WO2006115102A1 - 断熱材用コーティング層、断熱材用積層体、断熱材用コーティング剤、並びに、断熱材用コーティング剤の製造方法 - Google Patents
断熱材用コーティング層、断熱材用積層体、断熱材用コーティング剤、並びに、断熱材用コーティング剤の製造方法 Download PDFInfo
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- WO2006115102A1 WO2006115102A1 PCT/JP2006/308066 JP2006308066W WO2006115102A1 WO 2006115102 A1 WO2006115102 A1 WO 2006115102A1 JP 2006308066 W JP2006308066 W JP 2006308066W WO 2006115102 A1 WO2006115102 A1 WO 2006115102A1
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- Prior art keywords
- heat insulating
- insulating material
- coating layer
- carbonized
- graphite powder
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/30—Self-sustaining carbon mass or layer with impregnant or other layer
Definitions
- Insulation coating layer insulation laminate, insulation coating, and method for producing insulation coating
- the present invention relates to a coating layer for a heat insulating material, a laminate for a heat insulating material, a coating agent for a heat insulating material, and a method for producing a coating agent for a heat insulating material.
- Carbon fiber-based molded heat insulating material (laminated body for heat insulating material) formed from carbon fiber is a vacuum furnace used for heat treatment of metals, sintering of fine ceramics, pulling of various crystals, etc. Widely used as furnace insulation.
- a method for producing such a laminate for a heat insulating material carbon fiber felt or the like has been conventionally used to improve heat insulating properties, prevent scattering of carbon fiber powder, prevent permeation of gas generated from sintered metal, and the like.
- a method of attaching a graphite sheet, a surface coating material such as carbon fiber cloth, etc. was employed.
- JP-A-3-163174 Document 2
- a heat insulating coating agent containing at least a binder, a scaly graphite powder having a particle size of 0.1 to 500; ⁇ ⁇ , and a solvent Is disclosed.
- JP-A-3-228886 Document 3
- a coating agent is disclosed in which a fibrous material is added in an amount of 20 parts by mass or less per 100 parts by mass of black lead powder.
- the coating agents described in Reference 2 and Reference 3 are not sufficient in workability, and are sufficient in surface smoothness and surface gloss on the coating surface of the coating layer for heat insulating material obtained after firing. Then I helped.
- the coating layer for the heat insulating material obtained after firing using such a coating agent there is a problem that the coating layer for the heat insulating material is peeled off, and the dust prevention property of the coating layer for the heat insulating material, There was also a problem of low oxidation resistance and mechanical strength.
- the coating agents described in Document 2 and Document 3 have problems in terms of safety and hygiene in the work environment because the solvent of the coating agent is an organic liquid.
- the present invention has been made in view of the above-described problems of the prior art, and has a smooth and dense surface, excellent surface smoothness and surface glossiness, and sufficiently low gas permeability, Thermal insulation coating layer capable of imparting excellent dust prevention, oxidation resistance, mechanical strength and heat insulation effect to the laminate for thermal insulation, and the thermal insulation stack provided therewith It is an object of the present invention to provide a layered body, a coating agent for a heat insulating material for obtaining the layered body, and a method for producing the coating agent for the heat insulating material.
- the inventors of the present invention obtained a specific carbonized material, scaly graphite, a sticking agent, and an aqueous liquid agent in a coating agent for a heat insulating material. Workability of the resulting insulation coating agent is improved, and the coating layer for insulation obtained by applying the coating agent for insulation and carbonizing it has excellent surface smoothness and surface gloss. It is possible to provide a sufficiently low gas permeability, and the strength is excellent in the anti-dusting, oxidation resistance, mechanical strength and thermal insulation effect of the thermal insulation laminate in which the insulation coating layer is laminated. The present invention has been completed.
- the coating layer for a heat insulating material according to the present invention includes the carbonized molded body, and the heat insulating material in the laminated body for a heat insulating material provided with a coating layer for a heat insulating material laminated on at least one surface of the carbonized molded body.
- the carbonized molded body has a bulk density of 0.08 to 0.8 gZcm 3 .
- the gas permeability of the insulating material coating layer is 8.0 NL / hr-cm 2 -mmH 2 O or less.
- the thickness of the coating layer for a heat insulating material is 50 ⁇ m to 3 mm.
- FIG. 1 is a schematic longitudinal sectional view of a gas permeability measuring apparatus used for measuring such a gas permeability.
- the gas permeability measuring device shown in FIG. 1 has an upper cup 1 having a cylindrical recess with an inner diameter of 19 mm and a height of 50 mm at the center of the lower surface, and an inner diameter of 19 mm and a height at the center of the upper surface.
- a lower cup 2 provided with a cylindrical recess of 50 mm.
- the upper cup 1 and the lower cup 2 are disposed so that the lower surface of the upper cup 1 and the upper surface of the lower cup 2 face each other so that the central axes of the surfaces are on the same line.
- the lower force tip 2 is fixed in such a gas permeability measuring apparatus.
- the upper cylinder 1 is provided with an air cylinder 3. Powerful air cylinder 3 allows upper cup It is possible to move 1 up and down and to adjust the surface pressure between the cups.
- an air introduction pipe 4 is connected to the lower cup 2, and a flow meter 5 is installed in such an air introduction pipe 4.
- a differential pressure measuring device 6 is connected to the lower cup 2.
- a chloroprene rubber 7 having a hardness of 30 to 40 is attached to the lower surface of the upper cup 1 and the upper surface of the lower cup 2.
- a purge hole 8 is provided in the upper part of the upper cup 1. Further, in the gas permeability measuring apparatus shown in FIG.
- Sample 9 is a heat insulating material in which a coating layer 9a for heat insulating material is laminated on the surface of a carbonized molded body 9b (length 100 mm, width 100 mm, thickness 6 mm) having a bulk density of 0.08-0.8 gZcm 3 .
- a flow meter 5 a flow type flow meter capable of adjusting 100 to 1000 NLZhr is used.
- the differential pressure measuring instrument 6 the product name "Digital" manufactured by YOKOGAWA HOKUSHIN, which can measure in the measuring range 0 to 200mMHO.
- the upper cup 1 and the lower cup 2 are closed, and air is vented from the air introduction pipe 4.
- the flow rate of air is adjusted to 600 NLZhr by the flow meter 5.
- zero correction of the differential pressure measuring device 6 is performed.
- the average value ⁇ of the obtained differential pressure is introduced to obtain the gas permeability.
- the carbonized molded body 9b of the sample 9 is a porous body and hardly affects the pressure when the air flow rate is 600 NLZhr. Therefore, the gas permeability measured using the sample 9 is The gas permeability of the insulation layer for the heat insulating material is used.
- the coating layer force for the heat insulating material is applied to the entire surface of the carbonized molded body having a width of 40 mm, a length of 40 mm, and a thickness of 40 mm. Reduce the amount of particles with a particle size of 0.3 m or more generated when an inert gas is blown onto the laminate for a heat insulating material having a coating layer at a flow rate of 500 mLZ for 340 seconds to 300 or less. It is preferred to be a thing.
- a sample preparation method will be described.
- a carbonized molded body having a bulk density of 0.08 to 0.8 gZcm 3 was measured using a diamond cutter in a size of 40 mm in width, 40 mm in length, and 40 mm in thickness. cut.
- this on the entire surface of the carbonized-molded body for a thermal insulator coating agent was applied at a rate of LkgZm 2 with a brush, no pressure to cure the ⁇ while dried 3 hours at a temperature of 0.99 ° C
- a vacuum furnace it was graphite-treated for 1 hour at a temperature of 2 000 ° C and used as a sample.
- the center of the opening surface and the center of the coating layer for the heat insulating material are made parallel to the opening surface at the tip of the gas distribution pipe having an inner diameter of 3.5 mm for introducing argon gas and the coating layer surface for the heat insulating material of the sample. And the center of the coating layer surface for the insulation of the sample and the center of the opening surface are 10 mm apart, so that Place the sample.
- argon gas of ultra high purity purity 99. 99%
- the amount of argon gas introduced is reduced to 5 LZ, and the gas suction pump built in the particle counter is activated. Then, the argon gas introduced into the three-necked buffer tank is sucked into the particle counter.
- the number of particles with a particle size of 0.3 m or more sucked by such suction is measured with a particle counter.
- the number of particles having a particle size of 0.3 m or more measured in this way is defined as the dust generation amount.
- the coating layer for a heat insulating material of the present invention is coated on the entire surface of the carbonized molded body having a width of 100 mm, a length of 100 mm, and a thickness of 40 mm. It is preferable that the mass reduction rate in an acid resistance test in which the laminate for a heat insulating material provided with a layer is maintained in air at a temperature of 600 ° C. for 5 hours is 10.0% or less. Better!/,.
- the heat insulating material coating layer has a layer strength of 100 mm in width, 100 mm in length, and 40 mm in thickness on the entire surface of the carbonized molded body.
- the mass reduction rate shall be not more than 10.0% in an acid resistance test in which the thermal insulation laminate including a coating layer is maintained in air at 600 ° C for 10 hours. Is more preferred.
- a sample preparation method will be described.
- a carbonized molded body having a bulk density of 0.08 to 0.8 gZcm 3 is cut into a size of 100 mm in width, 100 mm in length, and 4 Omm in thickness using a diamond cutter.
- this on the entire surface of the carbonized-molded body for a thermal insulator coating agent was applied at a rate of LkgZm 2 with a brush, no pressure to cure the ⁇ while dried 3 hours at a temperature of 0.99 ° C
- a vacuum furnace it was graphite-treated for 1 hour at a temperature of 2 000 ° C and used as a sample.
- the quartz case containing the sample is placed in a pine furnace (Denken Co., Ltd., KDF P-90G), and the quartz case is purged with nitrogen, and then heated to 600 ° C. After stabilizing the temperature force at 600 ° C, inject 2LZ of air and hold for 5 hours. After that, the atmosphere inside the quartz case is again replaced with nitrogen, and then naturally cooled to 150 ° C. After cooling to 150 ° C. in this way, the quartz case is taken out of the electric furnace and further placed in a desiccator to cool to room temperature.
- the mass of the sample is measured to the order of 0.1 mg with an electronic balance, and the mass reduction rate due to oxidation at 600 ° C for 5 hours is based on the mass before the acid resistance test. Ask for.
- the value of the mass reduction rate obtained in this way is defined as 5 hours of acid resistance.
- the coating layer for a heat insulating material is 20 mm in width, 100 mm in length, 10 mm in thickness of the carbonized molded body having a width of 20 mm and a length of 100 mm.
- the maximum breaking load force in the bending strength test in which a central concentrated load was applied under the conditions of a fulcrum span of 80 mm and a crosshead speed of 1. OmmZ was obtained using the insulation laminate having the insulation coating layer on both surfaces. It is preferable that the bending strength is 1. OMPa or more.
- a sample preparation method will be described.
- a carbon steel mold with a bulk density of SO. 08 to 0.8 g / cm 3 is made into a diamond having a width of 120 mm, a length of 120 mm, and a thickness of 1 Omm. Cut out with a cutter.
- 120mm wide and 120mm long Apply a coating agent for thermal insulation on both the upper and lower surfaces with a brush at a rate of lkgZcm 2 , then cure the resin while drying for 3 hours under a temperature of 150 ° C with no pressure applied in a vacuum furnace.
- the graphite was treated for 1 hour at 2000 ° C.
- the sample was cut with a diamond cutter into a size of 20 mm wide and 100 mm long while maintaining the thickness after graphitization.
- the maximum breaking load force bending strength is obtained by performing a bending test with a central concentrated load under the conditions of a plastic fulcrum and a punch with a radius of 5mm for OmmZ.
- the coating layer for a heat insulating material of the present invention the coating layer force for a heat insulating material is used.
- a content of the scaly graphite powder is 10 to 200 parts by mass and a content of the adhesive is 2 with respect to 100 parts by mass of the carbonized material. It is preferable that the content of -50 parts by mass and the aqueous liquid agent is 50-600 parts by mass
- the adhesive is methylcellulose, ethinoresenorelose, methinorethynoresenorelose, hydroxyethinoremethinoresenore mouth, hydroxy Methyl cellulose, hydroxypropyl methyl cellulose, polyacrylamide, polyvinyl alcohol, and starch strength are particularly preferred to be at least one selected from methyl cellulose! /.
- the carbonized material is preferably furan resin.
- an average particle diameter of the scaly graphite powder is in a range of 50 to 500 m.
- the scaly graphite powder has a first scaly graphite powder having an average particle diameter in the range of 50 to 500 ⁇ m and an average particle diameter of 1 ⁇ m. m or more 5
- a second scaly graphite powder in a range of less than 0 m, and a mixing ratio in terms of mass of the first scaly graphite powder and the second scaly graphite powder is preferably in the range of 4: 6 to 8: 2.
- the laminate for a heat insulating material of the present invention includes a carbonized molded body having a bulk density of 0.08 to 0.8 gZcm 3 and the carbonized molded body of the present invention laminated on at least one surface of the carbonized molded body. And a coating layer for a heat insulating material.
- the coating agent for a heat insulating material of the present invention comprises:
- the content of the scaly graphite powder is 10 to 200 parts by mass and the content of the adhesive is 2 to 5 with respect to 100 parts by mass of the carbonized material.
- the content of 0 part by mass and the aqueous liquid agent is preferably 50 to 600 parts by mass.
- the adhesive may be methylcellulose, ethinoresenorelose, methinorethynorenorose, hydroxyethinoremethinoresenore mouth, hydroxy Methyl cellulose, hydroxypropyl methyl cellulose, polyacrylamide, polyvinyl alcohol, and starch strength are particularly preferred to be at least one selected from methyl cellulose! /.
- the carbonized material is preferably furan resin.
- an average particle diameter of the scaly graphite powder is in a range of 50 to 500 m.
- the scaly graphite powder has a first scaly graphite powder having an average particle size in the range of 50 to 500 ⁇ m and an average particle size of 1 ⁇ m.
- first scaly graphite powder Second scaly graphite powder
- Second scaly graphite powder a mixing ratio in terms of mass of the first scaly graphite powder and the second scaly graphite powder
- the method for producing a coating agent for a heat insulating material includes a step of dispersing a scaly graphite powder in water to obtain a first dispersion, and a method in which an adhesive is dispersed in an organic solvent compatible with water.
- a step of dispersing a carbonized material that can be 40% or more to obtain a coating agent for a heat insulating material.
- the coating agent for heat insulating material of the present invention has a smooth and dense surface, excellent surface smoothness and surface glossiness, and sufficiently low gas permeability.
- a coating layer for heat insulating material capable of imparting excellent dusting prevention property, oxidation resistance, mechanical strength and heat insulating effect to the laminate is not necessarily known, but the present inventors are as follows. I guess as follows. That is, in the present invention, it is possible to sufficiently suppress the fluidity of the aqueous liquid agent by the action of the specific adhesive agent contained in the insulating agent coating agent.
- the adhesive agent fills the gaps between the particles of the scaly graphite powder together with other components, and the carbonized molded article It adheres to the surface composition.
- the adhesive between the particles of the scaly graphite powder is fixed while filling with the adhesive, cracks are sufficiently prevented from occurring in the coating layer for the heat insulating material after carbonization, and the surface smoothness is improved. Surface glossiness is imparted, and almost no peeling of the coated surface is observed.
- the coating layer for heat insulating material after carbonization has excellent surface smoothness and surface glossiness, it becomes possible to exert a sufficient heat insulating effect due to its high heat reflection efficiency.
- a smooth and dense coating layer for heat insulating material on the carbonized molded body it is possible to obtain a heat insulating material laminated body having excellent dust generation prevention, oxidation resistance, mechanical strength and heat insulating effect. I guess it will be possible.
- the working environment during the coating operation using an aqueous liquid agent is used. It is assumed that it will be possible to improve safety and hygiene.
- the surface is smooth and dense, excellent in surface smoothness and surface glossiness, and sufficiently low in gas permeability.
- Coating layer for heat insulating material capable of imparting dust prevention, oxidation resistance, mechanical strength and heat insulating effect, laminate for heat insulating material having the same, coating agent for heat insulating material for obtaining the same,
- FIG. 1 is a schematic longitudinal sectional view of a gas permeability measuring device used for measuring gas permeability.
- the coating layer for a heat insulating material of the present invention is for the heat insulating material in the heat insulating material laminate including a carbonized molded body and a coating layer for the heat insulating material laminated on at least one surface of the carbonized molded body.
- the carbonized molded body has a bulk density of 0.08 to 0.8 gZcm 3 .
- the gas permeability of the insulating material coating layer is 8.0 NL / hr-cm 2 -mmH 2 O or less.
- the gas permeability of the coating layer for a heat insulating material of the present invention is 8.0 NL / hr-cm 2 -mmH 2 O.
- the coating layer for heat insulating material of the present invention When the transmittance exceeds 8.0 NL / hr-cm 2 -mmH 2 O, the coating layer for heat insulating material of the present invention
- the thickness of the coating layer for a heat insulating material of the present invention is preferably 50 ⁇ m to 3 mm, preferably 100 m to: Lmm, more preferably 150 / ⁇ ⁇ to 500 / Force to be ⁇ m Is preferred.
- the thickness of the coating layer for heat insulating material is less than 50 m, sufficient acid resistance and mechanical strength are provided for the laminated body for heat insulating material on which the coating layer for heat insulating material of the present invention is laminated. It tends to be difficult to give.
- the thickness of the coating layer for the heat insulating material exceeds 3 mm, the rate of increase in the acid resistance effect is not so large that it becomes uneconomical and cracks are caused by expansion and contraction due to heat. Or surface smoothness and surface gloss tend to be reduced.
- the heat insulating material coating layer is provided on the entire surface of the carbonized molded body having a width of 40 mm, a length of 40 mm, and a thickness of 40 mm. Less than 300 particles (more preferably less than 250 particles) of particles with a particle size of 0.3 m or more that are generated when an inert gas is blown on the heat insulation laminate for 340 seconds at a flow rate of 500 mLZ. A coating layer for a heat insulating material is preferred.
- the object to be treated containing a metal or an inorganic compound in the heating furnace covered with the heat insulating material laminate in which the heat insulating material coating layer of the present invention is laminated.
- the material to be treated tends to be contaminated by particles (dust) having a particle size of 0.3 ⁇ m or more released into the heating furnace.
- the method for measuring such a dust generation amount is as described above.
- the coating layer for a heat insulating material is formed on the entire surface of the carbonized molded body having a width of 100 mm, a length of 100 mm, and a thickness of 40 mm.
- the mass reduction rate in an acid resistance test in which the laminate for heat insulating material provided is maintained in air at 600 ° C for 5 hours is 10.0% or less (more preferably 7.0% or less).
- a thermal insulation coating layer is preferred.
- the coating layer for a heat insulating material according to the present invention has a coating layer strength of 100 mm, a length of 100 mm, and a thickness of 40 mm. Acid heat resistance test in which the laminate for a heat insulating material provided with the coating layer for a heat insulating material on the entire surface of the carbonized molded body is kept in air at a temperature of 600 ° C for 10 hours. It is further preferable that the mass reduction rate at 1 is 10% or less (particularly preferably 7.0% or less).
- both the upper and lower surfaces of the carbonized molded body having a width of 20 mm, a length of 100 mm, and a thickness of 10 mm are 20 mm wide and 100 mm long.
- Bending strength with central concentrated load under the condition of OmmZ Maximum breaking load in the test It is preferable to use a coating layer for a heat insulating material having a bending strength determined from 1. OMPa or more (more preferably 1.5 MPa or more). If the bending strength obtained from such maximum breaking load is less than 1. OMPa, handling properties during transportation and installation in a heating furnace tend to be reduced from the viewpoint of shape retention. The method for measuring the bending strength is as described above.
- An aqueous liquid agent that dissolves the adhesive agent and disperses or dissolves the carbonized material, and a powerful heat insulating material coating agent are applied to at least one surface of the carbonized molded article and then carbonized.
- a coating layer for a heat insulating material is preferable. Such a coating material for a heat insulating material will be described later.
- the laminate for a heat insulating material of the present invention in which the coating layer for a heat insulating material of the present invention as described above is laminated will be described. That is, the laminate for a heat insulating material of the present invention comprises a carbonized molded body having a bulk density of 0.08 to 0.8 gZcm 3 and the coating for a heat insulating material of the present invention laminated on at least one surface of the carbonized molded body. And a layer.
- the coating layer for a heat insulating material of the present invention described above is laminated, excellent dust generation prevention property, oxidation resistance, mechanical strength and heat insulation effect are obtained. Has been granted fruit.
- the coating agent for a heat insulating material of the present invention that can form the above-described coating layer for a heat insulating material of the present invention will be described.
- the coating agent for a heat insulating material of the present invention is
- carbon ⁇ is a commonly used carbonization firing treatment under a temperature condition of about 800 ° C to less than 20000 ° C, and 2000 ° C to 3000 ° C. It means any one of the heat treatment including the graphitization treatment under the temperature condition, and the one subjected to the heat treatment and the one subjected to the heat treatment.
- the carbonized material contained in such a coating material for a heat insulating material is a carbonized material having a carbonization rate of 40% or more.
- a carbonized material is preferably one that can have a carbonization rate of 50% or more. If the carbonization rate is less than 40%, heat shrinkage is large during the carbonization process, causing cracks, or the amount of noinda component after carbonization is insufficient, and the coating layer for heat insulating material is peeled off. There is a tendency.
- Such carbonized materials include those that can be carbonized such as thermosetting rosin pitch, which can have a carbonization rate of 40% or more, those that have already been carbonized, or any of these forces.
- thermosetting resin include phenol resin and furan resin.
- carbonized material other than the thermosetting resin include earth graphite powder, artificial graphite powder, glassy carbon powder, carbon please, carbon black, and the like. Further, among such carbonized materials, it is preferable to use furan resin from the viewpoint of higher adhesion to the carbonized molded body and appropriate fluidity.
- Such a carbonized material has a viscosity that is difficult to flow at a temperature up to the carbonization of the coating agent for a heat insulating material, together with the adhesive used together, and the gap between the scaly graphite powders. It has fluidity to the extent that it can be filled.
- the fluidity of such carbonized materials depends on the type of carbonized material and the resulting coating agent for thermal insulation. Therefore, it is necessary to select as appropriate depending on the situation, because it is also affected by the composition of the adhesive, the type and properties of the adhesive used, the size of the scaly graphite powder, the bulk density of the surface to be coated, and the like.
- a coating agent for a heat insulating material is applied to a carbonized molded body, heated to a carbonization temperature and carbonized, and then the coating component is coated. Judgment is made by observing the situation that flows from the coating surface to the inside, and the method of selecting conditions accordingly is adopted.
- the scaly graphite powder contained in the coating material for a heat insulating material acts so that each component hardly flows during the process of carbonizing the coating agent for a heat insulating material. Therefore, such a scaly graphite powder is required to have a certain size (average particle diameter) in order to achieve the above-described action.
- the average particle size of such scaly graphite powder depends on the bulk density of the carbonized molded article and the adhesive used in the coating agent for heat insulating materials, so it should be specified unconditionally. I can't. For example, if the bulk density of the coated surface is small!
- the average particle size of the scaly graphite powder is too fine, the coating agent tends to flow from the surface to be coated to the inside. Compared to the case where the bulk density of the surface is large, the scaly graphite powder tends to have a low adhesive strength unless it has a large average particle size. On the other hand, if the average particle size of the scaly graphite powder is too large, the coating property and dispersion stability of the resulting coating agent for heat insulating material tend to be lowered and the handling tends to be difficult. Therefore, the average particle size of the scaly graphite powder must be selected as appropriate.
- the average particle diameter of such scaly graphite powder is 50 111 to 500 111 when the bulk density of the material to be coated is 0.08 to 0.8 g / cm 3 . More preferably, it is more preferably 60 ⁇ m to 300 ⁇ m.
- the average particle size of such scaly graphite powder is less than 50 m, the heat reflectivity and the heat insulation effect tend to be lowered, and the adhesive strength of the coating layer for the heat insulating material in the laminate for the heat insulating material becomes small, and the heat insulating material. The coating layer tends to be easily peeled off.
- first scaly graphite powder scaly graphite powder having such an average particle diameter
- second scaly graphite powder scaly graphite powder having a smaller average particle diameter
- the second scaly graphite powder By including such second scaly graphite powder in the coating agent for a heat insulating material, the second scaly graphite powder enters a gap formed between particles of the first scaly graphite powder during coating, It is possible to reduce the gaps between the scaly graphite powder particles. Therefore, the inclusion of such second scaly graphite powder tends to provide a higher heat insulating effect, oxidation resistance and mechanical strength.
- the average particle size of the second scaly graphite powder is preferably 1 ⁇ m or more and less than 50 m, more preferably 5 ⁇ m or more and 30 ⁇ m or less.
- the scaly graphite powder includes a first scaly graphite powder having an average particle diameter in the range of 50 to 500 m, and an average particle diameter of 1 ⁇ m or more and less than 50 ⁇ m ( More preferably, it contains a second scaly graphite powder in the range of 5 ⁇ m to 30 ⁇ m. If the average particle size of the second scaly graphite powder is less than m, the particle size becomes too small, causing dust to scatter when mixed, or desorbing from the insulation coating layer.
- the gap between the scaly graphite powder particles There is a tendency to fail to achieve the effect of reducing.
- the blend ratio of the first and second scaly graphite powders in terms of mass is such that the first scaly graphite powder: second scaly graphite powder is about 4: 6 to 8: 2. It is more preferable that the ratio is about 4: 6 to 7: 3.
- the blending ratio of the first scaly graphite powder is less than the lower limit, the amount of dust generation tends to increase, the surface gloss tends to decrease, or the heat insulation effect tends to decrease.
- the acid resistance tends to decrease and the surface smoothness tends to decrease.
- first and second scaly graphite powders are not particularly limited, but include natural graphite (including massive natural graphite having crystal orientation) or Kist graphite generated at the bottom of the blast furnace. Can be used.
- the adhesive contained in the coating agent for heat insulating material can adhere a carbide or a component in the process of carbonization after an aqueous liquid agent described later evaporates in the process of carbonization. Is something.
- a sticking agent a force generally used as a sticking agent or a paste can be used.
- methylcellulose which is more preferably methylcellulose, ethinoresenorelose, hydroxyethinoremethenoresenorelose, or hydroxypropinoremethinoresenorose.
- methylcellulose which is more preferably methylcellulose, ethinoresenorelose, hydroxyethinoremethenoresenorelose, or hydroxypropinoremethinoresenorose.
- the type and content of such a sticking agent may be appropriately selected and used so that the viscosity of the resulting heat insulating material coating agent at 20 ° C is in the range of 50 to 15000 mPa ⁇ s. It is more preferable to select and use appropriately so as to be in the range of 1000 to 10,000 mPa's.
- the adhesive so that the viscosity of the coating agent for heat insulating material is within the above range, the flow of other components is sufficiently suppressed during the carbonization process. Since each component including the adhesive and the carbonized component on the contact surface of the carbonized molded article are sufficiently fixed, it is more difficult for the insulation material coating agent and the coated surface to be closer to each other.
- the adhesive layer sufficiently suppresses the flow of other components during the carbonization process, the resulting insulating coating layer becomes smooth and dense.
- the transmittance can be made sufficiently low, and further, dust prevention, oxidation resistance and mechanical strength can be improved.
- the kind and content of such a sticking agent is for a heat insulating material obtained by carbonization.
- the thickness of the coating layer is 50 m to 3 mm, dust prevention, oxidation resistance and mechanical strength are further improved and its gas permeability is more reliably 8.0 NL / hr-cm 2- m From the viewpoint of making it less than mH O, the prepared coating material for heat insulating material at 20 ° C.
- the viscosity is appropriately selected and used so that the viscosity is in the range of 2000-10000 mPa's. It is particularly preferable that the viscosity is appropriately selected so that the viscosity is in the range of 2000-8000 mPa ⁇ s.
- the aqueous liquid agent contained in the heat insulating material coating agent dissolves the adhesive and disperses or dissolves the carbonized material.
- an aqueous liquid agent include water and organic solvents having compatibility with water.
- organic solvents include alcohols such as methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, n -butyl alcohol, isobutyl alcohol, sec-butyl alcohol, tert-butyl alcohol, ethyl acetate sorb, and furfuryl alcohol.
- Ketones such as acetone and methyl ethyl ketone; aldehydes such as 2-furylaldehyde; ethylene glycol, propylene glycol, trimethylene glycol, butyl diglycol, 1,5-pentanediol, 1,6-hexanediol 1, 7-heptanediol and the like.
- an aqueous liquid agent water and one or more organic solvents other than water can be mixed and used. Further, as such an aqueous liquid agent, it is preferable to use a mixture of water and the following organic solvent having compatibility with water.
- an organic solvent such as butyl diglycol or ethyl acetate solvent from the viewpoint of high compatibility with water and high compatibility with a sticking agent. Is more preferable.
- the adhesive agent is contained in the heat insulating material coating agent V, the heat insulating material coating agent does not agglomerate and form a lump in the heat insulating material coating agent. Can be kept dispersed.
- the content of each component with respect to 100 parts by mass of the carbonized material is 10 to 200 parts by mass of the scaly graphite powder, 2 to 50 parts by mass of the adhesive agent, and
- the aqueous liquid agent is preferably 50 to 600 parts by mass.
- the content of such scaly graphite powder is less than 10 parts by mass with respect to 100 parts by mass of the carbonized material. If it is full, it is difficult to reduce the thermal conductivity, so the heat insulation effect tends to decrease.
- the amount exceeds 200 parts by mass with respect to 100 parts by mass of the carbonized material
- the surface smoothness and surface of the coating layer for heat insulating material obtained by reducing the coating property and dispersion stability on the carbonized molded body Glossiness tends to decrease.
- the content of such scaly graphite powder improves dust generation prevention, oxidation resistance and mechanical strength of the resulting heat insulating material coating layer, and more reliably provides gas permeability of 8.0 NL. / hr-cm 2 -mmH O or less
- it is more preferably 20 to 150 parts by mass, and further preferably 30 to 130 parts by mass with respect to 100 parts by mass of the carbonized material.
- the content of the adhesive is less than 2 parts by mass with respect to 100 parts by mass of the carbonized material, the viscosity of the resulting heat insulating material coating agent at 20 ° C becomes low, and the carbonization process In other words, it is difficult to sufficiently control the flow of other components in the heat-insulating material coating layer obtained by carbonization, which reduces dust generation prevention, acid resistance and mechanical strength, and lowers gas permeability. It tends to be difficult to suppress.
- the content of such a sticking agent exceeds 50 parts by mass with respect to 100 parts by mass of the carbonized material, the resulting coating agent for heat insulating material becomes too high at 20 ° C.
- the surface smoothness and surface gloss of the resulting insulating coating layer tend to be reduced.
- the content of such a sticking agent is to improve the dust prevention, oxidation resistance and mechanical strength of the resulting heat insulating material coating layer, and to ensure its gas permeability more reliably 8.0 NL / From the point of view of hr-cm 2 -mmH O or less, 2
- the content of the aqueous liquid agent is less than 50 parts by mass with respect to 100 parts by mass of the carbonized material, the viscosity of the coating agent tends to be too high and workability such as coating properties tends to be lowered.
- the concentration of other components in the coating agent becomes low, and a large number of times of application is required in order to obtain a coating layer for a predetermined thickness Tend to be necessary.
- the content of such an aqueous liquid agent is to improve the dust prevention, oxidation resistance and mechanical strength of the resulting insulation coating layer, and to ensure its gas permeability more reliably. / hr-cm 2 -mmH O or less
- the amount is 100 to 500 parts by mass with respect to 100 parts by mass of the carbonized material. Good.
- carbon fibers can be contained in addition to the respective components. Such carbon fibers contribute to reinforcing the coating layer. Therefore, the intensity
- Such carbon fiber may be any of PAN, pitch, and rayon carbon fibers. It is preferable to use carbon fibers having an average fiber length of 0.02 to 2 mm, and more preferably 0.05 to 1.5 mm. If the average fiber length is less than 0.02 mm, the effect of reinforcing the resulting insulating coating layer tends to be reduced.
- the average fiber length of such carbon fibers exceeds 2 mm, it is uniformly dispersed in the insulating coating agent. Tend to be difficult. That is, by setting the average fiber length of such carbon fibers in the above range, the effect of reinforcing the obtained coating layer for a heat insulating material and the uniform dispersion of the carbon fibers are balanced. It tends to be kept.
- the measuring method of such an average fiber length of carbon fiber is shown in the below-mentioned Example.
- the content of such carbon fibers is preferably 200 parts by mass or less, more preferably 100 parts by mass or less, with respect to 100 parts by mass of the carbonized material.
- the content of such carbon fibers exceeds 200 parts by mass, it tends to be difficult to uniformly disperse the carbon fibers.
- the coating agent for a heat insulating material preferably has a viscosity in the range of 50 to 15000 mPa ⁇ s at a temperature of 20 ° C, and more preferably 1000 to lOOOOmPa ⁇ s.
- a coating material for a heat insulating material when the thickness of the obtained coating layer for a heat insulating material is 50 m to 3 mm, the oxidation resistance, the dust prevention property and the mechanical strength are improved.
- the viscosity under a temperature condition of 20 ° C. is 2000 to 1000 from the viewpoint that the gas permeability is more reliably 8.0 NL / hr-cm 2 -m mH 2 O or less.
- the coating agent for heat insulating material is less than the lower limit, when the coating agent is coated on the surface of the carbonized molded body, the coating agent penetrates too much into the carbonized molded body, and the insulating agent has a uniform thickness. It becomes difficult to form a coating layer for materials, The resulting heat-insulating coating layer has a high gas permeability, and tends to decrease acid resistance, dust prevention and mechanical strength.
- the viscosity of the coating agent for heat insulating material exceeds the above upper limit, the workability at the time of coating deteriorates, and surface smoothness and surface gloss cannot be obtained.
- the oxidation resistance, dust generation prevention and mechanical strength of the resulting coating layer for heat insulating material tend to decrease.
- the method for producing such a heat insulating material coating agent is not particularly limited, and a method capable of uniformly dispersing the scaly graphite powder, the adhesive and the carbonized material in the aqueous liquid agent may be appropriately employed. Although it is possible, as a method for producing such a coating material for a heat insulating material, it is preferable to employ the method for producing a coating material for a heat insulating material of the present invention described below.
- each component used in the method for producing a coating agent for a heat insulating material according to the present invention and the amount of each component added (content in the coating agent for a heat insulating material) are as described above.
- the method for producing a coating agent for a heat insulating material of the present invention includes a step of dispersing a scaly graphite powder in water to obtain a first dispersion, and a method of dispersing a sticking agent in an organic solvent compatible with water. A step of obtaining a second dispersion, a step of mixing the first dispersion and the second dispersion to obtain a third dispersion, and a carbonization rate of 40% in the third dispersion. And a step of dispersing a carbonization material that can be obtained to obtain a coating agent for a heat insulating material.
- a method for producing a coating agent for a heat insulating material of the present invention first, while stirring water with a stirrer, scaly graphite powder is charged therein and uniformly dispersed therein. Obtain a dispersion.
- the water used as the dispersion medium is selected from the aforementioned aqueous liquid agents.
- such a first dispersion may contain the above-mentioned carbon fiber together with the scaly graphite powder as necessary.
- the adhesive is dispersed in an organic solvent compatible with water while stirring until the mass disappears to obtain a second dispersion.
- the second dispersion is added to the first dispersion thus obtained, and mixed uniformly with good stirring to obtain a third dispersion.
- a carbonized material having a carbonization rate of 40% or more can be added and dispersed uniformly to obtain a coating agent for heat insulating material.
- the scaly graphite powder, the adhesive agent, and the carbonized material can be uniformly dispersed. That is, when a scaly graphite powder, a sticking agent, and a carbonized material are contained in an aqueous liquid regardless of the order, the components of the sticking agent and the carbonized material are likely to agglomerate because they have a high viscosity. It becomes difficult to uniformly disperse each component in the aqueous solution.
- a first dispersion in which scaly graphite powder is dispersed in water in advance, and an organic solvent and a sticking agent in advance are dispersed.
- the third dispersion liquid using the second dispersion liquid in the stage of preparing the third dispersion liquid!
- the scaly graphite powder and the adhesive can be uniformly dispersed in the aqueous liquid agent.
- the compatibility between the carbonized material and the third dispersion is improved, so that the carbonized material can be uniformly dispersed.
- each component can be uniformly dispersed.
- Such a method for producing a coating layer for a heat insulating material is basically a method including a coating step of a coating agent for a heat insulating material and a carbonization step of the coating agent for the heat insulating material.
- the step of applying the heat insulating material coating agent will be described.
- carbonization molding with a bulk density of 0.08 to 0.8 gZcm 3 is performed.
- a laminate before carbonization coated with a coating agent for heat insulating material is obtained.
- the material to be coated used for producing such a coating layer for a heat insulating material is a carbonized molded body having a bulk density of 0.0 to 0.8 gZcm 3 and a bulk density of 0.09 to 0.75 g / more preferred tool bulk density carbonized-molded body cm 3 0. 1 to 0. carbonized-molded body 7GZcm 3 is more preferable.
- the bulk density of such a carbonized molded product is less than 0.08 gZcm 3 , each component of the insulation coating agent flows into the carbonized molded product when a coating agent for a thermal insulation material is applied.
- the layer exceeds 0.8 gZcm 3 , the heat insulating effect is lowered.
- the coating layer for a heat insulating material is prevented from peeling off from the surface of the carbonized molded article and generation of dust and the like is provided, and surface smoothness and surface glossiness are imparted to the surface.
- Carbonized compacts that should increase the mechanical strength of laminates for thermal insulation obtained by carbonization are targeted. Examples of such a carbonized molded body include single-layer or multi-layer carbonized molded bodies such as carbon fiber felt, graphite sheet, carbon fiber cloth, and carbon fiber-containing paper.
- a method for applying a coating agent for a heat insulating material to such a carbonized molded body is not particularly limited, and a known method can be appropriately applied.
- a method using a device such as a printing machine or a bar coater.
- a method using a roller, a brush, or the like, a method of applying by spraying with a sprayer, or the like can be used.
- the coating amount of the coating agent for a thermal insulator that the force 500 ⁇ 2000GZm 2 and is preferred instrument 700 ⁇ 1500gZm 2 to there are different from depending on the type of carbonized-molded body to be applied Is more preferable.
- the coating amount is less than 500 gZm 2 , the thickness of the resulting insulation coating layer tends to be less than 50 m.
- the resulting coating layer for insulation is obtained. It tends to be uneconomical when the thickness exceeds 3 mm.
- the carbonization step of the coating agent for heat insulating material will be described.
- the coating material for a heat insulating material obtained as described above is used. Carbonization of the laminate before carbonization coated with the coating agent is performed.
- the coating layer for heat insulating material of the present invention can be produced on the surface of the carbonized molded body.
- the coating layer for heat insulating material of the present invention is laminated on the surface of the carbonized molded body.
- the laminate for a heat insulating material of the invention can be obtained.
- “carbonization” as used herein refers to a commonly used carbonization firing process at a temperature of 800 ° C to less than 2000 ° C and a graphite alloy at a temperature of 2000 ° C to 3000 ° C. It means heat treatment including treatment.
- the carbonized molded body to which the coating agent for a heat insulating material is usually applied is also carbonized at the same time.
- it may be further baked.
- the carbonization conditions cannot be unconditionally specified because the V deviation is appropriately set according to the type of the carbonized molded body and the use of the obtained laminate for a heat insulating material.
- the carbonized molded body used is a carbon fiber felt
- a high-temperature heating furnace is used and a condition of holding for 1 hour in a non-acidic gas atmosphere or in a vacuum at 2000 ° C is adopted. It is preferable to do.
- the temperature is slowly increased to about 700 ° C at a rate of temperature increase of, for example, 150 ⁇ 50 ° C Zhr, for example, when gasifying aqueous liquids and the like.
- the laminate for a heat insulating material (for example, carbon fiber felt) obtained in this way is used as a heat insulating material.
- a heat insulating material for example, carbon fiber felt
- the bulk density is preferably changed as appropriate.
- a coating for a heat insulating material may be formed on a surface obtained by laminating a surface covering material such as a carbon fiber cloth, a carbon fiber-containing spacer, or a cZc composite on a carbonized molded body.
- a coating agent for a heat insulating material of the present invention can also be produced by applying a polishing agent.
- a surface coating material such as pyrolytic carbon may be further laminated on the surface of the insulating material coating layer in the insulating material laminate.
- the present invention is not limited to the following examples.
- the gas permeability, dust generation, oxidation resistance and bending strength of the coating layer for heat insulating material are measured according to the above-mentioned measuring methods, and the average fiber length, compressive strength, surface smoothness and surface glossiness are measured. It was performed as follows.
- the average particle diameters of the scaly graphite powder and carbon please used in each example and comparative example were measured by the measurement methods described below.
- the sample obtained in this way was attached to an image analyzer (trade name “Luzettas IIIU” manufactured by Yureco Co., Ltd.), and the fiber length of a single fiber was measured with 1000 to 1300 measurement pieces, and the average fiber length ( Volume average).
- a sample used for the measurement of the compressive strength a sample having the same dimensions as the sample used for measuring the dust generation amount and the same coating treatment as the sample used for measuring the dust generation amount is used. Using. Then, using the autograph (trade name “Shimadzu Autograph AGS—H 5kN” manufactured by Shimadzu Corporation) used for the measurement of the bending strength described above, the bending test fulcrum and punch were replaced with the compression test platen, and the load A uniaxial compression test was conducted with the direction parallel to the fiber orientation surface of the sample, and the maximum breaking load force compression strength obtained was determined.
- A The surface is smooth and has no irregularities
- a powder sample of scaly graphite powder or carbon please used in each example and each comparative example is prepared. Then, about 0.5 g of such a powder sample is placed in a beaker, and a few drops of a dispersant (trade name “SN Dispersant 7343-C”, manufactured by San Nopco Co., Ltd.) is added to the beaker and shaken while the powder is mixed. The sample is acclimated to the dispersant. Next, after adding 30 mL of pure water to the beaker and applying ultrasonic waves to disperse for about 2 minutes, use a particle size distribution analyzer (trade name “Microtrac FRA-9220” manufactured by Nikkiso Co., Ltd.). To measure the particle size distribution. The average particle size of the powder sample was obtained by rounding the cumulative 50% particle size (that is, the particle size at which the accumulated volume is 50% in the particle size distribution) to the first decimal place.
- a dispersant trade name “SN Dispersant 7343-C”,
- Pitch-based carbon fiber felt with an average fiber length of 50 mm (Kureha Chemical Industry Co., Ltd., “Tare Force Felt F-110”)
- phenol resin-impregnated liquid Showa Polymer Co., Ltd., product
- the name “Shonol BRS-3896” was impregnated with 44 parts by mass to obtain a laminate in which 6 layers were laminated in a flat plate shape.
- the laminate thus obtained was press-molded at a temperature of 150 ° C. and a pressure of 0.015 MPa to cure the resin.
- the laminated body in which the resin is cured in this manner is further graphitized in a vacuum at a temperature of 2000 ° C. for 1 hour, and a flat carbon having a felt part bulk density of 0.16 gZcm 3 is obtained.
- a fiber felt laminate carbonized molded article: thickness 48 mm
- the thermal insulation coating agent was applied at a rate of lkgZm 2 with a brush to one side of the carbon fiber felt laminate cut into a size of 100 mm in length, 100 mm in width, and 6 mm in thickness.
- the resin was cured while drying for 3 hours under the temperature condition of ° C.
- the temperature was raised to a holding temperature of 2000 ° C at a heating rate of 250 ° CZ.
- a timed graphitization treatment carbonization
- Example 2 Instead of the carbon fiber felt laminate having a bulk density of 0.16 g / cm 3 prepared in Example 1, it was treated with graphite at 2000 ° C. in the same manner as in the preparation of the carbonized molded body in Example 1. except for using the bulk density 0. 12 g / cm 3 and becomes thus prepared to obtained bulk density 0. 12 g / cm 3 of carbon fiber felt laminated body (carbonized-molded body), the same procedure as in example 1 A laminate for thermal insulation and samples used for each test were manufactured. The surface of the coating layer for thermal insulation laminated on the thermal insulation laminate thus obtained was smooth and glossy.
- Example 2 Instead of the carbon fiber felt laminate having a bulk density of 0.16 g / cm 3 prepared in Example 1, it was treated with graphite at 2000 ° C. in the same manner as in the preparation of the carbonized molded body in Example 1. except for using the carbon fiber felt having a bulk density of 0. 4g / cm 3 obtained by prepared so that the bulk density 0. 4g / cm 3, the laminated body for a thermal insulator in the same manner as in example 1 and the Samples used for testing were manufactured. The surface of the insulating coating layer laminated on the insulating laminate thus obtained was smooth and glossy.
- the content of the scaly graphite powder (A) in Example 1 (made by Nippon Graphite Industry Co., Ltd., trade name “F # 2—F”) was changed to 48 parts by mass and 28 parts by mass, and the scaly graphite powder (B) (Japan Except that the content of “ACP-3000” manufactured by Graphite Industries Co., Ltd. was changed to 41 parts by mass for 21 parts by mass, the laminate for insulation and the samples used for each test were prepared in the same manner as in Example 1. Manufactured. The surface of the insulating material coating layer laminated on the insulating material laminate thus obtained was smooth and glossy.
- Example 2 instead of the carbon fiber felt laminate having a bulk density of 0.16 gZcm 3 in Example 1, a carbonized molded body having a bulk density of 0.7 gZcm 3 (trade name “Tare Force NFR” manufactured by Kureha Chemical Industry Co., Ltd.) was used. Except for this, a laminate for a heat insulating material and a sample used for each test were manufactured in the same manner as in Example 1. The surface of the coating layer for heat insulation laminated on the laminate for heat insulation thus obtained was smooth and glossy.
- Example 6 instead of the coating agent prepared in Example 1, 100 parts by weight of furan rosin (manufactured by Hitachi Chemical Co., Ltd., trade name “Hitafuran VF-302”), scaly graphite powder (A) (manufactured by Nippon Graphite Industries Co., Ltd., Product name “F # 2— F”) 50 parts by weight, scaly graphite powder (B) (manufactured by Nippon Graphite Industries Co., Ltd., trade name “Yuji?
- Example 6 For the heat insulating material prepared by changing the carbon fiber content of the heat insulating material coating agent prepared in Example 6 from 50 parts by mass to 100 parts by mass instead of the heat insulating material coating agent prepared in Example 1.
- a laminate for a heat insulating material and a sample used for each test were manufactured in the same manner as in Example 1 except that the coating agent was used.
- the surface of the coating layer for thermal insulation laminated on the thermal insulation laminate thus obtained was smooth and glossy.
- Example 1 the thermal insulation coating agent methylcellulose prepared in Example 1 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name “Metroze SM-4000”) ))
- a heat insulating coating agent prepared from 4.5 parts by mass to 2.3 parts by mass was used. Samples to be used were produced. The surface of the heat insulating material coating layer laminated on the heat insulating material laminate thus obtained was smooth and glossy.
- the thermal insulation coating agent methylcellulose prepared in Example 1 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name “Metroze SM-4000”) ))
- Other methylcellulose made by Shin-Etsu Chemical Co., Ltd., trade name “Met” Rose SM-1500 ”
- a heat insulating material in the same manner as in Example 1 except that the coating agent for heat insulating material prepared with a methyl cellulose content of 4.5 to 9.0 parts by weight was used.
- the laminated body for a test and the sample used for each test were manufactured.
- the surface of the coating layer for thermal insulation laminated on the thermal insulation laminate thus obtained is smooth and glossy.
- the thermal insulation coating agent methyl cellulose prepared in Example 1 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name “Metroze SM-4000”) ”) As another methylcellulose (trade name“ Metrorose SM-400 ”manufactured by Shin-Etsu Chemical Co., Ltd.), and the methylcellulose content was adjusted from 4.5 to 22.5 parts by mass.
- a laminated body for heat insulating material and a sample used for each test were manufactured in the same manner as in Example 1 except that the coating agent for heat insulating material was used.
- the surface of the insulation coating layer laminated on the insulation laminate thus obtained is smooth and glossy.
- the thermal insulation coating agent butyl diglycol (trade name “Butyl Diglycol” manufactured by Nippon Milk Chemical Co., Ltd.) ) Content of 45 to 18 parts by mass, except that a heat insulating coating material was used, and the same procedure as in Example 1 was used for the heat insulating laminate and each test.
- a coating agent for heat insulating material prepared in the same manner as in Example 1 was prepared except that methylcellulose was not used.
- furan resin made by Hitachi Chemical Co., Ltd., trade name “Hitafuran VF-302”
- scaly graphite powder A
- F # 2-F scaly graphite powder
- B scaly graphite powder
- the carbon fiber content of the thermal insulation coating agent prepared in Example 6 is changed from 50 parts by mass to 100 parts by mass, and the methyl ethyl ketone content 20 to 200 parts by mass, and further mixed and dispersed without mixing scaly graphite powder (B) (manufactured by Nippon Graphite Industry Co., Ltd., trade name “ACP-3000”), methyl ethyl cellulose and water
- B scaly graphite powder
- ACP-3000 trade name “ACP-3000”
- a laminate for a heat insulating material and a sample used for each test were manufactured in the same manner as in Example 1 except that the coating agent for a heat insulating material prepared as described above was used.
- the surface of the heat insulating material coating layer laminated on the heat insulating material laminate thus obtained was uneven and glossy.
- the methyl ether ketone content of the heat insulating material coating agent prepared in Example 6 was changed from 20 parts by mass to 200 parts by mass.
- a laminate for thermal insulation and samples used for each test were produced in the same manner as in Example 1 except that a coating agent for thermal insulation prepared by mixing and dispersing without mixing chill cellulose and water was used. .
- the surface of the coating layer for a heat insulating material of the laminate for a heat insulating material thus obtained had irregularities and was not glossy.
- the carbon fiber content of the thermal insulation coating agent prepared in Example 6 is changed from 50 parts by mass to 100 parts by mass, and the methyl ethyl ketone content
- the heat insulating material laminate and the heat insulating material laminate were prepared in the same manner as in Example 1 except that the heat insulating material coating agent prepared by mixing and dispersing without mixing methyl cellulose and water was used. Samples used for each test were prepared. The surface of the coating layer for heat insulating material laminated on the heat insulating material laminate thus obtained was uneven and glossy.
- the scaly graphite powder (A) of the thermal insulation coating agent prepared in Example 6 (trade name “F” # 2-F ”) content from 50 parts by mass to 100 parts by mass, methyl ethyl ketone content from 20 parts by mass to 200 parts by mass, and scaly graphite powder (B) (Nippon Graphite Industry Co., Ltd.) Product name “ACP-3000”) Carbon Breeze (made by Sun Chemical Co., Ltd., product name “MC Coats Grade C”) instead of 50 parts by mass (average particle size 11.0 m) ) Insulation laminate and each test in the same manner as in Example 1 except that 100 parts by mass was used and the coating agent for insulation was prepared by mixing and dispersing carbon fiber, methylcellulose and water without mixing. The sample used for was manufactured. The surface of the insulation coating layer laminated on the laminate for insulation obtained in this way was uneven and glossy.
- the coating layer for a heat insulating material of the present invention obtained by using the coating agent for a heat insulating material prepared in Examples 1 to 11 is a gas. All the transmittance is 7.2 NL / hr-cm 2 -mmH 2 O or less and has a sufficiently low gas permeability.
- the heat insulating material laminate in which the heat insulating material coating layer of the present invention is laminated has a dust generation amount of 300 or less, the heat insulating material coating layer of the present invention has It was also confirmed that it has excellent dust prevention properties. Furthermore, the laminate for a heat insulating material of the present invention in which the coating layer for a heat insulating material of the present invention is laminated has been confirmed to have excellent oxidation resistance, has high bending strength and compressive strength, and is mechanical. It was confirmed that the strength was also high.
- the thermal insulation coating layer obtained using the thermal insulation coating agent prepared in Comparative Examples 2 to 5 has a gas permeability of 8.5 NL / hr-cm 2 -mmH 2 O or more.
- the gas permeability was high. Furthermore, it was confirmed that the laminate for a heat insulating material in which such a coating layer for a heat insulating material is laminated does not have sufficient properties such as dust prevention, oxidation resistance, and mechanical strength. Further, it was confirmed that the coating agent for a heat insulating material prepared in Comparative Example 1 could not be applied to a carbonized molded article having low workability.
- the surface is smooth and dense, excellent in surface smoothness and surface gloss, and sufficiently low in gas permeability.
- Thermal insulation coating layer capable of imparting excellent dust generation prevention, oxidation resistance, mechanical strength and thermal insulation effect to the laminate, thermal insulation laminate having the same, and thermal insulation for obtaining the same It is possible to provide a coating agent for heat treatment and a method for producing the coating agent for heat insulation.
- the coating layer for a heat insulating material of the present invention is excellent in that it provides the above-described properties necessary for a heat insulating material, and therefore, a laminate for a heat insulating material of the present invention using a carbonized molded body is obtained. It is very useful as a coating layer for thermal insulation.
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP06731995A EP1881040B1 (en) | 2005-04-22 | 2006-04-17 | Coating layer for heat insulation, laminate for heat insulation, coating material for heat insulation and process for production of the coating material |
US11/918,887 US20090081436A1 (en) | 2005-04-22 | 2006-04-17 | Coating layer for thermal insulator, laminated body for thermal insulator, coating agent for thermal insulator, and method of producing coating agent for thermal insulator |
JP2007514591A JP4883805B2 (ja) | 2005-04-22 | 2006-04-17 | 断熱材用コーティング層、断熱材用積層体、断熱材用コーティング剤、並びに、断熱材用コーティング剤の製造方法 |
CN2006800134936A CN101163756B (zh) | 2005-04-22 | 2006-04-17 | 绝热材料用涂层、绝热材料用叠层体、绝热材料用涂布剂、及绝热材料用涂布剂的制造方法 |
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PCT/JP2005/008257 WO2006114897A1 (ja) | 2005-04-22 | 2005-04-22 | 断熱材用コーティング剤及びそれを用いてなる断熱材用積層体 |
JPPCT/JP2005/008257 | 2005-04-22 | ||
JP2005130948 | 2005-04-28 | ||
JP2005-130948 | 2005-04-28 |
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US (1) | US20090081436A1 (ja) |
EP (1) | EP1881040B1 (ja) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017057112A (ja) * | 2015-09-16 | 2017-03-23 | 大阪ガスケミカル株式会社 | 表面処理された成形断熱材及びその製造方法 |
WO2024117031A1 (ja) * | 2022-11-29 | 2024-06-06 | イビデン株式会社 | 断熱材 |
WO2024117030A1 (ja) * | 2022-11-29 | 2024-06-06 | イビデン株式会社 | 断熱材及び断熱材の製造方法 |
Families Citing this family (2)
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JP2014069187A (ja) * | 2012-09-27 | 2014-04-21 | Kobe Steel Ltd | プレス成形された金属材料の製造方法、および、熱交換器用部材の製造方法 |
KR101799811B1 (ko) * | 2016-05-17 | 2017-12-21 | 지에스산건 주식회사 | 단열처리용 조성물 및 이를 이용한 단열성 향상 마감패널의 제조방법 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104197A (ja) | 1974-01-23 | 1975-08-16 | ||
JPH01153572A (ja) | 1987-12-09 | 1989-06-15 | Dainippon Ink & Chem Inc | 成形断熱材の製造方法 |
JPH03163174A (ja) | 1989-08-22 | 1991-07-15 | Osaka Gas Co Ltd | 断熱性コーティング剤とそれを用いたコーティング方法 |
JPH03228886A (ja) | 1990-02-02 | 1991-10-09 | Mitsubishi Kasei Corp | 炭素質成型断熱材用コーティング剤 |
JPH03258880A (ja) | 1990-03-08 | 1991-11-19 | Mitsubishi Kasei Corp | 炭素質成型断熱材用高耐久性コーティング剤 |
JPH03288639A (ja) * | 1990-04-05 | 1991-12-18 | Mitsui Eng & Shipbuild Co Ltd | 断熱材 |
JPH04338170A (ja) * | 1991-05-15 | 1992-11-25 | Petoca:Kk | 炭素繊維系成形断熱材及びその製造方法 |
JP2000327441A (ja) * | 1999-05-26 | 2000-11-28 | Kureha Chem Ind Co Ltd | 複合炭素質断熱材及びその製造方法 |
JP2005133033A (ja) * | 2003-10-31 | 2005-05-26 | Kureha Chem Ind Co Ltd | 断熱材用コーティング剤及びそれを用いてなる断熱材用積層体 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3301742A (en) * | 1961-06-23 | 1967-01-31 | Haveg Industries Inc | Laminate comprising carbon fibers, carburized resin, and inorganic oxide fibers |
US3671385A (en) * | 1970-07-17 | 1972-06-20 | Atomic Energy Commission | Fibrous carbonaceous composites and method for manufacturing same |
JPS6090805A (ja) * | 1983-10-25 | 1985-05-22 | Kobe Steel Ltd | 不透過性炭素成形体の製造方法 |
US4582632A (en) * | 1983-04-11 | 1986-04-15 | Kabushiki Kaisha Kobe Seiko Sho | Non-permeable carbonaceous formed bodies and method for producing same |
JPS6090806A (ja) * | 1983-10-25 | 1985-05-22 | Kobe Steel Ltd | 不透過性炭素成形体及びその製造方法 |
JPS6476965A (en) * | 1987-06-22 | 1989-03-23 | Kureha Chemical Ind Co Ltd | Carbonaceous cylindrical unit and production thereof |
US5145732A (en) * | 1989-03-01 | 1992-09-08 | Osaka Gas Company Limited | High bulk density carbon fiber felt and thermal insulator |
TW472089B (en) * | 1996-09-17 | 2002-01-11 | Toyo Kohan Co Ltd | Surface treated steel sheet with low contact resistance and connection terminal material produced thereof |
JP2001139696A (ja) * | 1999-11-16 | 2001-05-22 | Nippon Steel Chem Co Ltd | 導電性樹脂成形品の製造方法及び燃料電池用セパレータ |
-
2006
- 2006-04-17 JP JP2007514591A patent/JP4883805B2/ja not_active Expired - Fee Related
- 2006-04-17 WO PCT/JP2006/308066 patent/WO2006115102A1/ja active Application Filing
- 2006-04-17 EP EP06731995A patent/EP1881040B1/en not_active Not-in-force
- 2006-04-17 US US11/918,887 patent/US20090081436A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104197A (ja) | 1974-01-23 | 1975-08-16 | ||
JPH01153572A (ja) | 1987-12-09 | 1989-06-15 | Dainippon Ink & Chem Inc | 成形断熱材の製造方法 |
JPH03163174A (ja) | 1989-08-22 | 1991-07-15 | Osaka Gas Co Ltd | 断熱性コーティング剤とそれを用いたコーティング方法 |
JPH03228886A (ja) | 1990-02-02 | 1991-10-09 | Mitsubishi Kasei Corp | 炭素質成型断熱材用コーティング剤 |
JPH03258880A (ja) | 1990-03-08 | 1991-11-19 | Mitsubishi Kasei Corp | 炭素質成型断熱材用高耐久性コーティング剤 |
JPH03288639A (ja) * | 1990-04-05 | 1991-12-18 | Mitsui Eng & Shipbuild Co Ltd | 断熱材 |
JPH04338170A (ja) * | 1991-05-15 | 1992-11-25 | Petoca:Kk | 炭素繊維系成形断熱材及びその製造方法 |
JP2000327441A (ja) * | 1999-05-26 | 2000-11-28 | Kureha Chem Ind Co Ltd | 複合炭素質断熱材及びその製造方法 |
EP1184356A1 (en) | 1999-05-26 | 2002-03-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Composite carbonaceous heat insulator |
JP2005133033A (ja) * | 2003-10-31 | 2005-05-26 | Kureha Chem Ind Co Ltd | 断熱材用コーティング剤及びそれを用いてなる断熱材用積層体 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017057112A (ja) * | 2015-09-16 | 2017-03-23 | 大阪ガスケミカル株式会社 | 表面処理された成形断熱材及びその製造方法 |
WO2024117031A1 (ja) * | 2022-11-29 | 2024-06-06 | イビデン株式会社 | 断熱材 |
WO2024117030A1 (ja) * | 2022-11-29 | 2024-06-06 | イビデン株式会社 | 断熱材及び断熱材の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4883805B2 (ja) | 2012-02-22 |
EP1881040B1 (en) | 2012-01-25 |
US20090081436A1 (en) | 2009-03-26 |
EP1881040A1 (en) | 2008-01-23 |
JPWO2006115102A1 (ja) | 2008-12-18 |
EP1881040A4 (en) | 2009-07-22 |
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