WO2018003666A1 - 自動車のインストルメントパネル表皮材およびその製造方法 - Google Patents
自動車のインストルメントパネル表皮材およびその製造方法 Download PDFInfo
- Publication number
- WO2018003666A1 WO2018003666A1 PCT/JP2017/023096 JP2017023096W WO2018003666A1 WO 2018003666 A1 WO2018003666 A1 WO 2018003666A1 JP 2017023096 W JP2017023096 W JP 2017023096W WO 2018003666 A1 WO2018003666 A1 WO 2018003666A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyurethane
- instrument panel
- skin material
- mass
- panel skin
- Prior art date
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- 239000002245 particle Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- YXTFRJVQOWZDPP-UHFFFAOYSA-M sodium;3,5-dicarboxybenzenesulfonate Chemical compound [Na+].OC(=O)C1=CC(C(O)=O)=CC(S([O-])(=O)=O)=C1 YXTFRJVQOWZDPP-UHFFFAOYSA-M 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 150000003512 tertiary amines Chemical group 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K37/00—Dashboards
- B60K37/20—Dashboard panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/14—Linings or internal coatings
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1678—Resistive to light or to UV
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/18—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with two layers of different macromolecular materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/16—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
- D06P1/20—Anthraquinone dyes
Definitions
- the present invention relates to an instrument panel skin material for an automobile having an elegant appearance and a soft napped feel, and a method for manufacturing the same.
- An automotive interior material using ultrafine fibers and polymer elastic bodies is disclosed as an automotive interior material with improved light fastness by applying a blend of low molecular weight polyurethane and silicone resin as a binder to at least the surface of the ultrafine fiber napping sheet (See Patent Document 1).
- suede-like artificial leather containing a hindered amine light stabilizer is disclosed as a low fogging automotive interior material (see Patent Document 2). Further, the leather may be used as an instrument panel skin material.
- Patent Document 1 The automobile interior material described in Patent Document 1 has a problem that when it is used for an automobile interior skin material in a place that is exposed to direct sunlight like an instrument panel, it is discolored and faded by light and cannot be put into practical use.
- Patent Document 2 has a problem that fogging occurs when the content exceeds 5% by mass, and has light resistance as an instrument panel skin material at 5% by mass or less. There was a problem of not being.
- this skin has poor durability against sunlight, and there was no skin material with soft touch with napping.
- the present situation is that an instrument panel skin material of an automobile that has durability against direct sunlight, an elegant appearance, and a soft napped feel has not been obtained.
- An object of the present invention is to provide an automotive instrument panel skin material that is durable to direct sunlight, has an elegant appearance, and has a soft raised texture, and a method for manufacturing the same.
- the instrument panel in this invention is what exists in a front part among motor vehicle interior materials, and refers to the site
- an instrument peripheral part and the surrounding panel part are mentioned.
- An automotive instrument panel skin material of the present invention includes an ultrafine fiber having an average single fiber diameter of 0.3 to 7 ⁇ m and polyurethane, has napped fibers made of the ultrafine fiber, and has xenon according to JIS L0843: 2006 light fastness measuring method.
- the arc amount is 110 MJ / m 2
- fading due to gray scale evaluation is 3.5 or higher
- the heating temperature of the ISO 6452: 2007 glass haze evaluation method is 100 ° C. and the heating time is 20 hours.
- the glass haze measured under the conditions is 10.0% or less.
- the polyurethane is a polycarbonate-based polyurethane.
- the polyurethane contains a UV absorber having a vapor pressure of 5.0 ⁇ 10E-6 Pa or less at 20 ° C., and the UV absorber is The polyurethane content is 0.01 to 5% by mass.
- the UV absorber has a vapor pressure at 20 ° C. of 1.0 ⁇ 10E-7 Pa or less.
- the automotive instrument panel skin material of the present invention is characterized in that 0.01 to 5% by mass of silicone oil is contained in a mass comparison of the mass of the ultrafine fibers and the mass of the polyurethane. To do.
- a step of adding a UV absorber having a vapor pressure of 1.0 ⁇ 10E-7 Pa or less at 20 ° C. to polyurethane is added.
- An automotive instrument panel skin material with an elegant appearance and a soft raised texture can be obtained.
- An automotive instrument panel skin material of the present invention includes an ultrafine fiber having an average single fiber diameter of 0.3 to 7 ⁇ m and polyurethane, has napped fibers made of the ultrafine fiber, and has xenon according to JIS L0843: 2006 light fastness measuring method.
- the arc amount is 110 MJ / m 2
- fading due to gray scale evaluation is 3.5 or higher
- the heating temperature of the ISO 6452: 2007 glass haze evaluation method is 100 ° C. and the heating time is 20 hours.
- the glass haze measured under the conditions is 10.0% or less.
- ultrafine fibers used in the present invention include polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polylactic acid terephthalate and other polyesters such as 6-nylon and 66-nylon, polyacrylic, polyolefins such as polyethylene and polypropylene, and heat.
- Fibers made of a melt-spinnable thermoplastic resin such as plastic cellulose can be used.
- polyester fibers are preferably used from the viewpoint of strength, dimensional stability and light resistance.
- the fibrous base material can also be configured by mixing fibers of different materials.
- a round cross section may be used, but a fiber having an elliptical shape, a flat shape, a polygonal shape such as a triangle, or a deformed cross-sectional shape such as a sector shape or a cross shape may be employed.
- the average single fiber diameter of the fibers constituting the fibrous base material comprising the ultrafine fibers used in the present invention is 0.3 to 7 ⁇ m.
- an instrument panel skin material having excellent flexibility and napping quality can be obtained.
- the average single fiber diameter is set to 0.3 ⁇ m or more, more preferably 0.7 ⁇ m or more, and further preferably 1.0 ⁇ m or more, the bundle shape at the time of napping treatment such as coloring after dyeing or grinding with sandpaper is used.
- a skin material excellent in fiber dispersibility, soft texture and surface touch can be obtained.
- the average single fiber diameter of the fibers is larger than 7 ⁇ m, an excellent surface touch cannot be obtained, and the texture of the instrument panel skin material is cured.
- the average single fiber diameter of the fibers is smaller than 0.3 ⁇ m, the fibers are weak and napping is reduced, and a good surface quality cannot be obtained.
- the average single fiber diameter of the fibers constituting the fibrous base material can be determined as follows. That is, when the cross section of the fiber is a circle or an ellipse close to a circle, a scanning electron microscope (SEM) photograph of the surface of the skin material is taken at a magnification of 2000 times, 100 fibers are randomly selected, and the single fiber diameter is The average single fiber diameter is calculated to obtain the average single fiber diameter.
- SEM scanning electron microscope
- a nonwoven fabric or the like can be adopted as the form of the skin material made of ultrafine fibers used in the present invention.
- the nonwoven fabric is preferable because the surface quality of the skin material when the surface raising treatment is performed is good.
- nonwoven fabric either a short fiber nonwoven fabric or a long fiber nonwoven fabric is used, but a short fiber nonwoven fabric is preferably used in terms of texture and quality.
- the fiber length of the short fiber in the short fiber nonwoven fabric is preferably 25 to 90 mm.
- the fiber length is more preferably 35 mm or more, and particularly preferably 40 mm or more.
- the fiber length is more preferably 80 mm or less, and particularly preferably 70 mm or less.
- the nonwoven fabric preferably has a structure in which bundles of ultrafine fibers (ultrafine fiber bundles) are entangled.
- the strength of the instrument panel skin material is improved by the intertwining of the ultrafine fibers in a bundle state.
- the nonwoven fabric of such an embodiment can be obtained by entanglement of ultrafine fiber-expressing fibers in advance to form a fibrous base sheet, and then expressing the ultrafine fibers from the ultrafine fiber-expressing fibers.
- the ultrafine fiber or the ultrafine fiber bundle constitutes a nonwoven fabric
- a woven fabric or a knitted fabric can be inserted for the purpose of improving the strength and / or suppressing dimensional change during processing.
- the fabric structure include plain weave, twill weave and satin weave, and plain weave is preferably used in terms of cost.
- the knitted fabric include circular knitting, tricot, and russell.
- the average single fiber diameter of the fibers constituting such a woven or knitted fabric is preferably about 0.3 to 10 ⁇ m.
- the polyurethane resin used in the present invention may be polyurethane dissolved in a solvent or water-dispersed polyurethane.
- a solution type polyurethane resin (“Crisbon” (registered trademark) MP-812NB manufactured by DIC Corporation), an aqueous polyurethane resin (“Hydran” (registered trademark) WLI-602 manufactured by DIC Corporation), or the like can be used.
- a solution type polyurethane resin (“Crisbon” (registered trademark) MP-812NB manufactured by DIC Corporation)
- Hydran aqueous polyurethane resin
- WLI-602 aqueous polyurethane resin
- the ratio of polyurethane to the skin material mass is preferably 3% by mass or more and 80% by mass or less. More preferably, it is 15 mass% or more, More preferably, it is 55 mass% or less.
- the ratio of polyurethane is preferably 3% by mass or more and 80% by mass or less. More preferably, it is 15 mass% or more, More preferably, it is 55 mass% or less.
- polyurethane a polyurethane obtained by a reaction of a polymer diol, an organic diisocyanate, and a chain extender is preferable.
- polycarbonate-based, polyester-based, polyether-based, silicone-based, and fluorine-based diols can be adopted, and a copolymer combining these can also be used.
- polycarbonate-based and polyether-based diols are preferably used.
- polycarbonate-based and polyester-based diols are preferably used.
- a polycarbonate diol is preferably used.
- Polycarbonate-based diol can be produced by transesterification of alkylene glycol and carbonate, or reaction of phosgene or chloroformate with alkylene glycol.
- alkylene glycols examples include ethylene glycol, propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,9-nonanediol, and 1,10-decanediol.
- Chain alkylene glycols branched alkylene glycols such as neopentyl glycol, 3-methyl-1,5-pentanediol, 2,4-diethyl-1,5-pentanediol and 2-methyl-1,8-octanediol, Alicyclic diols such as 1,4-cyclohexanediol, aromatic diols such as bisphenol A, glycerin, trimethylolpropane, and pentaerythritol. Each may be a polycarbonate diol obtained from a single alkylene glycol, and any of copolymerized polycarbonate diols obtained from two or more types of alkylene glycols can be used.
- polyester diol examples include polyester diols obtained by condensing various low molecular weight polyols and polybasic acids.
- low molecular weight polyol examples include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 1,4-butanediol, and 2,2-dimethyl-1,3-propane.
- 1,4-cyclohexanedimethanol One or more selected from 1,4-cyclohexanedimethanol can be used. Further, addition products obtained by adding various alkylene oxides to bisphenol A can also be used.
- Polybasic acids include, for example, succinic acid, maleic acid, adipic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, phthalic acid, isophthalic acid, terephthalic acid, and hexahydro
- succinic acid maleic acid, adipic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, dodecanedicarboxylic acid, phthalic acid, isophthalic acid, terephthalic acid, and hexahydro
- isophthalic acid can be mentioned.
- polyether diols examples include polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and copolymer diols combining them.
- the number average molecular weight of the polymer diol is preferably 500 to 4000. By setting the number average molecular weight to 500 or more, more preferably 1500 or more, it is possible to prevent the texture from becoming hard. Moreover, the intensity
- organic diisocyanate examples include aliphatic diisocyanates such as hexamethylene diisocyanate, dicyclohexylmethane diisocyanate, isophorone diisocyanate, and xylylene diisocyanate, and aromatic diisocyanates such as diphenylmethane diisocyanate and tolylene diisocyanate. Can also be used in combination. Among these, aliphatic diisocyanates such as hexamethylene diisocyanate, dicyclohexylmethane diisocyanate and isophorone diisocyanate are preferably used from the viewpoint of light resistance.
- chain extender amine chain extenders such as ethylenediamine and methylenebisaniline, and diol chain extenders such as ethylene glycol can be used.
- the polyamine obtained by making polyisocyanate and water react can also be used as a chain extender.
- Polyurethane can be used in combination with a crosslinking agent for the purpose of improving water resistance, abrasion resistance, hydrolysis resistance and the like.
- the cross-linking agent may be an external cross-linking agent added as a third component to the polyurethane resin, or an internal cross-linking agent that introduces a reactive site that becomes a cross-linked structure in the polyurethane molecular structure in advance can be used. It is preferable to use an internal cross-linking agent from the viewpoint that the cross-linking points can be formed more uniformly in the polyurethane molecular structure and the reduction in flexibility can be reduced.
- crosslinking agent compounds having an isocyanate group, an oxazoline group, a carbodiimide group, an epoxy group, a melamine resin, a silanol group, and the like can be used.
- the crosslinking proceeds excessively, the polyurethane tends to harden and the texture of the instrument panel skin material also tends to be hard, so that a compound having a silanol group is preferably used in terms of the balance between reactivity and flexibility.
- the polyurethane used in the present invention can contain a hydrophilic group in the molecular structure.
- a hydrophilic group in the molecular structure By having a hydrophilic group in the molecular structure, the dispersibility and stability of the water-dispersible polyurethane resin can be improved.
- hydrophilic group examples include cationic systems such as quaternary amine salts, anionic systems such as sulfonates and carboxylates, nonionic systems such as polyethylene glycol, and combinations of cationic systems and nonionic systems, and anionic systems. Any hydrophilic group in a combination of nonionic and nonionic types can be employed. Of these, nonionic hydrophilic groups that are free from yellowing caused by light and harmful effects caused by a neutralizing agent are particularly preferably used.
- a neutralizing agent is required.
- the neutralizing agent is a tertiary amine such as ammonia, triethylamine, triethanolamine, triisopropanolamine, trimethylamine and dimethylethanolamine.
- amine is generated and volatilized by heat during film formation or drying, and this amine is released out of the system. For this reason, in order to suppress the release of air and the deterioration of the working environment, it is essential to introduce a device for recovering volatile amines.
- the amine remains in the instrument panel skin material that is the final product without being volatilized by heating, it may be discharged to the environment when the product is incinerated.
- a nonionic hydrophilic group since no neutralizer is used, it is not necessary to introduce an amine recovery device, and there is no fear of remaining amine in the instrument panel skin material.
- the neutralizing agent is an alkali metal such as sodium hydroxide, potassium hydroxide or calcium hydroxide, or a hydroxide of an alkaline earth metal
- the polyurethane portion becomes alkaline when wetted with water.
- a neutralizing agent since a neutralizing agent is not used, there is no need to worry about degradation due to hydrolysis of the polyurethane resin.
- Polyurethane resins include various additives, for example, pigments such as carbon black, flame retardants such as phosphorus, halogen, silicone and inorganic, antioxidants such as phenol, sulfur and phosphorus, benzotriazole UV absorbers such as benzophenone, salicylate, cyanoacrylate and oxalic acid anilides, light stabilizers such as hindered amines and benzoates, hydrolysis stabilizers such as polycarbodiimides, plasticizers, antistatic agents Agent, surfactant, softener, water repellent, coagulation regulator, dye, preservative, antibacterial agent, deodorant, filler such as cellulose particles, and inorganic particles such as silica and titanium oxide Can do.
- pigments such as carbon black
- flame retardants such as phosphorus, halogen, silicone and inorganic
- antioxidants such as phenol, sulfur and phosphorus
- benzotriazole UV absorbers such as benzophenone, salicylate, cyanoacrylate and o
- the instrument panel skin material of the present invention has a fading rate of 3.5 or higher in gray scale evaluation among the light fastness measured under the condition of xenon arc of 110 MJ / m 2 according to JIS L0843: 2006 light fastness measurement method. This is very important. If it is smaller than 3.5, discoloration and fading occur due to sunlight in actual use, and the problem arises that the color changes only in areas exposed to sunlight.
- the light fastness of the instrument panel skin is preferably 4.0 or higher, more preferably 4.5 or higher.
- the instrument panel skin material of the present invention has a glass haze of 10.0% or less measured under the conditions of ISO 6452: 2007 glass haze evaluation method at a heating temperature of 100 ° C. and a heating time of 20 hours. . If the glass haze is greater than 10.0%, the windshield will be fogged in actual use, which is dangerous because the front visibility cannot be secured during driving.
- the glass haze is preferably 6.5% or less, more preferably 5% or less.
- the polyurethane contained in the instrument panel skin material preferably contains a UV absorber having a vapor pressure at 20 ° C. of 5.0 ⁇ 10E-6 Pa or less.
- a UV absorber having a vapor pressure at 20 ° C. of 5.0 ⁇ 10E-6 Pa or less.
- the UV absorber preferably has a vapor pressure at 20 ° C. of 5.0 ⁇ 10E-6 Pa or less.
- the UV absorber volatilizes when the instrument panel skin is exposed to sunlight, and the polyurethane does not contain the UV absorber. Deterioration may occur and may not withstand long-term use.
- the UV absorber preferably has a vapor pressure at 20 ° C. of 1.0 ⁇ 10E-6 Pa or less, more preferably 5.0 ⁇ 10E-7 Pa or less.
- the addition amount of the UV absorber is preferably such that the mass of the UV absorber is 0.01% by mass to 5% by mass relative to the mass of polyurethane. If it is less than 0.01% by mass, sufficient ultraviolet absorption effect cannot be obtained, and polyurethane may be deteriorated. If it is larger than 5% by mass, the flexible texture of polyurethane is impaired, and the touch on the surface of the instrument panel skin may be deteriorated, and the possibility of occurrence of glass fogging may be increased.
- the addition amount of the UV absorber is preferably 0.05% by mass or more, and more preferably 0.10% by mass or more. Moreover, the addition amount of UV absorber becomes like this. Preferably it is 4.5 mass% or less, More preferably, it is 4.0 mass% or less.
- the instrument panel skin material of the present invention preferably includes a silicone oil in a content of 0.01% by mass or more and 5% by mass or less in terms of a total mass of ultrafine fibers and polyurethane.
- a silicone oil in a content of 0.01% by mass or more and 5% by mass or less in terms of a total mass of ultrafine fibers and polyurethane.
- the silicone oil content is preferably 0.05% by mass or more, and more preferably 0.10% by mass or more.
- the silicone oil content is preferably 4.5 mass% or less, more preferably 4.0 mass% or less.
- the production method of the present invention includes ultrafine fibers having an average single fiber diameter of 0.3 to 7 ⁇ m and polyurethane, and has napped fibers made of the ultrafine fibers, and the vapor pressure at 20 ° C. of the polyurethane is 1.0 ⁇ 10E.
- 0.01 to 5% by mass of silicone oil is applied in a mass ratio of the total mass of ultrafine fibers and polyurethane.
- the skin material of the present invention imparts polyurethane to a fibrous base material containing ultrafine fibers.
- a means for forming the ultrafine fiber of the fibrous base material it is preferable to use an ultrafine fiber expression type fiber.
- the ultrafine fiber expression type fiber By using the ultrafine fiber expression type fiber, a form in which the ultrafine fiber bundles are entangled can be stably obtained.
- ultrafine fiber expression type fiber two-component thermoplastic resins with different solvent solubility are used as sea component and island component, and the sea component is dissolved and removed using solvent etc. to make island component as ultrafine fiber.
- a two-component thermoplastic resin may be alternately disposed in a radial or multilayer manner on the fiber cross section, and a peelable composite fiber that is split into ultrafine fibers by separating and separating each component may be employed.
- the sea-island type fiber is preferable also from the viewpoint of the flexibility and texture of the instrument panel skin material because it can provide an appropriate gap between the island components, that is, between the ultrafine fibers, by removing the sea component. Used.
- sea-island type fiber a sea-island type compound base is used, and the sea-island type composite fiber that spins the sea component and the island component by mutual arrangement and the sea component and the island component are mixed and spun.
- Sea-island type composite fibers are preferably used from the viewpoint that ultrafine fibers having a uniform fineness are obtained, and that a sufficiently long ultrafine fiber is obtained and contributes to the strength of the instrument panel skin material.
- polyethylene, polypropylene, polystyrene, copolymer polyester obtained by copolymerizing sodium sulfoisophthalic acid, polyethylene glycol, or the like, polylactic acid, or the like can be used.
- a copolymerized polyester or polylactic acid obtained by copolymerizing alkali-decomposable sodium sulfoisophthalic acid or polyethylene glycol that can be decomposed without using an organic solvent is preferable.
- sea removal treatment it is preferable to perform the sea removal treatment when the sea-island type fibers are used before applying polyurethane to the fibrous base material.
- polyurethane may be present between the ultrafine fibers and the ultrafine fibers may not be uniformly dispersed.
- the sea removal treatment is performed before the polyurethane is applied, the fibers are uniformly dispersed to obtain a good surface quality, and surface unevenness is easily eliminated.
- the polyurethane since the polyurethane is in close contact with the ultrafine fibers and the ultrafine fibers can be strongly gripped, the wear resistance of the instrument panel skin material becomes better.
- the sea removal treatment involves immersing the sea-island fiber in a solvent and constricting it, or applying a heat treatment after applying a solvent necessary for sea removal to the fibrous base material, and removing sea components by washing, etc. It can be carried out.
- a solvent for dissolving the sea component an organic solvent such as toluene or trichloroethylene is used when the sea component is polyethylene, polypropylene or polystyrene, and an alkali such as sodium hydroxide is used when the sea component is a copolyester or polylactic acid.
- An aqueous solution can be used. From the viewpoint of environmental consideration of the process, sea removal treatment with an aqueous alkali solution such as sodium hydroxide is preferable.
- a water-soluble resin such as polyvinyl alcohol can be applied to the fibrous base material as a temporary reinforcing material.
- the reinforcing material is not particularly limited as long as it can temporarily maintain the sheet shape, but is preferably one that can be extracted and removed after polyurethane is applied. It is also possible to impart a water-soluble resin to the fibrous base material after the expression of ultrafine fibers. When the water-soluble resin is applied after the development of ultrafine fibers, an effect of softening the texture may be obtained.
- a method for applying polyurethane to the fibrous base material a method of impregnating the fibrous base material with a polyurethane solution is preferable. By impregnating, polyurethane can be applied to every corner of the fibrous base material, so that the surface quality of the skin material becomes more uniform.
- wet coagulation method in which polyretane is coagulated by dipping in an aqueous solution or organic solvent aqueous solution
- dry coagulation method in which polyurethane solution is impregnated and dried and coagulated
- wet A method of heat-sensitive coagulation of polyretane by heat treatment and the like can be mentioned.
- N, N-dimethylformamide, dimethyl sulfoxide, methyl ethyl ketone, water and the like can be used.
- UV absorber having a vapor pressure of 1.0 ⁇ 10E-7 Pa or less at 20 ° C.
- the UV absorber is preferably dissolved or dispersed in a polyurethane solution and is present inside the polyurethane coagulum when the polyurethane is coagulated.
- a UV absorber When a UV absorber is applied after polyurethane coagulation, it adheres to the surface of the polyurethane coagulum, and only a short-term UV absorption effect can be obtained, and sufficient light resistance cannot be obtained in the long term.
- silicone oil to the sheet after impregnating and solidifying the fibrous base material with polyurethane.
- the method for applying the silicone oil includes a method of impregnating the sheet with the silicone oil liquid, a method of applying by spraying, and a method of impregnating or immersing the sheet in a liquid containing the silicone oil after brushing or dyeing described later.
- a method of applying the sheet by impregnating a sheet with a silicone oil solution is preferable.
- Silicone oil is preferably applied immediately after the polyurethane is solidified.
- the polyurethane coagulated product is heated after coagulation of the polyurethane, bleeding of the UV absorber occurs from the inside of the polyurethane coagulated product, the surface covering effect by the silicone oil is lowered, and good light resistance is hardly obtained.
- silicone oil when polyurethane is coagulated in water, it is preferable to apply silicone oil before heating to dry the moisture.
- ⁇ Raising treatment is performed to form napping on the surface of the instrument panel skin.
- the raising treatment can be performed by a grinding method using sandpaper or a roll sander.
- the napped state may change due to the sliding effect of the silicone oil. It is preferable to adjust the sliding effect of the silicone oil to be applied. The sliding effect can be appropriately adjusted depending on the type and amount of silicone oil.
- the instrument panel skin can be dyed.
- the dyeing method it is preferable to use a liquid dyeing machine because the instrument panel skin material can be softened by simultaneously dyeing the instrument panel skin material and giving a stagnation effect.
- the dyeing temperature is preferably in the range of 80 to 150 ° C., although it depends on the type of fiber. By setting the dyeing temperature to 80 ° C. or higher, more preferably 100 ° C. or higher, it is possible to efficiently dye the fibers. On the other hand, the deterioration of the polyurethane can be prevented by setting the dyeing temperature to 150 ° C. or lower, more preferably 130 ° C. or lower.
- the dye used in the present invention can be selected according to the type of fiber constituting the fibrous base material.
- disperse dyes can be used for polyester fibers
- acid dyes and metal-containing dyes can be used for polyamide fibers, and combinations thereof can also be used.
- reduction washing may be performed after dyeing.
- a dyeing assistant during dyeing.
- a dyeing assistant By using a dyeing assistant, the uniformity and reproducibility of dyeing can be improved.
- a finishing treatment using a softening agent, an antistatic agent, a water repellent, a flame retardant, a light-resistant agent, an antibacterial agent, or the like can be performed in the same bath or after dyeing.
- silicone oil can be applied at this time.
- Average single fiber diameter The average single fiber diameter was obtained by taking a scanning electron microscope (SEM) photograph of the surface of the fibrous base material or instrument panel skin material at a magnification of 2000 times, selecting 100 ultrafine fibers at random, and measuring the single fiber diameter. The average value was calculated.
- the outer peripheral circular diameter of the irregular cross section is calculated as a single fiber diameter. Also, when the circular cross section and the irregular cross section are mixed, or when the single fiber diameters are greatly different, etc., the number of samplings corresponding to each existing number ratio is selected and calculated to be a total of 100. To do. However, when a reinforcing woven fabric or knitted fabric is inserted in addition to the non-woven fabric composed of the ultra fine fibers or the ultra fine fiber bundle, the fibers of the reinforcing woven fabric or knitted fabric have an average single fiber diameter of the ultra fine fibers. Are excluded from sampling targets.
- Appearance quality of instrument panel skin The appearance quality of the instrument panel skin was the highest, with 10 males and 10 females each in good health, with a total of 20 evaluators. Evaluation was defined as appearance quality. Appearance quality was good from grade 3 to grade 5. Grade 5: There is uniform fiber napping and the appearance is good. Grade 4: Evaluation between grade 5 and grade 3. Third grade: Napped hairs vary slightly, but the appearance is reasonably good. Second grade: An evaluation between the third grade and the first grade. First grade: Napped hairs are generally uneven and the appearance is poor.
- Example 1 (Nonwoven fabric for fibrous base materials) Polyethylene terephthalate copolymerized with 8 mol% sodium 5-sulfoisophthalate was used as the sea component, and polyethylene terephthalate was used as the island component. The sea component was 45% by mass and the island component was 55% by mass. A sea-island type composite fiber having 36 islands / 1 filament and an average single fiber diameter of 17 ⁇ m was obtained. The obtained sea-island type composite fiber was cut into a fiber length of 51 mm to form a staple, a fiber web was formed through a card and a cross wrapper, and a nonwoven fabric was formed by needle punching. The nonwoven fabric obtained in this manner was immersed in hot water at a temperature of 98 ° C. for 2 minutes to shrink and dried at a temperature of 100 ° C. for 5 minutes to obtain a nonwoven fabric (sheet) for a fibrous base material.
- the nonwoven fabric (sheet) for fibrous base material was impregnated with a polyvinyl alcohol aqueous solution having a concentration of 12% by mass adjusted to a temperature of 50 ° C., and dried with a dryer at a temperature of 120 ° C.
- the nonwoven fabric for fiber base material (sheet) to which polyvinyl alcohol is added is immersed in a 10 g / L sodium hydroxide aqueous solution heated to a temperature of 95 ° C. and treated for 30 minutes to remove sea components of the sea-island composite fibers.
- a seawater-removal sheet (fibrous substrate) containing the obtained ultrafine fibers was obtained.
- a silicone oil emulsion liquid adjusted to a concentration of 1% by mass is impregnated, and the silicone oil application amount is 0.1% with respect to the total mass of fiber mass and polyurethane mass. It provided so that it might become mass%.
- the sheet-like material which gave the polyurethane resin so that the mass of the polyurethane resin might be 30 mass% with respect to the polyester component mass of a nonwoven fabric by drying with hot air for 10 minutes at the temperature of 110 degreeC was obtained.
- the sheet-like material provided with polyurethane resin on the fibrous base material is cut in half in the thickness direction, and the surface opposite to the half-cut surface is subjected to raising treatment by grinding using a 240 mesh endless sandpaper, and then circular dyeing
- the instrument panel skin material was obtained by dyeing with disperse dye using a machine and performing reduction cleaning.
- the single fiber diameter of the ultrafine fibers contained in the obtained instrument panel skin material was 3.0 ⁇ m.
- the light fastness to light of the obtained instrument panel skin material was 4.0 grade, and the glass haze was 9.5%. Moreover, the surface touch of the obtained skin material was grade 4, and the appearance quality was good, grade 4.
- Example 2 (Applying polymer elastic body) An instrument panel skin material was obtained in the same manner as in Example 1 except that the addition amount of the UV absorber was 0.01% by mass.
- the resulting instrument panel skin material had a light fastness of 3.5 grade and a glass haze of 9.3%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 3 (Applying polymer elastic body) An instrument panel skin material was obtained in the same manner as in Example 1 except that the addition amount of the UV absorber was 5.0% by mass.
- the resulting instrument panel skin material had a light fastness of 4.5 grade and a glass haze of 9.2%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 4 (Applying polymer elastic body) Instrument panel skin as in Example 1, except that the UV absorber to be added was a UV absorber (manufactured by Tokyo Chemical Industry Co., Ltd.) having a vapor pressure of 7.5 ⁇ 10E-7 Pa at 20 ° C. I got the material.
- a UV absorber manufactured by Tokyo Chemical Industry Co., Ltd.
- the light fastness to light of the obtained instrument panel skin material was 4.0 grade, and the glass haze was 6.9%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 5 (Applying polymer elastic body) Instrument panel skin as in Example 1, except that the UV absorber to be added was a UV absorber (manufactured by Tokyo Chemical Industry Co., Ltd.) having a vapor pressure of 2.0 ⁇ 10E-10 Pa at 20 ° C. I got the material.
- a UV absorber manufactured by Tokyo Chemical Industry Co., Ltd.
- the obtained instrument panel skin material had a light fastness of 4.0 grade and a glass haze of 4.7%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 6 (Applying polymer elastic body) Instrument panel skin as in Example 1 except that the UV absorber to be added was a UV absorber (Tokyo Chemical Industry Co., Ltd.) having a vapor pressure of 6.0 ⁇ 10E-13 Pa at 20 ° C. I got the material.
- a UV absorber Tokyo Chemical Industry Co., Ltd.
- the resulting instrument panel skin material had a light fastness of 4.5 grade and a glass haze of 3.5%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 7 An instrument panel skin material was obtained in the same manner as in Example 1 except that the island component in one filament of the sea-island fiber obtained in the same manner as in Example 1 was 100 islands.
- the single fiber diameter of the ultrafine fibers contained in the obtained instrument panel skin material was 0.3 ⁇ m.
- the resulting instrument panel skin material had a light fastness of 3.5 grade and a glass haze of 8.9%. Moreover, the surface touch of the obtained skin material was grade 5, and the appearance quality was good, grade 3.
- Example 8 An instrument panel skin material was obtained in the same manner as in Example 1 except that the island component in one filament of the sea-island fiber obtained in the same manner as in Example 1 was 8. The single fiber diameter of the ultrafine fibers contained in the obtained instrument panel skin material was 7.0 ⁇ m.
- the light fastness to light of the obtained instrument panel skin material was 5.0 grade, and the glass haze was 9.1%. Moreover, the surface touch of the obtained instrument panel skin material was grade 3, and the appearance quality was good, grade 3.
- Example 9 (Applying polymer elastic body) The polyurethane was coagulated in the same manner as in Example 1. Thereafter, after removing polyvinyl alcohol and DMF in water at 70 ° C., a silicone oil emulsion adjusted to a concentration of 2% by mass was impregnated, and the silicone oil application amount was 5.0 with respect to the total mass of the fiber mass and the polyurethane mass. An instrument panel skin material was obtained in the same manner as in Example 1 except that it was added so as to be in mass%.
- the resulting instrument panel skin material had a light fastness of 4.0 grade and a glass haze of 9.2%. Moreover, the surface touch of the obtained instrument panel skin material was grade 3, and the appearance quality was good, grade 4.
- Example 10 (Applying polymer elastic body) The polyurethane was coagulated in the same manner as in Example 1. Then, after removing polyvinyl alcohol and DMF in water at 70 ° C., a silicone oil emulsion liquid adjusted to a concentration of 0.05% by mass was impregnated, and the amount of silicone oil applied was 0 with respect to the total mass of fiber mass and polyurethane mass. An instrument panel skin material was obtained in the same manner as in Example 1 except that the content was 0.01% by mass.
- the obtained instrument panel skin material had a light fastness of 3.5 grade and a glass haze of 9.9%. Further, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was good, grade 4.
- Example 11 (Applying polymer elastic body) The polyurethane was coagulated in the same manner as in Example 1. Thereafter, after removing polyvinyl alcohol and DMF in water at 70 ° C., no silicone oil was applied.
- the obtained instrument panel skin material had a light fastness of 3.5 grade and a glass haze of 9.5%. Moreover, the surface touch of the obtained instrument panel skin material was grade 3, and the appearance quality was good, grade 4.
- Example 1 (Applying polymer elastic body) Instrument panel skin as in Example 1 except that the UV absorber to be added is a UV absorber (manufactured by Tokyo Chemical Industry Co., Ltd.) having a vapor pressure of 1.5 ⁇ 10E-4 Pa at 20 ° C. I got the material.
- a UV absorber manufactured by Tokyo Chemical Industry Co., Ltd.
- the resulting skin material had a light fastness of 3.0 and a glass haze of 12.0%, which was not applicable as an instrument panel. Moreover, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was grade 4.
- Example 2 Nonwoven fabric for fiber base material, sea removal treatment
- the polyurethane was coagulated in the same manner as in Example 1 except that the UV absorber to be added was a UV absorber having a vapor pressure of 1.5 ⁇ 10E-4 Pa at 20 ° C. (manufactured by Tokyo Chemical Industry Co., Ltd.). . Thereafter, after removing polyvinyl alcohol and DMF in water at 70 ° C., an instrument panel skin material was obtained in the same manner as in Example 1 except that silicone oil was not applied.
- the resulting skin material had a light fastness of 3.0 and a glass haze of 18.0%, which was not applicable as an instrument panel. Moreover, the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was grade 4.
- the light fastness to light of the obtained instrument panel skin was 3.0, which was not applicable as an instrument panel.
- the glass haze was 8.8%.
- the surface touch of the obtained instrument panel skin material was grade 4, and the appearance quality was grade 2.
- Table 1 summarizes the evaluation results of the instrument panel skin materials obtained in the above examples and comparative examples.
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- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
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Abstract
Description
(1)平均単繊維直径:
平均単繊維直径は、繊維質基材またはインストルメントパネル表皮材の表面の走査型電子顕微鏡(SEM)写真を倍率2000倍で撮影し、極細繊維をランダムに100本選び、単繊維直径を測定して平均値を計算することにより算出した。
JIS L0843:2006耐光堅牢度測定法(B法、第5露光法)に則り、キセノンアーク照射量が110MJ/m2になるように測定時間を調整した条件で照射を行った。キセノンアーク照射前、照射後の表皮材を比較し、グレースケール評価による変色退色を評価した。評価は1級から5級までを0.5級単位で行った。
ISO 6452:2007ガラス曇り評価方法に則り、加熱温度100℃、加熱時間20時間の条件で加熱を行った。ガラス曇り度は濁度計NDH2000(日本電色工業製)計を用いて、遮蔽率を評価した。
表皮材の表面タッチは、健康状態の良好な成人男性と成人女性各10名ずつ、計20名を評価者として、表皮材の表面を手で撫でて離すことを3回繰り返し、官能評価によって表面タッチを下記のように5段階評価し、最も多かった評価を表面タッチとした。表面タッチは、3級~5級を適正な風合いとした。
5級:表皮材は非常に滑らかである。
4級:5級と3級の間の評価である。
3級:表皮材は指先への引っかかりがあるものの、滑らかである。
2級:3級と1級の間の評価である。
1級:表皮材はざらついている。
インストルメントパネル表皮材の外観品位は、健康状態の良好な成人男性と成人女性各10名ずつ、計20名を評価者として、目視と官能評価によって下記のように5段階評価し、最も多かった評価を外観品位とした。外観品位は、3級~5級を良好とした。
5級:均一な繊維の立毛があり、外観は良好である。
4級:5級と3級の間の評価である。
3級:立毛にややバラツキがあるが、外観はまずまず良好である。
2級:3級と1級の間の評価である。
1級:全体的に立毛が不均一で、外観は不良である。
(繊維質基材用の不織布)
海成分として、5-スルホイソフタル酸ナトリウムを8mol%共重合したポリエチレンテレフタレートを用い、島成分として、ポリエチレンテレフタレートを用い、海成分が45質量%、島成分が55質量%の複合比率で、島数36島/1フィラメント、平均単繊維直径17μmの海島型複合繊維を得た。得られた海島型複合繊維を繊維長51mmにカットしてステープルとし、カードおよびクロスラッパーを通して繊維ウェブを形成し、ニードルパンチ処理により、不織布とした。このようにして得られた不織布を、98℃の温度の湯中に2分間浸漬させて収縮させ、100℃の温度で5分間乾燥させ、繊維質基材用不織布(シート)とした。
繊維質基材用不織布(シート)に50℃の温度に調整した濃度12質量%ポリビニルアルコール水溶液を含浸し、120℃の温度の乾燥機で乾燥を行った。
ポリビニルアルコールを付与した繊維質基材用不織布(シート)を95℃の温度に加熱した濃度10g/Lの水酸化ナトリウム水溶液に浸漬して30分間処理を行い、海島型複合繊維の海成分を除去した極細繊維を含む脱海シート(繊維質基材)を得た。
固形分濃度12質量%に調整したポリカーボネート系ポリウレタン樹脂のDMF(N,N-ジメチルホルムアミド)溶液に、摂氏20℃での蒸気圧が4.7×10E-6PaであるUV吸収剤(東京化成工業株式会社製)をポリウレタン樹脂の固形分に対して3質量%になるように添加し、よく攪拌した後に、脱海シート(繊維質基材)に含浸し、DMF濃度30質量%の水溶液中でポリウレタンを凝固させた。その後、ポリビニルアルコールおよびDMFを70℃の水中で除去した後に、濃度1質量%に調整したシリコーンオイルエマルジョン液を含浸し、繊維質量とポリウレタン質量の合計質量に対し、シリコーンオイル付与量が0.1質量%になるように付与した。
上記の繊維質基材にポリウレタン樹脂を付与したシート状物を厚さ方向に半裁し、半裁面と反対の表面を240メッシュのエンドレスサンドペーパーを用いた研削によって起毛処理を施した後、サーキュラー染色機を用いて分散染料により染色し還元洗浄を行い、インストルメントパネル表皮材を得た。得られたインストルメントパネル表皮材に含まれる極細繊維の単繊維直径は3.0μmであった。
得られたインストルメントパネル表皮材の耐光堅牢度は4.0級であり、ガラス曇り度は9.5%であった。また、得られた表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
UV吸収剤の添加量を0.01質量%にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は3.5級であり、ガラス曇り度は9.3%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
UV吸収剤の添加量を5.0質量%にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は4.5級であり、ガラス曇り度は9.2%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
添加するUV吸収剤を摂氏20℃での蒸気圧が7.5×10E-7PaであるUV吸収剤(東京化成工業株式会社製)にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は4.0級であり、ガラス曇り度は6.9%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
添加するUV吸収剤を摂氏20℃での蒸気圧が2.0×10E-10PaであるUV吸収剤(東京化成工業株式会社製)にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は4.0級であり、ガラス曇り度は4.7%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
添加するUV吸収剤を摂氏20℃での蒸気圧が6.0×10E-13PaであるUV吸収剤(東京化成工業株式会社製)にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は4.5級であり、ガラス曇り度は3.5%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
実施例1と同様にして得られた海島型繊維の1フィラメント中の島成分が100島であったこと以外は、実施例1と同様の方法でインストルメントパネル表皮材を得た。得られたインストルメントパネル表皮材に含まれる極細繊維の単繊維直径は0.3μmであった。
得られたインストルメントパネル表皮材の耐光堅牢度は3.5級であり、ガラス曇り度は8.9%であった。また、得られた表皮材の表面タッチは5級であり、外観品位は3級と良好であった。
実施例1と同様にして得られた海島型繊維の1フィラメント中の島成分が8島であったこと以外は、実施例1と同じ方法でインストルメントパネル表皮材を得た。得られたインストルメントパネル表皮材に含まれる極細繊維の単繊維直径は7.0μmであった。
得られたインストルメントパネル表皮材の耐光堅牢度は5.0級であり、ガラス曇り度は9.1%であった。また、得られたインストルメントパネル表皮材の表面タッチは3級であり、外観品位は3級と良好であった。
(高分子弾性体の付与)
実施例1と同様にポリウレタンを凝固させた。その後、ポリビニルアルコールおよびDMFを70℃の水中で除去した後に、濃度2質量%に調整したシリコーンオイルエマルジョン液を含浸し、繊維質量とポリウレタン質量の合計質量に対し、シリコーンオイル付与量が5.0質量%になるように付与した以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は4.0級であり、ガラス曇り度は9.2%であった。また、得られたインストルメントパネル表皮材の表面タッチは3級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
実施例1と同様にポリウレタンを凝固させた。その後、ポリビニルアルコールおよびDMFを70℃の水中で除去した後に、濃度0.05質量%に調整したシリコーンオイルエマルジョン液を含浸し、繊維質量とポリウレタン質量の合計質量に対し、シリコーンオイル付与量が0.01質量%になるように付与した以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は3.5級であり、ガラス曇り度は9.9%であった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
実施例1と同様にポリウレタンを凝固させた。その後、ポリビニルアルコールおよびDMFを70℃の水中で除去後に、シリコーンオイルを付与しなかった。
シート状物を厚さ方向に半裁し、起毛処理を施した後、サーキュラー染色機を用いて分散染料により染色し還元洗浄を行い、仕上げ剤処理としてシリコーンオイルエマルジョン液を繊維質量とポリウレタン質量の合計質量に対し、シリコーンオイル付与量が0.1質量%になるように付与した以外は実施例1と同様にしてインストルメントパネル表皮材を得た。
得られたインストルメントパネル表皮材の耐光堅牢度は3.5級であり、ガラス曇り度は9.5%であった。また、得られたインストルメントパネル表皮材の表面タッチは3級であり、外観品位は4級と良好であった。
(高分子弾性体の付与)
添加するUV吸収剤を摂氏20℃での蒸気圧が1.5×10E-4PaであるUV吸収剤(東京化成工業株式会社製)にした以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られた表皮材の耐光堅牢度は3.0級であり、ガラス曇り度は12.0%であり、インストルメントパネルとして適用できないものであった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級であった。
(繊維質基材用の不織布、脱海処理)
(高分子弾性体の付与)
添加するUV吸収剤を摂氏20℃での蒸気圧が1.5×10E-4PaであるUV吸収剤(東京化成工業株式会社製)にした以外は、実施例1と同様にポリウレタンを凝固させた。その後、ポリビニルアルコールおよびDMFを70℃の水中で除去した後に、シリコーンオイルを付与しなかった以外は実施例1と同様にして、インストルメントパネル表皮材を得た。
得られた表皮材の耐光堅牢度は3.0級であり、ガラス曇り度は18.0%であり、インストルメントパネルとして適用できないものであった。また、得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は4級であった。
実施例1と同様にして得られた海島型繊維の1フィラメント中の島成分が6島であったこと以外は、実施例1と同じ方法でインストルメントパネル表皮材を得た。得られたインストルメントパネル表皮材に含まれる極細繊維の単繊維直径は7.2μmであった。
得られたインストルメントパネル表皮材の耐光堅牢度は5.0級であり、ガラス曇り度は9.6%であったが、得られたインストルメントパネル表皮材の表面タッチは2級であり、外観品位は2級と良好な表面状態は得られなかった。
実施例1と同様にして得られた海島型繊維の1フィラメント中の島成分が150島であったこと以外は、実施例1と同じ方法でインストルメントパネル表皮材を得た。得られたインストルメントパネル表皮材に含まれる極細繊維の単繊維直径は0.2μmであった。
得られたインストルメントパネル表皮材の耐光堅牢度は3.0級であり、インストルメントパネルとして適用できないものであった。ガラス曇り度は8.8%であった。得られたインストルメントパネル表皮材の表面タッチは4級であり、外観品位は2級であった。
Claims (6)
- 平均単繊維直径0.3~7μmの極細繊維とポリウレタンを含み、前記極細繊維からなる立毛を有し、JIS L0843:2006耐光堅牢度測定法のキセノンアーク量が110MJ/m2条件で測定した耐光堅牢度のうち、グレースケール評価による退色が3.5級以上であり、ISO 6452:2007ガラス曇り評価方法の加熱温度100℃、加熱時間20時間の条件で測定したガラス曇り度が10.0%以下であることを特徴とする自動車のインストルメントパネル表皮材。
- 前記ポリウレタンはポリカーボネート系ポリウレタンであることを特徴とする、請求項1に記載の自動車のインストルメントパネル表皮材。
- 前記ポリウレタンが摂氏20℃での蒸気圧が5.0×10E-6Pa以下のUV吸収剤を含み、前記UV吸収剤はポリウレタン質量対比の含有量が0.01~5質量%であることを特徴とする、請求項1または2に記載の自動車のインストルメントパネル表皮材。
- 前記UV吸収剤が摂氏20℃での蒸気圧が1.0×10E-7Pa以下であることを特徴とする、請求項3に記載の自動車のインストルメントパネル表皮材。
- 前記極細繊維の質量と前記ポリウレタンの質量を合計した質量対比で、シリコーンオイル0.01~5質量%含むことを特徴とする、請求項1~4のいずれかに記載の自動車のインストルメントパネル表皮材。
- 請求項1~5に記載の自動車のインストルメントパネル表皮材の製造方法であって、ポリウレタンに摂氏20℃での蒸気圧が1.0×10E-7Pa以下のUV吸収剤を添加する工程、UV吸収剤を添加したポリウレタンを極細繊維を含む繊維質基材に含浸付与するポリウレタン含浸付与工程を有し、前記UV吸収剤はポリウレタン質量対比の含有量が0.01~5質量%であり、ポリウレタン含浸付与工程後に、シリコーンオイルを極細繊維質量とポリウレタン質量を合計した質量対比で0.01~5質量%ポリウレタン含浸付与した繊維質基材に付与する工程を含むことを特徴とする、自動車のインストルメントパネル表皮材の製造方法。
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