WO2011040266A1 - 樹脂積層板 - Google Patents
樹脂積層板 Download PDFInfo
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- WO2011040266A1 WO2011040266A1 PCT/JP2010/066170 JP2010066170W WO2011040266A1 WO 2011040266 A1 WO2011040266 A1 WO 2011040266A1 JP 2010066170 W JP2010066170 W JP 2010066170W WO 2011040266 A1 WO2011040266 A1 WO 2011040266A1
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- resin laminate
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
- E04C2/246—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 combinations of materials fully covered by E04C2/16 and E04C2/20
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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- 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
- B32B2605/00—Vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
Definitions
- the present invention relates to a resin laminate having a layer made of a thermoplastic resin or a thermosetting resin, and more particularly to a resin laminate capable of achieving both improvement in strength and weight reduction.
- Patent Document 1 discloses a vehicle resin outer plate in which a skin film is laminated on one side of a resin base material made of a polypropylene resin foam in which glass fibers as reinforcing fibers are dispersed. Yes.
- the surface layer of the polypropylene resin foam in which the glass fibers are dispersed is not foamed but is a skin layer, and the inner polypropylene resin foam portion is surrounded by the skin layer.
- the resin base material is composed of a polypropylene resin foam portion in which the glass fiber is dispersed, so that the weight can be reduced and sufficient rigidity is provided.
- the said skin film layer has the resin film layer bonded together to the resin base material, and the metal vapor deposition layer provided in the surface of the resin film layer. Since the surface has a metal texture due to the metal deposition layer, it is said that the appearance is enhanced.
- the resin outer plate for a vehicle described above has been reduced in weight and strength, it has not yet had sufficient rigidity. Therefore, further improvement in strength is required.
- the obtained resin outer plate for a vehicle has a problem that a dimensional variation due to a temperature change is relatively large.
- An object of the present invention is to provide a resin laminate that can be reduced in weight and further improved in strength in view of the current state of the prior art described above, and is less likely to deteriorate in appearance.
- the said 2nd layer is laminated
- the second layer is located on both sides, the directionality in use can be eliminated when the appearance beauty is enhanced by the second layer. It is also possible to increase the degree of design freedom when selecting the materials and thicknesses constituting the first layer and the second layer so that the apparent flexural modulus is 2.5 GPa or more and 8.5 GPa or less. Become.
- the thickness of the second layer is the plurality of second layers.
- the thickness of the first layer refers to the total thickness of the plurality of first layers.
- the ratio of the thickness of the first layer to the thickness of the second layer is in the range of 0.5 to 7.5, and the apparent bending elastic modulus of the resin laminate is 3.0 GPa or more. In this case, the strength of the laminate can be further increased. More preferably, the ratio between the thicknesses of the first layer and the second layer is in the range of 0.5 to 5, and the apparent flexural modulus is 3.5 GPa or more.
- the ratio of the thickness of the first layer to the thickness of the second layer is in the range of 0.5 to 5, and the linear expansion coefficient is 5 ⁇ . 10 ⁇ 5 / K or less. In this case, dimensional fluctuation due to temperature change can be suppressed.
- the thermoplastic resin is not particularly limited, but polyolefin or polyamide can be preferably used.
- Polyolefin or polyamide is a general-purpose resin and can be obtained at a low cost, so that the cost of the resin laminate can be reduced.
- the first layer has a foamed structure.
- the resin laminate can be further reduced in weight.
- the thermoplastic resin constituting the second layer may contain a graphite compound as a reinforcing filler.
- the graphite compound has a graphene sheet structure.
- the carbon compound having the graphene sheet structure include graphene, carbon nanotubes, graphite, and aggregates thereof.
- the graphite compound is preferably exfoliated graphite made of a graphene laminate, the number of laminated layers is 150 layers or less, and the aspect ratio is 20 or more. In this case, since the graphite compound is extremely small, there is no risk of impairing the appearance, and the mechanical strength can be further increased.
- thermoplastic resin constituting the second layer preferably does not include a filler for reinforcement. Accordingly, since the reinforcing filler does not appear on the surface of the second layer, the appearance can be further enhanced.
- the second layer is made of a film having a tensile elastic modulus of 7.0 GPa or more and 11 GPa or less. In this case, the mechanical strength of the resin laminate can be further increased.
- the linear expansion coefficient of the second layer is 2 ⁇ 10 ⁇ 5 / K or less. In this case, the dimensional stability when a temperature change is given can be further enhanced.
- the second layer is made of a stretched polyethylene terephthalate film.
- the mechanical strength and dimensional stability of the resin laminate can be further enhanced.
- one of the second layers laminated on both surfaces of the first layer is made of a stretched film made of a thermoplastic resin, and the other is a thermoplastic resin. It consists of a network made of In this case, the mechanical strength of the resin laminate can be further increased.
- a first flat yarn row composed of a plurality of first flat yarns extending in the stretching direction of the stretched film, and a direction intersecting with the extending direction of the first flat yarn.
- a second flat yarn array composed of a plurality of second flat yarns extending in the direction. More preferably, the first and second flat yarn rows are made of a stretched thermoplastic resin. More preferably, the stretched film and the first and second flat yarn rows are made of stretched polyethylene terephthalate.
- the resin laminate according to the present invention has a structure in which the second layer is laminated on both surfaces of the first layer made of the thermoplastic resin or the thermosetting resin.
- the ratio of the thickness to the layer thickness is in the range of 0.5 to 10
- the apparent bending elastic modulus obtained by JIS K7171 is 2.5 GPa or more, so that it has sufficient bending strength without increasing the thickness. Therefore, it becomes possible to achieve both improvement in mechanical strength and weight reduction of the resin laminate.
- FIG. 1 is a front sectional view of a resin laminate according to the first embodiment of the present invention.
- FIG. 2 is a front sectional view showing an example of a molded body made of the resin laminate of the first embodiment of the present invention.
- FIG. 3 is a front cross-sectional view showing a resin laminate according to the second embodiment of the present invention.
- FIG. 4 is a partially cutaway plan view showing an example of a mesh used as the second layer in the present invention.
- FIG. 5 is a partially cutaway plan view showing another example of the mesh used as the second layer in the present invention.
- the resin laminate according to the present invention has a first layer made of a thermoplastic resin or a thermosetting resin having a tensile elastic modulus of 0.8 to 2.0 GPa.
- a second layer to be described later is laminated on both surfaces of the first layer.
- the tensile elastic modulus of the first layer located in the center is in the range of 0.8 to 2.0 GPa, the overall tensile elastic modulus of the resin laminated plate can be sufficiently increased, and the machine of the resin laminated plate can be improved. Strength can be increased.
- the tensile elastic modulus is less than 0.8 GPa, the tensile elastic modulus of the entire resin laminate cannot be sufficiently increased.
- the preferable lower limit of the tensile elastic modulus is 1.0 GPa, and when it is 1.3 GPa or more, the mechanical strength of the resin laminate can be further increased. Resins having a tensile modulus exceeding 2.0 GPa are generally difficult to obtain except for those reinforced with glass fibers or the like.
- thermoplastic resin having a tensile modulus of 0.8 to 2.0 GPa is not particularly limited, and an appropriate thermoplastic resin that satisfies this tensile modulus range can be used.
- examples of such a thermoplastic resin include polyolefin, polyamide, polyester, polycarbonate, and the like.
- polyolefins or polyamides are used.
- the polyolefin is not particularly limited, and polypropylene, polyethylene and the like can be used.
- polyamide polyamide 66, polyamide 6, polyamide 11 or the like can be used.
- the thermoplastic resin constituting the first layer may contain components other than the thermoplastic resin, for example, additives such as plasticizers and inorganic fillers.
- plasticizers such as carnauba wax and low molecular weight polyolefin can be used.
- the inorganic filler include carbon black and talc.
- the thermoplastic resin constituting the first layer may contain a reinforcing filler such as glass fiber, but preferably does not contain a reinforcing filler. It is desirable. When the reinforcing filler is included in the first layer, when the reinforcing filler protrudes from the surface of the first layer and reaches the second layer, the appearance properties of the resin laminate may be impaired. .
- the first layer may have a foam structure or may not have a foam structure.
- the 1st layer which has a foam structure it can obtain by foam-molding the thermoplastic resin which comprises the said 1st layer with a well-known foam molding method.
- the specific gravity of the first layer having such a foam structure is not particularly limited, but is preferably in the range of 50 to 1000 kg / m 3 . If the specific gravity is within this range, further weight reduction can be achieved by levitation of the foam structure. In addition, the first layer becomes difficult to buckle, and it becomes even easier to make the apparent bending elastic modulus of the resin laminate satisfy the range of the present invention.
- the bubble diameter in a foam structure is not specifically limited, It is preferable that it is 500 micrometers or less. By setting the thickness to 500 ⁇ m or less, a locally weak portion is hardly generated in the foam structure, and the first layer is hardly buckled. Therefore, it becomes easy to configure the first layer so that the apparent bending elastic modulus of the resin laminate meets the scope of the present invention.
- the first layer may not have a foam structure.
- the strength of the first layer can be increased and the first layer is unlikely to buckle, the apparent bending elastic modulus of the resin laminate is configured to satisfy the scope of the present invention. Is easy.
- the second layer in the resin laminate according to the present invention is laminated on the first layer, and is made of a resin different from the thermoplastic resin constituting the first layer, and is a film, a woven fabric, or a non-woven fabric. And having a form selected from the group consisting of reticulate bodies.
- the resin constituting the second layer is not particularly limited as long as the resin is different from the thermoplastic resin constituting the first layer.
- the resin constituting the second layer has an apparent bending elastic modulus described later of the resin laminated plate of the present invention in which the second layer is laminated on both sides of the first layer and a specific range described later. It is necessary to be a resin that achieves this. That is, the thermoplastic resin constituting the first layer and the second layer are configured so that the first layer and the second layer jointly realize a specific apparent bending elastic modulus range. A combination of resins may be selected.
- the resin that can form the second layer examples include polyester, polyolefin, polyamide, and polyimide.
- a stretched polyethylene terephthalate film is preferably used. In this case, the orientation is enhanced by stretching, and therefore the mechanical strength is further increased. be able to.
- an appropriate plasticizer or inorganic filler may be contained within a range not impairing the object of the present invention.
- the second layer has a form selected from the group consisting of a film, a woven fabric, a non-woven fabric, and a net-like body. It is necessary that at least one surface of the outer surface of the resin laminate of the present invention is the second layer. Therefore, when the outer surface of the resin laminate is the second layer, the outer surface of the resin laminate becomes a film surface, a woven fabric surface, and a nonwoven fabric surface, and the appearance beauty of the resin laminate can be enhanced.
- a film, a cloth and a non-woven fabric having no opening are desirable because the appearance is further improved.
- thermoplastic resin constituting such a network an appropriate thermoplastic resin constituting the second layer can be used.
- the network has a plurality of first flat yarns composed of a plurality of first flat yarns extending in a stretching direction of the stretched film, and a plurality extending in a direction intersecting with the extending direction of the first flat yarns. It is desirable to have a structure in which a second flat yarn array composed of a second flat yarn of a book is laminated. In this case, since the extending direction of the plurality of first flat yarns intersects with the extending direction of the plurality of second flat yarns, the anisotropy of the mechanical strength is more reliably reduced. be able to. More desirably, the first and second flat yarn arrays are made of stretched thermoplastic resin, more preferably stretched polyethylene terephthalate. In that case, the anisotropy of the mechanical strength can be reduced more effectively.
- the second layer laminated on one side of the first layer is made of a stretched polyethylene terephthalate film, and the second layer laminated on the other side of the first layer is first, It has a structure in which a second flat yarn row is laminated, and the first and second flat yarn rows are made of drawn polyethylene terephthalate.
- the mechanical strength of the resin laminate can be further increased, and the anisotropy of the mechanical strength can be more effectively reduced.
- the tensile elastic modulus of the second layer is preferably 7.0 GPa or more and 11 GPa or less. If it is less than 7.0 GPa, the mechanical strength of the entire resin laminate may not be increased, and if it exceeds 11 GPa, the laminate may peel off, resulting in poor molding. Further, the linear expansion coefficient of the second layer is preferably 2 ⁇ 10 ⁇ 5 / K or less, and in this case, the dimensional stability of the resin laminate can be improved when a temperature change is given. .
- a resin laminate 1 according to the first embodiment shown in FIG. 1 is a laminate having a three-layer structure in which a second layer 3 is laminated on both surfaces of the first layer 2.
- the second layer may be laminated only on one side of the first layer, and in that case, a third layer made of another material may be further laminated outside the first layer.
- the resin laminated plate 11 of 2nd Embodiment shown in FIG. 3 the 2nd layer 12, the 1st layer 13, the 2nd layer 14, the 1st layer 15, and the 2nd in order from the top. Layers 16 are stacked in this order.
- the resin laminate of the present invention may be a laminate having a five-layer structure.
- the laminate is not limited to a laminate of three layers and five layers, and may be a laminate in which more first and second layers are laminated.
- one layer is made of a stretched film made of a thermoplastic resin, and the other is made of a network made of a thermoplastic resin.
- a stretched film made of a thermoplastic resin
- the other is made of a network made of a thermoplastic resin.
- the second flat yarn row 21B is laminated on the first flat yarn row 21A.
- the first flat yarn row 21A has a plurality of first flat yarns 21a.
- the plurality of first flat yarns 21a are arranged in parallel with each other at a predetermined pitch.
- the second flat yarn row 21B has a plurality of second flat yarns 21b arranged in parallel with each other at a predetermined pitch.
- first flat yarn 21a and the second flat yarn 21b intersect with each other in directions orthogonal to each other.
- the direction in which the flat yarn 21a extends and the direction in which the flat yarn 21b extend are different, and are particularly perpendicular to each other. Anisotropy can be effectively reduced.
- the extending direction of the first flat yarn 21a and the extending direction of the second flat yarn 21b are not orthogonal to each other, and the two may intersect in an oblique direction.
- the method of laminating and integrating the first flat yarn row 21A and the second flat yarn row 21B is not particularly limited, but the first flat yarn row 21A made of a thermoplastic resin and the first flat yarn row 21A made of a thermoplastic resin.
- a suitable method such as a method of fusing the two flat yarn rows 21B or a method of forming the first and second flat yarn rows 21A and 21B from thermoplastic resin and stacking them together before solidification. Can be used.
- the network is not limited to the one shown in FIGS. 4 and 5, and a network having an appropriate structure can be used as long as the mechanical strength anisotropy can be relaxed.
- the present invention is not limited to the stacked first and second flat yarn rows 21A and 21B, and a net formed by knitting a plurality of first flat yarns and second flat yarns may be used. good.
- the resin laminate according to the present invention, the first layer and the thickness t 1, the ratio t 1 / t 2 and the thickness t 2 of the second layer is located and the resin laminate in the range of 0.5 to 10
- the apparent bending elastic modulus obtained by the bending test of JIS K7171 is 2.5 GPa or more and 8.5 GPa or less.
- the total thickness of the plurality of first layers is defined as a thickness t 1 of the first layer.
- the second layer is provided with a plurality of thickness t 2 of the second layer, the total thickness of the plurality of second layers.
- the thickness ratio t 1 / t 2 is less than 0.5, the thickness t 1 of the first layer becomes too thin, and sufficient moldability and shapeability cannot be obtained. becomes too thin thickness of layer t 2, the mechanical strength of the resin laminate is lowered. Moreover, since the apparent bending elastic modulus is 2.5 GPa or more, the resin laminate according to the present invention has a sufficient mechanical strength and is suitable for applications requiring mechanical strength, such as a vehicle exterior plate. Can be used.
- the upper limit of the apparent bending elastic modulus is not particularly limited in terms of increasing mechanical strength, but the apparent bending elastic modulus of this type of resin laminate is usually not more than 8.5 GPa as long as an existing material is used. Therefore, it is 8.5 GPa or less.
- the thickness t 1 of the first layer is in the ratio t 1 / t 2 ranges from 0.5 to 7.5 and the thickness t 2 of the second layer, apparently bending elastic modulus of the resin laminate 3.0 GPa or more, in which case the mechanical strength of the resin laminate can be further increased, and more preferably the thickness ratio is in the range of 0.5 to 5 and the apparent flexural modulus is It is 3.0 GPa or more, whereby the mechanical strength can be further increased.
- the thickness ratio is in the range of 0.5 to 5, and the linear expansion coefficient is 5 ⁇ 10 ⁇ 5 / K or less. In this case, the dimensional stability when a temperature change is given can be improved.
- the resin laminate according to the present invention is not particularly limited as long as a laminated structure in which the second layer is laminated on the first layer can be obtained.
- a method of thermally fusing a film, woven fabric, or nonwoven fabric constituting the second layer to the resin layer constituting the first layer can be suitably used.
- a resin laminate may be obtained by co-extrusion of the first layer and the second layer.
- thermoplastic resin molded products, thermoplastic resin laminates, etc. contain fibrous reinforcing materials such as glass fibers and carbon fibers, and other reinforcing fillers such as calcium carbonate in order to increase mechanical strength. It is generally done. However, when the reinforcing filler is used, irregularities derived from the reinforcing filler may occur on the outer surface, and the appearance may be impaired. Therefore, in the resin laminate according to the present invention, it is preferable that the second layer located on the surface does not contain the reinforcing filler. More preferably, the first layer also does not contain a reinforcing filler.
- the ratio of the thickness t 2 of the thickness t 1 of the first layer and the second layer is in the above specific range, and an elastic bending apparent of the resin laminate Since the rate is 2.5 GPa or more and 8.5 GPa or less, the strength can be improved without impairing the appearance.
- the second layer may contain glass fiber, graphite compound, or the like as a reinforcing filler.
- the mechanical strength of the resin laminate can be further increased. Since it is difficult to cause unevenness on the outer surface, for example, a graphite compound having a graphene sheet structure is suitably used as the reinforcing filler contained in the second layer.
- Examples of the graphite compound having the graphene sheet structure include graphene, carbon nanotubes, graphite, and aggregates thereof.
- the graphite compound is preferably flaky graphite composed of a laminate of the graphene sheets. If the graphite compound is a sufficiently small flake, the outer surface of the second layer is more difficult to be uneven. Specifically, a flaky graphite compound having a laminate number of 150 or less and an aspect ratio of 20 or more is desirable. If the number of laminated layers exceeds 150, the outer surface of the second layer may be uneven. In addition, if the aspect ratio of the laminate is less than 20, irregularities may occur on the outer surface of the second layer.
- the content of the graphite compound in the second layer is preferably 1% by weight to 16% by weight, and more preferably 5% by weight to 40% by weight. If the content of the graphite compound is too small, the mechanical strength of the resin laminate may not be increased, and if the content of the graphite compound is too large, the laminate may peel off, resulting in poor molding. There is.
- Example 1 The second layer was thermally fused on both sides of the first layer to obtain a three-layered resin laminate.
- a polypropylene resin layer having a thickness of 1.0 mm (polypropylene manufactured by Prime Polymer Co., Ltd., product number: J-721GR, tensile elastic modulus: 1.2 GPa, linear expansion coefficient: 11 ⁇ 10 ⁇ 5 / K)
- a layer 2 0.2 mm super-stretched polyethylene terephthalate film (manufactured by Sekisui Chemical Co., Ltd., tensile elastic modulus: 9 GPa, linear expansion coefficient: 0.5 ⁇ 10 ⁇ 5 / K) was thermally fused at a temperature of 270 ° C.
- a resin laminate was obtained.
- Tensile elastic modulus of the first layer in the resin laminate showing a thickness t 1 of the first layer the ratio t 1 / t 2 and the thickness t 2 of the second layer in Table 1 below.
- required by the bending test of JISK7171 of the obtained resin laminated board are combined with following Table 1, and are shown.
- the bending elastic modulus of the resin laminate in the extending direction of the second layer and the bending elastic modulus in the direction perpendicular to the extending direction were obtained, and the average of these was taken as the bending elastic modulus.
- Table 1 shows the apparent bending elastic modulus, the bending elastic modulus in the stretching direction, the bending elastic modulus in the direction perpendicular to the stretching direction, the bending elastic modulus in the stretching direction / vertical bending elastic modulus, and the linear expansion coefficient. .
- Example 2 A resin laminate was obtained in the same manner as in Example 1 except that the thickness ratio between the first layer and the second layer was changed from 2.5 to 4. This resin laminate had an apparent flexural modulus of 4.1 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- Example 3 A resin laminate was obtained in the same manner as in Example 1 except that the thickness ratio between the first layer and the second layer was changed from 2.5 to 6. This resin laminate had an apparent flexural modulus of 3.6 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- Example 4 A resin laminate was prepared in the same manner as in Example 1 except that polypropylene (manufactured by Prime Polymer Co., Ltd., product number: J-2003GP, tensile elastic modulus: 1.8 GPa) was used as the resin constituting the first layer. Obtained.
- This resin laminate had an apparent flexural modulus of 4.6 GPa and a linear expansion coefficient of 2 ⁇ 10 ⁇ 5 / K.
- Example 5 A resin laminate was obtained in the same manner as in Example 4 except that the thickness ratio between the first layer and the second layer was changed from 2.5 to 4. The resulting resin laminate had an apparent flexural modulus of 4.4 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- Example 6 A resin laminate was obtained in the same manner as in Example 4 except that the thickness ratio between the first layer and the second layer was changed from 2.5 to 6. The resulting resin laminate had an apparent flexural modulus of 4 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- Example 7 Using the same first layer as in Example 1, heat was applied to the second layer made of the 0.2 mm super-stretched polyethylene terephthalate film used in Example 1 on one side of the first layer in the same manner as in Example 1. While fusing, the following reticulate was similarly heat-sealed at a temperature of 270 ° C. on the opposite surface to obtain a resin laminate.
- a mesh body in which the first and second flat yarn rows made of the ultra-stretched polyethylene terephthalate film used in Example 1 were laminated was prepared.
- the shapes of the first flat yarn and the second flat yarn were elongated strips, the length direction was the stretching direction, the width direction dimension was 3 mm, and the thickness was 0.2 mm.
- each pitch of the 1st flat yarn and the 2nd flat yarn was 6 mm.
- the resulting resin laminate had an apparent flexural modulus of 4.5 GPa and a linear expansion coefficient of 2 ⁇ 10 ⁇ 5 / K.
- Example 8 Two ultra-stretched polyethylene terephthalate films used in Example 1 were laid in the mold. Between these two ultra-stretched polyethylene terephthalate films, as a thermosetting resin, a main component (product number: X-2422AS) of a urethane resin for column type (manufactured by Nissin Resin Co., product number: ADAPT X-2422) and a curing agent (product number: X-2422B) was injected at a weight ratio of 100: 150 and heated at a temperature of 70 ° C. to form a resin laminate.
- a main component product number: X-2422AS
- a urethane resin for column type manufactured by Nissin Resin Co., product number: ADAPT X-2422
- a curing agent product number: X-2422B
- Example 8 tensile modulus of the first layer of the obtained resin laminate, the ratio t 1 / t 2 of the thickness t 1 of the first layer and the thickness t 2 of the second layer, the apparent flexural modulus
- the rates and linear expansion coefficients are shown in Table 1 below.
- Example 9 instead of using the two super-stretched polyethylene terephthalate films of Example 8, the network used in Example 7 was laid on one super-stretched polyethylene terephthalate film, and in the same manner as in Example 8 below. A resin laminate was molded.
- the resulting resin laminate had an apparent flexural modulus of 3.5 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- Example 10 By foam molding glass fiber reinforced polypropylene (manufactured by Prime Polymer Co., Ltd., trade name: Mostron L-4040P, tensile elastic modulus: 9.0 GPa, linear expansion coefficient: 5 ⁇ 10 ⁇ 5 / K, specific gravity 1200 kg / m 3 ) A foamed resin sheet having a thickness of 1.0 mm, a specific gravity of 400 kg / m 3 and a foaming ratio of 3 times was prepared. A resin laminate was obtained in the same manner as in Example 1 except that this foamed sheet was used as the first layer. The resulting resin laminate had an apparent flexural modulus of 5.7 GPa and a linear expansion coefficient of 2 ⁇ 10 ⁇ 5 / K.
- Example 11 As the second layer, instead of the super-stretched PET film used in Example 1, a flaky graphite compound comprising a laminate of graphene sheets (manufactured by XG-Science, product number: XGnP-5, number of layers: 180, aspect ratio) Ratio: 100) polypropylene resin (EA-9; manufactured by Nippon Polypro Co., Ltd., tensile elastic modulus: 1.6 GPa, linear expansion coefficient: 11 ⁇ 10 ⁇ 5 / K) A resin laminate was obtained in the same manner as in Example 1 except that the film was used. The resulting resin laminate had an apparent flexural modulus of 5.8 GPa and a linear expansion coefficient of 3 ⁇ 10 ⁇ 5 / K.
- EA-9 polypropylene resin
- Example 1 As the second layer, a film made of a polypropylene resin (product number: Mostron L-2040P manufactured by Prime Polymer Co., Ltd.) containing 20% by weight of glass fiber is used in place of the ultra-stretched PET film used in Example 1.
- a resin laminate was obtained in the same manner as in Example 1 except that. This resin laminate had an apparent flexural modulus of 2.3 GPa and a linear expansion coefficient of 9 ⁇ 10 ⁇ 5 / K.
- This resin plate had an apparent flexural modulus of 0.7 GPa and a linear expansion coefficient of 10 ⁇ 10 ⁇ 5 / K.
- Comparative Example 1 since the second layer contains glass fiber, irregularities derived from glass fiber were observed on the surface.
- Comparative Example 2 since the second layer did not exist, the surface of the resin plate had dents and irregularities in a considerable proportion. Therefore, the appearance beauty was inferior. On the other hand, in Examples 1 to 11, such irregularities were not seen. Therefore, in Examples 1 to 11, it can be seen that since the second layer exists in the outermost layer, the surface smoothness is excellent, and thus the appearance of the resin laminate can be enhanced.
- Example 7 and 9 the above unevenness was not seen on the surface opposite to the side where the mesh body was arranged. Accordingly, in the resin laminates obtained in Examples 7 and 9, the appearance beauty can be enhanced by using the surface opposite to the side on which the mesh is laminated as the side exposed to the outside. In addition, since the net-like body is provided, it is possible to reduce the stretching bending modulus / vertical bending modulus. That is, the anisotropy of mechanical strength can be relaxed.
- FIG. 2 is a cross-sectional view of the vehicle exterior board 1A obtained by bending the resin laminate 1 shown in FIG. Since the resin laminated board 1 has the structure which laminated
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Abstract
Description
本発明に係る樹脂積層板は、引っ張り弾性率が0.8~2.0GPaである熱可塑性樹脂または熱硬化性樹脂からなる第1の層を有する。第1の層の両面に後述の第2の層が積層されている。この構造において、中央に位置する第1の層の引っ張り弾性率が0.8~2.0GPaの範囲にあるため、樹脂積層板の全体の引っ張り弾性率が充分に高められ、樹脂積層板の機械的強度を高めることができる。引っ張り弾性率が0.8GPa未満である場合、樹脂積層板全体の引っ張り弾性率を充分に高めることができない。引っ張り弾性率の好ましい下限は1.0GPaであり、1.3GPa以上である場合には、樹脂積層板の機械的強度をより一層高めることができる。引っ張り弾性率が2.0GPaを超える樹脂は、ガラス繊維などにより補強されているものを除いて、一般的に入手困難である。
本発明に係る樹脂積層板における第2の層は、第1の層に積層されており、第1の層を構成している前記熱可塑性樹脂とは異なる樹脂からなり、フィルム、織布、不織布及び網状体からなる群から選択される形態を有する。第2の層を構成している樹脂は、第1の層を構成している前記熱可塑性樹脂とは異なる樹脂からなる限り、その樹脂は特に限定される訳ではない。もっとも、第2の層を構成している樹脂は、第1の層の両面に第2の層を積層してなる本発明の樹脂積層板の後述の見かけ曲げ弾性率が後述の特定の範囲となることを実現する樹脂であることが必要である。すなわち、第1の層と第2の層とが共同して特定の見かけ曲げ弾性率範囲を実現するように、第1の層を構成している熱可塑性樹脂と第2の層を構成している樹脂の組み合わせを選択すればよい。
図1に示す第1の実施形態の樹脂積層板1は、上記第1の層2の両面に第2の層3が積層されている、3層構造の積層体である。もっとも、本発明においては、樹脂積層板における積層構造において、第1の層に第2の層が積層されている限りこれに限定されるものではない。従って、第2の層は第1の層の片面にのみ積層されていてもよく、その場合、さらに第1の層の外側に他の材料からなる第3の層が積層されていてもよい。
本発明に係る樹脂積層板では、第1の層の厚みt1と、第2の層の厚みt2との比t1/t2が0.5~10の範囲にありかつ樹脂積層板のJIS K7171の曲げ試験により求められた見かけ曲げ弾性率が2.5GPa以上、8.5GPa以下である。ここで、第1の層が複数層設けられている場合には、複数の第1の層の厚みの合計を第1の層の厚みt1とする。同様に、樹脂積層板において、第2の層が複数設けられている場合上記第2の層の厚みt2は、複数の第2の層の厚みの合計とする。厚みの比t1/t2が0.5未満では、第1の層の厚みt1が薄くなりすぎ、充分な成形性や賦形性を得ることができず、10を超えると、第2の層t2の厚みが薄くなりすぎ、樹脂積層板の機械的強度が低くなる。また、上記見かけ曲げ弾性率が2.5GPa以上であるため、本発明に係る樹脂積層板は、充分な機械的強度を有し、機械的強度が求められる用途、例えば車両用外装板に好適に用いることができる。
本発明に係る樹脂積層板は、第1の層に第2の層を積層した積層構造を得ることができる限り特に限定されない。例えば、第1の層を構成する樹脂層に、第2の層を構成するフィルム、織布または不織布を熱融着する方法を好適に用いることができる。あるいは、第1の層と第2の層とを共押出しすることにより樹脂積層板を得てもよい。
一般に、熱可塑性樹脂成形品や、熱可塑性樹脂積層体等においては、機械的強度を高めるためにガラスファイバーやカーボンファイバーなどの繊維状補強材や、炭酸カルシウムなどの他の補強用充填材を含有させることが一般に行われている。しかしながら、補強用充填材を用いた場合、外表面に補強用充填材に由来する凹凸が生じ、外観美が損なわれることがある。従って、本発明に係る樹脂積層板では、表面に位置する第2の層が、上記補強用充填材を含まないことが好ましい。より好ましくは、第1の層も補強用充填材を含まないことが好ましい。本発明では、補強用充填材を用いずとも、第1の層の厚みt1と第2の層の厚みt2との比が上記特定の範囲にあり、かつ上記樹脂積層板の見かけ曲げ弾性率が2.5GPa以上、8.5GPa以下とされているため、外観性を損なうことなく、強度の向上が図られる。
以下、本発明の具体的な実施例及び比較例を挙げることにより、本発明の効果を明らかにする。
第1の層の両面に第2の層を熱融着し、3層構造の樹脂積層板を得た。具体的には、厚み1.0mmのポリプロピレン樹脂層(プライムポリマー社製ポリプロピレン、品番:J-721GR、引っ張り弾性率:1.2GPa、線膨張係数:11×10-5/K)の両面に第2の層として0.2mmの超延伸ポリエチレンテレフタレートフィルム(積水化学工業社製、引っ張り弾性率:9GPa、線膨張係数:0.5×10-5/K)を270℃の温度で熱融着し、樹脂積層板を得た。
第1の層と第2の層との厚みの比を2.5から4に変更したことを除いては、実施例1と同様にして樹脂積層板を得た。この樹脂積層板の見かけ曲げ弾性率は4.1GPaであり、線膨張係数は3×10-5/Kであった。
第1の層と第2の層との厚みの比を2.5から6に変更したことを除いては、実施例1と同様にして樹脂積層板を得た。この樹脂積層板の見かけ曲げ弾性率は3.6GPaであり、線膨張係数は3×10-5/Kであった。
第1の層を構成する樹脂をポリプロピレン(プライムポリマー社製、品番:J-2003GP、引っ張り弾性率:1.8GPa)を用いたことを除いては、実施例1と同様にして樹脂積層板を得た。この樹脂積層板の見かけ曲げ弾性率は4.6GPaであり、線膨張係数は2×10-5/Kであった。
第1の層と第2の層との厚みの比を2.5から4に変更したことを除いては、実施例4と同様にして樹脂積層板を得た。得られた樹脂積層板の見かけ曲げ弾性率は4.4GPaであり、線膨張係数は3×10-5/Kであった。
第1の層と第2の層との厚みの比を2.5から6に変更したことを除いては、実施例4と同様にして樹脂積層板を得た。得られた樹脂積層板の見かけ曲げ弾性率は4GPaであり、線膨張係数は3×10-5/Kであった。
実施例1と同じ第1の層を用い、該第1の層の片面に実施例1で用いた0.2mmの超延伸ポリエチレンテレフタレートフィルムからなる第2の層を実施例1と同様にして熱融着するとともに、反対側の面に以下の網状体を同様に270℃の温度で熱融着し、樹脂積層板を得た。
成形型内に、実施例1で用いた超延伸ポリエチレンテレフタレートフィルム2枚を敷設した。この2枚の超延伸ポリエチレンテレフタレートフィルム間に熱硬化性樹脂として柱型用ウレタン樹脂(日新レジン社製、品番:ADAPT X-2422)の主剤(品番:X-2422AS)と硬化剤(品番:X-2422B)とを重量比で100対150の割合で注入し、70℃の温度で加熱し、樹脂積層板を成形した。
実施例8の超延伸ポリエチレンテレフタレートフィルムを2枚用いたことに代えて、1枚の該超延伸ポリエチレンテレフタレートフィルム上に実施例7で用いた網状体を敷設し、以下実施例8と同様にして樹脂積層板を成形した。
ガラス繊維強化ポリプロピレン(プライムポリマー社製、商品名:モストロンL-4040P、引張弾性率:9.0GPa、線膨張係数:5×10-5/K、比重1200kg/m3)を発泡成形することにより得られた厚み1.0mm及び比重400kg/m3、発泡倍率3倍の発泡樹脂シートを用意した。この発泡シートを第1の層として用いたこと以外は実施例1と同様にして樹脂積層版を得た。得られた樹脂積層板の見かけの曲げ弾性率は5.7GPaであり、線膨張係数は2×10-5/Kであった。
第2の層として、実施例1に用いた超延伸PETフィルムに代えて、グラフェンシートの積層体からなる薄片状黒鉛化合物(XG-Science社製、品番;XGnP-5、積層数;180、アスペクト比;100)を全体の20重量%含むポリプロピレン系樹脂(EA-9;日本ポリプロ社製、引張弾性率:1.6GPa、線膨張係数:11×10-
5/K)からなるフィルムを用いたことを除いては、実施例1と同様にして樹脂積層板を得た。得られた樹脂積層板の見かけ曲げ弾性率は5.8GPaであり、線膨張係数は3×10-5/Kであった。
第2の層として、実施例1で用いた超延伸PETフィルムに代えて、ガラスファイバーを全体の20重量%含むポリプロピレン系樹脂(プライムポリマー社製、品番:モストロンL-2040P)からなるフィルムを用いたことを除いては、実施例1と同様にして樹脂積層板を得た。この樹脂積層板の見かけ曲げ弾性率は2.3GPaであり、線膨張係数は9×10-5/Kであった。
第2の層を用いなかったことを除いては、実施例8と同様にしてウレタン樹脂からなる樹脂板を得た。
上記各実施例及び比較例で得られた樹脂積層板の見かけ曲げ弾性率は下記の表1に示す通りであり、いずれも充分な曲げ剛性を有するため、機械的強度に優れていることが分かる。加えて、線膨張係数は実施例1~11では、3×10-5/K以下であり、温度変化による寸法安定性に優れていることも分かる。
1A…車両用外装板
2 …第1の層
3 …第2の層
11 …樹脂積層板
12 …第2の層
13 …第1の層
14 …第2の層
15 …第1の層
16 …第2の層
Claims (19)
- 熱可塑性樹脂または熱硬化性樹脂からなる層を積層構造中に有する樹脂積層板であって、
引っ張り弾性率が0.8~2.0GPaである熱可塑性樹脂または熱硬化性樹脂からなる第1の層と、
前記第1の層に積層されており、第1の層を構成している前記熱可塑性樹脂または熱硬化性樹脂とは異なる樹脂からなり、フィルム、織布、不織布及び網状体からなる群から選択された形態を有する第2の層とを備え、
前記第1の層の厚みと第2の層の厚みとの比が0.5~10の範囲にあり、かつ前記樹脂積層板のJIS K7171の曲げ試験により求められた見かけ曲げ弾性率が2.5GPa以上、8.5GPa以下である、樹脂積層板。 - 前記第1の層の両面に前記第2の層が積層されており、前記第2の層の厚みが両面の第2の層の厚みの合計である、請求項1に記載の樹脂積層板。
- 前記第1の層の厚みと第2の層の厚みとの比が0.5~7.5の範囲にあり、前記樹脂積層板の見かけ曲げ弾性率が3.0GPa以上である、請求項1または2に記載の樹脂積層板。
- 前記第1の層の例と前記第2の層の厚みとの比が0.5~5の範囲にあり、前記見かけ曲げ弾性率が3.5GPa以上である、請求項3に記載の樹脂積層板。
- 前記第1の層の例と前記第2の層の厚みとの比が0.5~5の範囲にあり、線膨張係数が5×10-5/K以下である、請求項1~4のいずれか1項に記載の樹脂積層板。
- 前記第1の層を構成している熱可塑性樹脂が、ポリオレフィンまたはポリアミドである、請求項1~5のいずれか1項に記載の樹脂積層板。
- 前記第1の層が発泡構造を有している、請求項1~6のいずれか1項に記載の樹脂積層板。
- 前記第2の層を構成している熱可塑性樹脂が、黒鉛化合物を含有している、請求項1~7のいずれか1項に記載の樹脂積層板。
- 前記黒鉛化合物がグラフェンシート構造を有する、請求項8に記載の樹脂積層板。
- 前記グラフェンシート構造を有する前記黒鉛化合物が、グラフェン、カーボンナノチューブ、グラファイト、及びそれらの集合体からなる、請求項8または請求項9に記載の樹脂積層板。
- 前記黒鉛化合物が、前記グラフェンシートの積層体からなる薄片状黒鉛であり、積層数が150層以下であり且つアスペクト比が20以上である、請求項8~10のいずれか1項に記載の樹脂積層板。
- 前記第2の層を構成している熱可塑性樹脂が、補強用充填材を含まない、請求項1~7のいずれか1項に記載の樹脂積層板。
- 前記第2の層が引っ張り弾性率7.0GPa以上、11GPa以下のフィルムからなる請求項1~12のいずれか1項に記載の樹脂積層板。
- 前記第2の層の線膨張係数が2×10-5/K以下である、請求項1~13のいずれか1項に記載の樹脂積層板。
- 前記第2の層が、延伸ポリエチレンテレフタレートフィルムからなる、請求項1~14のいずれか1項に記載の樹脂積層板。
- 前記第1の層の両面に積層された前記第2の層の一方が熱可塑性樹脂よりなる延伸フィルムからなり、他方が熱可塑性樹脂からなる網状体からなる、請求項2に記載の樹脂積層板。
- 前記網状体が、前記延伸フィルムの延伸方向に延びる複数本の第1のフラットヤーンからなる第1のフラットヤーン列と、前記第1のフラットヤーンの延びる方向と交差する方向に延びる複数本の第2のフラットヤーンからなる第2のフラットヤーン列とが積層されている熱可塑性樹脂網状体である、請求項16に記載の樹脂積層板。
- 前記第1,第2のフラットヤーン列が、延伸熱可塑性樹脂からなる、請求項17に記載の樹脂積層板。
- 前記延伸フィルム及び前記第1,第2のフラットヤーン列が、延伸ポリエチレンテレフタレートからなる、請求項18に記載の樹脂積層板。
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CN (1) | CN102548760A (ja) |
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WO (1) | WO2011040266A1 (ja) |
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JP2012144421A (ja) * | 2010-12-21 | 2012-08-02 | Meijo Univ | グラフェン配線構造 |
WO2013031883A1 (ja) * | 2011-08-31 | 2013-03-07 | 積水化学工業株式会社 | 樹脂多層成形体及びその製造方法 |
JP2013049237A (ja) * | 2011-08-31 | 2013-03-14 | Sekisui Chem Co Ltd | 多層構造体及び多層構造体の製造方法 |
JP5167427B1 (ja) * | 2011-08-31 | 2013-03-21 | 積水化学工業株式会社 | 樹脂多層成形体及びその製造方法 |
US20150337105A1 (en) * | 2012-12-03 | 2015-11-26 | Sekisui Chemical Co., Ltd. | Electromagnetic wave shielding material and layered body for electromagnetic wave shielding |
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CN102803392B (zh) * | 2010-03-25 | 2013-10-30 | 积水化学工业株式会社 | 树脂组合物、合成树脂片、合成树脂成形品及合成树脂叠层体 |
JP2013202920A (ja) * | 2012-03-28 | 2013-10-07 | Sekisui Chem Co Ltd | 多層フィルム及びその製造方法 |
JP2013202919A (ja) * | 2012-03-28 | 2013-10-07 | Sekisui Chem Co Ltd | 多層フィルム |
CA2877943A1 (en) * | 2012-06-29 | 2014-01-03 | Flexcon Company, Inc. | Protective covering for electronic devices having improved elasticity and impact resistance properties |
KR20150079497A (ko) * | 2012-10-31 | 2015-07-08 | 세키스이가가쿠 고교가부시키가이샤 | 수지 적층체의 제조 방법 및 제조 장치 |
AT514829A1 (de) * | 2013-09-30 | 2015-04-15 | Teufelberger Gmbh | Mit einem Verstärkungselement versehenes Objekt, sowie Verfahren zur Herstellung eines derartigen Objektes |
JP6313579B2 (ja) * | 2013-11-29 | 2018-04-18 | 積水化学工業株式会社 | 外板用樹脂積層板 |
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JP6574669B2 (ja) * | 2015-10-06 | 2019-09-11 | 積水化学工業株式会社 | 樹脂積層体 |
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- 2010-09-17 WO PCT/JP2010/066170 patent/WO2011040266A1/ja active Application Filing
- 2010-09-17 KR KR1020127005391A patent/KR20120081976A/ko not_active Application Discontinuation
- 2010-09-17 US US13/388,376 patent/US20120128951A1/en not_active Abandoned
- 2010-09-17 EP EP10820385.2A patent/EP2484518A4/en not_active Withdrawn
- 2010-09-17 CN CN2010800434212A patent/CN102548760A/zh active Pending
- 2010-09-28 TW TW099132866A patent/TW201127625A/zh unknown
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012144421A (ja) * | 2010-12-21 | 2012-08-02 | Meijo Univ | グラフェン配線構造 |
WO2013031883A1 (ja) * | 2011-08-31 | 2013-03-07 | 積水化学工業株式会社 | 樹脂多層成形体及びその製造方法 |
JP2013049237A (ja) * | 2011-08-31 | 2013-03-14 | Sekisui Chem Co Ltd | 多層構造体及び多層構造体の製造方法 |
JP5167427B1 (ja) * | 2011-08-31 | 2013-03-21 | 積水化学工業株式会社 | 樹脂多層成形体及びその製造方法 |
US20150337105A1 (en) * | 2012-12-03 | 2015-11-26 | Sekisui Chemical Co., Ltd. | Electromagnetic wave shielding material and layered body for electromagnetic wave shielding |
US10597508B2 (en) * | 2012-12-03 | 2020-03-24 | Sekisui Chemical Co., Ltd. | Electromagnetic wave shielding material and layered body for electromagnetic wave shielding |
Also Published As
Publication number | Publication date |
---|---|
EP2484518A4 (en) | 2014-04-09 |
KR20120081976A (ko) | 2012-07-20 |
CN102548760A (zh) | 2012-07-04 |
JP2011213090A (ja) | 2011-10-27 |
EP2484518A1 (en) | 2012-08-08 |
US20120128951A1 (en) | 2012-05-24 |
TW201127625A (en) | 2011-08-16 |
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