CN116945702A

CN116945702A - Composite board, furniture and door plate

Info

Publication number: CN116945702A
Application number: CN202310721258.XA
Authority: CN
Inventors: 董丹鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2023-10-27
Also published as: CN113752643B; CN116749609A; CN113752643A

Abstract

The invention provides a composite board, furniture and a door plate. The composite board comprises a base material and a ceramic substrate. The substrate has a first surface and a second surface. The ceramic rock plate is attached to the first surface of the substrate. The ratio of the water absorption thickness expansion rate of the substrate to the water absorption thickness expansion rate of the ceramic rock plate is in the range of 0.05 to 20. The ceramic rock plate is attached to the surface of the base material. The ceramic rock plate can prevent the surface of the composite plate from being scratched or broken. In addition, since the ratio of the water absorption thickness expansion rate of the base material to the water absorption thickness expansion rate of the ceramic rock plate is in the range of 0.05 to 20, that is, the ratio of the water absorption dimensional change of the base material to the ceramic rock plate is small, the phenomenon that the composite plate is damaged due to the delamination of the composite plate caused by cooling water in the cutting process can be avoided.

Description

Composite board, furniture and door plate

Technical Field

The invention belongs to the technical field of plates, and particularly relates to a composite board, furniture and a door plate.

Background

Along with the improvement of living standard, the requirements of people on living quality are also higher and higher. For furniture, people not only require furniture boards to be attractive, but also require furniture boards to be good in quality. In order to meet customer needs, furniture manufacturers have developed various types of composite boards to meet both aesthetic and quality requirements. One type of composite board commonly used is a wood board and a ceramic composite board, i.e. a ceramic panel is covered on the surface of the wood substrate, so as to meet the requirements of both aesthetic degree and quality. However, in wood and ceramic composite panels, ceramic panels are unsuitable for machining to cut various shapes to accommodate the requirements of furniture due to their brittle texture. Even if the ceramic panel is cut by a cutting tool, since water is generally required as a coolant in the ceramic cutting process, the difference of expansion coefficients of the wood substrate and the ceramic panel after water absorption is large, so that the wood substrate and the ceramic panel are easily delaminated in the cutting process to damage the composite panel.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a composite board, which solves the problems that the processing performance of the wood board and the ceramic composite board in the prior art is poor, and the wood board and the ceramic panel are easy to delaminate due to the fact that the wood board is easy to absorb water in the water-cooling cutting process of the composite board.

One embodiment of the present invention provides a composite panel comprising: a substrate having a first surface and a second surface; and a ceramic rock plate attached to the first surface of the substrate; wherein the ratio of the water absorption thickness expansion rate of the base material to the water absorption thickness expansion rate of the ceramic rock plate is in the range of 0.05 to 20.

In one embodiment, the composite panel further comprises: and the first adhesive layer is arranged between the base material and the ceramic rock plate.

In one embodiment, the composite panel further comprises: and the lining plate is attached to the second surface of the base material.

In one embodiment, the composite panel further comprises: and the second adhesive layer is arranged between the base material and the lining plate.

In one embodiment, the first adhesive layer and/or the second adhesive layer are made of a reactive polyurethane hot melt adhesive material.

In one embodiment, the substrate has a thickness in the range of 9 to 40 mm; and/or the ceramic rock plate has a thickness in the range of 1 to 6 mm.

In one embodiment, the thickness ratio of the ceramic rock plate to the lining plate is n:1, wherein the value of n is in the range of 2 to 10.

In one embodiment, the first surface of the substrate is provided with a glue spreading groove, and the first glue layer is partially accommodated in the glue spreading groove.

In one embodiment, the glue spreading groove is of a wavy structure, the wave height value of the glue spreading groove is in the range of 0.8-1.2 mm, and the wavelength value of the glue spreading groove is in the range of 1.2-1.8 mm.

In one embodiment, the glue spreading groove comprises a plurality of linear groove bodies, and the plurality of linear groove bodies are arranged in parallel;

and/or the glue spreading groove comprises a plurality of annular groove bodies, and the sizes of the annular groove bodies are gradually increased from inside to outside; and/or, the glue spreading groove comprises a plurality of groove points, and the first glue layer is partially accommodated in the groove points.

In one embodiment, the substrate is a straw board.

In one embodiment, the straw board has a water absorption thickness expansion of less than or equal to 0.6%; and/or, the water absorption thickness expansion rate of the composite board is less than or equal to 0.1%; and/or the change rate of the water absorption length or the change rate of the water absorption width of the straw board is less than or equal to 0.4%.

In one embodiment, the ratio of the water absorption of the straw board to the water absorption of the ceramic rock board is in the range of 0.05 to 20.

In one embodiment, the water absorption of the straw board is less than or equal to 0.5%; and/or the water absorption of the ceramic rock plate is less than or equal to 0.05%; and/or, the water absorption of the composite board is less than or equal to 0.1%.

In one embodiment, the plate surface nail holding force of the composite plate is more than or equal to 12N/mm ² The method comprises the steps of carrying out a first treatment on the surface of the And/or the plate edge nail holding force of the composite plate is greater than or equal to 8N/mm ² 。

In one embodiment, the fire protection performance of the composite panel comprises: the combustion growth rate of the composite board is less than or equal to 250W/s;

and/or the side flame spread range of the composite panel is less than or equal to the edge of the composite panel; and/or the total amount of heat release of the composite panel, when exposed to a burner flame, for the first 600 seconds is less than or equal to 15MJ.

In one embodiment, the formaldehyde emission of the composite board is less than or equal to 0.06mg/m ³ 。

In one embodiment, the density of the straw board is 0.4 to 0.8g/cm ³ Within a range of (2).

In one embodiment, the substrate is a foam aluminum plate.

In one embodiment, the foamed aluminum sheet is a closed cell structure; and/or the porosity of the foamed aluminum plate is in the range of 80% to 90%; and/or the pore diameter of the foamed aluminum plate is in the range of 0.4 to 5 mm.

In one embodiment, the ratio of the coefficient of thermal expansion of the foamed aluminum sheet to the coefficient of thermal expansion of the first ceramic rock plate is in the range of 0.2 to 5.

In one embodiment, the foamed aluminum sheet has a thickness in the range of 12 to 40 mm; and/or the thickness of the first ceramic rock plate is in the range of 3 to 6 mm.

In one embodiment, the plate surface nail holding force of the composite plate is greater than or equal to 10N/mm ² 。

In one embodiment, the liner plate comprises a second ceramic rock plate; and/or the thickness of the lining plate is smaller than or equal to the thickness of the first ceramic rock plate.

In one embodiment, the first surface of the foamed aluminum plate has a porous structure, and the first adhesive layer is partially disposed in the porous structure.

In one embodiment, the foamed aluminum sheet has a density of 0.2 to 0.4g/cm ³ Within a range of (2).

Another embodiment of the present invention also provides a piece of furniture, including a composite panel. The composite board is the composite board according to any one of the above embodiments.

Still another embodiment of the present invention provides a door panel comprising a composite panel. The composite board is the composite board according to any one of the above embodiments.

In one embodiment, the door panel further comprises: and the edge banding strips are attached to the periphery of the door plate.

In one embodiment, the edge strip comprises an outer surface layer, wherein the outer surface layer is an aluminum sheet, an aluminum alloy sheet or an ABS plastic sheet.

In one embodiment, the edge sealing strip further comprises a PVC adhesive layer, and the PVC adhesive layer is arranged on one side, attached to the periphery of the door plate, of the outer surface layer.

The composite board, furniture or door panel provided by the embodiment of the invention has the following beneficial effects:

1. because the ceramic rock plate is attached to the surface of the base material, the ceramic rock plate can improve the attractiveness and strength of the surface of the plate, so that the surface style of the plate is more diversified, the appearance requirements of different people on the plate are met, and the luxury and high-grade degree of furniture are further highlighted. On the other hand, the ceramic rock plate has higher hardness and better wear resistance, and can effectively prevent the surface of the plate from being scratched or broken, so that the prepared composite plate has better stability.

2. Because the ratio of the water absorption thickness expansion rate of the base material to the water absorption thickness expansion rate of the ceramic rock plate is in the range of 0.05 to 20, the mechanical property difference between the base material and the ceramic rock plate is small, so that the phenomenon that the composite plate is damaged due to delamination of the base material and the ceramic rock plate in the long-time use process of the composite plate is avoided. In particular, in the process of cutting the composite board, even if the ceramic rock board needs water spraying for cooling or dedusting in the cutting process, the composite board is not easy to be broken due to the fact that the expansion rate of the thickness of the base material is low due to water absorption, and the composite board is not easy to be layered between the base material and the ceramic rock board in the cutting process.

3. Because the lining board is attached to the other surface of the base material, the lining board can effectively protect the base material and avoid the lining board from being corroded. In particular, as one surface of the base material is covered by the ceramic rock plate and the other surface is covered by the lining plate, the arrangement mode can further improve the waterproof performance of the composite board, thereby further avoiding the damage of the manufactured composite board due to delamination of the composite board caused by the difference of water absorption expansion rates of the base material and the ceramic rock plate in the using or cutting process.

4. The substrate is bonded to the ceramic rock plate and the lining plate respectively through a first adhesive layer and a second adhesive layer, and the first adhesive layer or the second adhesive layer can be made of PUR hot melt adhesive materials. Since the PUR hot melt adhesive material does not contain an organic solvent, the colloid coating can be performed at a lower temperature. And cooling and solidifying after the colloid coating to finish the primary bonding. In the subsequent process, the PUR hot melt adhesive material is cured by moisture in the air, and has excellent bonding strength and impact resistance after complete curing. Therefore, the substrate, the ceramic rock plate and the lining plate are bonded together through the PUR hot melt adhesive material, and the formed composite plate has higher bonding strength.

5. In one embodiment, the substrate is made of straw board. The straw board can effectively improve the nail holding force of the composite board, so that the mechanical processing performance of the manufactured composite board is better. In addition, the density of the straw board is set at 0.4 to 0.8g/cm ³ Within the range, the whole weight of the manufactured composite board can be ensured while the composite board has higher nail holding powerAnd will not be too large. In one embodiment, straw boards are used as base materials, and after being compounded with ceramic rock boards, the board surface nail holding force of the composite board is more than or equal to 12N/mm ² The nail holding force of the plate edge of the composite plate is more than or equal to 8N/mm ² The method comprises the steps of carrying out a first treatment on the surface of the And the composite board has better fireproof performance and less formaldehyde release. At this time, the composite board made of straw boards and ceramic rock boards is particularly suitable for manufacturing furniture.

6. In one embodiment, the substrate is made of foamed aluminum sheet. Because the foamed aluminum plate has stable property, the dimensional change rate of the foamed aluminum plate after water absorption is small, and the mechanical processing performance of the manufactured composite plate is good after the foamed aluminum plate is compounded with the ceramic rock plate. In the process of cutting the composite board, even if the ceramic rock board needs water spraying for cooling or dedusting and the like in the cutting process, the composite board is not easy to be damaged due to the fact that the size of the foamed aluminum board basically changes little after water is absorbed, and the phenomenon that the foamed aluminum board and the ceramic rock board are layered in the cutting process.

7. The foamed aluminum plate is used as the base material of the composite board, so that the nail holding force of the manufactured composite board can be improved. Because inside the foamed aluminum plate has many unequal and irregular pore structures of size, when the screw goes deep into inside the foamed aluminum plate, the inner wall of unequal and irregular pore structure of size can hold the screw to effectively improve foamed aluminum plate's nail-holding power.

8. The foamed aluminum plate is used as the base material of the composite board, and the weight of the composite board can be effectively reduced due to the fact that the density of the foamed aluminum plate is smaller and the weight of the foamed aluminum plate is lighter. In one embodiment, the density of the foamed aluminum plate is set at 0.2 to 0.4g/cm ³ Within the range. The density of the foamed aluminum plate is set to 0.2 to 0.4g/cm ³ In the range, the weight of the composite board can be ensured not to be excessive while the composite board has higher nail holding force. At this time, the composite board made of foamed aluminum plate and ceramic rock plate is especially suitable for preparing door plate.

9. The foamed aluminum plate has a closed cell structure. By arranging the foamed aluminum plate in a closed cell structure, the nail holding force of the foamed aluminum plate can be further improved, and the machinability of the foamed aluminum plate can be enhanced. In addition, a foamed aluminum plate having a pore diameter in the range of 0.4 to 5mm is selected, which can also improve the nail holding force of the foamed aluminum plate due to the smaller pore diameter of the pores therein.

10. When the foamed aluminum plate is adopted to bond the foamed aluminum plate and the ceramic rock plate, the contact area between the first adhesive layer and the foamed aluminum plate can be increased by the pore structure on the surface of the foamed aluminum plate, so that the bonding performance of the foamed aluminum plate and the ceramic rock plate is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a composite board according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a straw board according to another embodiment of the present invention;

FIG. 3 is a schematic top view of the straw board of FIG. 2;

fig. 4 is a schematic structural view of the straw board in fig. 2 after attaching a ceramic rock board and a lining board;

fig. 5 is a schematic structural view of a straw board according to another embodiment of the present invention;

fig. 6 is a schematic structural view of a straw board according to another embodiment of the present invention;

fig. 7 is a schematic structural view of a composite board according to another embodiment of the present invention;

FIG. 8 is a schematic view of the porous structure of the surface of the foamed aluminum sheet of FIG. 7;

FIG. 9 is a schematic view of a porous structure of the foamed aluminum plate in FIG. 7 when a glue spreading groove is formed on the surface of the foamed aluminum plate;

FIG. 10 is a schematic view of a door panel according to another embodiment of the present invention;

fig. 11 is an enlarged schematic view of area a of the door panel of fig. 10.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if a directional indication (such as up, down, left, right, front, and rear … …) is involved in the embodiment of the present invention, the directional indication is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional indication is correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if "and/or" and/or "are used throughout, the meaning includes three parallel schemes, for example," a and/or B "including a scheme, or B scheme, or a scheme where a and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1, one embodiment of the present invention provides a composite panel 100 comprising a substrate 110 and a ceramic rock plate 120.

The substrate 110 has a first surface 111 and a second surface 112.

The ceramic rock plate 120 is attached to the first surface 111 of the substrate 110.

Wherein a ratio of the water absorption thickness expansion rate of the base material 110 to the water absorption thickness expansion rate of the ceramic rock plate 120 is in a range of 0.05 to 20.

In the composite board 100 provided in this embodiment, since the ceramic rock plate 120 is attached to the surface of the base material 110, the ceramic rock plate 120 can improve the aesthetic degree and strength of the surface of the board, so that the surface style of the board is more diversified, thereby meeting the appearance demands of different people on the board, and further highlighting the luxury and high-grade degree of furniture. On the other hand, the ceramic rock plate 120 has high hardness and good wear resistance, and can effectively prevent the surface of the plate from being scratched or broken, so that the manufactured composite plate has good stability.

In addition, since the ratio of the water absorption thickness expansion rate of the base material 110 to the water absorption thickness expansion rate of the ceramic rock plate 120 is in the range of 0.05 to 20, the difference in mechanical properties between the base material 110 and the ceramic rock plate 120 is small, so that the phenomenon that the base material 110 and the ceramic rock plate 120 are layered during the long-term use of the composite board 100 to cause the damage of the composite board 100 is avoided. In particular, in the process of cutting the composite board 100, even if the ceramic rock board 120 needs to be sprayed with water for cooling or dust removal in the cutting process, the composite board 100 is not easy to be broken due to the delamination phenomenon of the base material 110 and the ceramic rock board 120 in the cutting process due to the low water absorption thickness expansion rate of the base material 110.

In this embodiment, the substrate 110 is a straw board. The straw board is an artificial composite board with excellent performance, which is prepared from agricultural production residues such as wheat straw, corn straw, sorghum straw, rice straw, sugarcane residues and the like. The board is environment-friendly, waterproof, fireproof and belongs to renewable resources. Meanwhile, the price of the straw board is relatively low, and the production cost of the composite board can be reduced. In the actual manufacturing process of the straw board, the wheat straw raw material can be subjected to mechanical crushing, screening, drying, stirring, paving, rolling, trimming, inspection and other processes after impurities such as soil and the like are removed, and finally the finished board is obtained. In this embodiment, the straw board 110 is made of Gu Mu biomass material, which is made of approximately 60% of straw raw material, more than 30% of common salt and mineral oil composition, and is processed by high temperature, high pressure and mechanical extrusion technology.

The ceramic rock plate 120 is attached to the first surface of the straw board 110. The ceramic rock plate (Porcelain Slab) is a new plate-shaped inorganic material which uses clay and other inorganic nonmetallic materials as main raw materials, and is manufactured by the manufacturing technologies of molding, drying, high-temperature sintering and the like, and the produced blank has the same surface color and can be processed in the modes of cutting, drilling, polishing and the like according to the design requirements. The common ceramic plate or ceramic sheet has the disadvantages of brittle texture, low strength and difficulty in implementing mechanical processing processes such as cutting, drilling and the like so as to meet the requirements of various furniture. The ceramic rock plate has high hardness, good shock resistance and wear resistance, and can be subjected to cutting, drilling and other processes according to design requirements. Therefore, the composite board manufactured by the straw board 110 and the ceramic rock board 120 can also be cut, drilled, polished and the like according to requirements, so that the composite board is suitable for different types of furniture.

In the composite board 100 provided in this embodiment, since the straw board 110 is used as the base material in the composite board 100, the grip of the composite board 100 can be effectively improved by the straw board 110, so that the prepared composite board 100 is easy to splice and assemble by using screws.

The water absorption thickness expansion rate refers to the ratio of the thickness difference before and after water absorption to the thickness before water absorption of the measured sample after a certain amount of sample is cut out and immersed in water for a certain period of time according to a specified method. Since the humidity in the air often changes and the furniture board is likely to be in contact with water, the water absorption thickness expansion rate is an important assessment factor of the furniture board. In general, the ceramic material has stable mechanical property and small water absorption thickness expansion rate. However, the conventional wood board has a large expansion ratio due to the thickness of the board which absorbs water and expands easily after absorbing water. Typical wood-based boards may have a water absorption thickness expansion of more than 10%, whereas ceramic materials typically have a water absorption thickness expansion of less than 0.1%. The ratio of the water absorption thickness expansion rate of the two is larger. Therefore, with respect to the composite board made of the conventional wood base plate and ceramic material, since the ratio of the water absorption thickness expansion rates of the two is large, delamination of the wood base plate and ceramic material is easily generated after a long period of use, resulting in damage of the composite board. In the present embodiment, the ratio of the expansion ratio of the water absorption thickness of the straw board 110 to the expansion ratio of the water absorption thickness of the ceramic rock board 120 are within the range of 0.05 to 20, so that the phenomenon that the composite board 100 is damaged due to delamination of the straw board 110 and the ceramic rock board 120 during long-term use of the composite board 100 can be avoided.

In one embodiment, the density of the straw board 110 is set at 0.4 to 0.8g/cm ³ Within the range. The density of the straw board 110 is set to 0.4 to 0.8g/cm ³ Within this range, it is ensured that the overall weight of the composite plate 100 is not excessive while having a high grip. For example, when the density of the straw board 110 is set to 0.4g/cm ³ When the composite panel 100 is in use, the overall mass is relatively light, and the composite panel is suitable for side panels and door panels of furniture. At this time, the composite plate 100 is lighter in use while securing the nail holding force. When the density of the straw board 110 is 0.8g/cm ³ In this case, the overall quality of the composite panel 100 is improved, and the composite panel is suitable for a countertop of furniture. At this time, the whole composite board 100 is thick and safe, and the bearing capacity is also improved.

In one embodiment, the composite panel 100 further includes a backing plate 130. The liner 130 is attached to a second surface 112 of the straw board 110 opposite the first surface 111. Specifically, the thickness ratio of the ceramic rock plate 120 to the lining plate 130 is n:1, wherein the value range of n is in the range of 2 to 10. By attaching the lining board 130 to the second surface 112 of the straw board 110 opposite to the first surface 111, on one hand, the lining board 130 can effectively protect the straw board 110 from corrosion; on the other hand, since both surfaces of the straw board 110 are covered with the ceramic rock board 120 and the liner board 130, respectively, the waterproof performance of the composite board 100 can be further improved. At this time, the composite board 100 is not easily broken due to delamination of the composite board 100 due to the difference in water expansion rates of the ceramic rock board 120 and the straw board 110 during use.

In this embodiment, the water absorption thickness expansion rate of the straw board 110 is less than or equal to 0.6%. Since the water absorption thickness expansion rate of the straw board 110 is less than or equal to 0.6%, it can be sufficiently adapted to the water absorption thickness expansion rate of the ceramic rock board 120. The water absorption thickness expansion ratio of the composite sheet 100 is less than or equal to 0.1% as required. In one embodiment, the water absorption thickness expansion ratio of the composite board 100 is 0.07%. In addition to the water absorption thickness expansion rate, the water absorption dimensional change rate in the length direction or the width direction is also an important consideration for the furniture plate. The change rate of the water absorption length or the change rate of the water absorption width of the straw board 110 is less than or equal to 0.4% according to the requirement, thereby realizing the adaptation with the ceramic rock board 120. In the present embodiment, the water absorption width change rate of the straw board 110 in the lateral direction is 0.37%; the change rate of the water absorption length of the straw board 110 in the longitudinal direction is 0.33%.

It will be appreciated that the water absorption of the straw board 110 and the ceramic rock board 120 also affects the water resistance of the resulting composite board 100. In one embodiment, the ratio of the water absorption of the straw board 110 to the water absorption of the ceramic rock board 120 is in the range of 0.05 to 20. The ratio of the water absorption rates of the straw board 110 and the ceramic rock board 120 is set to be within the range of 0.05 to 20, and delamination phenomenon of the straw board 110 and the ceramic rock board 120 due to the difference of dimensional changes after water absorption can be avoided. In this embodiment, the water absorption of the straw board 110 is less than or equal to 0.5%; the water absorption of the ceramic rock plate 120 is less than or equal to 0.05%. The water absorption of the composite plate 100 is less than or equal to 0.1%.

In one embodiment, the thickness of the straw board 110 is in the range of 9 to 40 mm. The thickness of the ceramic rock plate 120 is as followsIn the range of 1 to 6 mm. The purpose of setting the thickness of the straw board 110 in the range of 9 to 40mm is to: since the density of the straw board 110 is significantly less than that of the ceramic rock board 120, the straw board 110 of about 9 to 40mm can significantly reduce the overall weight of the composite board 100; meanwhile, the thickness of the straw board 110 is set to 9 to 40mm, so that the manufactured composite board 100 can have high nail holding force. That is, when the thickness of the straw board 110 is in the range of 9 to 40mm, the composite board 100 has a high nail holding force, and at the same time, the weight of the board is not excessive, the installation and transportation are convenient, and the use is more comfortable. In general, the nail-holding force refers to: the performance of the wood-anchored metal links (round nails, wood screws, etc.) is calculated by the force required to extract a screw of a certain size. The plate surface nail holding force of the composite plate 100 is greater than or equal to 12N/mm according to the requirement ² . The plate edge nail holding force of the composite plate 100 is greater than or equal to 8N/mm ² . In one embodiment, the plate surface nail-holding force of the composite plate 100 is 12.7N/mm ² . The plate edge nail holding force of the composite plate 100 is greater than or equal to 8.9N/mm ² . Wherein, the test method is formulated according to EN 13446 to 2002, and the test conditions are set as follows:

screw size: ST4.2×38;

nail pulling speed: 5mm/min;

sample size: 50mm by 50mm;

test environment: 21.6 ℃,64% rh.

It can be seen that the composite board 100 according to the embodiment of the present invention has a higher value of the nail holding force, and meets the requirements of the furniture industry.

The thickness of the ceramic rock plate 120 is set in the range of 1 to 6mm, so that the ceramic rock plate 120 can adapt to the requirements of different use scenes. When the composite board 100 is used on some non-high bearing capacity boards such as side panels or door panels of furniture, a thinner ceramic rock board 120 is selected. And when the composite panel 100 is used on some high bearing capacity deck surfaces such as countertops, cabinet panels, etc., a thicker ceramic rock plate 120 is selected. In this embodiment, the thickness of the ceramic rock plate 120 is preferably 3mm. At this time, the ceramic rock plate 120 has moderate weight, wear resistance, bearing capacity and other properties, and meets the requirements of most users. And the production cost of the corresponding ceramic rock plate 02 is relatively low, and the comprehensive performance is high.

In addition, applicant also conducted fire performance tests on the resulting composite panel 100. In one embodiment, the fire protection properties of the composite panel 100 include:

The composite panel 100 has a burn growth rate of less than or equal to 250W/s;

and/or the side flame spread range of the composite panel 100 is less than or equal to the edge of the composite panel 100;

and/or, the total amount of heat release of the composite panel 100, when exposed to a burner flame, for the first 600 seconds is less than or equal to 15MJ.

Specifically, in the fireproof performance test process, the standard documents according to the method are: EN 13501 to 1:2018 building materials and products combustion performance grading. The specific test method is as follows:

en 13823:2020 building product burn test to monomer burn test of building materials (except floor materials);

en ISO11925 to 2:2020 burn test to ignite building products with a specified flame.

During the testing of the composite board 100, the mounting and fixing modes of the composite board 100 are as follows: EN 13823:2020. Wherein, there is no ventilation gap after the composite board sample to be tested, the composite board sample is free standing, and the upper and lower ends of the composite board 100 are fixed.

The test results obtained are shown in the following table:

wherein:

FIGRA to combustion growth rate index for staging [ W/s ];

for class A2 and class B, figra=figra _0.2MJ ；

For class C and class D, figra=figra _0.4MJ ；

LFS to flame transverse propagation length [ m ];

THR _600s total heat release up to 600 seconds [ MJ ]]；

SMOGRA to fume formation Rate [ m ² /s ² ]；

TSP _600s Total smoke generation [ m ] up to 600 seconds ² ]。

The applicant also performed RoHS directive project testing on the finished composite board 100, as required. In the RoHS instruction project test process, pb/Cd/Hg/Cr6+/PBBs/PBDEs test and Phthates test are performed respectively. Test methods were analyzed with ICP to OES, UV to Vis, and GC to MS with reference to IEC62321 to 4:2013+A1:2017, IEC62321 to 5:2013, IEC62321 to 7 to 2:2017, IEC62321 to 6:2015, and IEC62321 to 8:2017.

The obtained detection results are shown in the following table:

wherein:

(1)1mg/kg＝0.0001％；

(2) MDL = method limit of detection;

(3) ND = undetected (< MDL);

(4) "to" =not specified.

It can be seen that the composite panel 100 produced clearly meets the requirements of RoHS directive project testing.

In one embodiment, in order for composite board 100 to meet environmental requirements, the formaldehyde emission of the composite board is less than or equal to 0.06mg/m ³ To avoid damage to the physical health of the person. Accordingly, the applicant tested the formaldehyde emission of the composite panels produced, test methods referenced EN 717 to 1:2004, analyzed with UV to Vis. Test results show that the formaldehyde of the composite board 100 provided by the embodiment of the invention The release amount is 0.050mg/m ³ . In the BS EN 13986:2004+A1:2015 standard, when the formaldehyde emission is less than or equal to 0.124mg/m ³ The sample reached E1 grade. It can be seen that the formaldehyde release amount of the composite board provided by the embodiment of the invention is 0.050mg/m ³ It is significantly less than 0.124mg/m ³ . Thus, the composite panels produced reached the E1 grade in the BS EN 13986:2004+A1:2015 standard.

In one embodiment, the composite panel 100 further includes a first glue layer 140 and a second glue layer 150.

The first glue layer 140 is disposed between the straw board 110 and the ceramic rock board 120, and is used for attaching the ceramic rock board 120 to the straw board 110. The second glue layer 150 is disposed between the straw board 110 and the liner board 130, and is used for attaching the liner board 130 to the straw board 110. Specifically, the lining plate 130 may be made of a metal plate or a ceramic rock plate. When the lining plate 130 is made of a ceramic rock plate, the material of the lining plate 130 may be the same as the material of the ceramic rock plate 120 or may be different from the material of the ceramic rock plate 120. In addition, when the lining plate 130 is made of a ceramic rock plate, the thickness of the lining plate 130 is smaller than that of the ceramic rock plate 120. In this embodiment, the liner 130 is made of a metal plate. The straw board 110 is a solid structure. The ceramic rock plate 120 is attached to the first surface 111 of the straw plate 110 by a first glue layer 140; the liner 130 is attached to the second surface 112 of the straw board 110 by a second glue layer 150. The first adhesive layer 140 and the second adhesive layer 150 are both reactive hot melt adhesive materials. It will be appreciated that one of the first and second adhesive layers 140, 150 may also be provided as a reactive hot melt adhesive material. In one embodiment, the reactive hot melt adhesive material is a reactive polyurethane (PUR, polyurethane Reactive) hot melt adhesive material. Since the PUR hot melt adhesive material does not contain an organic solvent, the colloid coating can be performed at a lower temperature. And cooling and solidifying after the colloid coating to finish the primary bonding. In the subsequent process, the PUR hot melt adhesive material is cured by moisture in the air, and has excellent bonding strength and impact resistance after complete curing. Therefore, the straw board 110, the ceramic rock board 120 and the lining board 130 are bonded together by the reactive hot melt adhesive material, and the formed composite board 100 has high bonding strength.

In a specific bonding process, the curing process of the PUR hot melt adhesive is divided into two stages, namely cooling condensation and moisture curing:

in the cooling and condensing stage, heating the PUR hot melt adhesive and coating the PUR hot melt adhesive on a straw board, and generating preliminary bonding strength after the PUR hot melt adhesive is cooled and condensed;

in the moisture curing stage, the PUR hot melt adhesive and moisture in the air undergo a chain extension reaction to form a polyurethane molecular chain rigid structure, so that the polyurethane molecular chain rigid structure has high bonding strength and good chemical resistance, heat resistance and hydrolysis resistance.

Thus, in the present embodiment, the ceramic rock plate 120 and the lining plate 130 are respectively attached to the first surface 111 and the second surface 112 of the straw plate 110 by reactive hot melt adhesive. The straw board 110, the ceramic rock board 120, the lining board 130, the first glue layer 140 and the second glue layer 150 are formed into an integrated composite board structure after being cured by heating, pressurizing and solidifying.

In this embodiment, the lining plate 130 is made of an aluminum alloy plate. At this time, the thickness of the backing plate 130 is in the range of 0.2 to 0.8 mm. When the composite board is installed in a large volume and a large installation bearing force is needed, the thickness of the lining board 130 is selected to be a large value of 0.8mm, so that the large installation bearing force can be provided for the board, and the board is installed more firmly. Correspondingly, when the size of the composite board is smaller, the thickness of the lining board 130 is smaller by 0.2 mm.

In one embodiment, the reactive hot melt adhesive is a PUR reactive hot melt adhesive. When the ceramic rock plate 120 and the lining plate 130 are attached to the straw plate 110, the PUR reaction type hot melt adhesive is firstly put into a hot melt machine, and after preheating, heating and dispensing, the PUR reaction type hot melt adhesive is coated on the surface of the lining plate 130, so that a second adhesive layer 150 with the thickness of 0.1-0.2 mm is formed. Then, the straw board 110 is directly covered on the second adhesive layer 150, and a first adhesive layer 140 with a thickness of 0.1 to 0.2mm is coated on the upper surface (the first surface 11) of the straw board 110. And then the ceramic rock plate 120 is directly covered on the second adhesive layer 150 to form a composite board preform, and the composite board preform is placed into hot pressing equipment to be heated, pressurized and solidified to form a composite board finished product. During the manufacturing process, the temperature of the PUR reaction type hot melt adhesive is kept in the range of 80 to 110 ℃ when the PUR reaction type hot melt adhesive is preheated; the PUR reactive hot melt adhesive is heated to a temperature in the range of 120 to 130 ℃. If the heating temperature is too high, the PUR reactive hot melt adhesive is liable to burst and carbonize, thereby affecting the adhesive property. In the application process of the manufactured composite board, board cutting and material cutting are carried out according to the size of the board required by furniture processing, and then the outer periphery of the furniture board is subjected to edge sealing treatment, so that the furniture board is comprehensively protected. Therefore, the composite board provided by the embodiment of the invention has the characteristics of fire resistance, water resistance, worm damage resistance and the like. In addition, in order to improve the adhesion between the straw board 110 and the ceramic rock board 120, a wave-shaped glue spreading groove may be formed on the first surface of the straw board 110. Meanwhile, in order to save the consumption of the PUR reaction type hot melt adhesive, the wave height of the adhesive spreading groove is controlled to be in the range of 0.8-1.2 mm, and the wavelength is controlled to be in the range of 1.2-1.8 mm. The glue spreading groove is integrally formed with the straw board 110 when the straw board 110 is manufactured and formed. When the PUR reaction type hot melt adhesive is paved on the straw board 110 with the structure, the PUR reaction type hot melt adhesive is partially sunk into the adhesive paving groove, and the fusion property with the PUR reaction type hot melt adhesive is better, so that the adhesion between the straw board 110 and the ceramic rock board 120 is firmer. Moreover, the wave height and the wave length of the glue spreading groove are strictly controlled, so that the waste of the PUR reaction type hot melt adhesive can be effectively avoided, and the production cost of the composite board provided by the embodiment of the invention is controlled. Meanwhile, the formaldehyde content of the composite board is detected, formaldehyde is not detected, and the composite board belongs to an environment-friendly board product with zero formaldehyde.

In fact, in the process of manufacturing the composite board 100, the applicant tried to manufacture a composite board from wood boards, PVC (Polyvinyl chloride ) boards, bamboo carbon fiber boards, honeycomb aluminum boards, etc. together with ceramic rock boards, and the combination properties thereof were not satisfactory.

For the composite board made of the wood board and the ceramic rock board, on one hand, the difference of the water absorption expansion coefficients of the wood board and the ceramic rock board is large, and the wood board and the ceramic rock board are easy to delaminate after long-time use, so that the composite board is damaged; on the other hand, the fire resistance of the wood board is also poor.

For the composite board made of the PVC board and the ceramic rock board, the PVC board and the ceramic rock board are easy to delaminate after long-time use because the difference of the water absorption expansion coefficients of the PVC board and the ceramic rock board is large, so that the composite board is damaged. In addition, PVC sheets may undergo chemical reactions inside under sunlight irradiation, resulting in deterioration of material properties.

For the composite board made of the bamboo charcoal fiber board and the ceramic rock board, the same is true because the difference of the water absorption expansion coefficients of the bamboo charcoal fiber board and the ceramic rock board is large, and the bamboo charcoal fiber board and the ceramic rock board are easy to be layered after long-time use, so that the composite board is damaged. On the other hand, the bamboo charcoal fiber board is also poor in fireproof performance. And the bamboo charcoal fiber board contains lead element, which is easy to damage the health of people.

For the composite board made of the honeycomb aluminum plate and the ceramic rock plate, on one hand, the holding force of the honeycomb aluminum plate is small, and when the screw is arranged on the composite board made of the honeycomb aluminum plate and the ceramic rock plate, the screw is easy to fall off from the composite board. In addition, the manufacturing process of the honeycomb aluminum plate is complex, and the overall cost is high.

Therefore, the composite board made of the straw board and the ceramic rock board has better overall mechanical property, waterproof property, fireproof property and environmental protection property than the composite board made of the wood board, the PVC board, the bamboo carbon fiber board or the honeycomb aluminum board and the ceramic rock board.

Embodiment two:

referring to fig. 2 and 3, in one embodiment, the glue spreading groove includes a plurality of linear grooves 113. The plurality of linear grooves 113 are arranged in parallel. The plurality of linear grooves 113 may reduce a relative displacement between the ceramic rock plate 120 and the straw plate 110 during the attaching of the ceramic rock plate 120 to the straw plate 110. If necessary, the surface of the ceramic rock plate 120 that is attached to the straw plate 110 may be provided with linear protrusions 210 corresponding to the linear grooves 113 of the straw plate 110. In the bonding process, the linear protruding strips 210 of the ceramic rock plate 120 may be correspondingly accommodated in the linear grooves 113 of the straw plate 110, so as to further reduce the relative displacement between the ceramic rock plate 120 and the straw plate 110 in the bonding process. At this time, the composite plate is produced as shown in fig. 4.

Embodiment III:

referring to fig. 5, in one embodiment, the glue spreading groove includes a plurality of annular grooves 121. The plurality of annular groove bodies 121 gradually increases in size from inside to outside. Likewise, the glue spreading groove is provided to include a plurality of annular grooves 121 in order to reduce the relative displacement of the ceramic rock plate 120 with respect to the straw plate 110 in all directions during the fitting process. The surface of the ceramic rock plate 120, which is attached to the straw plate 110, may also be provided with an annular protruding strip corresponding to the annular groove 121 of the straw plate 110, as required. In the lamination process, the annular protruding strips of the ceramic rock plate 120 may be correspondingly accommodated in the annular groove 121 of the straw plate 110, so as to further reduce the relative displacement of the ceramic rock plate 120 and the straw plate 110 in the lamination process.

Embodiment four:

referring to fig. 6, in one embodiment, the glue spreading groove includes a plurality of groove points 131 disposed on the first surface 111 of the straw board 110. The reactive hot melt adhesive partially sinks into the plurality of groove points 131. Likewise, the glue spreading slot is provided to include a plurality of slot points 131 in order to reduce the relative displacement of the ceramic rock plate 120 with respect to the straw plate 110 in all directions during the fitting process. If necessary, the surface of the ceramic rock plate 120 attached to the straw plate 110 may be provided with protruding points corresponding to the groove points 131 of the straw plate 110. In the bonding process, the protruding points of the ceramic rock plate 120 may be correspondingly accommodated in the groove points 131 of the straw plate 110, so as to further reduce the relative displacement of the ceramic rock plate 120 and the straw plate 110 in the bonding process.

It will be appreciated that the sides of the straw board 110 and the ceramic rock board 120 are also provided with edge strips (not shown). The edge strip covers the sides of the straw board 110 and the ceramic rock board 120, thereby preventing moisture or other contaminants from entering the interior of the composite board 100.

Fifth embodiment:

another embodiment of the present invention also provides a piece of furniture including composite panel 100. The composite panel 100 is the composite panel 100 according to any one of the embodiments above. Since the composite board 100 includes the straw board 110, the ceramic rock board 120 is attached to the surface of the straw board 110. The ceramic rock plate 120 can improve the aesthetic property and the resistance strength of the surface of the plate, so that the surface style of the plate is more diversified, the appearance requirements of different people are met, and the luxury and the high grade of furniture are highlighted. Meanwhile, the ceramic rock plate 120 is high in hardness and good in wear resistance, so that the phenomenon of scratch or breakage on the surface of the plate can be effectively prevented, and the stability of the plate is high. In addition, since the straw board 110 is used as the base material in the composite board 100, the straw board 110 can effectively improve the nail holding force of the composite board 100. In addition, since the ratio of the water absorption thickness expansion rates of the straw board 110 and the ceramic rock board 120 is in the range of 0.05 to 20, it is possible to prevent the composite board 100 from being broken due to delamination of the straw board 110 and the ceramic rock board 120 during the long-term use of the composite board 100.

Example six:

it will be appreciated that the substrate 110 is not limited to being made of straw board. Referring to fig. 7, one embodiment of the present invention provides a composite panel 200 comprising foamed aluminum sheet 210 and ceramic rock sheet 220.

The aluminum foam sheet 210 is made of an aluminum foam material. The foamed aluminum is produced by adding additive into pure aluminum or aluminum alloy and foaming. The foamed aluminum has the characteristics of metal and air holes, and has the advantages of small density, high impact absorption capacity, high temperature resistance, high fireproof performance, corrosion resistance, sound insulation, noise reduction, low heat conductivity, high electromagnetic shielding property, high weather resistance, filtering capacity, easy processing, easy installation, high forming precision, surface coating and the like.

The ceramic rock plate 220 is attached to the first surface of the foamed aluminum plate 210.

In the composite board 200 provided in the present embodiment, ceramic rock plate 220 is attached to the surface of foamed aluminum plate 210. The ceramic rock plate 220 can improve the aesthetic property and the resistance strength of the surface of the plate, so that the surface style of the plate is more diversified, the appearance requirements of different people are met, and the luxury and the high grade of furniture are highlighted. On the other hand, the ceramic rock plate 220 is better in wear resistance due to higher hardness of the ceramic rock plate 220, and the ceramic rock plate 220 is attached to the surface of the foamed aluminum plate 210, so that the phenomenon of scratch or rupture on the surface of the plate can be effectively prevented, and the stability of the composite plate is higher.

In addition, since the inside of the composite panel 200 employs the foamed aluminum plate 210 as a base material, since the inside of the foamed aluminum plate 210 has a plurality of pore structures having different sizes and being irregular, it is possible to effectively improve the nail holding force of the foamed aluminum plate 210, thereby making the prepared composite panel 200 easy to splice, assemble using screws, and the like. On the other hand, since the difference in mechanical properties between the foamed aluminum plate 210 and the ceramic rock plate 220 is small, it is possible to avoid the phenomenon that the foamed aluminum plate 210 and the ceramic rock plate 220 are layered during the long-term use of the composite plate 200 to cause the damage of the composite plate 200. In particular, in the process of cutting the composite board 200, even though the ceramic rock plate 220 needs to spray water in the cutting process, the foamed aluminum plate 210 is not easily deformed after absorbing water, so that the phenomenon that the foamed aluminum plate 210 and the ceramic rock plate 220 are layered in the cutting process of the composite board 200 is avoided. That is, in this embodiment, since the foamed aluminum plate 210 is made of metal, the size of the foamed aluminum plate after absorbing water is not easy to change, so that the phenomenon that the foamed aluminum plate 210 and the ceramic rock plate 220 are layered during long-term use to cause damage to the composite plate can be avoided.

In fact, another important assessment factor in the field of furniture boards is the mechanical workability of the boards. That is, a large plate needs to be cut into small plates of various shapes or lengths, and then the cut plates are assembled by bonding, screwing, or the like. However, due to the high hardness and density of ceramic rock plates, water is typically required for cooling when cutting ceramic rock plates. If the base material of the composite board is made of wood board, the size change of the wood board after water absorption is relatively large, and the size change of the ceramic rock board after water absorption is relatively small, so that the composite board (wood base plate and ceramic panel) is easily layered in the cutting process, and the composite board is damaged. In the composite board provided by the embodiment of the invention, the substrate of the composite board is foamed aluminum board 210. Since the foamed aluminum plate 210 is stable in nature, the dimension after water absorption is not easy to change. Accordingly, the composite panel composed of the foamed aluminum plate 210 and the ceramic rock plate 220 is not greatly changed in size even if water is used for cooling during the cutting process of the composite panel, so that the foamed aluminum plate 210 and the ceramic rock plate 220 are not damaged due to the non-uniform expansion rate of water absorption. That is, the composite board made using the foamed aluminum plate 210 and the ceramic rock plate 220 has good mechanical cut resistance. Particularly, in the case where the ceramic rock plate 220 is required to be cut by water cooling, the mechanical cutting resistance of the composite plate composed of the foamed aluminum plate 210 and the ceramic rock plate 220 is more excellent.

In one embodiment, the density of the aluminum foam plate 210 is set at 0.2 to 0.4g/cm ³ Within the range. The density of the foamed aluminum plate 210 is set to 0.2 to 0.4g/cm ³ In the range, the whole weight of the composite board can be ensured not to be excessive while the high nail holding force is provided. For example, when the composite panel composed of the foamed aluminum sheet 210 is used in a door panel, the door panel is made to be light in weight and easy to open and close. In addition, the foamed aluminum plate 210 has good sound insulation and noise reduction effects, so that the sound insulation effect of the manufactured door panel is also good.

In one embodiment, composite panel 200 further includes backing plate 230. The backing 230 is attached to a second surface 212 of the foam aluminum plate 210 opposite the first surface 211. In this embodiment, the liner 230 comprises a second ceramic rock plate. By providing ceramic rock plate 220 on first surface 211 of aluminum foam plate 210 and providing backing plate 230 made of a second ceramic rock plate on second surface 212 of aluminum foam plate 210, the abrasion resistance of both sides of composite plate 200 will be better, thereby making composite plate 200 more suitable for applications in the door panel field. In this embodiment, the thickness of the lining plate 230 is less than or equal to the thickness of the ceramic rock plate 220. By attaching the lining plate 230 to the second surface of the aluminum foam plate 210 opposite to the first surface, on one hand, the lining plate 230 can effectively protect the aluminum foam plate 210 from corrosion; on the other hand, since both surfaces of the foamed aluminum plate 210 are covered with the ceramic rock plate 220 and the lining plate 230, respectively, the waterproof performance of the composite panel 200 can be further improved. At this time, the composite board 200 is not easily broken due to delamination of the composite board caused by the difference in the water absorption expansion ratio of the ceramic rock plate 220 and the foamed aluminum plate 210 during use.

In this embodiment, the expansion ratio of the foam aluminum plate 210 in the thickness of water absorption is less than or equal to 0.1%. Since the expansion ratio of the water absorption thickness of the foamed aluminum plate 210 is less than or equal to 0.1%, it can be sufficiently adapted to the expansion ratio of the water absorption thickness of the ceramic rock plate 220. The water absorption thickness expansion rate of the composite board 200 is less than or equal to 0.05% according to the requirement. In addition to the water absorption thickness expansion rate, the water absorption dimensional change rate in the length direction or the width direction is also an important consideration for the furniture plate. The change rate of the water absorption length or the change rate of the water absorption width of the foamed aluminum plate 210 is also less than or equal to 0.1% according to the requirement, thereby realizing the adaptation process with the ceramic rock plate 220.

It will be appreciated that the porosity and pore size of aluminum foam sheet 210 also affect the mechanical properties of the resulting composite panel 200. In one embodiment, the aluminum foam sheet 210 is a closed cell structure. The porosity of the foamed aluminum plate 210 is in the range of 80% to 90%. The pore diameter of the foamed aluminum plate 210 is in the range of 0.4 to 5 mm. By arranging the foamed aluminum plate 210 in a closed cell structure, the nail holding force of the foamed aluminum plate 210 can be further improved, enhancing the machinability of the foamed aluminum plate 210. In addition, the foamed aluminum plate 210 having a pore diameter in the range of 0.4 to 5mm is selected, which can also improve the nail holding force of the foamed aluminum plate 210 due to the smaller pore diameter of the pores therein.

In one embodiment, the ratio of the coefficient of thermal expansion of aluminum foam sheet 210 to the coefficient of thermal expansion of ceramic rock sheet 220 is in the range of 0.2 to 5. Similarly, the ratio of the thermal expansion coefficient of the foamed aluminum plate 210 to the thermal expansion coefficient of the ceramic rock plate 220 is set to be in the range of 0.2 to 5, and the foamed aluminum plate 210 and the ceramic rock plate 220 are not damaged due to delamination phenomenon caused by inconsistent dimensional changes when the temperature difference of the use environment of the composite plate is large.

The thickness of the foamed aluminum plate 210 is greater than or equal to 12mm. In one embodiment, the foamed aluminum sheet 210 has a thickness in the range of 12 to 40 mm. The ceramic rock plate 220 has a thickness of greater than or equal to 1mm. In one embodiment, the ceramic rock plate 220 has a thickness in the range of 1 to 6 mm. The purpose of setting the thickness of the foamed aluminum plate 210 in the range of 12 to 40mm is to: because the density of aluminum foam sheet 210 is significantly less than the density of ceramic rock sheet 220, aluminum foam sheet 210 of about 12 to 40mm can significantly reduce the overall weight of composite panel 200; meanwhile, setting the thickness of the foamed aluminum plate 210 to 12 to 40mm can also ensure that the composite plate 200 is manufactured to have a high nail holding force. That is, when the thickness of the foamed aluminum plate 210 is in the range of 12 to 40mm, the composite plate 200 has a high nail holding force, and at the same time, the weight of the plate is not excessively large, the installation and the transportation are convenient, and the use is more comfortable. In general, the nail-holding force refers to: the performance of the wood-anchored metal links (round nails, wood screws, etc.) is calculated by the force required to extract a screw of a certain size. In the present embodiment, the plate surface nail-holding force of the composite plate composed of the foamed aluminum plate 210 and the ceramic rock plate 220 is greater than or equal to 10N/mm ² . Therefore, the composite board 200 provided by the embodiment of the invention has a higher value of the nail holding force, and meets the requirements of the furniture industry.

The purpose of setting the thickness of the ceramic rock plate 220 in the range of 1 to 6mm is to: so that the ceramic rock plate 220 can adapt to the requirements of different use scenes. When composite board 200 is used on some non-high bearing capacity panels such as furniture side panels or door panels, thinner ceramic rock 220 may be selected. And thicker ceramic rock plate 220 is selected when composite plate 200 is used on some high bearing force deck surfaces such as countertops, cabinet panels, and the like of furniture. In this embodiment, the thickness of ceramic rock plate 220 is preferably 3mm. At this time, the ceramic rock plate 220 has moderate weight, wear resistance, bearing capacity and other properties, and meets the requirements of most users. And, the corresponding ceramic rock plate 220 has relatively low production cost and high comprehensive property.

In one embodiment, the composite panel 200 further includes a first glue layer 240 and a second glue layer 250.

The first glue layer 240 is disposed between the foamed aluminum plate 210 and the ceramic rock plate 220 for attaching the ceramic rock plate 220 to the foamed aluminum plate 210. The second adhesive layer 250 is disposed between the aluminum foam sheet 210 and the backing sheet 230 for attaching the backing sheet 230 to the aluminum foam sheet 210. In this embodiment, the lining plate 230 may be made of a metal plate or a second ceramic rock plate. When the lining plate 230 is made of the second ceramic rock plate, the material of the lining plate 230 may be the same as the material of the ceramic rock plate 220 or may be different from the material of the ceramic rock plate 220. In addition, when the lining plate 230 is made of a second ceramic rock plate, the thickness of the lining plate 230 is smaller than that of the ceramic rock plate 220. In this embodiment, the ceramic rock plate 220 is attached to the first surface of the aluminum foam plate 210 by a first glue layer 240; the backing plate 230 is attached to the second surface of the aluminum foam sheet 210 by a second adhesive layer 250. The first glue layer 240 and the second glue layer 250 are both reactive hot melt glue materials. It will be appreciated that one of the first adhesive layer 240 and the second adhesive layer 250 may also be provided as a reactive hot melt adhesive material. In one embodiment, the reactive hot melt adhesive material is a reactive polyurethane (PUR, polyurethane Reactive) hot melt adhesive material. Since the PUR hot melt adhesive material does not contain an organic solvent, the colloid coating can be performed at a lower temperature. And cooling and solidifying after the colloid coating to finish the primary bonding. In the subsequent process, the PUR hot melt adhesive material is cured by moisture in the air, and has excellent bonding strength and impact resistance after complete curing. Therefore, the foamed aluminum plate 210, the ceramic rock plate 220 and the lining plate 230 are bonded together by the reactive hot melt adhesive material, and the formed composite plate has high bonding strength.

Thus, in this embodiment, the ceramic rock plate 2 and the lining plate 230 are attached to the first surface 211 and the second surface 212 of the foamed aluminum plate 210 by reactive hot melt adhesive, respectively. The foamed aluminum plate 210, the ceramic rock plate 220, the lining plate 230, the first adhesive layer 240 and the second adhesive layer 250 are formed into an integrated composite plate structure after being cured by heating, pressurizing and pressing.

In one embodiment, the reactive hot melt adhesive is a PUR reactive hot melt adhesive. When the ceramic rock plate 220 and the lining plate 230 are attached to the foamed aluminum plate 210, the PUR reaction type hot melt adhesive is firstly put into a hot melt machine, and after preheating, heating and dispensing, the PUR reaction type hot melt adhesive is coated on the surface of the lining plate 230 to form a second adhesive layer 250 with the thickness of 0.1-0.2 mm. Then, the aluminum foam sheet 210 is directly faced over the second adhesive layer 250, and a first adhesive layer 240 having a thickness of 0.1 to 0.2mm is coated on the upper surface (first surface) of the aluminum foam sheet 210. And then the ceramic rock plate 220 is directly covered on the second adhesive layer 250 to form a composite board preform, and the composite board preform is placed into hot pressing equipment to be heated, pressurized and solidified to form a composite board finished product. During the manufacturing process, the temperature of the PUR reaction type hot melt adhesive is kept in the range of 80 to 110 ℃ when the PUR reaction type hot melt adhesive is preheated; the PUR reactive hot melt adhesive is heated to a temperature in the range of 120 to 130 ℃. If the heating temperature is too high, the PUR reactive hot melt adhesive is liable to burst and carbonize, thereby affecting the adhesive property. In the application process of the manufactured composite board, board cutting and material cutting are carried out according to the size of the board required by furniture processing, and then the outer periphery of the furniture board is subjected to edge sealing treatment, so that the furniture board is comprehensively protected. Therefore, the composite board provided by the embodiment of the invention has the characteristics of fire resistance, water resistance, worm damage resistance and the like. In addition, in order to improve the adhesion between the foamed aluminum plate 210 and the ceramic rock plate 220, a wave-shaped glue spreading groove may be opened at the first surface of the foamed aluminum plate 210. Meanwhile, in order to save the consumption of the PUR reaction type hot melt adhesive, the wave height of the adhesive spreading groove is controlled to be in the range of 0.8-1.2 mm, and the wavelength is controlled to be in the range of 1.2-1.8 mm. The glue spreading groove is integrally formed with the aluminum foam plate 210 when the aluminum foam plate 210 is manufactured and formed. When the PUR reaction type hot melt adhesive is paved on the foamed aluminum plate 210 with the structure, the PUR reaction type hot melt adhesive is partially sunk into the adhesive paving groove, and the fusion property with the PUR reaction type hot melt adhesive is better, so that the adhesion between the foamed aluminum plate 210 and the ceramic rock plate 220 is firmer. Moreover, the wave height and the wave length of the glue spreading groove are strictly controlled, so that the waste of the PUR reaction type hot melt adhesive can be effectively avoided, and the production cost of the composite board provided by the embodiment of the invention is controlled. Meanwhile, the formaldehyde content of the composite board is detected, formaldehyde is not detected, and the composite board belongs to an environment-friendly board product with zero formaldehyde.

In addition, since in the present embodiment, the foamed aluminum plate 210 is used as the base material of the composite plate. The surface of the foamed aluminum plate 210, which is attached to the ceramic rock plate 220, has a porous structure 213, as shown in fig. 8. When the aluminum foam sheet 210 and the ceramic rock sheet 220 are bonded using the first glue layer 240, the first glue layer 240 is partially disposed in the porous structure 213. That is, when the first adhesive layer 240 is used to bond the aluminum foam sheet 210 and the ceramic rock plate 220, the porous structure 213 of the surface of the aluminum foam sheet 210 can increase the contact area between the first adhesive layer 240 and the aluminum foam sheet 210, thereby making the adhesion property of the aluminum foam sheet 210 and the ceramic rock plate 220 better.

Embodiment seven:

it will be appreciated that the foam aluminum plate 210 may also be provided with glue grooves 214 on its surface, as shown in fig. 9. The glue placement groove 214 may improve adhesion between the aluminum foam board 210 and the ceramic rock board 220. It will be appreciated that, since the surface of the foamed aluminum plate 210 has the porous structure 213, the porous structure 213 is also located in the groove body of the glue spreading groove 214, thereby further improving the adhesion between the foamed aluminum plate 210 and the ceramic rock plate 220.

It will be appreciated that the sides of the foamed aluminum plate 210 and the ceramic rock plate 220 are further provided with edge strips (not shown). The edge strip covers the sides of the foamed aluminum plate 210 and the ceramic rock plate 220, thereby preventing moisture or other contaminants from entering the interior of the composite plate 200.

Example eight:

the invention also discloses a door plate manufactured by using the composite plate provided by any one of the embodiments. Referring to fig. 10 and 11, a door panel 300 according to an embodiment of the present invention includes a composite panel 200, where the composite panel 200 is the composite panel 200 according to any one of the above embodiments. In this embodiment, the door panel 300 is further provided with a sealing strip 260 at the periphery thereof. In manufacturing the door panel 300, the door panel 300 of a predetermined size is generally cut out according to the specification size of the door panel 300 using the composite panel. After the door panel 300 is cut, an edge sealing process is performed on the outer circumference of the door panel 300 in order to protect the outer edge of the door panel 300 and to prevent cracking and deformation of the door edges. Specifically, in the door panel structure provided by the embodiment of the present invention, the door panel 300 is protected by attaching the edge strip 260 to the outer side Zhou Tie thereof. Preferably, in order to further enhance the structural strength and appearance of the door panel structure, the edge strip 260 includes an outer skin 270 for serving as an outer surface of the edge strip 260. The outer surface 270 is made of aluminum sheet, aluminum alloy sheet or ABS plastic sheet. Wherein, the ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S), and the relative content of the three monomers can be arbitrarily changed, thereby preparing various resins. ABS plastic has the common properties of three components. Acrylonitrile (A) makes it resistant to chemical corrosion, heat and certain surface hardness; butadiene (B) imparts high elasticity and toughness; styrene (S) imparts thermoplastic processability and improves electrical properties. Since the ABS plastic sheet has excellent properties, it can serve as the outer skin 270 of the edge band 260. Preferably, because of the relatively high material cost of the aluminum sheet or aluminum alloy sheet, the edge strip 260 may be manufactured in a manner that the aluminum sheet and PVC glue layer 280 are laminated or the aluminum alloy sheet and PVC glue layer 280 are laminated in order to tightly control the cost of the edge strip 260. Wherein the thickness of the aluminum sheet or the aluminum alloy sheet is 0.03mm. The outer surface 270 is provided with a PVC glue layer 280 on the side that is attached to the outer periphery of the door panel 300. The edge strip 260 has a thickness of 1mm. The manner of the composite layer of the aluminum sheet and the PVC adhesive layer 280 or the manner of the composite layer of the aluminum alloy sheet and the PVC adhesive layer 280 can enable the edge sealing strip 260 to have the appearance texture of the aluminum sheet or the aluminum alloy sheet on the outer side surface. Meanwhile, the PVC adhesive layer 280 compounded on the inner side can fully spread out an aluminum sheet or an aluminum alloy sheet so as to facilitate adhesion, so that the edge sealing strip 260 has corresponding structural strength. Therefore, the edge banding 260 with the thickness of 1mm is formed by the aluminum sheet or aluminum alloy sheet composite PVC adhesive layer 280 with the thickness of 0.03mm, compared with the edge banding 260 directly formed by the aluminum sheet or aluminum alloy sheet with the thickness of 1mm, the material cost is greatly reduced, the toughness is better, and the edge banding effect is better. In this embodiment, the edge strip 260 is attached to the outer periphery of the door panel 300 by a third glue layer 290. In addition, the edge banding 260 may be formed by laminating and compounding an ABS plastic sheet and a PVC glue layer 280.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A composite panel, comprising

A substrate having a first surface and a second surface; and

a first ceramic rock plate attached to a first surface of the substrate;

wherein the ratio of the water absorption thickness expansion rate of the substrate to the water absorption thickness expansion rate of the first ceramic rock plate is in the range of 0.05 to 20;

the composite board also comprises a lining board,

the lining plate comprises a second ceramic rock plate;

the thickness of the lining plate is smaller than or equal to that of the first ceramic rock plate.

2. The composite panel of claim 1, wherein the composite panel comprises,

the lining plate is attached to the second surface of the base material;

the thickness ratio of the first ceramic rock plate to the lining plate is n:1, wherein the value of n is in the range of 2 to 10.

3. The composite panel of claim 1, wherein the composite panel comprises,

The base material is a foam aluminum plate.

4. The composite panel of claim 3, wherein the composite panel comprises,

the plate surface nail holding force of the composite plate is more than or equal to 10N/mm ² 。

5. The composite panel of claim 3, wherein the composite panel comprises,

the ceramic tile comprises a first adhesive layer which is arranged between the base material and the first ceramic rock plate.

6. The composite panel of claim 5, wherein the composite panel comprises,

the first surface of the foamed aluminum plate is provided with a porous structure, and the first adhesive layer is partially arranged in the porous structure.

7. The composite panel of claim 3, wherein the composite panel comprises,

the density of the foamed aluminum sheet is in the range of 0.2 to 0.4g/cm 3.

8. A door panel comprising a composite panel, wherein the composite panel is a composite panel according to any one of claims 1 to 7.

9. The door panel of claim 7, further comprising:

and the edge banding strips are attached to the periphery of the door plate.

10. The door panel of claim 7, wherein the edge strip comprises an outer skin layer that is an aluminum sheet, an aluminum alloy sheet, or an ABS plastic sheet.

11. The door panel of claim 7, wherein the edge strip further comprises a PVC glue layer disposed on a side of the outer skin that is bonded to the periphery of the door panel.

12. A piece of furniture comprising a composite panel, characterized in that the composite panel is a composite panel according to any one of claims 1 to 7.