WO2006088189A1 - 管状物体及びその製造方法 - Google Patents
管状物体及びその製造方法 Download PDFInfo
- Publication number
- WO2006088189A1 WO2006088189A1 PCT/JP2006/302978 JP2006302978W WO2006088189A1 WO 2006088189 A1 WO2006088189 A1 WO 2006088189A1 JP 2006302978 W JP2006302978 W JP 2006302978W WO 2006088189 A1 WO2006088189 A1 WO 2006088189A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyimide
- fluorine resin
- tubular object
- layer
- tubular
- Prior art date
Links
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- 238000000034 method Methods 0.000 title abstract description 21
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- 239000004642 Polyimide Substances 0.000 claims abstract description 145
- 239000002243 precursor Substances 0.000 claims abstract description 90
- 239000002245 particle Substances 0.000 claims abstract description 62
- 238000002844 melting Methods 0.000 claims abstract description 32
- 230000008018 melting Effects 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims description 138
- 239000011347 resin Substances 0.000 claims description 138
- 239000011737 fluorine Substances 0.000 claims description 120
- 229910052731 fluorine Inorganic materials 0.000 claims description 120
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 119
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- 239000010410 layer Substances 0.000 claims description 76
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 30
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 30
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 claims description 19
- 150000004984 aromatic diamines Chemical class 0.000 claims description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 12
- 125000006158 tetracarboxylic acid group Chemical group 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 11
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims description 6
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 4
- JVERADGGGBYHNP-UHFFFAOYSA-N 5-phenylbenzene-1,2,3,4-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C(C(=O)O)=CC(C=2C=CC=CC=2)=C1C(O)=O JVERADGGGBYHNP-UHFFFAOYSA-N 0.000 claims description 4
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract description 15
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- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
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- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- OBKARQMATMRWQZ-UHFFFAOYSA-N naphthalene-1,2,5,6-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 OBKARQMATMRWQZ-UHFFFAOYSA-N 0.000 description 1
- KQSABULTKYLFEV-UHFFFAOYSA-N naphthalene-1,5-diamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1N KQSABULTKYLFEV-UHFFFAOYSA-N 0.000 description 1
- DOBFTMLCEYUAQC-UHFFFAOYSA-N naphthalene-2,3,6,7-tetracarboxylic acid Chemical compound OC(=O)C1=C(C(O)=O)C=C2C=C(C(O)=O)C(C(=O)O)=CC2=C1 DOBFTMLCEYUAQC-UHFFFAOYSA-N 0.000 description 1
- YTVNOVQHSGMMOV-UHFFFAOYSA-N naphthalenetetracarboxylic dianhydride Chemical compound C1=CC(C(=O)OC2=O)=C3C2=CC=C2C(=O)OC(=O)C1=C32 YTVNOVQHSGMMOV-UHFFFAOYSA-N 0.000 description 1
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- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
- G03G15/2057—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating relating to the chemical composition of the heat element and layers thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
-
- 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2009—Pressure belt
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2016—Heating belt
- G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/20—Details of the fixing device or porcess
- G03G2215/2003—Structural features of the fixing device
- G03G2215/2048—Surface layer material
-
- 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
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
Definitions
- the present invention relates to a tubular object made of a heat-resistant resin for heat-fixing an unfixed toner image in an image forming apparatus using an electrophotographic system such as a copying machine, a printer, and a facsimile machine.
- the present invention relates to a highly durable tubular body having a reduced coefficient of dynamic friction on the inner and outer surfaces thereof and a method for producing the same.
- Polyimide resin has excellent properties such as heat resistance, dimensional stability, mechanical properties, and electrical properties, and is used in a wide range of fields such as electronic and electrical equipment and insulating materials! It has been done.
- electrophotographic image forming apparatuses are used as many members in electrophotographic processes such as charging, photosensitivity, intermediate transfer and fixing.
- a polyimide tubular object used as a fixing member of an image forming apparatus will be described with an example.
- image forming apparatuses such as copying machines and laser beam printers
- the toner image on a sheet-like transfer material such as paper is heated and melted and fixed on the transfer material in the final stage of printing or copying.
- the heater substantially directly heats the toner through a polyimide tubular object (fixing belt) having an extremely thin film-like film, so that the heating unit instantaneously reaches a predetermined fixing temperature and supplies power.
- a polyimide tubular object fixing belt
- the heating unit instantaneously reaches a predetermined fixing temperature and supplies power.
- the fixing device includes a rotatable fixing roll 54 having a drive source having a heat source 55, a pressure belt 51 (polyimide resin tubular object) pressed against the roll, and the pressure belt.
- the pressing node 53 and the pressing guide 52 are arranged on the inner side of the fixing roller.
- the pressing belt is pressed against the surface of the fixing roll, and the pressing belt is rotated by the driving force of the fixing roll.
- the copy paper 57 on which toner images are formed is sequentially fed and the toner image 56 is heat-fixed on the surface of the fixing roll.
- the polyimide resin tubular body used in these applications is generally formed from a polyimide precursor solution obtained by reacting tetracarboxylic dianhydride and diamine in a polar polymerization solvent, and imidized. It can be obtained from Kotoko.
- Patent Documents 5 to 6 a method for producing a tubular body from the polyimide precursor solution is obtained by molding a polyimide precursor solution with a predetermined thickness on the outer surface or inner surface of a molding die. After that, a method has been proposed in which imidization is completed by heating or chemical separation and separation from a mold to obtain a tubular object.
- the fixing belt or pressure belt has a two-layer structure in which a release layer such as fluorine resin is formed on the outer surface of the polyimide tubular object (the surface in contact with the toner), or the polyimide tubular object and the fluorine resin layer.
- a three-layer belt with a primer layer to improve adhesion is used.
- OA equipment is a fixing belt to meet such demands for miniaturization and high speed.
- the dynamic friction coefficient of the inner surface is low as well as the releasability of the outer surface of the belt. Or high characteristics such as thermal conductivity are required.
- the fixing belt shown in FIG. 6 or the pressure belt shown in FIG. 7 is a pressure roll having a driving source or a mechanism that is transmitted and rotated by the fixing roll.
- a roll having a drive source and a belt come into direct contact with such a mechanism, the rotational force of the drive roll is transmitted to the belt as it is and rotates relatively smoothly.
- the rotational force to the belt is transmitted to the belt via the drive roll force transfer paper. Slip is likely to occur on the surface of the transfer paper and belt.
- the outermost layer of the fixing or pressure belt has adhesion of molten toner (offset phenomenon).
- offset phenomenon molten toner
- a release layer such as fluorine resin is laminated, the coefficient of dynamic friction is low, and the slip is more likely to occur as the copying machine or printer becomes faster.
- the release layer on the belt surface is worn by the copy paper due to repeated small slips on the copy paper and the belt surface. The surface of the layer becomes rough, causing an offset.
- polyimide resin and fluorine resin laminated on the outer surface have a low thermal conductivity and a multi-layer structure. It has become.
- Patent Documents 7 to 9 have been proposed.
- Patent Document 7 the inner surface of a polyimide tubular object is roughened to hold a lubricant.
- a polyimide resin is added with a heat conductive inorganic filler and a fluorine resin powder such as polytetrafluoroethylene, heated at 250 ° C, and then coated on the outer surface with a fluorine resin to form a film. ing.
- a polyimide precursor added with fluorine resin powder is applied to the inner peripheral surface of a cylindrical mold and spread, and heated to cause a curing reaction.
- Patent Documents 7 to 9 of the above-mentioned conventional proposals all aim to reduce the frictional resistance of the inner surface of the tubular object, and the surface in contact with the paper on the surface layer is a fluorine-resin layer of conventional strength.
- the force of adopting the release layer as it is or not improved.
- it has a two-layer structure with a polyimide tubular body and a fluorine resin release layer, or a three-layer structure with a primer layer between the polyimide layer and the fluorine resin layer, especially when used in the fixing device of FIG. Therefore, the thickness is thick and the thermal conductivity is reduced.
- the manufacturing method requires three different raw materials and three different processes, making the manufacturing process cumbersome and between the layers formed of each material. There was also a problem with adhesion.
- Patent Document 1 JP-A-7-178741
- Patent Document 2 Japanese Patent Laid-Open No. 3-25471
- Patent Document 3 Japanese Patent Laid-Open No. 6-258969
- Patent Document 4 Japanese Patent Laid-Open No. 11-133776
- Patent Document 5 JP-A-6-23770
- Patent Document 6 Japanese Patent Application Laid-Open No. 1-156017
- Patent Document 7 Japanese Patent Laid-Open No. 2001-341143
- Patent Document 8 Japanese Patent Laid-Open No. 2001-040102
- Patent Document 9 Japanese Patent Laid-Open No. 2001-056615
- the present invention solves the problem of the conventional example, and the inner surface of the tubular object has low friction resistance, and at the same time, the outer surface of the tubular object has sufficient releasability as a fixing belt and a pressure belt and is durable.
- a tubular object and a method for manufacturing the same are provided.
- the tubular object of the present invention is a tubular object obtained by molding and heat-curing a mixture containing polyimide and fluorocoagulant particles, and at least a part of the fluorocoagulant particles present in the vicinity of the surface layer of the tubular object. Is characterized by being melt-flowed and deposited on the outer surface or inner / outer surface of the tubular body, and forming a fluoro-resin film partially or entirely.
- a mixed solution of a polyimide precursor solution and melt-flowing fluorine resin particles is applied to the outer surface of a mold, cast-molded to a predetermined thickness, heated to imidize, By setting the maximum temperature of the imidizer to a temperature exceeding the melting point of the fluorine resin, and separating the mold and the tubular object after cooling, at least a part of the fluorine resin present in the vicinity of the surface layer of the tubular object is obtained.
- the particles are melt-flowed and deposited on the outer surface or inner / outer surface of the tubular body, and a fluorine resin film is formed partially or entirely.
- FIG. 1 is a schematic cross-sectional view of a tubular object before completion of imidation in one embodiment of the present invention.
- Fig. 2 is a schematic cross-sectional view of a tubular object after completion of imido in one embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional view showing film formation when FEP is added in one example of the present invention.
- FIG. 4 is a schematic cross-sectional view showing a comparative formation when FEP and PTFE are mixed and added in an example of the present invention.
- FIG. 5 is a cross-sectional view showing a cast molding method in one embodiment of the present invention.
- FIG. 6 is a schematic sectional view showing a laser beam printer fixing device used in one embodiment of the present invention.
- FIG. 7 is a schematic cross-sectional view showing a laser beam printer fixing device used in another embodiment of the present invention.
- FIG. 8 is a cross-sectional view showing a casting method according to another embodiment of the present invention.
- FIG. 9 is a photomicrograph of the outer surface of the polyimide tubular object in Example 1 of the present invention.
- FIG. 10 is a photomicrograph of the inner surface of the polyimide tubular object in Example 1 of the present invention.
- FIG. 11 is a photomicrograph of the outer surface of a polyimide tubular object in Example 5 of the present invention.
- FIG. 12 is a schematic cross-sectional view showing a dynamic friction coefficient measuring apparatus used in one example of the present invention.
- the basic components of the tubular body of the present invention are polyimide and fluorocoagulant particles. There is no compatibility between the polyimide and the fluorinated resin particles, and the fluorinated resin melts and precipitates on the outer surface or inner and outer surfaces of the polyimide tubular body, and the melted and precipitated surface forms a film that flows on the surface.
- the surface of the fluororesin coating has a granular pattern caused by the fluororesin particles. This is observed in the form of fine bubbles on the surface, with some of the fluorocoagulant particles remaining.
- the fluororesin particles include polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkyl butyl ether copolymer (PFA), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene.
- PTFE polytetrafluoroethylene
- PFA tetrafluoroethylene-perfluoroalkyl butyl ether copolymer
- PCTFE polychlorotrifluoroethylene
- tetrafluoroethylene tetrafluoroethylene
- it is at least one fluorine resin selected from fluoroethylene monohexafluoropropylene copolymer (FEP) and tetrafluoroethylene ethylene copolymer (PETFE).
- Fluorine resin deposited on the surface of the tubular body is thermally flowed to form a fluorine resin film
- thermoplastic fluorine resin such as PFA and FEP is preferred.
- fluorocarbon resins flow at a temperature equal to or higher than the melting point, and can be formed as a film-like film on the inner and outer surfaces of the tubular object.
- the inner and outer surfaces of the tubular object are in the state of polyimide in the sea state.
- Such a structure is optimal for applications such as an intermediate transfer belt used in an image forming apparatus.
- the transfer belt is a belt that is used for the purpose of intermediately transferring a toner image from a photosensitive member and then retransferring the toner image onto a copy paper.
- the toner powder remaining slightly on the surface is scraped off and removed with a blade, the sliding resistance with the blade is low and the structure is preferable.
- the polyimide used in the present invention is a thermosetting resin, and a mixed solution of a polyimide precursor solution and a fluorine resin is cast on, for example, the outer surface or the inner surface of a mold, dried and heated, and imidized.
- a polyimide 'fluorine-resin composite tubular object in which fluorine resin is deposited on at least the outer surface or the inner and outer surfaces of the tubular object.
- fluorine resin easily melts and precipitates on the surface where the coating is in contact with air. That is, the fluorinated resin powder exists in a mixed and dispersed state in the polyimide precursor solution.
- the polyimide resin solution obtained by imidizing the aromatic tetracarboxylic dianhydride and the polyimide precursor solution also having an aromatic diamine power has a large thermal contraction rate in order to melt and precipitate fluorine resin.
- the polyimide precursor solution was cast on a glass plate, dried, heated to 300 ° C in steps, and then progressed through W, then the polyimide film was peeled off from the glass plate after cooling, and the fluorine was removed from 300 ° C.
- the heat shrinkage rate is large when heated to a temperature higher than the melting point of the resin, for example, 400 ° C, and the fluorine resin easily melts and precipitates in the polyimide.
- the thermal contraction rate was measured using “TMA-50” manufactured by Shimadzu Corporation.
- the polyimide film was cast on a glass plate with a polyimide precursor solution with the above monomer strength so that the thickness upon completion of imidization was 50 ⁇ m, dried at a temperature of 150 ° C for 40 minutes, and then at 200 ° C. 40 minutes, Sarako 20 minutes at 250 ° C, 20 minutes at 300 ° C A polyimide film was prepared.
- This film was cut into a strip shape having a length of 10 mm and a width of 3.5 mm, and a load of 2. Og was applied to one of the films, and the film was attached to "TMA-50". The state of heat shrinkage was observed from room temperature to 400 ° C at a heating rate of 10 ° CZ, and the heat shrinkage rate at 400 ° C was also calculated for 300 ° C force.
- the phenomenon in which fluorine resin is deposited on the inner and outer surfaces of the tubular body of the present invention is that the melting point of the fluorine resin, the imidization temperature of the polyimide precursor, etc. are selected and set to predetermined conditions. This makes it possible to deposit fluorine resin on both surfaces of the tubular object.
- the tubular object of the present invention may be a single layer or may be formed in multiple layers as necessary.
- the inner layer does not contain fluorine resin particles, or the abundance of the inner layer can be relatively less than that of the outer layer to form a polyimide layer, which can further improve the mechanical properties of the tubular object. it can.
- the type of polyimide resin can be multilayered by changing the mixing amount of fluorine resin.
- the temperature during the imide reaction can be controlled to melt and precipitate fluorine resin only on the outer surface of the tubular object. There is also a force that may be required to improve the frictional property only on the surface of the outer layer, such as in an intermediate transfer belt.
- the fluorine-resin mixed polyimide precursor solution includes boron nitride, potassium titanate, My strength, titanium oxide, talc, calcium carbonate, aluminum nitride, alumina, silicon carbide, silicon, silicon nitride, silica, graph Heat conductive fillers such as eye, carbon fiber, metal powder, beryllium oxide, magnesium and magnesium oxide can be added. Addition of these heat conductive fillers is preferable because the thermal conductivity of the tubular object coating is improved and high-speed fixing can be supported.
- the fluorine resin can be used alone or in combination with fluorine resin such as PTFE, PFA, FEP, CPTFE.
- fluorine resin such as PTFE, PFA, FEP, CPTFE.
- PTFE, PFA and FEP are preferable materials that have excellent heat resistance and releasability and can be used in the present invention.
- fluorine A conductive material such as carbon black, carbon fiber, metal powder, or an antistatic agent can be added to the combined polyimide precursor solution.
- the mixing amount of the fluorine resin is preferably set to 10 to 90% by mass with respect to the solid content of the polyimide precursor solution. Especially preferably, it is 20-80 mass%.
- the above-mentioned fluorocob is a preferable form in which a powdery one is easily mixed, and the average particle diameter is preferably in the range of 0.1 to 100 / ⁇ ⁇ . A more preferable average particle diameter is in the range of 0.5 to 50 m. Within such a range, it is preferable because the particles can be dispersed uniformly with little aggregation.
- the average particle size of the fluorinated resin powder is measured by a laser diffraction particle size analyzer (ASLD-2100: manufactured by Shimadzu Corporation) or a laser diffraction Z scattering particle size distribution analyzer (LA-920: Horiba). (Manufactured by Seisakusho Co., Ltd.).
- the mixed solution is filtered through a filter. It is preferable to remove coarse particles of sallow particles.
- the tubular body of the present invention is a tubular body mainly composed of polyimide, and is obtained by mixing a fluorine resin and a polyimide precursor solution, casting them seamlessly, and then heating imidization.
- the polyimide precursor solution can be obtained by reacting approximately equimolar amounts of aromatic tetracarboxylic dianhydride and aromatic diamine in an organic polar solvent.
- Typical examples of the aromatic tetracarboxylic dianhydride include 3, 3 ', 4, 4' ben Zophenone tetracarboxylic dianhydride, pyromellitic dianhydride, 2, 3, 3 ', 4-biphenyl tetracarboxylic dianhydride, 3, 3', 4, 4'-biphenyl tetracarboxylic dianhydride Anhydrous, 1, 2, 5, 6 Naphthalene tetracarboxylic dianhydride, 1, 4, 5, 8 Naphthalene tetracarboxylic dianhydride, 2, 3, 6, 7 Naphthalene tetracarboxylic dianhydride, 2, 2 'bis (3,4-dicarboxyphenyl) propane dianhydride, perylene 3, 4, 9, 10- tetracarboxylic dianhydride, bis (3,4-dicarboxyphenyl) ether Anhydride, bis (3,4-dicarboxyphenyl) sulfon-
- aromatic diamine examples include 4,4'-diaminodiphenyl ether, p-phenylenediamine, m-phenylenediamine, 1,5 diaminonaphthalene, 3,3'dichloro.
- Mouth Benzidine 3, 3 '— Diaminodiphenylmethane, 4, 4'-Diaminodiphenylmethane, 3, 3' — Dimethyl-4,4'-biphenyldiamine, 4, 4'-Diaminodiphenylsulfide 1, 3'-Diaminodiphenyl Sulfone, benzidine, 3, 3 '— dimethylbenzidine, 4, 4' — diaminophenylsulfone, 4, 4 '— diaminodiphenylpropane, m xylylenediamine, hexamethylenediamine, diamino Propyltetramethylene, 3-methylheptamethylenediamine, and the like.
- aromatic tetracarboxylic dianhydrides and aromatic diamines can be used alone or in combination. It is also possible to complete the polyimide precursor solution and use it by mixing these precursors.
- a combination of biphenyl tetracarboxylic dianhydride and para-phenylenediamine is preferable.
- the polyimide obtained with this precursor strength has a rigid polymer structure and can easily extrude the fluorine resin at the melting temperature of the fluorine resin.
- Examples of the organic polar solvent for reacting the aromatic tetracarboxylic dianhydride and the aromatic diamine include N-methyl-2-pyrrolidone, N, N dimethylformamide, N, N dimethylacetamide, N, N jetylformamide N, N jetylacetamide, dimethyl sulfoxide, hexamethyl phosphortriamide, pyridine, dimethyltetramethylene sulfone, tetramethylene sulfone and the like.
- These organic polar solvents can be mixed with phenol, xylene, hexane, toluene and the like.
- the polyimide precursor solution is obtained by reacting the aromatic tetracarboxylic dianhydride and the aromatic diamine in an organic polar solvent, usually at 90 ° C or lower, and the solid solution in the solvent.
- the concentration can be set according to the final polyimide tubular object specifications and processing conditions, but is 10-30% by mass.
- the viscosity of the solution increases depending on the polymerization state, but when used, it is diluted to a predetermined viscosity.
- the temperature at which the fluorine resin layer can be deposited on at least the outer surface of the tubular body needs to be heated to a temperature exceeding the melting point of the fluorine resin. It is preferable that the imidization is completed at a maximum temperature of imidization that is at least 10 ° C higher than the melting point of the mixed fluorine resin.
- the heating time required for precipitating the fluorine resin on the inner and outer surfaces of the tubular body is a time within 30 minutes after the maximum temperature of the imido resin reaches a temperature exceeding the melting point of the fluorine resin. It is preferable that If the heating time is longer than 30 minutes, the thermal decomposition of fluorine resin and the mechanical properties of polyimide may be reduced.
- the tubular object of the present invention can be obtained, for example, by the following method. Apply a fluororesin mixed polyimide precursor solution to the mold surface of a predetermined outer diameter (diameter corresponding to the inner diameter of the tubular object), cast using a die on the outside, lead to a heating device, 100-150 The polymerization solvent is dried at a relatively low temperature of ° C, and then the imidization reaction proceeds. Finally, the imidization is completed by heating for a predetermined time at a temperature exceeding the melting point of the fluorine resin. Thereafter, the tube is cooled and the tubular object is removed from the mold.
- a fluorine precursor (PTFE) powder is mixed with a polyimide precursor solution, cast-molded, and a schematic enlarged cross section of the tubular object 10 when the polyimide imidization temperature is 300 ° C.
- Figure 1 shows the figure. Up to this stage, the fluorine resin powder 12 is dispersed inside the polyimide film layer 11, and the surface layer is almost covered with the polyimide layer. At this stage, the water contact angle is also low. 15 is a mold.
- Fig. 3 is a schematic enlarged cross section of a tubular object when only FEP (melting point 260 ° C) particles are mixed alone with the polyimide precursor solution, cast molding, and the polyimide imidizing temperature is 400 ° C. It is a figure.
- the FEP powder 22 is dispersed inside the polyimide film layer 21, and FEP melts and flows out on the outer surface layer surface to form a fluororesin coating 23 partially or entirely.
- 30 is FEP resin melt-deposited on the inner surface. 28 is a mold.
- FIG. 4 shows a mixture of PTFE (melting point: 327 ° C) particles and FEP (melting point: 260 ° C) particles in a ratio of 50:50, cast molding, and polyimide imidization temperature of 400 ° C.
- FIG. 2 is a schematic enlarged cross-sectional view of a tubular object when C is used.
- the FEP powder 22 and PTFE powder 24 are dispersed inside the polyimide film layer 21, and FEP and PTFE are melt-flowed and deposited on the surface layer, and a fluororesin coating (23, 25) is applied partially or entirely.
- Forming. 28 is a mold.
- the fluorine resin particles present in the vicinity of the surface layer of the tubular object is melted and precipitated on the outer surface or the inner and outer surfaces of the tubular object. Since the coated film is formed integrally and fluidized on the surface of the tubular object, the dynamic friction coefficient of the inner surface of the tubular object is low, and the outer surface of the tubular object is also formed of a fluorine resin film.
- the fixing member of an image forming apparatus can be a transfer belt, or an intermediate transfer / heat fixing belt. Can be used for etc.
- a mixed solution obtained by adding fluorine resin particles to the polyimide precursor solution is applied to the outer surface or inner surface of the molding die, cast-molded to a predetermined thickness, heated to imidize, and the maximum temperature for imidization is increased.
- the temperature is set to exceed the melting point of the fluorine resin, at least a part of the fluorine resin particles present in the vicinity of the surface layer of the tubular object can be melted and deposited on at least the outer surface of the tubular object.
- Molded products with a structure in which fluorine resin is melted and precipitated on one or both sides of a polyimide substrate are heat resistant sliding materials and release films in the form of films, or fluorine It has the chemical stability of fat and the mechanical properties of polyimide, and can be suitably used in the field of medical applications and various medical tubes inserted into the body.
- biphenyltetracarboxylic dianhydride is "BPDA
- PPD Para-phenylenediamine
- PM pyromellitic dianhydride
- DA 4, 4, 1-diaminodiphenyl ether is abbreviated as “ODA”, and N-methyl-2-pyrrolidone is abbreviated as “NMP”.
- a test film 62 having a width of 80 mm and a length of 200 mm was fixed on a horizontal table 64.
- a test film 62 fixed to a size of 63 mm in width and 63 mm in length (area 40 cm 2 ) is stacked on top of it, and a test film 61 of the same material as that of the test film 62, and further 63 mm in width and 63 mm in length (area 40 cm 2 )
- a weight 63 with a weight of 200 g was placed, the stacked test films were slid horizontally at a speed of lOO mmZ, the load (dynamic friction force) was measured, and the dynamic friction coefficient was calculated by the following formula.
- 65 is a wire
- 66 is a pulley
- 67 is a tension tester load cell, and is wound in the Z direction.
- PPD39 parts by mass with 100 parts by mass of BPDA dissolved in NMP in a flask The polyimide precursor solution was obtained by reacting at a temperature of 23 ° C. with stirring for 6 hours.
- the rotational viscosity of this polyimide precursor solution was 1200 boise.
- the rotational viscosity is a value measured with a B-type viscometer at a temperature of 23 ° C.
- PTFE powder having an average particle size of 3.0 ⁇ m (melting point: 327 ° C., trade name “Zonyl MP1100” manufactured by DuPont) was added to the polyimide precursor solution with respect to the solid content in the polyimide precursor solution.
- the surface of an aluminum mold having an outer diameter of 24 mm and a length of 500 mm was coated with an oxide coating material by a dubbing method and baked to coat the oxide film.
- a ring-shaped die 2 having an inner diameter of 25 mm is formed.
- the cast film 3 having a thickness of 500 m was formed on the surface of the mold by being inserted and run from the upper part of the mold.
- each mold 1 is placed in an oven at 120 ° C, dried for 60 minutes, heated to 200 ° C for 40 minutes, held at that temperature for 20 minutes, and 250 as the final imidation treatment. After heating at a temperature of 10 ° C for 10 minutes, the temperature was raised to a temperature of 400 ° C in 15 minutes, heating at the same temperature for 10 minutes to complete imidization, cooling to room temperature (25 ° C), gold The tubular object was removed from the mold.
- the thickness of the obtained tubular object was 55 ⁇ m, and both ends were cut to obtain a tubular object having a length of 240 mm (A4 size) and an inner diameter of 24 mm.
- Table 1 shows the measurement results of the dynamic friction coefficients of the inner and outer surfaces of this tubular object.
- Fig. 9 shows a photograph of the external surface observed with a digital microscope (VHX-100, manufactured by Keyence Corporation) at a magnification of 1000 times. The part of the outer surface that appears white and spotted is PTFE resin particles, and is a partial force FEP resin that precipitates in a state of flowing around it. As a whole, it can be confirmed that the coating surface of the fluorine resin has a granular pattern due to the fluorine resin particles.
- Fig. 10 shows the same picture of the inner surface of this tubular object. The black spots are the PTFE resin deposits, and the white parts around the FEP resin melt and flow.
- a polyimide tubular body was obtained under the same conditions as in Example 1 except that the fluorine resin powder was not mixed with the polyimide precursor solution under the conditions of Example 1.
- Table 1 below shows the measurement results of the dynamic friction coefficient of the inner surface of this tubular object.
- the FEP powder (trade name “532-8110” manufactured by DuPont) with an average particle size of 35 m was added to the polyimide precursor single solution prepared in Example 1 as a fluorine resin powder.
- the mixture was added and mixed so as to have a proportion of 23% by mass with respect to the solid content of the above, and a fluorine resin mixed polyimide precursor solution was prepared.
- a polyimide precursor solution was applied to the surface of the mold in the same manner as in Example 1, cast, and imidized in the same manner as in Example 1.
- the final imidizing treatment was performed at a temperature of 250 ° C. After heating at 100 ° C. for 10 minutes, the temperature was raised to 300 ° C. in 5 minutes, heated at 350 ° C. for 15 minutes, and cooled to obtain a polyimide tubular body.
- Table 1 shows the measurement results of the dynamic friction coefficient of this tubular body. Also, 10 images can be fixed per minute as shown in Fig. 6. As a result of fixing the image as a fixing belt of a laser beam printer, a good image was obtained.
- 31 is a fixing belt (polyimide resin tubular body)
- 32 is a belt guide
- 33 is a ceramic heater
- 34 is a pressure roll having a driving source
- 35 is a thermistor
- 36 is a core metal of the pressure roll
- 37 is a copy paper
- 38 is a toner image before fixing
- 39 is a toner image after fixing
- N is a minus point.
- the PFA resin powder (product name: PFA manufactured by Mitsui DuPont Fluoro Chemical Co., Ltd.) having an average particle size of 28 ⁇ m as a fluorine resin powder was added to the polyimide precursor single-unit solution prepared in Example 1 BPDAZPPD. Only MP102) was added and mixed at a ratio of 24% by mass with respect to the solid content in the polyimide precursor solution to prepare a fluorine resin mixed polyimide precursor solution.
- Example 2 Thereafter, a mold surface polyimide precursor solution was cast and molded in the same manner as in Example 1 and treated at a maximum temperature of imidization at 400 ° C. under the same conditions as in Example 1 to obtain a polyimide tubular body. However, a mold having an outer diameter of 30 mm was used as the mold.
- Table 1 shows the measurement results of the dynamic friction coefficient of this tubular object.
- 51 is a pressure belt
- 52 is a pressure guide
- 53 is a pressure pad
- 54 is a fixing roll
- 55 is a heat source
- 56 is a toner image before fixing
- 57 is a copy paper.
- a polyimide precursor solution was liquid molded on the surface of the mold. Then, it is dried in an oven at 120 ° C for 60 minutes, heated to 200 ° C in 20 minutes, heated at the same temperature for 20 minutes, and heated at 250 ° C for 10 minutes as the final imidization treatment, The temperature was raised to 400 ° C in 10 minutes, heated at 400 ° C for 10 minutes, and cooled to obtain a polyimide tubular body.
- Table 1 shows the measurement results of the dynamic friction coefficient of this tubular object.
- Example 1 Same as Example 1 except that the final imid temperature was changed to 250 ° C under the conditions of Example 1. A polyimide tubular body was obtained under the conditions. Table 1 shows the measurement results of the dynamic friction coefficient of the inner and outer surfaces of this tubular body.
- the fluororesin mixed polyimide precursor solution prepared in each example and each comparative example was cast to a thickness of 80 ⁇ m on a 300 mm mD (length: 300 mm, width: 300 mm) glass plate.
- the imidizers were completed at the maximum imidization temperature shown in Table 1 to obtain a polyimide film.
- Table 1 shows the results of measuring the contact angle of each film against pure water.
- the molding slit is formed into a discharge slit head 70 having a discharge slit opening width of 1.4 mm with an inner diameter of 230.2 mm of the discharge slit portion 72 of the polyimide precursor. Attached to.
- an aluminum mold with an outer diameter of 229 mm and a length of 500 mm was prepared as a mold 71, and the mold surface was coated with a key oxide coating agent by the date pinning method, baked, and coated with a key oxide film.
- the average surface roughness of the mold was (Rz) 2.2 ⁇ m.
- PTFE powder having an average particle size of 3.0 ⁇ m (melting point: 327 ° C., trade name “Zonyl MP 1100”) manufactured by DuPont was added to the polyimide precursor simple substance solution made of BPDAZPPD prepared in Example 1. It was added to a solid content in the polyimide precursor solution at a ratio of 23% by mass, stirred and dispersed uniformly. After that, coarse foreign matters were filtered using a 250 mesh stainless steel wire mesh to prepare a PTFE powder mixed polyimide precursor solution.
- the PTFE powder mixed polyimide precursor solution was further added to acidic carbon black (trade name “MA78” manufactured by Mitsubishi Chemical Corporation), DBP absorption: 70 cm 3 , specific surface area 100 m 2 volatile matter per Zg: 2 6 wt%) was added to 14.5 mass% of the polyimide resin, and a polyimide precursor was prepared by mixing and dispersing the three components of polyimide, PTF E, and carbon black.
- acidic carbon black trade name “MA78” manufactured by Mitsubishi Chemical Corporation
- the PTFE mixed precursor solution 74 is charged into the storage tank 73, the slurry pump 77 is rotated, a predetermined amount of the polyimide precursor solution is distributed to 24 locations by the branch unit 78, and pipes 79, 80 ( The other pipes (not shown) were connected to the pipe connector of the discharge slit head 70 and were pumped to the opening of the discharge slit.
- the mold is raised vertically in the direction of arrow Y, and the position force of 50 mm downward from the top of mold 71 is passed through the discharge slit.
- the polyimide precursor solution 81 was pumped from the slurry pump 77, and the polyimide precursor solution 81 having a thickness of 600 ⁇ m was cast on the outer surface of the mold 71.
- 75 is a liquid feeding pipe, and 76 is a valve.
- the pumping speed of the slurry pump 77 and the rising speed of the mold 71 were calculated in advance from data such as the viscosity of the polyimide precursor solution, the outer diameter of the mold 71, and the liquid molding thickness, and predetermined conditions were set.
- the pumping from the slurry pump was stopped, and liquid molding was completed on the surface of the mold 71 with a length of about 400 mm. Thereafter, the mold was placed in an oven as it was, dried at 120 ° C. for 60 minutes, heated to 200 ° C. over 40 minutes, and held at that temperature for 20 minutes. Next, heat up to 300 ° C in 20 minutes, hold for 30 minutes, further heat up to 340 ° C in 15 minutes, and heat at that temperature for 20 minutes. Demolded to produce a polyimide resin tubular body.
- the thickness of this tubular object is, and the volume resistivity at an applied voltage of 500 v is 1.1.
- FIG. 11 shows an observation photograph of the outer surface of the tubular object with a digital microscope (VHX-100 manufactured by Keyence Corporation) at a magnification of 1000 times. It can be confirmed that the white spots appear to be PTFE resin particles and have a granular pattern due to the fluorine resin particles.
- Table 1 shows the measurement results of the dynamic friction coefficient and the contact angle of this tubular object.
- this tubular object as an intermediate transfer belt for a full-color tandem laser beam printer, the color toner image formed on the belt surface is transferred to copy paper, and then the toner remaining on the transfer belt is removed by a urethane rubber blade.
- the remaining toner having a low sliding resistance between the blade and the surface of the transfer belt can be surely removed, and a clear image and sufficient durability can be obtained.
- a reliable rotation can be transmitted between the driving rolls arranged on the inner surface of the transfer belt without slipping, and the image blurring is not disturbed. Was able to be prevented.
- the volume resistivity is measured according to the method of JIS C2151, digital super high resistance / micro ammeter R83 manufactured by Advantest. Measurement was performed using 40 / R8340A with an application time of 30 seconds.
- Boron nitride powder (Mitsui Chemicals Co., Ltd. MBN-010T) was mixed with the polyimide precursor simple solution having BPDAZPPD force prepared in Example 1 in an amount of 30% by mass based on the solid content concentration of the polyimide precursor solution.
- a boron nitride powder mixed polyimide precursor solution was prepared.
- V apply to the surface of the mold used in Example 1 using a ring die so that the film thickness after imidization is 35 ⁇ m, cast mold, dry at 120 ° C and 250 ° C.
- the intermediate treatment of imido was carried out at a temperature, and the first layer of a tubular object made of a polyimide film mixed with boron nitride powder was formed.
- SP-Powdered PTFE manufactured by CORPORATION
- CORPORATION carbon fiber
- VGCF-H manufactured by Showa Denko KK
- foreign matters were filtered using a 250 mesh stainless steel wire mesh to prepare a fluorine resin powder and a carbon fiber mixed polyimide precursor solution.
- the film thickness after imidization of the fluororesin powder and carbon fiber mixed polyimide precursor solution prepared in (2) above on the surface of the first layered tubular object manufactured in (1) above is 20 ⁇ m.
- a primary imidizing treatment is performed at a temperature of 250 ° C, and the temperature is further raised to a temperature of 400 ° C in 15 minutes. Heating at the same temperature for 20 minutes to complete imidization, a two-layer polyimide tubular body having an inner layer in which boron nitride powder is mixed with polyimide and an outer layer in which fluorine resin powder and carbon fiber are mixed in polyimide Got.
- the tubular body had an inner diameter of 24 mm and a total thickness of 54 ⁇ m, and the first and second layers were firmly bonded by imido and could not be peeled off.
- the mixed fluorine resin is melted and deposited on the outer surface of the tubular object. It had excellent releasability and low frictional properties of fluorine resin.
- Table 1 shows the measurement results of the dynamic friction coefficient of the inner and outer surfaces of this tubular body.
- This tubular object has a structure in which the first layer and the second layer of force S imidi are integrated.
- the first layer (inner layer) has the mechanical properties required for a tubular object, and the second layer (outer layer). In this case, a large amount of fluorinated resin was melted and deposited, and a release layer having a sufficient thickness was obtained, resulting in excellent durability.
- the thermal conductivity in the thickness direction of the tubular body is improved by the boron nitride mixed in the first layer and the carbon fiber mixed in the second layer, and at the same time, the fluorine resin layer deposited on the outermost layer.
- the surface resistance of the printer is 800 ⁇ Z port, which can fix 14 sheets per minute. As a result of fixing the image as a fixing belt of the laser single-beam printer shown in Fig. 6 was gotten.
- Example 1 To the polyimide precursor simple substance solution prepared in Example 1 such as BPDA / PPD, PTFE powder having an average particle size of 3.0 m (melting point: 327 ° C., trade name “Zonyl” manufactured by DuPont)
- Example 3 S35 m The thickness of the film after imidization using a ring die on the surface of the mold used in Example 3 S35 m was applied, cast-molded, dried at 120 ° C., and subjected to an intermediate treatment for imidization at a temperature of 250 ° C. to form a first-layer coating comprising the mixed solution.
- Fluorine soot prepared in the above item (2) is applied to the surface of the first layer tubular object manufactured in the above item (1).
- the film is cast using a ring die and dried at a temperature of 120 ° C.
- the primary imidization treatment was performed at a temperature, and the temperature was further increased to 400 ° C in 15 minutes, followed by heating at the same temperature for 20 minutes to complete imidization, and the same as the inner layer in which fluorine resin was mixed with polyimide.
- a two-layered polyimide tubular body having an outer layer in which a polyimide resin powder and carbon fiber were mixed together was obtained.
- This tubular body had an inner diameter of 24 mm and a total thickness of 55 ⁇ m, and the first and second layers were firmly bonded by imido.
- fluorine resin is melted and deposited on the outer surface and inner surface of the tubular body, and the mold release property of the fluorine resin is excellent and low!
- Has friction characteristics! Table 1 shows the measurement results of the dynamic friction coefficient of the inner and outer surfaces of this tubular object.
- the surface resistance of the fluororesin layer deposited on the outermost layer of this tubular object is 815 ⁇ , and it was used as a pressure belt for a laser beam printer equipped with the fixing device shown in Fig. 7. A good image was obtained without any occurrence.
- the tubular body of the present invention had a low coefficient of dynamic friction and a low contact angle of the film-like molded product. Moreover, it was confirmed from the observation result by an electron micrograph that fluorine resin was deposited on the surface of the polyimide tubular body. In addition, as a fixing belt for laser beam printers and image fixing, good images can be obtained.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP06714118A EP1852751A1 (en) | 2005-02-21 | 2006-02-20 | Tubing and process for production thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-044426 | 2005-02-21 | ||
JP2005044426 | 2005-02-21 |
Publications (1)
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WO2006088189A1 true WO2006088189A1 (ja) | 2006-08-24 |
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ID=36916585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/302978 WO2006088189A1 (ja) | 2005-02-21 | 2006-02-20 | 管状物体及びその製造方法 |
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US (1) | US20080149211A1 (ja) |
EP (1) | EP1852751A1 (ja) |
KR (1) | KR20070104898A (ja) |
CN (1) | CN101120289A (ja) |
WO (1) | WO2006088189A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008136467A1 (ja) * | 2007-04-27 | 2008-11-13 | I.S.T. Corporation | コーティング用塗料、積層体および円筒積層体の製造方法 |
JP2017071686A (ja) * | 2015-10-07 | 2017-04-13 | 株式会社森清化工 | パーフルオロゴム成形体 |
CN108363284A (zh) * | 2017-01-26 | 2018-08-03 | 株式会社东芝 | 定影装置 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101437179B1 (ko) * | 2008-09-03 | 2014-09-03 | 코오롱인더스트리 주식회사 | 무솔기 벨트 |
JP4685172B2 (ja) * | 2009-01-20 | 2011-05-18 | シャープ株式会社 | 定着装置およびそれを備えた画像形成装置 |
DE102010062097A1 (de) * | 2010-11-29 | 2012-05-31 | Siemens Aktiengesellschaft | Druckfeste Fluidkapselung |
US10906277B2 (en) * | 2014-08-07 | 2021-02-02 | I.S.T. Corporation | Low-friction member, image-forming device, and agent for forming low-friction coating film |
JP6681212B2 (ja) * | 2015-11-30 | 2020-04-15 | 株式会社潤工社 | ポリウレタンチューブ |
US9873774B1 (en) * | 2016-09-01 | 2018-01-23 | International Business Machines Corporation | Shape memory thermal interface materials |
US9937662B2 (en) | 2016-09-01 | 2018-04-10 | International Business Machines Corporation | Shape memory thermal interface materials |
JP7131117B2 (ja) * | 2018-06-21 | 2022-09-06 | 京セラドキュメントソリューションズ株式会社 | 定着ベルトおよび定着装置並びに画像形成装置 |
CN110292663A (zh) * | 2019-06-28 | 2019-10-01 | 脉通医疗科技(嘉兴)有限公司 | 一种医疗管材的制备方法及医疗管材 |
EP4011939A4 (en) * | 2019-08-08 | 2022-12-14 | Mitsubishi Gas Chemical Company, Inc. | FLAME RETARDANT POLYIMIDE MOLDING MATERIAL AND MOLDING |
CN112574565B (zh) * | 2020-12-08 | 2023-04-25 | 黄山金石木塑料科技有限公司 | 低热膨胀芳香类冷压型聚酰亚胺树脂及其合成方法和应用 |
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US5411779A (en) * | 1989-07-21 | 1995-05-02 | Nitto Denko Corporation | Composite tubular article and process for producing the same |
US5471288A (en) * | 1993-03-05 | 1995-11-28 | Canon Kabushiki Kaisha | Image heating apparatus and heating film |
JP3054010B2 (ja) * | 1993-11-15 | 2000-06-19 | 株式会社アイ.エス.テイ | ポリイミド複合管状物とその製造方法及び製造装置 |
JPH11133776A (ja) * | 1997-10-30 | 1999-05-21 | Fuji Xerox Co Ltd | 定着装置および画像形成装置 |
US6927006B2 (en) * | 2001-09-07 | 2005-08-09 | Xerox Corporation | Fuser member having fluorocarbon outer layer |
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2006
- 2006-02-20 EP EP06714118A patent/EP1852751A1/en not_active Withdrawn
- 2006-02-20 US US11/883,595 patent/US20080149211A1/en not_active Abandoned
- 2006-02-20 WO PCT/JP2006/302978 patent/WO2006088189A1/ja active Application Filing
- 2006-02-20 KR KR1020077017720A patent/KR20070104898A/ko not_active Application Discontinuation
- 2006-02-20 CN CNA2006800052936A patent/CN101120289A/zh active Pending
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JPH06298952A (ja) * | 1993-04-16 | 1994-10-25 | Nitto Denko Corp | 管状物 |
JP2000298411A (ja) * | 1999-04-15 | 2000-10-24 | Canon Inc | ハード定着ローラ、その製造方法およびそれを用いる定着装置 |
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WO2008136467A1 (ja) * | 2007-04-27 | 2008-11-13 | I.S.T. Corporation | コーティング用塗料、積層体および円筒積層体の製造方法 |
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EP2143770A4 (en) * | 2007-04-27 | 2012-10-03 | Ist Corp | COATING MATERIAL, LAMINATE PRODUCT AND PROCESS FOR PRODUCING LAMINATE LAMINATE PRODUCT |
JP2017071686A (ja) * | 2015-10-07 | 2017-04-13 | 株式会社森清化工 | パーフルオロゴム成形体 |
CN108363284A (zh) * | 2017-01-26 | 2018-08-03 | 株式会社东芝 | 定影装置 |
Also Published As
Publication number | Publication date |
---|---|
US20080149211A1 (en) | 2008-06-26 |
CN101120289A (zh) | 2008-02-06 |
EP1852751A1 (en) | 2007-11-07 |
KR20070104898A (ko) | 2007-10-29 |
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