Processing technology of veneer artificial board

Abstract

The invention belongs to the technical field of hot presses, and particularly relates to a facing artificial board processing technology which specifically comprises the steps that melamine impregnated bond paper is pasted to an artificial board after being pressurized and heated, the heating mode is that heat is provided in the mode that a graphene material is powered on to emit heat, and the heat is supplied to the artificial board; the graphene material is graphene crystals or graphene tows; heat is provided for processing of the facing artificial board by adopting a mode of electrifying and heating the graphene material, the heating speed is high, the heat utilization rate is high, the energy consumption is low, safety, environmental protection and energy conservation are realized, and the current situations of high energy consumption, high pollution and high safety risk in the facing artificial board production industry can be fundamentally solved.

Description

Technical Field

[0001] The invention belongs to the technical field of plate processing, and in particular relates to a processing technology for a veneer artificial board. Background Art

[0002] As the country attaches great importance to environmental protection, especially in recent years, the control of air pollution has been strengthened. The CO, CO2, NO S The emission of harmful gases such as pollutants has been included in the key control scope.

[0003] The surface decoration materials of furniture and decorative facing artificial boards include melamine impregnated film paper, PVC, fireproof board, water-based paint and solvent-based paint (commonly known as paint). Among them, melamine impregnated film paper pasted on artificial boards by hot press is the most widely used. At present, the structural forms of artificial board hot presses are various, but their basic structure and working principle are roughly the same: they mainly include hot press plates and oil cylinders, and the oil cylinder controls the movement of one hot press plate to another hot press plate to achieve pressurization; a heating channel is opened in the hot press plate, and heat is usually provided to the hot press plate by heat-conducting oil or resistance wire, heating tube, etc. However, the above methods of providing heat to the hot press machine all have major disadvantages.

[0004] The heat source for the hot press is mainly to use natural gas to heat the heat transfer oil (medium) in the boiler (mold temperature controller), which is then pressurized by a circulating pump and transported to the hot press plate through a pipeline, so that the hot press plate has the necessary working temperature. However, my country relies on large-scale imports of natural gas, which produces a large amount of CO2 and NO when burned. S Harmful gases such as argon, argon and chlorine are emitted into the air, and the boiler (mold temperature controller) furnace body, exhaust port, circulation pump, pipeline, valve, etc. have a large heat loss, and the thermal energy utilization rate is about 45%. At the same time, a large number of safety accidents are related to it. Laboratories or small batch production often use resistance wires, heating tubes, etc. to heat the pressing plate, which are easy to oxidize and have a short service life. During use, problems are prone to occur, delaying production and increasing costs. In addition, the thermoelectric conversion rate is relatively low and the heating speed is slow. This has also resulted in the use of resistance wires and heating tubes to heat the hot pressing plate in this field, which is rarely used, which is not conducive to industrial production applications. Summary of the invention

[0005] In response to the current technical problems, the present invention provides a processing technology for veneer artificial boards, which uses graphene materials to generate electricity and heat to provide heat for the processing of veneer artificial boards. It has a fast heating speed, high heat utilization rate, low energy consumption, safety, environmental protection and energy saving, and can fundamentally solve the current situation of high energy consumption, high pollution and high safety risks in the veneer artificial board production industry.

[0006] The technical solution of the present invention is as follows:

[0007] A processing technology for veneer artificial board, the processing technology is: melamine impregnated film paper is pasted on the artificial board after being pressurized and heated, the heating method adopts the method of graphene material heating by electricity to provide heat, the graphene material is graphene crystal or graphene filament bundle, the pressurization pressure is ≤18MPA, and the heating temperature is 200-250℃.

[0008] Preferably, the graphene crystals are ≤3 microns and have a purity of ≥99%.

[0009] Preferably, the graphene material is 100-300 g / m 2 set up.

[0010] Preferably, the method of heating the graphene material by electricity is specifically implemented by using a graphene heater, and the graphene heater is arranged on a hot press; the graphene heater includes a combination part and a pressure-bearing part, the combination part is connected to the pressure-bearing part, and the combination part includes a heat transfer layer, an insulating layer, a graphene heating layer, an insulating layer, a heat insulation layer, and a protective cover plate in sequence; the pressure-bearing part is arranged in the combination part, and the pressure-bearing part is arranged between the heat transfer layer of the combination part and the edges of the protective cover plate, and the heat transfer layer, the protective cover plate and the interior of the pressure-bearing part are arranged with an insulating layer, a graphene heating layer and a heat insulation layer; the graphene heating layer is connected to a wire, and the wire passes through the pressure-bearing part to connect to a control system; the outer side surface of the pressure-bearing part is flush with the outer side surface of the heat transfer layer and the protective cover plate.

[0011] Further preferably, a pressure strip is arranged between the heat transfer layer and the insulating layer on the combined part, the pressure strip is connected to the pressure bearing part, and the surface of the pressure strip is flush with the surface of the pressure bearing part.

[0012] Further preferably, a temperature measuring element is provided on the graphene heating layer, and the temperature measuring element is connected to the control system through a wire, and the temperature measuring element transmits the detected temperature to the control system, and the specific temperature can be displayed in the control system. More preferably, an insulating layer is provided between the pressure-bearing part and the graphene heating layer, and the wires connected to the graphene heating layer and the wires connected to the temperature measuring element all pass through the insulating layer, and the pressure-bearing part is connected to the control system.

[0013] Further preferably, the insulating layer is made of insulating glue, the insulating glue resistance is 0.5MΩ / kV to 1MΩ / kV, high temperature resistance is above 300°C, and the weight is 100 to 300g / m 2 set up.

[0014] Further preferably, the heat transfer layer is made of stainless steel, manganese steel or aluminum alloy with a thickness of ≥3mm; the pressure strip has a pressure strength of ≥70kg / cm 2 High hardness metal material, thickness ≥3mm, compressive strength ≥70kg / cm 2 High hardness metal material, the pressure-bearing part has a pressure strength of ≥70kg / cm 2The high-hardness metal material has a width of ≥5mm; the thermal insulation layer is a polymer material with a thermal conductivity of ≤0.2 (w / m·k) and a thickness of ≥3mm; the protective cover is made of stainless steel, manganese steel or aluminum alloy material with a thickness of ≥1mm; the protective cover is made of stainless steel, manganese steel or aluminum alloy material with a thickness of ≥1mm.

[0015] Further preferably, the total thickness of the graphene heater is ≤15 mm.

[0016] Further preferably, two ends of the graphene heating layer are connected to terminals, and the terminals are connected to the wires and the graphene heating layer.

[0017] Further preferably, the temperature of the graphene heater can be controlled within ±1°C of the set temperature.

[0018] In the present invention, melamine impregnated adhesive film paper is adhered to particle board or density board by pressurized heating. According to the properties of the substrate, the temperature provided, the pressure endured and the range of temperature control of the graphene heater in the present invention can meet the requirements of the above process.

[0019] Graphene heating materials have excellent thermal conductivity. The carrier (conductive ion) of graphene at room temperature is 15000cm / (V·s), which is ten times higher than that of silicon materials and more than twice that of indium antimonide (nSb), the material with the highest known carrier mobility. Graphene materials need to be energized to generate heat. When the electrodes at both ends of the graphene heating layer are energized, the carbon molecules in the electric heating layer generate phonons, ions and electrons in the resistor. The generated carbon molecular groups rub and collide with each other to generate heat energy, which is also called Brownian motion. The heat energy generated by the collision is uniformly radiated in a planar manner by controlling the far infrared rays with a wavelength of 5-14 microns. The total conversion rate of effective electric heat energy of graphene materials is more than 99.5%. At the same time, the superconductivity of graphene materials can ensure stable heating performance. In the present invention, electrical energy is converted into thermal energy through the instantaneous heating characteristics of the graphene heating layer, thereby avoiding the problems of high energy consumption, high risk, low heat conversion efficiency, high cost, environmental pollution, etc. in traditional heat-providing methods such as thermal oil, and avoiding the problems of short service life, easy failure, slow heating, low heat conversion efficiency, high cost, etc. in traditional heat-providing methods such as resistance wire and heating tube.

[0020] The present invention provides a processing technology for a veneer artificial board, which uses graphene materials to generate electricity and heat instead of traditional heating methods, thereby avoiding the generation of CO, CO2, NO SHarmful gases such as carbon dioxide and carbon dioxide are eliminated, thus avoiding environmental pollution; the use of graphene materials for heating after power on improves the utilization rate of thermal energy, and the comprehensive thermal energy utilization rate reaches more than 85%; the use of graphene materials can generate heat instantly after power on, effectively improving work efficiency and increasing production capacity; there is no need for full-time technicians to maintain the boiler, and there is no need to regularly replace and replenish the heat transfer oil, which improves efficiency and saves manpower and material resources; especially in recent years, the country has vigorously developed green electricity, electricity prices have dropped, and natural gas prices have risen every year. The use of the heat press of the present invention can save more than 35% of costs; since boilers, pressure pipelines and natural gas are not used, safety hazards are eliminated and the risk factor is reduced; compared with traditional The heat supply method of heat-conducting oil, resistance wire and heating tube increases the heating speed, improves the heat conversion efficiency, reduces the cost, increases the service life, improves the production efficiency, avoids the occurrence of safety accidents and improves the safety factor; the graphene heater can be directly fixed on the hot pressing plate of the hot press, without the need to modify the original equipment or special technology; the graphene heater can be manufactured in different specifications (such as 4×8 feet, 4×9 feet, 5×8 feet) according to needs, which is suitable for new equipment and old equipment modification; the graphene heater used in the hot press has undergone 3000 hours of continuous testing, and the equipment operates normally and has a long service life.

[0021] The present invention provides a processing technology for veneer artificial boards, which uses a graphene material to generate heat through electricity to provide heat for the processing of the veneer artificial boards. The technology has high thermal utilization rate, low energy consumption, safety, energy saving and environmental protection, instantaneous power generation, and effectively improves production efficiency and production capacity. It also has a long service life and can fundamentally solve the current situation of high energy consumption, high safety risks and high pollution in the veneer artificial board production industry. The technology is suitable for industrial production and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the graphene heater in the present invention;

[0023] Figure 2 It is a structural schematic diagram of the pressure-bearing part of the graphene heater;

[0024] Figure 3 It is a structural schematic diagram of a graphene heater assembly;

[0025] Figure 4 It is a schematic diagram of a structure with a pressure-bearing strip in a graphene heater assembly;

[0026] Figure 5 It is a schematic diagram of the structure of the graphene heater and the hot pressing plate;

[0027] In the figure, 1 is a heat transfer layer, 2 is an insulating layer, 2-1 is an insulating layer A, 2-2 is an insulating layer B, 2-3 is an insulating layer C, 3 is a graphene heating layer, 4 is a heat insulating layer, 5 is a protective cover plate, 6 is a pressure strip, 7 is a pressure part, 8 is a through hole, 9 is a wire groove, 10 is a hot press, 11 is a hot pressing plate, and 12 is a graphene heater. DETAILED DESCRIPTION

[0028] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection requested by the present application.

[0029] A processing technology for a veneer artificial board, the processing technology specifically comprises: melamine impregnated adhesive film paper is pasted on the artificial board after being pressurized and heated, the heating method adopts the method of heating graphene material by electricity to provide heat, the graphene material is graphene crystal or graphene filament bundle; the graphene crystal is ≤3 microns, and the purity is ≥99%; the pressurization pressure is ≤18MPA, the heating temperature is 200-250℃, and the artificial board is particle board or density board.

[0030] Graphene materials are 100~300g / m 2 The specific graphene material is 100g / m 2 , 150g / m 2 , 200g / m 2 or 300g / m 2 set up.

[0031] like Figure 1-3 The method of heating the graphene material by electricity is specifically implemented by using a graphene heater 12, and the graphene heater 12 is arranged on a hot press 10; the graphene heater 12 includes a combination part and a pressure-bearing part 7, the combination part is connected to the pressure-bearing part 7, and the combination part includes a heat transfer layer 1, an insulating layer 2, a graphene heating layer 3, an insulating layer 2, a heat insulation layer 4, and a protective cover plate 5 in sequence; the pressure-bearing part 7 is arranged in the combination part, and the pressure-bearing part 7 is arranged between the edges of the heat transfer layer 1 and the protective cover plate 5 of the combination part, and the heat transfer layer 1, the protective cover plate 5 and the interior of the pressure-bearing part 7 are provided with an insulating layer 2, a graphene heating layer 3, and a heat insulation layer 4; the graphene heating layer 3 is connected to a wire, and the wire passes through the pressure-bearing part 7 to connect to a control system; the outer side surface of the pressure-bearing part 7 is flush with the outer side surfaces of the heat transfer layer 1 and the protective cover plate 5; the combination part and the pressure-bearing part 7 are connected by screws, and the screws pass through the protective cover plate 5, the pressure-bearing part 7 and the heat transfer layer 1 to connect the combination part and the pressure-bearing part 7, and can also be connected in other commonly used ways in the prior art.

[0032] An insulating layer 2 (not shown in the figure) is arranged between the pressure-bearing part 7 and the graphene heating layer 3, that is, the graphene heating layer 3 is surrounded by the insulating layer 2. A temperature measuring element is arranged on the graphene heating layer 3, and the temperature measuring element is connected to the control system through a wire. The temperature measuring element transmits the detected temperature to the control system, and the specific temperature can be displayed in the control system. The wires connected to the graphene heating layer 3 or the wires connected to the temperature measuring element pass through the insulating layer 2 and the pressure-bearing part 7 to connect to the control system. The temperature measuring element is mainly used to monitor the temperature in real time to ensure the normal operation of the heater and effectively avoid the occurrence of safety accidents. Through holes 8 are arranged at both ends or one end of the pressure-bearing part 7, and the wires can pass through the through holes 8 to connect to the control system. A through hole 8 is arranged only at one end of the pressure-bearing part 7, and a wire groove 9 is arranged on the inner side of the pressure-bearing part 7. The wire groove 9 is connected to the through hole 8, such as Figure 2 As shown. Because both ends of the graphene heating layer 3 need to be connected with wires, because the wires connecting the graphene heating layer 3 at the end far away from the through hole 8 and the wires connected to the temperature measuring element pass through the wire groove 9, through the insulating layer 2 and the through hole 8 to connect to the control system. In actual use, it will also make the connection of the wires safer, more beautiful, and easier to fix the position. The pressure-bearing part 7 is composed of four sub-pressure-bearing parts, and the sub-pressure-bearing parts are connected by snap-fitting. Wire grooves 9 are set on the inner sides of the four sub-pressure-bearing parts 7, and a through hole 8 is set on one of the sub-pressure-bearing parts (that is, one end of the pressure-bearing part 7), and the through hole 8 is connected to the wire groove 9.

[0033] like Figure 4 As shown, a pressure strip 6 is arranged between the heat transfer layer 1 and the insulating layer 2 on the combined part, and the pressure strip 6 is connected to the pressure bearing part 7 and connected by adhesive. The surface of the pressure strip 6 close to the heat transfer layer 1 is flush with the surface of the pressure bearing part 7 close to the heat transfer layer 1. A plurality of pressure strips 6 can be arranged and evenly distributed laterally. The pressure strips 6 can be in contact with each other or there can be gaps between them. The function of the pressure strip 6 is to protect the graphene heating layer 3.

[0034] The insulation layer 2 is made of insulating glue, with an insulation resistance of 0.5MΩ / kV, 0.8MΩ / kV or 1MΩ / kV, high temperature resistance above 300℃, and a strength of 100-300g / m 2 Settings, you can choose 100g / m 2 , 150g / m 2 , 200g / m 2 or 300g / m 2 .

[0035] The heat transfer layer 1 is made of stainless steel, manganese steel or aluminum alloy with a thickness of ≥3mm; the pressure strip 6 has a pressure strength of ≥70kg / cm 2 High hardness metal materials, such as 201 stainless steel, manganese steel, thickness ≥ 3mm; pressure-bearing part 7 also has a pressure-bearing strength of ≥ 70kg / cm 2The graphene heater 12 is made of a high-hardness metal material, such as 201 stainless steel, manganese steel, the width of the pressure-bearing part is ≥5mm, the heat insulation layer 4 is a polymer material with a thermal conductivity of ≤0.2 (w / mk), such as a polystyrene board, a tetrafluoroethylene board, and a thickness of ≥3mm, and the protective cover plate 5 is made of stainless steel, manganese steel or aluminum alloy material, with a thickness of ≥1mm; the protective cover plate 5 is made of stainless steel, manganese steel or aluminum alloy material, with a thickness of ≥1mm. The total thickness of the graphene heater 12 is ≤15mm.

[0036] Both ends of the graphene heating layer 3 are connected to terminals, whose diameter is ≥3 mm. The terminals connect the wires and the graphene heating layer 3 , and the design of the terminals is mainly for the convenience of connecting the wires.

[0037] The temperature of the graphene heater 12 can be controlled within ±1°C of the set temperature.

[0038] In the present invention, sealant is used to seal gaps between the combined parts, between the pressure-bearing part 7 and the combined parts, and between the pressure-bearing part and the conductors, so as to ensure the sealing, stability and safety of the structure.

[0039] The control system adopts a PLC control system, the specific equipment is a control cabinet, and the control system is electrically connected to the alarm device. First, set a suitable temperature in the control system, and the temperature measuring element transmits the monitored temperature to the control system. When the system detects that the temperature has not reached the preset temperature, the control system controls to open the switch and start to energize the graphene heating layer 3. When the temperature reaches the set temperature, the temperature measuring element transmits the monitored temperature to the control system. When the system detects that the temperature reaches the preset temperature, the control system controls to close the switch and stop energizing the graphene heating layer 3; the temperature measuring element transmits the monitored temperature to the control system. When the temperature is too high or too low for a long time and exceeds a certain limit, the control system will control the alarm device to send an alarm signal, which can effectively verify whether the monitoring device is operating normally and effectively prevent the occurrence of safety accidents.

[0040] In the present invention, melamine impregnated adhesive film paper is adhered to particle board or density board by pressurized heating. According to the properties of the substrate, the temperature provided, the pressure endured and the range of temperature control of the graphene heater 12 in the present invention can meet the requirements of the above process.

[0041] Example 1

[0042] A processing technology for a veneer artificial board, the processing technology specifically comprises: melamine impregnated film paper is pasted on a particle board after being pressurized and heated, the heating method adopts a graphene material to provide heat by heating by electricity, the graphene material is a graphene crystal with a particle size of ≤3 microns and a purity of ≥99%, and a weight of 150 g / m 2 The settings are: the pressurized pressure is 18MPA and the heated temperature is 250℃.

[0043] Example 2

[0044] The method of heating the graphene material by electricity is specifically implemented by using a graphene heater 12. The structural schematic diagram of the graphene heater 12 is shown in FIG. Figure 1 As shown, the graphene heater 12 is disposed on the hot press 10, and the bottom or top of the hot press plate 11 of the hot press 10 is connected to the graphene heater 12, as shown in FIG. Figure 5 As shown, screw connection can be adopted, the screw passes through the hot pressing plate 11 and is connected to the graphene heater 12, the screw is arranged at a position corresponding to the pressure-bearing part, the protective cover plate 5 contacts the hot pressing plate 11, and other methods of the prior art can also be adopted to connect the hot pressing plate 11 and the graphene heater 12.

[0045] The graphene heater 12 includes a combination part and a pressure-bearing part 7, the combination part is connected to the pressure-bearing part 7, and the combination part includes a heat transfer layer 1, an insulating layer 2, a graphene heating layer 3, an insulating layer 2, a heat insulation layer 4, and a protective cover plate 5 in sequence; the pressure-bearing part 7 is arranged in the combination part, and the pressure-bearing part 7 is arranged between the edges of the heat transfer layer 1 and the protective cover plate 5 of the combination part, and the insulating layer 2, the graphene heating layer 3, and the heat insulation layer 4 are arranged inside the heat transfer layer 1, the protective cover plate 5 and the pressure-bearing part 7; the graphene heating layer 3 is connected to a wire, and the wire passes through the pressure-bearing part 7 to connect to the control system; the outer side surface of the pressure-bearing part 7 is flush with the outer side surface of the heat transfer layer 1 and the protective cover plate 5; the combination part and the pressure-bearing part 7 are connected by screws, and the screws pass through the protective cover plate 5, the pressure-bearing part 7 and the heat transfer layer 1. Connect the combined part and the pressure-bearing part 7; an insulating layer 2 is arranged between the pressure-bearing part 7 and the graphene heating layer 3, and the wires connected to the graphene heating layer 3 and the wires connected to the temperature measuring element can pass through the insulating layer 2 and the pressure-bearing part 7 (through the through hole 8) to connect to the control system; a temperature measuring element is arranged on the graphene heating layer 3, and three temperature measuring elements are arranged. The temperature measuring element is connected to the control system through a wire, and the temperature measuring element transmits the detected temperature to the control system, and the specific temperature can be displayed in the control system; the wires connected to the graphene heating layer 3 or the wires connected to the temperature measuring element are all connected to the control system through the pressure-bearing part 7; the heat transfer layer 1 is made of stainless steel, manganese steel or aluminum alloy, with a thickness of ≥3mm; the pressure-bearing strip 6 has a pressure strength of ≥70kg / cm 2 The high-hardness metal material has a thickness of ≥3mm; the pressure-bearing part 7 also has a pressure-bearing strength of ≥70kg / cm 2 The high hardness metal material is 5mm≤the width of the pressure-bearing part≤30mm; the insulation layer 2 is made of insulating glue, the insulation glue resistance is 0.5MΩ / kV~1MΩ / kV, high temperature resistance is above 300℃, and the pressure is 100~300g / m 2The heat insulation layer 4 is a polymer material with a thermal conductivity of ≤0.2 (w / m·k) and a thickness of ≥3mm; the protective cover plate 5 is made of stainless steel, manganese steel or aluminum alloy material with a thickness of ≥1mm; the protective cover plate 5 is made of stainless steel, manganese steel or aluminum alloy material with a thickness of ≥1mm; the graphene heating layer 3 is composed of graphene crystals or graphene filaments with a density of 100-300g / m 2 set up.

[0046] Through holes 8 are provided at both ends of the pressure-bearing part 7, and wires are provided in the through holes 8. The wires connected to the graphene heating layer 3 or the wires connected to the temperature measuring element all pass through the insulating layer 2 and the through holes 8 to be connected to the control system; the two ends of the graphene heating layer 3 are connected to wiring posts, whose diameter is ≥3mm, and the wiring posts connect the wires and the graphene heating layer 3; the control system adopts a PLC control system, and the specific equipment is a control cabinet, and the control system is electrically connected to the alarm device.

[0047] The present invention provides a novel hot press 10, in which the temperature of the graphene heater 12 can be controlled within ±1°C of the set temperature, the pressure it withstands is ≤18MPA, and the temperature is 200-250°C.

[0048] Example 3

[0049] A graphene heater 12:

[0050] On the basis of the above-mentioned embodiment 2, a pressure strip 6 is arranged between the heat transfer layer 1 and the insulating layer 2 on the combined part. The pressure strip 6 is snap-connected to the pressure bearing part 7 and adhesively connected. The surface of the pressure strip 6 close to the heat transfer layer 1 is flush with the surface of the pressure bearing part 7 close to the heat transfer layer 1. A plurality of pressure strips 6 can be arranged and evenly distributed laterally. The pressure strips 6 can be in contact with each other or there can be gaps between them. The function of the pressure strip 6 is to protect the graphene heating layer 3.

[0051] A through hole 8 is provided at one end of the pressure-bearing part 7, and a wire groove 9 is provided on the inner side of the pressure-bearing part 7, and the wire groove 9 is connected to the through hole 8. Because the graphene heating layer 3 is connected to the wires at both ends, the wires connected to the graphene heating layer 3 at the end far from the through hole 8 and the wires connected to the temperature measuring element pass through the wire groove 9 and pass through the through hole 8 to connect to the control system. In actual use, the connection of the wires will be safer, more beautiful, and easier to fix.

[0052] Example 4

[0053] A graphene heater 12:

[0054] The heat transfer layer 1 of the graphene heater 12 is selected to be a 201 stainless steel plate with a thickness of 5 mm; the thickness is selected to be 5 mm, and the pressure bearing strength is 80 kg / cm 2High-hardness 201 stainless steel is laid horizontally on the heat transfer layer 1. Four pressure strips 6 can be set and evenly distributed. The pressure strips 6 and the heat transfer layer 1 are connected by gluing; the insulation layer A2-1 is an insulating glue with a resistance of 1MΩ / kV, high temperature resistance above 300℃, and a thickness of 150g / m 2 The graphene heating layer 3 is evenly coated on the surface of the pressure strip 6 and the heat transfer layer 1 by roller coating. The particle size of the graphene heating layer 3 is ≤2 microns. The graphene crystals with a purity of 99% are evenly coated on the insulating layer A 2-1 by roller coating. Three thermocouples (temperature sensors, i.e. temperature measuring elements) are set and installed in three temperature zones of the graphene heating layer 3 respectively; the insulating layer B2-2 is an insulating glue with a resistance of 1MΩ / kV, a high temperature resistance of more than 300℃, and a thickness of 150g / m 2 The graphene heating layer 3 is evenly coated with a roller coating method; the heat insulation layer 4 is a polymer material (polystyrene board) with a thickness of 4mm and a thermal conductivity of ≤0.2 (w / mk), covering the insulating layer B 2-2; the protective cover plate 5 (stainless steel) is 1.5mm thick and covers the insulation layer 4, and the protective cover plate 5 and the insulation layer 4 are connected by adhesive; sub-pressure parts (201 stainless steel) are arranged at the edges of the pressure strip 6, the insulation layer 2, the graphene heating layer 3, and the insulation layer 4, and the width of the pressure part is 5mm. The sub-pressure parts are connected by snapping to form a pressure part 7, and the upper and lower surfaces of the pressure part 7 are in contact with the heat transfer layer 1 and the protective cover plate 5 respectively. The outer side surface of the pressure part 7 is flush with the outer side surface of the heat transfer layer 1 and the protective cover plate 5, through holes 8 are arranged at both ends of the pressure part 7, and an insulating layer C is also arranged between the graphene heating layer 3 and the pressure part 7. 2-3, the insulating glue used is the same as that of the insulating layer A, the wires connected to the graphene heating layer 3 and the wires connected to the temperature measuring element can all pass through the insulating layer C 2-3 and the pressure-bearing part 7 (through the through hole 8) to connect to the control system; 201 high-strength screws pass through the protective cover plate 5, the pressure-bearing part 7 and the heat transfer layer 1 to fix them; both ends of the graphene heating layer 3 are connected to terminal posts with a diameter of 3mm, the terminal posts are connected to wires, the wires pass through the insulating layer C2-3, the heating through hole 8 of the pressure-bearing part 7 to connect to the control system, and the control system is electrically connected to the alarm device. At this time, the total thickness of the entire graphene heater 12 is 13mm; high-strength screws pass through the hot pressing plate on the hot press 10 to connect the graphene heater 12.

[0055] In the prior art, melamine impregnated adhesive film paper is pasted on the artificial board by pressurizing and heating. A heating channel is opened in the hot pressing plate 11 on the traditional hot press 10, and heat is usually provided to the hot pressing plate 11 by means of heat-conducting oil or resistance wire, heating tube, etc. The hot press 10 with a graphene heater 12 provided by the present invention can replace the traditional way of providing heat. The original hot press 10 can remain unchanged, and the graphite heater is directly set on one side of the original hot pressing plate 11 that provides heat. The original heating method is suspended (the heat-conducting oil, etc. can also be taken out), and the graphene heater 12 of the present invention can be powered on to generate heat.

[0056] The present invention provides a processing technology for a veneer artificial board, which uses graphene materials to generate electricity and heat instead of traditional heating methods, thereby avoiding the generation of CO, CO2, NO S Harmful gases such as carbon dioxide and carbon dioxide are eliminated, thus avoiding environmental pollution; the use of graphene materials for heating after power on improves the utilization rate of thermal energy, and the comprehensive thermal energy utilization rate reaches more than 85%; the use of graphene materials can generate heat instantly after power on, effectively improving work efficiency and increasing production capacity; there is no need for full-time technicians to maintain boilers, and there is no need to regularly replace and replenish heat transfer oil, which improves efficiency and saves manpower and material resources; especially in recent years, the country has vigorously developed green electricity, electricity prices have dropped, and natural gas prices have risen every year. The use of the hot press 10 of the present invention can save more than 35% of costs; since boilers, pressure pipelines and natural gas are not used, safety hazards are eliminated and the risk factor is reduced; compared with traditional heat transfer oil, The way of providing heat by resistance wire and heating tube increases the heating speed, improves the heat conversion efficiency, reduces the cost, increases the service life, improves the production efficiency, avoids the occurrence of safety accidents, and improves the safety factor; the graphene heater 12 can be directly fixed on the hot pressing plate 11 of the hot press 10, without the need to modify the original equipment and special technology; the graphene heater 12 can be manufactured in different specifications (such as 4×8 feet, 4×9 feet, 5×8 feet) according to needs, which is suitable for new equipment and old equipment modification; the graphene heater 12 used in the hot press 10 has been tested for 3000 hours continuously, and the equipment operates normally and has a long service life. The present invention provides a processing technology for a veneer artificial board, in which melamine impregnated film paper is attached to a particle board and a density board by heating and pressurizing, and the actual temperature of the graphene heater 12 can be controlled within ±1°C of the set temperature, and the maximum pressure it can withstand is 18MPA, and the temperature is 200-250°C.

[0057] The present invention provides a processing technology for veneer artificial boards, which uses a graphene material to generate heat through electricity to provide heat for the processing of the veneer artificial boards. The technology has high thermal utilization rate, low energy consumption, safety, energy saving and environmental protection, instantaneous power generation, and effectively improves production efficiency and production capacity. It also has a long service life and can fundamentally solve the current situation of high energy consumption, high safety risks and high pollution in the veneer artificial board production industry. The technology is suitable for industrial production and application.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0059] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A processing technology for veneer artificial board, the processing technology is: melamine impregnated film paper is pasted on the artificial board after being pressurized and heated, It is characterized in that The heating method adopts the method of heating the graphene material by applying electricity to provide heat, and the graphene material is a graphene crystal or a graphene filament bundle.

2. A processing technology for a veneer artificial board according to claim 1, It is characterized in that The graphene crystal is ≤3 microns and has a purity of ≥99%.

3. A processing technology for a veneer artificial board according to claim 1, It is characterized in that The graphene material is 100 to 300 g / m 2 set up.

4. A processing technology for a veneer artificial board according to claim 1, It is characterized in that The method of using graphene material to generate heat by electricity is specifically implemented by using a graphene heater (12), and the graphene heater (12) is arranged on a hot press (10); the graphene heater (12) comprises a combination part and a pressure-bearing part (7), the combination part is connected to the pressure-bearing part (7), and the combination part comprises a heat transfer layer (1), an insulating layer (2), a graphene heating layer (3), an insulating layer (2), a heat insulation layer (4), and a protective cover plate (5) in sequence; the pressure-bearing part (7) is arranged in the combination part, and the pressure-bearing part (7) is arranged between the edges of the heat transfer layer (1) and the protective cover plate (5) of the combination part, and the insulation layer (2), the graphene heating layer (3), and the heat insulation layer (4) are arranged inside the heat transfer layer (1), the protective cover plate (5), and the pressure-bearing part (7); the graphene heating layer (3) is connected to a wire, and the wire passes through the pressure-bearing part (7) to connect to a control system; the outer side surface of the pressure-bearing part (7) is flush with the outer side surfaces of the heat transfer layer (1) and the protective cover plate (5).

5. A processing technology for a veneer artificial board according to claim 4, It is characterized in that A pressure strip (6) is arranged between the heat transfer layer (1) and the insulating layer (2) on the combined part, the pressure strip (6) is connected to the pressure bearing part (7), and the surface of the pressure strip (6) is flush with the surface of the pressure bearing part (7).

6. A processing technology for a veneer artificial board according to claim 4, It is characterized in that A temperature measuring element is arranged on the graphene heating layer (3), and the temperature measuring element is connected to a control system via a wire.

7. A processing technology for a veneer artificial board according to claim 6, It is characterized in that An insulating layer (2) is provided between the pressure-bearing part (7) and the graphene heating layer (3); the wires connected to the graphene heating layer (3) and the wires connected to the temperature measuring element all pass through the insulating wire (2) and the pressure-bearing part (7) to connect to the control system.

8. The processing technology of the veneer artificial board according to claim 4, It is characterized in that The insulating layer (2) is made of insulating glue, the insulating glue resistance is 0.5MΩ / kV to 1MΩ / kV, high temperature resistance is above 300°C, and the weight is 100 to 300g / m 2 set up.

9. The processing technology of the veneer artificial board according to claim 4, It is characterized in that The heat transfer layer (1) is made of stainless steel, manganese steel or aluminum alloy, with a thickness of ≥3 mm; the pressure bearing strip (6) has a pressure bearing strength of ≥70 kg / cm 2 The high-hardness metal material has a thickness of ≥3mm and a pressure-bearing part (7) with a pressure-bearing strength of ≥70kg / cm 2 The heat insulating layer (4) is a high-hardness metal material with a width of ≥5 mm; the heat insulating layer (4) is a polymer material with a thermal conductivity of ≤0.2 (w / m·k) and a thickness of ≥3 mm; the protective cover plate (5) is made of stainless steel, manganese steel or aluminum alloy material and has a thickness of ≥1 mm; the protective cover plate (5) is made of stainless steel, manganese steel or aluminum alloy material and has a thickness of ≥1 mm.

10. The processing technology of the veneer artificial board according to claim 4, It is characterized in that The total thickness of the graphene heater (12) is ≤15 mm.

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