CN212574521U - Wooden board - Google Patents
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- CN212574521U CN212574521U CN201922185663.6U CN201922185663U CN212574521U CN 212574521 U CN212574521 U CN 212574521U CN 201922185663 U CN201922185663 U CN 201922185663U CN 212574521 U CN212574521 U CN 212574521U
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Abstract
The utility model discloses a wooden board. The wood board comprises a wood base material, a silane coupling layer and a UV coating, wherein the silane coupling layer is arranged between the wood base material and the UV coating. The thickness of the wood base material is 5-100 mm, the thickness of the silane coupling layer is 17-23 mu m, and the thickness of the UV coating is 150-160 mu m. The utility model discloses a UV composite coating is 2.21~10.46 MPa with the bonding strength on wooden substrate surface in the wooden board, has improved the adhesive force of UV composite coating on wooden substrate, has solved the problem that the UV coating is easy to crack and drop on wooden substrate surface.
Description
Technical Field
The utility model belongs to the woodwork field, more specifically relates to a wooden board.
Background
Currently, the processing output value of the wood industry in China exceeds 2 trillion, and the annual commodity wood trade volume reaches 1.7 billion m3The wood consumption exceeds 6 hundred million m3. The production and sale of the wood product industry keep rising, particularly in the wood product customized furniture industry, the annual sales income of brand enterprises is increased by more than 30%, and personalized customization becomes a current trend of the wood material furniture industry and the future trend. The traditional surface decoration of wood materials is mainly divided into three categories, namely a mechanical processing method, a veneering decoration method and a finishing method. Wherein the mechanical processing mainly realizes the processing of a three-dimensional modeling structure; the veneer decoration mainly comprises veneer veneers, resin and resin impregnated paper veneers and veneers of other materials; the coating decoration mainly comprises coating decoration, traditional printing, powder spraying and the like. The traditional wood product surface decoration processes can realize certain decoration effect by combination and collocation, but have the problems of complex process flow, higher cost of manpower and material resources, environmental pollution and harm to the health of users to a certain extent in different degrees, and are difficult to realize the customization requirement of personalized decoration.
With the progress of UV photocuring technology and printing technology, the UV digital jet printing technology starts to be widely applied to the surface decoration of wooden furniture by the technical characteristics of immediate printing without plate making and digital image processing, so that the low efficiency, high cost and high pollution of the traditional wooden furniture surface decoration are well overcome, the private customization requirements of each user can be well met, the rapid customization production of plane and three-dimensional patterns on the surface of furniture is realized, and meanwhile, the environmental protection technology with zero VOCs emission is used for ensuring that the health damage is not caused to the production and the user. However, the application of the UV digital jet printing technology to the surface decoration of wooden furniture also has some problems that need to be solved, for example, because the dry shrinkage and wet expansion coefficients of the wooden base material and the UV digital jet printing coating are different, the coating is easy to crack and fall off when the environmental temperature and humidity change. Therefore, ensuring excellent interface bonding strength between the UV digital jet printing coating and the wooden product substrate is a prerequisite condition for the UV digital jet printing technology to be widely applied to surface decoration of wooden product furniture, and is a problem to be solved at present.
Chinese patent CN 102582246B discloses a UV digital jet printing manufacturing method for floor and furniture plate type components, which comprises the following concrete steps: 1. manufacturing a digital jet printing pattern decorative drawing; 2. preparing a base material; 3. coating water-based bottom sealing putty; 4. digitally spray-printing a UV decorative layer; 5. coating a UV primer layer; 6. and coating a UV finishing coat. According to the method, the UV primer and the UV finish paint are coated on the UV digital spray printing coating, and the UV paint protective layer is formed on the surface of the UV digital spray printing coating, so that the problems of cracking and falling of the UV digital spray printing coating can be solved.
Chinese patent CN 102936450B discloses a UV ink bridging agent and application thereof, and the concrete implementation steps are as follows: 1. mixing resin, a curing agent and a solvent in proportion to obtain a bridging agent; 2. filling the bridging agent into spraying equipment for spraying, so that the bridging agent is sprayed on the furniture panel after cleaning and drying; 3. drying the furniture panel sprayed with the bridging agent for more than 30 minutes at normal temperature; 4. and carrying out UV ink-jet printing on the dried furniture panel. The method improves the adhesive force of the UV digital spray printing coating on the surface of the melamine panel, but the used bridging agent has complex components, can not form effective chemical bond interface combination with the melamine panel, and has insufficient durability of the enhancement effect of the interface combination.
U.S. Pat. No. 3, 20060275590, 1 discloses a method for printing UV-curable ink on a substrate, which comprises the following steps: 1. treating a substrate for printing; 2. applying an acrylic-polyurethane coating mixture to the surface of the substrate; 3. applying a background color to the substrate surface; 4. curing the treated substrate surface; 5. and (3) spraying and painting the designed pattern on the surface of the base material by using a UV curing ink-jet printer. The method improves the adhesive force of the UV digital spray printing coating on the base material including the wood material, but for the wood base material, the method firstly coats a layer of sealant on the surface of the wood base material to treat the surface of the base material, then coats a layer of acrylic acid-polyurethane coating on the surface, and carries out UV digital spray printing after curing, thereby not only increasing the process steps, but also being incapable of forming effective chemical bond connection between the wood base material and the UV coating, and the interface bonding is easy to damage.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects and shortcomings existing in the prior art, a wood board is provided. The three-layer structure formed by connecting the layers of the wooden board by chemical bonds overcomes the problem that the wooden base material and the digital spray printing UV coating are easy to crack and fall off in the prior art, and is favorable for realizing the development trend of high efficiency, low cost, environmental protection and customization of the wooden product surface decoration process.
The utility model discloses a following technical scheme realizes:
a wood-based panel comprising a wood-based substrate, a silane coupling layer and a UV coating, the silane coupling layer being between the wood-based substrate and the UV coating.
Preferably, the thickness of the wood base material is 5-100 mm, the thickness of the silane coupling layer is 17-23 μm, and the thickness of the UV coating layer is 150-160 μm.
Preferably, the wood substrate is birch, masson pine, plywood, fiberboard, fraxinus mandshurica or poplar.
Preferably, the UV coating is an acrylate based layer.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a wooden board utilizes silane coupling agent to handle wooden substrate surface, make and pass through silane coupling agent bonding between UV coating and the wooden substrate interface, form the three layer construction with chemical bond connection between the layer, improve the bonding strength of UV composite coating and wooden substrate surface from untreated 1.10~1.48 MPa to the 2.21~10.46 MPa after handling, improved the adhesive force of UV composite coating on wooden substrate, the problem that UV coating is easy to crack and drop on wooden substrate surface has been solved.
2. The utility model discloses a low and environmental protection of wooden board's preparation cost.
3. The utility model discloses an wooden board is used in the preparation of woodwork furniture, has solved the technical problem that the woodwork is easy to split and drops.
Drawings
Fig. 1 is a schematic structural diagram of a wooden board of the present invention.
Fig. 2 is a diagram showing the mechanism of the preparation of the wooden board of the present invention (taking gamma-methacryloxypropyltrimethoxysilane as an example).
Fig. 3 is a schematic view of the method for testing interlayer bonding strength of a wood board according to the present invention.
Detailed Description
The following examples are presented to further illustrate the present invention but should not be construed as limiting the invention.
The model of the UV spray painting curing machine adopted in the embodiment of the utility model is Anderson EcoRjet-2512; the used acrylate-based UV photocuring ink is Jintian Haomai P272-6-02-0042128024, and comprises the following components in parts by weight: 10-50 parts of alkyl acrylate, 5-40 parts of 1, 6-hexanediol diacrylate, 1-5 parts of 2,4, 6-trimethylbenzoyl, 1-5 parts of 2-hydroxy-4-hydroxyethyl-2-methyl propiophenone, 1-10 parts of 2-methyl-1- (4-methylthiophenyl) -2-morpholine-1-one and 3-5 parts of pigment.
Fig. 1 is a schematic structural diagram of a wooden board of the present invention. And curing a silane coupling layer on the surface of the wood material substrate, and then printing a UV coating. Fig. 2 is a diagram showing the mechanism of the preparation of the wooden board of the present invention (taking gamma-methacryloxypropyltrimethoxysilane as an example). The preparation mechanism is divided into 4 steps: (1) hydrolyzing the silane coupling agent to generate hydroxyl; (2) self-condensation of silane coupling agent; (3) the hydroxyl end of the silane coupling agent and the hydroxyl on the surface of the wood substrate form hydrogen bonds and chemical bonds; (4) and a carbon-carbon double bond at the other end of the silane coupling agent participates in the curing of the UV digital spray printing coating, and the UV digital spray printing coating and the surface of the wood substrate form a chemical bond through the silane coupling agent and are tightly connected together.
Example 1
1. Preparing and humidifying a wood base material: cutting birch base material (surface roughness of 3.5 μm) into pieces of 20mm × 20mm × 10mm (chord × longitudinal × diameter), and adjusting equilibrium water content of birch base material to 10% at 25 deg.C and 65% relative humidity
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% of gamma-methacryloxypropyltrimethoxysilane, 14 Wt% of deionized water, 55 Wt% of absolute ethyl alcohol and 1 Wt% of glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: the silane coupling agent treatment agent was added at a rate of 0.1 kg/m2Uniformly brushing the birch base material on the surface of the birch base material, heating the birch base material at 103 ℃ for 3 hours, and then adjusting the equilibrium water content of the birch base material to 10% under the conditions that the temperature is 25 ℃ and the relative humidity is 65%.
UV digital jet printing: and (3) spray-printing acrylate-based UV photocuring ink on the surface of the treated birch base material by using a UV spray-printing curing machine, and standing at room temperature for 24 hours after UV curing at 15 ℃, namely, digitally spray-printing a UV composite coating with high adhesive force on the surface of the birch base material, wherein the UV composite coating has a structure of birch wood base material/silane coupling layer/UV coating. The thickness of the wood base material is 10mm, the thickness of the silane coupling layer is 17 mu m, and the thickness of the UV coating layer is 150 mu m.
Fig. 3 is a schematic diagram of a method for testing interlayer bonding strength of a wood board according to the present invention. During testing, the upper end and the lower end of a test piece are vertically bonded to the upper drawing die and the lower drawing die through isocyanate adhesive, and the dies are drawn in a vertical direction at a certain speed until the interface combination between the UV digital jet printing coating and the wood base material is damaged. And calculating the interface bonding strength through the maximum force of the interface damage and the interface bonding area.
And (3) performance testing: and (3) using the birch base material test piece attached with the digital jet printing UV coating as the surface bonding strength to determine the adhesive force of the digital jet printing UV coating. The adhesion between the digital jet printing UV composite coating and the surface of the birch base material is measured by referring to GB/T5210-2006/ISO 4624:2002 adhesion test by paint and varnish pulling method. The surface bonding strength of the obtained digital jet printing UV coating on the base material is 10.46 MPa.
Example 2
1. Preparing and humidifying a wood base material: cutting a masson pine substrate (surface roughness of 3.6 μm) into pieces of 20mm × 20mm × 100mm (chord × longitudinal × diameter), and adjusting the equilibrium water content of the masson pine substrate to 9% under the conditions of 25 deg.C and 65% relative humidity
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% 3- (trimethylsilyl) acrylate, 14 Wt% deionized water, 55 Wt% absolute ethyl alcohol, and 1 Wt% glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: the silane coupling agent treatment agent was added at a rate of 0.1 kg/m2Uniformly brushing the mixture on the surface of a masson pine substrate, heating the mixture at 103 ℃ for 3 hours, and then adjusting the equilibrium moisture content of the wood substrate to 10% under the conditions that the temperature is 25 ℃ and the relative humidity is 65%.
4. UV digital jet printing: and (3) jet-printing acrylate-based UV photocuring ink on the surface of the treated masson pine substrate by using a UV jet-printing curing machine, curing the ink at the temperature of 30 ℃ and then placing the cured ink at room temperature for 24 hours, so that the digital jet-printing UV composite coating with high adhesive force on the surface of the masson pine substrate is formed by a masson pine wood substrate/a silane coupling layer/a UV coating. The thickness of the wood substrate is 100mm, the thickness of the silane coupling layer is 23 μm, and the thickness of the UV coating layer is 160 μm.
And (3) performance testing: and (3) using the pinus massoniana substrate test piece attached with the digital jet printing UV coating as the adhesive force for measuring the surface bonding strength of the digital jet printing UV coating. The adhesive force of the spray printing UV composite coating and the surface of the Pinus massoniana substrate is measured by referring to GB/T5210-.
Example 3
1. Preparing and humidifying a wood base material: sawing a plywood substrate (surface roughness of 4.2 μm) into 20mm × 20mm × 5mm, and adjusting the equilibrium water content of the plywood substrate to 9% at 25 deg.C and 65% relative humidity
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% of gamma-methacryloxypropyltrimethoxysilane, 14 Wt% of deionized water, 55 Wt% of absolute ethyl alcohol and 1 Wt% of glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: the silane coupling agent treatment agent was added at a rate of 0.1 kg/m2Uniformly brushing the mixture on the surface of a plywood base material, heating the mixture at 103 ℃ for 3 hours, and then adjusting the equilibrium water content of the plywood base material to 10% under the conditions that the temperature is 25 ℃ and the relative humidity is 65%.
4. UV digital jet printing: the method comprises the steps of carrying out jet printing on the surface of a plywood substrate subjected to jet printing treatment by using an acrylate-based UV photocuring ink by using a UV jet printing and curing machine, carrying out UV curing at the temperature of 20 ℃, and then placing for 48 hours at room temperature, namely carrying out digital jet printing on a UV composite coating with high adhesive force on the surface of the plywood substrate, wherein the structure of the UV composite coating is plywood wood substrate/silane coupling layer/UV coating. The thickness of the wood substrate is 5mm, the thickness of the silane coupling layer is 20 microns, and the thickness of the UV coating layer is 155 microns.
And (3) performance testing: the plywood substrate test piece with the digital jet printing UV coating is used for measuring the adhesive force of the digital jet printing UV coating on the surface bonding strength. The adhesion of the spray printed UV coating to the surface of the plywood substrate was determined with reference to GB/T5210-2006/ISO 4624:2002 adhesion test by paint and varnish pull-off method. The surface bonding strength of the obtained digital jet printing UV composite coating on the plywood substrate is 3.56 MPa.
Example 4
1. Preparing and humidifying a wood base material: sawing the medium density fiberboard substrate (surface roughness of 3.5 μm) into pieces of 20mm × 20mm × 5mm (chord × longitudinal × diameter), and adjusting the equilibrium water content of the medium density fiberboard substrate to 10% at a temperature of 25 ℃ and a relative humidity of 65%
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% of vinyl triethoxysilane, 14 Wt% of deionized water, 55 Wt% of absolute ethyl alcohol and 1 Wt% of glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: the silane coupling agent treatment agent was added at a rate of 0.1 kg/m2Uniformly brushing the mixture on the surface of a medium density fiberboard substrate, heating the mixture at 103 ℃ for 3 hours, and then adjusting the equilibrium water content of the medium density fiberboard substrate to 10 percent under the conditions that the temperature is 25 ℃ and the relative humidity is 65 percent.
4. UV digital jet printing: and (3) spray-printing acrylate-based UV photocureable ink on the surface of the treated medium density fiberboard substrate by using a UV spray-printing curing machine, and standing for 48 hours at room temperature after UV curing at the temperature of 25 ℃, so that the digital spray-printing UV composite coating with high adhesive force on the surface of the medium density fiberboard substrate is formed by the medium density fiberboard wood substrate/the silane coupling layer/the UV coating. The thickness of the wood substrate is 5mm, the thickness of the silane coupling layer is 19 mu m, and the thickness of the UV coating layer is 157 mu m.
And (3) performance testing: and (3) using the medium density fiberboard substrate test piece attached with the digital jet printing UV coating as the adhesive force for measuring the surface bonding strength of the digital jet printing UV coating. The adhesion of the UV spray-printed coating to the surface of the medium density fiberboard substrate was determined with reference to GB/T5210-2006/ISO 4624:2002 adhesion test by paint and varnish pull-off method. The surface bonding strength of the obtained digital jet printing UV composite coating on the medium density fiberboard substrate is 2.31 MPa.
Example 5
1. Preparing and humidifying a wood base material: sawing a Fraxinus mandshurica substrate (surface roughness of 3.6 μm) into 20mm × 20mm × 10mm (chord × longitudinal × diameter), and adjusting the equilibrium water content of the Fraxinus mandshurica substrate to 9% at 25 deg.C and 65% relative humidity
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% of vinyl trimethoxy silane, 14 Wt% of deionized water, 55 Wt% of absolute ethyl alcohol and 1 Wt% of glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: treating agent of silane coupling agent of northeast china ash at 0.1 kg/m2Uniformly brushing the mixture on the surface of a wood base material, heating the mixture at 103 ℃ for 3 hours, and then adjusting the equilibrium water content of the fraxinus mandshurica base material to 10% under the conditions that the temperature is 25 ℃ and the relative humidity is 65%.
4. UV digital jet printing: and (3) spray-printing acrylate-based UV photocuring ink on the surface of the treated fraxinus mandshurica substrate by using a UV spray-printing curing machine, carrying out UV curing at the temperature of 27 ℃, and then placing for 24 hours at room temperature, namely, the digital spray-printing UV composite coating with high adhesive force on the surface of the fraxinus mandshurica substrate is a fraxinus mandshurica wood substrate/silane coupling layer/UV coating. The thickness of the wood substrate is 10mm, the thickness of the silane coupling layer is 21 mu m, and the thickness of the UV coating layer is 155 mu m.
And (3) performance testing: and (3) using the fraxinus mandshurica base material test piece attached with the digital spray printing UV coating as the adhesive force for measuring the digital spray printing UV coating with the surface bonding strength. The adhesion of the spray-printed UV coating to the surface of the Fraxinus mandshurica substrate is determined by reference to GB/T5210-2006/ISO 4624:2002 adhesion test by paint and varnish pull-off method. The surface bonding strength of the obtained digital jet printing UV composite coating on the fraxinus mandshurica base material is 5.73 MPa.
Example 6
1. Preparing and humidifying a wood base material: sawing poplar base material (surface roughness 4.2 μm) into 20mm × 20mm × 10mm, and regulating balance water content of the poplar base material to 9% at 25 deg.C and 65% relative humidity
2. Preparing a silane coupling agent treating agent: the solution comprises the following components in percentage by mass: 30 Wt% of vinyl triethoxysilane, 14 Wt% of deionized water, 55 Wt% of absolute ethyl alcohol and 1 Wt% of glacial acetic acid. Stirring at the rotating speed of 1000 rpm for 3 hours at the temperature of 25 ℃;
3. treating the surface of the wood substrate by using a silane coupling agent: the silane coupling agent treatment agent was added at a rate of 0.1 kg/m2Uniformly brushing the mixture on the surface of a poplar substrate, heating the poplar substrate for 3 hours at 103 ℃, and then adjusting the equilibrium water content of the poplar substrate to 10% under the conditions of 25 ℃ and 65% of relative humidity.
4. UV digital jet printing: and (3) spray-printing acrylate-based UV photocuring ink on the surface of the treated poplar substrate by using a UV spray-printing curing machine, carrying out UV curing at 17 ℃, and then placing for 24 hours at room temperature, so that the digital spray-printing UV composite coating with high adhesive force on the surface of the poplar substrate is formed by the poplar wood substrate/the silane coupling layer/the UV coating. The thickness of the wood substrate is 10mm, the thickness of the silane coupling layer is 18 μm, and the thickness of the UV coating layer is 154 μm.
And (3) performance testing: and (3) using the poplar substrate test piece attached with the digital jet printing UV coating as the adhesive force for measuring the digital jet printing UV coating with the surface bonding strength. The adhesion of the spray-printed UV coating to the surface of the poplar substrate was determined with reference to GB/T5210-2006/ISO 4624:2002 adhesion test by paint and varnish pull-off method. The surface bonding strength of the obtained digital jet printing UV composite coating on the poplar substrate is 5.36 MPa.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (4)
1. A wood-based panel, comprising a wood-based substrate, a silane coupling layer and a UV coating layer, wherein the silane coupling layer is between the wood-based substrate and the UV coating layer.
2. The wood-based panel according to claim 1, wherein the wood-based material has a thickness of 5 to 100mm, the silane coupling layer has a thickness of 17 to 23 μm, and the UV coating layer has a thickness of 150 to 160 μm.
3. A wood-based board according to claim 1, wherein the wood-based material is birch, masson pine, plywood, fiberboard, ash or poplar.
4. Wooden panel according to claim 1, characterized in that the UV coating is an acrylate based layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185663.6U CN212574521U (en) | 2019-12-09 | 2019-12-09 | Wooden board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922185663.6U CN212574521U (en) | 2019-12-09 | 2019-12-09 | Wooden board |
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| CN212574521U true CN212574521U (en) | 2021-02-23 |
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| CN201922185663.6U Active CN212574521U (en) | 2019-12-09 | 2019-12-09 | Wooden board |
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