CN114654935A - SPC decorative board and preparation method thereof - Google Patents
SPC decorative board and preparation method thereof Download PDFInfo
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- CN114654935A CN114654935A CN202210165160.6A CN202210165160A CN114654935A CN 114654935 A CN114654935 A CN 114654935A CN 202210165160 A CN202210165160 A CN 202210165160A CN 114654935 A CN114654935 A CN 114654935A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
- B31F5/04—Attaching together sheets, strips or webs; Reinforcing edges by exclusive use of adhesives
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
- B44C1/105—Applying flat materials, e.g. leaflets, pieces of fabrics comprising an adhesive layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/181—Insulating layers integrally formed with the flooring or the flooring elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
Abstract
The invention discloses an SPC decorative plate and a preparation method thereof, and the method comprises the steps of sequentially placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top, carrying out hot pressing to obtain a melamine bond paper, carrying out corona treatment on the surface of an SPC substrate plate, then coating glue on the surface of the SPC substrate plate, then placing the melamine bond paper on the SPC substrate plate, and carrying out pressing at normal temperature to obtain the SPC decorative plate. According to the invention, the defective melamine impregnated bond paper, the impregnated parchment paper, the finished melamine impregnated bond paper and the wear-resistant layer are hot-pressed and molded in advance to prepare the hard melamine bond paper with high toughness, good wear resistance, scratch resistance, stain resistance and randomly-selected lines and a certain thickness, and then the melamine bond paper is pressed and stuck on the SPC substrate plate through cold glue to obtain the SPC decorative plate with high performance, various touch senses and attractive appearance, so that the problem of softening of the SPC plate caused by direct hot pressing is avoided.
Description
Technical Field
The invention belongs to the technical field of decorative materials, and particularly relates to an SPC decorative plate and a preparation method thereof.
Background
The interior decoration material is marble, wood board and glazed tile. The thick marble is beautiful, but is not suitable for indoor decoration because of radioactivity of individual marble, and the ground surface is too smooth and easy to slip when used as a floor tile; the wooden board is easy to deform when meeting water and is difficult to maintain; the laying of the glazed tile is troublesome. Therefore, it is necessary to develop a decorative material which has the advantages of beautiful appearance, water resistance, skid resistance, easy maintenance and simple laying, and is made of marble and wood boards.
The wood decorative board uses a large amount of natural tree species (such as dozens of species of water ash, oak, beech, maple, cherry and the like) as a root base, and has great damage to forest resources. Meanwhile, the veneer made of the decorative veneer or the artificial wood decorative veneer by a precise cutting or rotary cutting processing method is adhered to the base material, and is made by adopting an adhesive process and hot pressing, the formaldehyde content is generally higher, the veneer needs to be left for a longer time after indoor decoration, the veneer is easy to bubble when meeting water when used as a floor, and the maintenance cost is higher.
The stone plastic composite material (SPC) is formed by compounding a polymer, such as PP and PVC, with natural stone as an adhesive, and has become a new favorite for building decoration materials because of its advantages of water resistance, skid resistance, durability, no formaldehyde, etc. However, due to the use of materials such as PP and PVC, if a decorative film is added on the SPC substrate plate, the temperature of the pressing and sticking cannot exceed 120 ℃ through a hot pressing mode, otherwise the substrate will soften.
The melamine impregnated bond paper is prepared by soaking paper with different colors or textures in amino resin and drying to a certain curing degree; the triamine decorative board is formed by pressing and sticking melamine impregnated bond paper on a substrate board after hot pressing. The hot-pressing temperature of the melamine impregnated adhesive film paper needs to be 150-200 ℃, the pressing time is 20-30 seconds at the temperature of 200 ℃, and the pressing time is 5-8 minutes at the temperature of 150 ℃.
If the melamine impregnated bond paper is required to be pressed on the SPC board, the melamine impregnated bond paper is difficult to be pressed on the SPC board, the melamine impregnated bond paper cannot be well cured at the temperature lower than 150 ℃, the surface physical property is influenced, the SPC board is softened at the temperature higher than 120 ℃, and the melamine impregnated bond paper is extruded and thinned under the action of pressure, so that a reasonable technology is required to be found to fuse the melamine impregnated bond paper and the SPC board.
In the preparation process of the melamine impregnated bond paper, there are several key technical indexes: the sizing amount, the volatile matter and the pre-curing degree can be hot-pressed into a final product only if the three indexes are within the normal range; otherwise, various board surface problems can occur in hot pressing, such as dry flower, wet flower, scald, bright star, no stain resistance, no wear resistance, no scratch resistance and the like; and the melamine film adhesive paper is collided by a forklift in the transportation process to cause paper surface cracking. In the two cases, if the problem cannot be solved after the customer adjusts the melamine film adhesive paper by pressing, the melamine film adhesive paper can return to the manufacturer. The amino resin used in the inferior-quality adhesive film paper belongs to thermosetting resin and has irreversibility, so that the adhesive film paper has no method for regulating the sizing amount, volatile matters and the pre-curing degree by returning to a furnace, no good treatment method exists at present, the shelf life of the melamine adhesive film paper is 3 months, the melamine adhesive film paper cannot be digested for three months, the adhesive film paper becomes waste, and the adhesive film paper cannot be burnt, so that the adhesive film paper can only be treated as dangerous waste. How to utilize the adhesive film paper which is returned to be unusable is a problem to be solved by the industry.
In the prior art, a PVC decorative film is rolled on an SPC substrate, and the PVC decorative film is attached to an SPC substrate plate through a calender, but the physical properties of the PVC decorative film are much poorer than those of a melamine decorative film, such as scratch resistance, stain resistance, water vapor resistance and the like. And the calendering can only be used for simply embossing, and can not be used for pressing various textures like a melamine decorative film.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides an SPC decorative plate and a preparation method thereof, waste melamine impregnated bond paper is utilized, and a melamine resin layer with more excellent performance is added on the SPC plate.
According to one aspect of the invention, the SPC decorative plate sequentially comprises an SPC base material plate, a cold glue layer and a melamine glue film plate from bottom to top, wherein the melamine glue film plate sequentially comprises a bearing layer, a toughness layer, a decorative layer and a wear-resistant layer from bottom to top; the bearing layer is inferior melamine impregnated bond paper, the decoration layer is finished melamine impregnated bond paper, the toughness layer is impregnated parchment paper, and the wear-resisting layer is impregnated balance paper. Furthermore, the thickness of the melamine adhesive film plate is 1.0-1.2 mm.
In some embodiments of the invention, the impregnated parchment paper is parchment paper impregnated with melamine formaldehyde resin. The gram weight of the parchment paper is 50-60g/m2The glue amount is 30-40g/m2。
In some embodiments of the invention, the impregnated parchment paper is made by the following process: adding a dedusting agent, a release agent, a penetrating agent and a curing agent into melamine formaldehyde resin, and stirring to obtain tough layer impregnation slurry; and dipping parchment paper into the tough layer dipping slurry, and drying to obtain the dipped parchment paper. Further, the drying is sequentially carried out by four drying ovens with the temperatures of 145 ℃, 160 ℃, 165 ℃ and 140 ℃, and the drying time of each drying oven is 6-8 s.
In some embodiments of the invention, the impregnated balancing paper is a balancing paper impregnated with an abrasion resistant melamine resin, the abrasion resistant melamine resin comprising aluminum oxide. The gram weight of the balance paper is 18-20g/m2The glue amount is 45-50g/m2。
In some embodiments of the invention, the impregnated balancing paper is made by: adding aluminum oxide, a dedusting agent, a release agent, a penetrating agent and a curing agent into melamine resin, stirring to obtain wear-resistant melamine resin slurry, dipping balance paper into the wear-resistant melamine resin slurry, and drying to obtain the dipped balance paper. Further, the drying is sequentially carried out by four drying ovens with the temperatures of 145 ℃, 160 ℃, 165 ℃ and 140 ℃, and the drying time of each drying oven is 6-8 s. The impregnated balance paper becomes a wear-resistant and transparent triamine film after subsequent hot pressing.
In some embodiments of the present invention, the structure of the inferior melamine-impregnated bond paper and/or the finished melamine-impregnated bond paper is from bottom to top: melamine resin layer, urea-formaldehyde resin layer, printing paper, urea-formaldehyde resin layer, melamine resin layer. The gram weight of the printing paper is 80-100g/m2。
In some embodiments of the invention, the finished melamine impregnated bond paper is made by the following process: adding a penetrating agent and a curing agent into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding a dedusting agent, a release agent and a curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly dipped with the urea resin layer slurry, and is coated with the melamine resin layer slurry by upper and lower roller after being dried for the first time, and then is dried for the second time, thus obtaining the printing paper. Further, the gluing amount of the urea resin layer is 50-60g/m2The gluing amount of the melamine resin layer is 25-35g/m2。
In some preferred embodiments of the present invention, in the urea resin layer slurry, the amount of the penetrating agent is 0.1 to 0.2% by mass of the urea resin, and the amount of the curing agent is 0.1 to 0.2% by mass of the urea resin.
In some preferred embodiments of the present invention, in the melamine resin layer slurry, the dedusting agent is used in an amount of 0.1-0.3% by mass of the melamine resin, the release agent is used in an amount of 0.1-0.2% by mass of the melamine resin, and the curing agent is used in an amount of 0.2-0.4% by mass of the melamine resin.
In some preferred embodiments of the present invention, the first drying is performed by passing through 4 drying ovens at temperatures of about 135 ℃, 150 ℃, 145 ℃ and 130 ℃, wherein the drying time of each oven is 5-7 s.
In some preferred embodiments of the present invention, the second drying is performed by passing through 5 drying ovens at temperatures of about 135 ℃, 160 ℃, 165 ℃, 130 ℃, and the drying time of each oven is 5-7 s.
In some embodiments of the invention, the melamine resin comprises the following components in parts by weight: 200 parts of melamine 170-containing material, 220 parts of formaldehyde solution 180-containing material, 5-10 parts of caprolactam, 5-10 parts of diethylene glycol, 80-100 parts of water, 1-5 parts of triethanolamine and 1-5 parts of polyethylene glycol.
The invention also provides a preparation method of the SPC decorative board, which comprises the following steps:
(1) placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper in sequence from bottom to top, and performing hot pressing to obtain a melamine adhesive bond plate;
(2) and (3) performing corona treatment on the surface of the SPC base material plate, coating glue on the surface of the SPC base material plate, placing the melamine adhesive film plate on the SPC base material plate, and pressing and pasting at normal temperature to obtain the SPC decorative plate. The corona treatment can break chemical bonds of plastic molecules to degrade, the surface roughness and the surface area are increased, the adhesive force of resin on the surface of the SPC substrate plate is increased, and the surface of the SPC substrate plate is suitable for cold glue treatment after the SPC substrate plate is subjected to corona treatment.
In some embodiments of the present invention, in step (2), the coating amount of the glue is 15-20g/m2。
In some embodiments of the present invention, in step (2), the glue is polyurethane glue.
In some embodiments of the present invention, in step (1), the temperature of the hot pressing is 150 ℃ to 160 ℃, and the pressure is 15 to 18 MPa. Further, the hot pressing time is 5-6 min.
In some embodiments of the invention, in the step (2), the temperature of the pressing paste is 20-30 ℃ and the pressure is 5-6 MPa. Furthermore, the pressing time is 20-30 min.
In some preferred embodiments of the present invention, in step (2), the pressing is performed by using upper and lower steel plates, the lower steel plate is a matte surface, and the upper steel plate has grains. Various lines can be pressed according to the requirements of customers to obtain various appearances and touch feelings. The lower steel plate is a matte surface, so that the adhesive force between the melamine adhesive film plate and the SPC plate can be increased
In some preferred embodiments of the invention, the dedusting agent is α - (nonylphenyl) - ω -hydroxypoly (oxo-1, 2-ethanediyl) and diethylene glycol; the release agent is 2-ethylhexyl phosphate; the penetrating agent is alkylphenol ethoxylates; the curing agent is p-toluenesulfonic acid, morpholine and water in a mass ratio of 1:2: 3.
According to a preferred embodiment of the present invention, at least the following advantages are provided:
according to the invention, the defective melamine impregnated bond paper, the impregnated parchment paper, the finished melamine impregnated bond paper and the wear-resistant layer are hot-pressed and molded in advance to prepare the hard melamine bond paper with high toughness, good wear resistance, scratch resistance, stain resistance and randomly-selected lines and a certain thickness, and then the melamine bond paper is pressed and stuck on the SPC substrate plate through cold glue to obtain the SPC decorative plate with high performance, various touch senses and attractive appearance, so that the problem of softening of the SPC plate caused by direct hot pressing is avoided. Meanwhile, waste melamine impregnated bond paper is used as a bearing layer in the melamine bond paper, so that the waste is directly utilized without additional treatment, and waste is avoided.
Compared with the traditional SPC board, the decorative lines of the SPC decorative board have the advantages that the lines are extruded by the roller when the SPC board is plasticized and extruded and the roller is molded, the hard melamine film board is prepared firstly, any steel board lines such as a pitted surface, a matte surface, a high gloss surface, a suede surface, a wood thorn line and the like can be copied by hot pressing in advance, richer surface texture is realized, the wear-resistant and scratch-resistant grade is higher than that of the traditional SPC board, and the SPC decorative board can be applied to the ground decorative floor.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Example 1
The embodiment prepares an SPC decorative board, which sequentially comprises an SPC base material board (comprising PVC resin powder, mountain flour, a plasticizer, a stabilizer and carbon black, wherein the thickness of the SPC base material board is 5mm), a cold glue layer and a melamine glue film board from bottom to top, wherein the melamine glue film board sequentially comprises a bearing layer, a toughness layer, a decorative layer and a wear-resistant layer from bottom to top, the bearing layer is inferior melamine impregnated glue film paper, the decorative layer is finished melamine impregnated glue film paper, the toughness layer is impregnated parchment paper, and the wear-resistant layer is impregnated balance paper. Wherein:
the structure of the impregnated parchment paper is from bottom to top: melamine formaldehyde resin layer, parchment paper and melamine formaldehyde resin layer, wherein the gram weight of the parchment paper is 50g/m2(ii) a The impregnated parchment paper is prepared by the following method: adding 0.1% of dedusting agent, 0.2% of release agent, 0.2% of penetrating agent and 0.2% of curing agent in parts by weight into melamine formaldehyde resin, and stirring to obtain tough layer dipping slurry; dipping parchment paper into the tough layer dipping slurry, wherein the glue applying amount is 35g/m2And sequentially passing the impregnated parchment through four ovens at the temperatures of 145 ℃, 160 ℃, 165 ℃ and 140 ℃, wherein the drying time of each oven is 7s, so as to obtain the impregnated parchment.
The structure of the finished melamine impregnated bond paper is as follows from bottom to top: melamine resin layer, urea resin layer, printing paper, urea resin layer, melamineThe gram weight of the resin layer and the printing paper is 90g/m2(ii) a The finished melamine impregnated bond paper is prepared by the following method: adding a penetrating agent with the mass fraction of 0.1% and a curing agent with the mass fraction of 0.1% into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding 0.2 mass percent of dedusting agent, 0.2 mass percent of release agent and 0.3 mass percent of curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly dipped with the urea-formaldehyde resin layer slurry, and the gluing amount of the urea-formaldehyde resin layer is 55g/m2Passing through 4 drying ovens at 135 deg.C, 150 deg.C, 145 deg.C and 130 deg.C, drying for 5s each oven, and coating melamine resin layer slurry on the upper and lower sides, wherein the coating amount of melamine resin layer is 30g/m2And then 5 sections of drying ovens with the temperatures of 135 ℃, 160 ℃, 165 ℃ and 130 ℃ are used, and the drying time of each section of drying oven is 7s, so that the finished product of the melamine impregnated bond paper is obtained.
The defective melamine impregnated bond paper is an unqualified product produced in the preparation process, or a defective melamine impregnated bond paper is collided by a forklift in the transportation process to cause paper surface cracking.
The structure of the impregnated balance paper is as follows from bottom to top: the wear-resistant melamine resin layer, the balance paper and the wear-resistant melamine resin layer, wherein the gram weight of the balance paper is 19g/m2(ii) a The impregnated balance paper is prepared by the following method: adding 35 mass percent of 100-mesh 200-mesh aluminum oxide, 0.2 mass percent of dedusting agent, 0.2 mass percent of release agent, 0.1 mass percent of penetrating agent and 0.1 mass percent of curing agent into melamine resin, stirring to obtain wear-resistant melamine resin slurry, soaking balance paper into the wear-resistant melamine resin slurry, wherein the sizing amount is 50g/m2Sequentially passing through four drying ovens with the temperatures of 145 ℃, 160 ℃, 165 ℃ and 140 ℃, wherein the drying time of each drying oven is 6s, and obtaining the impregnated balance paper.
Wherein the melamine resin is prepared from the following raw materials in parts by weight: 180 parts of melamine, 200 parts of formaldehyde solution, 8 parts of caprolactam, 6 parts of diethylene glycol, 90 parts of water, 3 parts of triethanolamine and 3 parts of polyethylene glycol.
Preparing an SPC decorative plate: placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top in sequence,then, the mixture enters a hot press, the pressure of the hot press is 17MPa, the temperature of an upper steel plate is 160 ℃, the upper steel plate has grains, the temperature of a lower steel plate is 160 ℃, the lower steel plate is a matte surface, and the pressing time is 6min, so that a melamine adhesive film plate is obtained, wherein the thickness of the melamine adhesive film plate is 1.2 mm; corona is firstly carried out on the surface of the SPC substrate plate, then polyurethane glue is coated on the surface of the SPC substrate plate, and the coating weight of the polyurethane glue is 18g/m2And then, placing the melamine rubber film plate on an SPC base material plate, and pressing and pasting for 20min under the pressure of 6MPa at normal temperature to obtain the SPC decorative plate.
Wherein the viscosity of the polyurethane glue is 50s for coating four cups, and 0.1 percent of wetting agent and 0.5 percent of silane coupling agent KH550, namely gamma-aminopropyl triethoxysilane, are added into the polyurethane in parts by weight.
Comparative example 1
This comparative example prepared an SPC decorative sheet, which was different from example 1 in that the melamine adhesive film sheet was not prepared, and the melamine impregnated adhesive film paper was directly adhered to the SPC base material sheet, and the specific procedure was:
(1) preparation of melamine impregnated bond paper: adding a penetrating agent with the mass fraction of 0.1% and a curing agent with the mass fraction of 0.1% into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding 0.2 mass percent of dedusting agent, 0.2 mass percent of release agent and 0.3 mass percent of curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly dipped with the urea-formaldehyde resin layer slurry, and the gluing amount of the urea-formaldehyde resin layer is 55g/m2Passing through 4 sections of drying ovens with the temperatures of 135 ℃, 150 ℃, 145 ℃ and 130 ℃, wherein the drying time of each section of drying oven is 5s, then coating melamine resin layer slurry on the upper and lower sides in a rolling way, and the sizing amount of the melamine resin layer is 30g/m2Then 5 sections of drying ovens with the temperature of 135 ℃, 160 ℃, 165 ℃ and 130 ℃ are used, and the drying time of each section of drying oven is 7s, so as to obtain the melamine impregnated bond paper;
(2) preparing an SPC decorative plate: corona is firstly carried out on the surface of the SPC substrate plate, then polyurethane glue is coated on the surface of the SPC substrate plate, and the coating weight of the polyurethane glue is 18g/m2Adhering the melamine impregnated bond paper in the step (1) on an SPC substrate board, and pressing and pasting for 20min under the pressure of 6MPa at normal temperature to obtain SPC packageAnd (7) decorating the board.
The SPC decorative board of this comparative example preparation, because do not pass through the hot pressing, melamine still can not become the membrane that has various performance, because melamine glued membrane paper can only become the compact decorative membrane in the crosslinking solidification under the hot pressing condition, plays the effect of protection printing layer, therefore the SPC decorative board of this comparative example does not possess the excellent performance of triamine membrane.
Table 1 example 1 performance testing of SPC decorative panels
The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. An SPC decorative plate is characterized by sequentially comprising an SPC base material plate, a cold glue layer and a melamine glue film plate from bottom to top, wherein the melamine glue film plate sequentially comprises a bearing layer, a toughness layer, a decorative layer and a wear-resistant layer from bottom to top; the bearing layer is inferior melamine impregnated bond paper, the decoration layer is finished melamine impregnated bond paper, the toughness layer is impregnated parchment paper, and the wear-resisting layer is impregnated balance paper.
2. An SPC decorative board according to claim 1, characterized in that the impregnated parchment paper is parchment paper impregnated with melamine formaldehyde resin.
3. An SPC decorative board according to claim 1, characterized in that the impregnated balancing paper is a balancing paper impregnated with wear resistant melamine resin, which contains aluminium oxide.
4. An SPC decorative board according to claim 3, characterized in that the impregnated balancing paper is made by the following method: adding aluminum oxide, a dedusting agent, a release agent, a penetrating agent and a curing agent into melamine resin, stirring to obtain wear-resistant melamine resin slurry, dipping balance paper into the wear-resistant melamine resin slurry, and drying to obtain the dipped balance paper.
5. An SPC decorative board according to claim 1, characterized in that the structure of the inferior melamine impregnated bond paper and/or the finished melamine impregnated bond paper is from bottom to top: melamine resin layer, urea-formaldehyde resin layer, printing paper, urea-formaldehyde resin layer, melamine resin layer.
6. An SPC decorative board according to claim 5, characterized in that the finished melamine impregnated bond paper is made by the following method: adding a penetrating agent and a curing agent into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding a dedusting agent, a release agent and a curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly dipped with the urea resin layer slurry, and is coated with the melamine resin layer slurry by upper and lower roller after being dried for the first time, and then is dried for the second time, thus obtaining the printing paper.
7. A method of manufacturing an SPC decorative panel according to any of claims 1-4, comprising the steps of:
(1) placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top in sequence, and carrying out hot pressing to obtain a melamine adhesive film board;
(2) and (3) performing corona treatment on the surface of the SPC substrate plate, coating glue on the surface of the SPC substrate plate, placing the melamine glue film plate on the SPC substrate plate, and pressing and pasting at normal temperature to obtain the SPC decorative plate.
8. The method according to claim 7, wherein in the step (2), the coating amount of the glue is 15-20g/m2。
9. The method according to claim 7, wherein the hot-pressing temperature in step (1) is 150 ℃ to 160 ℃ and the pressure is 15 to 18 MPa.
10. The manufacturing method according to claim 7, wherein in the step (2), the temperature of the pressing paste is 20-30 ℃ and the pressure is 5-6 MPa.
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| CN116855141A (en) * | 2023-08-02 | 2023-10-10 | 广东天元汇邦新材料股份有限公司 | Polyester resin and application thereof, and facing decorative material |
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