WO2015099025A1 - 低摩擦摺動材およびトナー定着装置用低摩擦加圧部材 - Google Patents
低摩擦摺動材およびトナー定着装置用低摩擦加圧部材 Download PDFInfo
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- WO2015099025A1 WO2015099025A1 PCT/JP2014/084278 JP2014084278W WO2015099025A1 WO 2015099025 A1 WO2015099025 A1 WO 2015099025A1 JP 2014084278 W JP2014084278 W JP 2014084278W WO 2015099025 A1 WO2015099025 A1 WO 2015099025A1
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- sliding
- fiber
- fibers
- fluorine
- friction
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- 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
- G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
- G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M147/00—Lubricating compositions characterised by the additive being a macromolecular compound containing halogen
- C10M147/02—Monomer containing carbon, hydrogen and halogen only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
- C10M157/06—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a sulfur-, selenium- or tellurium-containing compound
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/02—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions obtained from monomers containing carbon, hydrogen and halogen only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2221/00—Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2221/04—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/08—Solids
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/20—Thermoplastic resins
- F16C2208/30—Fluoropolymers
- F16C2208/32—Polytetrafluorethylene [PTFE]
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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
- G03G2215/2035—Heating belt the fixing nip having a stationary belt support member opposing a pressure member
Definitions
- the present invention relates to a sliding material having low friction characteristics and a pressure sliding member in which the sliding material is applied to a toner fixing device.
- the surface of the sliding member is made by laminating or coating a fluororesin on the surface of the sliding member, or by making the fluororesin into a fabric such as woven or non-woven fabric. The arranged one is used.
- the fluororesin laminate or coating has a drawback that the fluororesin film is thin and non-adhesive and thus easily peels off.
- Patent Document 1 in a bearing structure composed of a support and a sliding portion, sliding is performed with a fiber fabric in which polytetrafluoroethylene fibers having a single yarn fineness of 3.5 d (3.9 dtex) or less are present on at least the surface.
- a technology of a bearing structure excellent in slipperiness, characterized by covering the surface of a part is disclosed.
- Patent Document 2 a cloth containing a fluorine-based fiber is mounted on the surface in order to reduce friction of a vibration-proof rubber used for a stabilizer bar of an automobile.
- Patent Document 3 a bearing sliding surface of the stabilizer bush is mounted on the surface.
- a cloth-like liner containing a fluorine-based fiber is used.
- Patent Document 4 as a seismic isolation device for a building structure, a lower rod having a lower load receiving surface having a concave cross-section arc, an upper rod having an upper load receiving surface having a concave cross-section arc, a lower rod and an upper An arc-shaped convex surface that is interposed between the lower load receiving surface and the upper load receiving surface of the saddle and is in surface contact with the upper load receiving surface and the lower load receiving surface of the upper rod and the lower rod on the upper and lower surfaces, respectively.
- the sliding body uses a woven cloth of fluororesin fiber as a surface layer material of the sliding member.
- Patent Document 5 a fluorine fiber fabric is used on the surface of the sliding member as a pressurizing low friction sliding member used in a toner fixing device incorporated in an image forming apparatus such as a copying machine or a printer.
- Patent Document 1 plasma processing is required for fiber fabrics in order to improve adhesion.
- Patent Document 2 discloses a technique that requires heat-fusible fibers to be included in the other surface of the fabric containing fluorine-based fibers in order to improve the adhesion of the vibration-proof rubber to the sliding surface.
- the other surface of the cloth-like liner containing a fluorinated fiber includes a dip yarn in which a resin other than the fluorinated fiber is previously coated with a resin.
- Patent Document 4 an organic fiber woven fabric is laminated on the inside of a woven fabric of fluororesin fibers used as a surface layer material of the sliding member in order to improve the integral bonding property between the woven fabric and the sliding member.
- a technique is disclosed that requires stitching and integration with a thread and impregnating with a thermosetting synthetic resin.
- Patent Document 5 in order to lock the fluorine fiber fabric to the surface of the sliding member, a plurality of locking holes are provided in the fluorine fiber fabric, and a locking piece is provided on the base material at a position corresponding to the locking hole. Necessary technologies are disclosed.
- the present invention is A low-friction sliding material in which fluorine fibers are arranged on the surface of the sliding member is extremely simple compared to the prior art, without requiring a device for improving adhesiveness and the like, and omitting the process of making the fluorine fibers into a fabric. The issue is to provide.
- the low friction sliding material of the present invention has one of the following configurations. That is, (1) On the sliding surface of the sliding member, at least the outermost surface is arranged in parallel with fluorine fibers or a composite fiber containing fluorine fibers in substantially the same direction as the sliding direction, and the sliding surface is covered by 60% or more. Low friction sliding material, or (2) On the sliding surface of the sliding member, at least 60% of the sliding surface is covered with fluorine fibers or composite fibers containing fluorine fibers arranged in parallel at least on the outermost surface in the same direction as the sliding direction. Low friction sliding material, It is.
- the sliding member preferably has an edge portion.
- fluorine fibers or composite fibers containing fluorine fibers are wound around the outer periphery of the sliding member, and the sliding surface of the sliding member is covered with fluorine fibers or composite fibers containing fluorine fibers. Is preferred.
- the sliding surface of the sliding member is coated with a fluorine fiber wound around the outer periphery of the sliding member or a composite fiber containing a fluorine fiber.
- the low friction pressure member for a toner fixing device of the present invention has the following configuration. That is, A low-friction pressure member for a toner fixing device, wherein the low-friction sliding material is used as a sliding member that pressurizes the toner fixing device during toner fixing.
- the low friction sliding material according to the present invention has fluorine fibers or composite fibers containing fluorine fibers arranged in parallel at least on the outermost surface of the sliding member in the same direction as the sliding direction. 60% or more of the sliding surface is covered with fluorine fiber or a composite fiber containing fluorine fiber.
- the arrangement in parallel in the substantially same direction as the sliding direction is a state in which adjacent fibers are arranged almost in parallel without intermingling, and it is ideal that the fiber direction matches the sliding direction.
- the adjacent fibers are overlapped or crossed, or have irregular gaps and are not in a strictly parallel arrangement, it is partial and does not impair the effects of the present invention. , Not deny.
- “covered” is not limited to a state where the sliding surface is completely covered.
- the substantial sliding area (contact area) increases and the sliding characteristics improve, but in the present invention, 60% or more of the area of the sliding surface is covered.
- the covering degree is less than 60% of the area of the sliding surface, the low friction characteristic cannot be exhibited. More preferably, it is 80% or more of the area of the sliding surface.
- the sliding surface here refers to the surface in the area that actually slides with the mating material through the low friction material, and the area that slides with the mating material even if it is the same surface as the sliding surface. Excludes parts that deviate from.
- polytetrafluoroethylene fiber is preferably used as the fluorine fiber used in the present invention.
- the material constituting the polytetrafluoroethylene fiber include a tetrafluoroethylene homopolymer, or a copolymer in which 90 mol% or more, preferably 95 mol% or more of the whole is tetrafluoroethylene. Therefore, it is preferable that the content of tetrafluoroethylene units is large, and a homopolymer is more preferable.
- Examples of the monomer copolymerizable with tetrafluoroethylene include vinyl fluoride compounds such as trifluoroethylene, trifluorochloroethylene, tetrafluoropropylene, hexafluoropropylene, and further propylene, ethylene, isobutylene, styrene, acrylonitrile, and the like.
- Examples of the vinyl compound include, but need not be limited to these.
- a vinyl fluoride compound which is also a compound having a high fluorine content, is preferable from the viewpoint of fiber friction characteristics.
- Fluorine fiber is a soft material and exhibits excellent wear resistance due to its low friction sliding property at low load sliding.
- Fluorofiber-containing composite fibers are preferred in that the composite fibers cover the fluorine fibers that tend to be worn away by high-load sliding, and the slidability can be maintained over a long period of time.
- the composite fiber containing fluorine fibers fibers obtained by twisting fluorine fibers and other fibers, spun yarn obtained by mixing other fibers with the fluorine fibers, and the like can be used.
- the content of the fluorine fiber in the composite fiber obtained by mixing other fibers with the fluorine fiber is preferably large from the viewpoint of sliding characteristics, and the ratio is preferably 50% by weight or more in the composite fiber. When the ratio of the fluorine fiber is 50% by weight or more, an increase in the friction coefficient can be suppressed.
- any of a monofilament composed of a single filament, a multifilament composed of a plurality of filaments, and a spun yarn can be used.
- Monofilaments are preferred from the standpoint that resistance to yarn breakage with a single fiber can be ensured compared to multifilaments, and yarn breakage and fluffing do not occur.
- the multifilament is preferable in that although thread breakage or fluffing may occur, even if it is locally worn, it does not break immediately, and fluffing can be used as an alarm for wear progress.
- the total fineness of the monofilament or multifilament fiber constituting the fluorine fiber or the composite fiber containing the fluorine fiber of the present invention is preferably 50 to 2,000 dtex, more preferably 100 to 1,000 dtex. Preferably there is.
- the total fineness of the fiber is 50 dtex or more, the strength of the fiber is increased and resistance to breakage is increased. If it is 2,000 dtex or less, there are few surface unevenness
- the tensile strength of other fibers combined with the fluorine fiber is higher than the tensile strength of the fluorine fiber.
- Other fibers are preferably one or more fibers selected from polyparaphenylene terephthalamide, polymetaphenylene isophthalamide, glass, carbon, polyparaphenylene benzobisoxazole (hereinafter referred to as PBO), and polyphenylene sulfide (hereinafter referred to as PPS).
- PBO polyparaphenylene benzobisoxazole
- PPS polyphenylene sulfide
- PPS fibers that are durable even under harsh environments such as heat resistance, chemical resistance, and hydrolysis resistance are more preferable.
- a large number of hooks 1 and the like are provided at substantially equal intervals on both side surfaces of the sliding member, and the fibers 2 are formed on the bottom surface as the sliding surface of the sliding member 3 while the fibers 2 are hooked on the hooks 1 and the like.
- a plate-like material can be used instead of the frame shape as the substrate shape.
- the outer periphery of the sliding member is wound with fluorine fibers or a composite fiber containing fluorine fibers, and the sliding surface of the composite member is generally covered with the fluorine fibers or the composite fibers containing the fluorine fibers.
- the surface of the sliding member is covered. It is not always necessary to wrap the fiber without gaps and the sliding surface need not be 100% covered, but when the sliding member is pressed against the mating sliding material and evenly pressurized or heated simultaneously with sliding, It is preferable to wind the fibers without gaps or to wind the fibers while providing small gaps at regular intervals.
- the wound layers may overlap the fibers, but this is not a denial as long as the layers do not impair the effects of the present invention.
- the winding of the fiber may vary, the winding may be uneven (dense / dense) due to the shape of the sliding member, the protrusion, the member for attaching the sliding material, or the influence of elastic deformation, etc. Although it is good, it is preferable to limit the effect of the present invention.
- Winding may be done manually.
- an existing filament winding method or the like can be used.
- the low friction sliding material of this invention obtained is a form where the fiber was arranged in parallel, there is anisotropy in the parallel direction and the direction which intersects perpendicularly. It is more preferable that the parallel direction of the fibers and the sliding direction substantially coincide with each other in order to utilize the characteristics and to further exhibit the low friction characteristics.
- the substantially coincidence between the parallel direction and the sliding direction means that the direction deviation does not need to be strictly ⁇ 0 °, and the direction of the direction is set so that the sliding resistance due to the steps of the fibers arranged in parallel becomes extremely small. It is sufficient that the deviation is within ⁇ 30 °.
- the low friction sliding material of the present invention since the low friction sliding material of the present invention has anisotropy in sliding characteristics, it is particularly suitable for applications requiring sliding characteristics in a specific direction.
- the fibers can be continuously arranged in parallel from the sliding surface at the edge portion of the sliding material, the sliding characteristics corresponding to the shape can be exhibited also at the edge portion.
- the moving material is an optimum member for use in the low-friction pressure member for the toner fixing device.
- the toner fixing device is a device for fixing a toner image on a recording sheet by passing a recording sheet carrying an unfixed toner image between two rolls and applying pressure and heating to the unfixed toner image. Yes, it can be applied to a member that slides while being pressurized and / or heated in the apparatus. In particular, it increases the fixing speed, prevents the occurrence of uneven fixing and paper wrinkles, improves image quality, reduces the size of the fixing device, and increases the warm-up time until the fixing device at room temperature is brought into a state where fixing processing is possible. In order to reduce the length, development of an apparatus in which one of the two nip rolls is replaced with a fixing endless belt is under development. In this fixing endless belt system, the pressure is applied to the inside of the fixing endless belt.
- a pressure / heating member for heating, and a sheet on which the toner image is transferred is nipped between the rotationally driven roll and the fixing endless belt.
- the fixed pressure / heating member slides in only one direction between its surface and the inner peripheral surface of the fixing belt, but its sliding resistance is low and a low-cost sliding material is used. It is fit.
- the low friction sliding member of the present invention is optimally used as this low friction pressing member.
- thermosetting resin examples include phenol resin, melamine resin, urea resin, unsaturated polyester resin, epoxy resin, polyurethane resin, diallyl phthalate resin, silicon resin, polyimide resin, vinyl ester.
- thermoplastic resin such as a resin or a modified resin thereof, vinyl chloride resin, polystyrene, ABS resin, polyethylene, polypropylene, fluororesin, polyamide resin, polyacetal resin, polycarbonate resin, polyester, polyamide, etc.
- thermoplastic polyurethane Synthetic rubber such as butadiene rubber, nitrile rubber, neoprene, polyester, or elastomer, or a mixture thereof can be preferably used.
- resins mainly composed of phenolic resins and polyvinyl butyral resins, unsaturated polyester resins, vinyl ester resins, polyolefin resins such as polyethylene and polypropylene, and polyester resins have impact resistance, dimensional stability, strength, and price. Etc. can be preferably used.
- thermosetting resins and thermoplastic resins may contain various additives which are usually used for industrial purposes, applications, productivity in manufacturing processes and processing steps, or improvement of properties.
- a modifier, a plasticizer, a filler, a release agent, a colorant, a diluent, and the like can be included.
- the main component here means a component having the largest weight ratio among components excluding the solvent.
- a resin mainly composed of phenol resin and polyvinyl butyral resin these two kinds of resins are used. It means that the weight ratio is the first and second (in no particular order).
- thermosetting resin As a method of impregnating the resin, when using a thermosetting resin, the thermosetting resin is dissolved in a solvent and adjusted to a varnish, and impregnated by knife coating processing, roll coating processing, comma coating processing, gravure coating processing, etc. A coating method is generally used. Further, when a thermoplastic resin is used, melt extrusion lamination or the like is generally used.
- the fibers arranged on the surface other than the sliding surface are impregnated with the resin to prevent the fiber from shifting, and even if a thread breakage occurs on the sliding surface, the fiber is dispersed over a wide range. You may take measures to prevent this. In this case, point adhesion to a specific location may be used instead of resin impregnation on the entire surface.
- Fluorine lubricant or the like can be added to the sliding surface of the low friction sliding material of the present invention as necessary.
- the fiber when the fiber is wound around the sliding member or the base material and / or after the winding, the fiber is wound around the surface of the sliding member or the base material in order to prevent the fiber from slipping or slipping between the sliding member and the base material. Fine groove processing or surface roughening processing in the same direction as the direction may be performed.
- the measuring method of various characteristics used in the present embodiment is as follows.
- Fiber coverage The sliding surface covered with fibers is a 3 ⁇ 5 mm range of fiber that contributes effectively to sliding, based on a 30-fold enlarged photograph of Keyence's microscope VHX-2000. It calculated from the ratio of an area and the area of other parts (exposed sliding member etc.).
- a test body is set on a flat indenter (area 63 x 63 mm), which is standard equipment of the equipment, and a SUS304 stainless steel plate (mirror finish) as a sliding mating material is set on the movable table side.
- a SUS304 stainless steel plate (235 ⁇ 80 ⁇ 3 mm) wrapped with fibers was used as a test body and set on the movable table side.
- one end of the fiber When winding the fiber, one end of the fiber is bonded and fixed to the surface opposite to the sliding surface of the SUS304 stainless steel plate (235 x 80 x 3 mm), and the fiber is slid while applying a slight tension so that the fiber does not sag.
- the end of the fiber When wound around the outer periphery of the moving member, it was wound spirally, and when the winding was finished, the end of the fiber was adhered and fixed to the surface opposite to the surface that also became the sliding surface.
- the initial end portion and the end portion of the winding are left as appropriate margins from the sliding member end portion so as not to be detached from the sliding member end portion.
- this blank portion was not applied to the moving area of the flat indenter. In addition, this blank portion was not considered in the coverage.
- the friction coefficient in the two directions of the parallel direction and the orthogonal direction with respect to the sliding direction was measured by setting the direction in which the fiber was wound around the SUS304 stainless steel plate as the long direction and the short direction.
- the dynamic friction coefficient determination index is best when the friction coefficient is less than 0.071, next is best between 0.071 and less than 0.086, better is between 0.086 and less than 0.101, good is between 0.101 and less than 0.116, 0.116 or more and less than 0.130 was regarded as fair, and more than 0.130 was regarded as bad.
- Comparative Example 2 the prepared fabric was fixed to the sliding surface of the SUS304 stainless steel plate with a dedicated clamp, which is a standard accessory of the surface measuring machine, to obtain a test specimen.
- the woven fabric was also measured in two directions, the weaving direction and the orthogonal direction.
- a specimen was prepared by winding a fiber around a 30 ⁇ 34 ⁇ 2 mm polyacetal resin plate, and fixed to a sample holder.
- one end of the fiber is tied to the screw attached to the side surface (the surface that does not become the sliding surface) of the polyacetal resin plate, and it is spiraled when it goes around the outer periphery of the sliding member while applying a slight tension so that the fiber does not sag.
- the end of the fiber was fixed to the side surface (the surface that does not become the sliding surface).
- the initial end and the end of the winding were left with a margin of 2 mm from the end of the sliding member, and the sliding surface was 30 ⁇ 30 mm. Note that this blank portion is not considered in the coverage.
- Comparative Example 2 the prepared fabric was set on the polyacetal resin plate, and then fixed with a dedicated attachment that is a standard equipment of the ring wear tester to obtain a test specimen.
- the mating material is made of S45C, polished with a sandpaper on a hollow cylindrical surface with an outer diameter of 25.6 mm, an inner diameter of 20 mm, and a length of 15 mm, and measured with a roughness measuring instrument (Mitutoyo SJ-201).
- the counterpart material in the range of 8 ⁇ mm ⁇ 0.1 Ra was used.
- the transition of the average friction coefficient from 10 minutes to 150 minutes from the start of the test and the surface condition of the specimen after friction sliding were observed, and the change in the friction coefficient with respect to the friction coefficient after 10 minutes was less than 15%. It is best if there is almost no abrasion of the fiber, and the change in the coefficient of friction is less than 15% with respect to the coefficient of friction after 10 minutes, but it is good if the coefficient of friction is slightly worn, and the coefficient of friction after 10 minutes after wear. On the other hand, the change in the coefficient of friction increased from 15% to 30% was determined as fair, and the case where the wear was severe and the coefficient of friction increased by 30% or more or the fiber was broken was determined as bad.
- Example 1 A PTFE fiber having 440 dtex, 60 filaments, and 300 t / m twisted yarn was used as the fluorine fiber, and a sliding material model was produced by winding it around a sliding member.
- a sliding member a 235 ⁇ 80 ⁇ 3 mm SUS304 stainless steel plate was used for measuring the dynamic friction coefficient, and a 30 ⁇ 30 ⁇ 2 mm polyacetal resin plate was used for the ring wear test.
- Example 2 As a composite fiber containing a fluorine fiber, a fiber in which 440 dtex, 60 filaments, 300 ft / m twisted PTFE fiber and 220 dtex, 50 filaments, 300 tw / m twisted PPS fiber were twisted. At this time, the weight ratio of the fluorine fibers was 67%.
- the PPS fiber selected as the other fiber to be combined with the fluorine fiber was a fiber having a higher tensile strength and a lower creep rate than the PTFE fiber. That is, it was as follows.
- PTFE fiber Tensile strength 616 cN, creep rate 4.5%
- PPS fiber Tensile strength 924cN, creep rate 2.0%
- the tensile strength was determined by measuring the breaking strength according to JIS L 1013: 2010 (chemical fiber filament yarn test method). The creep rate is fixed at one end of the fiber in the standard state (20 ° C. ⁇ 65% RH), and the load at which the tension applied to the fiber is 20% of the breaking strength obtained above is suspended at the other end and 1 hour has passed. After that, the length (Lc 1 ) was measured, and the creep rate was determined by the following formula according to how much the length (Lc 0 ) was extended. The initial length was the length under the initial load of (5.88 mN ⁇ number of displayed tex).
- Creep rate (%) [(Lc 1 ⁇ Lc 0 ) / Lc 0 ] ⁇ 100
- the procedure was the same as in Example 1 except that the above composite fiber was used.
- the fiber coverage at this time was 100% for both the dynamic friction coefficient measurement specimen and the ring wear specimen.
- Example 3 When the fibers were wound, the same procedure as in Example 2 was performed, except that the gaps between the wound fibers were substantially evenly spaced, and the number of turns on the specimen was reduced to approximately 90% of the number of turns in Example 2. Adjacent fibers were juxtaposed in the same direction.
- the fiber coverage at this time was 89% for the dynamic friction coefficient measurement specimens and 90% for the ring wear specimens.
- Example 4 When winding the fibers, the gaps between the wound fibers were substantially evenly spaced, and the same procedure as in Example 2 was performed except that the number of windings on the specimen was reduced to approximately 70% of the number of windings in Example 2. The fiber coverage at this time was 68% in the parallel direction, 69% in the perpendicular direction, and 71% in the ring wear test specimen for the dynamic friction coefficient measurement specimen. (Example 5) When winding the fibers, the gaps between the wound fibers were substantially evenly spaced, and the same procedure as in Example 2 was performed except that the number of windings on the specimen was reduced to about 50% of the number of windings in Example 2. The fiber coverage was 51% in the parallel direction, 50% in the perpendicular direction, and 50% in the ring wear test specimen.
- Example 1 As an example not containing fluorine fibers, the same procedure as in Example 1 was performed except that PPS fibers having 220 dtex, 50 filaments, and 300 t / m twisted yarn were used. The fiber coverage at this time was 100% for both the dynamic friction coefficient measurement specimen and the ring wear specimen.
- Comparative Example 2 PPS fibers with 220 dtex, 50 filaments and 300 t / m twist are used as warp and weft as base fabric fibers, and PTFE fibers with 440 dtex, 60 filaments and 300 t / m twist are used as warp yarns and weft yarns.
- Each weave density is 70 + 70 pieces / inch (2.54cm) (sliding fabric warp + base fabric warp (books / inch (2.54cm), horizontal 60 + 60 pieces / inch (2.54cm)) Weft fabric + base fabric weft (book / inch (2.54 cm)), the entanglement between the sliding fabric and the base fabric is such that the warp yarns of the sliding fabric and the base fabric are entangled, and the frequency of coupling is 0.2.
- a double flat fabric was produced with a rapier loom, then scoured in a scouring tank at 80 ° C. and set at 200 ° C.
- the ratio of fluorine fibers on the surface to be the sliding surface was set to 95% by area ratio.
- dynamic coefficient of friction measurement and ring wear test were performed. The fiber coverage was observed with a microscope, and as a result, the sliding member was 100% concealed and the coverage was 100%.
- Table 1 summarizes the results of tribogear dynamic friction coefficient measurement and ring wear test for Examples 1-5 and Comparative Examples 1-2.
- Example 5 since the fiber coverage was 51% or 50%, at the time of measuring the dynamic friction coefficient, the sliding member contacted the flat indenter from the gap of the fiber, and the sliding performance decreased slightly, and the ring wear test Although the contact area of the PPS fiber increased due to the abrasion of the fluorine fiber and led to an increase in the coefficient of friction, practical performance can be expected as compared with Comparative Example 1. In Comparative Example 1, slidability was clearly insufficient because no fluorine fiber was used.
- Comparative Example 2 Although the low friction coefficient and durability characteristics were excellent, a complicated weaving process was required to make the fibers into a woven fabric in advance, and the labor and cost were great.
- the dedicated clamp and the dedicated attachment provided in the testing machine are used. However, when the fabric is applied as the sliding member, it is necessary to provide a dedicated fixing means. .
- the embodiment of the present invention is overwhelmingly simple and the process is simplified.
- the winding direction of the fiber is slightly inclined with respect to the width direction of the specimen, but the fiber diameter is actually compared with the width dimension of the substrate to be wound. Is so small that it can be ignored, the inclination in the winding direction is also so small that it can be ignored. It was confirmed that the inclination was less than 1 ° even when measured with a protractor.
- the fibers are arranged in parallel in almost the same direction, and in the dynamic friction coefficient test, it is confirmed that the winding direction is parallel and orthogonal to the sliding direction, and the directions are the same. did it.
- the low friction sliding material of the present invention can be widely used as a pressure sliding member, and in particular, can be used as a pressure sliding member suitable for toner fixing device applications.
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- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
(1)摺動部材の摺動面上の、少なくとも最表面に摺動方向とほぼ同一方向にフッ素繊維またはフッ素繊維を含む複合繊維が並列に配置され、前記摺動面が60%以上被覆されている低摩擦摺動材、または、
(2)摺動部材の摺動面上の、少なくとも最表面に摺動方向とほぼ同一方向に並列に配置されたフッ素繊維またはフッ素繊維を含む複合繊維により、前記摺動面が60%以上被覆されている低摩擦摺動材、
である。
前記低摩擦摺動材を、トナー定着装置におけるトナー定着時に加圧する摺動部材に用いるトナー定着装置用低摩擦加圧部材、である。
繊維で被覆された摺動面について3×5mmの範囲をキーエンス製マイクロスコープVHX-2000にて30倍に拡大した写真をもとに、摺動に有効に寄与する繊維の面積と、それ以外の部分(露出している摺動部材など)の面積との比率から計算した。
新東科学(株)製トライボギア表面性測定機(TYPE:HEIDON-14DR)を用い、恒温恒湿環境下(20±2℃、60±5%RH)にて、移動速度100mm/min、荷重1,000gfの条件で計測した。
JIS K 7218:1986(プラスチックの滑り摩耗試験方法)A法に準じて求めた。リング摩耗試験機は、オリエンテック製MODEL:EFM-III-ENを用い、摩擦荷重を、20MPa、10MPa、5MPaと3条件で、摩擦速度:10mm/秒にて試験を行い摩擦摺動距離100mまでの摺動トルクを測定した。
(実施例1)
フッ素繊維として440dtex、60フィラメント、撚糸数300t/mのPTFE繊維を用い、摺動部材に巻き付け摺動材モデルを製作した。摺動部材には、動摩擦係数計測用として235×80×3mmのSUS304ステンレス板を使用し、リング摩耗試験用として30×30×2mmのポリアセタール樹脂板を使用した。
(実施例2)
フッ素繊維を含む複合繊維として、440dtex、60フィラメント、撚糸数300t/mのPTFE繊維と、220dtex、50フィラメント、撚糸数300t/mのPPS繊維とを、合撚した繊維を使用した。このときの、フッ素繊維の重量比率は、67%であった。
PPS繊維 :引張強力924cN、クリープ率2.0%
なお、ここで、引張強力は、JIS L 1013:2010(化学繊維フィラメント糸試験方法)に準じて破断強力を測定し、引張強力とした。クリープ率は、標準状態(20℃×65%RH)で繊維の一端を固定して、他端に繊維にかかる張力が上記で得た破断強度の20%となる荷重を吊り下げ、1時間経過した後に、その長さ(Lc1)を測定し、初期長さ(Lc0)に対してどれだけ伸びたかで次式によってクリープ率を求めた。初期長さは、(5.88mN×表示テックス数)の初荷重をかけた状態での長さとした。
上記複合繊維を使用する以外は、実施例1と同様とした。このときの繊維被覆率は、動摩擦係数計測用試験体、リング摩耗試験体いずれも100%であった。
(実施例3)
繊維を巻き付ける際、巻き付けた繊維同士のすき間をほぼ均等に空け、試験体への巻き数を実施例2における巻き数のおよそ9割に低減させた以外は、実施例2と同様とした。隣接した繊維同士は同一方向に並列していた。このときの繊維被覆率は、動摩擦係数計測用試験体でいずれも89%、リング摩耗試験体で90%であった。
(実施例4)
繊維を巻き付ける際、巻き付けた繊維同士のすき間をほぼ均等に空け、試験体への巻き数を実施例2における巻き数のおよそ7割に低減させた以外は、実施例2と同様とした。このときの繊維被覆率は、動摩擦係数計測用試験体で並行方向68%、直角方向69%、リング摩耗試験体で71%であった。
(実施例5)
繊維を巻き付ける際、巻き付けた繊維同士のすき間をほぼ均等に空け、試験体への巻き数を実施例2における巻き数のおよそ5割に低減させた以外は、実施例2と同様とした。このときの繊維被覆率は、動摩擦係数計測用試験体で並行方向51%、直角方向50%、リング摩耗試験体で50%であった。
(比較例1)
フッ素繊維を含まない例として、220dtex、50フィラメント、撚糸数300t/mのPPS繊維を使用した以外は、実施例1と同様とした。このときの繊維被覆率は、動摩擦係数計測用試験体、リング摩耗試験体いずれも100%であった。
(比較例2)
ベース織物繊維として、220dtex、50フィラメント、撚糸数300t/mのPPS繊維をタテ糸、ヨコ糸に用い、摺動織物として440dtex、60フィラメント、撚糸数300t/mのPTFE繊維をタテ糸、ヨコ糸に用い、それぞれの織り密度がタテ70+70本/inch(2.54cm)(摺動織物タテ+ベース織物タテ(本/inch(2.54cm)、ヨコ60+60本/inch(2.54cm)(摺動織物ヨコ+ベース織物ヨコ(本/inch(2.54cm)、摺動織物とベース織物の絡み合いは摺動織物とベース織物のタテ糸を絡み糸として結合の頻度が0.2となるように、レピア織機にて2重平織物を製作した。その後80℃の精練槽にて精練を行い、200℃でセットした。
2:繊維
3:摺動部材
4:枠状の基材
Claims (6)
- 摺動部材の摺動面上の、少なくとも最表面に摺動方向とほぼ同一方向にフッ素繊維またはフッ素繊維を含む複合繊維が並列に配置され、前記摺動面が60%以上被覆されている低摩擦摺動材。
- 摺動部材の摺動面上の、少なくとも最表面に摺動方向とほぼ同一方向に並列に配置されたフッ素繊維またはフッ素繊維を含む複合繊維により、前記摺動面が60%以上被覆されている低摩擦摺動材。
- 前記摺動部材がエッジ部を有する請求項1または2に記載の低摩擦摺動材。
- 摺動部材の外周にフッ素繊維またはフッ素繊維を含む複合繊維を巻き付け、摺動部材の摺動面がフッ素繊維またはフッ素繊維を含む複合繊維で被覆されている請求項1~3のいずれかに記載の低摩擦摺動材。
- 摺動部材の摺動面が、摺動部材の外周に巻き付けられたフッ素繊維またはフッ素繊維を含む複合繊維により被覆されている請求項1~3のいずれかに記載の低摩擦摺動材。
- 請求項1~5のいずれかに記載の低摩擦摺動材を、トナー定着装置における定着時に加圧する摺動部材に用いるトナー定着装置用低摩擦加圧部材。
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CN201480071003.2A CN105849648B (zh) | 2013-12-26 | 2014-12-25 | 低摩擦滑动件及调色剂定影装置用低摩擦加压部件 |
EP14874220.8A EP3091399B1 (en) | 2013-12-26 | 2014-12-25 | Low-friction sliding material and low-friction pressurizing member for toner fixing devices |
JP2015504795A JP6481606B2 (ja) | 2013-12-26 | 2014-12-25 | 低摩擦摺動材およびトナー定着装置用低摩擦加圧部材 |
US15/107,666 US20160320732A1 (en) | 2013-12-26 | 2014-12-25 | Low-friction sliding material and low-friction pressurizing member for toner fixing devices |
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JP2013-269336 | 2013-12-26 | ||
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PCT/JP2014/084278 WO2015099025A1 (ja) | 2013-12-26 | 2014-12-25 | 低摩擦摺動材およびトナー定着装置用低摩擦加圧部材 |
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EP (1) | EP3091399B1 (ja) |
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JP2020154074A (ja) * | 2019-03-19 | 2020-09-24 | 富士ゼロックス株式会社 | 摺動部材、定着装置、プロセスカートリッジ及び画像形成装置 |
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EP3020368B1 (en) * | 2013-07-10 | 2019-04-24 | Terumo Kabushiki Kaisha | Biological lumen graft substrate, production method for biological lumen graft substrate, and biological lumen graft made using biological lumen graft substrate |
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- 2014-12-25 JP JP2015504795A patent/JP6481606B2/ja active Active
- 2014-12-25 US US15/107,666 patent/US20160320732A1/en not_active Abandoned
- 2014-12-25 EP EP14874220.8A patent/EP3091399B1/en active Active
- 2014-12-25 WO PCT/JP2014/084278 patent/WO2015099025A1/ja active Application Filing
- 2014-12-25 CN CN201480071003.2A patent/CN105849648B/zh not_active Expired - Fee Related
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JP7302211B2 (ja) | 2019-03-19 | 2023-07-04 | 富士フイルムビジネスイノベーション株式会社 | 摺動部材、定着装置、プロセスカートリッジ及び画像形成装置 |
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JP6481606B2 (ja) | 2019-03-13 |
EP3091399A4 (en) | 2017-08-23 |
JPWO2015099025A1 (ja) | 2017-03-23 |
CN105849648B (zh) | 2019-09-03 |
EP3091399A1 (en) | 2016-11-09 |
US20160320732A1 (en) | 2016-11-03 |
EP3091399B1 (en) | 2018-11-21 |
CN105849648A (zh) | 2016-08-10 |
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