CN114654935B - SPC decorative plate and preparation method thereof - Google Patents

SPC decorative plate and preparation method thereof Download PDF

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Publication number
CN114654935B
CN114654935B CN202210165160.6A CN202210165160A CN114654935B CN 114654935 B CN114654935 B CN 114654935B CN 202210165160 A CN202210165160 A CN 202210165160A CN 114654935 B CN114654935 B CN 114654935B
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Prior art keywords
melamine
paper
spc
impregnated
plate
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CN114654935A (en
Inventor
徐昆
李琳琪
王春平
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Foshan Tianyuan Hejin Decoration Material Co ltd
Guangdong Tianyuan Huibang New Material Co ltd
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Foshan Tianyuan Hejin Decoration Material Co ltd
Guangdong Tianyuan Huibang New Material Co ltd
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses an SPC decorative plate and a preparation method thereof, comprising 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 adhesive film plate, carrying out corona on the surface of an SPC substrate plate, then coating glue on the surface of the SPC substrate plate, and then placing the melamine adhesive film plate on the SPC substrate plate, and carrying out pressing at normal temperature to obtain the SPC decorative plate. The invention prepares the hard melamine film plate with high toughness, good wear resistance, scratch resistance, stain resistance and optional grain and certain thickness by hot-pressing and molding the defective melamine impregnated film paper, impregnated parchment paper, finished melamine impregnated film paper and the wear-resistant layer in advance, and then presses the melamine film plate on the SPC substrate plate through cold glue to obtain the SPC decorative plate with high performance, various touch feeling and beautiful appearance, thereby avoiding the problem of softening the SPC plate caused by direct hot pressing.

Description

SPC decorative plate and preparation method thereof
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 decoration materials selected for interior decoration are not marble, wood board or glazed tile. Thick marble is beautiful, but is not suitable for interior decoration because of radioactivity of individual marble, and the floor is too smooth and easy to slip when used as floor tile; the wood board is easy to deform when meeting water, and is not easy to maintain; the paving of the glazed tile is troublesome. Therefore, it is necessary to develop a decorative material which has both marble and wood board and is beautiful and elegant, waterproof and anti-skid, easy to maintain and simple to lay.
The wood decorative boards are all based on a large number of natural tree species (such as tens of varieties of fraxinus mandshurica, oak, beech, maple, cherry, etc.), and have great damage to forest resources. Meanwhile, the veneer made of decorative veneer or artificial wood decorative veneer is stuck on the base material by a precise cutting or rotary cutting processing method, and is made by adopting an adhesive process and hot pressing, and generally has higher formaldehyde content, needs to be left for a long time after indoor decoration, is easy to bubble when meeting water when being used as a floor, and has higher maintenance cost.
The stone plastic composite material (SPC) is formed by compounding a polymer such as PP and PVC as an adhesive and natural stone, and has the advantages of water resistance, skid resistance, durability, no formaldehyde and the like, so that the SPC becomes a new pet for building decoration materials. However, if a decorative film is to be added to the SPC substrate board due to the use of materials such as PP and PVC, the temperature of the pressing cannot exceed 120 ℃ by hot pressing, 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 degree of solidification; the triamine decorative board is formed by pressing melamine impregnated bond paper on a substrate board after hot pressing. The hot pressing temperature of the melamine impregnated bond paper needs to be 150-200 ℃, the pressing time of 200 ℃ is 20-30 seconds, the pressing time of 150 ℃ is 5-8 minutes.
If the melamine impregnated bond paper is to be pressed on an SPC board, the melamine impregnated bond paper cannot be well solidified below 150 ℃, the surface physical property is affected, the SPC board is softened above 120 ℃, and the melamine impregnated bond paper is extruded and thinned under the action of pressure, so that a reasonable technology needs to be found to fuse the melamine impregnated bond paper and the SPC board together.
In the preparation process of melamine impregnated bond paper, there are several key technical indexes: the sizing amount, volatile matters and pre-curing degree can be hot-pressed into a final product only if three indexes are in a normal range; otherwise, various board problems such as dry flowers, wet flowers, scalds, bright stars, dirt resistance, wear resistance, scratch resistance and the like can occur in hot pressing; in addition, the melamine adhesive film paper has the problem that the paper surface is cracked when being knocked by a forklift in the transportation process. In the two cases, if the customer cannot solve the problem after the adjustment by pressing, the melamine adhesive paper can be returned to the manufacturer. The amino resin used in the adhesive film paper which becomes the defective product belongs to thermosetting resin and has irreversibility, so that the adhesive film paper has no method for adjusting the sizing amount, volatile matters and pre-curing degree by returning to the furnace, no good treatment method exists at present, the quality guarantee period of melamine adhesive film paper is 3 months, the melamine adhesive film paper is not digested in three months, the adhesive film paper becomes waste, and the adhesive film paper can not be burnt, so that the adhesive film paper can only be treated as dangerous waste. How to use the returned unusable adhesive film paper is a problem which needs 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 covered and stuck on an SPC substrate board by a calender, but the physical properties of the PVC decorative film are far poorer than those of a melamine decorative film, such as scratch resistance, pollution resistance, water vapor resistance and the like. And calendering can only simply make some embossings, and can not press various textures like a melamine decorative film.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the prior art described above. Therefore, the invention provides the SPC decorative board and the preparation method thereof, waste melamine impregnated bond paper is utilized, and the melamine resin layer with more excellent performance is added on the SPC board.
According to one aspect of the invention, an SPC decorative plate is provided, which sequentially comprises an SPC substrate 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 defective melamine impregnated bond paper, the decorative layer is finished melamine impregnated bond paper, the toughness layer is impregnated parchment paper, and the wear-resistant layer is impregnated balance paper. Further, the thickness of the melamine film plate is 1.0-1.2mm.
In some embodiments of the invention, the impregnated kraft paper is kraft paper impregnated with melamine formaldehyde resin. The grammage of the parchment is 50-60g/m 2 The sizing amount is 30-40g/m 2 。
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 a tough layer impregnating slurry; and (3) immersing the parchment paper into the tough layer impregnating slurry, and drying to obtain the impregnated parchment paper. Further, the drying is carried out by sequentially passing through four sections of ovens with the temperature of about 145 ℃, 160 ℃, 165 ℃ and 140 ℃, and the drying time of each section of oven is 6-8s.
In some embodiments of the invention, the impregnated balancing paper is balancing paper impregnated with a wear resistant melamine resin containing aluminum oxide. The gram weight of the balance paper is 18-20g/m 2 The sizing amount is 45-50g/m 2 。
In some embodiments of the invention, 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 dipping balance paper. Further, the drying is carried out by sequentially passing through four sections of ovens with the temperature of about 145 ℃, 160 ℃, 165 ℃ and 140 ℃, and the drying time of each section of oven is 6-8s. The impregnated balancing paper becomes a wear resistant and transparent triamine film after subsequent hot pressing.
In some embodiments of the present invention, the structure of the defective melamine impregnated bond paper and/or the finished melamine impregnated bond paper is from bottom to top: melamine resin layer, urea resin layer, printing paper, urea resin layer, melamine resin layer. The gram weight of the printing paper is 80-100g/m 2 。
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 soaked in the urea resin layer sizing agent, after the first drying, the melamine resin layer sizing agent is coated on the upper and lower rollers, and then the second drying is carried out, so that the printing paper is obtained. Further, the sizing amount of the urea resin layer is 50-60g/m 2 The sizing amount of the melamine resin layer is 25-35g/m 2 。
In some preferred embodiments of the present invention, the penetrating agent is used in an amount of 0.1 to 0.2% by mass of the urea-formaldehyde resin and the curing agent is used in an amount of 0.1 to 0.2% by mass of the urea-formaldehyde resin in the urea-formaldehyde resin layer slurry.
In some preferred embodiments of the present invention, the amount of the dust removing agent is 0.1 to 0.3% by mass of the melamine resin, the amount of the mold releasing agent is 0.1 to 0.2% by mass of the melamine resin, and the amount of the curing agent is 0.2 to 0.4% by mass of the melamine resin in the melamine resin layer slurry.
In some preferred embodiments of the present invention, the first drying is performed by passing through 4 ovens at a temperature of about 135 ℃, 150 ℃, 145 ℃, 130 ℃ for a drying time of 5-7 seconds per oven.
In some preferred embodiments of the present invention, the second drying is performed in 5-stage ovens at a temperature of about 135 c, 160 c, 165 c, 130 c, each oven drying time being 5-7s.
In some embodiments of the present invention, the melamine resin comprises the following components in parts by weight: 170-200 parts of melamine, 180-220 parts of formaldehyde solution, 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 plate, which comprises the following steps:
(1) Sequentially placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top, and performing hot pressing to obtain a melamine film plate;
(2) And (3) firstly carrying out corona on the surface of the SPC substrate plate, then coating glue on the surface of the SPC substrate plate, then placing the melamine film plate on the SPC substrate plate, and carrying out press-fitting at normal temperature to obtain the SPC decorative plate. The corona treatment can break chemical bonds of plastic molecules to degrade, increase surface roughness and surface area, increase adhesive force of resin on the surface of an SPC substrate board, and the surface of the SPC board is suitable for cold glue treatment after the SPC board is subjected to the corona treatment.
In some embodiments of the invention, in step (2), the glue is applied in an amount of 15-20g/m 2 。
In some embodiments of the invention, in step (2), the glue is a polyurethane glue.
In some embodiments of the invention, in step (1), the hot pressing is performed at a temperature of 150 to 160 ℃ and a pressure of 15 to 18MPa. Further, the hot pressing time is 5-6min.
In some embodiments of the invention, in step (2), the temperature of the press-fit is 20-30 ℃ and the pressure is 5-6MPa. Further, the pressing time is 20-30min.
In some preferred embodiments of the present invention, in the step (2), the pressing uses upper and lower steel plates, the lower steel plate is matt, and the upper steel plate has grains. Various textures can be pressed and pasted according to the requirements of customers, and various appearances and touch feeling can be obtained. The lower steel plate is matte surface and can increase the adhesive force between the melamine film plate and the SPC plate
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 polyoxyethylene ether; 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 invention, there is at least the following advantageous effect:
the invention prepares the hard melamine film plate with high toughness, good wear resistance, scratch resistance, stain resistance and optional grain and certain thickness by hot-pressing and molding the defective melamine impregnated film paper, impregnated parchment paper, finished melamine impregnated film paper and the wear-resistant layer in advance, and then presses the melamine film plate on the SPC substrate plate through cold glue to obtain the SPC decorative plate with high performance, various touch feeling and beautiful appearance, thereby avoiding the problem of softening the SPC plate caused by direct hot pressing. Meanwhile, waste melamine impregnated bond paper is used as a bearing layer in the melamine film plate, and waste is directly utilized without additional treatment, so that waste is avoided.
Compared with the traditional SPC board, the SPC board has the advantages that the SPC board is extruded into grains by the roller during plasticizing extrusion and roller forming, the hard melamine film board is prepared in the invention, any steel plate grains such as pitted surface, matte, highlight, suede, wood thorn grains and the like can be copied by hot pressing in advance, the richer surface texture is realized, and the wear-resisting and scratch-resisting grade is higher than that of the traditional SPC board, so that the SPC board can be applied to the ground decoration floor.
Detailed Description
The conception and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.
Example 1
The SPC decorative plate is prepared by the embodiment, wherein an SPC base material plate (comprising PVC resin powder, stone powder, a plasticizer, a stabilizer and carbon black, the thickness of the SPC base material plate is 5 mm), a cold glue layer and a melamine glue film plate are sequentially arranged from bottom to top, the melamine glue film plate is sequentially provided with a bearing layer, a toughness layer, a decoration layer and a wear-resistant layer, the bearing layer is defective melamine impregnated glue film paper, the decoration 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 impregnated parchment from bottom to top is: melamine formaldehyde resin layer, parchment paper, and melamine formaldehyde resin layer, the gram weight of parchment paper is 50g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the Impregnated parchment paper is made by the following process: adding 0.1% of dedusting agent, 0.2% of release agent, 0.2% of penetrating agent and 0.2% of curing agent into melamine formaldehyde resin in parts by weight, and stirring to obtain a tough layer impregnating slurry; dipping parchment paper into the tough layer dipping slurry, wherein the sizing amount is 35g/m 2 The impregnated parchment is sequentially passed through four sections of ovens with the temperature of 145 ℃, 160 ℃, 165 ℃ and 140 ℃ and the drying time of each section of oven is 7s, so that the impregnated parchment is obtained.
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, melamine resin layer, the gram weight of the printing paper is 90g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The finished melamine impregnated bond paper is prepared by the following method: adding 0.1% of penetrating agent and 0.1% of curing agent into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding 0.2% of dedusting agent, 0.2% of release agent and 0.3% of curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly soaked with the sizing agent of the urea-formaldehyde resin layer, and the sizing amount of the urea-formaldehyde resin layer is 55g/m 2 Passing through 4 sections of ovens with the temperature of 135 ℃, 150 ℃, 145 ℃ and 130 ℃ and the drying time of each section of oven being 5s, then rolling the slurry of the melamine resin layer up and down, wherein the sizing amount of the melamine resin layer is 30g/m 2 And then passing through 5 sections of ovens with the temperature of 135 ℃, 160 ℃, 165 ℃ and 130 ℃ and the drying time of each section of oven being 7s, thus obtaining the finished melamine impregnated bond paper.
The defective melamine impregnated bond paper is a defective product generated in the preparation process, or a defective product with paper surface cracking caused by collision of a forklift in the transportation process.
The structure of the impregnated balancing paper is as follows from bottom to top: wear-resistant melamine resin layer, balance paper and wear-resistant melamine resin layer, wherein the gram weight of the balance paper is 19g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The impregnated balancing paper is prepared by the following method: adding 35% of 100-200 mesh aluminum oxide, 0.2% of dedusting agent, 0.2% of release agent, 0.1% of penetrating agent and 0.1% of curing agent into melamine resin, stirring to obtain wear-resistant melamine resin slurry, impregnating balance paper into the wear-resistant melamine resin slurry, and sizing with the sizing amount of 50g/m 2 Sequentially passing through four sections of ovens with the temperature of 145 ℃, 160 ℃, 165 ℃ and 140 ℃ and the drying time of each section of oven is 6s, so as to obtain 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.
Preparation of SPC decorative plate: sequentially placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top, then entering a hot press, wherein the pressure of the hot press is 17MPa, the temperature of an upper steel plate is 160 ℃, the upper steel plate is provided with 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 film plate is obtained, and the thickness of the melamine film plate is 1.2mm; corona treatment is carried out on the surface of the SPC substrate board, then polyurethane glue is coated on the surface of the SPC substrate board, and the coating amount of the polyurethane glue is 18g/m 2 And then placing the melamine film plate on an SPC substrate plate, and pressing and pasting for 20min under the pressure of 6MPa at normal temperature to obtain the SPC decorative plate.
The viscosity of the polyurethane glue is that four cups are coated for 50 seconds, 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.
Comparative example 1
This comparative example produced an SPC decorative sheet, differing from example 1 in that melamine-impregnated bond paper was directly bonded to an SPC substrate sheet without producing a melamine film sheet, and the specific procedure was:
(1) Preparing melamine impregnated bond paper: adding 0.1% of penetrating agent and 0.1% of curing agent into urea-formaldehyde resin to obtain urea-formaldehyde resin layer slurry; adding 0.2% of dedusting agent, 0.2% of release agent and 0.3% of curing agent into melamine resin to obtain melamine resin layer slurry; the printing paper is firstly soaked with the sizing agent of the urea-formaldehyde resin layer, and the sizing amount of the urea-formaldehyde resin layer is 55g/m 2 Passing through 4 sections of ovens with the temperature of 135 ℃, 150 ℃, 145 ℃ and 130 ℃ and the drying time of each section of oven being 5s, then rolling the slurry of the melamine resin layer up and down, wherein the sizing amount of the melamine resin layer is 30g/m 2 Then passing through 5 sections of ovens with the temperature of 135 ℃, 160 ℃, 165 ℃ and 130 ℃ and the drying time of each section of oven being 7s to obtain melamine impregnated bond paper;
(2) Preparation of SPC decorative plate: corona treatment is carried out on the surface of the SPC substrate board, then polyurethane glue is coated on the surface of the SPC substrate board, and the coating amount of the polyurethane glue is 18g/m 2 And (3) adhering the melamine impregnated bond paper in the step (1) on an SPC substrate board, and pressing and pasting for 20min through the pressure of 6MPa at normal temperature to obtain the SPC decorative board.
The SPC decorative board prepared in this comparative example cannot be made into films with various properties due to the fact that melamine is not subjected to hot pressing, and since melamine film paper can be crosslinked and cured into a compact decorative film only under the hot pressing condition, the SPC decorative board of this comparative example has no excellent properties of a triamine film, and plays a role in protecting a printed layer.
Table 1 example 1 performance test of SPC decorative panels
Figure BDA0003510430510000071
Figure BDA0003510430510000081
While the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. The SPC decorative plate is characterized by sequentially comprising an SPC substrate 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 defective melamine impregnated bond paper, the decorative layer is finished melamine impregnated bond paper, the toughness layer is impregnated parchment paper, and the wear-resistant layer is impregnated balance paper; the thickness of the melamine film plate is 1.0-1.2mm.
2. The SPC decorative board of claim 1, wherein the impregnated parchment is a parchment impregnated with melamine formaldehyde resin.
3. The SPC decorative board as in claim 1, wherein the impregnated balancing paper is balancing paper impregnated with a wear resistant melamine resin containing aluminum oxide.
4. An SPC decorative board as claimed in claim 3, characterised in that said 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 dipping balance paper.
5. The SPC decorative board according to claim 1, characterized in that the structure of the defective melamine impregnated bond paper and/or the finished melamine impregnated bond paper is from bottom to top: melamine resin layer, urea resin layer, printing paper, urea resin layer, melamine resin layer.
6. The SPC decorative board of claim 5, wherein the finished melamine impregnated bond paper is made by the process of: 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 soaked in the urea resin layer sizing agent, after the first drying, the melamine resin layer sizing agent is coated on the upper and lower rollers, and then the second drying is carried out, so that the printing paper is obtained.
7. The method for preparing an SPC decorative board as claimed in any one of claims 1 to 4, comprising the steps of:
(1) Sequentially placing defective melamine impregnated bond paper, impregnated parchment paper, finished melamine impregnated bond paper and impregnated balance paper from bottom to top, and performing hot pressing to obtain a melamine film plate;
(2) And (3) firstly carrying out corona on the surface of the SPC substrate plate, then coating glue on the surface of the SPC substrate plate, then placing the melamine film plate on the SPC substrate plate, and carrying out press-fitting 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/m 2 。
9. The method according to claim 7, wherein in the step (1), the hot pressing is performed at a temperature of 150 to 160℃and a pressure of 15 to 18MPa.
10. The method according to claim 7, wherein in the step (2), the temperature of the press-fit is 20-30 ℃ and the pressure is 5-6MPa.
CN202210165160.6A 2022-02-18 2022-02-18 SPC decorative plate and preparation method thereof Active CN114654935B (en)

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