TWI325902B - - Google Patents

Description

13.25902 DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a nanocarbon crystal material and a method for producing the same using the same, and more particularly to a method for producing a planar heat generating body using the same. [Prior Art] Carbon fiber (carbon fiber) is a high-performance material with excellent properties such as electrical and thermal conductivity. In addition, its cost is gradually reduced, so the development and utilization in daily life has gradually expanded; At present, most of the carbon fiber electric heating plates produced have the following problems: 1. Due to improper selection of carbon fiber, the texture is soft, and there are more agglomerates in the pulp, which causes the surface of the composite product after pressing to be unevenly heated and dissipated, which is easily deformed or burnt. focus. 2. Due to the formation of a gap between the carbon fiber and the conductive tape, the contact is poor, and the arc is easily generated after the energization, so that the sheet covering the carbon fiber paper and the electrode overlap is scrapped. 3. Carbon fiber materials that work in a listening or humid environment can generate a large amount of 3⁄4 leakage current, which is life-threatening when used. The use of the description of the problem affects the large-scale promotion of carbon fiber hot plate in life [invention content] The main purpose of this month is to solve the problem of uneven heat dissipation on the surface of the existing broken fiber electric heating plate, poor contact between carbon fiber and conductive tape, electricity Insulation: As a short-lived ride, the money is supplied to the woman (four) and the crystal is similar to the pure electric heating -5 - 13.25902 board method. However, the carbon crystals are briefly described here; carbon is excellent in semiconductor materials under certain conditions. Theoretically, no matter how small particles are cut, each monomer should have positive and negative Electrodes, but in fact most carbon particles do not have these characteristics; when a special process (in high temperature, high pressure%, through ball milling, softening, purification, extraction and other processes) by modified carbon A class of materials that can extract pure macroscopic carbon crystals, while a large number of carbon crystals perform Brownian motion under the action of an electric field, which can rub each other, oscillate, and generate a large amount of heat, thereby achieving " Conversion of electric energy to thermal energy, the nano carbon crystal material of the present invention is composed of acrylonitrile-based carbon fibers and carbon nanofibers, which account for a total weight of 7 〇 to 8 〇%, and the total weight of carbon nanofibers. A carbon crystal having a total weight of 15 to 29%, wherein the acrylonitrile-based carbon fiber is 10 to 15 K and a diameter of 1 to 5/zm from a K number (a single fiber number per minute, κ table 1000). Lengths are 2~4_ and 4. 5 respectively 6mm of acrylonitrile-based carbon fiber is composed according to the weight ratio of 〇5~2: [the carbon fiber diameter is 50~200nm; the carbon crystal mesh number is 400~1〇〇〇. Then use The method for preparing the electric heating plate of the above nano carbon crystal material has the following steps: 1. Preparation of nano carbon crystal heating paper: a. According to the weight ratio of nano carbon crystal material to papermaking pulp: 1:9~19 The ratio of the nano carbon material is mixed into the pulp for papermaking, and then added to the aqueous solution of the dispersant to form a carbon fiber mixed pulp. The amount of the dispersant is 重量.5~ of the weight of the nanocracker crystal material. 5% ; -6- b. Mix the carbon fiber _ into the water-soluble _ homogenizer, and install the net speed enthalpy (paddle degree) at a speed of 800~2000 rpm at 35. ~55 °SR In the hour, the pulp is c. The pulp is treated with the carbon fiber mixed pulp, and the paper machine with the net is used to control the paper speed to be hot-dryed on the / 0 mesh paper; 15 - the upper cloth is squeezed again Preparation of glass fiber cloth dipped film: apply the mixed paint to 2 (10) On the surface of the glass fiber cloth of the warp and weft, the mixed coating is a secret resin, epoxy resin and propylene compound in a weight ratio of 5:4 to 8:1, and a glass fiber cloth dipped to a thickness of 〇·1~0.3 mm is obtained. Film; Third, the preparation of nano carbon crystal electric heating plate: d. Firstly lay six layers of 50 grams thick kraft paper on the iron plate, then lay a flat iron plate with a thickness of 1~3mm, then apply it on the iron plate. Molding agent; e. Laying a layer of 耐.〇1~0〇5_ thick high-pressure polyethylene film on the iron plate, and then laying decorative paper on the high-pressure resistant polyethylene film; f. laying three to five layers on the decorative paper The fiber cloth is immersed in the film, and then the nano-spore crystal paper is laid, and then a copper skin wrapped with tin foil paper is placed on both sides as a conductive electrode; the width of the copper skin is 1 〇 15 15 、 and the thickness is 〇 6 mm, and then used The knurling machine is embossed on both sides of the stencil; g. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 High pressure polyethylene film, apply mold release agent, and then cover 1~3ππη thick flat iron plate on high pressure resistant polyethylene film Six layers of 50 g thick kraft paper are laid on the iron plate; i. The flat copper mesh braided wire is firmly welded to the copper electrode, and the jade negative conductive electrode is taken out from the back of the glass fiber cloth dipping film in parallel; the milk 902 j. is placed in the heat On the press, preheat up to 8 (Tc, turn on the hot press, pressurize to 2 tons, and raise the temperature to lOOt: when the temperature is kept for 8 to 9 minutes, then raise to 120 C, constant temperature constant Press for 8~9 minutes, then heat up to 14 °C, hold the pressure for 8 9 minutes, then keep the pressure down to 55 C' and then decompress. After cooling to room temperature, open the mold to obtain nano carbon crystal heating plate. In addition, the dispersing agent is a combination of sodium alginate, sulfhydryl cellulose, polyacrylamide or a combination of several; the papermaking pulp is wood pulp cellulose pulp; the fascinating point mixture is polyaniline , polyethylene glycol in water-soluble acid resin

One or a combination of several; the release agent is a polyurethane release agent. However, carbon crystals do lattice vibration heating, and the propylene-based carbon fiber raw materials with different aspect ratios form a connecting lattice connecting the lattice, adding nano carbon fiber, one::: electric dissipation and spark generation, while ensuring Contacting each other or only dividing the three-dimensional crisscross network of points, lines and planes, the carriers move along this difference and in the direction of low potential, microscopically,,,,,,,,,,,,,, Order, # form a uniform surface heating surface; This ^ rabbit rabbit crystal material electric hot plate know

The entire plate is dimpled, and it:: The electric fabric prepared by the object material is double..., has a two-dimensional network of body, and has no surface ===The surface heating surface formed by cutting carbon fiber can produce 8

= Infrared 'long-term ❹ can play a role in health and health ~ I full, good insulation performance, breakdown of electricity problems also have a strong 20,000 hours without breaking, not falling off life, long - continuous bath, clothing area and office _ Cai's (four) Xiao took the family to ^ ^ ^ to, conference rooms, hotels and so on. Furthermore, the electric 制备 prepared by the invention has the advantages of uniform heat generation performance, and the advantages of fast heating, excellent electrical insulation performance and long working life are suitable for large-scale production to meet the needs of production and life, and are prepared. The method is simple and easy to operate. [Embodiment] Embodiment 1 of the present invention: a nano carbon crystal material is composed of 70 to 80% of acrylonitrile-based carbon fiber, a total weight of 1 to 5% of nano carbon fiber and a total weight of 15~ The acrylonitrile-based carbon fiber is a acrylonitrile having a K number of 10 to 15 K, a diameter of 1 to 5/im, a length of 2 to 4 mm, and a thickness of 4 to 4 mm, respectively. The carbon fiber is composed of a weight ratio of 〇·5 to 2:1; the nano carbon fiber has a diameter of 50 to 2 〇〇 nm; and the carbon crystal has a mesh number of 400 to 1000 mesh. The treatment method is achieved by the following reaction: 1. Mixing acrylonitrile-based carbon fiber with a total weight of 70 to 80%, nano carbon fiber having a total weight of 1 to, and carbon crystals having a total weight of 15 to 29%. 2. Add the mixture to a clean container containing a concentration of 1〇~3〇% acetone solution, and then stir at 300~600rpm, soaking and softening for 1 hour; 3. Ultrasonic solution of the stirred solution Shock cleaning 〇 5~2 hours (the purpose of ultrasonic vibration is to remove impurities and make the surface clean without glue); 4. Heat the solution after washing to a complete evaporation of acetone to obtain nano carbon crystal material. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 2: Different from the specific embodiment, the carbon β-steroid material is composed of 72 to 78% of acrylonitrile-based carbon fiber, and the total weight is 2 to 4% of nano carbon fiber and total It is composed of 18 to 25% carbon crystals; the others are the same as in the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 3: Unlike the specific embodiment, the nano carbon crystal material is composed of 75% of the total weight of propionitrile-based carbon fiber, which accounts for the total importance of the nanometer.

-9- 1325902 Carbon fiber and carbon crystals with a total weight of 20%; the other is the same as the specific method 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 4: Different from the first embodiment, the acrylonitrile-based carbon fiber has a diameter of 2 to 4 "m; and the others are the same as in the first embodiment. BEST MODE FOR CARRYING OUT THE INVENTION V: Different from the first embodiment, the acrylonitrile-based carbon fiber has a diameter of 3/zm; otherwise the same as in the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 6: The nano carbon fiber has a diameter of 80 to 150 nm, which is the same as that of the first embodiment. BEST MODE FOR CARRYING OUT THE INVENTION Seventh: Unlike the specific embodiment 1, the carbon fiber diameter is l〇〇nm; the other is the same as the first embodiment. BEST MODE FOR CARRYING OUT THE INVENTION Eighth: Different from the first embodiment, the number of carbon crystals is 600 to 900 mesh; the others are the same as those of the first embodiment. BEST MODE FOR CARRYING OUT THE INVENTION Nine: Different from the first embodiment, the number of carbon crystals is 800 mesh; the others are the same as those of the first embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 10: A method for preparing a hot plate using a nanocarbon crystal material composed of a specific embodiment is as follows: 1. Preparation of nano carbon crystal heating paper: a. The ratio of the weight ratio of the crystalline material to the papermaking pulp is 1:9 to 19, the nano carbon crystal material is incorporated into the paper pulp, and then added to the aqueous solution of the dispersing agent to form a carbon fiber mixed pulp, the dispersing agent thereof. The amount of use is 0.5 to 5% by weight of the nanocarbon crystal material; the dispersing agent is one or a combination of sodium alginate, methyl cellulose, polyacrylamide; the paper pulp is wood pulp Cellulose pulp; b. The carbon fiber mixed pulp is added to a high-speed homogenizer containing a water-soluble binder solution, and beaten at a speed of 800 to 20 rpm for 1 to 2 hours to make the slurry phase -10- 1325902 Between 35° and 55°SR; the water-soluble binder is one or more of polyaniline, polyethylene glycol, and water-soluble varnish resin; c·mixing the carbon fiber after beating treatment, using a paper machine with a 5-inch papermaking net, The speed of the papermaking is 1〇~15m/min, the upper felt is squeezed and then hot-baked, dried and formed, and the paper is cut. The cutting device is used together with the modulus detecting device to select carbon in the large-volume nano carbon crystal heating paper. The base paper with the crystal content conforming to the product requirements, and cut into the desired shape according to the production requirements of the product; 2. Preparation of the glass fiber cloth dipping film: the mixed paint is applied on the glass fiber cloth surface above 25xi6 and above, mixed The coating material is a mixture of phenolic resin, epoxy resin and acetone in a weight ratio of 1 to 5:4 to 8:1 to obtain a glass fiber cloth dipped film having a thickness of 0.1 to 0.3 mm; the phenolic resin is a phenolic resin 1411, epoxy The resin is epoxy resin E44; Third, the production of nano carbon crystal electric heating plate: d. Firstly lay six layers of 50 grams thick kraft paper on the iron plate, and then lay a flat iron plate with a thickness of 1~3mm, then Applying a release agent to the iron plate; the release agent is a polyurethane release agent; e. laying on the iron plate - layer G. 01~G. 〇 5mm thick high pressure resistant polyethylene film, and then in high pressure resistant polymerization Decorative paper on the vinyl film; f. Laying three on the decorative paper Five fiber cloth impregnated film, and then laying nano carbon crystal paper element, and respectively placed on both sides - (iv) with the block for guiding the paper wrapped copper electrode; a width of the copper 〇~ i! 5 coffee, thick for 〇. 6 _, and then use a knurling machine to press the netting on both sides (the purpose of embossing is to make the tin, steel and carbon crystal paper fully contact); g. in the nano Laying three to five layers of fiber cloth on the carbon crystal paper, immersing the sheet h. laying on the fiber cloth dipping film - layer 〇〇 1 ~ 〇〇 5 Å thick on the high pressure -11 - poly, film 'smearing release agent, The release agent is a poly-alkaline shouting _, and then: on two press-pull 乙 ― ― 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚 厚Solder firmly with the copper electrode, as a positive and negative conductive electrode parallel from the back of the glass fiber cloth dipping film; j. placed on a hot press, up to 8 (rc, turn on the hot press to 2 ton, and raise the temperature At 100t, hold the pressure for 8~9 minutes and then heat up to 12〇m for 8~9 minutes. Then heat up to 14 (rc, hold the pressure for 8~9 minutes, weave the pressure to 55〇c, then The pressure is reduced, and the temperature is lowered to room temperature to open the mold to obtain a nano carbon crystal electric heating plate. 2 The heat medium of the present embodiment has a Basis weight of 30 to 7 g/m 2 and a thickness of 6 G to 8 G//. Ra; the upper and lower layers of kraft paper act as a buffer for decompression; when the dispersant is a mixture, the various dispersions can be combined in any ratio; the water-soluble dry mixture is mixed _, each water-soluble _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The resin is a curing agent, the epoxy resin is a secondary, and the acetone solution is diluted. The effect of the embodiment is verified by the following test: The test is carried out in a temperature-controlled closed chamber with international standards, the chamber has no internal and external heat sources, and is approximately insulated. The net size of the small room is: ground (3 thin 2 heart X (3. 93±(). 2m) 'height 2· 8±Q. 2m, 16 pieces of nano carbon crystal electric heating plate are laid on the small chamber (10) surface. All nano carbon crystals are connected in series. Detection conditions. Nano carbon crystal electric heating plate is directly laid horizontally in the standard chamber, and the edge of the electric heating plate is 〇.3m away from the wall surface. The detection equipment: temperature measuring thermoelectricity Even, seam gauge, Wen Lai Lai table, voltmeter,

S -12- 13.25902 Ammeter, anemometer, humidity measuring instrument, electricity meter, etc. 5°C。 Room temperature is set at a temperature of 12. 5 ° C, the temperature is set to be a hot plate, and the temperature is not too high. When the nano carbon crystal electric heating plate is energized and continuously measured by temperature, the test results can be seen from the table - (temperature of each measuring point of the heating plate when heating), and the test results of the second measuring point (the temperature of each measuring point of the heating plate after stabilization), whether in the table - The heating process is also the stable process of Table 2. The temperature of each surface of the hot plate is measured. (4) Temperature and temperature field 'The average time is 5~2.5 °C for each job time and each test point. Take small / dish difference in Table 1.s;

-13- 13.25902 Table 2 measuring point temperature time (hours 1 point 2:3:4:5:6:7:8 1 41.28 42.37 39.98 39. 74 42. 13 42.29 41.29 39. 66 2 41.69 42. 10 40. 06 39. 89 42. 07 42. 19 41.37 39. 88 3 42. 22 42. 02 39.88 39. 90 42. 08 42. 10 41.35 39. 70 4 42. 28 42. 27 39. 78 39. 94 42. 23 42. 19 41.39 39. 76 5 42. 19 42. 19 40. 06 39. 89 42. 17 42. 29 41.27 39. 58 6 42. 02 42. 01 39. 78 39. 80 42. 08 42 20 41. 15 39. 60 The second figure shows the average surface temperature of 16 hot plates after changing the temperature of the nano-carbon crystal electric heating plate in the standard chamber at room temperature of 12.5 ° C; After that, the average temperature of the surface of the board rises rapidly. After only 4.4 minutes, the average temperature of the 16 boards reaches the suitable temperature of the building floor heating of 36 ° C. The third figure shows the change of the standard indoor air temperature with time after power-on; The carbon-carbon crystal electric heating plate can quickly diffuse heat to the air, and the indoor temperature rises rapidly. When it rises to the indoor heating standard temperature of 18 ° C, it takes only 23.2 minutes.

The fourth graph shows the average calorific value of the surface of the 16 plates as a function of time after energization, indicating that the calorific value of the hot plate rises rapidly after being energized. After 4.3 minutes, the calorific value reaches the maximum and then remains stable. BEST MODE FOR CARRYING OUT THE INVENTION Eleven: Different from Embodiment 10, the weight ratio of the nanocarbon crystal material to the papermaking pulp is 1: 12 to 17; the others are the same as those of Embodiment 10. BEST MODE FOR CARRYING OUT THE INVENTION Twelve: Different from Embodiment 10, the weight ratio of the nanocarbon crystal material to the papermaking pulp is 1:15; the others are the same as those of the specific embodiment 10.

-14- 13.25902 BEST MODE FOR CARRYING OUT THE INVENTION Thirteen: Different from the specific embodiment, the weight ratio of the phenol resin, the epoxy resin and the acetone is 3:6:1; the others are the same as the specific embodiment 10. To sum up, the technical means disclosed in the present invention have the invention patents such as "novelty", "progressiveness" and "available for industrial use", and pray for the patent to be invented by the bureau. German sense. The drawings and the descriptions of the present invention are merely preferred embodiments of the present invention. Those skilled in the art and the modifications or equivalent changes made in accordance with the spirit of the present invention should still include the scope of the patent application. 1125902 [Simple description of the drawing] The first figure is a schematic diagram of the arrangement of the temperature measuring points in the tenth embodiment. The second graph is a graph of indoor air temperature as a function of time. The third graph is a graph of the average surface temperature of the carbon crystal electric heating plate as a function of time. The fourth figure is a graph of the heat generation of the surface of the carbon crystal electric heating plate with time. [Main component symbol description]

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Claims (1)

1325902 C. Mixing the carbon fiber mixed pulp after beating treatment, using a paper machine with a 5 mesh paper net to control the speed of the papermaking at 1Q~15m/min, and extruding the upper felt and drying it on the hot drying cylinder; 2. Glass fiber Preparation of cloth (four) sheet: Apply the mixed coating on the surface of the glass fiber cloth above 25xl6, and mix the paint with the weight ratio of 5:4~8:1, and the oxygen resin and (10) Mixture, obtain a glass fiber cloth dipped knee piece with a thickness of 0.1~0.3mm; 3. Preparation of nano carbon crystal electric heating plate: d. Firstly lay six layers of 5Q gram thick kraft paper on the iron plate, and then lay the thickness of 1 ~3_ flat iron plate, then apply mold release agent on iron plate; .lay on iron plate; f G.G1~〇.〇5_ thick high pressure polyethylene film, then high pressure polyethylene film Upper paving paper; f, Lai three to five layers of fiber dipped film on decorative paper, set nano carbon crystal paper, _ placed on both sides - turn (four) paper bag (four) copper skin as conductive electrode; g' in Nai Laying three to five layers of fiber cloth dipped film on rice carbon crystal paper; h. on fiber cloth dipping film Set the layer 〇〇1~〇〇5_ thick high pressure resistant film' to apply the release agent, then lay the cover on the high pressure resistant polyethylene film, and then spread the six layers of 50 grams thick on the iron plate. Kraft paper; Lei will be flat copper mesh braided wire and steel electrode welded firmly, as a positive and negative conductive electrode parallel from the back of the glass fiber cloth dipped film; 200 ^ placed on, M machine 'preheated up to 8 "C, open Hot house machine, pressurize to sneer, and raise the temperature to the time of Qi, (4) hold pressure for 8 to 9 minutes, iron after rise > dish to 120 ° C, constant temperature and constant pressure 8 to 9 minutes |, 8 to 9 minutes , then protect; 1 cool down to 5 14GC, hold the temperature value C, then decompress, cool down to room temperature and then open S • 18 - 1325902 mold 'to get nano carbon crystal dance board 5. Such as "special · #第A method for preparing a hot plate by using the nanocarbon crystal material described in the above, wherein #分(四) is one of sea bream, methyl cellulose, polyacrylamide or a plurality of spines σ 6 · as applied for a patent The method for preparing a hot plate of the nano carbon material according to the fourth item, wherein the paper pulp is wood pulp cellulose pulp. The method for preparing a hot plate of the nano carbon material according to the fourth aspect of the patent, wherein the water-soluble binder is a polyaniline, a polyvinyl alcohol, a water-soluble phenolic resin, or a plurality of 8. A method for preparing a hot plate according to the nanocarbon crystal material described in claim 4, wherein the phenolic resin is a phenolic resin 1411 and the epoxy resin is an epoxy resin Ε44. 9 - The method for preparing a hot plate according to the nano carbon crystal material described in claim 4, wherein the copper skin has a width of 1 〇 15 15 、 and a thickness of 〇Μ. After being pressed on both sides by a knurling machine. Netting. The method for preparing a hot plate for a nano-carbon crystal material according to the fourth aspect of the invention, wherein the release agent is a polyurethane release agent. :· S ; -19-