WO2014167950A1 - 複合形成材料、射出成形品及び複合形成材料の製造方法 - Google Patents
複合形成材料、射出成形品及び複合形成材料の製造方法 Download PDFInfo
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- WO2014167950A1 WO2014167950A1 PCT/JP2014/057233 JP2014057233W WO2014167950A1 WO 2014167950 A1 WO2014167950 A1 WO 2014167950A1 JP 2014057233 W JP2014057233 W JP 2014057233W WO 2014167950 A1 WO2014167950 A1 WO 2014167950A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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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
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
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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
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/286—Raw material dosing
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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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
- B29C45/0005—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fibre reinforcements
Definitions
- the present invention relates to a composite forming material, an injection-molded article, and a method for manufacturing the composite forming material, and in particular, a composite forming material capable of filling a minute part of a mold with a reinforcing material at the time of injection molding, and the composite forming
- the present invention relates to an injection-molded product obtained by injection-molding a material, and a method for producing a composite forming material.
- Plastics are used for various applications because they are lightweight, but their elasticity is low and they are not suitable as structural materials. Therefore, it has been used as a lightweight and high-strength material by forming a composite material with a material having a high elastic modulus such as glass fiber.
- a reinforcing material for forming the composite forming material a fibrous reinforcing material such as carbon fiber, high-strength resin fiber, Kevlar, Dyneema and the like is known in addition to the glass fiber.
- composite forming materials are used in a wide range of fields such as mechanical mechanism parts, electrical parts, aircraft parts, ship parts, automobile parts, office parts, building materials, textile products, sundries, etc. If the dispersion is not uniform, problems such as warping occur during use of the product, and therefore it is important to uniformly disperse the reinforcing material in the resin.
- the reinforcing material since the reinforcing material is preliminarily formed into a uniform mesh shape and infiltrated into the plastic, the reinforcing material can be uniformly dispersed in the resin.
- a reinforcing material is kneaded with a thermoplastic resin heated and melted by an extruder to produce a composite forming material pellet first, and then the pellet is supplied to an injection molding machine.
- the product is manufactured by a two-stage process performed by heating and kneading, melting the resin, injecting into a mold, and shaping, or (2) a one-stage process in which kneading and injection molding are performed in series. Therefore, there is a merit that it is excellent in mass productivity.
- glass fibers having an average fiber diameter of about 10 to 18 ⁇ m (see Patent Document 1) and glass fibers of about 10 to 20 ⁇ m (see Patent Document 2) are known.
- Chopped strands are generally used, which are glass fibers obtained by collecting 50 to 200 single fibers of a size and cut into a predetermined length.
- the inventors of the present invention have introduced the short glass fiber in the composite forming material obtained by heating the short glass fiber and adding it to the thermoplastic resin when the short glass fiber is put into the molten thermoplastic resin. It has been found that the fibers are difficult to cut compared to the case where the fibers are added without heating and can be dispersed in the thermoplastic resin in a state where the fiber length is maintained relatively long (see Patent Document 4). .
- an injection molded product produced by injection molding has a complicated and fine structure, for example, a part of the injection molded product has a different thickness, a part of the injection molded product is bent, A fine shape such as a lattice shape is provided on a part of the injection molded product (hereinafter, a portion having a different thickness, a bent portion, and a fine shape portion in the injection molded product may be referred to as a “fine portion”.
- JP 2009-7179 A JP 2007-277391 A JP 2011-183638 A Japanese Patent Application No. 2012-089067
- the present invention has been made in order to solve the above-mentioned problems, and as a result of intensive research, a composite forming material is produced using a thermoplastic resin and two or more fibrous reinforcing materials having different average fiber diameters.
- a composite forming material is produced using a thermoplastic resin and two or more fibrous reinforcing materials having different average fiber diameters.
- an object of the present invention is to provide a composite forming material, an injection molded article, and a method for manufacturing the composite forming material.
- the present invention relates to a composite forming material, an injection-molded product, and a method for manufacturing the composite forming material shown below.
- a composite comprising a thermoplastic resin, a short glass fiber having an average fiber diameter of 1 to 7 ⁇ m and a fiber length before kneading of 300 to 1000 ⁇ m, and a fibrous reinforcing material having an average fiber diameter of 7 to 20 ⁇ m Forming material.
- Said short glass fiber is what was surface-treated with at least 1 sort (s) selected from a silane coupling agent, a lubricant, and a film formation material, The said (1) or (2) characterized by the above-mentioned Composite forming material.
- the glass fiber has been surface-treated with at least one selected from a silane coupling agent, a lubricant, and a film forming material, as described in (2) or (3) above Composite forming material.
- a composite forming material comprising a thermoplastic resin, short glass fibers having an average fiber diameter of 1 to 7 ⁇ m and a fiber length of 300 to 1000 ⁇ m before kneading, and a fibrous reinforcing material having an average fiber diameter of 7 to 20 ⁇ m.
- at least the short glass fiber of the reinforcing material is heated to ⁇ 150 to + 50 ° C. based on the temperature of the molten thermoplastic resin and then charged into the molten thermoplastic resin. Forming material.
- a method for producing a composite forming material comprising a thermoplastic resin, short glass fibers having an average fiber diameter of 1 to 7 ⁇ m and a fiber length of 300 to 1000 ⁇ m before kneading, and a fibrous reinforcing material having an average fiber diameter of 7 to 20 ⁇ m Wherein at least short glass fibers of the reinforcing material are heated to ⁇ 150 to + 50 ° C. on the basis of the temperature of the molten thermoplastic resin and then charged into the molten thermoplastic resin. Manufacturing method. (9) The method for producing a composite-forming material as described in (8) above, wherein the fibrous reinforcing material having an average fiber diameter of 7 to 20 ⁇ m is glass fiber.
- the reinforcing material can be filled up to the fine part of the obtained injection molded product. Therefore, while maintaining the strength of the injection-molded product itself, the strength of the fine part can be improved, and products such as small cooling fans and semiconductor burn-in sockets that have a complicated structure and require the strength of the fine part are injection-molded. Can be produced efficiently.
- the composite forming material of the present invention includes two or more fibrous reinforcing materials having different average fiber diameters.
- the proportion of the reinforcing material having a large average fiber diameter can be reduced.
- the viscosity of the composite forming material at the time of molding can be lowered. Therefore, the pressure for pushing the molten composite forming material into the mold can be lowered, so that the wear of the mold is reduced and the durability is improved.
- the dispersibility of a reinforcing material having a large average fiber diameter is improved, so that there is little variation in strength depending on individual products and / or locations in the same product.
- the product yield can be increased.
- the reinforcing material having the lowest bulk density was heated to ⁇ 150 to + 50 ° C. based on the temperature of the molten thermoplastic resin and then melted.
- the fiber length of the reinforcing material in the composite forming material can be kept longer, and the strength of an injection molded product using the composite forming material can be improved.
- FIG. 1 is an image diagram illustrating an outline of a cooling module turbofan manufactured in the third embodiment.
- FIG. 2 is a drawing-substituting photograph showing a state in which a load is applied to the fan with the jig of the testing machine in the breaking strength test of the cooling module turbofan manufactured in Example 3.
- FIG. 3 is a drawing-substituting photograph showing a state in which a load is applied to the blade with a jig of a testing machine in a bending test of the blade cut out from the cooling module turbofan manufactured in Example 3.
- FIG. 4 is a graph showing the results of the breaking strength test of the cooling module turbofan manufactured in Example 3, Comparative Example 4 and Comparative Example 5 and the bending test of the blade cut out from the cooling module turbofan.
- FIG. 1 is an image diagram illustrating an outline of a cooling module turbofan manufactured in the third embodiment.
- FIG. 2 is a drawing-substituting photograph showing a state in which a load is applied to the fan with the
- FIG. 5 is a drawing substitute photograph showing a blade fixed to a sample holder for X-ray CT imaging.
- the tip portion surrounded by a circle is a portion taken by X-ray CT.
- FIG. 6 is a drawing-substituting photograph, in which (a) shows a transmission 3D image of the tip portion of the blade cut out from the fan manufactured in Example 3 and (b) in Comparative Example 4.
- FIG. 7 is a photograph substituted for a drawing and showing the semiconductor burn-in socket obtained in Example 4. A portion surrounded by a circle indicates a lattice-shaped fine portion.
- FIG. 6 is a drawing-substituting photograph, in which (a) shows a transmission 3D image of the tip portion of the blade cut out from the fan manufactured in Example 3 and (b) in Comparative Example 4.
- FIG. 7 is a photograph substituted for a drawing and showing the semiconductor burn-in socket obtained in Example 4. A portion surrounded by a circle indicates a lattice-shaped fine portion.
- FIG. 8 is a drawing-substituting photograph showing a state in which the lattice-like portion of the semiconductor burn-in socket obtained in Example 4 is fixed to the sample holder.
- FIG. 9 is a drawing-substituting photograph, (a) is a photograph of a transmission 3D image of a lattice-like portion of the semiconductor burn-in socket obtained in Example 4, and (b) is Comparative Example 6.
- thermoplastic resin constituting the composite forming material of the present invention is not particularly limited as long as the reinforcing material can be dispersed.
- general-purpose plastics, engineering plastics, super engineering plastics, and the like have been conventionally used.
- polyethylene PE
- polypropylene PP
- polyvinyl chloride PVC
- polyvinylidene chloride PS
- polyvinyl acetate PVAc
- polytetrafluoroethylene PTFE
- ABS resin Acrylonitrile butadiene styrene resin
- AS resin styrene acrylonitrile copolymer
- acrylic resin PMMA
- Engineering plastics include polyamide (PA), polyacetal (POM), polycarbonate (PC), modified polyphenylene ether (m-PPE, modified PPE, PPO), polybutylene terephthalate (PBT), polyethylene terephthalate (typified by nylon) PET), syndiotactic polystyrene (SPS), cyclic polyolefin (COP) and the like.
- PA polyamide
- POM polyacetal
- PC polycarbonate
- m-PPE modified polyphenylene ether
- PPE polybutylene terephthalate
- PET polyethylene terephthalate
- SPS syndiotactic polystyrene
- COP cyclic polyolefin
- Super engineering plastics include polyetherimide (PEI), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), polysulfone (PSF), polyethersulfone (PES), amorphous polyarylate (PAR), poly Examples include ether ether ketone (PEEK), thermoplastic polyimide (PI), and polyamideimide (PAI). These resins may be used alone or in combination of two or more.
- PEI polyetherimide
- PPS polyphenylene sulfide
- PTFE polytetrafluoroethylene
- PSF polysulfone
- PES polyethersulfone
- PAR amorphous polyarylate
- PEEK ether ether ketone
- PI thermoplastic polyimide
- PAI polyamideimide
- fibrous reinforcing material examples include glass fiber, glass short fiber, carbon fiber, Examples thereof include cellulose fiber, aramid fiber, polyimide fiber, polyamideimide fiber, heterocyclic high-performance fiber, polyarylate fiber, Kevlar, Dyneema, potassium titanate fiber, and ceramic fiber.
- the composite forming material of the present invention contains at least two reinforcing materials having different average fiber diameters, and may be appropriately selected according to the shape of the target injection molded product.
- the composite forming material of the present invention may be added with a filler such as quartz, silica, talc, calcium oxide, magnesium hydroxide, aluminum hydroxide as necessary. May be.
- a filler such as quartz, silica, talc, calcium oxide, magnesium hydroxide, aluminum hydroxide as necessary. May be.
- the “reinforcing material” means an aggregate of selected one type of reinforcing material, and does not mean individual fibers included in the reinforcing material.
- the average fiber diameters of the selected at least two kinds of reinforcing materials are different, and due to variations in individual fiber diameters included in the reinforcing material, the individual fiber diameters of the two kinds of selected reinforcing materials are different. There is no problem even if some of them overlap.
- the two or more reinforcing materials having different average fiber diameters may be fibers of different materials as long as the average fiber diameters of the reinforcing materials are different, for example, glass fibers and short glass fibers. Alternatively, fibers having the same material but different average fiber diameters may be used.
- the composite forming material of the present invention includes two or more reinforcing materials having different average fiber diameters, so that the reinforcing material having a small average fiber diameter is a reinforcing material having a large average fiber diameter while maintaining the strength of the injection molded product.
- the strength of the fine part of the injection-molded product can also be improved.
- the composite forming material needs to maintain the strength of the injection-molded product, for example, 7 to 20 ⁇ m, preferably Preferably, a reinforcing material having an average fiber diameter of about 10 to 18 ⁇ m is included.
- the average fiber diameter is larger than 20 ⁇ m, the surface of the injection-molded product becomes rough, and the fluidity of the composite forming material is deteriorated, so that it is necessary to increase the pressing pressure into the mold at the time of injection molding. Tends to wear, which is not preferable. Further, since it is preferable that the fine part of the injection molded product can be filled with the reinforcing material, for example, a reinforcing material having an average fiber diameter of about 1 to 7 ⁇ m, preferably about 3 to 4 ⁇ m is preferably included.
- the manufacturing cost becomes extremely high, and the bulk density of the fibers increases, making it difficult to homogenize kneading into the thermoplastic resin. Since it becomes easy to cut
- the reinforcing material having a different average fiber diameter there is no particular limitation as long as the reinforcing material is added as long as the average fiber diameter is 1 to 20 ⁇ m, and the strength of the injection molded product itself or the fine part is improved. What is necessary is just to select the reinforcement material to add suitably according to.
- Examples of the reinforcing material satisfying the combination of the average fiber diameters include, for example, short glass fiber + glass fiber, short glass fiber + carbon fiber, ceramic fiber + glass fiber, potassium titanate fiber + glass fiber, short glass fiber + Kevlar, and glass.
- Short fiber + polyimide fiber short glass fiber + glass fiber + carbon fiber, short glass fiber + glass fiber + ceramic fiber, short glass fiber + glass fiber + potassium titanate fiber, short glass fiber + glass fiber + Kevlar, short glass fiber + Glass fiber + polyimide fiber, etc.
- the above-mentioned reinforcing material is not particularly limited as long as it is generally manufactured or available in the technical field.
- the glass fiber chopped strand obtained by cutting glass fibers obtained by collecting 50 to 200 single fibers having an average fiber diameter of 7 to 20 ⁇ m into a predetermined length can be used.
- the short glass fibers glass fibers having an average fiber diameter of about 1 to 7 ⁇ m and a fiber length of about 300 to 1000 ⁇ m can be used.
- the carbon fiber a single fiber filament of a PAN-based carbon fiber having an average fiber diameter of 5 to 7 ⁇ m and a single fiber filament of a pitch-based carbon fiber having an average fiber diameter of 7 to 10 ⁇ m can be used.
- amorphous alumina silica fiber having an average fiber diameter of 2 to 4 ⁇ m and crystalline fiber (AF) having an average fiber diameter of 2 to 5 ⁇ m
- potassium titanate fiber one having an average fiber diameter of about 1 to 2 ⁇ m can be used.
- the above-mentioned illustration shows an average fiber diameter that is commonly used, and in addition to the fibers exemplified above, cellulose fiber, aramid fiber, polyimide fiber, polyamideimide fiber, heterocyclic high-performance fiber, The average fiber diameter of fibers such as polyarylate fibers, Kevlar, and Dyneema can be adjusted by adjusting the production process.
- thermoplastic resin is an organic material, so the inorganic reinforcing material is simply dispersed in the thermoplastic resin. Then, the adhesiveness between the inorganic reinforcing material and the thermoplastic resin is weakened. Therefore, it is preferable to disperse the inorganic reinforcing material in the thermoplastic resin after surface treatment with a silane coupling agent.
- the silane coupling agent is not particularly limited as long as it is conventionally used, and may be determined in consideration of the reactivity with the thermoplastic resin constituting the composite forming material, thermal stability, etc.
- examples thereof include silane coupling agents such as aminosilane, epoxysilane, allylsilane, and vinylsilane.
- silane coupling agents such as aminosilane, epoxysilane, allylsilane, and vinylsilane.
- commercially available products such as Z series manufactured by Toray Dow Corning, KBM series manufactured by Shin-Etsu Chemical Co., Ltd., KBE series, and JNC manufactured may be used.
- the above-mentioned silane coupling agent can be surface-treated with an inorganic reinforcing material by being dissolved in a solvent and sprayed and dried on the inorganic reinforcing material.
- the weight percentage of the silane coupling agent with respect to the inorganic reinforcing material is 0.1 to 2.0 wt%, preferably 0.15 to 0.4 wt%, and more preferably 0.24 wt%.
- the inorganic reinforcing material may be surface-treated with a lubricant.
- the lubricant is not particularly limited as long as the inorganic reinforcing material is kneaded into the thermoplastic resin so that the inorganic reinforcing material can be easily slipped and easily dispersed in the thermoplastic resin.
- the lubricant used can be used, but calixarene is particularly preferred. Silicon is poor in affinity with thermoplastic resin because it is oil, but calixarene is phenolic resin, so it improves slipping of inorganic reinforcing material, but has excellent affinity with thermoplastic resin Therefore, the addition amount of the inorganic reinforcing material in the composite forming material can be increased while maintaining the inorganic reinforcing material.
- the calixarene is a cyclic oligomer in which a plurality of (for example, in the range of 4 to 8) phenol units or resorcin units are cyclically bonded.
- examples of tetramers include resorcin represented by the following formula (1).
- a cyclic tetramer can be mentioned.
- R 1 represents a hydroxyl group
- R 2 represents a linear alkyl group having 1 to 17 carbon atoms or a phenyl group.
- resorcinol or a resorcinol derivative and an aldehyde compound (paraformaldehyde or paraaldehyde) at a predetermined molar ratio in an ethanol or acetic acid solvent under hydrochloric acid or sulfuric acid catalyst
- a cyclic compound and a linear compound can be synthesized by reacting at a predetermined temperature for several hours. Only the calixarene can be obtained by isolation from the synthesized product by recrystallization from methanol or the like.
- the reaction represented by the following formula (2) can be mentioned, and only the calixarene can be isolated from the product.
- R 3 represents C 10 H 21.
- the p-polyhydroxycalix [6] arene can be synthesized, for example, by the procedure of the following formula (4), and details are described in Macromolecules 2005, 38, 6871-6875.
- the solvent for dissolving the synthesized calixarene is not particularly limited as long as it can dissolve calixarene.
- the surface treatment of the inorganic reinforcing material is performed by spraying and drying a solution in which calixarene is dissolved on the inorganic reinforcing material.
- the solution in which the calixarene is dissolved can be produced by the above-described production method, but for example, a plastic modifier nanodaX (registered trademark) manufactured by Nanodax may be used.
- the weight percentage of the plastic modifier nanodaX (registered trademark) relative to the inorganic reinforcing material is preferably 0.001 to 0.5 wt%, more preferably 0.01 to 0.3 wt%.
- the inorganic reinforcing material may be treated with the silane coupling agent or the lubricant, or may be treated with the silane coupling agent and the lubricant.
- the inorganic reinforcing material is used to form a known film such as epoxy resin, vinyl acetate resin, vinyl acetate copolymer resin, urethane resin, acrylic resin, etc. You may surface-treat with an agent.
- film forming agents can be used alone or in admixture of two or more kinds, and the weight percentage of the film forming agent is preferably 5 to 15 times that of the silane coupling agent.
- the inorganic reinforcing material may be subjected to the above-mentioned surface treatment before kneading with the thermoplastic resin, or an inorganic reinforcing material surface-treated with only a lubricant is prepared, depending on the thermoplastic resin to be used. Before kneading, surface treatment with a desired silane coupling agent may be performed. Further, it may be surface-treated with a lubricant and a silane coupling agent in advance, or may be further pretreated with a film forming agent as required.
- the composite-forming material of the present invention includes known UV absorbers, stabilizers, antioxidants, plasticizers, colorants, color-adjusting agents, flame retardants, antistatic agents, fluorescent substances, as long as the object of the present invention is not impaired. Additives such as brighteners, matting agents, impact strength improvers and the like can also be blended.
- the composite-forming material of the present invention comprises a thermoplastic resin, two or more reinforcing materials having different average fiber diameters that are surface-treated as necessary, and various additives that are added as necessary. It can be produced by melt kneading at a temperature of 200 to 400 ° C. using a known melt kneader such as an extruder, kneader, mixin gall, Banbury mixer and the like.
- the production apparatus is not particularly limited, but melt kneading using a twin screw extruder is simple and preferable.
- the kneaded composite forming material may be directly injection-molded into a mold, or may be injection-molded after being once pelletized.
- the composite forming material of the present invention may be prepared by first preparing a plurality of types of pellets containing only one type of reinforcing material, and melting and mixing the pellets containing reinforcing materials having different average fiber diameters. Alternatively, it may be produced by dry blending a combination of pellets containing reinforcing materials having different average fiber diameters. Furthermore, a pellet containing at least one type of reinforcing material may be first prepared, and after the pellet is melted, reinforcing materials having different average fiber diameters may be added and kneaded.
- the reinforcing material having the lowest bulk density may be heated and added to the molten thermoplastic resin.
- the apparent volume of the short glass fiber with respect to the thermoplastic resin of the same weight is about 20 times, and contains a lot of air. Therefore, when glass short fibers are sequentially added to the molten thermoplastic resin, only the portion of the thermoplastic resin in contact with the injected glass short fibers is held between the cotton-like short glass fibers. And the viscosity changes with other thermoplastic resin parts.
- thermoplastic resin in the state from which a viscosity differs, it will be for the load which is different to a glass short fiber to be applied, and as a result, a glass short fiber becomes easy to cut
- heating in advance is not limited to the reinforcing material having the lowest bulk density, and other reinforcing materials may be added after heating.
- the heating temperature of the reinforcing material is preferably about ⁇ 150 ° C. to + 50 ° C. based on the temperature of the molten thermoplastic resin. Increasing the melting temperature of the thermoplastic resin decreases the viscosity and facilitates dispersion of the reinforcing material. However, if the temperature of the thermoplastic resin is excessively increased, the characteristics may change rapidly. Therefore, in the present invention, it is desirable to heat the reinforcing material while melting the thermoplastic resin at a temperature normally performed in this field. Although the heating temperature of the reinforcing material depends on the type of the thermoplastic resin used, in order to avoid deterioration of the thermoplastic resin, it is more preferable to heat to about + 20 ° C. based on the melting temperature of the thermoplastic resin.
- the lower limit is not particularly limited since an effect can be obtained by heating, but is preferably about ⁇ 100 ° C., more preferably about ⁇ 50 ° C. based on the melting temperature of the thermoplastic resin. Most preferably, the reinforcement is heated to the same temperature as the molten resin.
- the heating of the reinforcing material is not particularly limited as long as the reinforcing material can be heated and charged into the molten thermoplastic resin, for example, a heating means is provided in the hopper portion of the reinforcing material charging device of the kneading apparatus.
- the heating means is heated by passing the reinforcing material through a tube provided around it, and then poured into a molten thermoplastic resin. Good.
- the reinforcing material in the composite forming material produced by the above method is difficult to cut because there is little change in the viscosity of the thermoplastic resin during kneading. Therefore, since the fiber length of the reinforcing material can be dispersed in the thermoplastic resin while maintaining a longer length, the strength of the composite forming material can be increased, and the strength of the injection molded product using the composite forming material can be increased. Can also be improved. Furthermore, when inorganic reinforcing materials are used, the surface treatment with a lubricant, particularly calixarene, improves the sliding properties of the inorganic reinforcing materials. The reinforcing material can be dispersed in the thermoplastic resin.
- the blending ratio of the total reinforcing material to the thermoplastic resin, and the blending ratio of the reinforcing material and the reinforcing material are determined depending on the strength of the desired injection molded product, the shape of the fine part of the injection molded product, and the like. What is necessary is just to select suitably.
- the composite forming material of the present invention is particularly useful as a raw material for injection molding. Moreover, as an application of the injection molded product of this invention, it can be used in fields, such as a motor vehicle field
- vehicle fans such as radiator tanks, fans, radiator fans, fasteners, wheel caps, cylinder head covers, door handles, seat belt parts, bumpers, valves, electrical parts, interior parts, etc. .
- fans such as cooling module turbo fans, semiconductor burn-in sockets and other evaluation jigs, connectors, reflectors, coil bobbins, switch parts, signal tubes, terminal blocks, electronic washing machines, refrigerators,
- a vacuum cleaner, a telephone, a mobile phone, a television, a personal computer, a heating / cooling device, a lighting device, a fan, an electric kettle, an iron, a player, and the like can be given.
- Others include sash parts, screws, gears, rack and pinions, bearings, shafts, springs, sliding parts of door wheels, bearings, gears, resin casters, solid tires, general machine fields and home appliance parts.
- the composite forming material of the present invention has a particularly excellent effect for use in injection molding, but can be used for other than injection molding such as press molding of a sheet-like material.
- the kneading conditions were as follows: screw rotation speed 120 rpm, resin pressure 0.9 Mpa, current 36 A, feed amount 15 Kg / hr. Moreover, the resin temperature of PBT at the time of kneading
- Example 1 The short glass fiber 1-containing pellets produced by the above procedure and the pellets containing 6 wt% of glass fibers (average fiber diameter: 13 ⁇ m) (Japan Polyplastics 6840GF30) are mixed at a ratio of 1: 1, and the number of rotations by a tumbler A composite forming material was prepared by dry blending at 30 rpm for 10 minutes.
- Comparative Example 1 A pellet (6840GF30 manufactured by Japan Polyplastics) containing 30 wt% of the glass fiber was used as the composite forming material of Comparative Example 1.
- Comparative Example 2 The short glass fiber 1-containing pellet produced above was used as the composite forming material of Comparative Example 2.
- Table 1 shows the content of the reinforcing material in the composite forming materials of Example 1, Comparative Example 1, and Comparative Example 2 above.
- a short glass fiber 2 was prepared in the same manner as the short glass fiber 1 except that an aminosilane coupling agent S330 (manufactured by Chisso Corporation) was used as the silane coupling agent and no film forming agent was used.
- S330 aminosilane coupling agent (manufactured by Chisso Corporation) was used as the silane coupling agent and no film forming agent was used.
- Example 2 The produced short glass fiber 2-containing pellets and pellets containing 20 wt% of glass fibers (average fiber diameter: 13 ⁇ m) (ULTEM 2200 manufactured by SABIC Innovative Plastics) were mixed at a ratio of 1: 1, and rotated at 30 rpm with a tumbler. A composite forming material was produced by dry blending for 10 minutes.
- Comparative Example 3 A pellet containing 20 wt% of glass fiber (ULTEM 2200 manufactured by SABIC Innovative Plastics) was used as Comparative Example 3.
- Table 2 shows the content of the reinforcing material in the composite forming materials of Example 2 and Comparative Example 3 above.
- Example 3 ⁇ Production of cooling module turbofan>
- the composite forming material produced in Example 1 is injection-molded into a mold for producing a cooling module turbofan (hereinafter sometimes simply referred to as “fan”) having the shape shown in FIG. It was.
- the injection molding machine uses the HXF33J8 model of NING BO HAI XING PLASTICS MACHINERY MANUFACTURERING CO., LTD., And the temperature of the injection cylinder nozzle when filling the mold with the composite forming material.
- the obtained fan had a radius R of 23 mm, the height of the portion 1 where the blades were formed (total thickness of the fan) was 9 mm, and the thickness 2 of each blade was about 0.5 mm.
- FIG. 2 is a photograph showing a state in which a load is applied to the fan with the jig of the testing machine.
- a universal testing machine model AG-1 manufactured by Shimadzu Corporation was used as a testing machine, and a breaking strength test was performed with a circular breaking jig having a diameter of 20 mm under a head speed of 1.0 mm / min.
- the breaking strength of the fan was evaluated based on the maximum load (maximum point test force / N) when the outer edge portion of the fan was broken by applying a load. For the evaluation, six fans produced under the same conditions were used.
- FIG. 3 is a photograph showing a state in which a load is applied to the blade with the jig of the testing machine.
- a universal testing machine model AG-1 manufactured by Shimadzu Corporation was used as the testing machine, and a bending test was performed with a minus-type bending jig at a distance between fulcrums of 6.0 mm and a head speed of 1.0 mm / min. It was.
- the bending strength of the blade was evaluated by a load (maximum point test force / N) which was bent by applying a load to a position 5 mm inside from the outer periphery of the blade. For evaluation, 19 blades cut out from the same fan were used.
- Comparative Example 4 Using the composite forming material of Comparative Example 1, a fan was injection molded in the same manner as in Example 3 except that the temperature of the injection cylinder nozzle was 275 ° C., the injection pressure was 115 MPa, and the holding pressure was 120 MPa. A blade bending test was performed.
- Comparative Example 5 Using the composite forming material of Comparative Example 2, a fan was injection molded in the same manner as in Example 3 except that the holding pressure was 60 MPa, and a fracture strength test and a blade bending test were performed.
- Table 3 and FIG. 4 show the results of the breaking strength test of the fan manufactured in Example 3, Comparative Example 4 and Comparative Example 5 and the bending test of the blade cut out from the fan.
- Example 3 As is clear from Table 3 and FIG. 4, the strength of the fan of Example 3 manufactured by injection molding using the composite forming material of Example 1 was close to that of the fan of Comparative Example 4.
- the content of the glass fiber contained in the fan of Example 3 is half that of Comparative Example 4
- the content of the short glass fiber is half that of Comparative Example 5
- the content of the entire reinforcing material in the fan is that of Example 3, Comparative.
- a clear synergistic effect was found in improving the strength of the fan by mixing glass fibers and short glass fibers.
- the fan containing only the glass fiber of Comparative Example 4 as a reinforcing material is difficult to uniformly disperse the glass fiber in the mold at the time of injection molding. Even if it is the same product, the strength varies depending on the location, but in the fan of Example 3, the glass fibers are uniformly dispersed in the mold, while the short glass fibers are supplemented between the glass fibers. Therefore, it is considered that the dispersibility of the glass fiber and the short glass fiber in the fan has increased.
- the bending strength of the blade is weaker in Comparative Example 4 including only glass fibers than in Comparative Example 5 including only short glass fibers.
- the blade cut out from the fan of Example 3 showed almost the same strength as the blade of the fan of Comparative Example 5 containing only short glass fibers as a reinforcing material.
- the blade of Example 3 is considered to be because, when the composite forming material of Example 1 was injection-molded in a mold, the short glass fibers contained in the composite forming material were uniformly filled to the fine part of the mold. It is done.
- X-ray CT imaging Next, in order to confirm whether the improvement in the strength of the blade of the fan produced in Example 3 and Comparative Example 4 was due to the short glass fibers being filled, X-ray CT imaging of the blade was performed.
- the blade cut out from the fan produced in Example 3 was fixed to the sample holder at the base side of the blade main body of the blade using an adhesive.
- FIG. 5 shows the blade fixed to the sample holder, and the tip portion surrounded by a circle is photographed. Photographing was performed using a SkyScan 1172 Micro-CT (manufactured by Bruker micro) according to the following procedure.
- the scan software “SKYSCAN- ⁇ CT” was activated, and after aging the X-ray source, a sample holder to which a blade as a measurement sample was fixed was fixed in the chamber.
- the resolution (number of pixels) of the X-ray image acquisition camera is set to Standard resolution (2000 ⁇ 1048 pixels), the holder is slowly rotated up to 180 degrees, and a transmission image is taken every time it is rotated by 0.6 degrees. Scanning was done.
- a software “Nrecon” was used to reconstruct a tomogram from the obtained transmission image.
- a transmission 3D image was obtained from the tomographic image by 3D display software “CTVox”.
- the fan blade produced in Comparative Example 4 was also subjected to X-ray CT imaging in the same procedure as described above.
- FIG. 6A shows a transmission 3D image of the tip portion of the blade cut out from the fan manufactured in Example 3 and FIG. 6B in Comparative Example 4.
- FIG. 6A shows a transmission 3D image of the tip portion of the blade cut out from the fan manufactured in Example 3 and FIG. 6B in Comparative Example 4.
- FIG. 6A shows a transmission 3D image of the tip portion of the blade cut out from the fan manufactured in Example 3 and FIG. 6B in Comparative Example 4.
- FIG. As is apparent from the photograph, the glass short fiber was clearly confirmed in the blade of Example 3 even at the most distal end portion of the blade extended from the fan (the thickness of the thinnest portion was about 0.5 mm). On the other hand, almost no glass fiber was confirmed in the blade of Comparative Example 4.
- Example 4 The composite forming material produced in Example 2 was injection molded into a mold for producing a semiconductor burn-in socket (hereinafter sometimes simply referred to as “socket”).
- the injection molding machine was an HXF33J8 model manufactured by NING BO HAI XING PLASTICS MACHINERY MANUFACTURERING CO., LTD., Except that the temperature of the injection cylinder nozzle was 380 ° C.
- Example 3 The injection molding was performed in the same procedure.
- FIG. 7 is a photograph of the obtained socket.
- the portion surrounded by ⁇ is a lattice-shaped fine portion, the size is 7 ⁇ 7 mm, and the thickness is 2 mm. Further, the width of the line constituting the lattice-shaped fine portion was about 0.1 mm, and the size of the lattice was 0.2 ⁇ 0.25 mm.
- FIG. 8 shows a grid-like portion fixed to the sample holder. Photographing was performed in the same procedure as in Example 3 to obtain a transmitted 3D image of 2 ⁇ 2 mm approximately at the center of the lattice portion.
- Comparative Example 6 (Comparative Example 6) Except that the composite forming material of Comparative Example 3 was used and the temperature of the injection cylinder nozzle was 380 ° C., the socket was injection molded in the same procedure as in Comparative Example 4, and X-ray CT imaging was performed in the same procedure as in Example 3. The transmission 3D image of 2 ⁇ 2 mm at the approximate center of the lattice portion was obtained.
- FIG. 9A is a photograph of a transmission 3D image obtained in Example 4 and FIG. As is apparent from the photograph, it was clearly confirmed that the socket of Example 4 was filled with the short glass fibers up to the center of the lattice portion. On the other hand, in the socket of Comparative Example 6, only a few glass fiber pieces that were thought to have been cut and refined during kneading and / or injection molding were confirmed, and the lattice-like portions were not sufficiently filled with glass fibers. It was.
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Abstract
Description
(2)前記平均繊維径が7~20μmの繊維状の補強材が、ガラス繊維であることを特徴とする上記(1)に記載の複合形成材料。
(3)前記ガラス短繊維が、シランカップリング剤、潤滑剤及び皮膜形成材から選択される少なくとも1種で表面処理されたものであることを特徴とする上記(1)又は(2)に記載の複合形成材料。
(4)前記ガラス繊維が、シランカップリング剤、潤滑剤及び皮膜形成材から選択される少なくとも1種で表面処理されたものであることを特徴とする上記(2)又は(3)に記載の複合形成材料。
(5)熱可塑性樹脂、平均繊維径が1~7μmで混練前の繊維長が300~1000μmのガラス短繊維及び平均繊維径が7~20μmの繊維状の補強材を含む複合形成材料であって、前記補強材の内、少なくともガラス短繊維が、溶融した熱可塑性樹脂の温度を基準に-150~+50℃に加熱してから溶融した熱可塑性樹脂に投入したものであることを特徴とする複合形成材料。
(6)前記複合形成材料が、射出成形用であることを特徴とする上記(1)~(5)の何れか一に記載の複合形成材料。
(7)上記(1)~(6)の何れか一に記載の複合形成材料を射出成形して作製した射出成形品。
(8)熱可塑性樹脂、平均繊維径が1~7μmで混練前の繊維長が300~1000μmのガラス短繊維及び平均繊維径が7~20μmの繊維状の補強材を含む複合形成材料の製造方法において、前記補強材の内、少なくともガラス短繊維を、溶融した熱可塑性樹脂の温度を基準に-150~+50℃に加熱してから溶融した熱可塑性樹脂に投入することを特徴とする複合形成材料の製造方法。
(9)前記平均繊維径が7~20μmの繊維状の補強材が、ガラス繊維であることを特徴とする上記(8)に記載の複合形成材料の製造方法。
(ガラス短繊維1の作製)
先ず、遠心法により製造されたガラス短繊維(平均繊維径:約3.6μm)に、バインダースプレーノズルよりシランカップリング剤及び皮膜形成剤を含む溶液を噴霧することにより表面処理を行った。シランカップリング剤はエポキシシランカップリング剤Z4060(東レ・ダウコーニング社製)、皮膜形成剤にはエポキシフィルムフォーマEM-058(アデカ社製)を用いた。この時、ガラス短繊維に対する重量百分率は、エポキシシランカップリング剤が0.24wt%、皮膜形成剤が2.4wt%であった。この後、ガラス短繊維を150℃で1時間乾燥させた後、カッタミルで平均繊維長850μmに解砕処理した。
押出成形機として同方向二軸混練押出機ZE40A((φ43 L/D=40)、ベルストルフ社製)、計量装置として重量式スクリューフィーダS210(K-トロン社製)を用い、溶融したポリブチレンテレフタレート(PBT、ポリプラスチックス社製 XFR4840)に、ペレット中の比率が30wt%となるようにガラス短繊維を添加し混練した。混練条件は、スクリュー回転数120rpm、樹脂圧力0.9Mpa、電流36A、フィード量15Kg/hrで行った。また、混練時のPBTの樹脂温度は250℃、ガラス短繊維は25℃で添加した。混練後は、スクリューの排出ディスク回転によりバレルの先端に設けられたダイスから押出されたストランド(棒状ライン)をストランドバスで冷却してからストランドカッターで切断して、ガラス短繊維1含有ペレットを作製した。
上記の手順で作製したガラス短繊維1含有ペレット、及びガラス繊維(平均繊維径:13μm)を30wt%含有するペレット(日本ポリプラスチック製6840GF30)を1:1の割合で混合し、タンブラーで回転数30rpm、10分間、ドライブレンドすることで複合形成材料を作製した。
上記ガラス繊維を30wt%含有するペレット(日本ポリプラスチック製6840GF30)を比較例1の複合形成材料とした。
上記で作製したガラス短繊維1含有ペレットを比較例2の複合形成材料とした。
シランカップリング剤として、アミノシランカップリング剤S330(チッソ社製)を用い、皮膜形成剤を用いなかった以外は、ガラス短繊維1と同様の手順でガラス短繊維2を作製した。
押出成形機として同方向二軸混練押出機 BT-40-S2-36-L型((φ39 L/D=36)、プラスチック工学研究所社製)を用い、計量装置として重量式スクリューフィーダS210(K-トロン社製)を用い、溶融したポリエーテルイミド(PEI、SABICイノベーティブプラスチックス社製 Ultem 1000)に、ペレット中の比率が20wt%となるようにガラス短繊維を添加し混練した。混練条件は、スクリュー回転数200rpm、樹脂圧力0.6Mpa、電流26~27A、フィード量3.75Kg/hrで行った。また、混練時のPEIの樹脂温度は380℃、ガラス短繊維は25℃で添加した。混練後は、ガラス短繊維1含有ペレットと同様の手順でペレットを作製した。
作製したガラス短繊維2含有ペレット、及びガラス繊維(平均繊維径:13μm)を20wt%含有するペレット(SABICイノベーティブプラスチックス社製 Ultem 2200)を1:1の割合で混合し、タンブラーで回転数30rpm、10分間、ドライブレンドすることで複合形成材料を作製した。
ガラス繊維を20wt%含有するペレット(SABICイノベーティブプラスチックス社製 Ultem 2200)を比較例3とした。
(実施例3)
<冷却モジュール用ターボファンの作製>
上記実施例1で作製した複合形成材料を、図1に示す形状の冷却モジュール用ターボファン(以下、単に「ファン」と記載することもある。)を製造するための金型に射出成形を行った。射出成形機は、▲チョ▼波海星塑料机械制造有限公司(NING BO HAI XING PLASTICS MACHINERY MANUFACTURING CO., LTD)のHXF33J8モデルを用い、複合形成材料を金型に充填する際の射出シリンダーノズルの温度は265℃、射出圧力は100MPa、射出速度は55/mm s-1、保持圧力は80MPaの条件で射出成形を行った。得られたファンの半径Rは23mm、ブレードが形成されている部分1の高さ(ファン全体の厚さ)は9mm、個々のブレードの厚さ2は約0.5mmであった。
次に、上記実施例3で作製したファンの破壊強度試験を行った。図2は、試験機の治具でファンに荷重をかけている様子を示す写真である。試験機には、島津製作所社製の万能試験機 型式AG-1を用い、直径20mmの円型破壊用治具で、ヘッドスピード1.0mm/minの条件で破壊強度試験を行った。ファンの破壊強度は、ファンの外縁部分に荷重をかけて破壊したときの最大となる荷重(最大点試験力/N)で評価した。評価には、同一条件で作製したファン6個を用いた。
次に、上記実施例3で作製したファンからブレードを切り出して、個々のブレードの曲げ試験を行った。図3は、試験機の治具でブレードに荷重をかけている様子を示す写真である。試験機には、島津製作所社製の万能試験機 型式AG-1を用い、マイナス型の曲げ用治具で、支点間距離6.0mm、ヘッドスピード1.0mm/minの条件で曲げ試験を行った。ブレードの曲げ強度は、ブレードの外周部から5mm内側の位置に荷重をかけて曲げ、最大となった荷重(最大点試験力/N)で評価した。評価には、同じファンから切り出したブレード19個を用いた。
比較例1の複合形成材料を用いて、射出シリンダーノズルの温度を275℃、射出圧力を115MPa、保持圧力を120MPaとした以外は、実施例3と同様にファンを射出成形し、破壊強度試験及びブレード曲げ試験を行った。
比較例2の複合形成材料を用いて、保持圧力を60MPaとした以外は、実施例3と同様にファンを射出成形し、破壊強度試験及びブレード曲げ試験を行った。
次に、実施例3及び比較例4で作製したファンのブレードの強度の向上が、ガラス短繊維が充填されたためであるか確認するため、ブレードのX線CT撮影を行った。先ず、上記実施例3で作製したファンから切り出したブレードを、ブレードのファン本体の付け根側の部分を試料ホルダに接着剤を用いて固定した。図5は、試料ホルダに固定したブレードを示し、○で囲ってある先端部分を撮影した。撮影は、SkyScan 1172 Micro-CT(Bruker micro社製)を用い以下の手順で行った。
(1)スキャンソフトウェアである「SKYSCAN-μCT」を起動し、X線源のエージングを実行後、測定試料であるブレードを固定した試料ホルダを、チャンバー内に固定した。
(2)X線イメージ取得用カメラの解像度(ピクセル数)をStandard resolution(2000×1048 pixel)に設定し、ホルダを180度までゆっくり回転させ、0.6度回転する毎に透過イメージを撮影することでスキャニングを行った。
(3)ソフトウェア「Nrecon」を使用し、得られた透過イメージから断層像を再構成した。
(4)3D表示用ソフトウェア「CTVox」により、断層像から透過3D像を得た。
比較例4で作製したファンのブレードについても、上記と同様の手順でX線CT撮影を行った。
(実施例4)
上記実施例2で作製した複合形成材料を、半導体バーンインソケット(以下、単に「ソケット」と記載する場合がある。)を作製するための金型に射出成形した。射出成形機は、▲チョ▼波海星塑料机械制造有限公司(NING BO HAI XING PLASTICS MACHINERY MANUFACTURING CO., LTD)のHXF33J8モデルを用い、射出シリンダーノズルの温度を380℃とする以外は、実施例3と同様の手順で射出成形を行った。図7は得られたソケットの写真で、○で囲んである部分は格子状の微細部で、サイズは7×7mm、厚さ2mmであった。また、格子状の微細部を構成する線の幅は約0.1mm、格子のサイズは0.2×0.25mmであった。
次に、実施例4で作製したソケット中央の格子状部分を切り出し、試料ホルダに接着剤を用いて固定した。図8は、試料ホルダに固定した格子状部分を示す。撮影は、実施例3と同様の手順で行い、格子状部分のほぼ中央の2×2mmの透過3D像を得た。
比較例3の複合形成材料を用い、射出シリンダーノズルの温度を380℃とした以外は、比較例4と同様の手順でソケットを射出成形し、実施例3と同様の手順でX線CT撮影を行い、格子状部分のほぼ中央の2×2mmの透過3D像を得た。
Claims (9)
- 熱可塑性樹脂、平均繊維径が1~7μmで混練前の繊維長が300~1000μmのガラス短繊維、及び平均繊維径が7~20μmの繊維状の補強材を含むことを特徴とする複合形成材料。
- 前記平均繊維径が7~20μmの繊維状の補強材が、ガラス繊維であることを特徴とする請求項1に記載の複合形成材料。
- 前記ガラス短繊維が、シランカップリング剤、潤滑剤及び皮膜形成材から選択される少なくとも1種で表面処理されたものであることを特徴とする請求項1又は2に記載の複合形成材料。
- 前記ガラス繊維が、シランカップリング剤、潤滑剤及び皮膜形成材から選択される少なくとも1種で表面処理されたものであることを特徴とする請求項2又は3に記載の複合形成材料。
- 熱可塑性樹脂、平均繊維径が1~7μmで混練前の繊維長が300~1000μmのガラス短繊維、及び平均繊維径が7~20μmの繊維状の補強材を含む複合形成材料であって、前記補強材の内、少なくともガラス短繊維が、溶融した熱可塑性樹脂の温度を基準に-150~+50℃に加熱してから溶融した熱可塑性樹脂に投入したものであることを特徴とする複合形成材料。
- 前記複合形成材料が、射出成形用であることを特徴とする請求項1~5の何れか一項に記載の複合形成材料。
- 請求項1~6の何れか一項に記載の複合形成材料を射出成形して作製した射出成形品。
- 熱可塑性樹脂、平均繊維径が1~7μmで混練前の繊維長が300~1000μmのガラス短繊維、及び平均繊維径が7~20μmの繊維状の補強材を含む複合形成材料の製造方法において、前記補強材の内、少なくともガラス短繊維を、溶融した熱可塑性樹脂の温度を基準に-150~+50℃に加熱してから溶融した熱可塑性樹脂に投入することを特徴とする複合形成材料の製造方法。
- 前記平均繊維径が7~20μmの繊維状の補強材が、ガラス繊維であることを特徴とする請求項8に記載の複合形成材料の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14782962.6A EP2985319B1 (en) | 2013-04-09 | 2014-03-18 | Composite molding material, its use to produce an extrusion molded article, and production method for said composite molding material |
ES14782962T ES2739632T3 (es) | 2013-04-09 | 2014-03-18 | Material de moldeo de material compuesto, su uso para producir un artículo moldeado por extrusión y método de producción para dicho material de moldeo de material compuesto |
KR1020157030819A KR20150138284A (ko) | 2013-04-09 | 2014-03-18 | 복합 형성 재료, 사출 성형품 및 복합 형성 재료의 제조 방법 |
CN201480020125.9A CN105102545B (zh) | 2013-04-09 | 2014-03-18 | 复合形成材料、射出成形品及复合形成材料的制造方法 |
US14/782,371 US10066085B2 (en) | 2013-04-09 | 2014-03-18 | Composite molding material, injection-molded article, and method for manufacturing composite molding material |
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JP2016112835A (ja) * | 2014-12-17 | 2016-06-23 | Jfeケミカル株式会社 | 熱可塑性樹脂の加熱方法 |
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JP5437514B1 (ja) * | 2013-04-09 | 2014-03-12 | 鉦則 藤田 | 複合形成材料、射出成形品及び複合形成材料の製造方法 |
JP2016117834A (ja) * | 2014-12-22 | 2016-06-30 | 鉦則 藤田 | 無機材料の表面改質用組成物、表面改質された無機材料、表面改質用組成物を含む複合形成材料、該複合形成材料の成形品、複合形成材料の製造方法、及びカリックスアレーン含有組成物 |
EP3309211B1 (en) * | 2016-10-17 | 2018-12-12 | Borealis AG | Fiber reinforced polypropylene composite |
US11524428B2 (en) * | 2017-09-19 | 2022-12-13 | Masanori Fujita | Cleaning agent for molding-machine cleaning and cleaning method |
JP7300273B2 (ja) * | 2019-02-04 | 2023-06-29 | 株式会社ムーンスター | 微細径繊維を用いた防滑履物底 |
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EP2985319A1 (en) | 2016-02-17 |
JP5437514B1 (ja) | 2014-03-12 |
EP2985319B1 (en) | 2019-05-22 |
CN105102545A (zh) | 2015-11-25 |
CN105102545B (zh) | 2019-01-22 |
TWI547514B (zh) | 2016-09-01 |
TW201446854A (zh) | 2014-12-16 |
EP2985319A4 (en) | 2016-07-13 |
ES2739632T3 (es) | 2020-02-03 |
KR20150138284A (ko) | 2015-12-09 |
US10066085B2 (en) | 2018-09-04 |
US20160053092A1 (en) | 2016-02-25 |
JP2014201712A (ja) | 2014-10-27 |
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