WO2018079468A1 - アルミナ質繊維連続シートの製造方法及びアルミナ質繊維連続シート - Google Patents

アルミナ質繊維連続シートの製造方法及びアルミナ質繊維連続シート Download PDF

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WO2018079468A1
WO2018079468A1 PCT/JP2017/038145 JP2017038145W WO2018079468A1 WO 2018079468 A1 WO2018079468 A1 WO 2018079468A1 JP 2017038145 W JP2017038145 W JP 2017038145W WO 2018079468 A1 WO2018079468 A1 WO 2018079468A1
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Prior art keywords
continuous sheet
alumina fiber
precursor
variation
fiber continuous
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PCT/JP2017/038145
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English (en)
French (fr)
Japanese (ja)
Inventor
康孝 大島
浩一 藤
和己 野澤
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デンカ株式会社
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Priority to CN201780066757.2A priority Critical patent/CN109891014B/zh
Priority to JP2018547646A priority patent/JP7111620B2/ja
Publication of WO2018079468A1 publication Critical patent/WO2018079468A1/ja

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00—Heating or cooling textile fabrics
    • D06C7/04—Carbonising or oxidising
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material

Definitions

  • the present invention relates to a method for producing an alumina fiber continuous sheet and an alumina fiber continuous sheet.
  • an alumina fiber precursor is formed by spinning a spinning stock solution containing an aluminum compound, and the precursor fiber is deposited on an endless belt to form a precursor continuous sheet.
  • a method of forming an alumina continuous sheet by firing is known.
  • a method is known in which the precursor sheet is subjected to a needling treatment and then fired to produce an alumina fiber sheet.
  • the continuous alumina fiber sheet produced by the above method is widely used as a heat insulating material for a heating furnace, for example, utilizing its excellent fire resistance and heat insulating properties.
  • the alumina fiber continuous sheet manufactured by the above method is installed between a ceramic honeycomb carrier used as an exhaust gas purification catalytic converter or a diesel engine particulate filter and its housing case in the automotive parts field. It is used as a holding material (also called a gripping material).
  • the holding material has a role of preventing the honeycomb carrier from being damaged by hitting the inner wall of the housing case due to vibration or impact.
  • An object of the present invention is to provide a method for producing an alumina fiber continuous sheet having a uniform surface mass, and an alumina fiber continuous sheet capable of reducing variation in holding force when used as a holding material. .
  • the variation in the surface mass of the alumina fiber continuous sheet is the lamination of the precursor continuous sheet when the alumina fiber precursor is loaded onto the stacking device. It has been found that the part that is caused by the variation and particularly has a great influence on the variation of the surface mass is the surface layer portion of the precursor continuous sheet. Therefore, it has been clarified that by removing the surface layer of the precursor continuous sheet, it is possible to produce an alumina fiber continuous sheet with less variation in surface mass.
  • the holding force of the carrier is embodied by the friction coefficient of the holding material. Therefore, in order to obtain a high holding force, a higher friction coefficient is better.
  • the present invention employs the following means in order to solve the above problems.
  • (1) (I) A step of obtaining an alumina fiber precursor by spinning a spinning stock solution mainly composed of an aluminum compound and a silicon compound, and (II) a precursor continuous by allowing the alumina fiber precursor to descend on an accumulator.
  • a step of forming a sheet (III) a step of slicing and smoothing the surface layer of the precursor continuous sheet with a slicing machine, (IV) a step of performing confounding treatment by needling on the precursor continuous sheet, and (V) the above The manufacturing method of the alumina fiber continuous sheet manufactured through the process of baking a precursor continuous sheet.
  • the slicing machine is a slicing machine having a mechanism for reciprocally sliding the upper and lower two cutting blades provided with comb-shaped blade portions to the left and right, and performing cutting by sliding contact between the comb-shaped blade portions.
  • an alumina fiber continuous sheet having a uniform surface mass can be produced by a simpler method than before, and variation in holding force when used as a holding material can be reduced.
  • An alumina fiber continuous sheet can be provided.
  • the method for producing an alumina fiber continuous sheet according to the present invention comprises (I) a step of spinning an original spinning solution mainly composed of an aluminum compound and a silicon compound to obtain an alumina fiber precursor, and (II) the alumina fiber precursor. And (III) slicing and smoothing the surface layer of the precursor continuous sheet with a slicing machine, and (IV) entanglement by needling on the precursor continuous sheet. A process is performed, and (V) a process of firing the precursor continuous sheet.
  • a known method can be applied to the step of obtaining an alumina fiber precursor by spinning a spinning solution mainly composed of an aluminum compound and a silicon compound of the present invention, and the production method is not particularly limited.
  • the aluminum compound and silicon compound that are the main components of the spinning dope are not particularly limited.
  • aluminum oxychloride, alumina sol, aluminum nitrate, aluminum isopropylate, aluminum acetate, aluminum alkoxide and the like are preferable as the aluminum compound.
  • silica sol, polysiloxane, colloidal silica, water-soluble silicone, silicon alkoxide and the like are preferably used.
  • the chemical composition of the alumina fiber continuous sheet is not particularly limited, but the one containing 72 to 97% by mass of the alumina component in terms of Al 2 O 3 and 28 to 3% by mass of the silica component in terms of SiO 2 is advantageous in terms of heat resistance. preferable.
  • a spinning aid such as polyvinyl alcohol, polyethylene oxide, polyethylene glycol, glucose, methylcellulose, starch, etc., in order to make the viscosity range suitable for spinning, It is also possible to perform adjustment by vacuum concentration.
  • Examples of a method for processing the spinning dope into an alumina fiber precursor include a method of rapidly drying the spinning dope while extruding it from the pores of a die die into the air.
  • a method for rapidly drying the spinning dope while extruding it from the pores of a die die into the air.
  • the mold die may be fixed or may have a movable structure.
  • a spinning stock solution is supplied into a hollow disk rotating at a peripheral speed of 5 m / s or more and 100 m / s or less, and a plurality of diameters of 0.1 mm or more and 1.3 mm or less provided on the circumferential surface of the disk.
  • the fiber precursor can be obtained by ejecting the spinning stock solution radially (thread-like) from the pores and rapidly drying it in contact with a high-speed air stream.
  • alumina fiber precursor on the accumulating device there is no particular limitation on the method of depositing the alumina fiber precursor on the accumulating device to obtain a precursor continuous sheet, but a method of accumulating it on a belt conveyor or a net conveyor and forming it into a continuous sheet is preferably used.
  • the surface layer of the precursor continuous sheet 20 accumulated on the transfer net conveyor 21 is sliced by the slicing machine 1 and smoothed.
  • the transport speed of the transport net conveyor 21 when slicing (the transport speed of the precursor continuous sheet 20) is preferably 30 to 400 mm / min, more preferably 30 to 200 mm / min, and 60 to 100 mm. More preferably, it is / min.
  • the conveyance speed is 30 to 400 mm / min, the variation in surface mass can be further reduced.
  • the slicing machine that slices the surface layer part of the continuous precursor sheet is a band saw slicing machine that rotates a band-shaped blade at high speed, a slicing machine that has a mechanism that reciprocates the blade left and right, and a circular blade that rotates and cuts.
  • a roll cutter slicing machine or the like that performs the above can be used.
  • a slicing machine (hereinafter, “upper and lower 2”) has a mechanism for sliding the two upper and lower cutting blades having comb-shaped blade portions back and forth and sliding by sliding contact between the comb-shaped blade portions.
  • a single-blade reciprocating slicing machine ” is most preferable for reducing variation in surface mass.
  • FIG. 2 schematically shows an example (top view) of an upper and lower two-blade reciprocating slicing machine.
  • This slicing machine reciprocally slides the upper cutting blade 101 and / or the lower cutting blade 102 left and right (the cutting blade sliding direction indicated by the arrow in the figure) by the power of the blade drive motor 11, Cutting is performed by sliding contact between the comb-shaped blade portions.
  • the angle between the blade of the slicing machine and the precursor continuous sheet is preferably 0 to 10 °.
  • the angle formed by the blade of the slicing machine and the precursor continuous sheet means the angle ⁇ (corresponding to reference numeral 30) in FIG. 3, and the plane including the blade 10 of the slicing machine and the lower surface of the precursor continuous sheet The smaller of the angles formed by.
  • the slice amount of the surface layer portion is preferably 5 to 30% by mass of the entire precursor continuous sheet. More preferably, it is 10 to 22% by mass, and still more preferably 10 to 17% by mass. If the slicing amount is small, there is a possibility that the surface layer part that causes the variation in surface mass may not be removed sufficiently, and if the slicing amount is excessively increased, the productivity is lowered.
  • the surface mass value of the alumina fiber continuous sheet can be adjusted by the production amount of the precursor fiber, the conveying speed of the stacking device, and the slice amount.
  • the average value of the surface mass of the alumina fiber continuous sheet is preferably 300 to 3000 g / m 2 .
  • the number of needling strokes is preferably 20 to 50 strokes / cm 2 . If the number of shots is less than this range, sufficient mechanical strength may not be obtained due to insufficient needling, and if it is large, strength may be reduced due to precursor fiber breakage.
  • a continuous furnace such as a roller hearth kiln is preferably used.
  • the maximum temperature of the continuous heating furnace is 1000 ° C. or higher and 1300 ° C. or lower, preferably 1150 ° C. or higher and 1250 ° C. or lower.
  • the structure of the heating furnace is not limited.
  • the precursor continuous sheet is heated from room temperature to 1000 ° C. or less, preferably 850 ° C. or less at the stage where the needling treatment is completed.
  • a degreasing process is performed to discharge moisture and acidic components remaining in the body continuous sheet and organic matter that is a decomposition product of the viscosity-imparting agent from the furnace, and as a second stage, the precursor continuous sheet after degreasing is fired at a higher temperature.
  • a staged heating furnace that performs a crystallization step of crystallizing a part of the inorganic compound is preferably used.
  • the heating furnace in the degreasing process desirably has a structure that allows introduction of hot air and discharge of volatile components, and the temperature rising rate is preferably 6 ° C./min or less, more preferably 4 ° C./min or less. If the rate of temperature rise is too high, volatilization of moisture and acidic components and decomposition of the viscosity-imparting agent will occur without sufficient volume shrinkage, resulting in fibers with many defects, which may make it difficult to exhibit properties. .
  • the heating furnace in the crystallization process preferably has a structure in which the heating element is resistance-heated. With this structure, the maximum firing temperature can be precisely controlled, and the crystal form of the inorganic compound of the alumina fiber aggregate can be controlled.
  • the crystallization step in the present invention may be performed under normal conditions (temperature, holding time) that cause the crystallization of the inorganic fiber source, but the heat resistance temperature and the excellent elasticity particularly suitable for the holding material of the exhaust gas purification apparatus
  • the maximum firing temperature is preferably 1000 ° C. or more and 1300 ° C. or less, and the heating time is preferably 5 minutes or more and 120 minutes or less, and more preferably 5 minutes or more and 60 minutes or less. preferable.
  • the firing temperature is lower than 1000 ° C.
  • the heat resistance of the alumina fiber is lowered, and there is a fear that it is not suitable for the use temperature of the holding material of the exhaust gas purifying apparatus.
  • the temperature is higher than 1300 ° C.
  • crystallization of alumina fibers such as mullite may proceed excessively and the fiber strength may decrease.
  • the holding time at the maximum temperature is shorter than 5 minutes, crystallization does not proceed sufficiently, which may cause unevenness in the microstructure.
  • the holding time is longer than 120 minutes, the alumina fibers Crystal growth may proceed excessively. In either case, since the fiber strength is reduced, the shape restoring property of the alumina fiber continuous sheet is lowered.
  • the alumina fiber continuous sheet of the present invention produced through these steps is characterized by small variations in surface mass, and the variation in surface mass is preferably 10% or less, more preferably 5% or less. .
  • the alumina fiber continuous sheet of the present invention has a variation in friction coefficient of at least one surface of 10% or less.
  • the variation in the friction coefficient of at least one surface of the alumina fiber continuous sheet is larger than 10%, the holding force produced by using the alumina fiber continuous sheet is very high when installed in the catalytic converter. Part and very low part may occur. Further, there is a risk that the honeycomb carrier may be damaged at a portion where the holding force is very high, and the impact at the portion where the holding force is very low cannot be reduced due to insufficient holding force. May be damaged.
  • the variation in the friction coefficient of at least one surface of the alumina fiber continuous sheet is preferably 7% or less, and more preferably 5% or less.
  • the surface layer of the precursor fiber accumulation is not processed by slicing and smoothing with a slicing machine, at least one of the alumina fiber continuous sheets is not provided.
  • the variation in the friction coefficient of the surface cannot be reduced.
  • the surface layer of the precursor sheet of the alumina fiber precursor is smoothed by slicing with a slicing machine, so the friction coefficient of at least one surface of the alumina fiber continuous sheet
  • the variation in the size can be reduced.
  • the slice amount is 5% by mass or more, the variation in the friction coefficient can be 10% or less.
  • the alumina fiber continuous sheet of the present invention having a variation in friction coefficient of at least one surface of 10% or less is obtained by spinning a spinning stock solution mainly composed of an aluminum compound and a silicon compound to produce an alumina fiber precursor.
  • a step of obtaining a body (II) a step of depositing the alumina fiber precursor on a stacking device to form a precursor continuous sheet, and (III) a step of slicing and smoothing a surface layer of the precursor continuous sheet with a slicing machine (IV) an alumina fiber continuous sheet manufactured through the step of entanglement treatment by needling on the precursor continuous sheet, and (V) the step of firing the precursor continuous sheet, wherein the precursor It is an alumina fiber continuous sheet in which the slice amount when slicing the surface layer of the continuous sheet with a slicing machine is 5% by mass or more.
  • the alumina fiber continuous sheet of the present invention preferably has an average surface mass of 1350 g / cm 3 or more and a surface mass variation of less than 10%.
  • the average value of the surface mass of the alumina fiber continuous sheet is 1350 g / cm. Even in the case of 3 or more, the variation in the surface mass of the alumina fiber continuous sheet can be less than 10%.
  • the variation in the surface mass of the alumina fiber continuous sheet is more preferably 9% or less, and still more preferably 7% or less. More preferably, it is 5% or less.
  • the average value of the surface mass of the alumina fiber continuous sheet is more preferably 1400 g / cm 3 or more, and further preferably. and at 1450 g / cm 3 or more, further preferably 1500 g / cm 3 or more.
  • the surface mass of the alumina fiber molded product described in Patent Document 2 since the surface layer of the precursor fiber accumulation is not processed by slicing and smoothing with a slicing machine, the surface mass of the alumina fiber molded product is not increased. Even if the average value is less than 1350 g / cm 3 , the variation in the surface mass of the alumina fiber molded body cannot be less than 10%.
  • the average value of the surface mass of the alumina fiber molded body increases, the variation in the surface mass of the alumina fiber molded body also increases. Therefore, in the alumina fiber molded body described in Patent Document 2, the alumina fiber molded body When the average value of the surface mass of the body is 1350 g / cm 3 or more, it becomes more difficult to make the variation in the surface mass of the alumina fiber molded body less than 10%. Moreover, the average value of the surface mass of an alumina fiber continuous sheet and the variation in surface mass can be measured according to the method of the Example mentioned later.
  • Example 1 An aluminum oxychloride aqueous solution having an alumina solid content concentration of 20.0% by mass and colloidal silica having a silica concentration of 20.0% by mass are mixed so that the alumina component is 73% by mass and the silica component is 27% by mass. Furthermore, after mixing a partially saponified polyvinyl alcohol aqueous solution with a polymerization degree of 1700 and a solid content concentration of 10% by mass so as to be 8% with respect to the total solid content of the alumina component and the silica component, concentration under reduced pressure is performed. A spinning dope with a viscosity of 2000 mPa ⁇ s was prepared.
  • the spinning solution is made into a disc so that the discharge rate per hole is 25 mL / h from 300 0.2 mm ⁇ pores with a diameter of 350 mm. Then, the spinning solution was rotated at a peripheral speed of 47.6 m / sec, and the spinning dope was ejected radially from the holes. The stock solution jumping out from the pores was dried while suspended in hot air to obtain an alumina fiber precursor. This alumina fiber precursor was accumulated at a speed of 70 mm / min on a 1 m wide net conveyor of a method of sucking from the lower part to obtain a precursor continuous sheet.
  • a needling treatment was performed at a number of strikes of 30 strokes / cm 2 .
  • the conveyance speed of the precursor continuous sheet was 70 mm / min, and the angle formed by the blade of the slicing machine and the precursor continuous sheet was set to 5 °.
  • the surface mass, variation, and surface properties of the obtained alumina fiber continuous sheet were evaluated by the following methods.
  • the measuring method of the friction coefficient of an alumina fiber continuous sheet is demonstrated.
  • Ten samples of 7.6 cm ⁇ 7.6 cm were extracted from the obtained alumina fiber continuous sheet along the width direction of the alumina fiber continuous sheet to prepare 10 samples. Further, the sample extraction position is shifted in the machine direction of the alumina fiber continuous sheet, and 10 samples of 7.6 cm ⁇ 7.6 cm are extracted from the alumina fiber continuous sheet along the width direction of the alumina fiber continuous sheet. Ten more samples were prepared. This operation was repeated to produce a total of 100 samples. In addition, one side of each sample was parallel to the machine direction of the alumina fiber continuous sheet, and the other side was parallel to the width direction of the alumina fiber continuous sheet.
  • the obtained sample 42 was placed on a metal flat plate 41 (SUS304, surface treatment buffing # 400).
  • a 1155 g weight 43 was placed on the sample 42.
  • the pressure per unit area applied to the sample 42 by the weight 43 was 20 g / cm 2 .
  • the metal flat plate 41 is tilted so that the displacement amount of the inclination angle ⁇ of the metal flat plate 41 around the shaft 45 becomes 1 ° / second.
  • the angle ( ⁇ 1) at which the sample started to move was measured.
  • Examples 2 and 3 An alumina fiber continuous sheet was produced in the same manner as in Example 1 except that the type of the slicing machine was changed.
  • the slicing machines used are as follows.
  • Example 2 Band saw slicing machine (slicing machine that rotates a band-shaped blade at high speed)
  • Example 3 Roll cutter slicing machine (slicing machine for cutting by rotating a circular blade)
  • Examples 4 to 6 An alumina fiber continuous sheet was produced in the same manner as in Example 1 except that the angle between the blade of the slicing machine and the precursor continuous sheet was changed.
  • Examples 7 to 10, Comparative Example 1 Except for changing the slice amount, an alumina fiber continuous sheet was produced in the same manner as in Example 1, and the physical properties thereof were measured and shown in Table 1.
  • Examples 11 to 13 The surface mass of the alumina fiber continuous sheet was changed by adjusting the conveying conditions (conveying speed). Otherwise, an alumina fiber continuous sheet was produced under the same conditions as in Example 1. These physical property values were measured and are shown in Table 1.
  • an alumina fiber continuous sheet having a surface mass value of 1350 g / cm 3 or more and a small variation in the friction coefficient can be manufactured by adjusting the conveying conditions and the slice amount. By using this alumina fiber continuous sheet, the variation in the coefficient of friction of the holding material can be reduced.
  • the alumina fiber continuous sheet of the present invention can be used for the same use as before.
  • furnace materials for building furnace walls by the block lining method, stack lining method, etc. since the variation in surface mass is particularly small compared to conventional fibers, honeycombs and diesel parts for automobile exhaust gas purification catalytic converters.
  • It can be suitably used as a material for a holding material for fixing a honeycomb such as a honeycomb for a curate filter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Nonwoven Fabrics (AREA)
PCT/JP2017/038145 2016-10-28 2017-10-23 アルミナ質繊維連続シートの製造方法及びアルミナ質繊維連続シート WO2018079468A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780066757.2A CN109891014B (zh) 2016-10-28 2017-10-23 氧化铝质连续纤维片材的制造方法以及氧化铝质连续纤维片材
JP2018547646A JP7111620B2 (ja) 2016-10-28 2017-10-23 アルミナ質繊維連続シートの製造方法及びアルミナ質繊維連続シート

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JP2016211385 2016-10-28

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CN114057429A (zh) * 2021-11-30 2022-02-18 上海高铝氧新材料有限公司 一种超薄耐高温氧化铝/pva连续纤维片材及制备方法

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JP2003236739A (ja) * 2002-02-20 2003-08-26 Teijin Ltd 研磨基布
JP2006152474A (ja) * 2004-11-29 2006-06-15 Denki Kagaku Kogyo Kk アルミナ質繊維成形体の製造方法
JP2007299445A (ja) * 2006-04-28 2007-11-15 Kuraray Co Ltd 磁気記録媒体のテクスチャー加工方法
JP2009535143A (ja) * 2006-05-01 2009-10-01 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 切断装置及び毛髪切断器具
JP2012001638A (ja) * 2010-06-17 2012-01-05 Sony Chemical & Information Device Corp 熱伝導性シート及び熱伝導性シートの製造方法

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JPH10214610A (ja) * 1997-01-30 1998-08-11 Mitsubishi Paper Mills Ltd 非水電解液電池セパレーター用不織布
TWI610407B (zh) * 2010-06-17 2018-01-01 Dexerials Corp 導熱片及其製造方法
EP2915909B1 (en) * 2012-10-31 2020-10-14 Denka Company Limited Process for producing an alumina-based fibrous mass
JP2015168768A (ja) 2014-03-07 2015-09-28 三菱製紙株式会社 アルミナ樹脂複合体

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003236739A (ja) * 2002-02-20 2003-08-26 Teijin Ltd 研磨基布
JP2006152474A (ja) * 2004-11-29 2006-06-15 Denki Kagaku Kogyo Kk アルミナ質繊維成形体の製造方法
JP2007299445A (ja) * 2006-04-28 2007-11-15 Kuraray Co Ltd 磁気記録媒体のテクスチャー加工方法
JP2009535143A (ja) * 2006-05-01 2009-10-01 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 切断装置及び毛髪切断器具
JP2012001638A (ja) * 2010-06-17 2012-01-05 Sony Chemical & Information Device Corp 熱伝導性シート及び熱伝導性シートの製造方法

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