WO2014111978A1 - 塗装金属素形材、複合体、およびそれらの製造方法 - Google Patents
塗装金属素形材、複合体、およびそれらの製造方法 Download PDFInfo
- Publication number
- WO2014111978A1 WO2014111978A1 PCT/JP2013/002875 JP2013002875W WO2014111978A1 WO 2014111978 A1 WO2014111978 A1 WO 2014111978A1 JP 2013002875 W JP2013002875 W JP 2013002875W WO 2014111978 A1 WO2014111978 A1 WO 2014111978A1
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- Prior art keywords
- acid
- modified polypropylene
- metal
- resin composition
- polypropylene layer
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- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- GTZCVFVGUGFEME-UHFFFAOYSA-N trans-aconitic acid Natural products OC(=O)CC(C(O)=O)=CC(O)=O GTZCVFVGUGFEME-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XJUNLJFOHNHSAR-UHFFFAOYSA-J zirconium(4+);dicarbonate Chemical compound [Zr+4].[O-]C([O-])=O.[O-]C([O-])=O XJUNLJFOHNHSAR-UHFFFAOYSA-J 0.000 description 1
Images
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Definitions
- the present invention relates to a coated metal preform, a composite in which a painted metal preform and a molded body of a thermoplastic resin composition are joined, and a method for producing the same.
- the so-called “metal material” is used in various industrial products such as automobiles.
- the “metal base material” refers to a metal that is given a shape by applying heat or force to the metal.
- the metal raw material include a metal plate, a press-formed product of the metal plate, a metal member formed by casting, forging, cutting, powder metallurgy, or the like.
- a composite in which a metal shape member and a molded body of a resin composition are joined is lighter than a component made only of metal and higher in strength than a component made only of a resin. Used in various electronic devices such as computers. Conventionally, such a composite has been manufactured by fitting a metal base material and a molded body of a resin composition. However, the method for producing a composite by fitting has a large number of work steps and has low productivity. Therefore, in recent years, it is common to manufacture a composite by joining a metal base material and a molded body of a resin composition by insert molding.
- the surface of the metal base material is roughened in order to use the anchor effect.
- a fine gap is likely to be formed between the metal base material and the molded body of the resin composition. Therefore, in the composites described in Patent Documents 1 to 3, the sealing property between the metal base material and the molded body of the resin composition is low, and the gap between the metal base material and the molded body of the resin composition is low. There was a risk of leakage of gas or liquid from
- the present inventors have found that the above-mentioned problems can be solved by forming an acid-modified polypropylene layer on the surface of a metal base material using a predetermined acid-modified polypropylene, and have further studied and completed the present invention. .
- the present invention relates to the following painted metal shapes and composites.
- It has a metal base material and an acid-modified polypropylene layer disposed on the metal base material and containing 40% by mass or more of acid-modified polypropylene, and the melt viscosity of the acid-modified polypropylene layer is 1000
- a coated metal preform having a thickness of ⁇ 10,000 mPa ⁇ s and a thickness of the acid-modified polypropylene layer of 0.2 ⁇ m or more.
- the degree of distortion (Rsk) of the surface roughness curve of the surface on which the acid-modified polypropylene layer is disposed in the metal base material is ⁇ 1.0 or more, and the acid-modified polypropylene in the metal base material
- the coated metal element material according to [1], wherein the surface roughness curve of the surface on which the layer is disposed has a kurtosis (Rku) of less than 5.0.
- the melting point of the acid-modified polypropylene layer is in the range of 60 to 120 ° C., and the crystallinity of the acid-modified polypropylene layer is in the range of 5 to 20%.
- thermoplastic resin composition bonded to the surface of the painted metal shaped material.
- Complex [5] The composite according to [4], wherein the thermoplastic resin composition has a molding shrinkage of 1.1% or less.
- this invention relates to the manufacturing method of the following coating metal shape materials, and the manufacturing method of a composite_body
- the distortion degree (Rsk) of the surface roughness curve of the surface on which the acid-modified polypropylene layer is formed in the metal raw material is ⁇ 1.0 or more, and the acid-modified polypropylene in the metal raw material
- the method for producing a painted metal shape material according to [6], wherein the surface roughness curve of the surface on which the layer is formed has a kurtosis (Rku) of less than 5.0.
- the melting point of the acid-modified polypropylene layer is in the range of 60 to 120 ° C., and the crystallinity of the acid-modified polypropylene layer is in the range of 5 to 20%.
- [6] or [7] The manufacturing method of the coating metal raw material of description.
- thermoplastic resin composition A method for producing a composite in which a metal base material and a molded body of a thermoplastic resin composition are joined, and the painted metal base material according to any one of [1] to [3] And a step of bringing the heated thermoplastic resin composition into contact with the surface of the painted metal preform and joining the molded body of the thermoplastic resin composition to the surface of the painted metal preform. And a method for producing a composite.
- complex which is excellent in the joining property and sealing performance between a coating metal shape material and the molded object of a thermoplastic resin composition, and the coating metal shape material used for it are provided. it can.
- Composite The composite according to the present invention includes the painted metal preform according to the present invention and a molded body of a thermoplastic resin composition bonded to the surface of the painted metal preform according to the present invention.
- complex which concerns on this invention is demonstrated.
- the painted metal shaped material according to the present invention includes a metal shaped material (A) and an acid-modified polypropylene layer (C) disposed on the surface of the metal shaped material.
- the chemical conversion treatment film (B) may be disposed between the metal base material and the acid-modified polypropylene layer.
- metal element shape material used as a coating substrate is not particularly limited.
- metal shapes include cold rolled steel sheets, galvanized steel sheets, Zn—Al alloy plated steel sheets, Zn—Al—Mg alloy plated steel sheets, aluminum plated steel sheets, stainless steel sheets (austenite, martensite, ferrite, (Including ferrite and martensite two-phase systems), metal plates such as aluminum plates, aluminum alloy plates and copper plates, press-formed products thereof, castings and forgings such as aluminum die-casting and zinc die-casting, cutting, powder metallurgy
- the metal shaped material may be subjected to known coating pretreatments such as degreasing and pickling as necessary.
- the skewness (Rsk) of the surface roughness curve on the surface of the metal base material is preferably ⁇ 1.0 or more, and more preferably in the range of 0 to ⁇ 0.4.
- Rsk is less than ⁇ 1.0, the concave portion on the surface of the metal base material is small (the width of the concave portion is narrow), so that the flow of the acid-modified polypropylene may be hindered and gas sealing performance may be deteriorated.
- only the surface on which the acid-modified polypropylene layer is disposed may be a predetermined Rsk, or both surfaces may be a predetermined Rsk.
- the kurtosis (Rku) of the surface roughness curve on the surface of the metal base material is preferably less than 5.0, and more preferably in the range of 2 to 3.
- Rku is 5.0 or more
- the convex portion has a sharp shape, and there is a possibility that a portion that is not covered with the acid-modified polypropylene layer is generated. Thereby, there exists a possibility that the joining force of a coating metal shape material and the molded object of a thermoplastic resin composition may fall.
- the surface on which the acid-modified polypropylene layer is disposed may be a predetermined Rku, or both surfaces may be a predetermined Rku.
- Rsk and Rku are defined in JIS B B0601-2001. Rsk and Rku are measured using a contact-type surface roughness meter (ET4000AK31; Kosaka Laboratory Ltd.).
- the method for adjusting Rsk and Rku on the surface of the metal base material is not particularly limited. Examples of methods for adjusting Rsk and Rku on the surface of the metal base material include adjustment of roll roughness during temper rolling, and blasting such as grit blasting, garnet blasting, sand blasting and shot blasting. In addition, when the metal base material is a plating material, Rsk and Rku on the surface of the metal base material can be adjusted by adjusting the surface state of the material before plating.
- the chemical conversion treatment film may be disposed between the metal raw material and the acid-modified polypropylene layer in the coated metal shape material.
- the chemical conversion treatment film is disposed on the surface of the metal base material, and improves the adhesion between the metal base material and the acid-modified polypropylene layer and the corrosion resistance of the painted metal base material.
- the chemical conversion coating may be disposed at least in a region (joint surface) to be joined to the molded body of the thermoplastic resin composition in the surface of the metal raw material, but usually on the entire surface of the metal raw material. Has been placed.
- the kind of chemical conversion treatment which forms a chemical conversion treatment film is not specifically limited.
- the chemical conversion treatment include chromate treatment, chromium-free treatment, phosphate treatment and the like.
- the adhesion amount of the chemical conversion film formed by the chemical conversion treatment is not particularly limited as long as it is within a range effective for improving coating film adhesion and corrosion resistance.
- the adhesion amount may be adjusted so that the total Cr conversion adhesion amount is 5 to 100 mg / m 2 .
- the Ti-Mo composite coating has a range of 10 to 500 mg / m 2
- the fluoroacid-based coating has a fluorine equivalent or total metal element equivalent deposit of 3 to 100 mg / m 2.
- the adhesion amount may be adjusted. In the case of a phosphate film, the adhesion amount may be adjusted so as to be 0.1 to 5 g / m 2 .
- the acid-modified propylene layer is disposed on the surface of a metal base material (or chemical conversion film) and is a layer containing 40% by mass or more of acid-modified polypropylene.
- the acid-modified polypropylene layer improves the adhesion between the painted metal preform and the molded article of the thermoplastic resin composition.
- the compatibility between the acid-modified polypropylene layer and the molded article of the thermoplastic resin composition is lowered. Thereby, there exists a possibility that the joining force of the coating metal shape material and the molded object of a thermoplastic resin composition may not be obtained.
- a paint containing acid-modified polypropylene having a melting point and crystallinity within a predetermined range is applied to the surface of the metal base material (or chemical conversion film), and the solvent (water) is evaporated by heating and drying. It is formed by letting.
- the melt viscosity of the acid-modified polypropylene layer containing 40% by mass or more of the acid-modified polypropylene is in the range of 1000 to 10,000 mPa ⁇ s.
- the melt viscosity of the acid-modified polypropylene is less than 1000 mPa ⁇ s, the acid-modified polypropylene layer flows during bonding with the molded article of the thermoplastic resin composition, and compatibility with the thermoplastic resin composition occurs. Therefore, there is a possibility that the bonding strength between the painted metal base material and the molded body of the thermoplastic fat composition cannot be obtained.
- melt viscosity of the acid-modified polypropylene is more than 10,000 mPa ⁇ s
- compatibility between the acid-modified polypropylene layer and the molded article of the thermoplastic resin composition is lowered, so that the coated metal preform and the thermoplastic fat composition
- the melt viscosity of the acid-modified polypropylene layer is measured with a Brookfield viscometer.
- the acid-modified polypropylene layer in the painted metal profile according to the present invention may contain an acid-modified polypropylene having a melting point in the range of 60 to 120 ° C. and a crystallinity in the range of 5 to 20%. preferable. Since the acid-modified polypropylene having a melting point and a crystallinity within the above ranges have high wettability with respect to the surface of the metal base material, the acid-modified polypropylene layer is in close contact with the irregularities on the surface of the metal base material. When the melting point of the acid-modified polypropylene is less than 60 ° C. or the crystallinity is less than 5%, the acid-modified polypropylene layer is softened at a relatively low temperature.
- the melting point of the acid-modified polypropylene exceeds 120 ° C. or the degree of crystallinity exceeds 20%, the bondability between the painted metal preform and the molded body of the thermoplastic resin composition may be lowered.
- the melting point and crystallinity of the acid-modified polypropylene hardly change between the state contained in the paint (before baking) and the state of the acid-modified polypropylene layer (after baking). Therefore, the degree of crystallinity of the acid-modified polypropylene in the acid-modified polypropylene layer can be examined by measuring a paint described later containing the acid-modified polypropylene by X-ray diffraction by the Ruland method.
- the film thickness of the acid-modified polypropylene layer is 0.2 ⁇ m or more.
- the film thickness of the acid-modified polypropylene layer is less than 0.2 ⁇ m, the surface of the metal base material cannot be uniformly covered.
- the composite having an acid-modified polypropylene layer having a film thickness of less than 0.2 ⁇ m is formed by forming a fine gap between the metal base material and the molded body of the thermoplastic resin composition.
- the bonding force between the material and the molded body of the thermoplastic resin composition is reduced.
- gap arises, there exists a possibility that the sealing performance in the above-mentioned composite body may fall.
- the upper limit of the film thickness of the acid-modified polypropylene layer is not particularly limited, but the film thickness is preferably 3 ⁇ m or less. Even if the film thickness exceeds 3 ⁇ m, no significant performance improvement is observed, and it is disadvantageous from the viewpoint of manufacturing and cost.
- the composition of the coating applied to the surface of the metal shape material is not particularly limited as long as it contains the acid-modified polypropylene.
- the paint applied to the surface of the metal base material contains acid-modified polypropylene aqueous emulsion, non-acid-modified aqueous resin emulsion, cross-linking agent, rust preventive agent, lubricant, stabilizer and antifoaming agent. To do.
- each component will be described.
- the acid-modified polypropylene emulsion can be prepared by preparing an acid-modified polypropylene and then dispersing the acid-modified polypropylene in water.
- the acid-modified polypropylene emulsion may contain various surfactants as an emulsifier.
- the amount of the acid-modified polypropylene in the paint can be prepared by blending an acid-modified polypropylene emulsion and a non-acid-modified aqueous resin emulsion.
- Polypropylene is known for isotacticity, atacticity, syndiotactic, hemi-isotactic and stereotactic tacticity.
- the stereoregularity of polypropylene is preferably isotactic from the viewpoint of mechanical properties such as rigidity and impact strength required after molding or durability.
- the weight average molecular weight of polypropylene is preferably in the range of 1000 to 300,000, and more preferably in the range of 5000 to 100,000.
- the weight average molecular weight of polypropylene is less than 1000, the strength of the acid-modified polypropylene layer may be lowered.
- the weight average molecular weight of polypropylene is more than 300,000, the viscosity increases in the modification step described later, which may make the operation difficult.
- the acid modification of polypropylene involves dissolving polypropylene in toluene or xylene, and in the presence of a radical generator, an acid anhydride of ⁇ , ⁇ -unsaturated carboxylic acid and / or ⁇ , ⁇ -unsaturated carboxylic acid and / or 1 This can be done using compounds having one or more double bonds per molecule.
- a radical generator capable of raising the temperature to the softening temperature or higher than the melting point of polypropylene, ⁇ , ⁇ -unsaturated carboxylic acid and / or ⁇ , ⁇ -unsaturation in the presence or absence of a radical generator
- Carboxylic acid anhydrides and / or compounds having one or more double bonds per molecule can be used.
- the types of radical generator include di-tert-butyl perphthalate, tert-butyl hydroperoxide, dicumyl peroxide, benzoyl peroxide, tert-butyl peroxybenzoate, tert-butyl peroxyethyl hexanoate, tert -Peroxides such as butyl peroxypivalate, methyl ethyl ketone peroxide, di-tert-butyl peroxide, and azonitriles such as azobisisobutyronitrile and azobisisopropionitrile.
- the blending amount of the radical generator is preferably in the range of 0.1 to 50 parts by mass with respect to 100 parts by mass of polypropylene. Particularly preferably, it is in the range of 0.5 to 30 parts by mass.
- the types of ⁇ , ⁇ -unsaturated carboxylic acids or acid anhydrides include maleic acid, maleic anhydride, fumaric acid, citraconic acid, citraconic anhydride, mesaconic acid, itaconic acid, itaconic anhydride, aconitic acid, aconitic anhydride Contains acid. These compounds may be used alone or in combination of two or more. When two or more compounds are used in combination, the properties of the acid-modified polypropylene layer are often improved.
- Compounds having one or more double bonds per molecule include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, (meth) acrylic acid- 2-hydroxyethyl, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, cyclohexyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, isobornyl (meth) acrylate, Benzyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, benzyl (meth) acrylate, glycidyl (meth) acrylate, (meth) acrylic acid, di (meth) acrylic acid (di) ethylene glycol, Di (meth) acrylic acid-1,4-butanediol, di (meth) acrylic acid-1,6-hexa (Meth
- the compounding amount of the compound having a double bond is preferably in the range of 0.1 to 50 parts by mass with respect to 100 parts by mass of polypropylene. Particularly preferably, it is in the range of 0.5 to 30 parts by mass.
- the acid value of the acid-modified polypropylene is preferably 1 to 500 mg ⁇ KOH / g or less. If it is a predetermined acid value, the compound polymer itself which has a double bond acts as surfactant by neutralizing at the time of the below-mentioned emulsification.
- this modification reaction is performed in a solution state in an organic solvent such as toluene and / or xylene, or in a non-uniform dispersion system performed in a non-solvent such as an aqueous system, sufficient nitrogen substitution is required. There is. In this way, acid-modified polypropylene can be prepared.
- the aqueous resin emulsion can be prepared by blending and dispersing water in the acid-modified polypropylene prepared as described above.
- a surfactant may be added to the aqueous resin emulsion.
- the kind of surfactant is not specifically limited. Examples of the surfactant include nonionic surfactants, anionic surfactants, and cationic surfactants. In place of these surfactants, polymer emulsifiers or dispersants may be used. These surfactants may be used alone or in combination of two or more.
- the blending amount of the surfactant is preferably in the range of 1 to 100 parts by mass with respect to 100 parts by mass of the modified polypropylene.
- An aqueous resin emulsion not acid-modified can be prepared by dispersing a predetermined resin in water.
- resins used in water-based resin emulsions that are not acid-modified include acrylic resins, acrylic / styrene resins, vinyl acetate, EVA (ethylene-vinyl acetate copolymer resins), fluorine resins, urethane resins, esters Resin, olefin resin, or a combination thereof.
- the crosslinking agent crosslinks the acid-modified polypropylene and improves the strength of the film.
- the type of the crosslinking agent is not particularly limited. Examples of cross-linking agents include those having isocyanate, epoxy, oxazoline, melamine, or metal salts.
- the blending amount of the crosslinking agent in the coating is preferably in the range of 1 to 30 parts by mass with respect to 100 parts by mass of the acid-modified polypropylene. When the crosslinking agent is less than 1 part by mass, the acid-modified polypropylene may not be sufficiently crosslinked. On the other hand, when the crosslinking agent exceeds 30 parts by mass, there is a risk of thickening and solidifying the treatment liquid.
- the rust inhibitor improves the corrosion resistance of the coated metal preform according to the present invention and the composite according to the present invention.
- the kind of rust preventive agent is not specifically limited.
- the rust preventive agent preferably include an oxide, hydroxide or fluoride of a metal (valve metal) selected from the group consisting of Ti, Zr, V, Mo and W, or a combination thereof.
- a metal valve metal
- these metal fluorides can also be expected to suppress corrosion at film defects by a self-repairing action.
- the acid-modified polypropylene layer may further contain a soluble or hardly soluble metal phosphate or composite phosphate.
- the soluble metal phosphate or composite phosphate further improves the corrosion resistance of the metal base material by complementing the self-healing action of the metal fluoride.
- the hardly soluble metal phosphate or the composite phosphate is dispersed in the coating film to improve the film strength.
- the soluble or poorly soluble metal phosphate or complex phosphate is a salt such as Al, Ti, Zr, Hf, Zn.
- Lubricant can suppress the occurrence of galling on the surface of the painted metal profile according to the present invention.
- the type of lubricant is not particularly limited.
- examples of lubricants include organic waxes such as fluorine, polyethylene, styrene, and polypropylene, and inorganic lubricants such as molybdenum disulfide and talc.
- the blending amount of the lubricant in the paint is preferably in the range of 1 to 20 parts by mass with respect to 100 parts by mass of the acid-modified polypropylene. When the lubricant is less than 1 part by mass, the generation of galling may not be sufficiently suppressed. On the other hand, when the amount of the lubricant exceeds 20 parts by mass, no significant improvement is observed in the effect of suppressing the generation of galling, and the lubricity is too high and the handleability may be inferior.
- Defoaming agent makes it difficult for bubbles to be generated when preparing paint.
- the type of the antifoaming agent is not particularly limited, but an appropriate amount of a known silicone-based antifoaming agent may be added as necessary.
- thermoplastic resin composition The molded body of the thermoplastic resin composition is bonded to the surface of the coated metal shaped material (more precisely, the surface of the acid-modified polypropylene layer).
- the thermoplastic resin composition constituting the molded body is a non-crystalline resin composition such as a PVC (polyvinyl chloride) resin composition, a PMMA (methacrylic acid) resin composition, or a PE (polyethylene) resin composition.
- PP polypropylene
- crystalline resin compositions such as POM (polyacetal) resin compositions, or combinations thereof.
- the shape of the molded article of the thermoplastic resin composition is not particularly limited and can be appropriately selected depending on the application.
- the molding shrinkage of the molded article of the thermoplastic resin composition is preferably 1.1% or less.
- the molding shrinkage of the thermoplastic resin composition can be adjusted by a known method.
- the molding shrinkage can be adjusted by adding an inorganic filler or the like to the thermoplastic resin composition containing (A) a thermoplastic elastomer.
- the molding shrinkage can also be adjusted by changing the mixing ratio of (B) crystalline resin and amorphous resin.
- thermoplastic elastomer improves the impact resistance of the molded article of the thermoplastic resin composition.
- the kind of thermoplastic elastomer is not particularly limited. Examples of thermoplastic elastomers include polyolefin resins, polystyrene resins, and combinations thereof.
- the inorganic filler reduces the molding shrinkage of the molded article of the thermoplastic resin composition and improves the rigidity.
- the kind of inorganic filler is not particularly limited, and a known substance can be used.
- inorganic fillers include fiber fillers such as glass fiber, carbon fiber, and aramid resin; carbon black, calcium carbonate, calcium silicate, magnesium carbonate, silica, talc, glass, clay, lignin, mica, quartz powder, glass Powder fillers such as spheres; pulverized products of carbon fibers and aramid fibers are included.
- An inorganic filler may be used independently and may be used in combination of 2 or more type.
- the filler content in the thermoplastic resin composition is preferably in the range of 5 to 60% by mass, more preferably in the range of 10 to 40% by mass.
- Molding shrinkage ratio of the thermoplastic resin composition can also be adjusted by mixing the crystalline resin and the amorphous resin.
- the molding shrinkage rate of the crystalline resin is larger than the molding shrinkage rate of the amorphous resin. Therefore, if the mixing ratio of the amorphous resin to the crystalline resin is increased, the molding shrinkage rate of the thermoplastic resin composition can be decreased.
- the manufacturing method of the composite body according to the present invention includes (1) a first step of preparing a painted metal shape material according to the present invention, and (2) a surface of the painted metal shape material heated. And a second step of bringing the molded body of the thermoplastic resin composition into contact with the surface of the painted metal base material by bringing the thermoplastic resin composition into contact therewith.
- each step will be described.
- a painted metal shape material according to the present invention is prepared.
- the painted metal shape material according to the present invention is formed by applying a paint containing a predetermined acid-modified polypropylene to the surface of the metal shape material and drying it to form an acid-modified polypropylene layer.
- a chemical conversion treatment film may be formed before forming the acid-modified polypropylene layer.
- the chemical conversion treatment film can be formed by applying a chemical conversion treatment liquid to the surface of the metal raw material and drying it.
- the method for applying the chemical conversion liquid is not particularly limited, and may be appropriately selected from known methods. Examples of such a coating method include a roll coating method, a curtain flow method, a spin coating method, a spray method, and a dip pulling method. What is necessary is just to set suitably the drying conditions of a chemical conversion liquid according to the composition of a chemical conversion liquid, etc.
- the surface of the metal shape material can be obtained by putting the metal shape material coated with the chemical conversion treatment solution into a drying oven without washing, and heating so that the ultimate plate temperature is in the range of 80 to 250 ° C. A uniform chemical conversion coating can be formed.
- the acid-modified polypropylene layer is formed by applying a paint containing the above-mentioned acid-modified polypropylene to the surface of a metal base material (or chemical conversion film) and drying it.
- the method for applying the paint is not particularly limited, and may be appropriately selected from known methods. Examples of such a coating method include a roll coating method, a curtain flow method, a spin coating method, a spray method, and a dip pulling method.
- a drying method is not specifically limited, What is necessary is just to volatilize the solvent (water) in a coating film. For example, a metal base material coated with acid-modified polypropylene is dried without being washed with water.
- the drying temperature is not particularly limited, but it is preferable that the ultimate plate temperature during drying is 250 ° C. or lower and the melting point of the acid-modified polypropylene or higher.
- the ultimate plate temperature By setting the ultimate plate temperature to 250 ° C. or less, it is possible to form an acid-modified polypropylene layer that is in close contact with the surface of the metal base material (or chemical conversion film) without any gap.
- the drying temperature by setting the drying temperature to be equal to or higher than the melting point of the acid-modified polypropylene, the emulsion particles of the acid-modified polypropylene are melted and the acid-modified polypropylene tends to be in a film form.
- the drying time is not particularly limited.
- the drying temperature When the drying temperature is low, it is possible to form an acid-modified polypropylene layer that adheres tightly to the surface of the metal base material (or chemical conversion film) by increasing the drying time.
- the drying temperature when the drying temperature is high, the drying time is shortened by using a drying oven or the like, thereby suppressing the decomposition of the acid-modified polypropylene, and the acid adhered to the surface of the metal base material (or chemical conversion film) without any gap.
- a modified polypropylene layer can be formed.
- Second step In the second step, the surface of the painted metal preform is brought into contact with the heated thermoplastic resin composition, and the molded body of the thermoplastic resin composition is joined to the surface of the painted metal preform.
- the painted metal shape material may be processed into a desired shape by pressing or the like.
- the coated metal preform according to the present invention prepared in the first step is inserted into an injection mold and then the molten thermoplastic resin composition is injected into the injection mold at a high pressure. Good. At this time, it is preferable to provide a gas vent in the injection mold so that the thermoplastic resin composition flows smoothly.
- the molten thermoplastic resin composition is compatible with the organic resin layer formed on the surface of the metal base material.
- the temperature of the injection mold is preferably near the melting point of the thermoplastic resin composition.
- the composite obtained by injection molding may be annealed after molding to eliminate internal distortion due to molding shrinkage.
- thermoplastic resin composition reinforced with glass fibers or carbon fibers (so-called stampable sheet) or the like can be used as the thermoplastic resin composition.
- heating and pressurization may be performed on all or part of the painted metal preform and the thermoplastic resin composition. It is necessary to heat and press at least the joint surfaces of the painted metal shape material and the thermoplastic resin composition. Part of the heated and pressurized acid-modified polypropylene layer and part of the thermoplastic resin composition are melted and compatible.
- the method for heating and pressurizing the painted metal shape material and the thermoplastic resin composition is not particularly limited.
- Examples of the heating method include heater heating, electromagnetic induction heating, and ultrasonic heating.
- Examples of the pressurizing method include pressurization by human power, pressurization using a vise and the like.
- the composite of the present invention can be produced by joining the molded body of the thermoplastic resin composition to the surface of the painted metal shape material.
- a paint containing acid-modified polypropylene having a melting point and a crystallinity within a predetermined range is applied to the surface of the metal shaped material and dried.
- the paint is brought into intimate contact with the surface of the metal base material to form an acid-modified polypropylene layer. Since this acid-modified polypropylene layer is compatible with the thermoplastic resin composition, the acid-modified polypropylene layer can be firmly bonded to the molded body of the thermoplastic resin composition without any gap. For this reason, in the composite according to the present invention, the metal base material and the molded body of the thermoplastic resin composition are joined together without any gap.
- the composite including the painted metal shape material according to the present invention is excellent in gas and liquid sealing properties because the metal shape material and the molded body of the thermoplastic resin composition are joined without gaps. ing.
- Example 1 In Example 1, the blocking resistance of the coated metal preform was examined.
- Paint base material Paint substrate 1 The surface of SUS430 with a plate thickness of 0.8 mm is No.
- the finished coating substrate 1 was prepared by finishing four.
- the Rsk on the surface of the coated original plate 1 was ⁇ 0.4, and Rku was 4.4.
- a cold-rolled steel plate (SPCC) having a plate thickness of 0.8 mm was prepared as a coated base material 5 by a molten Al-9 mass% Si alloy-plated steel plate having a plating adhesion amount of 45 g / m 2 on one side.
- the Rsk on the surface of the coated substrate 5 was ⁇ 0.9, and Rku was 4.1.
- ammonium molybdate (Kishida Chemical Co., Ltd.): 0.5% by mass
- zirconium carbonate (zircazole; Daiichi Rare Element Chemical Co., Ltd.): 0.5% by mass as a rust preventive agent
- silicone type Antifoaming agent (KM-73; Shin-Etsu Chemical Co., Ltd.): 0.05% by mass was blended.
- A. Acid-modified polypropylene resin Male acid-modified polypropylene resin having an acid value of 5 mg ⁇ KOH / g, crystallinity of 3% and 50% was obtained from a resin manufacturer. An acid-modified polypropylene resin having a crystallinity of 3%, 5%, 15%, 20%, 30% and 50% is blended at a predetermined ratio of 3% and 50% acid-modified polypropylene resin, respectively. Was prepared.
- Polyurethane resin A polyurethane resin emulsion (HUX-232; ADEKA Corporation) was used as a polyurethane resin for adjusting the ratio of the acid-modified polypropylene to the total resin mass.
- Epoxy-based crosslinking agent Epoxy resin (EM-0461N; ADEKA Corporation) was added in an amount of 5% by mass based on the total mass of the resin.
- the coated metal shapes 1 to 12, 14, 16 to 20 were excellent in blocking resistance between the painted metal shapes because the melting point and crystallinity of the acid-modified polypropylene layer were within the predetermined ranges. .
- no. No. 13 of the painted metal profile has a melting point of the acid-modified polypropylene layer of less than 60 ° C. Since the coated metal preform 15 had a crystallinity of less than 5% in the acid-modified polypropylene layer, the blocking resistance between the painted metal preforms was inferior.
- Example 2 In Example 2, the bonding strength of the composite and the gas sealing property of the composite were examined.
- Thermoplastic resin composition As a polyethylene (PE) resin composition, Nipolon Hard 1000 (melting point 134 ° C; Tosoh Corporation) was used. Prime Polypro R-350G (melting point 150 ° C .; Prime Polymer Co., Ltd.) was used as the polypropylene (PP) resin composition. Kanevinyl S-400 (melting point 159 ° C .; Kaneka Corporation) was used as the polyvinyl chloride (PVC) resin composition. Parapet GF (melting point: 110 ° C .; Kuraray Co., Ltd.) was used as the PMMA (methacrylic acid) resin composition. As the POM (polyacetal) resin composition, Duracon TF-30 (melting point: 165 ° C .; Polyplastics Co., Ltd.) was used.
- POM polyacetal
- Duracon TF-30 melting point: 165 ° C .; Polyplastics Co., Ltd.
- FIG. 1 is a schematic view of a composite.
- FIG. 1A is a schematic diagram of a composite for measuring bonding strength
- FIG. 1B is a schematic diagram of a composite for measuring gas sealing properties.
- thermoplastic resin composition for measuring bonding force Insert the painted metal mold into the injection mold and inject the molten thermoplastic resin composition into the cavity of the injection mold. did. As shown in FIG. 1A, the shape of the cavity is 30 mm wide ⁇ 100 mm long ⁇ 4 mm thick. Moreover, the thermoplastic resin composition and the coating metal shape material are contacting in the area
- the injection mold is coated with a hole of ⁇ 70 mm and ⁇ 10 mm in the center.
- the metal base material was inserted, and the thermoplastic resin composition in a molten state was injected into an injection mold.
- the shape of the cavity of the injection mold is ⁇ 12 mm ⁇ thickness 2 mm.
- After injecting the thermoplastic resin composition into an injection mold it was cooled and solidified to obtain a composite of a coating metal preform for measuring gas sealing properties and a molded body of the thermoplastic resin composition.
- the molded body of the painted metal material and the thermoplastic resin composition is in contact with a 1 mm width around a hole of ⁇ 10 mm provided in the center of the painted metal material.
- the combination of the coating metal shape material and the thermoplastic resin composition in the composite prepared for gas sealing property measurement is in the composite prepared for bonding force measurement. This is the same as the combination of the painted metal shape material and the thermoplastic resin composition (see Table 3).
- FIG. 2 is a schematic diagram of measurement of the leak amount of helium gas.
- the prepared composite was placed in a sealed container made of SUS, helium gas was injected at 0.3 MPa for 3 minutes, and the amount of leaked helium gas at the junction was measured by a sniffer method.
- the case where the leak amount of helium gas is 10 Pa ⁇ m 3 / s or more is evaluated as “ ⁇ ”, and the case where it is 10 ⁇ 3 Pa ⁇ m 3 / s or more and less than 10 Pa ⁇ m 3 / s is indicated as “ ⁇ ”.
- the amount of acid-modified polypropylene in the acid-modified polypropylene layer is 40% by mass or more
- the melt viscosity of the acid-modified polypropylene layer is in the range of 1000 to 10,000 mPa ⁇ s
- the film thickness is 0.00. Since it was 2 ⁇ m or more, the bonding strength and gas sealing property between the painted metal shape material and the resin composition were excellent.
- the acid-modified polypropylene layer had a film thickness of less than 0.2 ⁇ m, so that the bonding strength and gas sealing property between the coated metal shaped material and the molded body of the thermoplastic resin composition were inferior.
- the acid-modified polypropylene layer had an acid-modified polypropylene content of less than 40% by mass, so that the bonding strength between the painted metal preform and the molded body of the thermoplastic resin composition was inferior.
- the composite containing the painted metal shape material of the present invention is excellent in gas and liquid sealing properties, and therefore can block humidity, corrosive gas, etc., and can be used for automobile inverter cases and ECUs (engine control units). ) Useful for cases and precision electronic parts cases for electrical products.
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Abstract
Description
[1]金属素形材と、前記金属素形材の上に配置された、酸変性ポリプロピレンを40質量%以上含む酸変性ポリプロピレン層とを有し、前記酸変性ポリプロピレン層の溶融粘度は、1000~10000mPa・sであり、前記酸変性ポリプロピレン層の膜厚は、0.2μm以上である、塗装金属素形材。
[2]前記金属素形材における前記酸変性ポリプロピレン層が配置された面の表面粗さ曲線の歪度(Rsk)は、-1.0以上であり、前記金属素形材における前記酸変性ポリプロピレン層が配置された面の表面粗さ曲線の尖度(Rku)は、5.0未満である、[1]に記載の塗装金属素形材。
[3]前記酸変性ポリプロピレン層の融点は、60~120℃の範囲内であり、前記酸変性ポリプロピレン層の結晶化度は、5~20%の範囲内である、[1]または[2]に記載の塗装金属素形材。
[4][1]~[3]のいずれか一項に記載の塗装金属素形材と、前記塗装金属素形材の表面に接合された、熱可塑性樹脂組成物の成形体と、を有する、複合体。
[5]前記熱可塑性樹脂組成物の成形収縮率は、1.1%以下である、[4]に記載の複合体。
[6]金属素形材を準備する準備工程と、前記金属素形材の表面に、溶融粘度が1000~10000mPa・sの範囲内である酸変性ポリプロピレンを含む塗料を塗布し、乾燥させて、酸変性ポリプロピレンを40質量%以上含み、かつ膜厚が0.2μm以上である酸変性ポリプロピレン層を形成する形成工程と、を有する、塗装金属素形材の製造方法。
[7]前記金属素形材における前記酸変性ポリプロピレン層が形成される面の表面粗さ曲線の歪度(Rsk)は、-1.0以上であり、前記金属素形材における前記酸変性ポリプロピレン層が形成される面の表面粗さ曲線の尖度(Rku)は、5.0未満である、[6]に記載の塗装金属素形材の製造方法。
[8]前記酸変性ポリプロピレン層の融点は、60~120℃の範囲内であり、前記酸変性ポリプロピレン層の結晶化度は、5~20%の範囲内である、[6]または[7]に記載の塗装金属素形材の製造方法。
[9]金属素形材と熱可塑性樹脂組成物の成形体とが接合された複合体の製造方法であって、[1]~[3]のいずれか一項に記載の塗装金属素形材を準備するステップと、前記塗装金属素形材の表面に加熱された熱可塑性樹脂組成物を接触させて、前記塗装金属素形材の表面に前記熱可塑性樹脂組成物の成形体を接合するステップと、を有する、複合体の製造方法。
[10]前記熱可塑性樹脂組成物の成形収縮率は、1.1%以下である、[9]に記載の複合体の製造方法。
本発明に係る複合体は、本発明に係る塗装金属素形材と、本発明に係る塗装金属素形材の表面に接合された熱可塑性樹脂組成物の成形体とを有する。以下、本発明に係る複合体の各構成要素について説明する。
本発明に係る塗装金属素形材は、金属素形材(A)と、金属素形材の表面に配置された酸変性ポリプロピレン層(C)とを有する。塗装金属素形材は、金属素形材と酸変性ポリプロピレン層との間に化成処理皮膜(B)が配置されていてもよい。以下、塗装金属素形材の各構成要素について説明する。
塗装基材となる金属素形材の種類は、特に限定されない。金属素形材の例には、冷延鋼板、亜鉛めっき鋼板、Zn-Al合金めっき鋼板、Zn-Al-Mg合金めっき鋼板、アルミニウムめっき鋼板、ステンレス鋼板(オーステナイト系、マルテンサイト系、フェライト系、フェライト・マルテンサイト二相系を含む)、アルミニウム板、アルミニウム合金板、銅板などの金属板や、そのプレス加工品、あるいは、アルミダイカスト、亜鉛ダイカストなどの鋳造・鍛造物や、切削加工、粉末冶金などにより成形された各種金属部材などが含まれる。金属素形材は、必要に応じて、脱脂、酸洗などの公知の塗装前処理が施されていてもよい。
前述のように、塗装金属素形材は、金属素形材と酸変性ポリプロピレン層との間に化成処理皮膜が配置されていてもよい。化成処理皮膜は、金属素形材の表面に配置されており、金属素形材と酸変性ポリプロピレン層との間の密着性および塗装金属素形材の耐食性を向上させる。化成処理皮膜は、金属素形材の表面のうち、少なくとも熱可塑性樹脂組成物の成形体と接合する領域(接合面)に配置されていればよいが、通常は金属素形材の表面全体に配置されている。
酸変性プロピレン層は、金属素形材(または化成処理皮膜)の表面に配置されており、酸変性ポリプロピレンを40質量%以上含む層である。酸変性ポリプロピレン層は、塗装金属素形材と熱可塑性樹脂組成物の成形体との密着性を向上させる。酸変性ポリプロピレン層の酸変性ポリプロピレン含有量が40質量%未満の場合、酸変性ポリプロピレン層と熱可塑性樹脂組成物の成形体との相溶性が低下してしまう。これにより、塗装金属素形材と熱可塑性樹脂組成物の成形体との接合力が得られないおそれがある。酸変性ポリプロピレン層は、融点および結晶化度が所定の範囲内の酸変性ポリプロピレンを含む塗料を金属素形材(または化成処理皮膜)の表面に塗布し、加熱乾燥により、溶媒(水)を蒸発させることで形成される。
熱可塑性樹脂組成物の成形体は、塗装金属素形材の表面(より正確には、酸変性ポリプロピレン層の表面)に接合されている。成形体を構成する熱可塑性樹脂組成物は、PVC(ポリ塩化ビニル)系樹脂組成物、PMMA(メタアクリル酸)系樹脂組成物などの非結晶性樹脂組成物、またはPE(ポリエチレン)系樹脂組成物、PP(ポリプロピレン)系樹脂組成物、POM(ポリアセタール)系樹脂組成物などの結晶性樹脂組成物、またはこれらの組み合わせである。熱可塑性樹脂組成物の成形体の形状は、特に限定されず、用途に応じて適宜選択されうる。
熱可塑性エラストマーは、熱可塑性樹脂組成物の成形体の耐衝撃性を向上させる。熱可塑性エラストマーの種類は、特に限定されない。熱可塑性エラストマーの例には、ポリオレフィン系樹脂、ポリスチレン系樹脂およびこれらの組み合わせなどが含まれる。無機フィラーは、熱可塑性樹脂組成物の成形体の成形収縮率を低減させるとともに、剛性を向上させる。無機フィラーの種類は、特に限定されず、既知の物質を使用することができる。無機フィラーの例には、ガラス繊維、炭素繊維、アラミド樹脂などの繊維系フィラー;カーボンブラック、炭酸カルシウム、ケイ酸カルシウム、炭酸マグネシウム、シリカ、タルク、ガラス、粘土、リグニン、雲母、石英粉、ガラス球などの粉フィラー;炭素繊維やアラミド繊維の粉砕物などが含まれる。無機フィラーは、単独で使用してもよいし、2種以上を組み合わせて使用してもよい。熱可塑性樹脂組成物におけるフィラーの含有量は、5~60質量%の範囲内が好ましく、10~40質量%の範囲内がより好ましい。
熱可塑樹脂組成物の成形収縮率は、結晶性樹脂と非結晶性樹脂とを混合することによっても調整されうる。一般的に、結晶性樹脂の成形収縮率は、非結晶性樹脂の成形収縮率より大きい。よって、結晶性樹脂に対する非結晶性樹脂の混合比率を高くすれば、熱可塑樹脂組成物の成形収縮率を低くすることができる。
本発明に係る複合体の製造方法は、(1)本発明に係る塗装金属素形材を準備する第1工程と、(2)塗装金属素形材の表面に加熱された熱可塑性樹脂組成物を接触させて、塗装金属素形材の表面に熱可塑性樹脂組成物の成形体を接合する第2工程と、を有する。以下、各工程について説明する。
第1工程では、本発明に係る塗装金属素形材を準備する。前述のとおり、本発明に係る塗装金属素形材は、所定の酸変性ポリプロピレンを含む塗料を金属素形材の表面に塗布し、乾燥させて、酸変性ポリプロピレン層を形成することで形成される。酸変性ポリプロピレン層を形成する前に、化成処理皮膜を形成してもよい。
第2工程では、塗装金属素形材の表面に加熱された熱可塑性樹脂組成物を接触させて、塗装金属素形材の表面に熱可塑性樹脂組成物の成形体を接合する。塗装金属素形材は、プレス加工などにより所望の形状に加工されていてもよい。
実施例1では、塗装金属素形材の耐ブロッキング性について調べた。
(1)塗装基材
A.塗装基材1
板厚が0.8mmのSUS430の表面をNo.4仕上げして塗装基材1を準備した。塗装原板1表面のRskは-0.4であり、Rkuは4.4であった。
塗装基材1の表面をサンドブラスト処理して塗装基材2を準備した。塗装基材2表面のRskは-0.3であり、Rkuは5.2であった。
塗装基材1の表面をショットブラスト処理して塗装基材3を準備した。塗装基材3表面のRskは-1.3であり、Rkuは、4.5であった。
板厚が0.8mmの冷間圧延鋼板(SPCC)に、片面あたりのめっき付着量が45g/m2の溶融Zn-6質量%Al-3質量%Mg合金めっき鋼板を塗装基材4として準備した。塗装基材4表面のRskは-0.3であり、Rkuは2.3であった。
板厚が0.8mmの冷間圧延鋼板(SPCC)に、片面あたりのめっき付着量が45g/m2の溶融Al-9質量%Si合金めっき鋼板を塗装基材5として準備した。塗装基材5表面のRskは-0.9であり、Rkuは4.1であった。
板厚が0.8mmの冷間圧延鋼板(SPCC)に、片面あたりのめっき付着量が45g/m2の合金化溶融Znめっき鋼板を塗装基材6として準備した。塗装基材6表面のRskは0.3であり、Rkuは2.7であった。
樹脂合計質量に対する酸変性ポリプロピレンの割合が表1に示す割合になるように、酸変性ポリプロピレン樹脂(A)、ポリウレタン系樹脂(B)、ポリエチレンワックス(C)、エポキシ系架橋剤(D)を水に添加して、不揮発成分が20%の塗料を調製した。また、塗料には、防錆剤としてモリブデン酸アンモニウム(キシダ化学株式会社):0.5質量%、炭酸ジルコニウムアンモニウム(ジルコゾール;第一稀元素化学工業株式会社):0.5質量%、シリコーン系消泡剤(KM-73;信越化学工業株式会社):0.05質量%をそれぞれ配合した。
樹脂メーカーより、マレイン酸変性され、酸価が5mg・KOH/g、結晶化度が3%および50%の酸変性ポリプロピレン樹脂を入手した。結晶化度が3%および50%の酸変性ポリプロピレン樹脂をそれぞれ所定の割合で配合して、結晶化度が3%、5%、15%、20%、30%および50%の酸変性ポリプロピレン樹脂を調製した。
樹脂合計質量に対する酸変性ポリプロピレンの割合を調整するためのポリウレタン系樹脂として、ポリウレタン樹脂エマルジョン(HUX-232;株式会社ADEKA)を使用した。
ポリエチレンワックス(E-9015;東邦化学工業株式会社)を樹脂合計質量に対して、5質量%添加した。
エポキシ樹脂(EM-0461N;株式会社ADEKA)を樹脂合計質量に対して、5質量%添加した。
塗装基材を液温40℃のアルカリ脱脂水溶液(SD-270;日本ペイント株式会社、pH=12)に1分間浸漬して、表面を脱脂した。次いで、脱脂した塗装基材の表面に、塗料をロールコータ-で塗布し、到達板温が150℃となるように、熱風乾燥機で乾燥させて、表1に示す膜厚の酸変性ポリプロピレン層を形成した。
(1)耐ブロッキング性の評価
各塗装金属素形材から2枚の試験片(50mm×50mm)を切り出し、それぞれの酸変性ポリプロピレン層を対向させて、加圧力0.1MPaでスタック(圧着)した。スタックした各塗装金属素形材を45℃、相対湿度80%の雰囲気に24時間放置した。24時間放置後、各塗装金属素形材のスタックを解き、酸変性ポリプロピレン層間の癒着状態を評価した。酸変性ポリプロピレン層間の癒着が認められる場合を「×」と評価し、癒着が認められない場合を「○」と評価した。使用した塗装金属素形材と耐ブロッキング性の評価結果とを表2に示す。
No.1~12,14,16~20の塗装金属素形材は、酸変性ポリプロピレン層の融点および結晶化度が所定の範囲内にあったため、塗装金属素形材間の耐ブロッキング性に優れていた。一方、No.13の塗装金属素形材は、酸変性ポリプロピレン層の融点が60℃未満であり、No.15の塗装金属素形材は、酸変性ポリプロピレン層の結晶化度が5%未満であるため、塗装金属素形材間の耐ブロッキング性が劣っていた。
実施例2では、複合体における接合力および複合体のガス封止性について調べた。
(1)塗装金属素形材
実施例1と同じNo.1~20の塗装金属素形材を準備した。
ポリエチレン(PE)系樹脂組成物として、ニポロンハード1000(融点134℃;東ソー株式会社)を使用した。ポリプロピレン(PP)系樹脂組成物として、プライムポリプロR-350G(融点150℃;株式会社プライムポリマー)を使用した。ポリ塩化ビニル(PVC)系樹脂組成物として、カネビニールS-400(融点159℃;株式会社カネカ)を使用した。PMMA(メタアクリル酸)系樹脂組成物として、パラペットGF(融点110℃;株式会社クラレ)を使用した。POM(ポリアセタール)系樹脂組成物として、ジュラコンTF-30(融点165℃;ポリプラスチックス株式会社)を使用した。
図1は、複合体の模式図である。図1Aは、接合力測定用の複合体の模式図であり、図1Bは、ガス封止性測定用の複合体の模式図である。
射出成形金型に塗装金属素形材を挿入し、溶融状態の熱可塑性樹脂組成物を射出成形金型のキャビティーに射出した。図1Aに示されるように、キャビティーの形状は、幅30mm×長さ100mm×厚さ4mmである。また、一方の幅30mm×長さ30mmの領域で熱可塑性樹脂組成物と塗装金属素形材とが接触している。熱可塑性樹脂組成物をキャビティーに射出した後、冷却固化させて、接合力測定用の塗装金属素形材と熱可塑性樹脂組成物の成形体との複合体を得た。塗装金属素形材と熱可塑性樹脂組成物との組み合わせを表3に示す。
図1Bに示されるように、射出成形金型に、φ70mmで中央部にφ10mmの穴を開けた塗装金属素形材を挿入し、溶融状態の熱可塑性樹脂組成物を射出成形金型内に射出した。射出成形金型のキャビティーの形状は、φ12mm×厚さ2mmである。熱可塑性樹脂組成物を射出成形金型内に射出した後、冷却固化させて、ガス封止性測定用の塗装金属素形材と熱可塑性樹脂組成物の成形体との複合体を得た。塗装金属素形材と熱可塑性樹脂組成物の成形体は、塗装金属素形材の中央に設けたφ10mmの穴の周囲において、1mmの幅で接触している。また、ガス封止性測定用に準備した複合体における、塗装金属素形材と熱可塑性樹脂組成物との組み合わせは、接合力測定用に準備した複合体における。塗装金属素形材と熱可塑性樹脂組成物との組み合わせと同一である(表3参照)。
(1)接合力の測定
作製した各複合体について、塗装金属素形材と熱可塑性樹脂組成物の成形体とを同一平面上の互いに逆向きの方向に100mm/分の速度で引っ張り、破断したときの強さ(剥離強度)を測定した。剥離強度が1.0kN未満の場合を「×」と評価し、剥離強度が1.0kN以上であって1.5kN未満の場合を「△」と評価し、剥離強度が1.5kN以上であって2.0kN未満の場合を「○」と評価し、剥離強度が2.0kN以上の場合を「◎」と評価した。複合体の結合力は、「△」、「○」または「◎」の場合に合格とした。
図2は、ヘリウムガスのリーク量の測定の模式図である。図2に示されるように、SUS製の密閉容器に作製した複合体を入れ、ヘリウムガスを0.3MPaで3分間注入し、スニッファー法にて接合部分のヘリウムガスのリーク量を測定した。ヘリウムガスのリーク量が10Pa・m3/s以上の場合を「×」と評価し、10-3Pa・m3/s以上であって10Pa・m3/s未満の場合を「△」と評価し、10-5Pa・m3/s以上であって10-3Pa・m3/s未満の場合を「○」と評価し、ヘリウムガスのリーク量が10-5Pa・m3/s未満の場合を「◎」と評価した。複合体のガス封止性は、「△」、「○」または「◎」の場合に合格とした。
No.1~18の複合体は、酸変性ポリプロピレン層の酸変性ポリプロピレン量が40質量%以上で、酸変性ポリプロピレン層の溶融粘度が1000~10000mPa・sの範囲内であり、かつ、膜厚が0.2μm以上あったため、塗装金属素形材と樹脂組成物の接合力およびガス封止性が優れていた。
Claims (10)
- 金属素形材と、
前記金属素形材の上に配置された、酸変性ポリプロピレンを40質量%以上含む酸変性ポリプロピレン層とを有し、
前記酸変性ポリプロピレン層の溶融粘度は、1000~10000mPa・sであり、
前記酸変性ポリプロピレン層の膜厚は、0.2μm以上である、
塗装金属素形材。 - 前記金属素形材における前記酸変性ポリプロピレン層が配置された面の表面粗さ曲線の歪度(Rsk)は、-1.0以上であり、
前記金属素形材における前記酸変性ポリプロピレン層が配置された面の表面粗さ曲線の尖度(Rku)は、5.0未満である、
請求項1に記載の塗装金属素形材。 - 前記酸変性ポリプロピレン層の融点は、60~120℃の範囲内であり、
前記酸変性ポリプロピレン層の結晶化度は、5~20%の範囲内である、
請求項1に記載の塗装金属素形材。 - 請求項1に記載の塗装金属素形材と、
前記塗装金属素形材の表面に接合された、熱可塑性樹脂組成物の成形体と、
を有する、複合体。 - 前記熱可塑性樹脂組成物の成形収縮率は、1.1%以下である、請求項4に記載の複合体。
- 金属素形材を準備する準備工程と、
前記金属素形材の表面に、溶融粘度が1000~10000mPa・sの範囲内である酸変性ポリプロピレンを含む塗料を塗布し、乾燥させて、酸変性ポリプロピレンを40質量%以上含み、かつ膜厚が0.2μm以上である酸変性ポリプロピレン層を形成する形成工程と、
を有する、塗装金属素形材の製造方法。 - 前記金属素形材における前記酸変性ポリプロピレン層が形成される面の表面粗さ曲線の歪度(Rsk)は、-1.0以上であり、
前記金属素形材における前記酸変性ポリプロピレン層が形成される面の表面粗さ曲線の尖度(Rku)は、5.0未満である、
請求項6に記載の塗装金属素形材の製造方法。 - 前記酸変性ポリプロピレン層の融点は、60~120℃の範囲内であり、
前記酸変性ポリプロピレン層の結晶化度は、5~20%の範囲内である、
請求項6に記載の塗装金属素形材の製造方法。 - 金属素形材と熱可塑性樹脂組成物の成形体とが接合された複合体の製造方法であって、
請求項1に記載の塗装金属素形材を準備するステップと、
前記塗装金属素形材の表面に加熱された熱可塑性樹脂組成物を接触させて、前記塗装金属素形材の表面に前記熱可塑性樹脂組成物の成形体を接合するステップと、
を有する、
複合体の製造方法。 - 前記熱可塑性樹脂組成物の成形収縮率は、1.1%以下である、請求項9に記載の複合体の製造方法。
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NZ709519A NZ709519A (en) | 2013-01-18 | 2013-04-26 | Shaped and coated metallic material, composite, and method for manufacturing shaped and coated metallic material and composite |
PH12015501551A PH12015501551B1 (en) | 2013-01-18 | 2015-07-10 | Shaped and coated metallic material, composite, and method for manufacturing shaped and coated metallic material and composite |
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WO2017221583A1 (ja) * | 2016-06-24 | 2017-12-28 | Jsr株式会社 | 接合体及びその製造方法 |
EP3251758A4 (en) * | 2015-01-29 | 2018-07-04 | Nisshin Steel Co., Ltd. | Method for producing coated metal strip |
WO2020202457A1 (ja) | 2019-04-02 | 2020-10-08 | 日本製鉄株式会社 | 金属-炭素繊維強化樹脂材料複合体 |
US11279066B2 (en) | 2017-02-27 | 2022-03-22 | Saint-Gobain Glass France | Encapsulation method |
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- 2013-04-26 CN CN201380030958.9A patent/CN104470717B/zh active Active
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- 2013-04-26 AU AU2013373649A patent/AU2013373649B2/en active Active
- 2013-04-26 MX MX2015008637A patent/MX344510B/es active IP Right Grant
- 2013-04-26 EP EP13872251.7A patent/EP2946921B1/en active Active
- 2013-04-26 KR KR1020147031177A patent/KR101488884B1/ko active IP Right Grant
- 2013-04-26 US US14/761,350 patent/US20150367605A1/en not_active Abandoned
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3251758A4 (en) * | 2015-01-29 | 2018-07-04 | Nisshin Steel Co., Ltd. | Method for producing coated metal strip |
WO2016152118A1 (ja) * | 2015-03-23 | 2016-09-29 | 日新製鋼株式会社 | 塗装Al含有金属素形材、複合体、およびそれらの製造方法 |
WO2017221583A1 (ja) * | 2016-06-24 | 2017-12-28 | Jsr株式会社 | 接合体及びその製造方法 |
EP3476563A4 (en) * | 2016-06-24 | 2020-02-19 | JSR Corporation | ASSEMBLED BODY AND MANUFACTURING METHOD THEREOF |
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Also Published As
Publication number | Publication date |
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CA2898584A1 (en) | 2014-07-24 |
US20150367605A1 (en) | 2015-12-24 |
JP5355803B1 (ja) | 2013-11-27 |
JP2014136407A (ja) | 2014-07-28 |
EP2946921A1 (en) | 2015-11-25 |
BR112015016396A2 (pt) | 2017-07-11 |
EA201591182A1 (ru) | 2016-01-29 |
AU2013373649B2 (en) | 2015-08-13 |
CN104470717A (zh) | 2015-03-25 |
BR112015016396B1 (pt) | 2021-07-13 |
CA2898584C (en) | 2016-01-19 |
KR101488884B1 (ko) | 2015-02-02 |
ES2652611T3 (es) | 2018-02-05 |
MX344510B (es) | 2016-12-19 |
EP2946921A4 (en) | 2016-11-09 |
PH12015501551A1 (en) | 2015-09-21 |
KR20140134722A (ko) | 2014-11-24 |
MY155105A (en) | 2015-09-07 |
CN104470717B (zh) | 2016-05-04 |
PL2946921T3 (pl) | 2018-02-28 |
PH12015501551B1 (en) | 2015-09-21 |
AU2013373649A1 (en) | 2015-07-23 |
EP2946921B1 (en) | 2017-09-20 |
NZ709519A (en) | 2016-09-30 |
MX2015008637A (es) | 2015-10-05 |
EA023554B1 (ru) | 2016-06-30 |
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