WO2017073405A1 - Elastomer member and sealing member for machine tools - Google Patents

Elastomer member and sealing member for machine tools Download PDF

Info

Publication number
WO2017073405A1
WO2017073405A1 PCT/JP2016/080840 JP2016080840W WO2017073405A1 WO 2017073405 A1 WO2017073405 A1 WO 2017073405A1 JP 2016080840 W JP2016080840 W JP 2016080840W WO 2017073405 A1 WO2017073405 A1 WO 2017073405A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
sheet
machine tool
urethane
coolant
Prior art date
Application number
PCT/JP2016/080840
Other languages
French (fr)
Japanese (ja)
Inventor
勇喜 阿部
岩崎　成彰
Original Assignee
バンドー化学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by バンドー化学株式会社 filed Critical バンドー化学株式会社
Priority to JP2016564279A priority Critical patent/JP6197128B1/en
Priority to CN201680061044.2A priority patent/CN108137770B/en
Publication of WO2017073405A1 publication Critical patent/WO2017073405A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/08—Protective coverings for parts of machine tools; Splash guards
    • B23Q11/0875—Wipers for clearing foreign matter from slideways or slidable coverings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain

Definitions

  • the present invention relates to an elastomer member and a machine tool seal member.
  • Machine tools such as lathes and machining centers are the most basic mechanical devices widely used in the manufacturing industry.
  • seal members such as a lip seal, a slide seal, a telescopic seal, and a cover seal are used to protect the drive mechanism and the like from chips and coolant (cutting oil).
  • a sealing member for machine tools a sealing member having a supporting member and an elastic member integrated with the supporting member is known.
  • Such seal members are made of chloroprene rubber (CR), acrylonitrile rubber (NBR), hydrogenated nitrile rubber (H-NBR), styrene butadiene rubber (SBR), ethylene / propylene diene monomer (EPDM) It has been proposed to use a rubber material such as polyurethane or an elastic material such as polyurethane (for example, see Patent Document 1).
  • CR chloroprene rubber
  • NBR acrylonitrile rubber
  • H-NBR hydrogenated nitrile rubber
  • SBR styrene butadiene rubber
  • EPDM ethylene / propylene diene monomer
  • the machine tool seal member is a member for protecting the drive mechanism from coolant or the like. Therefore, the elastic member of the sealing member for machine tools is exposed to the coolant during use. The elastic member exposed to the coolant is gradually swollen by the coolant. As a result, the sealing member for machine tools cannot perform its function and needs to be replaced. Moreover, when the elastic member containing an additive is exposed to a coolant, the said additive may elute. As a result, the physical properties of the elastic member may change, and the function of the machine tool seal member may not be achieved.
  • the coolant is roughly classified into a water-insoluble cutting oil and a water-soluble cutting oil, and both have different characteristics.
  • the elastic member of the conventional sealing member for machine tools is (a) one that swells or elutes easily with water-soluble cutting oil even if it is difficult to swell and dissolve with water-insoluble cutting oil, or ( b) Even if it is difficult to swell and dissolve with water-soluble cutting oil, only water-soluble cutting oil easily swells or dissolves. That is, an elastic member that hardly swells and dissolves in both water-insoluble cutting oil and water-soluble cutting oil has not been known so far.
  • the present inventors have intensively studied to solve such a problem, it is difficult to swell to any coolant of water-insoluble cutting oil and water-soluble cutting oil, or the additive is difficult to elute,
  • the present invention has been completed by finding an elastomer member that can be suitably used for a machine tool using a coolant.
  • the elastomer member of the present invention comprises a cured product of a thermosetting polyurethane composition
  • the thermosetting polyurethane composition contains a polyol component, an isocyanate component and a crosslinking agent, and the polyol component is a polyethylene adipate ester polyol.
  • PEA polyethylene adipate ester polyol
  • the elastomer member is made of a cured product of a thermosetting urethane composition having a JIS-A hardness of 67 ° or more, it swells and dissolves in any water-insoluble cutting water or water-soluble cutting oil. It ’s hard. Therefore, it can be suitably used for a machine tool that uses coolant.
  • the sealing member for machine tools of the present invention is a sealing member for machine tools comprising a supporting member and an elastic member integrated with the supporting member, wherein the elastic member is composed of the elastomer member of the present invention.
  • the elastic member is made of the elastomer member of the present invention which is difficult to swell or elute by the coolant. Therefore, the sealing member for machine tools is not easily deteriorated even when exposed to the coolant, and can maintain excellent sealing performance for a long period of time.
  • the elastomer member of the present invention has excellent durability against cutting oil (coolant) regardless of water-insoluble cutting oil or water-soluble cutting oil. Since the sealing member for machine tools of this invention consists of the elastomer member of this invention, it can maintain the outstanding sealing performance over a long period of time.
  • FIG.1 (a) is a top view which shows an example of the sealing member for machine tools which concerns on embodiment of this invention
  • FIG.1 (b) is a side view of Fig.1 (a).
  • Fig.2 (a) is a reverse view which shows another example of the sealing member for machine tools which concerns on embodiment of this invention
  • FIG.2 (b) is a side view of Fig.2 (a).
  • FIG. 4A is a graph showing the immersion time and the weight increase rate when the sheet prepared in the example is immersed in the coolant A (50 ° C.), and
  • FIG. 4B is the sheet prepared in the comparative example.
  • FIG. 5A is a graph showing the immersion time and the weight increase rate when the sheet prepared in the example is immersed in the coolant B (50 ° C.)
  • FIG. 5B is the sheet manufactured in the comparative example.
  • FIG. 6A is a graph showing the immersion time and the rate of weight increase when the sheet prepared in the example is immersed in the coolant C (50 ° C.)
  • FIG. 6B is the sheet manufactured in the comparative example.
  • the elastomer member which concerns on embodiment of this invention consists of hardened
  • the said thermosetting urethane composition contains a polyol component, an isocyanate component, and a crosslinking agent, and the said polyol component is a polyethylene adipate ester polyol (PEA). Since the said elastomer member is a hardened
  • PEA polyethylene adipate ester polyol
  • the PEA preferably has a number average molecular weight of 1000 to 3000.
  • An elastomer member using PEA having a number average molecular weight within the above range can more reliably prevent intrusion of chips, coolant, and the like at the time of contact with the counterpart material.
  • the number average molecular weight is a measured value in terms of polystyrene by GPC (gel permeation chromatograph) measurement.
  • thermosetting urethane composition contains an isocyanate component and a crosslinking agent other than PEA (polyol component). It does not specifically limit as said isocyanate component, For example, aliphatic isocyanate, alicyclic isocyanate, aromatic isocyanate etc. are mentioned. Of these, aromatic isocyanates are preferred from the viewpoint of good wear resistance.
  • aliphatic isocyanate examples include 1,6-hexamethylene diisocyanate (HDI), 2,2,4-trimethylhexamethylene diisocyanate, and lysine diisocyanate.
  • HDI 1,6-hexamethylene diisocyanate
  • 2,2,4-trimethylhexamethylene diisocyanate examples include 1,6-hexamethylene diisocyanate (HDI), 2,2,4-trimethylhexamethylene diisocyanate, and lysine diisocyanate.
  • isocyanurate body, biuret body, adduct body, etc. of hexamethylene diisocyanate and isophorone diisocyanate are also mentioned.
  • alicyclic isocyanate examples include alicyclic diisocyanates such as isophorone diisocyanate (IPDI), 4,4′-dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate, norbornane diisocyanate (NBDI), and the like.
  • IPDI isophorone diisocyanate
  • NBDI norbornane diisocyanate
  • aromatic isocyanate examples include tolylene diisocyanate (TDI), phenylene diisocyanate, 4,4'-diphenylmethane diisocyanate, polymethylene polyphenylene polyisocyanate, and a mixture of diphenylmethane diisocyanate and polymethylene polyphenylene polyisocyanate (hereinafter collectively referred to as generic names).
  • TDI tolylene diisocyanate
  • phenylene diisocyanate 4,4'-diphenylmethane diisocyanate
  • polymethylene polyphenylene polyisocyanate examples of the aromatic isocyanate
  • NDI 1,5-naphthalene diisocyanate
  • XDI xylylene diisocyanate
  • carbodiimide-modified MDI urethane-modified MDI, and the like.
  • MDI and NDI are preferable as the isocyanate component. This is because, among aromatic isocyanates, particularly excellent wear resistance is exhibited.
  • crosslinking agent examples include 1,4-butanediol (1,4-BD), 1,4-bis ( ⁇ -hydroxyethoxy) benzene (BHEB), ethylene glycol, propylene glycol, hexanediol, diethylene glycol, triethylene glycol, and the like.
  • Methylolpropane (TMP) glycerin, 4,4′-methylenebis (2-chloroaniline), hydrazine, ethylenediamine, diethylenetriamine, 4,4′-diaminodiphenylmethane, 4,4′-diaminodicyclohexylmethane, N, N-bis ( 2-hydroxypropyl) aniline, water and the like.
  • 1,4-butanediol, TMP, and BHEB are preferable because appropriate rubber hardness and rubber rigidity are easily exhibited.
  • a thermosetting urethane composition containing 1,4-butanediol, TMP, or BHEB has a relatively long pot life and can be molded by hand casting.
  • the said crosslinking agent may be used independently and may be used together 2 or more types.
  • thermosetting urethane composition further includes chain extenders, reaction aids such as crosslinking accelerators and crosslinking retarders, hydrolysis inhibitors, reinforcing materials such as inorganic fibers and inorganic fillers, colorants, light stabilizers, Various additives such as a heat stabilizer, an antioxidant, an antifungal agent, a flame retardant, and a filler (a bulking agent) may be contained as necessary.
  • reaction aids such as crosslinking accelerators and crosslinking retarders, hydrolysis inhibitors, reinforcing materials such as inorganic fibers and inorganic fillers, colorants, light stabilizers,
  • Various additives such as a heat stabilizer, an antioxidant, an antifungal agent, a flame retardant, and a filler (a bulking agent) may be contained as necessary.
  • the isocyanate group concentration in the thermosetting urethane composition is preferably 5.50 to 10.0% by weight.
  • concentration means the weight ratio of the isocyanate group contained in the total amount of an isocyanate component, a polyol component, and a crosslinking agent.
  • the cured product of the thermosetting urethane composition has a JIS-A hardness (value measured by a spring type A hardness tester in accordance with JIS K 7312) of 67 ° or more.
  • JIS-A hardness of the cured product is less than 67 °, the cured product has few crosslinking points, and swelling due to exposure to coolant cannot be sufficiently avoided.
  • the upper limit of the JIS-A hardness of the cured product is not particularly limited, and may be appropriately selected in consideration of the use location of the elastomer member.
  • the JIS-A hardness of the cured product is preferably 67 to 90 ° when the elastomer member is used as an elastic member of a sealing member for a machine tool to be described later.
  • the JIS-A hardness of the cured product is less than 67 °, as described above, resistance to the coolant may not be exhibited.
  • the JIS-A hardness of the cured product exceeds 90 °, the stress (pressure contact force) of the seal portion becomes too large, and as a result, the sliding resistance may become too large.
  • the JIS-A hardness is more preferably 70 to 85 °.
  • the elastomer member is obtained by curing the thermosetting urethane composition under predetermined conditions.
  • the curing conditions for the thermosetting urethane composition are not particularly limited, and may be set as appropriate according to the composition of the thermosetting urethane composition.
  • As the curing conditions it is usually possible to employ conditions of heating at 100 to 160 ° C. for 30 to 90 minutes. Further, after the curing treatment is performed under the above conditions and the mold is removed from the mold, post-curing may be performed at 100 to 160 ° C. for 3 to 48 hours.
  • the isocyanate component and the polyol component contained in the thermosetting urethane composition may be pre-reacted to form a prepolymer before the thermosetting urethane composition is cured under predetermined conditions.
  • the molding method of the thermosetting urethane composition for obtaining the elastomer member is not particularly limited.
  • the molding method include normal pressure casting, reduced pressure casting, centrifugal molding, continuous rotational molding, extrusion molding, injection molding, reaction injection molding (RIM), spin coating, and the like. Among these, centrifugal molding and continuous rotational molding are preferable.
  • Such an elastomer member can be suitably used for a machine tool using a coolant.
  • Fig.1 (a) is a top view which shows an example of the sealing member for machine tools which concerns on embodiment of this invention
  • FIG.1 (b) is a side view of Fig.1 (a).
  • the machine tool seal member 10 includes a support member 11 and an elastic member 12.
  • the support member 11 is made of a processed metal plate bent along the longitudinal direction of a substantially rectangular metal plate.
  • the elastic member 12 is a plate-like member 12 fixed via an adhesive layer 13 along the longitudinal direction of the support member 11.
  • the elastic member 12 is made of the elastomer member.
  • the edge portion 12 a of the elastic member 12 is slidably in contact with the mating member, whereby a predetermined portion of the machine tool can be reliably sealed.
  • the support member 11 is usually made of a metal material such as steel or aluminum from the viewpoint of durability or strength.
  • the support member 11 may be made of ceramic, rigid plastic, or the like.
  • a non-surface treated steel plate a steel plate subjected to surface treatment such as zinc phosphate treatment, chromate treatment, rust prevention resin treatment, or an elastic metal plate such as phosphor bronze or spring steel is used. You can also.
  • the support member 11 may be surface-treated in advance with a urethane-based primer, a silane-based primer, or the like in order to improve compatibility with the adhesive layer 13. Further, the surface of the support member 11 (particularly the region in contact with the elastic member 12 via the adhesive layer 13) may be subjected to a roughening treatment. Thereby, the adhesiveness of the supporting member 11 and the adhesive bond layer 13 can be improved by an anchor effect.
  • the elastic member 12 is composed of the elastomer member formed into a plate shape.
  • the elastic member 12 is fixed to the support member 11 via the adhesive layer 13.
  • the elastomer member is as described above.
  • the JIS-A hardness of the elastic member 12 is preferably 67 to 90 °.
  • the rebound resilience of the elastic member 12 is preferably 10 to 50%.
  • the elastic member 12 is, for example, a member that slides on the contact surface on the machine tool side. In this case, the elastic member 12 is required to have a quick response for following the surface irregularities of the contact surface and a performance that does not generate an abnormal sound (buzzing sound) when sliding. These two performances are in a trade-off relationship. However, by setting the rebound resilience of the elastic member 12 in the above range, the above two performances can be achieved at the same time.
  • the rebound resilience is more preferably 20 to 40%.
  • the rebound resilience is a value measured according to JIS K 7312.
  • the adhesive layer 13 has a role of joining the support member 11 and the elastic member 12.
  • the adhesive layer 13 is not particularly limited as long as the elastic member 12 can be bonded to the support member 11 with sufficient adhesive force.
  • Examples of the adhesive layer 13 include EVA, polyamide, or polyurethane hot melt adhesives, those formed with a curable adhesive, and those formed with a double-sided tape.
  • the adhesive layer 13 is preferably formed of a urethane hot melt adhesive from the viewpoint of excellent bonding strength between the support member 11 and the elastic member 12.
  • the adhesive layer 13 is particularly preferably formed of a moisture curable urethane hot melt adhesive.
  • the adhesive layer 13 formed of the moisture-curing urethane hot melt adhesive does not melt or soften even when the machine tool seal member 10 becomes hot during use, and has stable adhesiveness. Can be maintained.
  • the moisture-curable urethane-based hot melt adhesive is applied and bonded in a molten state, and then reacts with moisture adhering to the surface of the elastic member and / or the support member, or moisture in the atmosphere, and gradually undergoes a crosslinking reaction.
  • An advancing adhesive that contains a urethane prepolymer includes a moisture-curing type comprising, for example, 30 to 50% by weight of a urethane prepolymer (for example, a polycarbonate-based urethane prepolymer), 0 to 70% by weight of a thermoplastic resin, and 0 to 50% by weight of a tackifier. Examples thereof include a urethane-based hot melt adhesive.
  • the urethane prepolymer has two or more isocyanate groups in the molecule and cures by reacting with moisture in the atmosphere.
  • the thermoplastic resin include saturated polyester.
  • the thermoplastic resin has the role of increasing the adhesive force by imparting crystallinity to the moisture-curable urethane hot melt adhesive and the plasticizer that can be applied at a temperature of about 120 to 140 ° C. Have a role.
  • the thermoplastic resin can impart excellent low temperature workability to the moisture curable urethane hot melt adhesive.
  • a commercial item can also be used as said moisture hardening type urethane type hot-melt-adhesive.
  • Examples of the commercially available products include Tyforce H-810, Tyforce H-850, Tyforce PUR-1S, Tyforce H-910, Tyforce FH-445, Tyforce FH-315SB, Tyforce FH-430, Examples include Tyforce FH-00SB (all manufactured by DIC), RHC-101, 5921 (manufactured by No-Tape Kogyo), Hibon 4836M, Hibon 4836S, Hibon 4836W (manufactured by Hitachi Chemical). Of these, tie force H-810 and tie force H-850 are preferred.
  • the thickness of the adhesive layer 13 is not particularly limited, but is preferably 50 to 500 ⁇ m.
  • the thickness is preferably 50 to 200 ⁇ m. If it is less than 50 ⁇ m, sufficient adhesive strength may not be ensured. On the other hand, if it exceeds 200 ⁇ m, the temperature and time may be excessively required for melting the hot melt adhesive.
  • the machine tool seal member 10 can be manufactured, for example, by the following method. (1) A steel plate or the like is used as a starting material, and after cutting into a predetermined size, bending processing or the like is performed as necessary to produce the support member 11. (2) Separately from the production of the support member 11 in (1) above, a sheet-like elastomer member made of a cured product of a thermosetting urethane composition is produced. Thereafter, the obtained elastomer member is cut into a predetermined size using an ultrasonic cutter or the like to produce the elastic member 12. The method for molding the elastomer member is as described above.
  • the shape of the elastic member 12 is a plate having a rectangular cross section, but in the machine tool seal member according to the embodiment of the present invention, The shape of the elastic member is not limited to such a shape.
  • the shape of the elastic member may be, for example, a shape in which the edge portion is subjected to C chamfering or R chamfering.
  • the elastic member may have a shape in which a cross-sectional shape (a shape of a surface perpendicular to the longitudinal direction) tapers continuously or intermittently toward the edge portion.
  • the machine tool seal member according to the embodiment of the present invention may be a machine tool seal member as shown in FIGS. Fig.2 (a) is a reverse view which shows another example of the sealing member for machine tools which concerns on embodiment of this invention, FIG.2 (b) is a side view of Fig.2 (a).
  • the machine tool seal member 20 includes a support member 21 made of a plate-like metal plate and an elastic member 22 integrally formed with the support member 21.
  • the elastic member 22 includes a main body portion 22A joined to the support member, and a lip portion 22B extending from the main body portion 22A and having an edge portion 22a that contacts the mating member.
  • the elastic member 22 is made of the elastomer member.
  • the sealing member 20 for machine tools can seal the predetermined part of a machine tool reliably, the edge part 22a of the elastic member 22 slidably contacts with an other party material.
  • the support member and the elastic member may be integrated without an adhesive layer.
  • the material of the support member 21 may be metal, ceramic, rigid plastic, or the like, similar to the support member 11 in the machine tool seal member 10 described above.
  • the elastic member 22 is the above-mentioned elastomer member, and its preferable physical properties are the same as those of the elastic member 12 in the machine tool seal member 10 described above.
  • a primer layer may be interposed between the support member 21 and the elastic member 22. Thereby, the adhesiveness of the support member 21 and the elastic member 22 can be improved more.
  • the machine tool seal member 20 is produced by placing the support member 21 at a predetermined position in the mold, and then casting an uncured thermosetting urethane composition and curing it under predetermined curing conditions. be able to.
  • the curing conditions of the thermosetting urethane composition are as described above.
  • the shape of the machine tool seal member according to the embodiment of the present invention is not limited to the shapes shown in FIGS. 1 (a), 1 (b), 2 (a), and 2 (b).
  • the said machine tool seal member should just have the same shape as the conventional machine tool seal members, such as a lip seal, a slide seal, a telescopic seal, and a cover seal.
  • a sealing member for a machine tool is used to protect a sliding portion or a sliding mechanism of a machine tool from cutting powder or coolant (cutting oil) in various machine tools such as a lathe or a machining center. It can be used as a seal member (wiper member). Specifically, for example, it can be used as a slide seal, a telescopic seal, a cover seal, a lip seal or the like.
  • FIG. 3 is a cross-sectional view schematically showing a part of the telescopic cover 100 to which the machine tool seal member 10 according to the embodiment of the present invention is attached.
  • the machine tool seal member 10 is fixed by bolting (not shown) the support member 11 to the lower surface of the outer front end portion of each cover member 15 constituting the telescopic cover 100.
  • the machine tool seal member 10 is attached to a position where the outer surface 15a of the cover member 15 located on the lower side and the end of the elastic member 12 are in sliding contact with each other.
  • the support member 11 is previously formed with a through hole for bolts (not shown).
  • the telescopic cover 100 in which the machine tool seal member 10 is attached to the outer front end portion of each cover member 15 prevents the chips and the like existing outside the telescopic cover 100 from entering the cover when the telescopic cover 100 is expanded or contracted. Can be prevented.
  • the use of the machine tool seal member according to the embodiment of the present invention is not limited to the telescopic seal.
  • the elastomer member according to the embodiment of the present invention can be used in addition to the elastic member of the machine tool seal member. Specifically, for example, it can be used for a transmission belt provided in a machine tool. In a machine tool, various members are configured to be driven using a transmission belt. Among the transmission belts used in the above machine tools, there is also a transmission belt arranged at a position exposed to the coolant. Such a transmission belt may be deteriorated (swelled or the additive is eluted) by being exposed to the coolant, or may be broken in some cases. On the other hand, if it is a transmission belt using the said elastomer member, degradation by the coolant mentioned above can be suppressed.
  • Example 1 100.00 parts by weight of MDI-PEA prepolymer (trade name “Samprene P-6814” manufactured by Sanyo Chemical Industries, Ltd.) heated to 110 ° C., 5.60 parts by weight of 1,4-BD (manufactured by Mitsubishi Chemical Corporation) And 0.76 parts by weight of TMP (Mitsubishi Gas Co., Ltd.) were added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did.
  • MDI-PEA prepolymer trade name “Samprene P-6814” manufactured by Sanyo Chemical Industries, Ltd.
  • 1,4-BD manufactured by Mitsubishi Chemical Corporation
  • TMP Mitsubishi Gas Co., Ltd.
  • one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
  • the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet.
  • the urethane sheet had a JIS-A hardness of 70 °.
  • the JIS-A hardness of the urethane sheet was measured in accordance with JIS K 7312, with 10 urethane sheets having a thickness of 1.5 mm stacked.
  • Example 2 A strip-shaped urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 6.36 parts by weight and the amount of TMP was changed to 0.20 parts by weight.
  • the urethane sheet had a JIS-A hardness of 80 °.
  • Example 3 MDI-PEA prepolymer heated to 110 ° C. (trade name “Samprene P-6814”, manufactured by Sanyo Chemical Industries, Ltd.) 100.00 parts by weight, 10.50 parts by weight of BHEB (Mitsubishi Chemical Fine), 1 , 4-BD (Mitsubishi Chemical Co., Ltd.) 1.59 parts by weight was added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did.
  • BHEB Mitsubishi Chemical Fine
  • 4-BD Mitsubishi Chemical Co., Ltd.
  • one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
  • the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet.
  • the urethane sheet had a JIS-A hardness of 90 °.
  • Example 4 100.00 parts by weight of PEA (manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Bulcolan 2000MM”) and 19.00 parts by weight of NDI (manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Desmodur 15”) in a vacuum reactor at 125 ° C. The mixture was reacted for 15 minutes with stirring to obtain a prepolymer. Next, to the obtained prepolymer, 2.50 parts by weight of 1,4-BD (Mitsubishi Chemical Co., Ltd.) was added and stirred and mixed, and then charged into a centrifugal molding machine.
  • PEA manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Bulcolan 2000MM”
  • NDI manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Desmodur 15”
  • the mold temperature was 130 ° C.
  • the crosslinking time was 60
  • Crosslinking was performed under the condition of minutes
  • a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded.
  • one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
  • the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet.
  • the urethane sheet had a JIS-A hardness of 80 °.
  • Example 5 A strip-like urethane sheet was obtained in the same manner as in Example 4 except that the amount of NDI was changed to 25.00 parts by weight and the amount of 1,4-BD was changed to 5.00 parts by weight.
  • the urethane sheet had a JIS-A hardness of 90 °.
  • Example 6 A strip-like urethane sheet was obtained in the same manner as in Example 4 except that the amount of NDI was changed to 40.00 parts by weight and the amount of 1,4-BD was changed to 11.00 parts by weight.
  • the urethane sheet had a JIS-A hardness of 96 °.
  • Example 7 A strip-like urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 4.58 parts by weight and the amount of TMP was changed to 1.79 parts by weight.
  • the urethane sheet had a JIS-A hardness of 67 °.
  • Table 1 shows the composition and JIS-A hardness of the urethane sheets prepared in Examples 1 to 7.
  • the obtained mixture was molded by the following method, and then cut to obtain a strip-shaped rubber sheet having the same size as in Example 1.
  • the rubber sheet had a JIS-A hardness of 80 °.
  • the raw rubber after kneading was processed into a raw rubber sheet having a thickness of 1.6 mm by a calender rolling machine, and the raw rubber sheet was set in a press mold having an area of 1.5 mm thickness ⁇ 400 mm ⁇ 100 mm. Thereafter, a method of obtaining a rubber cross-linked sheet by press cross-linking at 130 ° C. for 30 minutes was adopted.
  • the rubber sheet had a JIS-A hardness of 80 °.
  • the molding method is that after the kneaded raw rubber is processed into a 1.6 mm thick raw rubber sheet by a calender rolling machine, and the raw rubber sheet is set in a press mold having a 1.5 mm thickness ⁇ 400 mm ⁇ 100 mm area. The method of press-crosslinking for 30 minutes at 130 ° C. to obtain a rubber crosslinked sheet was adopted.
  • EPDM Mitsubishi Chemicals, trade name “EPT4045M” 100.00 parts by weight, diethylene glycol (Mitsubishi Chemical Co., Ltd.) 3.00 parts by weight, ethylene glycol (Kyoeisha Chemicals Co., Ltd., “Light Ester EG”) 3.00 parts by weight Parts, paraffin oil (made by Idemitsu Kosan Co., Ltd., trade name “Paraffin Oil H”) 5.00 parts by weight, silica (made by Tosoh Corporation, trade name “Nip Seal VN3”) 50.00 parts by weight, zinc oxide (Nippon Chemical Industry Co., Ltd.) 5.00 parts by weight) and 5.00 parts by weight of titanium oxide (manufactured by Sakai Chemical Industry Co., Ltd.) were kneaded in a rubber kneader for about 180 seconds until the temperature reached 155 ° C.
  • the mixture was molded by the following method and then cut to obtain a strip-shaped rubber sheet having the same size as that of Example 1.
  • the rubber sheet had a JIS-A hardness of 70 °.
  • the molding method is that after the kneaded raw rubber is processed into a 1.6 mm thick raw rubber sheet by a calender rolling machine, and the raw rubber sheet is set in a press mold having a 1.5 mm thickness x 600 mm x 100 mm area The method of press-crosslinking at 160 ° C. for 30 minutes to obtain a rubber crosslinked sheet was adopted.
  • Example 4 An MDI-PCL thermoplastic polyurethane (trade name “E595PNAT” manufactured by Nippon Milactolan Co., Ltd.) was molded by the following method and then cut to obtain a rectangular urethane sheet having the same size as in Example 1.
  • the urethane sheet had a JIS-A hardness of 93 °. Molding was carried out by extruding a sheet having a thickness of 1.5 mm and a width of 200 mm using an extruder using a T die having an injection width of 200 mm. At this time, the temperature of the die was 190 ° C.
  • one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
  • the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet.
  • the urethane sheet had a JIS-A hardness of 70 °.
  • one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
  • the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet.
  • the urethane sheet had a JIS-A hardness of 77 °.
  • the obtained urethane composition was put into a centrifugal molding machine and crosslinked under the conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes to form a cylindrical cured product with a thickness of 1.5 mm, and then removed. Typed. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet. Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 67 °.
  • Comparative Example 8 A strip-like urethane sheet was obtained in the same manner as in Comparative Example 7 except that the amount of carbodiimide-modified MDI was changed to 32.20 parts by weight and the amount of BHEB was changed to 13.00 parts by weight.
  • the urethane sheet had a JIS-A hardness of 85 °.
  • Example 9 A strip-shaped urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 3.82 parts by weight and the amount of TMP was changed to 2.54 parts by weight.
  • the urethane sheet had a JIS-A hardness of 65 °.
  • Table 2 shows the blends and JIS-A hardness of the rubber sheets and urethane sheets prepared in Comparative Examples 1 to 9.
  • Coolant A oil-based: Trade name “Daphne Marg Plus MP10” (made by Idemitsu Kosan Co., Ltd.)
  • Coolant B water-based: 10-fold diluted product of trade name “Clear Cut RH-1K” (manufactured by Neos)
  • Coolant C water-based: 10-fold diluted product name of “Neocool Bio-60E” (manufactured by Moresco) Goods
  • FIG. 4 (a) and 4 (b) are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant A (50 ° C.).
  • FIG. 4A shows the evaluation results of Examples 1 to 7.
  • FIG. 4B shows the evaluation results of Comparative Examples 1 to 9.
  • FIG. 5A and FIG. 5B are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant B (50 ° C.).
  • FIG. 5 (a) shows the evaluation results of Examples 1-7.
  • FIG. 5B shows the evaluation results of Comparative Examples 1 to 9.
  • 6 (a) and 6 (b) are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant C (50 ° C.).
  • FIG. 6 (a) shows the evaluation results of Examples 1-7.
  • FIG. 6B shows the evaluation results of Comparative Examples 1 and 2.
  • Weight increase rate is -5 to + 5%. Swelling: the weight increase rate is greater than 5%. Elution: the weight loss rate is greater than 5% (weight increase rate ⁇ -5%).
  • the elastomer members (or rubber members) of Comparative Examples 1 to 9 were swollen or eluted by any coolant.
  • a sealing member for a machine tool using an elastomer member (rubber member) having the same composition as that of each of the urethane sheet of Example 2 and the rubber sheet of Comparative Example 1 was produced. Specifically, for the urethane sheet of Example 2, first, the crosslinked sheet was cut into 20 mm ⁇ 600 mm and adhered to a metal support having a thickness of 1.2 mm and a length of 900 mm. Then, the edge part was cut into required length and angle, the hole for attachment was opened, and it was set as the sealing member.
  • FIGS. 7A and 7B are a photograph (left side) and a schematic view (right side) of the state of the edge part when using a machine tool seal member provided with the urethane sheet of Example 2 as an elastic member.
  • the lower part is after operation.
  • FIGS. 8A and 8B are a photograph (left side) and a schematic view (right side) of the state of the edge portion when using a machine tool seal member provided with the rubber sheet of Comparative Example 1 as an elastic member.
  • the lower part is after operation.
  • the sealing member for a machine tool using an elastomer member having the same composition as that of the urethane sheet of Example 2 as an elastic member was only slightly worn as shown in FIG.
  • the seal member for a machine tool having a rubber member having the same composition as that of the rubber sheet of Comparative Example 1 was significantly worn (about 1 mm). From these things, it became clear that the elastomer member (elastic member) using PEA as a polyol component is excellent in durability.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Sealing Material Composition (AREA)

Abstract

Provided are: an elastomer member which is suitable for use in a machine tool; and a sealing member for machine tools, which uses this elastomer member. This elastomer member is characterized by: being formed of a cured product of a thermosetting polyurethane composition; having a JIS-A hardness of 67° or more; and being used for a machine tool. This elastomer member is also characterized in that: the thermosetting polyurethane composition contains a polyol component, an isocyanate component and a crosslinking agent; and the polyol component is a polyethylene adipate ester polyol (PEA).

Description

エラストマー部材、及び、工作機械用シール部材Elastomer member and machine tool seal member
　本発明は、エラストマー部材、及び、工作機械用シール部材に関する。 The present invention relates to an elastomer member and a machine tool seal member.
　旋盤やマシニングセンターなどの工作機械は、製造産業で汎用されている最も基本的な機械装置である。これらの工作機械では、駆動機構等を切屑やクーラント（切削油）から保護するために、例えば、リップシール、スライドシール、テレスコシール、カバーシール等のシール部材が使用されている。
　工作機械用シール部材としては、支持部材と支持部材に一体化された弾性部材とを有するシール部材が知られている。 Machine tools such as lathes and machining centers are the most basic mechanical devices widely used in the manufacturing industry. In these machine tools, seal members such as a lip seal, a slide seal, a telescopic seal, and a cover seal are used to protect the drive mechanism and the like from chips and coolant (cutting oil).
As a sealing member for machine tools, a sealing member having a supporting member and an elastic member integrated with the supporting member is known.
　このようなシール部材は、弾性部材の材料として、クロロプレンゴム（ＣＲ）、アクリロニトリルゴム（ＮＢＲ）、水素化ニトリルゴム（Ｈ－ＮＢＲ）、スチレンブタジエンゴム（ＳＢＲ）、エチレン・プロピレンジエンモノマー（ＥＰＤＭ）等のゴム材料、ポリウレタン等の弾性材料などを用いることが提案されている（例えば、特許文献１参照）。 Such seal members are made of chloroprene rubber (CR), acrylonitrile rubber (NBR), hydrogenated nitrile rubber (H-NBR), styrene butadiene rubber (SBR), ethylene / propylene diene monomer (EPDM) It has been proposed to use a rubber material such as polyurethane or an elastic material such as polyurethane (for example, see Patent Document 1).
特開２０１４－８５７５号公報JP 2014-8575 A
　工作機械用シール部材は、上述したように、駆動機構をクーラント等から保護するための部材である。そのため、工作機械用シール部材は、使用時に、弾性部材がクーラントに晒される。
　クーラントに晒された弾性部材は、クーラントによって徐々に膨潤する。その結果、工作機械用シール部材はその機能を果たせなくなり、交換する必要が生じる。また、添加剤を含有する弾性部材がクーラントに晒された場合、上記添加剤が溶出することがある。その結果、弾性部材の物性が変化し、工作機械用シール部材の機能を果たせなくなることがある。
　上記クーラントは、大きく分けて不水溶性切削油と水溶性切削油とがあり、両者は特性が異なる。これに対して、従来の工作機械用シール部材の弾性部材は、（ａ）不水溶性切削油では膨潤、溶出しにくくても水溶性切削油では容易に膨潤又は溶出するものか、又は、（ｂ）水溶性切削油では膨潤、溶出しにくくても不水溶性切削油では容易に膨潤又は溶出するものばかりであった。即ち、不水溶性切削油及び水溶性切削油のいずれに対しても膨潤、溶出しにくい弾性部材は、これまで知られていなかった。 As described above, the machine tool seal member is a member for protecting the drive mechanism from coolant or the like. Therefore, the elastic member of the sealing member for machine tools is exposed to the coolant during use.
The elastic member exposed to the coolant is gradually swollen by the coolant. As a result, the sealing member for machine tools cannot perform its function and needs to be replaced. Moreover, when the elastic member containing an additive is exposed to a coolant, the said additive may elute. As a result, the physical properties of the elastic member may change, and the function of the machine tool seal member may not be achieved.
The coolant is roughly classified into a water-insoluble cutting oil and a water-soluble cutting oil, and both have different characteristics. On the other hand, the elastic member of the conventional sealing member for machine tools is (a) one that swells or elutes easily with water-soluble cutting oil even if it is difficult to swell and dissolve with water-insoluble cutting oil, or ( b) Even if it is difficult to swell and dissolve with water-soluble cutting oil, only water-soluble cutting oil easily swells or dissolves. That is, an elastic member that hardly swells and dissolves in both water-insoluble cutting oil and water-soluble cutting oil has not been known so far.
　本発明者らは、このような課題を解決すべく鋭意検討を行い、不水溶性切削油及び水溶性切削油のいずれのクーラントに対しても膨潤したり、添加剤が溶出したりしにくく、クーラントを使用する工作機械に好適に使用することができるエラストマー部材を見出し、本発明を完成した。 The present inventors have intensively studied to solve such a problem, it is difficult to swell to any coolant of water-insoluble cutting oil and water-soluble cutting oil, or the additive is difficult to elute, The present invention has been completed by finding an elastomer member that can be suitably used for a machine tool using a coolant.
　本発明のエラストマー部材は、熱硬化性ポリウレタン組成物の硬化物からなり、上記熱硬化性ポリウレタン組成物は、ポリオール成分、イソシアネート成分及び架橋剤を含有し、かつ、上記ポリオール成分がポリエチレンアジペートエステルポリオール（ＰＥＡ）であり、ＪＩＳ－Ａ硬さが６７°以上であり、工作機械に用いられること特徴とする。 The elastomer member of the present invention comprises a cured product of a thermosetting polyurethane composition, the thermosetting polyurethane composition contains a polyol component, an isocyanate component and a crosslinking agent, and the polyol component is a polyethylene adipate ester polyol. (PEA), which has a JIS-A hardness of 67 ° or more and is used for machine tools.
　上記エラストマー部材は、６７°以上のＪＩＳ－Ａ硬さを有する熱硬化性ウレタン組成物の硬化物からなるため、不水溶性切削油及び水溶性切削油のいずれのクーラントに対しても膨潤も溶出もしにくい。
　そのため、クーラントを使用する工作機械に好適に使用することができる。 Since the elastomer member is made of a cured product of a thermosetting urethane composition having a JIS-A hardness of 67 ° or more, it swells and dissolves in any water-insoluble cutting water or water-soluble cutting oil. It ’s hard.
Therefore, it can be suitably used for a machine tool that uses coolant.
　本発明の工作機械用シール部材は、支持部材と、上記支持部材に一体化された弾性部材とからなる工作機械用シール部材であって、上記弾性部材が、本発明のエラストマー部材からなることを特徴とする。
　上記工作機械用シール部材によれば、弾性部材がクーラントによって膨潤も溶出もしにくい本発明のエラストマー部材からなる。そのため、上記工作機械用シール部材は、クーラントに晒されても劣化しにくく、長期間に渡って優れたシール性能を維持することができる。 The sealing member for machine tools of the present invention is a sealing member for machine tools comprising a supporting member and an elastic member integrated with the supporting member, wherein the elastic member is composed of the elastomer member of the present invention. Features.
According to the above-mentioned sealing member for machine tools, the elastic member is made of the elastomer member of the present invention which is difficult to swell or elute by the coolant. Therefore, the sealing member for machine tools is not easily deteriorated even when exposed to the coolant, and can maintain excellent sealing performance for a long period of time.
　本発明のエラストマー部材は、不水溶性切削油、水溶性切削油を問わず切削油（クーラント）に対して優れた耐久性を有する。
　本発明の工作機械用シール部材は、本発明のエラストマー部材からなるため、長期間に渡って優れたシール性能を維持することができる。 The elastomer member of the present invention has excellent durability against cutting oil (coolant) regardless of water-insoluble cutting oil or water-soluble cutting oil.
Since the sealing member for machine tools of this invention consists of the elastomer member of this invention, it can maintain the outstanding sealing performance over a long period of time.
図１（ａ）は、本発明の実施形態に係る工作機械用シール部材の一例を示す平面図であり、図１（ｂ）は、図１（ａ）の側面図である。Fig.1 (a) is a top view which shows an example of the sealing member for machine tools which concerns on embodiment of this invention, FIG.1 (b) is a side view of Fig.1 (a). 図２（ａ）は、本発明の実施形態に係る工作機械用シール部材の別の一例を示す裏面図であり、図２（ｂ）は、図２（ａ）の側面図である。Fig.2 (a) is a reverse view which shows another example of the sealing member for machine tools which concerns on embodiment of this invention, FIG.2 (b) is a side view of Fig.2 (a). 本発明の実施形態に係る工作機械用シール部材を取り付けたテレスコカバーの一部を模式的に示す断面図である。It is sectional drawing which shows typically a part of telescopic cover which attached the sealing member for machine tools which concerns on embodiment of this invention. 図４（ａ）は、実施例で作製したシートをクーラントＡ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフであり、図４（ｂ）は、比較例で作製したシートをクーラントＡ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。FIG. 4A is a graph showing the immersion time and the weight increase rate when the sheet prepared in the example is immersed in the coolant A (50 ° C.), and FIG. 4B is the sheet prepared in the comparative example. It is a graph which shows the immersion time and weight increase rate at the time of immersing in a coolant A (50 degreeC). 図５（ａ）は、実施例で作製したシートをクーラントＢ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフであり、図５（ｂ）は、比較例で作製したシートをクーラントＢ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。FIG. 5A is a graph showing the immersion time and the weight increase rate when the sheet prepared in the example is immersed in the coolant B (50 ° C.), and FIG. 5B is the sheet manufactured in the comparative example. It is a graph which shows the immersion time and weight increase rate at the time of immersing in a coolant B (50 degreeC). 図６（ａ）は、実施例で作製したシートをクーラントＣ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフであり、図６（ｂ）は、比較例で作製したシートをクーラントＣ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。FIG. 6A is a graph showing the immersion time and the rate of weight increase when the sheet prepared in the example is immersed in the coolant C (50 ° C.), and FIG. 6B is the sheet manufactured in the comparative example. It is a graph which shows the immersion time and weight increase rate at the time of immersing in a coolant C (50 degreeC). 実施例２のウレタンシートを弾性部材とする工作機械用シール部材を使用した際のエッジ部の状態を撮影した写真及び模式図である。It is the photograph and schematic diagram which image | photographed the state of the edge part at the time of using the sealing member for machine tools which uses the urethane sheet of Example 2 as an elastic member. 比較例１のゴムシートを弾性部材とする工作機械用シール部材を使用した際のエッジ部の状態を撮影した写真及び模式図である。It is the photograph and schematic diagram which image | photographed the state of the edge part at the time of using the sealing member for machine tools which uses the rubber sheet of the comparative example 1 as an elastic member.
　以下、本発明の実施形態について説明する。
＜エラストマー部材＞
　本発明の実施形態に係るエラストマー部材は、熱硬化性ウレタン組成物の硬化物からなる。
　上記熱硬化性ウレタン組成物は、ポリオール成分、イソシアネート成分及び架橋剤を含有し、かつ、上記ポリオール成分がポリエチレンアジペートエステルポリオール（ＰＥＡ）である。
　上記エラストマー部材は、ポリオール成分がＰＥＡである熱硬化性ウレタン組成物の硬化物であるため、クーラントによる膨潤や溶出が発生しにくい。そのため、クーラントを使用する工作機械に使用した際に、クーラントに晒されたとしても長期間に渡って、その要求特性を満足することができる。 Hereinafter, embodiments of the present invention will be described.
<Elastomer member>
The elastomer member which concerns on embodiment of this invention consists of hardened | cured material of a thermosetting urethane composition.
The said thermosetting urethane composition contains a polyol component, an isocyanate component, and a crosslinking agent, and the said polyol component is a polyethylene adipate ester polyol (PEA).
Since the said elastomer member is a hardened | cured material of the thermosetting urethane composition whose polyol component is PEA, it is hard to generate | occur | produce swelling and elution by a coolant. Therefore, when used in a machine tool that uses coolant, the required characteristics can be satisfied over a long period of time even if it is exposed to the coolant.
　上記ＰＥＡは、数平均分子量が１０００～３０００であることが好ましい。数平均分子量が上記範囲内のＰＥＡを用いたエラストマー部材は、相手材との接触時に切り粉やクーラント等の侵入をより確実に防止することができる。
　上記数平均分子量は、ＧＰＣ（ゲルパーミエーションクロマトグラフ）測定によるポリスチレン換算の測定値である。 The PEA preferably has a number average molecular weight of 1000 to 3000. An elastomer member using PEA having a number average molecular weight within the above range can more reliably prevent intrusion of chips, coolant, and the like at the time of contact with the counterpart material.
The number average molecular weight is a measured value in terms of polystyrene by GPC (gel permeation chromatograph) measurement.
　上記熱硬化性ウレタン組成物は、ＰＥＡ（ポリオール成分）以外に、イソシアネート成分及び架橋剤を含有する。
　上記イソシアネート成分としては特に限定されず、例えば、脂肪族イソシアネート、脂環族イソシアネート、芳香族イソシアネート等が挙げられる。これらのなかでは、耐摩耗性が良好な点から、芳香族イソシアネートが好ましい。 The said thermosetting urethane composition contains an isocyanate component and a crosslinking agent other than PEA (polyol component).
It does not specifically limit as said isocyanate component, For example, aliphatic isocyanate, alicyclic isocyanate, aromatic isocyanate etc. are mentioned. Of these, aromatic isocyanates are preferred from the viewpoint of good wear resistance.
　上記脂肪族イソシアネートとしては、例えば、１，６－ヘキサメチレンジイソシアネート（ＨＤＩ）、２，２，４－トリメチルヘキサメチレンジイソシアネート、リジンジイソシアネート等が挙げられる。また、ヘキサメチレンジイソシアネートやイソホロンジイソシアネートのイソシアヌレート体、ビウレット体、アダクト体等も挙げられる。
　上記脂環族イソシアネートとしては、例えば、イソホロンジイソシアネート（ＩＰＤＩ）、４，４′－ジシクロヘキシルメタンジイソシアネート、１，４－シクロヘキサンジイソシアネート、ノルボルナンジイソシアネート（ＮＢＤＩ）等の脂環族ジイソシアネート等が挙げられる。
　上記芳香族イソシアネートとしては、例えば、トリレンジイソシアネート（ＴＤＩ）、フェニレンジイソシアネート、４，４′－ジフェニルメタンジイソシアネート，ポリメチレンポリフェニレンポリイソシアネート，ジフェニルメタンジイソシアネートとポリメチレンポリフェニレンポリイソシアネートとの混合物（以下、これらを総称してＭＤＩともいう）、１，５－ナフタレンジイソシアネート（ＮＤＩ）、キシリレンジイソシアネート（ＸＤＩ）、カルボジイミド変性ＭＤＩ、ウレタン変性ＭＤＩ等が挙げられる。
　これらのイソシアネート成分は、単独で用いてもよく、２種以上を併用してもよい。 Examples of the aliphatic isocyanate include 1,6-hexamethylene diisocyanate (HDI), 2,2,4-trimethylhexamethylene diisocyanate, and lysine diisocyanate. Moreover, the isocyanurate body, biuret body, adduct body, etc. of hexamethylene diisocyanate and isophorone diisocyanate are also mentioned.
Examples of the alicyclic isocyanate include alicyclic diisocyanates such as isophorone diisocyanate (IPDI), 4,4′-dicyclohexylmethane diisocyanate, 1,4-cyclohexane diisocyanate, norbornane diisocyanate (NBDI), and the like.
Examples of the aromatic isocyanate include tolylene diisocyanate (TDI), phenylene diisocyanate, 4,4'-diphenylmethane diisocyanate, polymethylene polyphenylene polyisocyanate, and a mixture of diphenylmethane diisocyanate and polymethylene polyphenylene polyisocyanate (hereinafter collectively referred to as generic names). And 1,5-naphthalene diisocyanate (NDI), xylylene diisocyanate (XDI), carbodiimide-modified MDI, urethane-modified MDI, and the like.
These isocyanate components may be used independently and may use 2 or more types together.
　上記イソシアネート成分としては、ＭＤＩやＮＤＩが好ましい。芳香族イソシアネートの中でも特に良好な耐摩耗性を発現するからである。 MDI and NDI are preferable as the isocyanate component. This is because, among aromatic isocyanates, particularly excellent wear resistance is exhibited.
　上記架橋剤としては、例えば、１，４－ブタンジオール（１，４－ＢＤ）、１，４－ビス（β－ヒドロキシエトキシ）ベンゼン（ＢＨＥＢ）、エチレングリコール、プロピレングリコール、ヘキサンジオール、ジエチレングリコール、トリメチロールプロパン（ＴＭＰ）、グリセリン、４，４’－メチレンビス（２－クロロアニリン）、ヒドラジン、エチレンジアミン、ジエチレントリアミン、４，４’－ジアミノジフェニルメタン、４，４’－ジアミノジシクロヘキシルメタン、Ｎ，Ｎ－ビス（２－ヒドロキシプロピル）アニリン、水等が挙げられる。
　これらのなかでは、適切なゴム硬度、ゴム剛性を発現させやすいことから、１，４－ブタンジオール、ＴＭＰ、ＢＨＥＢが好ましい。また、１，４－ブタンジオール、ＴＭＰ、又は、ＢＨＥＢを含む熱硬化性ウレタン組成物は、ポットライフが比較的長く、手注型でも成形することができる。
　上記架橋剤は、単独で用いてもよいし、２種以上併用してもよい。 Examples of the crosslinking agent include 1,4-butanediol (1,4-BD), 1,4-bis (β-hydroxyethoxy) benzene (BHEB), ethylene glycol, propylene glycol, hexanediol, diethylene glycol, triethylene glycol, and the like. Methylolpropane (TMP), glycerin, 4,4′-methylenebis (2-chloroaniline), hydrazine, ethylenediamine, diethylenetriamine, 4,4′-diaminodiphenylmethane, 4,4′-diaminodicyclohexylmethane, N, N-bis ( 2-hydroxypropyl) aniline, water and the like.
Among these, 1,4-butanediol, TMP, and BHEB are preferable because appropriate rubber hardness and rubber rigidity are easily exhibited. Further, a thermosetting urethane composition containing 1,4-butanediol, TMP, or BHEB has a relatively long pot life and can be molded by hand casting.
The said crosslinking agent may be used independently and may be used together 2 or more types.
　上記熱硬化性ウレタン組成物は、更に、鎖延長剤、架橋促進剤や架橋遅延剤等の反応助剤、加水分解防止剤、無機繊維や無機フィラー等の補強材、着色剤、光安定剤、熱安定剤、酸化防止剤、防黴剤、難燃剤、充填剤（増量剤）等の各種添加剤などを必要に応じて含有していてもよい。 The thermosetting urethane composition further includes chain extenders, reaction aids such as crosslinking accelerators and crosslinking retarders, hydrolysis inhibitors, reinforcing materials such as inorganic fibers and inorganic fillers, colorants, light stabilizers, Various additives such as a heat stabilizer, an antioxidant, an antifungal agent, a flame retardant, and a filler (a bulking agent) may be contained as necessary.
　上記熱硬化性ウレタン組成物におけるイソシアネート基濃度は、５．５０～１０．０重量％が好ましい。
　上記イソシアネート基濃度が、５．５０重量％未満では、上記エラストマー部材を後述する工作機械用シール部材の弾性部材として使用する際に、上記弾性部材の耐摩耗性が不充分となることがある。一方、上記イソシアネート基濃度が１０．０重量％を超えると、上記硬化物が硬度の高すぎるものとなり、摺動抵抗が大きくなってしまうことがある。
　上記イソシアネート基濃度（重量％）とは、イソシアネート成分、ポリオール成分、及び、架橋剤の合計量中に含まれるイソシアネート基の重量割合をいう。 The isocyanate group concentration in the thermosetting urethane composition is preferably 5.50 to 10.0% by weight.
When the isocyanate group concentration is less than 5.50% by weight, the wear resistance of the elastic member may be insufficient when the elastomer member is used as an elastic member of a machine tool seal member described later. On the other hand, if the isocyanate group concentration exceeds 10.0% by weight, the cured product may be too hard and the sliding resistance may increase.
The said isocyanate group density | concentration (weight%) means the weight ratio of the isocyanate group contained in the total amount of an isocyanate component, a polyol component, and a crosslinking agent.
　上記熱硬化性ウレタン組成物の硬化物は、ＪＩＳ－Ａ硬さ（ＪＩＳ　Ｋ　７３１２に準じて、スプリング式タイプＡ硬さ試験機により測定される値）が６７°以上である。
　上記硬化物のＪＩＳ－Ａ硬さが６７°未満の場合、上記硬化物の架橋点が少なく、クーラントに晒されることによる膨潤を充分に回避することができない。
　一方、上記硬化物のＪＩＳ－Ａ硬さの上限は特に限定されず、上記エラストマー部材の使用箇所を考慮して適宜選択すればよい。 The cured product of the thermosetting urethane composition has a JIS-A hardness (value measured by a spring type A hardness tester in accordance with JIS K 7312) of 67 ° or more.
When the JIS-A hardness of the cured product is less than 67 °, the cured product has few crosslinking points, and swelling due to exposure to coolant cannot be sufficiently avoided.
On the other hand, the upper limit of the JIS-A hardness of the cured product is not particularly limited, and may be appropriately selected in consideration of the use location of the elastomer member.
　上記硬化物のＪＩＳ－Ａ硬さは、上記エラストマー部材を後述する工作機械用シール部材の弾性部材として使用する場合、６７～９０゜が好ましい。上記硬化物のＪＩＳ－Ａ硬さが６７°未満では、上述した通り、クーラントに対する耐性が発現しないことがある。一方、上記硬化物のＪＩＳ－Ａ硬さが９０°を超えると、シール部の応力（圧接力）が大きくなり過ぎ、その結果、摺動抵抗が大きくなりすぎることがある。
　上記ＪＩＳ－Ａ硬さは、７０～８５°がより好ましい。 The JIS-A hardness of the cured product is preferably 67 to 90 ° when the elastomer member is used as an elastic member of a sealing member for a machine tool to be described later. When the JIS-A hardness of the cured product is less than 67 °, as described above, resistance to the coolant may not be exhibited. On the other hand, when the JIS-A hardness of the cured product exceeds 90 °, the stress (pressure contact force) of the seal portion becomes too large, and as a result, the sliding resistance may become too large.
The JIS-A hardness is more preferably 70 to 85 °.
　上記エラストマー部材は、上記熱硬化性ウレタン組成物を所定の条件で硬化させたものである。
　上記熱硬化性ウレタン組成物の硬化条件は特に限定されず、上記熱硬化性ウレタン組成物の組成に応じて適宜設定すればよい。上記硬化条件としては、通常、１００～１６０℃で３０～９０分間加熱する条件を採用することができる。
　また、上記条件で硬化処理を行い、金型等から脱型した後、１００～１６０℃で３～４８時間の条件で後硬化を行ってもよい。 The elastomer member is obtained by curing the thermosetting urethane composition under predetermined conditions.
The curing conditions for the thermosetting urethane composition are not particularly limited, and may be set as appropriate according to the composition of the thermosetting urethane composition. As the curing conditions, it is usually possible to employ conditions of heating at 100 to 160 ° C. for 30 to 90 minutes.
Further, after the curing treatment is performed under the above conditions and the mold is removed from the mold, post-curing may be performed at 100 to 160 ° C. for 3 to 48 hours.
　上記熱硬化性ウレタン組成物に含まれるイソシアネート成分及びポリオール成分は、上記熱硬化性ウレタン組成物を所定の条件で硬化させる前に、予め反応させてプレポリマーとしておいてもよい。 The isocyanate component and the polyol component contained in the thermosetting urethane composition may be pre-reacted to form a prepolymer before the thermosetting urethane composition is cured under predetermined conditions.
　上記エラストマー部材を得るための上記熱硬化性ウレタン組成物の成形方法は、特に限定されない。上記成形方法としては、例えば、常圧注型成形、減圧注型成形、遠心成形、連続回転成形、押出成形、射出成形、反応射出成形（ＲＩＭ）、スピンコーティング等が挙げられる。
　これらのなかでは、遠心成形、連続回転成形が好ましい。
　このようなエラストマー部材は、クーラントを使用する工作機械に好適に使用することができる。 The molding method of the thermosetting urethane composition for obtaining the elastomer member is not particularly limited. Examples of the molding method include normal pressure casting, reduced pressure casting, centrifugal molding, continuous rotational molding, extrusion molding, injection molding, reaction injection molding (RIM), spin coating, and the like.
Among these, centrifugal molding and continuous rotational molding are preferable.
Such an elastomer member can be suitably used for a machine tool using a coolant.
＜工作機械用シール部材＞
　本発明の実施形態に係るエラストマー部材は、支持部材と上記支持部材に一体化された弾性部材とからなる工作機械用シール部材において、上記弾性部材として好適に使用することができる。
　図１（ａ）は、本発明の実施形態に係る工作機械用シール部材の一例を示す平面図であり、図１（ｂ）は、図１（ａ）の側面図である。 <Seal materials for machine tools>
The elastomer member according to the embodiment of the present invention can be suitably used as the elastic member in a sealing member for a machine tool including a support member and an elastic member integrated with the support member.
Fig.1 (a) is a top view which shows an example of the sealing member for machine tools which concerns on embodiment of this invention, FIG.1 (b) is a side view of Fig.1 (a).
　図１（ａ）及び（ｂ）に示すように、工作機械用シール部材１０は、支持部材１１と弾性部材１２とを備える。
　支持部材１１は、略矩形状の金属板の長手方向に沿って屈曲させた加工金属板からなる。
　弾性部材１２は、支持部材１１の長手方向に沿って接着剤層１３を介して固定された板状の部材１２である。弾性部材１２は、上記エラストマー部材からなる。
　工作機械用シール部材１０は、弾性部材１２のエッジ部１２ａが相手材に摺動可能に接触し、それにより、工作機械の所定の箇所を確実にシールすることができる。 As shown in FIGS. 1A and 1B, the machine tool seal member 10 includes a support member 11 and an elastic member 12.
The support member 11 is made of a processed metal plate bent along the longitudinal direction of a substantially rectangular metal plate.
The elastic member 12 is a plate-like member 12 fixed via an adhesive layer 13 along the longitudinal direction of the support member 11. The elastic member 12 is made of the elastomer member.
In the machine tool seal member 10, the edge portion 12 a of the elastic member 12 is slidably in contact with the mating member, whereby a predetermined portion of the machine tool can be reliably sealed.
　支持部材１１は、通常、耐久性や強度の点からスチールやアルミニウム等の金属材料からなる。支持部材１１は、セラミックや剛性プラスチック等からなるものであってもよい。
　支持部材１１としては、表面無処理の鋼板、リン酸亜鉛処理やクロメート処理、錆止め樹脂処理等の表面処理の施された鋼板、りん青銅やばね鋼などの弾性金属板を加工したものを使用することもできる。
　支持部材１１は、接着剤層１３とのなじみ性を向上させるために、ウレタン系プライマー、シラン系プライマー等により予め表面処理が施されていてもよい。
　また、支持部材１１の表面（特に接着剤層１３を介して弾性部材１２と接する領域）は、粗面化処理が施されていてもよい。これにより、支持部材１１と接着剤層１３との密着性をアンカー効果により向上させることができる。 The support member 11 is usually made of a metal material such as steel or aluminum from the viewpoint of durability or strength. The support member 11 may be made of ceramic, rigid plastic, or the like.
As the support member 11, a non-surface treated steel plate, a steel plate subjected to surface treatment such as zinc phosphate treatment, chromate treatment, rust prevention resin treatment, or an elastic metal plate such as phosphor bronze or spring steel is used. You can also.
The support member 11 may be surface-treated in advance with a urethane-based primer, a silane-based primer, or the like in order to improve compatibility with the adhesive layer 13.
Further, the surface of the support member 11 (particularly the region in contact with the elastic member 12 via the adhesive layer 13) may be subjected to a roughening treatment. Thereby, the adhesiveness of the supporting member 11 and the adhesive bond layer 13 can be improved by an anchor effect.
　弾性部材１２は、板状に成形された上記エラストマー部材からなる。弾性部材１２は、接着剤層１３を介して支持部材１１に固定されている。上記エラストマー部材については、既に説明した通りである。
　弾性部材１２のＪＩＳ－Ａ硬さは、上述した通り、６７～９０゜が好ましい。 The elastic member 12 is composed of the elastomer member formed into a plate shape. The elastic member 12 is fixed to the support member 11 via the adhesive layer 13. The elastomer member is as described above.
As described above, the JIS-A hardness of the elastic member 12 is preferably 67 to 90 °.
　弾性部材１２の反発弾性は、１０～５０％が好ましい。
　弾性部材１２は、例えば、工作機械側の接触面上を摺動する部材である。この場合、弾性部材１２は、上記接触面の表面凹凸に追随するための即応性と、摺動時に異音（ビビり音）を発生させない性能とが求められる。これら２つの性能は、トレードオフの関係にある性能であるが、弾性部材１２の反発弾性を上記範囲とすることにより、上記の２つの性能を両立することができる。上記反発弾性は、２０～４０％がより好ましい。
　上記反発弾性は、ＪＩＳ　Ｋ　７３１２に準拠して測定された値である。 The rebound resilience of the elastic member 12 is preferably 10 to 50%.
The elastic member 12 is, for example, a member that slides on the contact surface on the machine tool side. In this case, the elastic member 12 is required to have a quick response for following the surface irregularities of the contact surface and a performance that does not generate an abnormal sound (buzzing sound) when sliding. These two performances are in a trade-off relationship. However, by setting the rebound resilience of the elastic member 12 in the above range, the above two performances can be achieved at the same time. The rebound resilience is more preferably 20 to 40%.
The rebound resilience is a value measured according to JIS K 7312.
　接着剤層１３は、支持部材１１と弾性部材１２とを接合させる役割を有する。接着剤層１３は、弾性部材１２を支持部材１１に充分な接着力で接合させることができるものであれば特に限定されない。
　接着剤層１３としては、例えば、ＥＶＡ系、ポリアミド系又はポリウレタン系のホットメルト接着剤や、硬化型接着剤等により形成されたもの、更には両面テープにより形成されたものなどが挙げられる。 The adhesive layer 13 has a role of joining the support member 11 and the elastic member 12. The adhesive layer 13 is not particularly limited as long as the elastic member 12 can be bonded to the support member 11 with sufficient adhesive force.
Examples of the adhesive layer 13 include EVA, polyamide, or polyurethane hot melt adhesives, those formed with a curable adhesive, and those formed with a double-sided tape.
　接着剤層１３は、支持部材１１と弾性部材１２との接合強度に優れる点からウレタン系ホットメルト接着剤により形成されたものが好ましい。接着剤層１３は、特に、湿気硬化型ウレタン系ホットメルト接着剤により形成されたものが好ましい。
　上記湿気硬化型ウレタン系ホットメルト接着剤により形成された接着剤層１３は、使用時に工作機械用シール部材１０が高温になった場合でも、溶融したり、軟化したりせず、安定した接着性を維持することができる。 The adhesive layer 13 is preferably formed of a urethane hot melt adhesive from the viewpoint of excellent bonding strength between the support member 11 and the elastic member 12. The adhesive layer 13 is particularly preferably formed of a moisture curable urethane hot melt adhesive.
The adhesive layer 13 formed of the moisture-curing urethane hot melt adhesive does not melt or soften even when the machine tool seal member 10 becomes hot during use, and has stable adhesiveness. Can be maintained.
　上記湿気硬化型ウレタン系ホットメルト接着剤とは、溶融した状態で塗布、接着した後、弾性部材及び／又は支持部材の表面に付着する水分や、雰囲気の水分と反応して徐々に架橋反応が進行する接着剤であり、ウレタンプレポリマーを含むものである。
　具体例としては、例えば、ウレタンプレポリマー（例えば、ポリカーボネート系ウレタンプレポリマー）３０～５０重量％、熱可塑性樹脂０～７０重量％、及び、粘着性付与剤０～５０重量％からなる湿気硬化型ウレタン系ホットメルト接着剤等が挙げられる。
　上記ウレタンプレポリマーは、分子中に２個以上のイソシアネート基を有し、雰囲気中の水分等と反応して硬化するものである。
　上記熱可塑性樹脂としては、例えば、飽和ポリエステル等が挙げられる。上記熱可塑性樹脂は、上記湿気硬化型ウレタン系ホットメルト接着剤において、結晶性を与えることにより接着力を上げる役割と、１２０～１４０℃程度の温度で塗布することができるようにする可塑剤の役割とを有する。上記熱可塑性樹脂は、上記湿気硬化型ウレタン系ホットメルト接着剤に優れた低温作業性を付与することができる。 The moisture-curable urethane-based hot melt adhesive is applied and bonded in a molten state, and then reacts with moisture adhering to the surface of the elastic member and / or the support member, or moisture in the atmosphere, and gradually undergoes a crosslinking reaction. An advancing adhesive that contains a urethane prepolymer.
Specific examples include a moisture-curing type comprising, for example, 30 to 50% by weight of a urethane prepolymer (for example, a polycarbonate-based urethane prepolymer), 0 to 70% by weight of a thermoplastic resin, and 0 to 50% by weight of a tackifier. Examples thereof include a urethane-based hot melt adhesive.
The urethane prepolymer has two or more isocyanate groups in the molecule and cures by reacting with moisture in the atmosphere.
Examples of the thermoplastic resin include saturated polyester. The thermoplastic resin has the role of increasing the adhesive force by imparting crystallinity to the moisture-curable urethane hot melt adhesive and the plasticizer that can be applied at a temperature of about 120 to 140 ° C. Have a role. The thermoplastic resin can impart excellent low temperature workability to the moisture curable urethane hot melt adhesive.
　上記湿気硬化型ウレタン系ホットメルト接着剤としては、市販品を使用することもできる。上記市販品としては、例えば、タイフォースＨ－８１０、タイフォースＨ－８５０、タイフォースＰＵＲ－１Ｓ、タイフォースＨ－９１０、タイフォースＦＨ－４４５、タイフォースＦＨ－３１５ＳＢ、タイフォースＦＨ－４３０、タイフォースＦＨ－００ＳＢ（いずれもＤＩＣ社製）、ＲＨＣ－１０１、５９２１（ノーテープ工業社製）、ハイボン４８３６Ｍ、ハイボン４８３６Ｓ、ハイボン４８３６Ｗ（日立化成ポリマー社製）等が挙げられる。
　これらのなかでは、タイフォースＨ－８１０、タイフォースＨ－８５０が好ましい。 A commercial item can also be used as said moisture hardening type urethane type hot-melt-adhesive. Examples of the commercially available products include Tyforce H-810, Tyforce H-850, Tyforce PUR-1S, Tyforce H-910, Tyforce FH-445, Tyforce FH-315SB, Tyforce FH-430, Examples include Tyforce FH-00SB (all manufactured by DIC), RHC-101, 5921 (manufactured by No-Tape Kogyo), Hibon 4836M, Hibon 4836S, Hibon 4836W (manufactured by Hitachi Chemical).
Of these, tie force H-810 and tie force H-850 are preferred.
　接着剤層１３の厚さは特に限定されないが、５０～５００μｍが好ましい。
　接着剤層１３がホットメルト接着剤からなる場合、その厚さは５０～２００μｍが好ましい。５０μｍ未満では、充分な接着強度を確保することができないことがある。一方、２００μｍを超えると、ホットメルト接着剤の溶融に、温度と時間を過剰に要することがある。 The thickness of the adhesive layer 13 is not particularly limited, but is preferably 50 to 500 μm.
When the adhesive layer 13 is made of a hot melt adhesive, the thickness is preferably 50 to 200 μm. If it is less than 50 μm, sufficient adhesive strength may not be ensured. On the other hand, if it exceeds 200 μm, the temperature and time may be excessively required for melting the hot melt adhesive.
　工作機械用シール部材１０は、例えば、以下の方法により製造することができる。
（１）鋼板等を出発材料とし、所定のサイズに裁断した後、必要に応じて折り曲げ加工等を施し、支持部材１１を作製する。
（２）上記（１）における支持部材１１の作製とは別に、熱硬化性ウレタン組成物の硬化物からなるシート状のエラストマー部材を作製する。その後、得られたエラストマー部材を超音波カッター等を用いて所定のサイズに裁断し、弾性部材１２を作製する。
　なお、エラストマー部材の成形方法は上述した通りである。
（３）支持部材１１及び弾性部材１２の少なくとも一方にアプリケータ等を用いて接着剤を塗布した後、両者を所定の位置で貼り合わせる。その後、必要に応じて加圧及び／又は養生する。
　このような工程を経ることにより、工作機械用シール部材１０を製造することができる。 The machine tool seal member 10 can be manufactured, for example, by the following method.
(1) A steel plate or the like is used as a starting material, and after cutting into a predetermined size, bending processing or the like is performed as necessary to produce the support member 11.
(2) Separately from the production of the support member 11 in (1) above, a sheet-like elastomer member made of a cured product of a thermosetting urethane composition is produced. Thereafter, the obtained elastomer member is cut into a predetermined size using an ultrasonic cutter or the like to produce the elastic member 12.
The method for molding the elastomer member is as described above.
(3) After applying an adhesive to at least one of the support member 11 and the elastic member 12 using an applicator or the like, the two are bonded together at a predetermined position. Thereafter, pressurization and / or curing is performed as necessary.
By passing through such a process, the machine tool sealing member 10 can be manufactured.
　図１（ａ）及び（ｂ）に示す工作機械用シール部材１０において、弾性部材１２の形状は、断面が長方形の板状であるが、本発明の実施形態に係る工作機械用シール部材において、上記弾性部材の形状はこのような形状に限定されない。上記弾性部材の形状は、例えば、上記エッジ部にＣ面取り又はＲ面取りが施された形状であってもよい。更に、上記弾性部材は、断面形状（長手方向に垂直な面の形状）がエッジ部に向かって連続的に又は断続的に先細りしていくような形状であってもよい。 In the machine tool seal member 10 shown in FIGS. 1A and 1B, the shape of the elastic member 12 is a plate having a rectangular cross section, but in the machine tool seal member according to the embodiment of the present invention, The shape of the elastic member is not limited to such a shape. The shape of the elastic member may be, for example, a shape in which the edge portion is subjected to C chamfering or R chamfering. Furthermore, the elastic member may have a shape in which a cross-sectional shape (a shape of a surface perpendicular to the longitudinal direction) tapers continuously or intermittently toward the edge portion.
　本発明の実施形態に係る工作機械用シール部材は、図２（ａ）及び（ｂ）に示したような工作機械用シール部材であってもよい。
　図２（ａ）は、本発明の実施形態に係る工作機械用シール部材の別の一例を示す裏面図であり、図２（ｂ）は、図２（ａ）の側面図である。 The machine tool seal member according to the embodiment of the present invention may be a machine tool seal member as shown in FIGS.
Fig.2 (a) is a reverse view which shows another example of the sealing member for machine tools which concerns on embodiment of this invention, FIG.2 (b) is a side view of Fig.2 (a).
　図２（ａ）及び（ｂ）に示すように、工作機械用シール部材２０は、板状の金属板からなる支持部材２１と、支持部材２１に一体成形された弾性部材２２とを備える。
　弾性部材２２は、支持部材と接合される本体部２２Ａと、本体部２２Ａから延設され、相手材に接触するエッジ部２２ａを有するリップ部２２Ｂとからなる。
　弾性部材２２は、上記エラストマー部材からなる。
　工作機械用シール部材２０は、弾性部材２２のエッジ部２２ａが相手材と摺動可能に接触し、確実に工作機械の所定の箇所をシールすることができる。
　このように、本発明の実施形態に係る工作機械用シール部材は、支持部材と弾性部材とが接着剤層を介さずに一体化されていてもよい。 As shown in FIGS. 2A and 2B, the machine tool seal member 20 includes a support member 21 made of a plate-like metal plate and an elastic member 22 integrally formed with the support member 21.
The elastic member 22 includes a main body portion 22A joined to the support member, and a lip portion 22B extending from the main body portion 22A and having an edge portion 22a that contacts the mating member.
The elastic member 22 is made of the elastomer member.
The sealing member 20 for machine tools can seal the predetermined part of a machine tool reliably, the edge part 22a of the elastic member 22 slidably contacts with an other party material.
Thus, in the sealing member for machine tools according to the embodiment of the present invention, the support member and the elastic member may be integrated without an adhesive layer.
　工作機械用シール部材２０において、支持部材２１の材質としては、上述した工作機械用シール部材１０における支持部材１１と同様、金属やセラミック、剛性プラスチック等を用いることができる。
　工作機械用シール部材２０において、弾性部材２２は上記エラストマー部材であり、その好ましい物性は、上述した工作機械用シール部材１０における弾性部材１２と同様である。
　なお、工作機械用シール部材２０において、支持部材２１と弾性部材２２との間には、プライマー層を介在させてもよい。これにより、支持部材２１と弾性部材２２との密着性をより向上させることができる。 In the machine tool seal member 20, the material of the support member 21 may be metal, ceramic, rigid plastic, or the like, similar to the support member 11 in the machine tool seal member 10 described above.
In the machine tool seal member 20, the elastic member 22 is the above-mentioned elastomer member, and its preferable physical properties are the same as those of the elastic member 12 in the machine tool seal member 10 described above.
In the machine tool seal member 20, a primer layer may be interposed between the support member 21 and the elastic member 22. Thereby, the adhesiveness of the support member 21 and the elastic member 22 can be improved more.
　工作機械用シール部材２０の作製は、金型内の所定の位置に支持部材２１を配置した後、未硬化の熱硬化性ウレタン組成物を注型し、所定の硬化条件で硬化させることにより行うことができる。
　ここで、熱硬化性ウレタン組成物の硬化条件は上述した通りである。 The machine tool seal member 20 is produced by placing the support member 21 at a predetermined position in the mold, and then casting an uncured thermosetting urethane composition and curing it under predetermined curing conditions. be able to.
Here, the curing conditions of the thermosetting urethane composition are as described above.
　本発明の実施形態に係る工作機械用シール部材の形状は、図１（ａ）、（ｂ）及び図２（ａ）、（ｂ）に示した形状に限定されない。上記工作機械用シール部材は、リップシール、スライドシール、テレスコシール、カバーシール等の従来の工作機械用シール部材と同様の形状を有するものであればよい。 The shape of the machine tool seal member according to the embodiment of the present invention is not limited to the shapes shown in FIGS. 1 (a), 1 (b), 2 (a), and 2 (b). The said machine tool seal member should just have the same shape as the conventional machine tool seal members, such as a lip seal, a slide seal, a telescopic seal, and a cover seal.
　本発明の実施形態に係る工作機械用シール部材は、旋盤やマシニングセンター等の種々の工作機械において、工作機械の摺動個所や摺動機構等を切り粉やクーラント（切削油）から保護するためのシール部材（ワイパー部材）として使用することができる。具体的には、例えば、スライドシール、テレスコシール、カバーシール、リップシール等として使用することができる。 A sealing member for a machine tool according to an embodiment of the present invention is used to protect a sliding portion or a sliding mechanism of a machine tool from cutting powder or coolant (cutting oil) in various machine tools such as a lathe or a machining center. It can be used as a seal member (wiper member). Specifically, for example, it can be used as a slide seal, a telescopic seal, a cover seal, a lip seal or the like.
　以下、本発明の実施形態に係る工作機械用シール部材をテレスコシールとして使用する場合を例に、その使用例を説明する。図３は、本発明の実施形態に係る工作機械用シール部材１０を取り付けたテレスコカバー１００の一部を模式的に示す断面図である。
　図３に示すように、工作機械用シール部材１０は、テレスコカバー１００を構成する各カバー部材１５の外側先端部の下面に支持部材１１をボルト締め（図示せず）することで固定する。このとき、工作機械用シール部材１０は、下側に位置するカバー部材１５の外面１５ａと、弾性部材１２の端部とが確実に摺接する位置に取り付けられる。
　なお、支持部材１１には、ボルト用の貫通孔（図示せず）を予め形成しておく。
　このように各カバー部材１５の外側先端部に工作機械用シール部材１０を取り付けたテレスコカバー１００は、テレスコカバー１００の伸縮時にテレスコカバー１００の外側に存在する切り粉等がカバー内へ入り込むことを防止することができる。
　勿論、本発明の実施形態に係る工作機械用シール部材の用途は、テレスコシールに限定されない。 Hereinafter, an example of using the sealing member for a machine tool according to the embodiment of the present invention as a telescopic seal will be described as an example. FIG. 3 is a cross-sectional view schematically showing a part of the telescopic cover 100 to which the machine tool seal member 10 according to the embodiment of the present invention is attached.
As shown in FIG. 3, the machine tool seal member 10 is fixed by bolting (not shown) the support member 11 to the lower surface of the outer front end portion of each cover member 15 constituting the telescopic cover 100. At this time, the machine tool seal member 10 is attached to a position where the outer surface 15a of the cover member 15 located on the lower side and the end of the elastic member 12 are in sliding contact with each other.
The support member 11 is previously formed with a through hole for bolts (not shown).
In this way, the telescopic cover 100 in which the machine tool seal member 10 is attached to the outer front end portion of each cover member 15 prevents the chips and the like existing outside the telescopic cover 100 from entering the cover when the telescopic cover 100 is expanded or contracted. Can be prevented.
Of course, the use of the machine tool seal member according to the embodiment of the present invention is not limited to the telescopic seal.
　本発明の実施形態に係るエラストマー部材は、工作機械用シール部材の弾性部材以外にも使用することができる。具体的には、例えば、工作機械が備える伝動ベルト等にも使用することができる。
　工作機械では、種々の部材が伝動ベルトを用いて駆動するように構成されている。上記工作機械に用いられる伝動ベルトのなかには、クーラントに晒される位置に配置された伝動ベルトもある。このような伝動ベルトは、クーラントに晒されることによって劣化（膨潤する、又は、添加剤が溶出する）したり、場合によっては破断したりすることがある。これに対して、上記エラストマー部材を用いた伝動ベルトであれば、上述したクーラントによる劣化を抑制することができる。 The elastomer member according to the embodiment of the present invention can be used in addition to the elastic member of the machine tool seal member. Specifically, for example, it can be used for a transmission belt provided in a machine tool.
In a machine tool, various members are configured to be driven using a transmission belt. Among the transmission belts used in the above machine tools, there is also a transmission belt arranged at a position exposed to the coolant. Such a transmission belt may be deteriorated (swelled or the additive is eluted) by being exposed to the coolant, or may be broken in some cases. On the other hand, if it is a transmission belt using the said elastomer member, degradation by the coolant mentioned above can be suppressed.
　以下、実施例によって本発明の実施形態をさらに具体的に説明するが、本発明は以下の実施例に限定されるものではない。 Hereinafter, embodiments of the present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples.
（実施例１）
　１１０℃に加温したＭＤＩ－ＰＥＡプレポリマー（三洋化成工業社製、商品名「サンプレンＰ－６８１４」）１００．００重量部に、１，４－ＢＤ（三菱化学社製）５．６０重量部と、ＴＭＰ（三菱ガス社製）０．７６重量部とを加えて撹拌混合してウレタン組成物を調製した。直後に得られたウレタン組成物を遠心成形機に投入し、金型温度１５０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、７０°であった。
　なお、上記ウレタンシートのＪＩＳ－Ａ硬さは、ＪＩＳ　Ｋ　７３１２に準拠し、厚さ１．５ｍｍのウレタンシートを１０枚重ねて測定した。 Example 1
100.00 parts by weight of MDI-PEA prepolymer (trade name “Samprene P-6814” manufactured by Sanyo Chemical Industries, Ltd.) heated to 110 ° C., 5.60 parts by weight of 1,4-BD (manufactured by Mitsubishi Chemical Corporation) And 0.76 parts by weight of TMP (Mitsubishi Gas Co., Ltd.) were added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 70 °.
The JIS-A hardness of the urethane sheet was measured in accordance with JIS K 7312, with 10 urethane sheets having a thickness of 1.5 mm stacked.
（実施例２）
　１，４－ＢＤの配合量を６．３６重量部に変更し、ＴＭＰの配合量を０．２０重量部に変更した以外は、実施例１と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、８０°であった。 (Example 2)
A strip-shaped urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 6.36 parts by weight and the amount of TMP was changed to 0.20 parts by weight. The urethane sheet had a JIS-A hardness of 80 °.
（実施例３）
　１１０℃に加温したＭＤＩ－ＰＥＡプレポリマー（三洋化成工業社製、商品名「サンプレンＰ－６８１４」）１００．００重量部に、ＢＨＥＢ（三菱化学ファイン社製）１０．５０重量部と、１，４－ＢＤ（三菱化学社製）１．５９重量部とを加えて撹拌混合してウレタン組成物を調製した。直後に得られたウレタン組成物を遠心成形機に投入し、金型温度１５０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、９０°であった。 (Example 3)
MDI-PEA prepolymer heated to 110 ° C. (trade name “Samprene P-6814”, manufactured by Sanyo Chemical Industries, Ltd.) 100.00 parts by weight, 10.50 parts by weight of BHEB (Mitsubishi Chemical Fine), 1 , 4-BD (Mitsubishi Chemical Co., Ltd.) 1.59 parts by weight was added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 90 °.
（実施例４）
　ＰＥＡ（住友バイエルウレタン社製、商品名「ブルコラン２０００ＭＭ」）１００．００重量部及びＮＤＩ（住友バイエルウレタン社製、商品名「デスモジュール１５」）１９．００重量部を１２５℃の真空反応槽で撹拌しつつ１５分間反応させてプレポリマーを得た。次に、得られたプレポリマーに、１，４－ＢＤ（三菱化学社製）２．５０重量部を加えて撹拌混合した後、遠心成形機に投入し、金型温度１３０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、８０°であった。 Example 4
100.00 parts by weight of PEA (manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Bulcolan 2000MM”) and 19.00 parts by weight of NDI (manufactured by Sumitomo Bayer Urethane Co., Ltd., trade name “Desmodur 15”) in a vacuum reactor at 125 ° C. The mixture was reacted for 15 minutes with stirring to obtain a prepolymer. Next, to the obtained prepolymer, 2.50 parts by weight of 1,4-BD (Mitsubishi Chemical Co., Ltd.) was added and stirred and mixed, and then charged into a centrifugal molding machine. The mold temperature was 130 ° C., the crosslinking time was 60 Crosslinking was performed under the condition of minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 80 °.
（実施例５）
　ＮＤＩの配合量を２５．００重量部に変更し、１，４－ＢＤの配合量を５．００重量部に変更した以外は、実施例４と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、９０°であった。 (Example 5)
A strip-like urethane sheet was obtained in the same manner as in Example 4 except that the amount of NDI was changed to 25.00 parts by weight and the amount of 1,4-BD was changed to 5.00 parts by weight. The urethane sheet had a JIS-A hardness of 90 °.
（実施例６）
　ＮＤＩの配合量を４０．００重量部に変更し、１，４－ＢＤの配合量を１１．００重量部に変更した以外は、実施例４と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、９６°であった。 (Example 6)
A strip-like urethane sheet was obtained in the same manner as in Example 4 except that the amount of NDI was changed to 40.00 parts by weight and the amount of 1,4-BD was changed to 11.00 parts by weight. The urethane sheet had a JIS-A hardness of 96 °.
（実施例７）
　１，４－ＢＤの配合量を４．５８重量部に変更し、ＴＭＰの配合量を１．７９重量部に変更した以外は、実施例１と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、６７°であった。 (Example 7)
A strip-like urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 4.58 parts by weight and the amount of TMP was changed to 1.79 parts by weight. The urethane sheet had a JIS-A hardness of 67 °.
　実施例１～７で作製したウレタンシートについて、配合物及びＪＩＳ－Ａ硬さを表１に示した。 Table 1 shows the composition and JIS-A hardness of the urethane sheets prepared in Examples 1 to 7.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
（比較例１）
　ＮＢＲ（日本ゼオン社製、商品名「ニッポール１０３１」）１００．００重量部、フタル酸ビス（２－エチルへキシル）（三菱化学社製）５．００重量部、カーボンブラック（東海カーボン社製、商品名「ＩＳＡＦ」）８４．００重量部、酸化亜鉛（日本化学工業社製、商品名「酸化亜鉛」）５．００重量部、酸化亜鉛（井上石灰工業社製、商品名「メタＺＬ－５０」）５．００重量部、及び、硫黄（細井化学工業社製、商品名「オイルサルファー」）０．４０重量部をゴム混練機にて混練時の到達温度１３５℃になるまで約１２０秒間混練した後、得られた混合物を下記の方法で成形し、その後、裁断して実施例１と同サイズの短冊状のゴムシートを得た。上記ゴムシートのＪＩＳ－Ａ硬さは、８０°であった。
　成形方法としては、混錬後の生ゴムをカレンダー圧延機にて１．６ｍｍ厚さの生ゴムシートに加工し、１．５ｍｍ厚さ×４００ｍｍ×１００ｍｍ面積のプレス金型内に上記生ゴムシートをセットした後、１３０℃にて３０分間プレス架橋し、ゴム架橋シートを得る方法を採用した。 (Comparative Example 1)
NBR (made by Nippon Zeon Co., Ltd., trade name “Nippol 1031”) 100.00 parts by weight, bis (2-ethylhexyl) phthalate (Mitsubishi Chemical Corporation) 5.00 parts by weight, carbon black (made by Tokai Carbon Co., Ltd., Product name “ISAF”) 84.00 parts by weight, zinc oxide (manufactured by Nippon Chemical Industry Co., Ltd., product name “Zinc Oxide”) 5.00 parts by weight, zinc oxide (Inoue Lime Industry Co., Ltd., product name “Meta ZL-50” “) 5.00 parts by weight and sulfur (trade name“ OIL SULFUR ”, manufactured by Hosoi Chemical Co., Ltd.) 0.40 parts by weight were kneaded for about 120 seconds until the temperature reached 135 ° C. during kneading in a rubber kneader. After that, the obtained mixture was molded by the following method, and then cut to obtain a strip-shaped rubber sheet having the same size as in Example 1. The rubber sheet had a JIS-A hardness of 80 °.
As a molding method, the raw rubber after kneading was processed into a raw rubber sheet having a thickness of 1.6 mm by a calender rolling machine, and the raw rubber sheet was set in a press mold having an area of 1.5 mm thickness × 400 mm × 100 mm. Thereafter, a method of obtaining a rubber cross-linked sheet by press cross-linking at 130 ° C. for 30 minutes was adopted.
（比較例２）
　水素化ＮＢＲ（日本ゼオン社製、商品名「ゼットポール２０２１」）１００．００重量部、有機過酸化物（日油社製、商品名「ペロキシモンＦ４０」）６．００重量部、トリメチロールプロパントリメタクリレート（精工化学社製、商品名「ハイクロスＭ」）３．００重量部、ステアリン酸亜鉛（川村化成工業社製、商品名「ステアリン酸」）１．００重量部、カーボンブラック（昭和キャボット社製、商品名「ＩＰ２００」）６０．００重量部、及び、酸化亜鉛（日本化学工業社製、商品名「酸化亜鉛」）１０．００重量部をゴム混練機にて混練時の到達温度１３５℃になるまで約１２０秒間混練した後、得られた混合物を下記の方法で成形し、その後、裁断して実施例１と同サイズの短冊状のゴムシートを得た。上記ゴムシートのＪＩＳ－Ａ硬さは８０°であった。
　成形方法は、混錬後の生ゴムをカレンダー圧延機にて１．６ｍｍ厚さの生ゴムシートに加工し、１．５ｍｍ厚さ×４００ｍｍ×１００ｍｍ面積のプレス金型内に上記生ゴムシートをセットした後、１３０℃にて３０分間プレス架橋し、ゴム架橋シートを得る方法を採用した。 (Comparative Example 2)
Hydrogenated NBR (manufactured by Nippon Zeon Co., Ltd., trade name “Zetpol 2021”) 100.00 parts by weight, organic peroxide (manufactured by NOF Corporation, trade name “Peroximon F40”) 6.00 parts by weight, trimethylolpropane tri 3.00 parts by weight of methacrylate (made by Seiko Chemical Co., Ltd., trade name “Hicross M”), 1.00 parts by weight of zinc stearate (made by Kawamura Kasei Kogyo Co., Ltd., trade name “stearic acid”), carbon black (Showa Cabot Corporation) Product name "IP200") 60.00 parts by weight and zinc oxide (manufactured by Nippon Chemical Industry Co., Ltd., trade name "Zinc Oxide") 10.00 parts by weight in a rubber kneader at an ultimate temperature of 135 ° After kneading for about 120 seconds until it became, the obtained mixture was molded by the following method, and then cut to obtain a strip-shaped rubber sheet having the same size as in Example 1. The rubber sheet had a JIS-A hardness of 80 °.
The molding method is that after the kneaded raw rubber is processed into a 1.6 mm thick raw rubber sheet by a calender rolling machine, and the raw rubber sheet is set in a press mold having a 1.5 mm thickness × 400 mm × 100 mm area. The method of press-crosslinking for 30 minutes at 130 ° C. to obtain a rubber crosslinked sheet was adopted.
（比較例３）
　ＥＰＤＭ（三井化学社製、商品名「ＥＰＴ４０４５Ｍ」）１００．００重量部、ジエチレングリコール（三菱化学社製）３．００重量部、エチレングリコール（共栄社化学社製、「ライトエステルＥＧ」）３．００重量部、パラフィンオイル（出光興産社製、商品名「パラフィンオイルＨ」）５．００重量部、シリカ（東ソー社製、商品名「ニップシールＶＮ３」）５０．００重量部、酸化亜鉛（日本化学工業社製）５．００重量部、及び、酸化チタン（堺化学工業社製）５．００重量部をゴム混練機にて混練時の到達温度１５５℃になるまで約１８０秒間混練した後、得られた混合物を下記の方法で成形し、その後、裁断して実施例１と同サイズの短冊状のゴムシートを得た。上記ゴムシートのＪＩＳ－Ａ硬さは７０°であった。
　成形方法は、混錬後の生ゴムをカレンダー圧延機にて１．６ｍｍ厚さの生ゴムシートに加工し、１．５ｍｍ厚さ×６００ｍｍ×１００ｍｍ面積のプレス金型内に上記生ゴムシートをセットした後、１６０℃にて３０分間プレス架橋し、ゴム架橋シートを得る方法を採用した。 (Comparative Example 3)
EPDM (Mitsui Chemicals, trade name “EPT4045M”) 100.00 parts by weight, diethylene glycol (Mitsubishi Chemical Co., Ltd.) 3.00 parts by weight, ethylene glycol (Kyoeisha Chemicals Co., Ltd., “Light Ester EG”) 3.00 parts by weight Parts, paraffin oil (made by Idemitsu Kosan Co., Ltd., trade name “Paraffin Oil H”) 5.00 parts by weight, silica (made by Tosoh Corporation, trade name “Nip Seal VN3”) 50.00 parts by weight, zinc oxide (Nippon Chemical Industry Co., Ltd.) 5.00 parts by weight) and 5.00 parts by weight of titanium oxide (manufactured by Sakai Chemical Industry Co., Ltd.) were kneaded in a rubber kneader for about 180 seconds until the temperature reached 155 ° C. during kneading was obtained. The mixture was molded by the following method and then cut to obtain a strip-shaped rubber sheet having the same size as that of Example 1. The rubber sheet had a JIS-A hardness of 70 °.
The molding method is that after the kneaded raw rubber is processed into a 1.6 mm thick raw rubber sheet by a calender rolling machine, and the raw rubber sheet is set in a press mold having a 1.5 mm thickness x 600 mm x 100 mm area The method of press-crosslinking at 160 ° C. for 30 minutes to obtain a rubber crosslinked sheet was adopted.
（比較例４）
　ＭＤＩ－ＰＣＬ系熱可塑性ポリウレタン（日本ミラクトラン社製、商品名「Ｅ５９５ＰＮＡＴ」）を下記の方法で成形した後、裁断し、実施例１と同サイズの短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、９３°であった。
　成形は、射出幅２００ｍｍのＴダイを使用した押し出し機を使用し、厚さ１．５ｍｍ、幅２００ｍｍのシートを押出成形することにより行った。このとき、ダイの温度は１９０℃とした。 (Comparative Example 4)
An MDI-PCL thermoplastic polyurethane (trade name “E595PNAT” manufactured by Nippon Milactolan Co., Ltd.) was molded by the following method and then cut to obtain a rectangular urethane sheet having the same size as in Example 1. The urethane sheet had a JIS-A hardness of 93 °.
Molding was carried out by extruding a sheet having a thickness of 1.5 mm and a width of 200 mm using an extruder using a T die having an injection width of 200 mm. At this time, the temperature of the die was 190 ° C.
（比較例５）
　１１０℃に加温したＭＤＩ－ＰＴＭＧプレポリマー（東ソー社製、商品名「コロネート４３６２」）１００．００重量部に、１，４－ＢＤ（三菱化学社製）４．４１重量部と、ＴＭＰ（三菱ガス社製）１．１０重量部とを加えて撹拌混合してウレタン組成物を調製した。直後に得られたウレタン組成物を遠心成形機に投入し、金型温度１５０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、７０°であった。 (Comparative Example 5)
To 100.00 parts by weight of MDI-PTMG prepolymer (trade name “Coronate 4362” manufactured by Tosoh Corporation) heated to 110 ° C., 4.41 parts by weight of 1,4-BD (manufactured by Mitsubishi Chemical Corporation) and TMP ( 1.10 parts by weight (Mitsubishi Gas Co., Ltd.) was added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 70 °.
（比較例６）
　１１０℃に加温したＭＤＩ－ＰＣＬプレポリマー（三洋化成工業社製、商品名「サンプレンＰ－６９０３」）１００．００重量部に、１，４－ＢＤ（三菱化学社製）６．１７重量部と、ＴＭＰ（三菱ガス社製）１．５４重量部とを加えて撹拌混合してウレタン組成物を調製した。直後に得られたウレタン組成物を遠心成形機に投入し、金型温度１５０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、７７°であった。 (Comparative Example 6)
MDI-PCL prepolymer heated to 110 ° C. (trade name “Samprene P-6903”, manufactured by Sanyo Chemical Industries, Ltd.) 100.00 parts by weight, 6.17 parts by weight of 1,4-BD (manufactured by Mitsubishi Chemical Corporation) And 1.54 parts by weight of TMP (Mitsubishi Gas Co., Ltd.) were added and mixed by stirring to prepare a urethane composition. Immediately after, the urethane composition obtained was put into a centrifugal molding machine, crosslinked under conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes, a cylindrical cured product having a thickness of 1.5 mm was molded, and then demolded did. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 77 °.
（比較例７）
　ＤＥＧ－ＰＥＳ（東ソー社製、商品名「ニッポラン４７０６」）１００．００重量部及びカルボジイミド変性ＭＤＩ（三井化学社製、商品名「タケネートＬＳＩ－１４Ｐ」）２２．２０重量部をアジテータにて混合した。次に、得られた混合物に、ＢＨＥＢ（三菱化学ファイン社製）６．７０重量部と、及びＴＭＰ（三菱ガス化学社製）０．５０重量部とを加えて撹拌混合してウレタン組成物を調製した。続いて、得られたウレタン組成物を遠心成形機に投入し、金型温度１５０℃、架橋時間６０分間の条件で架橋させ、厚さ１．５ｍｍで円筒状の硬化物を成型した後、脱型した。その後、円筒状の硬化物の一か所を切断して板形に展開し、送風オーブン内にて１１０℃、２４時間の条件で後架橋を行い、ポリウレタン製原反シートを得た。
　次に、上記原反シートを縦１２ｍｍ×横４９ｍｍにカットし、短冊状のウレタンシートとした。上記ウレタンシートのＪＩＳ－Ａ硬さは、６７°であった。 (Comparative Example 7)
DEG-PES (manufactured by Tosoh Corporation, trade name “Nipporan 4706”) 100.00 parts by weight and carbodiimide-modified MDI (manufactured by Mitsui Chemicals, trade name “Takenate LSI-14P”) 22.20 parts by weight were mixed in an agitator. . Next, 6.70 parts by weight of BHEB (Mitsubishi Chemical Fine Co., Ltd.) and 0.50 part by weight of TMP (Mitsubishi Gas Chemical Co., Ltd.) are added to the resulting mixture and mixed by stirring to obtain a urethane composition. Prepared. Subsequently, the obtained urethane composition was put into a centrifugal molding machine and crosslinked under the conditions of a mold temperature of 150 ° C. and a crosslinking time of 60 minutes to form a cylindrical cured product with a thickness of 1.5 mm, and then removed. Typed. Thereafter, one portion of the cylindrical cured product was cut and developed into a plate shape, followed by post-crosslinking in a blast oven at 110 ° C. for 24 hours to obtain a polyurethane raw sheet.
Next, the original fabric sheet was cut into a length of 12 mm and a width of 49 mm to obtain a strip-shaped urethane sheet. The urethane sheet had a JIS-A hardness of 67 °.
（比較例８）
　カルボジイミド変性ＭＤＩの配合量を３２．２０重量部に変更し、ＢＨＥＢの配合量を１３．００重量部に変更した以外は比較例７と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、８５°であった。 (Comparative Example 8)
A strip-like urethane sheet was obtained in the same manner as in Comparative Example 7 except that the amount of carbodiimide-modified MDI was changed to 32.20 parts by weight and the amount of BHEB was changed to 13.00 parts by weight. The urethane sheet had a JIS-A hardness of 85 °.
（比較例９）
　１，４－ＢＤの配合量を３．８２重量部に変更し、ＴＭＰの配合量を２．５４重量部に変更した以外は、実施例１と同様にして短冊状のウレタンシートを得た。上記ウレタンシートのＪＩＳ－Ａ硬さは、６５°であった。 (Comparative Example 9)
A strip-shaped urethane sheet was obtained in the same manner as in Example 1 except that the amount of 1,4-BD was changed to 3.82 parts by weight and the amount of TMP was changed to 2.54 parts by weight. The urethane sheet had a JIS-A hardness of 65 °.
　比較例１～９で作製したゴムシート及びウレタンシートについて、配合物及びＪＩＳ－Ａ硬さを表２に示した。 Table 2 shows the blends and JIS-A hardness of the rubber sheets and urethane sheets prepared in Comparative Examples 1 to 9.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
［耐クーラント性の評価］
　実施例及び比較例で作製したシート（ウレタンシート又はゴムシート）について、クーラントに対する耐久性を評価した。
　ここでは、下記の３種類のクーラントを使用し、これらに対する耐久性を評価した。
　クーラントＡ（油系）：商品名「ダフニーマーグプラスＭＰ１０」（出光興産社製）
　クーラントＢ（水系）：商品名「クリアカット　Ｒ－Ｈ－１Ｋ」（ネオス社製）の１０倍希釈品
　クーラントＣ（水系）：商品名「ネオクール　Ｂｉｏ－６０Ｅ」（モレスコ社製）の１０倍希釈品 [Evaluation of coolant resistance]
About the sheet | seat (urethane sheet or rubber sheet) produced by the Example and the comparative example, durability with respect to a coolant was evaluated.
Here, the following three types of coolant were used, and the durability against these was evaluated.
Coolant A (oil-based): Trade name “Daphne Marg Plus MP10” (made by Idemitsu Kosan Co., Ltd.)
Coolant B (water-based): 10-fold diluted product of trade name “Clear Cut RH-1K” (manufactured by Neos) Coolant C (water-based): 10-fold diluted product name of “Neocool Bio-60E” (manufactured by Moresco) Goods
（評価方法）
　実施例及び比較例で作製したシートを上記クーラントＡ～Ｃのそれぞれに所定時間（０時間、７２時間、５２０時間）浸漬し、浸漬時におけるシートの重量増加率（％）を算出した。
　ここで、０時間の浸漬では、シートをクーラントに浸漬し、その直後にシートを引き上げた。また、クーラントＡ～Ｃは、それぞれ室温及び５０℃のクーラントと使用した。また、重量の測定は、クーラントからシートを引き上げて素早くクーラントを紙ウェスにて拭き取った後に行った。
　結果を表３、４及び図４（ａ）～図６（ｂ）に示した。 (Evaluation methods)
The sheets prepared in Examples and Comparative Examples were immersed in each of the coolants A to C for a predetermined time (0 hour, 72 hours, 520 hours), and the weight increase rate (%) of the sheet during the immersion was calculated.
Here, in the immersion for 0 hour, the sheet was immersed in a coolant, and immediately after that, the sheet was pulled up. Further, the coolants A to C were used as coolants at room temperature and 50 ° C., respectively. The weight was measured after the sheet was lifted from the coolant and quickly wiped off with a paper waste.
The results are shown in Tables 3 and 4 and FIGS. 4 (a) to 6 (b).
　図４（ａ）及び図４（ｂ）は、いずれも上記シートをクーラントＡ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。図４（ａ）には実施例１～７の評価結果を示した。図４（ｂ）には比較例１～９の評価結果を示した。
　図５（ａ）及び図５（ｂ）は、いずれも上記シートをクーラントＢ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。図５（ａ）には実施例１～７の評価結果を示した。図５（ｂ）には比較例１～９の評価結果を示した。
　図６（ａ）及び図６（ｂ）は、いずれも上記シートをクーラントＣ（５０℃）に浸漬した際の浸漬時間と重量増加率を示すグラフである。図６（ａ）には実施例１～７の評価結果を示した。図６（ｂ）には比較例１、２の評価結果を示した。 4 (a) and 4 (b) are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant A (50 ° C.). FIG. 4A shows the evaluation results of Examples 1 to 7. FIG. 4B shows the evaluation results of Comparative Examples 1 to 9.
FIG. 5A and FIG. 5B are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant B (50 ° C.). FIG. 5 (a) shows the evaluation results of Examples 1-7. FIG. 5B shows the evaluation results of Comparative Examples 1 to 9.
6 (a) and 6 (b) are graphs showing the immersion time and the weight increase rate when the sheet is immersed in the coolant C (50 ° C.). FIG. 6 (a) shows the evaluation results of Examples 1-7. FIG. 6B shows the evaluation results of Comparative Examples 1 and 2.
　次に、上記重量増加率に基づいて、実施例及び比較例で作製したシートを、下記の基準で「良好」、「膨潤」及び「溶出」に区分けした。結果を表３、４に示した。 Next, based on the weight increase rate, the sheets prepared in Examples and Comparative Examples were classified into “good”, “swelling”, and “elution” according to the following criteria. The results are shown in Tables 3 and 4.
　良好：重量増加率が－５～＋５％である。
　膨潤：重量増加率が５％より大きい。
　溶出：重量減少率が５％より大きい（重量増加率＜－５％）。 Good: Weight increase rate is -5 to + 5%.
Swelling: the weight increase rate is greater than 5%.
Elution: the weight loss rate is greater than 5% (weight increase rate <-5%).
　また、耐クーラント性の１つの指標として、「５２０ｈにおける重量増加率（％）／７２ｈにおける重量増加率（％）」を算出した。結果を表３、４に示した。この指標によっても上記シートの耐クーラントを評価することができる。この指標では、算出値が１．０に近いほど耐クーラント性が良好であることを意味する。 Also, as one index of coolant resistance, “weight increase rate at 520 h (%) / weight increase rate at 72 h (%)” was calculated. The results are shown in Tables 3 and 4. The coolant resistance of the sheet can also be evaluated by this index. In this index, the closer the calculated value is to 1.0, the better the coolant resistance.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
　表３、４及び図４（ａ）～図６（ｂ）に示したように、ポリオール成分がポリエチレンアジペートエステルポリオール（ＰＥＡ）であり、ＪＩＳ－Ａ硬さが６７°以上である実施例１～７のエラストマー部材は、不水溶性切削油及び水溶性切削油のいずれのクーラントに対しても耐クーラント性が良好であった。これに対して、比較例１～９のエラストマー部材（又はゴム部材）は、いずれかのクーラントにより、膨潤又は溶出が認められた。 As shown in Tables 3 and 4 and FIGS. 4 (a) to 6 (b), Examples 1 to 4 in which the polyol component is polyethylene adipate ester polyol (PEA) and the JIS-A hardness is 67 ° or more. The elastomer member No. 7 had good coolant resistance against both the water-insoluble cutting oil and the water-soluble cutting oil. In contrast, the elastomer members (or rubber members) of Comparative Examples 1 to 9 were swollen or eluted by any coolant.
［実機評価］
　実施例２のウレタンシート、及び、比較例１のゴムシートのそれぞれと同様の組成のエラストマー部材（ゴム部材）を弾性部材とする工作機械用シール部材を作製した。
　具体的には、実施例２のウレタンシートについては、まず、架橋後のシートを２０ｍｍ×６００ｍｍに裁断し、厚さ１．２ｍｍ、長さ９００ｍｍの金属製支持体と接着させた。その後、必要な長さ及び角度に端部をカットし、取付け用穴を開けて、シール部材とした。
　一方、比較例１のゴムシートについては、まず、１５０℃に加熱したリップシール形状の金型（約２ｍｍ厚さ×３２ｍｍ幅×１２００ｍｍ長さ）内に生ゴムシートと金属製支持体をセットし、３０分間加圧加温することによりプレス架橋させ、ゴムと支持体の一体成型物を得た。その後、必要な長さ及び角度に端部をカットし、取付け穴を開けてシール部材とした。 [Evaluation of actual machine]
A sealing member for a machine tool using an elastomer member (rubber member) having the same composition as that of each of the urethane sheet of Example 2 and the rubber sheet of Comparative Example 1 was produced.
Specifically, for the urethane sheet of Example 2, first, the crosslinked sheet was cut into 20 mm × 600 mm and adhered to a metal support having a thickness of 1.2 mm and a length of 900 mm. Then, the edge part was cut into required length and angle, the hole for attachment was opened, and it was set as the sealing member.
On the other hand, for the rubber sheet of Comparative Example 1, first, a raw rubber sheet and a metal support were set in a lip seal-shaped mold (about 2 mm thick × 32 mm wide × 1200 mm long) heated to 150 ° C., It was press-crosslinked by pressurizing and heating for 30 minutes to obtain an integrally molded product of rubber and support. Then, the edge part was cut to required length and angle, the attachment hole was opened, and it was set as the sealing member.
　得られた工作機械用シール部材をＣＮＣ旋盤（ＤＭＧ森精機社製　ＮＬＸ３０００）にリップシールとして取り付け（取り付け時の先端押し込み量：３ｍｍ）、８００時間稼働させた。稼働前後に工作機械用シール部材のエッジ部を観察した。結果を図７、８に示した。
　図７は、実施例２のウレタンシートを弾性部材として備えた工作機械用シール部材を使用した際のエッジ部の状態を撮影した写真（左側）及び模式図（右側）であり、上段が稼働前、下段が稼働後である。
　図８は、比較例１のゴムシートを弾性部材として備えた工作機械用シール部材を使用した際のエッジ部の状態を撮影した写真（左側）及び模式図（右側）であり、上段が稼働前、下段が稼働後である。 The obtained sealing member for machine tool was attached as a lip seal to a CNC lathe (NLX3000 manufactured by DMG Mori Seiki Co., Ltd.) (the tip pushing amount at the time of attachment: 3 mm) and operated for 800 hours. The edge part of the sealing member for machine tools was observed before and after operation. The results are shown in FIGS.
FIGS. 7A and 7B are a photograph (left side) and a schematic view (right side) of the state of the edge part when using a machine tool seal member provided with the urethane sheet of Example 2 as an elastic member. The lower part is after operation.
FIGS. 8A and 8B are a photograph (left side) and a schematic view (right side) of the state of the edge portion when using a machine tool seal member provided with the rubber sheet of Comparative Example 1 as an elastic member. The lower part is after operation.
　実施例２のウレタンシートと同様の組成のエラストマー部材を弾性部材とする工作機械用シール部材は、図８に示したように、わずかに摩耗しているだけであった。これに対して、比較例１のゴムシートと同様の組成のゴム部材を弾性部材とする工作機械用シール部材は、図９に示したように、大きく摩耗（約１ｍｍ）していた。これらのことから、ポリオール成分としてＰＥＡを用いたエラストマー部材（弾性部材）は、耐久性に優れることが明らかとなった。 The sealing member for a machine tool using an elastomer member having the same composition as that of the urethane sheet of Example 2 as an elastic member was only slightly worn as shown in FIG. On the other hand, as shown in FIG. 9, the seal member for a machine tool having a rubber member having the same composition as that of the rubber sheet of Comparative Example 1 was significantly worn (about 1 mm). From these things, it became clear that the elastomer member (elastic member) using PEA as a polyol component is excellent in durability.
　１０、２０　工作機械用シール部材
　１１、２１　支持部材
　１２、２２　弾性部材
　１２ａ、２２ａ　エッジ部
　１３　接着剤層
　１５　カバー部材
　２２Ａ　本体部
　２２Ｂ　リップ部
　１００　テレスコカバー DESCRIPTION OF SYMBOLS 10, 20 Machine tool seal member 11, 21 Support member 12, 22 Elastic member 12a, 22a Edge portion 13 Adhesive layer 15 Cover member 22A Main body portion 22B Lip portion 100 Telescopic cover

Claims (2)

  1. 　熱硬化性ポリウレタン組成物の硬化物からなり、
    　前記熱硬化性ポリウレタン組成物は、ポリオール成分、イソシアネート成分及び架橋剤を含有し、かつ、前記ポリオール成分がポリエチレンアジペートエステルポリオール（ＰＥＡ）であり、
    　ＪＩＳ－Ａ硬さが６７°以上であり、
    　工作機械に用いられること特徴とするエラストマー部材。     It consists of a cured product of a thermosetting polyurethane composition,
    The thermosetting polyurethane composition contains a polyol component, an isocyanate component, and a crosslinking agent, and the polyol component is a polyethylene adipate ester polyol (PEA),
    JIS-A hardness is 67 ° or more,
    An elastomer member used for a machine tool.
  2. 　支持部材と、前記支持部材に一体化された弾性部材とからなる工作機械用シール部材であって、
    　前記弾性部材が、請求項１に記載のエラストマー部材からなることを特徴とする工作機械用シール部材。     A seal member for a machine tool comprising a support member and an elastic member integrated with the support member,
    The said elastic member consists of the elastomer member of Claim 1, The sealing member for machine tools characterized by the above-mentioned.
PCT/JP2016/080840 2015-10-29 2016-10-18 Elastomer member and sealing member for machine tools WO2017073405A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016564279A JP6197128B1 (en) 2015-10-29 2016-10-18 Elastomer member and machine tool seal member
CN201680061044.2A CN108137770B (en) 2015-10-29 2016-10-18 Sealing member for machine tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-212672 2015-10-29
JP2015212672 2015-10-29

Publications (1)

Publication Number Publication Date
WO2017073405A1 true WO2017073405A1 (en) 2017-05-04

Family

ID=58630143

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/080840 WO2017073405A1 (en) 2015-10-29 2016-10-18 Elastomer member and sealing member for machine tools

Country Status (4)

Country Link
JP (1) JP6197128B1 (en)
CN (1) CN108137770B (en)
TW (1) TWI719071B (en)
WO (1) WO2017073405A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI763899B (en) * 2017-08-08 2022-05-11 日商阪東化學股份有限公司 Sealing parts for machine tools

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005225949A (en) * 2004-02-12 2005-08-25 Dainippon Ink & Chem Inc Thermosetting polyurethane elastomer composition and thermosetting polyurethane elastomer
WO2009123228A1 (en) * 2008-04-01 2009-10-08 三井化学株式会社 Crosslinked thermoplastic elastomer composition and manufacturing method for said composition
US20100130632A1 (en) * 2006-12-29 2010-05-27 Speas Eric Scott Rick Closed Cell Foams Comprising Urethane Elastomers
WO2015119030A1 (en) * 2014-02-06 2015-08-13 バンドー化学株式会社 Sealing member for machine tools

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4775751B2 (en) * 2001-07-31 2011-09-21 日本ポリウレタン工業株式会社 Thermoset urethane elastomer molding
JP5707522B1 (en) * 2014-04-16 2015-04-30 バンドー化学株式会社 Hulling roll
JP2017048319A (en) * 2015-09-02 2017-03-09 東ソー株式会社 Composition for forming polyurethane elastomer, and industrial mechanical component using the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005225949A (en) * 2004-02-12 2005-08-25 Dainippon Ink & Chem Inc Thermosetting polyurethane elastomer composition and thermosetting polyurethane elastomer
US20100130632A1 (en) * 2006-12-29 2010-05-27 Speas Eric Scott Rick Closed Cell Foams Comprising Urethane Elastomers
WO2009123228A1 (en) * 2008-04-01 2009-10-08 三井化学株式会社 Crosslinked thermoplastic elastomer composition and manufacturing method for said composition
WO2015119030A1 (en) * 2014-02-06 2015-08-13 バンドー化学株式会社 Sealing member for machine tools

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI763899B (en) * 2017-08-08 2022-05-11 日商阪東化學股份有限公司 Sealing parts for machine tools

Also Published As

Publication number Publication date
TWI719071B (en) 2021-02-21
CN108137770B (en) 2022-03-01
TW201734075A (en) 2017-10-01
CN108137770A (en) 2018-06-08
JP6197128B1 (en) 2017-09-13
JPWO2017073405A1 (en) 2017-10-26

Similar Documents

Publication Publication Date Title
JP6074572B1 (en) Cleaning blade
JP6197128B1 (en) Elastomer member and machine tool seal member
KR101841186B1 (en) Sealing member for machine tools
KR102156248B1 (en) Seal member for machine tool
JP7231658B2 (en) Urethane adhesive composition
TWI763899B (en) Sealing parts for machine tools
JP6822779B2 (en) Seal members for machine tools
JP2023013080A (en) Seal member for machine tools
JPS6150115B2 (en)
US10394180B2 (en) Cleaning blade
EP1079140B1 (en) Damper pulley
WO2017138218A1 (en) Sealing member for machine tools
JP2009160839A (en) Rubber-substrate composite
JP4494302B2 (en) Resin solution, paint, adhesive and printing ink
KR100600138B1 (en) The chloroprene rubber adhesive for vibration-proof rubber
JP2017008274A (en) Method for bonding sealing members for machine tool and seal for machine tool
JP2011039127A (en) Urethane blade member for electrophotographic image forming apparatus

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2016564279

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16859635

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16859635

Country of ref document: EP

Kind code of ref document: A1