WO2011071121A1 - Composite material for producing natural fiber-containing plastic and method for producing same, and natural fiber-containing plastic and method for producing same - Google Patents
Composite material for producing natural fiber-containing plastic and method for producing same, and natural fiber-containing plastic and method for producing same Download PDFInfo
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- WO2011071121A1 WO2011071121A1 PCT/JP2010/072159 JP2010072159W WO2011071121A1 WO 2011071121 A1 WO2011071121 A1 WO 2011071121A1 JP 2010072159 W JP2010072159 W JP 2010072159W WO 2011071121 A1 WO2011071121 A1 WO 2011071121A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
- B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L99/00—Compositions of natural macromolecular compounds or of derivatives thereof not provided for in groups C08L89/00 - C08L97/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0029—Perfuming, odour masking or flavouring agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0056—Biocompatible, e.g. biopolymers or bioelastomers
Definitions
- the present invention relates to a composite material for producing natural fiber-containing plastics excellent in odor reducing effect in natural fiber-containing plastics (particularly injection-molded products and compression-molded products), a method for producing the same, and natural fiber-containing materials with reduced odors.
- the present invention relates to a plastic and a manufacturing method thereof.
- a composite material in which natural fibers and thermoplastic resin are mixed is obtained by molding the composite material by plastic molding (extrusion molding, injection molding, etc.) to obtain a molded body (hereinafter referred to as natural fiber-containing plastic).
- plastic molding extrusion molding, injection molding, etc.
- Use as an interior material is increasing (see Patent Document 1).
- Advantages of natural fiber-containing plastics include weight reduction, energy saving during production, recyclability, and cost reduction.
- Natural fiber odor is not caused by a single chemical, but natural fibers such as flax and cannabis have a typical hay odor composed of many ingredients.
- natural fibers such as flax and cannabis have a typical hay odor composed of many ingredients.
- a component of the resin and natural fiber reacts to generate a new odorous substance.
- some odorous substances produce odors even at very low concentrations, which can be detected sensuously but not by chemical analysis.
- Patent Document 3 As a method for reducing the odor in such natural fiber-containing plastic, for example, the method disclosed in Patent Document 3 is known.
- Patent Document 3 a mixture of a synthetic resin with at least one of a powdery material, a cottony material, and a strip made of natural fibers having at least one of a hydroxyl group, an aldehyde group, and a carboxyl group is molded. Therefore, before or during heating, by adding calcium oxide and / or calcium hydroxide to the above mixture, generation of malodor is prevented, and a natural fiber-containing plastic molded article that can be used for various applications is provided. It is disclosed.
- an object of the present invention is to reduce the odor by using a composite material for producing natural fiber-containing plastics excellent in the odor reducing effect in natural fiber-containing plastics (particularly injection-molded products and compression-molded products). Another object is to provide a natural fiber-containing plastic and a method for producing the same.
- the present invention is a method for producing a composite material using natural fibers and a thermoplastic resin, comprising a step of supporting plant-derived polyphenols on the natural fibers.
- a method for producing a composite material is provided.
- the present invention also provides a composite material including a thermoplastic resin and natural fibers carrying plant-derived polyphenols.
- the present invention also provides a natural fiber-containing plastic produced by injection molding or compression molding the composite material in order to achieve the above object.
- the present invention includes a step of producing a composite material using natural fibers and a thermoplastic resin, and a step of injection molding or compression molding the composite material,
- the step of producing a material provides a method for producing a natural fiber-containing plastic, wherein the natural fiber includes a step of supporting a plant-derived polyphenol on the natural fiber.
- the composite material for natural fiber containing plastics excellent in the odor reduction effect in natural fiber containing plastics especially injection molded products and compression molded products
- its manufacturing method and natural fibers with reduced odors
- a plastic containing the same and a method for producing the same can be provided.
- the method for producing a composite material according to an embodiment of the present invention is a method for producing a composite material using natural fibers and a thermoplastic resin, and includes a step of supporting plant-derived polyphenols on the natural fibers.
- the natural fiber used in the embodiment of the present invention is not particularly limited, but for example, toughness such as flax (flux), hemp (hemp), irritability, ramie, jute, kenaf (hibiscus), etc.
- toughness such as flax (flux), hemp (hemp), irritability, ramie, jute, kenaf (hibiscus), etc.
- hard fibers such as leather fiber, coir, and sisal hemp (orchid).
- flax (flux), ramie, and kenaf in terms of price, mechanical properties, and versatility.
- the natural fibers may be used alone or in combination of two or more.
- the resin used in the embodiment of the present invention is not particularly limited.
- a thermoplastic resin for injection molding, compression molding, and extrusion molding polyolefin (polypropylene, polyethylene, etc.) , ABS (acrylonitrile / butadiene / styrene) resin, PEEK (polyether / ether / ketone) resin, polyester resin ⁇ (aliphatic polyester resin such as polylactic acid and polycaprolactone), (aromatic polyethylene resin such as polyethylene terephthalate) ⁇ , Polystyrene, polyacrylic resin (methacrylate, acrylate, etc.), polyamide resin, polycarbonate resin, polyacetal resin and the like.
- thermosetting resins for compression molding include epoxy resins, urea resins, melamine resins, phenol resins, polyester resins, and polyurethane resins. Among these, it is preferable to use an epoxy resin or a urea resin in terms of easy handling.
- the said thermoplastic resin may be used by 1 type, and may be used by 2 or more types.
- Plant-derived polyphenols The plant-derived polyphenol used in the embodiment of the present invention is not particularly limited, but is a multimer having a molecular weight of 440 or more in terms of excellent heat resistance during molding and less fogging and bleedout (2 Polyphenols which are monomer or higher) or monomer having a molecular weight of 290 or higher.
- Preferred plants include grapes, bullberries, bilberries, blackberries, eggplants, black beans, apples, strawberries, cocoa, tomatoes, and green tea.
- grapes, bullberries, bilberries, blackberries, eggplants, black beans, and green tea because they are cultivated in abundance and are inexpensive and easily available. It is most preferable because of its excellent effect.
- the main component of the grape-derived polyphenol is proanthocyanidin, and the main component of the green tea-derived polyphenol is catechin.
- the impurity molecular weight less than 290
- the impurity is less than 30% by mass in terms of improving heat resistance during molding and reducing fogging and bleedout, More preferably, it is less than 20% by mass.
- the step of supporting the polyphenol is not particularly limited, for example, by immersing the composite material in a solution in which the polyphenol is dissolved, or by spraying or brushing the solution on the composite material. It can be carried out. Among them, the method of immersing the composite material in a solution in which polyphenol is dissolved is preferable in that it can be evenly supported.
- the solution in which polyphenol is dissolved is used as an aqueous solution containing 0.01 to 10% by mass of polyphenol, and evenly supports polyphenol. It is preferable in that it can be performed. A 1 to 5% by mass polyphenol-containing aqueous solution is more preferable, and a 2 to 4% by mass polyphenol-containing aqueous solution is still more preferable.
- a polyphenol-containing solution in which the solvent is 99.9-50% by mass of water and 0.1-50% by mass of ethanol is preferable, and a polyphenol-containing solution in which the solvent is 95-70% by mass of water and 5-30% by mass of ethanol is more preferable.
- the immersion time is appropriately adjusted depending on the concentration and the solvent. For example, when 100% by mass of water is used, it is preferably 1 minute to 5 minutes, and more preferably 3 minutes or more. When 80% by mass of water and 20% by mass of ethanol are used, 10 seconds to 3 minutes are preferable, and 30 seconds or more are more preferable.
- the method for producing a composite material is characterized in that it has a step of supporting the above polyphenol, and the other steps are not particularly limited, and known methods described in Patent Document 1, Patent Document 2, etc.
- the method can be adopted.
- the step of supporting the polyphenol is preferably carried out after the composite material is produced by a known method, but it may be before production by the known method or during production.
- the composite material is preferably produced using 10 to 80% by mass of the above-mentioned natural fiber and 90 to 20% by mass of the above-mentioned thermoplastic resin. More preferably, the natural fiber is 20 to 50% by mass and the thermoplastic resin is 80 to 50% by mass. By producing in this range, the effect of reducing the use ratio of the synthetic resin derived from petroleum, the effect of reducing the weight of the composite material, and suppressing the generation of carbon dioxide can be obtained.
- the composite material is formed into pellet particles by a known method described in Patent Document 1, Patent Document 2, etc., and then subjected to the above-mentioned dipping step is excellent in workability (handling), and polyphenols are evenly distributed. It is preferable in that it can be supported.
- the composite material is formed into a mat shape by a known method described in Patent Document 1 and the like, and then subjected to the above-described dipping step is excellent in workability (handling), and can carry polyphenol evenly. preferable.
- the composite material is made into a composite material after natural fibers are matted and subjected to the above-mentioned dipping step.
- a composite material containing a thermoplastic resin and natural fibers carrying a plant-derived polyphenol can be obtained.
- the composite material can be suitably used for producing a natural fiber-containing plastic described below.
- the method for producing a natural fiber-containing plastic according to an embodiment of the present invention includes a step of plastic molding (particularly injection molding or compression molding) the composite material according to the embodiment of the present invention.
- plastic molding particularly injection molding or compression molding
- General plastic molding techniques can be applied to the present invention. Examples of techniques other than injection molding and compression molding include extrusion molding, blow molding, and hand lay-up.
- a method for producing a natural fiber-containing plastic includes a step of producing a composite material using natural fibers and a thermoplastic resin, and injection molding the composite material.
- the step of producing the composite material includes a step of supporting plant-derived polyphenol on the natural fiber.
- the injection molding method is not particularly limited, and can be molded by a known method.
- the compression molding method is not particularly limited, and can be molded by a known method.
- mat-shaped composite materials use one or more mats in which thermoplastic resin and natural fibers are mixed, or mats in which a plurality of sheets made of natural fibers and sheets made of thermoplastic resin are alternately stacked. Can do.
- a natural fiber-containing plastic with reduced odor can be provided.
- a natural fiber-containing plastic having a reduced amount of fogging substance can be provided.
- the composite material for manufacturing these can be provided.
- a specimen was manufactured by the following method by injection molding and compression molding.
- Injection Molding Injection molding is a method in which a plastic raw material is heated to a melting temperature with an injection molding machine and plasticized, and then pressed into a mold and cooled and solidified to obtain a molded product.
- pellet fibers long fiber pellets
- NAFARU plant manufactured by Svoboda Umformtechnik
- grape polyphenol powder (trade name: Grabuinol-SL, manufactured by Kikkoman Corporation) and green tea polyphenol powder (trade name: Polyphenon 70A, manufactured by Mitsui Norin Co., Ltd.) were used and dissolved in distilled water. Mass%, 3 mass%, and 5 mass% aqueous solutions were prepared. The pellet particles produced in each concentration of grape polyphenol aqueous solution or green tea polyphenol aqueous solution were soaked and dried in a constant temperature bath at 80 ° C. for 6 hours to obtain a polyphenol-supported sample.
- the produced polyphenol-supported sample was injection molded with an injection molding machine (product name: Allrounder Centrex Model 520C-2000-675, manufactured by Arburg) to obtain an injection molded product having a dumbbell specimen shape. Molding was performed by changing the heating temperature to 180 ° C and 220 ° C.
- the grape polyphenol used contained about 85% by weight proanthocyanidins and about 15% by weight impurities.
- the green tea polyphenol used contained about 45% by mass of epigallocatechin gallate, about 20% by mass of epigallocatechin, about 10% by mass of epicatechin gallate, about 9% by mass of epicatechin, and 16% by mass of impurities. .
- the flax fibers and polypropylene film are cut into 20 cm x 30 cm, and stacked alternately to form 7 layers (flax 3 layers, PP 4 layers; the proportion of flax fibers in the mixed material is 50% by mass), and a compression molding machine (product name: polystat 300S, manufactured by Schwabenthan).
- the molding conditions were heating and pressurizing at a heating temperature of 190 ° C. and a pressure of about 750 N / cm 2 for 2 minutes.
- VDA270 Odor test Evaluation of odor was performed by the following method. A specimen of 50 g (20 cm ⁇ 30 cm) was sealed in a 1 L glass bottle, and kept warm at 80 ⁇ 2 ° C. for 2 hours. Immediately after taking out this, the odor was evaluated in the following 6 grades. Specifically, four panelists evaluated each sample in the following six stages, and the average value was used as the result of the odor test.
- Fogging test reproduces and evaluates the fogging properties of materials. Fogging is a process in which the additives contained in automotive interior materials volatilize in the car at high temperatures and are cooled on the inside of the window glass. It is a phenomenon that condenses, cloudes white and obstructs visibility.
- a fogging test for measuring a chemical substance generated from a molded product was performed in accordance with the standard of DIN75201-A. Specifically, 10 g of a specimen was put in a beaker having a diameter of 80 mm, the beaker was covered with a metal plate wrapped with aluminum foil, and held at 100 ° C. for 16 hours. The metal plate is always cooled. The total mass of the substance adhering to the surface of the aluminum foil having a diameter of 80 mm was measured.
- FIG. 1 shows that in any of Examples 1A to 3A and Examples 1B to 3B, the odor could be reduced as compared with Comparative Example 1. Moreover, it turns out that the process by the grape polyphenol aqueous solution is more excellent in the malodor reduction effect from an injection molding than the green tea polyphenol aqueous solution. In particular, an injection molded product treated with 3% by mass and 5% by mass of grape polyphenol aqueous solution had an evaluation of 2.5 and was excellent in odor reduction effect.
- FIG. 2 shows that the amount of fogging substance could be reduced in any of Examples 4A to 6A and Examples 4B to 6B as compared with Comparative Example 2. Moreover, it turns out that the process by the grape polyphenol aqueous solution is more excellent in the reduction effect of the fogging substance amount from an injection molding than the green tea polyphenol aqueous solution.
- an injection molded product treated with a 5 mass% grape polyphenol aqueous solution was 0.33 mg, which is less than half that of Comparative Example 2 (0.88 mg), and the effect of reducing the amount of fogging substance was extremely excellent.
- Injection molded products (Examples 7A and 8A) manufactured by immersing in a 5% by weight grape polyphenol aqueous solution by the above-described manufacturing method (injection molding temperatures 180 ° C. and 220 ° C.) and immersed in a 5% by weight green tea polyphenol aqueous solution.
- the odor test was carried out by the above-described method for the injection molded products manufactured in Examples (Examples 7B and 8B) and the injection molded products manufactured without being immersed in the polyphenol aqueous solution (Comparative Examples 3 and 4). The results are shown in FIG.
- FIG. 3 shows that in any of Examples 7A and 8A and Examples 7B and 8B, the odor could be reduced as compared with Comparative Examples 3 and 4. It can also be seen that at both the injection molding temperatures of 180 ° C. and 220 ° C., the treatment with the grape polyphenol aqueous solution is superior to the green tea polyphenol aqueous solution in reducing the malodor from the injection molded product.
- FIG. 4 shows that the amount of fogging substance could be reduced in any of Examples 9A, 10A and Example 9B other than Reference Example 10B as compared with Comparative Examples 5 and 6. Moreover, it turns out that the process by the grape polyphenol aqueous solution is more excellent in the reduction effect of the fogging substance amount from an injection molding than the green tea polyphenol aqueous solution. In particular, in an injection molded product treated with a 5 mass% grape polyphenol aqueous solution, not only when the injection molding temperature is 180 ° C., but also at 220 ° C., it is 0% less than Comparative Example 6 (1.47 mg). The amount of fogging substance amount was extremely excellent.
- the evaluation was 3.0 to 3.5.
- the compression molded products treated with 1% by mass, 3% by mass and 5% by mass of grape polyphenol aqueous solution were evaluated as 2.5 to 3.0. From this, it can be seen that the treatment with the grape polyphenol aqueous solution is superior to the malodor reduction effect from the compression molded product than the green tea polyphenol aqueous solution. Moreover, it turned out that the malodor reduction effect is higher in the injection molded product than in the compression molded product.
- the injection-molded product of the example does not deteriorate the mechanical properties other than the tensile strength, or does not deteriorate so much (the reduction rate is within about 10%), compared with the injection-molded product of the comparative example.
- the tensile strength in the case of the grape polyphenol aqueous solution, the strength reduction rate was suppressed to within about 13%.
- a green tea polyphenol aqueous solution is used and it is desired to emphasize the tensile strength, it is desirable to use it at a concentration of 2% by mass or less.
- the compression molded product of the example does not deteriorate or does not deteriorate mechanically at a concentration of 3% by mass or less as compared with the compression molded product of the comparative example (the reduction rate is within 10%). I understand). Therefore, when it is desired to place importance on strength, it is found that the concentration is preferably 4% by mass or less, and more preferably 3% by mass or less.
Abstract
Description
本発明の実施の形態に係る複合材料の製造方法は、天然繊維と熱可塑性樹脂とを用いた複合材料の製造方法であって、前記天然繊維に植物由来のポリフェノールを担持させる工程を有することを特徴とする。 [Production method of composite material for producing natural fiber-containing plastics]
The method for producing a composite material according to an embodiment of the present invention is a method for producing a composite material using natural fibers and a thermoplastic resin, and includes a step of supporting plant-derived polyphenols on the natural fibers. Features.
本発明の実施の形態において使用される天然繊維としては、特に限定されるものではないが、例えば、亜麻(フラックス)、大麻(ヘンプ)、いらくさ、ラミー、ジュート、ケナフ(ハイビスカス)などの靭皮繊維、コイア、シサル麻(ラン)などの硬質繊維に分類されるものが挙げられる。中でも、亜麻(フラックス)、ラミー、ケナフを用いることが、価格と機械特性、汎用性の点で好ましい。
上記天然繊維は、1種で用いてもよく、2種以上で用いてもよい。 (Natural fiber)
The natural fiber used in the embodiment of the present invention is not particularly limited, but for example, toughness such as flax (flux), hemp (hemp), irritability, ramie, jute, kenaf (hibiscus), etc. Examples include those classified into hard fibers such as leather fiber, coir, and sisal hemp (orchid). Among these, it is preferable to use flax (flux), ramie, and kenaf in terms of price, mechanical properties, and versatility.
The natural fibers may be used alone or in combination of two or more.
本発明の実施の形態において使用される樹脂としては、特に限定されるものではないが、例えば、射出成形用、圧縮成形用、及び押出成形用の熱可塑性樹脂として、ポリオレフィン(ポリプロピレン、ポリエチレン等)、ABS(アクリロニトリル・ブタジエン・スチレン)樹脂、PEEK(ポリエーテル・エーテル・ケトン)樹脂、ポリエステル樹脂{(ポリ乳酸、ポリカプロラクトン等の脂肪族ポリエステル樹脂)、(ポリエチレンテレフタレート等の芳香族ポリエチレン樹脂)}、ポリスチレン、ポリアクリル樹脂(メタアクリレート、アクリレート等)、ポリアミド樹脂、ポリカーボネート樹脂、ポリアセタール樹脂等が挙げられる。中でも、射出成形用として、ポリプロピレン、ABS樹脂を用いることが、取扱いが容易である等の点で好ましい。その他、圧縮成形用の熱硬化性樹脂として、エポキシ樹脂、ユリア樹脂、メラミン樹脂、フェノール樹脂、ポリエステル樹脂、ポリウレタン樹脂等が挙げられる。中でも、エポキシ樹脂、ユリア樹脂を用いることが、取扱いが容易である等の点で好ましい。
上記熱可塑性樹脂は、1種で用いてもよく、2種以上で用いてもよい。 (Base material resin)
The resin used in the embodiment of the present invention is not particularly limited. For example, as a thermoplastic resin for injection molding, compression molding, and extrusion molding, polyolefin (polypropylene, polyethylene, etc.) , ABS (acrylonitrile / butadiene / styrene) resin, PEEK (polyether / ether / ketone) resin, polyester resin {(aliphatic polyester resin such as polylactic acid and polycaprolactone), (aromatic polyethylene resin such as polyethylene terephthalate)} , Polystyrene, polyacrylic resin (methacrylate, acrylate, etc.), polyamide resin, polycarbonate resin, polyacetal resin and the like. Among them, it is preferable to use polypropylene or ABS resin for injection molding because it is easy to handle. In addition, examples of thermosetting resins for compression molding include epoxy resins, urea resins, melamine resins, phenol resins, polyester resins, and polyurethane resins. Among these, it is preferable to use an epoxy resin or a urea resin in terms of easy handling.
The said thermoplastic resin may be used by 1 type, and may be used by 2 or more types.
本発明の実施の形態において使用される植物由来のポリフェノールとしては、特に限定されるものではないが、成形時の耐熱性に優れ、フォギングとブリードアウトが少ない点で分子量440以上の多量体(2量体以上)又は分子量290以上の1量体であるポリフェノールが好ましい。 (Plant-derived polyphenols)
The plant-derived polyphenol used in the embodiment of the present invention is not particularly limited, but is a multimer having a molecular weight of 440 or more in terms of excellent heat resistance during molding and less fogging and bleedout (2 Polyphenols which are monomer or higher) or monomer having a molecular weight of 290 or higher.
ポリフェノールを担持させる工程は、その方法が特に限定されるものではなく、例えば、ポリフェノールを溶解させた溶液に複合材料を浸漬する方法や、同溶液を複合材料に噴霧又ははけ塗りする方法等により行うことができる。中でも、ポリフェノールを溶解させた溶液に複合材料を浸漬する方法が、均等に担持できる点で好ましい。 (Process for supporting polyphenol)
The step of supporting the polyphenol is not particularly limited, for example, by immersing the composite material in a solution in which the polyphenol is dissolved, or by spraying or brushing the solution on the composite material. It can be carried out. Among them, the method of immersing the composite material in a solution in which polyphenol is dissolved is preferable in that it can be evenly supported.
複合材料の製造方法は、上記のポリフェノールを担持させる工程を有することに特徴を有するものであり、その他の工程は特に限定されるものではなく、特許文献1や特許文献2等に記載の公知の方法を採用することができる。ポリフェノールを担持させる工程は、公知の方法により複合材料を製造した後に行うことが好ましいが、公知の方法による製造前であっても製造途中であってもよい。 (Production method of composite material)
The method for producing a composite material is characterized in that it has a step of supporting the above polyphenol, and the other steps are not particularly limited, and known methods described in
本発明の実施の形態に係る天然繊維含有プラスチックの製造方法は、本発明の実施の形態に係る複合材料をプラスチック成形(特に射出成形又は圧縮成形)する工程を有することを特徴とする。本発明にはプラスチック成形手法全般が適用でき、射出成形及び圧縮成形以外の手法としては、押出成形、ブロー成形、ハンドレイアップなどを挙げることができる。 [Production method of natural fiber-containing plastic]
The method for producing a natural fiber-containing plastic according to an embodiment of the present invention includes a step of plastic molding (particularly injection molding or compression molding) the composite material according to the embodiment of the present invention. General plastic molding techniques can be applied to the present invention. Examples of techniques other than injection molding and compression molding include extrusion molding, blow molding, and hand lay-up.
本発明の実施の形態によれば、臭いの低減された天然繊維含有プラスチックを提供することできる。また、フォギング物質量が低減された天然繊維含有プラスチックを提供することできる。また、これらを製造するための複合材料を提供することできる。 [Effect of the embodiment of the present invention]
According to the embodiment of the present invention, a natural fiber-containing plastic with reduced odor can be provided. In addition, a natural fiber-containing plastic having a reduced amount of fogging substance can be provided. Moreover, the composite material for manufacturing these can be provided.
供試体を射出成形及び圧縮成形により以下に示す方法にて製造した。 [Manufacture of specimens]
A specimen was manufactured by the following method by injection molding and compression molding.
射出成形とは、プラスチック原料を射出成形機で溶融温度に加熱して可塑化した後、金型内に圧入、冷却固化させて成形品を得る方法である。
特許文献2に記載の方法に従って、ポリプロピレン繊維70質量%と亜麻繊維30質量%を混合した複合繊維を用いて、機織機(製品名:NAFARUプラント、Svoboda Umformtechnik製)によりペレット粒子(長繊維ペレット)を製造した。
一方で、ブドウポリフェノール粉末(商品名:グラブィノール-SL、キッコーマン株式会社製)及び緑茶ポリフェノール粉末(商品名:ポリフェノン70A、三井農林株式会社製)を使用し、それぞれを蒸留水に溶解させて、1質量%、3質量%、5質量%の水溶液を作製した。
各濃度のブドウポリフェノール水溶液又は緑茶ポリフェノール水溶液に製造した上記ペレット粒子を浸し、80℃の恒温槽中で6時間乾燥させてポリフェノール担持試料とした。
作製したポリフェノール担持試料を射出成形機(製品名:Allrounder Centrex Model 520C-2000-675、Arburg製)で射出成形し、ダンベル試験片形状を有する射出成形品を得た。成形は、加熱温度180℃及び220℃と条件を変えて行った。
使用したブドウポリフェノールは、プロアントシアニジン約85質量%と不純物約15質量%を含有していた。
また、使用した緑茶ポリフェノールは、エピガロカテキンガレート約45質量%、エピガロカテキン約20質量%、エピカテキンガリレート約10質量%、エピカテキン約9質量%、不純物16質量%を含有していた。 1. Injection Molding Injection molding is a method in which a plastic raw material is heated to a melting temperature with an injection molding machine and plasticized, and then pressed into a mold and cooled and solidified to obtain a molded product.
According to the method described in
On the other hand, grape polyphenol powder (trade name: Grabuinol-SL, manufactured by Kikkoman Corporation) and green tea polyphenol powder (trade name: Polyphenon 70A, manufactured by Mitsui Norin Co., Ltd.) were used and dissolved in distilled water. Mass%, 3 mass%, and 5 mass% aqueous solutions were prepared.
The pellet particles produced in each concentration of grape polyphenol aqueous solution or green tea polyphenol aqueous solution were soaked and dried in a constant temperature bath at 80 ° C. for 6 hours to obtain a polyphenol-supported sample.
The produced polyphenol-supported sample was injection molded with an injection molding machine (product name: Allrounder Centrex Model 520C-2000-675, manufactured by Arburg) to obtain an injection molded product having a dumbbell specimen shape. Molding was performed by changing the heating temperature to 180 ° C and 220 ° C.
The grape polyphenol used contained about 85% by weight proanthocyanidins and about 15% by weight impurities.
The green tea polyphenol used contained about 45% by mass of epigallocatechin gallate, about 20% by mass of epigallocatechin, about 10% by mass of epicatechin gallate, about 9% by mass of epicatechin, and 16% by mass of impurities. .
圧縮成形とは、上型と下型の間の空間にプラスチック原料を入れ、金型自体を加熱し、原料が溶融状態になった後、加圧して、原料を空間の細部までいきわたらせ、冷却固化する方法である。
ブドウポリフェノール粉末(商品名:グラヴィノール-SL、キッコーマン株式会社製)及び緑茶ポリフェノール粉末(商品名:ポリフェノン70A、三井農林株式会社製)を使用し、それぞれを蒸留水に溶解させて、1質量%、3質量%、5質量%の水溶液を作製した。
各濃度のブドウポリフェノール水溶液又は緑茶ポリフェノール水溶液に、シート状の亜麻繊維を浸し、その後、加圧ローラにて100kPaの圧力を加えながら、1m/秒の速度で通過させ脱液後、さらに、100℃で1時間、乾燥させて亜麻繊維へポリフェノールを担持させた。
この亜麻繊維とポリプロピレンフィルムを20cm×30cmに切りそろえ、交互に積み重ねて7層(亜麻3層、PP4層;混合材料のうち亜麻繊維の割合は50質量%)とし、圧縮成形機(製品名:polystat 300S、Schwabenthan製)で圧縮成形した。成形条件は、加熱温度190℃、圧力約750N/cm2で2分間、加熱加圧し、ヒーターを止め、加圧したまま、その後10分間、自然冷却し、材料を硬化させた。 2. Compressed molded product In compression molding, a plastic raw material is placed in the space between the upper mold and the lower mold, and the mold itself is heated. It is a method of spreading and cooling and solidifying.
Grape polyphenol powder (trade name: Gravinol-SL, manufactured by Kikkoman Corporation) and green tea polyphenol powder (trade name: Polyphenon 70A, manufactured by Mitsui Norin Co., Ltd.) were used, and each was dissolved in distilled water to give 1% by mass. 3 mass% and 5 mass% aqueous solution was produced.
After immersing the sheet flax fibers in each concentration of grape polyphenol aqueous solution or green tea polyphenol aqueous solution, applying pressure of 100 kPa with a pressure roller and letting it pass at a speed of 1 m / sec. And dried for 1 hour to load polyphenols onto flax fibers.
The flax fibers and polypropylene film are cut into 20 cm x 30 cm, and stacked alternately to form 7 layers (
製造した供試体(射出成形品及び圧縮成形品)について、以下に示す方法により、官能試験として臭気試験及びフォギング(Fogging)試験をドイツの下記規格に基づき行った。
ドイツ自動車技術協会規格(Verband der Automobilindustrie; VDA)
ドイツ工業品基準規格(Deutsche Industries Normen; DIN) [Evaluation of specimen]
The manufactured specimens (injection molded products and compression molded products) were subjected to odor tests and fogging tests as sensory tests based on the following German standards by the following methods.
German Automobile Technology Association Standard (Verband der Automobilindustrie; VDA)
German Industrial Standards (Deutsche Industries Normen; DIN)
臭気の評価(VDA270)を以下の方法により行った。
1Lのガラス瓶中に50g(20cm×30cm)の供試体を封入し、80±2℃、2時間の条件下で保温した。これを取り出して直ぐにその臭気を下記の6段階で評価した。具体的には、4人のパネラーがそれぞれの試料を下記の6段階で評価し、その平均値を臭気試験の結果とした。
<臭気評価基準(VDA270)>
1:知覚できない(無臭)
2:知覚できるが不快ではない
3:はっきりと知覚できるが不快ではない
4:不快である
5:とても不快である
6:我慢できない 1. Odor test Evaluation of odor (VDA270) was performed by the following method.
A specimen of 50 g (20 cm × 30 cm) was sealed in a 1 L glass bottle, and kept warm at 80 ± 2 ° C. for 2 hours. Immediately after taking out this, the odor was evaluated in the following 6 grades. Specifically, four panelists evaluated each sample in the following six stages, and the average value was used as the result of the odor test.
<Odor Evaluation Criteria (VDA270)>
1: Not perceptible (odorless)
2: Perceptible but not uncomfortable 3: Clearly perceptible but not uncomfortable 4: Uncomfortable 5: Very uncomfortable 6: Unbearable
フォギング試験は、材料のフォギング性を再現・評価するものであり、フォギングとは、自動車内装材に含まれる添加物が、高温になった車内で揮発して外気で冷えた窓ガラス内面に凝縮し、白く曇らせて視界を妨げる現象をという。成形品から発生する化学物質を測定するフォギング試験をDIN75201-Aの規格に従って行った。
具体的には、直径80mmのビーカの中に10gの供試体を入れ、アルミニウム箔で包まれた金属プレートでビーカに蓋をして、100℃で16時間保持した。なお、その金属プレートは常に冷却されている。直径80mmのアルミニウム箔の表面に付着した物質の総質量を測定した。 2. Fogging test The fogging test reproduces and evaluates the fogging properties of materials. Fogging is a process in which the additives contained in automotive interior materials volatilize in the car at high temperatures and are cooled on the inside of the window glass. It is a phenomenon that condenses, cloudes white and obstructs visibility. A fogging test for measuring a chemical substance generated from a molded product was performed in accordance with the standard of DIN75201-A.
Specifically, 10 g of a specimen was put in a beaker having a diameter of 80 mm, the beaker was covered with a metal plate wrapped with aluminum foil, and held at 100 ° C. for 16 hours. The metal plate is always cooled. The total mass of the substance adhering to the surface of the aluminum foil having a diameter of 80 mm was measured.
製造した供試体(射出成形品及び圧縮成形品)について、以下に示す規格に従って、引っ張り強度、引っ張り伸び率、シャルピー衝撃強度、曲げ強度、及び曲げ伸び率の測定を行った。
1.引っ張り強度 DIN EN ISO 527-1
2.引っ張り伸び率 DIN EN ISO 527-1
3.シャルピー衝撃強度 DIN EN ISO 179
4.曲げ強度 DIN EN ISO 178
5.曲げ伸び率 DIN EN ISO 178 (Mechanical properties)
The manufactured specimens (injection molded products and compression molded products) were measured for tensile strength, tensile elongation, Charpy impact strength, bending strength, and bending elongation according to the following standards.
1. Tensile strength DIN EN ISO 527-1
2. Tensile elongation DIN EN ISO 527-1
3. Charpy impact strength DIN EN ISO 179
4). Flexural strength DIN EN ISO 178
5. Bending elongation DIN EN ISO 178
前述の製造方法により、1質量%、3質量%、5質量%のブドウポリフェノール水溶液に浸漬させて製造した射出成形品(実施例1A~3A)、1質量%、3質量%、5質量%の緑茶ポリフェノール水溶液に浸漬させて製造した射出成形品(実施例1B~3B)、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例1)について前述の方法により臭気試験を行った。射出成形は、180℃で行った。結果を図1に示す。 [Odor test of injection molded products 1]
Injection molded products (Examples 1A to 3A) produced by immersing in 1% by weight, 3% by weight, and 5% by weight grape polyphenol aqueous solution by the above-described manufacturing method (Examples 1A to 3A), 1% by weight, 3% by weight, 5% by weight The odor test was performed on the injection molded products (Examples 1B to 3B) produced by immersing in a green tea polyphenol aqueous solution and the injection molded products (Comparative Example 1) produced without immersing in a polyphenol aqueous solution by the method described above. Injection molding was performed at 180 ° C. The results are shown in FIG.
前述の製造方法により、1質量%、3質量%、5質量%のブドウポリフェノール水溶液に浸漬させて製造した射出成形品(実施例4A~6A)、1質量%、3質量%、5質量%の緑茶ポリフェノール水溶液に浸漬させて製造した射出成形品(実施例4B~6B)、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例2)について前述の方法によりフォギング試験を行った。射出成形は、180℃で行った。結果を図2に示す。 [Foging test for injection molded products 1]
Injection molded products (Examples 4A to 6A) manufactured by dipping in 1%, 3%, 5% grape polyphenol aqueous solution by the above-described manufacturing method (Examples 4A-6A), 1%, 3%, 5% The fogging test was performed on the injection molded products (Examples 4B to 6B) manufactured by immersing in a green tea polyphenol aqueous solution and the injection molded products (Comparative Example 2) manufactured without immersing in a polyphenol aqueous solution by the method described above. Injection molding was performed at 180 ° C. The results are shown in FIG.
前述の製造方法(射出成形温度180℃及び220℃)により、5質量%のブドウポリフェノール水溶液に浸漬させて製造した射出成形品(実施例7A、8A)、5質量%の緑茶ポリフェノール水溶液に浸漬させて製造した射出成形品(実施例7B、8B)、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例3、4)について前述の方法により臭気試験を行った。結果を図3に示す。 [Odor test of injection molded products 2]
Injection molded products (Examples 7A and 8A) manufactured by immersing in a 5% by weight grape polyphenol aqueous solution by the above-described manufacturing method (injection molding temperatures 180 ° C. and 220 ° C.) and immersed in a 5% by weight green tea polyphenol aqueous solution. The odor test was carried out by the above-described method for the injection molded products manufactured in Examples (Examples 7B and 8B) and the injection molded products manufactured without being immersed in the polyphenol aqueous solution (Comparative Examples 3 and 4). The results are shown in FIG.
前述の製造方法(射出成形温度180℃及び220℃)により、5質量%のブドウポリフェノール水溶液に浸漬させて製造した射出成形品(実施例9A、10A)、5質量%の緑茶ポリフェノール水溶液に浸漬させて製造した射出成形品(実施例9B、参考例10B)、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例5、6)について前述の方法によりフォギング試験を行った。結果を図4に示す。 [Foging test for injection molded products 2]
Injection molded products (Examples 9A and 10A) manufactured by immersing in a 5% by weight grape polyphenol aqueous solution by the above-described manufacturing method (injection molding temperatures 180 ° C. and 220 ° C.) and immersed in a 5% by weight green tea polyphenol aqueous solution. The fogging test was performed on the injection molded products manufactured in Example (Example 9B, Reference Example 10B) and the injection molded products manufactured without being immersed in the aqueous polyphenol solution (Comparative Examples 5 and 6) by the method described above. The results are shown in FIG.
前述の製造方法により、1質量%、3質量%、5質量%のブドウポリフェノール水溶液に浸漬させて製造した圧縮成形品、1質量%、3質量%、5質量%の緑茶ポリフェノール水溶液に浸漬させて製造した圧縮成形品、及びポリフェノール水溶液に浸漬せずに製造した圧縮成形品(比較例)について前述の方法により臭気試験を行った。 [Odor test for compression molded products 1]
A compression molded product produced by dipping in a 1% by mass, 3% by mass, and 5% by mass grape polyphenol aqueous solution by the above-described production method, and immersed in a 1% by mass, 3% by mass, 5% by mass green tea polyphenol aqueous solution. The odor test was performed by the above-mentioned method about the manufactured compression molded product and the compression molded product manufactured without being immersed in the polyphenol aqueous solution (comparative example).
これより、緑茶ポリフェノール水溶液よりもブドウポリフェノール水溶液による処理の方が圧縮成形品からの悪臭低減効果に優れていることが分かる。また、圧縮成形品よりも射出成形品において、悪臭低減効果がより高いことが分かった。 In the comparative example and the compression molded product treated with 1% by mass, 3% by mass, and 5% by mass of the green tea polyphenol aqueous solution, the evaluation was 3.0 to 3.5. On the other hand, the compression molded products treated with 1% by mass, 3% by mass and 5% by mass of grape polyphenol aqueous solution were evaluated as 2.5 to 3.0.
From this, it can be seen that the treatment with the grape polyphenol aqueous solution is superior to the malodor reduction effect from the compression molded product than the green tea polyphenol aqueous solution. Moreover, it turned out that the malodor reduction effect is higher in the injection molded product than in the compression molded product.
前述の製造方法おいて、ブドウポリフェノールを溶解させる溶媒を水100質量%+エタノール0質量%、水80質量%+エタノール20質量%、水50質量%+エタノール50質量%に変えて、それぞれ3質量%のブドウポリフェノール溶液に浸漬させて製造した圧縮成形品(実施例11A~13A)、及びポリフェノール溶液に浸漬せずに製造した圧縮成形品(比較例7)について前述の方法により臭気試験を行った。結果を図5に示す。 [Odor test of compression molded products 2]
In the above-mentioned production method, the solvent for dissolving grape polyphenol was changed to 3% by mass, changing to 100% by mass of water + 0% by mass of ethanol, 80% by mass of water + 20% by mass of ethanol, 50% by mass of water + 50% by mass of ethanol. The odor test was performed on the compression molded products (Examples 11A to 13A) manufactured by dipping in a 1% grape polyphenol solution and the compression molded products manufactured without dipping in the polyphenol solution (Comparative Example 7) by the method described above. . The results are shown in FIG.
また、ブドウポリフェノール中のプロアントシアニジンは分子量が大きいため、常温の純水への溶解性が悪く、溶液を作成するのに長い時間を要するが、水80質量%にエタノール20質量%を加えた溶媒、及び水50質量%にエタノール50質量%を加えた溶媒では、プロアントシアニジンの溶解性が格段に向上し、短時間で溶液を作成することができた。水溶媒にエタノールを添加することにより、工程時間の短縮が可能となる。 As can be seen from FIG. 5, in any of Examples 11A to 13A, the odor could be reduced as compared with Comparative Example 7.
Proanthocyanidins in grape polyphenol have a large molecular weight, so they have poor solubility in pure water at room temperature, and it takes a long time to prepare a solution. However, a solvent in which 20% by mass of ethanol is added to 80% by mass of water. In addition, in a solvent in which 50% by mass of ethanol was added to 50% by mass of water, the solubility of proanthocyanidins was remarkably improved, and a solution could be prepared in a short time. The process time can be shortened by adding ethanol to the aqueous solvent.
前述の製造方法により、1質量%、3質量%、5質量%のブドウポリフェノール水溶液又は緑茶ポリフェノール水溶液に浸漬させて製造した射出成形品(実施例)、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例)について前述の方法により機械特性の測定を行った。射出成形は、180℃で行った。結果を図6~10に示す。 [Mechanical properties of injection molded products]
According to the above-described manufacturing method, an injection molded product manufactured by immersing in 1% by mass, 3% by mass, 5% by mass of grape polyphenol aqueous solution or green tea polyphenol aqueous solution (Example), and injection manufactured without immersing in polyphenol aqueous solution The mechanical properties of the molded product (comparative example) were measured by the method described above. Injection molding was performed at 180 ° C. The results are shown in FIGS.
前述の製造方法により、1質量%、3質量%、5質量%のブドウポリフェノール水溶液又は緑茶ポリフェノール水溶液に浸漬させて製造した圧縮成形品、及びポリフェノール水溶液に浸漬せずに製造した圧縮成形品(比較例)について前述の方法により機械特性の測定を行った。ポリフェノールを担持させた亜麻繊維とポリプロピレン母材との圧縮成形品は、厚さ3mm、密度3.1kg/m2であった。圧縮成形前のポリフェノールを担持させた亜麻繊維は、厚さ5mm、密度430g/m2であった。結果を図11~15に示す。 [Mechanical properties of compression molded products]
A compression molded product manufactured by immersing in 1% by weight, 3% by weight, 5% by weight of a grape polyphenol aqueous solution or a green tea polyphenol aqueous solution, and a compression molded product manufactured without immersing in a polyphenol aqueous solution (comparison) Example) was measured for mechanical properties by the method described above. The compression molded product of the flax fiber carrying the polyphenol and the polypropylene base material had a thickness of 3 mm and a density of 3.1 kg / m 2 . The flax fiber supporting polyphenol before compression molding had a thickness of 5 mm and a density of 430 g / m 2 . The results are shown in FIGS.
前述の製造方法により、3質量%のブドウポリフェノール水溶液に浸漬させて製造した射出成形品、及びポリフェノール水溶液に浸漬せずに製造した射出成形品(比較例)について、約2.5cm×2.5cmに切り出した2.0gの供試サンプルからの揮散成分をマイクロ固相抽出-ガスクロマトフラフ質量分析法により分析した。供試サンプルを80℃で2時間加温し、その際に発生した揮発成分について分析を行なった。 [GC mass spectrum]
About 2.5 cm × 2.5 cm of an injection molded product manufactured by immersing in a 3 mass% grape polyphenol aqueous solution and an injection molded product manufactured without immersing in a polyphenol aqueous solution by the above-described manufacturing method (Comparative Example) Volatile components from 2.0 g of the test sample cut out were analyzed by micro solid phase extraction-gas chromatography fluff mass spectrometry. The test sample was heated at 80 ° C. for 2 hours, and the volatile components generated at that time were analyzed.
Claims (15)
- 天然繊維と熱可塑性樹脂とを用いた複合材料の製造方法であって、
前記天然繊維に植物由来のポリフェノールを担持させる工程を有することを特徴とする複合材料の製造方法。 A method for producing a composite material using natural fibers and a thermoplastic resin,
A method for producing a composite material, comprising a step of supporting a plant-derived polyphenol on the natural fiber. - 前記担持させる工程は、前記ポリフェノールを溶解させた溶液に前記天然繊維を浸漬させる工程(以下、浸漬工程という。)を含むことを特徴とする請求項1記載の複合材料の製造方法。 The method for producing a composite material according to claim 1, wherein the supporting step includes a step of immersing the natural fiber in a solution in which the polyphenol is dissolved (hereinafter referred to as an immersing step).
- 前記ポリフェノールは、分子量440以上の多量体又は分子量230以上の1量体であることを特徴とする請求項1又は請求項2に記載の複合材料の製造方法。 3. The method for producing a composite material according to claim 1, wherein the polyphenol is a multimer having a molecular weight of 440 or more or a monomer having a molecular weight of 230 or more.
- 前記植物は、ブドウ又は緑茶であることを特徴とする請求項1~3のいずれか1項に記載の複合材料の製造方法。 The method for producing a composite material according to any one of claims 1 to 3, wherein the plant is grape or green tea.
- 前記ポリフェノールは、1~5質量%ポリフェノール含有水溶液として用いられることを特徴とする請求項1~4のいずれか1項に記載の複合材料の製造方法。 The method for producing a composite material according to any one of claims 1 to 4, wherein the polyphenol is used as an aqueous solution containing 1 to 5% by mass of polyphenol.
- 前記ポリフェノールは、溶媒が水99.9~50質量%及びエタノール0.1~50質量%であるポリフェノール含有溶液として用いられることを特徴とする請求項1~4のいずれか1項に記載の複合材料の製造方法。 The composite according to any one of claims 1 to 4, wherein the polyphenol is used as a polyphenol-containing solution whose solvent is 99.9 to 50% by mass of water and 0.1 to 50% by mass of ethanol. Material manufacturing method.
- 前記複合材料は、前記天然繊維を10~80質量%及び前記熱可塑性樹脂を90~20質量%用いて製造されることを特徴とする請求項1~6のいずれか1項に記載の複合材料の製造方法。 The composite material according to any one of claims 1 to 6, wherein the composite material is manufactured using 10 to 80% by mass of the natural fiber and 90 to 20% by mass of the thermoplastic resin. Manufacturing method.
- 前記複合材料は、ペレット粒子の形状にされた後、前記浸漬工程に付されることを特徴とする請求項2~7のいずれか1項に記載の複合材料の製造方法。 The method for producing a composite material according to any one of claims 2 to 7, wherein the composite material is subjected to the dipping step after being formed into pellet particles.
- 前記複合材料は、マット形状にされた後、前記浸漬工程に付されることを特徴とする請求項2~7のいずれか1項に記載の複合材料の製造方法。 The method for producing a composite material according to any one of claims 2 to 7, wherein the composite material is subjected to the dipping step after being formed into a mat shape.
- 前記天然繊維は、マット形状にされた後、前記複合材料とされる前に、前記浸漬工程に付されることを特徴とする請求項2~7のいずれか1項に記載の複合材料の製造方法。 The composite material according to any one of claims 2 to 7, wherein the natural fiber is subjected to the dipping step after being formed into a mat shape and before being formed into the composite material. Method.
- 熱可塑性樹脂と植物由来のポリフェノールが担持された天然繊維とを含む複合材料。 A composite material comprising a thermoplastic resin and natural fibers carrying plant-derived polyphenols.
- 請求項1~11のいずれか1項に記載の前記複合材料をプラスチック成形して製造されることを特徴とする天然繊維含有プラスチック。 A natural fiber-containing plastic produced by plastic molding of the composite material according to any one of claims 1 to 11.
- 請求項1~8、11のいずれか1項に記載の前記複合材料を射出成形して製造されることを特徴とする天然繊維含有プラスチック。 A natural fiber-containing plastic produced by injection molding the composite material according to any one of claims 1 to 8 and 11.
- 請求項1~7、9~11のいずれか1項に記載の前記複合材料を圧縮成形して製造されることを特徴とする天然繊維含有プラスチック。 A natural fiber-containing plastic produced by compression-molding the composite material according to any one of claims 1 to 7 and 9 to 11.
- 天然繊維と熱可塑性樹脂とを用いて複合材料を製造する工程と、
前記複合材料を射出成形又は圧縮成形する工程とを有し、
前記複合材料を製造する工程は、前記天然繊維に植物由来のポリフェノールを担持させる工程を含むことを特徴とする天然繊維含有プラスチックの製造方法。
Producing a composite material using natural fibers and a thermoplastic resin;
A step of injection molding or compression molding the composite material,
The method for producing a natural fiber-containing plastic is characterized in that the step of producing the composite material includes a step of supporting a plant-derived polyphenol on the natural fiber.
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JP2014095049A (en) * | 2012-11-12 | 2014-05-22 | Polymer Associates Kk | Cellulose fiber reinforced thermoplastic resin composite molded article |
CN109867814A (en) * | 2017-12-01 | 2019-06-11 | 丰田纺织株式会社 | Fibrous composite and its production method |
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JPWO2011071121A1 (en) | 2013-04-22 |
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