of the invention, the hyperbranched acrylate comprises prosperous 6363.
According to some embodiments of the matte UV coating of the invention, the acrylate monomer is present in an amount of 25% to 40% by weight.
According to some embodiments of the invention, the acrylate monomer comprises an acrylate monomer having a functionality of 2 or more.
According to some preferred embodiments of the present invention, the acrylate monomer includes at least one of trimethylolpropane triacrylate (TMPTA), 1, 6-hexanediol diacrylate (HDDA), tripropylene glycol diacrylate (TPGDA), neopentyl glycol diacrylate (NPGDA), ditrimethylolpropane tetraacrylate (DTMPTA).
According to some embodiments of the matte UV coating of the present disclosure, the abrasion resistant agent is other than 0 mass%.
According to some preferred embodiments of the matte UV coating of the present invention, the abrasion resistant agent is 5 to 10% by mass.
According to some embodiments of the invention, the anti-wear agent comprises at least one of alumina, silicon carbide, polysiloxane, calcium carbonate, tricalcium silicate, silica, polytetrafluoroethylene.
According to some embodiments of the matte UV coating of the invention, the photoinitiator is present in an amount of 5% to 6% by weight.
According to some embodiments of the invention, the photoinitiator comprises at least one of a benzoin-based initiator, a benzil-based initiator, an alkylbenzene ketone-based initiator, an acyl phosphorous oxide initiator, a benzophenone-based initiator, and a thioxanthone-based initiator.
According to some preferred embodiments of the present invention, the photoinitiator comprises at least one of 1-hydroxycyclohexyl phenyl ketone (photoinitiator 184), 2-hydroxy-2-methyl-1-phenyl-1-propanone (photoinitiator 1173), 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide (photoinitiator TPO).
According to some embodiments of the matte UV coating of the present invention, the solvent is not 0 percent by mass.
According to some preferred embodiments of the matte UV coating of the invention, the solvent is present in an amount of 4% to 9% by weight.
According to some embodiments of the invention, the solvent comprises at least one of isopropanol, propanol, n-butanol, ethyl acetate, butyl acetate, acetone, butanone, methyl isobutyl ketone, cyclohexanone, toluene, xylene, diacetone alcohol, ethylene glycol ethyl ether, propylene glycol monomethyl ether.
According to some embodiments of the matte UV coating of the present invention, the dispersant is other than 0 percent by mass.
According to some embodiments of the invention, the dispersant comprises at least one of an acrylate, a polyacrylate, a polycarboxylate, a polysiloxane interpolymer, an aliphatic amide, an ester copolymer having a carboxyl group, and an amino-containing polyester.
According to some embodiments of the matte UV coating of the present invention, the mass percentage of the leveling agent is 1% to 1.5%.
According to some embodiments of the invention, the leveling agent comprises at least one of an acrylate-based leveling agent, an organosilicon-based leveling agent, and a fluorocarbon-based leveling agent.
According to some preferred embodiments of the present invention, the leveling agent comprises at least one of BYK358, BYK354, BYK361, TEGO300, MODAFLOW 9200.
According to some embodiments of the projection cloth of the present invention, the cloth layer further comprises a primer layer; the priming layer is arranged between the cloth base material and the surface treatment layer.
In the projection cloth of the present invention, whether to provide the primer layer may be selected according to the surface condition of the cloth substrate, such as roughness. By arranging the priming layer, the roughness of the surface of the cloth substrate can be improved, and the processing performance is further improved. In some embodiments of the present invention, when the cloth substrate is a fine-grained cloth, such as 150D × 150D, the priming layer may not be provided, or may be provided; when the cloth substrate is coarse grain cloth, for example 600D × 600D, a base layer needs to be disposed.
According to some embodiments of the projection cloth of the present invention, the primer layer is formed of a water-based paint.
According to some preferred embodiments of the projection cloth of the present invention, the water-based paint has a solid content of 60wt% or more. The water-based paint for forming the priming layer is high-solid-content water-based paint, and the priming treatment is carried out by adopting the high-solid-content water-based paint, so that the priming paint has certain viscosity, and the phenomenon of permeation can be avoided.
According to some more preferred embodiments of the projection cloth of the present invention, the solid content of the water-based paint is 65wt% to 70wt%.
According to some embodiments of the invention, the components of the aqueous coating include an emulsion and a filler.
According to some embodiments of the aqueous coating of the present invention, the emulsion comprises at least one of a styrene-acrylic emulsion, a vinyl acetate-acrylic emulsion, a polyurethane emulsion, a VAE emulsion (vinyl acetate-ethylene copolymer emulsion).
According to some embodiments of the waterborne coating of the present invention, the filler comprises at least one of talc, calcium carbonate, magnesium carbonate, hollow glass beads, silica, talc, kaolin, mica, pyrophyllite, wollastonite, tremolite, diopside, quartz, feldspar, sepiolite, attapulgite, bentonite, illite, zeolite, diatomaceous earth, silica fume, barium sulfate, calcium sulfate, alumina, magnesia, aluminum hydroxide, magnesium hydroxide, graphite powder, graphene.
A second aspect of the present invention provides a method for preparing a projection cloth according to the first aspect of the present invention, comprising the steps of:
1) Performing surface treatment on one surface of the cloth base material to form a surface treatment layer; or performing priming treatment on one surface of the cloth substrate to form a priming layer, and performing surface treatment on the surface of the priming layer to form a surface treatment layer;
2) Coating a matte UV coating on the surface of the surface treatment layer, and then carrying out ultraviolet light curing to form a matte erasing layer;
3) And compounding a ferromagnetic layer on the other surface of the cloth substrate to obtain the projection cloth.
According to some embodiments of the method for preparing a projection cloth of the present invention, in the step 1), the method of priming is: and coating the water-based paint on one surface of the cloth substrate.
According to some embodiments of the method of manufacturing a projection cloth of the present invention, in the step 1), the surface treatment method is: coating, soaking or laminating a surface treatment layer material on the surface of a cloth substrate or a bottom layer, wherein the surface treatment layer material comprises at least one of chlorinated polyolefin, chlorosulfonated polyethylene, acrylic resin or modified resin thereof, and maleic anhydride grafted modified polyolefin resin.
According to some embodiments of the method for manufacturing a projection cloth of the present invention, in the step 2), the applying of the matte UV coating includes at least one of dip coating, roll coating, curtain coating, spray coating, screen printing, anilox roll coating, and dimple coating.
According to some embodiments of the method for manufacturing a projection cloth of the present invention, in the step 3), the method for compounding the ferromagnetic layer may be thermal compounding or bonding.
According to some embodiments of the method for manufacturing a projection cloth of the present invention, in the step 3), the method for forming the composite ferromagnetic layer is specifically: compounding the ferromagnetic iron powder slurry on a cloth substrate in a coating, spraying or silk-screen mode; or the ferromagnetic film is compounded on the cloth base material in the modes of extrusion, casting, calendering or film coating.
A third aspect of the invention provides the use of a projection cloth according to the first aspect of the invention as a teaching aid and/or a puzzle.
The invention has the beneficial effects that:
the multifunctional projection cloth provided by the invention has a good projection effect, can realize erasing and writing and magnetic adsorption functions, and can be used as a projection teaching or jigsaw puzzle intelligence-benefiting teaching tool.
Specifically, compared with the prior art, the invention has the following advantages:
1. the multifunctional projection cloth can completely replace the existing projection cloth, realizes the functions of writing, marking and wiping in time, and ensures that a user and an audience have better interaction;
2. the multifunctional projection cloth also has a ferromagnetic function, can magnetically adsorb magnetic products, realizes picture arrangement and combination, and is a good projection teaching tool;
3. the multifunctional projection cloth does not need to be painted or baked, is more environment-friendly, and has black back surface which is black or brown of the original ferromagnetic layer without additionally increasing ground color;
4. the multifunctional projection cloth has the advantages of simple processing mode, high mechanical automation degree and high production efficiency.
Drawings
FIG. 1 is a schematic view of a projection cloth according to the present invention;
FIG. 2 is a schematic structural diagram of a projection cloth according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a projection cloth according to another embodiment of the present invention;
FIG. 4 is a schematic view of the projection cloth of example 1 before and after wiping; before wiping; (b) after wiping;
FIG. 5 is a schematic view of a comparative example projection cloth before and after wiping; before wiping; and (b) after wiping.
Reference numerals:
a matte erase-write layer 100;
cloth layer 200, cloth substrate 210, surface treatment layer 220, and priming layer 230;
a ferromagnetic layer 300.
Detailed Description
The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
FIG. 1 is a schematic structural diagram of a projection cloth according to the present invention. Referring to fig. 1, the projection cloth provided by the present invention includes a matte erasing layer 100, a cloth layer 200, and a ferromagnetic layer 300, which are sequentially stacked. The dummy erase layer 100 and the ferromagnetic layer 300 are disposed on both surfaces of the cloth layer 200.
Fig. 2 is a schematic structural diagram of a projection cloth according to an embodiment of the present invention. Referring to fig. 2, the projection cloth according to another embodiment of the present invention includes a dummy erase-write layer 100, a surface treatment layer 220, a cloth substrate 210, and a ferromagnetic layer 300, which are sequentially stacked. Wherein the surface treatment layer 220 and the cloth base 210 form the cloth layer 200.
Fig. 3 is a schematic structural diagram of a projection cloth according to another embodiment of the present invention. Referring to fig. 3, the projection cloth according to another embodiment of the present invention includes a matte erasing layer 100, a surface treatment layer 220, a bottom layer 230, a cloth substrate 210, and a ferromagnetic layer 300, which are sequentially stacked. Wherein the surface treatment layer 220, the primer layer 230 and the cloth base material 210 form the cloth layer 200.
The present invention will be described in further detail with reference to fig. 1 to 3 by way of specific examples. The starting materials, reagents or apparatuses used in the following examples and comparative examples are, unless otherwise specified, either conventionally commercially available or can be obtained by a method of the prior art. Unless otherwise indicated, the testing or testing methods are conventional in the art.
Example 1
The structure of the projection cloth of this example is shown in fig. 3.
The matte erasing layer is a matte UV coating and is prepared from the following raw materials in parts by mass: 20 parts of urethane acrylate (8 parts of sartomer CN929, 12 parts of changxing 6145-100), 10 parts of epoxy acrylate (sartomer CN 104), 10 parts of polyester acrylate (changxing 6312-100), 5 parts of hyperbranched acrylate (changxing 6363), 30 parts of acrylate monomer (6 parts of HDDA,14 parts of TPGDA,10g of TMPTA), 8 parts of matting powder, 5 parts of wear-resisting agent (aluminum oxide), 5 parts of photoinitiator (4 parts of photoinitiator 184,1 part of photoinitiator 1173), 5.5 parts of solvent (ethyl acetate), 0.5 part of dispersant (polycarboxylate) and 1 part of flatting agent (DEGO 300). The cloth substrate is prepared from 150 Dx150D chemical fiber cloth through a priming layer and a surface treatment layer before being used as a matte UV coating.
The preparation method of the projection cloth comprises the following steps:
step 1: dissolving a silane coupling agent KH570 in ethanol, spraying and adding into a high-speed stirrer filled with silicon dioxide powder, carrying out surface coating at the temperature of 80 ℃, and treating for 6h (h) to obtain the modified extinction powder, wherein the average particle size of the extinction powder is 3-15 microns.
Step 2: adding the treated matting powder and the wear-resistant agent into an acrylic monomer in advance, dispersing and stirring for 30min, adding polyurethane acrylate, epoxy acrylate, polyester acrylate, hyperbranched acrylate resin and a solvent, stirring and dispersing at a high speed for 60min, and finally adding a photoinitiator, a flatting agent and a dispersing agent for redispersion for 30min to obtain the dispersed matte UV coating.
And step 3: the preparation method comprises the steps of coating one surface of a cloth base material with water-based paint with the solid content of 65wt% composed of styrene-acrylic emulsion and talcum powder through a coating machine to prepare a priming layer, and then coating chlorinated polyolefin on the surface of the primed layer to perform surface treatment on the primed layer to prepare a surface treatment layer.
And 4, step 4: and (3) coating the matte UV coating on the surface of the surface treatment layer by adopting an anilox roller, and carrying out ultraviolet curing to obtain the projection cloth with the erasing function.
And 5: and (4) coating magnetic iron powder slurry on the other surface of the cloth base material in the projection cloth with the erasing function in the step (4), and forming to obtain the ferromagnetic erasing projection cloth.
Example 2
The structure of the projection cloth of this example is shown in fig. 3.
The matte erasing layer is a matte UV coating and is prepared from the following raw materials in parts by mass: 30 parts of urethane acrylate (20 parts of sartomer CN929, 10 parts of changxing 6145-100), 5 parts of epoxy acrylate (changxing 621A-80), 5 parts of polyester acrylate (sartomer CN 293), 5 parts of hyperbranched acrylate (changxing 6363), 25 parts of acrylate monomer (5 parts of NPGDA,15 parts of TPGDA,5 parts of TMPTA), 8 parts of matting powder, 5 parts of wear-resistant agent (silicon carbide), 6 parts of photoinitiator (4 parts of photoinitiator 184,1 part of photoinitiator 1173,1 part of photoinitiator TPO), 9 parts of solvent (butyl acetate), 0.5 part of dispersant (polyacrylate) and 1.5 parts of flatting agent (BYK 354). The cloth substrate is prepared from 300D chemical fiber cloth through a priming layer and a surface treatment layer before being used as a matte UV coating.
The preparation method of the projection cloth comprises the following steps:
step 1: dissolving a silane coupling agent KH570 in ethanol, spraying and adding into a high-speed stirrer filled with silicon dioxide powder, carrying out surface coating at 120 ℃, and treating for 2h to obtain the modified matting powder, wherein the average particle size of the matting powder is 3-15 microns.
Step 2: adding the treated matting powder and the wear-resistant agent into an acrylic monomer in advance, dispersing and stirring for 30min, adding polyurethane acrylate, epoxy acrylate, polyester acrylate, hyperbranched acrylate resin and a solvent, stirring and dispersing at a high speed for 60min, and finally adding a photoinitiator, a leveling agent and a dispersing agent, and dispersing for 30min to obtain the dispersed matte UV coating.
And 3, step 3: the method comprises the steps of priming one surface of a cloth base material by using an aqueous coating with the solid content of 70wt% consisting of acrylic emulsion and calcium carbonate through a coating machine to prepare a priming layer, and then coating chlorosulfonated polyethylene on the surface of the primed layer to perform surface treatment on the primed layer to prepare a surface treatment layer.
And 4, step 4: and (3) coating the matte UV coating on the surface of the surface treatment layer by adopting dimples, and carrying out ultraviolet curing to obtain the projection cloth with erasing and writing functions.
And 5: and (4) compounding the ferromagnetic film on the other surface of the cloth base material in the step 4 of online compounding by using a tape casting process to prepare the ferromagnetic erasing and writing projection cloth.
Example 3
The structure of the projection cloth of this example is shown in fig. 3.
The matte erasing layer is a matte UV coating and is prepared from the following raw materials in parts by mass: 20 parts of urethane acrylate (Changxing 6145-100), 10 parts of polyester acrylate (Changxing 6312-100), 5 parts of hyperbranched acrylate (Changxing 6363), 40 parts of acrylate monomer (10 parts of HDDA,5 parts of DTMPTA,25 parts of TPGDA), 8 parts of flatting powder, 5 parts of wear-resistant agent (silicon dioxide), 6 parts of photoinitiator (4 parts of photoinitiator 184,1 part of photoinitiator 1173,1 part of photoinitiator TPO), 4 parts of solvent (xylene), 0.5 part of dispersant (polysiloxane copolymer), and 1.5 parts of leveling agent (MODAFLOW 9200). The cloth substrate was prepared from 600D × 300D chemical fiber cloth by treatment with a primer layer and a surface treatment layer before being coated with a matte UV coating.
The preparation method of the projection cloth comprises the following steps:
step 1: dissolving a silane coupling agent KH570 in ethanol, spraying and adding into a high-speed stirrer filled with silicon dioxide powder, carrying out surface coating at 120 ℃, and treating for 2h to obtain the modified matting powder, wherein the average particle size of the matting powder is 3-15 microns.
Step 2: adding the treated matting powder and the wear-resistant agent into an acrylic monomer in advance, dispersing and stirring for 30min, adding polyurethane acrylate, epoxy acrylate, polyester acrylate, hyperbranched acrylate resin and a solvent, stirring and dispersing at a high speed for 60min, and finally adding a photoinitiator, a flatting agent and a dispersing agent for redispersion for 30min to obtain the dispersed matte UV coating.
And 3, step 3: the method comprises the steps of coating one surface of a cloth base material with water-based paint with the solid content of 70wt% consisting of VAE emulsion and calcium carbonate by a coating machine to prepare a bottom layer, coating maleic anhydride grafted modified polyolefin resin on the surface of the bottom layer, and carrying out surface treatment on the surface to prepare a surface treatment layer.
And 4, step 4: and (3) rolling the matte UV coating on the surface of the surface treatment layer in a roller way, and curing by ultraviolet light to obtain the projection cloth with erasing and writing functions.
And 5: and (5) processing a ferromagnetic diaphragm through calendering, and adhering an adhesive to the other surface of the cloth base material in the erasable projection cloth obtained in the step (4) to prepare the ferromagnetic erasable projection cloth.
Comparative example
A conventional spray-painted projection cloth on the market was taken as a comparative example. The back of the traditional spray-painted projection cloth is sprayed with black paint, and the front (projection surface) is sprayed with white paint.
The multi-functional projection cloth of example 1 and the conventional spray-painted projection cloth of comparative example were subjected to performance tests, and the results are shown in table 1.
TABLE 1 test results of the projection cloth
Figure BDA0002925042130000091
Figure BDA0002925042130000101
The performance test methods in table 1 are:
(1) Gloss: measured by using a 60-degree angle gloss meter provided by Shanghai Li Cheng Bangxi Instrument science and technology Co., ltd and having the model of MG-60.
(2) Adhesion force: refer to the national Standard GB/T9286-1998 test for marking out paint and varnish films.
(3) Writing adhesion: refer to industry Standard "white Board written by QB/T4153-2010".
(4) Wiping property: the test was carried out using method A as shown in Standard 5.3.2.2, with reference to the trade Standard QB/T4153-2010 writing whiteboard.
FIG. 4 is a schematic view of the projection cloth of example 1 before and after wiping, in which FIG. 4 (a) is the projection layout of example 1 before wiping and FIG. 4 (b) is the projection layout of example 1 after wiping. As can be seen by comparing fig. 4 (a) and 4 (b), the whiteboard pen of example 1 has clear writing before wiping, and is clean and free of residue after wiping. In addition, the effect of the projection cloths of example 2 and example 3 was compared with that of example 1.
Fig. 5 is a schematic view of a comparative example projection cloth before and after wiping, in which fig. 5 (a) is a comparative example projection layout before wiping and fig. 5 (b) is a comparative example projection layout after wiping. As can be seen from a comparison between fig. 5 (a) and 5 (b), the projected cloth whiteboard pen of the comparative example has clear written handwriting before wiping, and has serious residual handwriting after wiping.
According to the test results, the projection cloth provided by the embodiment of the invention has multiple functions, can realize erasing and writing and magnetic adsorption, has a good projection effect, and has performance superior to that of the traditional spray-painted projection cloth.
The multifunctional projection cloth provided by the invention can be used as projection teaching or jigsaw puzzle educational teaching tools, such as biological teaching aids, and has wide market application prospect.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (8)

1. A projection cloth is characterized in that: the fabric comprises a matte erasing layer, a cloth layer and a ferromagnetic layer which are sequentially stacked;
the cloth layer comprises a cloth base material and a surface treatment layer;
the surface treatment layer is arranged between the cloth base material and the matte erasing layer;
the surface treatment layer is formed by at least one of chlorinated polyolefin, chlorosulfonated polyethylene, acrylic resin or modified resin thereof, and maleic anhydride grafted modified polyolefin resin;
the matte erasing layer is formed by ultraviolet curing of a matte UV coating; the matte UV coating comprises the following components in percentage by mass: 10-60% of polyurethane acrylate, 0-20% of epoxy acrylate, 0-20% of polyester acrylate, 0-20% of hyperbranched acrylate, 10-40% of acrylate monomer, 0-10% of flatting powder, 0-10% of wear-resistant agent, 3-10% of photoinitiator, 0-10% of solvent, 0-0.5% of dispersant and 1-1.5% of flatting agent; the mass percentages of the epoxy acrylate, the polyester acrylate, the hyperbranched acrylate, the matting powder, the wear-resisting agent, the solvent and the dispersing agent are all not 0; the acrylate monomer comprises at least one of trimethylolpropane triacrylate, 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, neopentyl glycol diacrylate and ditrimethylolpropane tetraacrylate.
2. A projection cloth according to claim 1, wherein: the cloth base material is woven by warps and wefts with the fineness of 150D to 600D.
3. A projection cloth according to claim 1, wherein: the ferromagnetic layer is formed of magnetic iron powder slurry or is a ferromagnetic film.
4. A projection cloth according to claim 1, wherein: the matting powder meets at least one of the following conditions:
the extinction powder is silicon dioxide modified by a silane coupling agent;
the average particle size of the extinction powder is 3-15 micrometers.
5. A projection cloth according to any one of claims 1 to 3, wherein: the cloth layer also comprises a base layer; the priming layer is arranged between the cloth base material and the surface treatment layer.
6. The projection cloth of claim 5, wherein: the primer layer is formed from a water-based paint.
7. The process for producing a projection cloth according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
1) Performing surface treatment on one surface of the cloth base material to form a surface treatment layer; or performing priming treatment on one surface of the cloth base material to form a priming layer, and performing surface treatment on the surface of the priming layer to form a surface treatment layer;
2) Coating a matte UV coating on the surface of the surface treatment layer, and forming a matte erasing layer through ultraviolet light curing;
3) And compounding a ferromagnetic layer on the other surface of the cloth base material to obtain the projection cloth.
8. Use of the projection cloth of any of claims 1 to 6 as a teaching aid and/or puzzle.
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