CN113370339B - Modified wood veneer laminated floor with balance layer removed and preparation method thereof - Google Patents

Modified wood veneer laminated floor with balance layer removed and preparation method thereof Download PDF

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Publication number
CN113370339B
CN113370339B CN202110525198.5A CN202110525198A CN113370339B CN 113370339 B CN113370339 B CN 113370339B CN 202110525198 A CN202110525198 A CN 202110525198A CN 113370339 B CN113370339 B CN 113370339B
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veneer
wood
base material
modified
drying
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CN113370339A (en
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黄东辉
唐道远
李磊
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Anhui Sentai Wpc Technology Floor Co ltd
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Anhui Sentai Wpc Technology Floor Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/24—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of wood, e.g. furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/06—Manufacture of central layers; Form of central layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D3/00—Veneer presses; Press plates; Plywood presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/32—Mixtures of different inorganic impregnating agents

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention relates to a modified veneer laminated floor with a balance layer removed and a preparation method thereof, belonging to the technical field of wood-plastic floors. A modified wood veneer laminated floor with a balance layer removed comprises a base material layer, an adhesive layer and a modified wood veneer layer, wherein the modified wood veneer layer is laminated on the base material layer through the adhesive layer; the base material layer is selected from a polyolefin wood-plastic base material or an SPC stone-plastic base material; the modified veneer layer is obtained by impregnating the veneer with sodium silicate solution, drying, impregnating with calcium chloride solution, drying and balancing. The invention provides a technical scheme that the floor is manufactured by modifying wood veneers and then compounding the wood veneers with a base material; the physical properties of the wood veneer are changed by modifying the wood veneer, so that wet expansion and dry shrinkage do not occur any more, and the dimensional stability of the wood veneer is improved; thereby solving the problem of large difference of physical properties between the natural veneer and the base material, and ensuring that the floor is not bent under various conditions of environment change when in normal use.

Description

Modified veneer laminated floor with balance layer removed and preparation method thereof
Technical Field
The invention relates to a modified veneer laminated floor with a balance layer removed and a preparation method thereof, belonging to the technical field of wood-plastic floors.
Background
The wood-plastic floor has the advantages of water resistance, corrosion resistance, no internal stress bending, low price and the like, and is generally suitable for various outdoor places such as terraces, park pavements, trestles, pavilions and the like. The main defects of the traditional wood-plastic floor are that the traditional wood-plastic floor has stronger plastic property, the performances in the aspects of foot feeling, touch feeling, surface flexibility and the like are far lower than those of natural wood, and the use texture is poor; meanwhile, the wood-plastic floor is poor in visual texture, so that the product grade of the wood-plastic floor is low, and the market competitiveness is lacked.
In order to solve the texture problem, people propose a technical scheme of attaching high-grade natural wood veneer to a wood-plastic base material. However, the wood-plastic base material and the wood skin have great difference in mechanical properties, so that the product is cracked or bent to a greater extent.
The problem of floor bending is further solved by attaching a balancing layer to the bottom of the floor. However, the proposal is patented by foreign companies, and the production of the product needs to pay large amount of patent cost, so that the cost is remarkably increased and the market competitiveness is low. Therefore, there is a need in the art for a wood-veneer-faced wood-plastic flooring that is effective against bending without providing a balancing layer.
Disclosure of Invention
The present invention has been accomplished on the basis of the finding that when wood veneer is impregnated with a sodium silicate solution and then with a calcium chloride solution, the properties of the wood veneer can be unexpectedly changed so that the dimensional stability of the wood veneer is remarkably improved.
It is therefore an object of the present invention to provide a modified veneer flooring with a balancing layer. The floor board eliminates the design of a bottom balancing layer and does not influence the size stability of the floor board.
The technical scheme for solving the problems is as follows:
a modified wood veneer laminated floor with a balance layer removed comprises a base material layer, an adhesive layer and a modified wood veneer layer, wherein the modified wood veneer layer is laminated on the base material layer through the adhesive layer; the base material layer is selected from a polyolefin wood-plastic base material or an SPC stone-plastic base material; the modified wood skin layer is obtained by impregnating raw wood skin with a sodium silicate solution, drying, impregnating with a calcium chloride solution, and drying and balancing.
In the technical scheme of the invention, the polyolefin wood-plastic base material is a plate prepared by using polyolefin resin as a raw material, adding plant fiber powder and a processing aid such as a release agent into the raw material and performing a hot extrusion process. Of course, a small amount of fillers and functional auxiliaries, such as calcium carbonate, and functional auxiliaries such as ultraviolet absorbers, antioxidants, wear-resisting agents and the like, can be added into the raw materials to endow the wood-plastic base material with better performance.
In the technical scheme of the invention, the SPC stone-plastic substrate is a plate prepared by taking polyvinyl chloride as a raw material, adding a large amount of fillers and processing aids into the polyvinyl chloride, wherein the fillers comprise calcium carbonate, and the processing aids comprise a release agent and the like through a hot extrusion process.
Preferably, the thickness of the modified wood skin layer is 0.8-1.6 mm.
Preferably, in the above technical scheme, the adhesive layer is formed by curing a polyolefin hot melt adhesive or a polyurethane adhesive.
Another object of the present invention is to provide a method for manufacturing the above floor.
A preparation method of a modified veneer laminated floor with a balance layer removed comprises the following steps:
s1, obtaining a veneer, dipping the veneer in a sodium silicate solution, drying, dipping the veneer in a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the calcium chloride solution, adjusting the pH value of the calcium chloride solution to 9-12;
s2, obtaining a base material, and firstly polishing the base material; then coating an adhesive on the modified veneer;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking a plurality of plate blanks to form a plate blank group, stacking the plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 8-20 MPa, and maintaining the pressure for more than 2 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor in a curing room for 1-5 days to obtain a primary floor finished product; the temperature of the balance room is set to be 18-30 ℃;
s5, coating UV wear-resistant primer on the surface of the primary floor finished product, and then carrying out photocuring treatment; and then coating UV wear-resistant finish paint, and carrying out photocuring treatment.
According to the technical scheme, the wood veneer is soaked by using a sodium silicate solution, and the soaking degree is based on soaking; the advantages of impregnating the sodium silicate solution are not only that the wood veneer is endowed with certain corrosion resistance, but also that the sodium silicate solution is used as a reactive component to permeate into the wood veneer; drying, then dipping by using a calcium chloride solution, enabling calcium silicate and calcium chloride to react in the wood veneer under an alkaline environment to generate hydrated calcium silicate inorganic gel, and then gradually hardening the inorganic gel; once the inorganic gel is hardened, the conduit inside the veneer is blocked, so that strong water absorption is difficult to occur, and meanwhile, the veneer is shaped and is difficult to expand or contract under the action of moisture and temperature as the hard inorganic gel is filled inside the veneer; meanwhile, the hard inorganic gel is filled in the wood veneer, so that the wood veneer is hardened to a certain degree, and the wear resistance of the floor is improved.
The invention provides a technical scheme that wood skin is modified and then is compounded with a base material to prepare a wood skin veneered floor; the wood veneer is modified, so that the physical properties of the wood veneer are changed, the wet expansion and dry shrinkage are avoided, and the dimensional stability of the wood veneer is improved; therefore, the problem of large difference of physical properties between the natural veneer and the base material is solved, and the floor is not warped under various conditions of environmental change when being normally used. The invention mainly aims at the polyolefin wood-plastic base material and SPC wood-plastic base material, but the technical scheme of the invention is not suitable for other base materials; on the contrary, the invention is suitable for various base materials, even metal base materials such as aluminum alloy sections and the like are also suitable.
According to the technical scheme, the wood-plastic base material is polished, so that the bonding strength between the base material and the surface layer of the veneer can be obviously improved.
Preferably, before gluing, one surface of the bonding base material of the modified veneer is subjected to corona treatment, the current during corona is controlled to be 4-6A, 1-2 times of corona are carried out, and the phenomenon of agglomeration and discontinuity of marks marked by a No. 42 corona pen are avoided.
Preferably, the sodium silicate solution comprises the following components in parts by mass: 5-10 parts of sodium silicate and 30-60 parts of water; the calcium chloride solution comprises the following components in parts by mass: 30-50 parts of calcium chloride and 40-60 parts of water; the dipping time of the sodium silicate solution is 1-4 h; the dipping time of the calcium chloride solution is 0.5-2 h.
Preferably, the sodium silicate solution further comprises the following components in parts by mass: 3-5 parts of nano aluminum silicate and 2-4 parts of nano pigment; the dipping time of the sodium silicate solution is 3-4 h.
In the technical scheme of the invention, the nano aluminum silicate has good suspension property and good opalescence and light scattering property; not only can promote the suspension stability of the nano pigment in the solution, but also can better provide the color lining effect for the nano pigment, and is more convenient in color blending.
Preferably, the wood veneer is pretreated before being soaked in the sodium silicate solution, specifically, the wood veneer is soaked in the pretreatment solution for 12-72 hours; the pretreatment solution comprises the following components in parts by mass: 3-5 parts of hydrogen peroxide, 1-2 parts of sodium silicate, 0.1-0.2 part of defoaming agent and 10-100 parts of water.
According to the technical scheme, the wood veneer is pretreated by the hydrogen peroxide solution, so that on one hand, some stained stains on the wood veneer can be removed, and on the other hand, the wood veneer can help to dredge a conduit. Sodium silicate is mainly used as a stabilizer for hydrogen peroxide to avoid its rapid decomposition. The use of the defoaming agent can obviously reduce the foam generated in the wood veneer pretreatment process; the defoaming agent can be an optional surfactant such as polydimethylsiloxane, polyether, and the like. When some organic components containing amino groups, ether groups, carbonyl groups, hydrocarbon groups, carboxyl groups, aromatic groups or aliphatic hydrocarbon groups in the veneer are released into water during the impregnation of the veneer, a large amount of foam can be generated without accumulating too much; and the addition of a proper defoaming agent can avoid the generation of a large amount of foam.
Preferably, the nano aluminum silicate is prepared by neutralizing, precipitating and drying aluminum metasilicate and acidic silica sol to obtain crystalline aluminum silicate, adding a mineralizer, calcining to obtain anhydrous aluminum silicate, adding a grinding aid, and performing ball milling and grading.
In the technical scheme of the invention, compared with nano aluminum silicate prepared by other methods, the chemical precipitation method has better suspension property in sodium silicate solution, and can promote the suspension stability of the nano pigment by using less amount.
Preferably, in the step S1, the drying balance is that the drying treatment is performed in a drying kiln to control the moisture content of the veneer to 5-8%, and then the veneer is transferred to a balance room for balance treatment for 3-5 days; the temperature of the balance room is 20-30 ℃, and the relative humidity is 30-50%.
In conclusion, the invention has the following beneficial effects:
1. according to the invention, the wood skin is shaped by modifying the wood skin, and does not expand due to water absorption, so that the floor formed by compounding the wood skin with the wood-plastic base material has good dimensional stability under the condition of not using a balance layer;
2. according to the invention, the wood veneer is pretreated by the hydrogen peroxide solution, so that the permeability of the wood veneer conduit is improved, and the impregnation efficiency is improved when the wood veneer is impregnated with the sodium silicate;
3. according to the invention, sodium silicate and calcium chloride react under an alkaline condition to generate calcium silicate hydrate inorganic gel, so that the hardened veneer has good dimensional stability and the wear resistance of the veneer is improved;
4. when the wood veneer is impregnated with sodium silicate, the nano aluminum silicate and the nano pigment are simultaneously used, so that the wood veneer is colored from the inside, and compared with the wood veneer colored on the surface, the wood veneer can be endowed with better color and luster, and the color reality is visually improved.
Detailed Description
This detailed description is to be construed as illustrative only and is not limiting, since various modifications will become apparent to those skilled in the art after reading the present specification, and the scope of the appended claims is to be protected by the following claims.
Example one
The utility model provides a modified wood skin laminating floor on desquilibrium layer, includes that PE wood moulds substrate layer, gluing agent layer and modified wood cortex, modified wood cortex passes through gluing agent layer laminate be in the substrate layer on. The modified wood veneer adopts purchased black walnut wood veneer as raw wood veneer, and is firstly soaked by sodium silicate solution, then soaked by calcium chloride solution after being dried, and dried and balanced to obtain the modified wood veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood bark is wetted. The thickness of the veneer is 1.2 mm. The thickness of the wood-plastic base material is 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, taking a veneer, soaking the veneer in a sodium silicate solution, drying, soaking the veneer in a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that firstly, the drying treatment is carried out in a drying kiln to control the moisture content of the wood bark at 6% +/-1%, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, obtaining a PE wood-plastic base material, and firstly polishing the base material; then mixing the components AB of the polyurethane adhesive, uniformly stirring, pouring into a rubber roller machine, and adjusting the glue application amount by adjusting the gap between the rubber roller and a smooth roller, wherein the glue application amount of the veneer is controlled to be 110-120 g/square meter in the embodiment;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, obtaining a semi-finished floor product;
s4, placing the semi-finished floor in a curing room, wherein the temperature of the curing room is set at 25 ℃, and placing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this embodiment, the sodium silicate solution includes: 1000g of sodium silicate, 5000g of water, 500g of nano aluminum silicate, 50g of titanium white, 60g of iron oxide red, 30g of permanent yellow and 10g of pigment black; the dipping time of the sodium silicate solution is 3 h;
the calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
Example two
The utility model provides a modified wood skin laminating floor on desquilibrium layer, includes that PE wood moulds substrate layer, gluing agent layer and modified wood cortex, modified wood cortex passes through gluing agent layer laminate be in the substrate layer on. The modified veneer is prepared by using purchased black walnut veneer as raw veneer, soaking the raw veneer in a sodium silicate solution, drying the raw veneer, soaking the raw veneer in a calcium chloride solution, and drying and balancing the raw veneer to obtain the modified veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood bark is wetted. The thickness of the veneer is 1.2 mm. The thickness of the wood-plastic base material is 5.8 mm.
In this example, the thickness of the veneer was 1.2 mm. The wood-plastic base material is the same as the first embodiment, and the thickness is 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, treating the wood veneer by using the pretreatment solution, drying, impregnating the wood veneer by using a sodium silicate solution, drying, impregnating by using a calcium chloride solution, drying and balancing to obtain a modified wood veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that firstly, the drying treatment is carried out in a drying kiln to control the moisture content of the wood bark at 6% +/-1%, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking a PE wood-plastic base material, and firstly polishing the base material; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this embodiment, the pretreatment solution comprises the following components in parts by mass: 500g of hydrogen peroxide, 150g of sodium silicate, 10g of aliphatic polyoxyethylene ether and 10kg of water; the dipping time of the pretreatment solution is 24 h.
The sodium silicate solution comprises: 1000g of sodium silicate, 5000g of water, 500g of nano aluminum silicate, 50g of titanium white, 60g of iron oxide red, 30g of permanent yellow and 10g of pigment black; the dipping time of the sodium silicate solution is 3 h.
The calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
EXAMPLE III
The utility model provides a modified veneer laminating floor of desquilizing layer, includes PE wood-plastic substrate layer, gluing agent layer and modified wood cortex, modified wood cortex passes through gluing agent layer laminating be in the substrate layer on. The modified veneer is prepared by using purchased black walnut veneer as raw veneer, soaking the raw veneer in a sodium silicate solution, drying the raw veneer, soaking the raw veneer in a calcium chloride solution, and drying and balancing the raw veneer to obtain the modified veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted. The thickness of the veneer is 1.2 mm. The thickness of the wood-plastic base material is 5.8 mm.
In this example, the thickness of the veneer was 1.2 mm. The wood-plastic base material is the same as the first embodiment, and the thickness is 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, treating the wood veneer by using the pretreatment solution, drying, impregnating the wood veneer by using a sodium silicate solution, drying, impregnating by using a calcium chloride solution, drying and balancing to obtain a modified wood veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking a PE wood-plastic base material, and firstly polishing the base material; performing corona treatment on one surface, attached to the base material, of the modified veneer, wherein the current during corona is controlled to be 4-6A, 1-2 times of corona is performed, and the mark marked by a No. 42 corona pen does not have a condensation phenomenon or a discontinuity phenomenon; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the modified wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In the embodiment, the pretreatment solution comprises the following components in parts by mass: 500g of hydrogen peroxide, 150g of sodium silicate, 10g of aliphatic polyoxyethylene ether and 10kg of water; the dipping time of the pretreatment solution is 24 h.
The sodium silicate solution comprises: 1000g of sodium silicate and 5000g of water; the dipping time of the sodium silicate solution is 3 h.
The calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
Comparative example 1
A wood-plastic floor comprises a wood-plastic base material and a veneer attached to the wood-plastic base material. The wood veneer is prepared by slicing black walnut raw wood, soaking with sodium silicate solution, drying and balancing. The thickness of the veneer is 1.2 mm. The substrate was the same as in example one and had a thickness of 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, dipping the wood veneer by using a sodium silicate solution, and drying and balancing to obtain a modified wood veneer; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking a PE wood-plastic base material, and firstly polishing the base material; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, obtaining a semi-finished floor product;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this comparative example, the sodium silicate solution comprises: 1000g of sodium silicate and 5000g of water; the dipping time of the sodium silicate solution is 3 h.
Example four
The utility model provides a modified veneer laminating floor on desquilizing layer, moulds substrate layer, gluing agent layer and modified wood cortex including SPC stone, modified wood cortex passes through gluing agent layer laminating be in the substrate layer on. The modified wood veneer adopts purchased black walnut wood veneer as raw wood veneer, and is firstly soaked by sodium silicate solution, then soaked by calcium chloride solution after being dried, and dried and balanced to obtain the modified wood veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood bark is wetted. The thickness of the veneer is 1.2 mm. The thickness of the SPC stone plastic substrate is 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, taking a veneer, soaking the veneer in a sodium silicate solution, drying, soaking the veneer in a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, obtaining an SPC stone-plastic base material, and firstly polishing the base material; then mixing the components AB of the polyurethane adhesive, uniformly stirring, pouring into a rubber roller machine, and adjusting the glue application amount by adjusting the gap between the rubber roller and a smooth roller, wherein the glue application amount of the veneer is controlled to be 110-120 g/square meter in the embodiment;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, obtaining a semi-finished floor product;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this embodiment, the sodium silicate solution includes: 1000g of sodium silicate, 5000g of water, 500g of nano aluminum silicate, 50g of titanium white, 60g of iron oxide red, 30g of permanent yellow and 10g of pigment black; the dipping time of the sodium silicate solution is 3 h;
the calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
EXAMPLE five
The utility model provides a modified wood skin laminating floor on desquilibrium layer, moulds substrate layer, gluing agent layer and modified wood cortex including SPC stone, modified wood cortex passes through gluing agent layer laminate be in the substrate layer on. The modified veneer is prepared by using purchased black walnut veneer as raw veneer, soaking the raw veneer in a sodium silicate solution, drying the raw veneer, soaking the raw veneer in a calcium chloride solution, and drying and balancing the raw veneer to obtain the modified veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted. The thickness of the veneer is 1.2 mm. The thickness of the SPC stone plastic substrate is 5.8 mm.
In this example, the thickness of the veneer was 1.2 mm. The SPC stone substrate was the same as in example one and had a thickness of 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, treating the veneer with the pretreatment solution, drying, impregnating the veneer with a sodium silicate solution, drying, impregnating with a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking an SPC stone plastic base material, and firstly polishing the base material; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this embodiment, the pretreatment solution comprises the following components in parts by mass: 500g of hydrogen peroxide, 150g of sodium silicate, 10g of aliphatic polyoxyethylene ether and 10kg of water; the dipping time of the pretreatment solution is 24 h.
The sodium silicate solution comprises: 1000g of sodium silicate, 5000g of water, 500g of nano aluminum silicate, 50g of titanium white, 60g of iron oxide red, 30g of permanent yellow and 10g of pigment black; the dipping time of the sodium silicate solution is 3 h.
The calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
EXAMPLE six
The utility model provides a modified veneer laminating floor on desquilizing layer, moulds substrate layer, gluing agent layer and modified wood cortex including SPC stone, modified wood cortex passes through gluing agent layer laminating be in the substrate layer on. The modified wood veneer adopts purchased black walnut wood veneer as raw wood veneer, and is firstly soaked by sodium silicate solution, then soaked by calcium chloride solution after being dried, and dried and balanced to obtain the modified wood veneer; during the impregnation process of the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood bark is wetted. The thickness of the veneer is 1.2 mm. The thickness of the SPC stone plastic substrate is 5.8 mm.
In this example, the thickness of the veneer was 1.2 mm. The SPC stone substrate was the same as in example one and had a thickness of 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, treating the veneer with the pretreatment solution, drying, impregnating the veneer with a sodium silicate solution, drying, impregnating with a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the wood veneer in the calcium chloride solution, the pH value of the calcium chloride solution is adjusted to 10 by using sodium hydroxide after the wood veneer is wetted; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking an SPC stone plastic base material, and firstly polishing the base material; performing corona treatment on one surface, attached to the base material, of the modified veneer, wherein the current during corona is controlled to be 4-6A, 1-2 times of corona is performed, and the mark marked by a No. 42 corona pen does not have a condensation phenomenon or a discontinuity phenomenon; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the modified wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified wood veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor into a curing room, setting the temperature of the curing room at 25 ℃, and standing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this embodiment, the pretreatment solution comprises the following components in parts by mass: 500g of hydrogen peroxide, 150g of sodium silicate, 10g of aliphatic polyoxyethylene ether and 10kg of water; the dipping time of the pretreatment solution is 24 h.
The sodium silicate solution comprises: 1000g of sodium silicate and 5000g of water; the dipping time of the sodium silicate solution is 3 h.
The calcium chloride solution comprises: 5000g of calcium chloride and 5000g of water; the dipping time of the calcium chloride solution is 1 h.
Comparative example No. two
An SPC stone-plastic floor comprises an SPC stone-plastic substrate and a veneer attached to the SPC stone-plastic substrate. The wood veneer is prepared by slicing black walnut raw wood to prepare raw wood veneer, soaking the raw wood veneer in a sodium silicate solution, and drying and balancing the raw wood veneer. The thickness of the veneer is 1.2 mm. The substrate was the same as comparative example one, with a thickness of 5.8 mm.
The preparation method of the wood-plastic floor comprises the following steps:
s1, dipping the wood veneer by using a sodium silicate solution, and drying and balancing to obtain a modified wood veneer; the drying balance is that the drying treatment is firstly carried out in a drying kiln to control the moisture content of the wood bark to be 6 +/-1 percent, and then the wood bark is transferred into a balance room to be balanced for 3 days; the temperature of the balance room is 25 ℃, and the relative humidity is 50%;
s2, taking an SPC stone plastic base material, and firstly polishing the base material; then polyurethane adhesive is prepared, the AB two components are poured into an adhesive roller machine after being uniformly stirred, the adhesive coating amount is adjusted by adjusting the gap between the adhesive roller and a smooth roll, and in the embodiment, the adhesive coating amount of the wood veneer is controlled to be 110-120 g/square meter;
s3, sticking the modified wood veneer coated with the adhesive on the polished base material to form a plate blank; stacking 20 plate blanks to form a plate blank group, stacking 10 plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 12MPa, and maintaining the pressure for 4 hours; after the pressure maintaining is finished, a semi-finished floor product is obtained;
s4, placing the semi-finished floor in a curing room, wherein the temperature of the curing room is set at 25 ℃, and placing for 2 days to obtain a primary floor finished product;
s5, coating UV wear-resistant primer on the modified veneer, and then carrying out photocuring treatment; and then coating a UV wear-resistant finish paint, and then carrying out photocuring treatment.
In this comparative example, the sodium silicate solution comprises: 1000g of sodium silicate and 5000g of water; the soaking time of the sodium silicate solution is 3 hours
The following tests were performed on the PE wood plastic flooring of examples one to three and comparative example one, and the test results are shown in the following table.
Figure DEST_PATH_IMAGE002
The following tests were performed on the SPC stone plastic flooring of examples four to six and comparative example two, and the test results are shown in the following table.
Figure DEST_PATH_IMAGE004

Claims (4)

1. A preparation method of a modified veneer laminated floor with a balance layer removed comprises the following steps:
s1, obtaining a veneer, dipping the veneer in a sodium silicate solution, drying, dipping the veneer in a calcium chloride solution, and drying and balancing to obtain a modified veneer; in the process of dipping the calcium chloride solution, adjusting the pH value of the calcium chloride solution to 9-12;
s2, obtaining a base material, polishing the base material, and coating the modified veneer with an adhesive;
s3, sticking the modified veneer coated with the adhesive on the polished base material to form a plate blank; stacking a plurality of plate blanks to form a plate blank group, stacking the plate blank groups on a bearing plate of a cold press, arranging a buffer cushion between the plate blank groups, setting the pressure of the cold press at 8-20 MPa, and maintaining the pressure for more than 2 hours; after the pressure maintaining is finished, obtaining a semi-finished floor product;
s4, placing the semi-finished floor in a curing room for 1-5 days to obtain a primary floor finished product; the temperature of the health preserving room is set to 18-30 ℃;
s5, coating UV wear-resistant primer on the surface of the primary floor product, and then carrying out photocuring treatment; then coating UV wear-resistant finish paint, and carrying out photocuring treatment;
the sodium silicate solution comprises the following components in parts by mass: 5-10 parts of sodium silicate, 3-5 parts of nano aluminum silicate, 2-4 parts of nano pigment and 30-60 parts of water; the calcium chloride solution comprises the following components in parts by mass: 30-50 parts of calcium chloride and 40-60 parts of water; the dipping time of the sodium silicate solution is 3-4 h; the calcium chloride solution is soaked for 0.5-2 hours;
the wood veneer is also pretreated before being soaked in the sodium silicate solution, specifically, the wood veneer is soaked in a pretreatment solution for 12-72 hours; the pretreatment solution comprises the following components in parts by mass: 3-5 parts of hydrogen peroxide, 1-2 parts of sodium silicate, 0.1-0.2 part of defoaming agent and 10-100 parts of water.
2. The method of claim 1, wherein the step of removing the balance layer comprises: the adhesive is polyurethane adhesive or polyolefin hot melt adhesive.
3. The method of claim 1, wherein the method comprises the steps of: the nano aluminum silicate is prepared by neutralizing, precipitating and drying aluminum metasilicate and acidic silica sol to obtain crystalline aluminum silicate, adding a mineralizer, calcining to obtain anhydrous aluminum silicate, adding a grinding aid, and performing ball milling and grading.
4. The method of claim 1, wherein the step of removing the balance layer comprises: drying and balancing in the step S1, namely, firstly, drying in a drying kiln to control the moisture content of the veneer to be 5-8%, then transferring the veneer into a balancing room, and balancing for 3-5 days; the temperature of the balance room is 20-30 ℃, and the relative humidity is 30-50%.
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