WO2013069519A1 - 風向制御板、及び風向制御板の製造方法 - Google Patents
風向制御板、及び風向制御板の製造方法 Download PDFInfo
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- WO2013069519A1 WO2013069519A1 PCT/JP2012/078203 JP2012078203W WO2013069519A1 WO 2013069519 A1 WO2013069519 A1 WO 2013069519A1 JP 2012078203 W JP2012078203 W JP 2012078203W WO 2013069519 A1 WO2013069519 A1 WO 2013069519A1
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- terephthalate resin
- polybutylene terephthalate
- wind direction
- direction control
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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
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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
- B29C45/0013—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor using fillers dispersed in the moulding material, e.g. metal particles
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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
- B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
- B29C2045/0027—Gate or gate mark locations
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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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
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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
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/006—PBT, i.e. polybutylene terephthalate
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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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
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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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24777—Edge feature
Definitions
- the present invention relates to a wind direction control plate composed of a polybutylene terephthalate resin composition and a method for manufacturing the wind direction control plate.
- Polybutylene terephthalate resin is excellent in mechanical properties, electrical properties, heat resistance, chemical resistance, and solvent resistance, so it is widely used as an engineering plastic for various applications such as automotive parts and electrical / electronic parts. ing.
- Patent Document 1 describes a fluidity improving method in which a combination of a specific thermoplastic resin and a compound having a specific at least three functional groups is melt-mixed.
- the fluidity improving effect described in Patent Document 1 is insufficient, and the mechanical properties tend to decrease.
- Patent Document 2 by using a polybutylene terephthalate resin and a polyester resin or an amorphous resin having a crystallization rate slower than that of the polybutylene terephthalate resin, it has excellent impact resistance, chemical resistance, and gloss. A method for providing a molded article having a good surface appearance has been reported. However, the material described in Patent Document 2 has low mechanical properties. Further, in order to obtain a good appearance, it is necessary to mold at a high mold temperature.
- Patent Document 3 also proposes a method for improving fluidity by blending a specific olefin copolymer with polybutylene terephthalate resin.
- this method has a problem that the rigidity and strength of the resin molded body are lowered.
- wind direction control plates used in air conditioners and the like are required to have an excellent appearance because they are used in parts that are touched by human eyes, and the position of the gate when manufacturing this by injection molding is also considered from the viewpoint of design. It will be limited to the edge part of a control board. Furthermore, it is required to form a gate from only one point, avoiding the provision of a plurality of gates so that welds do not occur in the design portion. For this reason, high fluidity
- the polybutylene terephthalate resin composition is suitable as a raw material for the wind direction control plate. Has not been developed.
- the present invention has been made in order to solve the above-mentioned problems, and its object is to mold a polybutylene terephthalate resin composition having high fluidity at the time of melting, and to provide a wind direction control plate having excellent appearance and mechanical properties. Is to provide.
- the inventors of the present invention have made extensive studies to solve the above problems. As a result, a polybutylene terephthalate resin composition containing polybutylene terephthalate resin, polyethylene terephthalate resin and glass fiber was used, and the melt viscosity of the resin composition at a temperature of 260 ° C. and a shear rate of 1000 sec ⁇ 1 was 0.10 kPa or more.
- the length in the longitudinal direction is a plate shape that is twice or more the length in the short direction, the thickness is 0.7 mm or more and 4 mm or less, and the end in the longitudinal direction or its It has been found that even a wind direction control plate having a gate portion in the vicinity thereof is a wind direction control plate having an excellent appearance and excellent mechanical properties such as bending properties, and the present invention has been completed. More specifically, the present invention provides the following.
- the polybutylene terephthalate resin composition has a flexural modulus measured by a method according to ISO 178 of 15,000 MPa or more, a bending strength of 170 MPa or more, and a Charpy impact value measured by a method according to ISO 179 / 1eA.
- the wind direction control board as described in (1) whose is 7 kJ / m ⁇ 2 > or more.
- the mass ratio of the polybutylene terephthalate resin and the polyethylene terephthalate resin is 4/6 or more and 7/3.
- the glass fiber content relative to this is 80 parts by mass or more and 140 parts by mass or less, and the glass Inorganic fillers other than fibers are further included, the inorganic filler content is 40 parts by mass or less, the glycerin fatty acid partial ester is further included, and the glycerin fatty acid partial ester content is 3 parts by mass or less (1 ) Or the wind direction control plate according to (2).
- the gate Extending from both ends in the longitudinal direction and having a rotating shaft portion for transmitting driving force to the wind direction control plate, the gate is present on one of the rotating shaft portions or at an axial end portion.
- the wind direction control board according to any one of (1) to (4).
- the manufacturing method of the wind direction control board which adjusts 10 ⁇ 3 > / second or more and 1 * 10 ⁇ 6 > / second or less, a holding pressure of 30 MPa or more and 100 MPa or less, and mold temperature to 100 degrees C or less.
- the present invention is a wind direction control plate having excellent appearance and mechanical properties despite being molded using a polybutylene terephthalate resin composition having high fluidity when melted.
- the wind direction control board of this invention is comprised from a specific polybutylene terephthalate resin composition.
- the specific polybutylene terephthalate resin composition includes polybutylene terephthalate resin, polyethylene terephthalate resin, and glass fiber.
- the polybutylene terephthalate resin includes a dicarboxylic acid component containing at least terephthalic acid or an ester-forming derivative thereof (C 1-6 alkyl ester, acid halide, etc.) and an alkylene glycol (1,4-butane having at least 4 carbon atoms). Diol) or a polybutylene terephthalate resin obtained by polycondensation with a glycol component containing an ester-forming derivative thereof (acetylated product or the like).
- the polybutylene terephthalate resin is not limited to a homopolybutylene terephthalate resin, but may be a copolymer containing 60 mol% or more (particularly 75 mol% or more and 95 mol% or less) of a butylene terephthalate unit.
- the amount of terminal carboxyl groups of the polybutylene terephthalate resin is not particularly limited as long as the object of the present invention is not impaired.
- the amount of terminal carboxyl groups of the polybutylene terephthalate resin is preferably 30 meq / kg or less, and more preferably 25 meq / kg or less.
- the intrinsic viscosity of the polybutylene terephthalate resin is not particularly limited as long as the object of the present invention is not impaired.
- the intrinsic viscosity (IV) of the polybutylene terephthalate resin is preferably 0.60 dL / g or more and 1.2 dL / g or less. More preferably, it is 0.65 dL / g or more and 0.9 dL / g or less.
- the resulting polybutylene terephthalate resin composition has particularly excellent moldability.
- the intrinsic viscosity can also be adjusted by blending polybutylene terephthalate resins having different intrinsic viscosities.
- a polybutylene terephthalate resin having an intrinsic viscosity of 0.9 dL / g is prepared by blending a polybutylene terephthalate resin having an intrinsic viscosity of 1.0 dL / g and a polybutylene terephthalate resin having an intrinsic viscosity of 0.7 dL / g. Can do.
- the intrinsic viscosity (IV) of the polybutylene terephthalate resin can be measured, for example, in o-chlorophenol at a temperature of 35 ° C.
- examples of the dicarboxylic acid component (comonomer component) other than terephthalic acid and its ester-forming derivatives include, for example, isophthalic acid, phthalic acid, 2,6-naphthalenedicarboxylic acid, 4,4′-di C 8-14 aromatic dicarboxylic acids such as carboxydiphenyl ether; C 4-16 alkane dicarboxylic acids such as succinic acid, adipic acid, azelaic acid and sebacic acid; C 5-10 cycloalkane dicarboxylic acids such as cyclohexane dicarboxylic acid Ester-forming derivatives of these dicarboxylic acid components (C 1-6 alkyl ester derivatives, acid halides, etc.). These dicarboxylic acid components can be used alone or in combination of two or more.
- C 8-12 aromatic dicarboxylic acids such as isophthalic acid
- C 6-12 alkanedicarboxylic acids such as adipic acid, azelaic acid, and sebacic acid are more preferable.
- glycol components (comonomer components) other than 1,4-butanediol include, for example, ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butylene glycol, hexamethylene glycol, neopentyl.
- C 2-10 alkylene glycol such as glycol and 1,3-octanediol; polyoxyalkylene glycol such as diethylene glycol, triethylene glycol and dipropylene glycol; alicyclic diol such as cyclohexanedimethanol and hydrogenated bisphenol A; bisphenol A, aromatic diols such as 4,4′-dihydroxybiphenyl; ethylene oxide 2 mol adduct of bisphenol A, propylene oxide 3 mol of bisphenol A An adduct, alkylene oxide adducts of C 2-4 of bisphenol A; or ester-forming derivatives of these glycols (acetylated, etc.).
- These glycol components can be used alone or in combination of two or more.
- C 2-6 alkylene glycol such as ethylene glycol and trimethylene glycol
- polyoxyalkylene glycol such as diethylene glycol
- alicyclic diol such as cyclohexanedimethanol
- Examples of the comonomer component that can be used in addition to the dicarboxylic acid component and the glycol component include 4-hydroxybenzoic acid, 3-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, 4-carboxy-4′-hydroxybiphenyl, and the like.
- Polyethylene terephthalate resin is a polycondensation of terephthalic acid or its ester-forming derivatives (C 1-6 alkyl esters, acid halides, etc.) and ethylene glycol or its ester-forming derivatives (acetylates, etc.) according to known methods. It is a polyester resin obtained.
- the polyethylene terephthalate resin may be modified by copolymerizing a small amount of a modifying component that gives a repeating unit other than the terephthaloyl unit and the ethylenedioxy unit within a range not impairing the object of the present invention.
- the amount of the repeating unit other than the terephthaloyl unit and the ethylenedioxy unit contained in the polyethylene terephthalate resin is preferably less than 4 mol%, more preferably 3 mol% or less, and more preferably 2 mol% or less in all repeating units of the polyethylene terephthalate resin. Is more preferable.
- the mass ratio of polybutylene terephthalate resin to polyethylene terephthalate resin is preferably 4/6 or more and 7/3 or less. If the mass ratio is 4/6 or more, it is preferable for the reason that the surface appearance is good, and if it is 7/3 or less, it is preferable for the reason that the molding cycle is excellent. A more preferable range of the mass ratio is 5/5 or more and 6.5 / 3.5 or less.
- Glass fiber any known glass fiber is preferably used, and the glass fiber diameter, cylindrical shape, saddle-shaped cross-sectional shape, oval cross-sectional shape, etc., or the length when used for the production of chopped strands, rovings, etc. It does not depend on the sheath glass cutting method.
- the type of glass is not limited, but E glass or corrosion resistant glass containing a zirconium element in the composition is preferably used in terms of quality.
- the fiber length and fiber diameter of the glass fiber may be within the general range.
- a fiber having a fiber length of 2.0 mm to 6.0 mm and a fiber diameter of 9.0 ⁇ m to 14.0 ⁇ m can be used.
- glass fiber surface-treated with an organic treatment agent such as an aminosilane compound or an epoxy compound is particularly preferably used.
- an organic treatment agent such as an aminosilane compound or an epoxy compound is particularly preferably used.
- a glass fiber of 1% by mass or more is particularly preferably used. Any known aminosilane compounds and epoxy compounds used for such glass fibers can be preferably used.
- the glass fiber content in the resin composition is not particularly limited, but when the total content of the polybutylene terephthalate resin and the polyethylene terephthalate resin is 100 parts by mass, the glass fiber content is 80 masses. It is preferable that the content of the glass fiber is adjusted so as to be at least 140 parts by mass. If the glass fiber content is 80 parts by mass or more, it is preferable because of high rigidity, and if it is 140 parts by mass or less, it is preferable because of good fluidity during molding. A more preferable glass fiber content is 90 parts by mass or more and 130 parts by mass or less.
- the polybutylene terephthalate resin composition preferably contains an inorganic filler other than fatty acid partial ester of polyhydric alcohol and glass fiber as a fluidity improver.
- Fatty acid partial esters of polyhydric alcohols include polyhydric alcohols such as ethylene glycol, propylene glycol, glycerin, polyglycerin, pentaerythritol and caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, 12-hydroxystearin Acids, arachidic acid, behenic acid and the like, usually saturated fatty acids having 7 to 21 carbon atoms, decenoic acid, undecenoic acid, dodecenoic acid, tetradecenoic acid, oleic acid, erucic acid, linoleic acid, linolenic acid, ricinoleic acid, etc. It is preferably a partial ester with an unsaturated fatty acid. In the present invention, it is particularly preferable to use a fatty acid partial ester of glycerin.
- a fatty acid partial ester of a polyhydric alcohol because the fluidity at the time of melting of the polybutylene terephthalate resin composition is further increased.
- the fatty acid partial ester of a polyhydric alcohol used in the present invention has a hydroxyl value measured in accordance with Oil Chemical Society method 2,4,9,2-71 hydroxyl value (pyridine / acetic anhydride method) of 200 or more and 1000 The following are preferred. If the said hydroxyl value is 200 or more, it exists in the tendency for the effect of a fluid improvement to increase more. On the other hand, if the hydroxyl value is too large, the reaction between the fatty acid partial ester of polyhydric alcohol and polybutylene terephthalate will proceed excessively, resulting in a decrease in the molecular weight of the polybutylene terephthalate resin, mechanical properties, heat resistance, and chemical resistance. There is a risk of deteriorating such excellent characteristics.
- the content of the fatty acid partial ester of the polyhydric alcohol in the resin composition is not particularly limited, but a preferable content is 3 parts by mass or less. If the content of the fatty acid partial ester of the polyhydric alcohol is 3 parts by mass or less, it is preferable because both mechanical strength and fluidity can be achieved. A more preferable content is 0.1 parts by mass or more and 2.0 parts by mass or less.
- inorganic fillers other than glass fibers examples include fibrous fillers other than glass fibers, powder fillers, and plate fillers.
- fibrous fillers other than glass fiber asbestos fiber, silica fiber, silica-alumina fiber, alumina fiber, zirconia fiber, boron nitride fiber, silicon nitride fiber, boron fiber, potassium titanate fiber, stainless steel, aluminum, titanium
- metal fibrous materials such as copper and brass.
- silica silica, quartz powder, glass beads, milled glass fiber, glass balloon, glass powder, calcium silicate, aluminum silicate, kaolin, talc, clay, diatomaceous earth, wollastonite and other silicates, oxidation Metal oxides such as iron, titanium oxide, zinc oxide, antimony trioxide and alumina, carbonates of metals such as calcium carbonate and magnesium carbonate, sulfates of metals such as calcium sulfate and barium sulfate, other ferrites, silicon carbide, Examples thereof include silicon nitride, boron nitride and various metal powders.
- examples of the plate-like filler include mica, glass flakes, various metal foils and the like.
- a granular filler or a plate-like filler as an inorganic filler other than glass fiber.
- talc or mica is preferably used, and talc having a particle size of 10 ⁇ m or more and 30 ⁇ m or less is most preferable for improving the appearance.
- the content of the inorganic filler other than the glass fiber in the resin composition is not particularly limited, but the preferable content is 40 parts by mass or less. If the said content is 40 mass parts or less, it is preferable for the reason of coexistence of surface appearance and mechanical strength. A more preferable content is 30 parts by mass or less. In the present invention, it is preferable to use an inorganic filler other than glass fiber from the viewpoint that the strand during extrusion is more stable and pelletization becomes easier than using only glass fiber.
- the polybutylene terephthalate resin composition may contain other components other than the fatty acid partial ester of the polyhydric alcohol and inorganic filler other than the glass fiber as long as the effects of the present invention are not impaired.
- additives such as a nucleating agent, a pigment, an antioxidant, a plasticizer, a lubricant, a release agent, and a flame retardant may be added to the polybutylene terephthalate resin composition to impart desired characteristics.
- the phosphorus stabilizer may inhibit the reaction of the fluidity improver, and excessively. If added, the effect of increasing fluidity may not be sufficiently obtained. Therefore, in the polybutylene terephthalate resin composition of the present invention, it is preferable that the phosphorus stabilizer is kept in a very small amount or not added.
- the specific embodiment of the method for preparing the polybutylene terephthalate resin composition is not particularly limited, and the resin composition is generally prepared by a known facility and method used in the method for preparing the resin composition or its molded body. Can do. For example, necessary components can be mixed and kneaded using a single or twin screw extruder or other melt kneader to prepare pellets for molding. A plurality of extruders or other melt kneaders may be used. Moreover, all the components may be charged simultaneously from the hopper, or some components may be charged from the side feed port.
- the polybutylene terephthalate resin composition used in the present invention has high fluidity when melted.
- the melt viscosity measured under conditions of a temperature of 260 ° C. and a shear rate of 1000 sec ⁇ 1 can be adjusted to 0.10 kPa ⁇ s to 0.30 kPa ⁇ s.
- the polybutylene terephthalate resin composition used in the present invention has good bending characteristics. It can be adjusted so that the flexural modulus measured by a method according to ISO 178 is 15000 MPa or more and the bending strength is 170 MPa or more.
- the polybutylene terephthalate resin composition used in the present invention has a high Charpy impact value. It can adjust so that the Charpy impact value measured by the method based on ISO 179 / 1eA may become 7 kJ / m ⁇ 2 > or more.
- the wind direction control plate can be manufactured by an injection molding method using the polybutylene terephthalate resin composition as a raw material.
- the molding conditions in the injection molding are not particularly limited, and preferable conditions can be adopted as appropriate.
- the polybutylene terephthalate resin composition is suitable for manufacturing a wind direction control plate having the shape shown in FIG.
- the wind direction control plate 1 shown in FIG. 1 has a plate-like wind direction control unit 10, a rotation shaft unit 11 that extends from both ends in the longitudinal direction of the wind direction control unit, and transmits a driving force to the wind direction control plate 1.
- the gate part 12 which exists in the edge part of the axial direction of the one rotating shaft part 11 is provided.
- the wind direction control plate 1 will be briefly described below.
- the wind direction control unit 10 has a plate shape, and the length 1 in the short direction is at least twice the length L in the long direction. Moreover, thickness d is 0.7 mm or more and 4 mm or less.
- the surface of the wind direction control unit 10 is a design surface and is required to have a good appearance. In addition, for the purpose of matting the surface of the wind direction control unit 10, irregularities may be imparted to the cavity surface.
- Rotating shaft portion 11 is two shaft portions that extend from both ends in the longitudinal direction of wind direction control portion 10.
- the rotation shaft portion 11 is rotated by a driving force from a driving device (not shown) such as a motor to change the angle of the wind direction control unit 10 (an angle formed by a predetermined horizontal plane and the wind direction control unit).
- the gate portion 12 exists at the end portion in the axial direction of the one rotation shaft portion 11. As described above, when the gate portion 12 is present on the design surface, the appearance is deteriorated. Therefore, it is preferable that the gate portion is formed so that the gate portion is present at the end portion of the wind direction control portion 10 or in the vicinity of the end portion. As shown in FIG. 1, it is preferable that the gate portion 12 exists at the axial end portion of the rotating shaft portion 11 because it is not particularly noticeable. In addition, the gate part 12 may exist also in the edge part of the axial direction of the other rotating shaft part 11. FIG.
- the wind direction control plate 1 can be manufactured by a general injection molding method. However, by adopting the following molding conditions, the wind direction control plate 1 has a better appearance.
- the shear rate of the melted polybutylene terephthalate resin composition passing through the portion of the cavity forming the rotating shaft portion 11 having the gate portion 12 is 1 ⁇ 10 3 / sec or more and 1 ⁇ 10 6 / sec or less.
- the shear rate is higher than the lower limit, it is preferable because the surface of the mold can be satisfactorily transferred to obtain a smooth molded product surface, and the problem that the glass fiber is not lifted to the surface of the air direction control plate is preferable.
- the shear rate is lower than the above upper limit value, it is preferable because deterioration in appearance due to jetting of resin called jetting can be suppressed.
- the shear rate can be increased by increasing the injection speed, increasing the screw diameter of the molding machine, and / or decreasing the diameter of the rotating shaft.
- the holding pressure it is preferable to set to 30 MPa or more and 100 MPa or less. More preferably, it is 60 MPa or more and 80 MPa or less. If the holding pressure is 30 MPa or more, the surface appearance is good, and if it is 100 MPa or less, there is an effect that the releasability is not impaired.
- the mold temperature it is preferable to set the mold temperature to 100 ° C. or lower. More preferably, it is 40 degreeC or more and 80 degrees C or less.
- a water-cooled mold temperature controller can be used instead of a special high-temperature controller such as an oil type, the molding cycle is shortened, and a good surface is achieved. There is an effect that an appearance can be obtained.
- the polybutylene terephthalate resin composition is used, in addition to being able to provide the outstanding physical property to a resin molding as above-mentioned, the outstanding external appearance can also be provided to a molded object.
- the polybutylene terephthalate resin composition has high fluidity when melted and excellent moldability. Therefore, it is a plate shape whose length in the longitudinal direction is at least twice as long as the length in the short direction, the thickness is 0.7 mm or more and 4 mm or less, and the wind direction control is provided with a gate portion at or near the end in the longitudinal direction. Even if it is a plate, the flowability at the time of melting of the resin composition is high, so it can be easily molded without increasing the injection speed and pressure even at a low mold temperature, and the obtained wind direction control plate has an excellent appearance Have excellent physical properties.
- the length in the short direction is 5 mm or more and 100 mm or less
- the length in the longitudinal direction is twice or more the length in the short direction
- the thickness is 0.7 mm or more and 4 mm or less. Even if the wind direction control plate has a gate portion at or near the end in the longitudinal direction, the wind direction control plate has excellent appearance and excellent physical properties.
- molded is influenced by the length of the longitudinal direction of a molded object, the length of a transversal direction, etc.
- the inorganic fillers other than the glass fibers of the above materials were measured according to JIS Z8825-1 using a laser diffraction measuring device, and the value obtained by arithmetically averaging the frequency distribution was taken as the average particle diameter.
- the obtained pellet-shaped resin composition was injection-molded at a molding temperature of 260 ° C. and a mold temperature of 80 ° C. to prepare a test piece, and the bending strength and bending elastic modulus were measured according to ISO178. It was. The measurement results are shown in Table 1.
- a wind direction control plate having the shape shown in FIG. 1 was produced by an injection molding method.
- L is 130 mm
- l is 13 mm
- d is 3.2 mm.
- the rotating shaft portion is a circular cylinder with a radius of 1 mm.
- the holding pressure was set in two ways of 60 MPa and 80 MPa, and the injection speed was set in three ways: 10 mm / s, 50 mm / s and 100 mm / s. Therefore, using the polybutylene terephthalate resin composition, a wind direction control plate was produced under six molding conditions.
- the mold temperature was set to 80 ° C.
- the flow rate per unit time was calculated from the injection speed and screw diameter. The calculation results are shown in Table 2. Further, the shear rate was calculated from the flow rate and the shape of the rotating shaft (the radius of the circular circle of the cylinder).
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Abstract
Description
本発明の風向制御板は、特定のポリブチレンテレフタレート樹脂組成物から構成される。特定のポリブチレンテレフタレート樹脂組成物には、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂、ガラス繊維が含まれる。
ポリブチレンテレフタレート樹脂は、少なくともテレフタル酸又はそのエステル形成性誘導体(C1-6のアルキルエステルや酸ハロゲン化物等)を含むジカルボン酸成分と、少なくとも炭素原子数4のアルキレングリコール(1,4-ブタンジオール)又はそのエステル形成性誘導体(アセチル化物等)を含むグリコール成分とを重縮合して得られるポリブチレンテレフタレート樹脂である。ポリブチレンテレフタレート樹脂はホモポリブチレンテレフタレート樹脂に限らず、ブチレンテレフタレート単位を60モル%以上(特に75モル%以上95モル%以下)含有する共重合体であってもよい。
ポリエチレンテレフタレート樹脂は、テレフタル酸又はそのエステル形成性誘導体(C1-6アルキルエステルや酸ハロゲン化物等)、及び、エチレングリコール又はそのエステル形成性誘導体(アセチル化物等)を、公知の方法に従って重縮合して得られるポリエステル樹脂である。
ガラス繊維としては、公知のガラス繊維がいずれも好ましく用いられ、ガラス繊維径や、円筒形状、繭形断面形状、長円断面形状等の形状、あるいはチョップドストランドやロービング等の製造に用いる際の長さやガラスカットの方法にはよらない。本発明では、ガラスの種類も限定されないが、品質上、Eガラスや、組成中にジルコニウム元素を含む耐腐食ガラスが好ましく用いられる。
ポリブチレンテレフタレート樹脂組成物は、上記の必須成分以外に、流動性改善剤として、多価アルコールの脂肪酸部分エステル、ガラス繊維以外の無機充填剤を含むことが好ましい。
ポリブチレンテレフタレート樹脂組成物の調製法の具体的態様は特に限定されるものではなく、一般に樹脂組成物又はその成形体の調製法において用いられる公知の設備と方法により、樹脂組成物を調製することができる。例えば、必要な成分を混合し、1軸又は2軸の押出機又はその他の溶融混練装置を使用して混練し、成形用ペレットとして調製することができる。また、押出機又はその他の溶融混練装置は複数使用してもよい。また、全ての成分をホッパから同時に投入してもよいし、一部の成分はサイドフィード口から投入してもよい。
本発明に使用されるポリブチレンテレフタレート樹脂組成物は、溶融時の流動性が高い。ISO 11443に準拠し、温度260℃、せん断速度1000sec-1の条件で測定した溶融粘度を0.10kPa・s以上0.30kPa・s以下に調整することができる。
風向制御板は、上記のポリブチレンテレフタレート樹脂組成物を原料とする射出成形法により製造することができる。射出成形の際の成形条件は特に限定されず、適宜好ましい条件を採用可能である。
上記ポリブチレンテレフタレート樹脂組成物を用いれば、上記の通り優れた物性を樹脂成形体に付与できることに加え、優れた外観も成形体に付与することができる。また、上述の通り、上記ポリブチレンテレフタレート樹脂組成物は溶融時の流動性が高く成形性に優れる。したがって、長手方向の長さが短手方向の長さの2倍以上の板状であり、厚みが0.7mm以上4mm以下であり、長手方向の端部又はその近傍にゲート部を備える風向制御板であっても、樹脂組成物の溶融時の流動性が高いため、低い金型温度でも射出速度や圧力を上げる必要がなく容易に成形可能であり、得られた風向制御板は優れた外観、優れた物性を有する。
ポリブチレンテレフタレート樹脂(ウィンテックポリマー社製、固有粘度:0.69dL/g)
ポリエチレンテレフタレート樹脂(帝人化成社製、固有粘度:0.70dL/g)
ガラス繊維(日東紡績社製、「CSF3PE-941」)
ガラス繊維以外の無機充填剤:タルク1(日本タルク社製、「タルク3A」、平均粒径(13.8μm))
ガラス繊維以外の無機充填剤:タルク2(林化成社製、「ミクロンホワイト#5000A」、平均粒径(7.6μm))
ガラス繊維以外の無機充填剤:マイカ(クラレトレーディング社製、「スゾライトマイカ150-S」)
流動性改善剤:グリセリン脂肪酸部分エステル(理研ビタミン社製、「リケマールHC-100」、水酸基価420)
その他のグリセリン化合物:グリセリン脂肪酸エステル(理研ビタミン社製、「ポエムS-95」、水酸基価87)
酸化防止剤:ヒンダードフェノール系酸化防止剤(BASF社製、「Irganox1010」)
安定剤:リン系安定剤(クラリアントジャパン社製、「HostanoxP-EPQ」)
顔料:カーボンブラック(三菱化学社製、「MA600B」)
滑剤:多価アルコール脂肪酸エステル(日油社製、「ユニスターH476」)
上記の材料を以下の表1に示す割合(単位は質量部)でドライブレンドし、30mmφのスクリューを有する2軸押出機((株)日本製鋼所製)にホッパから供給して260℃で溶融混練し、ペレット状のポリブチレンテレフタレート樹脂組成物を得た。
得られたペレット状の樹脂組成物を、成形温度260℃、金型温度80℃で、射出成形して試験片を作製し、ISO527-1,2に準拠し、引張り強さ、及び引張り伸びの測定を行った。測定結果を表1に示した。
得られたペレット状の樹脂組成物を、成形温度260℃、金型温度80℃で、射出成形して試験片を作製し、ISO178に準拠し、曲げ強さ、及び曲げ弾性率の測定を行った。測定結果を表1に示した。
得られたペレット状の樹脂組成物を、成形温度260℃、金型温度80℃で、射出成形し、シャルピー衝撃試験片を作製し、ISO179/1eAに定められている評価基準に従い、23℃の条件で評価した。評価結果を表1に示した。
ペレット状の樹脂組成物について、東洋精機製作所社製キャピログラフ1Bを用いて、ISO11443に準拠して、炉体温度260℃、キャピラリーφ1mm×20mmLにて、剪断速度1000sec-1にて溶融粘度を測定した。測定結果を表1に示した。
上記のペレット状のポリブチレンテレフタレート樹脂組成物を原料として用い、図1に示す形状の風向制御板を射出成形法により製造した。Lは130mmであり、lは13mmであり、dは3.2mmである。また、回動軸部は半径1mmの円の円柱状である。
実施例、比較例のポリブチレンテレフタレート樹脂組成物を原料とし、風向制御板を製造して、外観の評価を目視により行った。評価の基準は以下の三段階とした。結果を表3に示した。
「◎」:ジェッティング、ガラスの浮き、及び表面の曇りが目視で観察されない場合
「○」:顕著なジェッティング及びガラスの浮きは目視で観察されないが、わずかなジェッティング及び/又は表面の曇りが目視で観察される場合
「×」:顕著なジェッティング及び/又はガラスの浮きが目視で観察される場合
10 風向制御部
11 回動軸部
12 ゲート部
Claims (6)
- 長手方向の長さが短手方向の長さの2倍以上の板状であり、
厚みが0.7mm以上4mm以下であり、
ポリブチレンテレフタレート樹脂と、ポリエチレンテレフタレート樹脂と、ガラス繊維とを含み、温度260℃、せん断速度1000sec-1での溶融粘度が0.10kPa・s以上0.30kPa・s以下であるポリブチレンテレフタレート樹脂組成物を、長手方向の端部又はその近傍のゲートから射出成形してなる風向制御板。 - 前記ポリブチレンテレフタレート樹脂組成物は、ISO 178に準拠する方法で測定した曲げ弾性率が15000MPa以上、曲げ強度が170MPa以上であり、
ISO 179/1eAに準拠する方法で測定したシャルピー衝撃値が7kJ/m2以上である請求項1に記載の風向制御板。 - 前記ポリブチレンテレフタレート樹脂組成物は、前記ポリブチレンテレフタレート樹脂と前記ポリエチレンテレフタレート樹脂との質量比(ポリブチレンテレフタレート樹脂の含有量/ポリエチレンテレフタレート樹脂の含有量)が4/6以上7/3以下であり、
前記ポリブチレンテレフタレート樹脂の含有量と前記ポリエチレンテレフタレート樹脂の含有量の合計を100質量部とした時、これに対する前記ガラス繊維の含有量が80質量部以上140質量部以下であり、
前記ガラス繊維以外の無機充填剤をさらに含み、前記無機充填剤の含有量が40質量部以下であり、
多価アルコールの脂肪酸部分エステルをさらに含み、前記脂肪酸部分エステルの含有量が3質量部以下である請求項1又は2に記載の風向制御板。 - 前記無機充填剤は、粒径が10μm以上30μm以下のタルクである請求項3に記載の風向制御板。
- 前記長手方向の両端からそれぞれ延び、駆動力を風向制御板に伝達するための回動軸部を備え、
前記ゲートは、一方の前記回動軸部上又は軸方向の端部に存在する請求項1から4のいずれかに記載の風向制御板。 - 請求項5に記載の風向制御板を射出成形で製造する方法であって、
キャビティにおける、前記回動軸部を通過する、溶融状態のポリブチレンテレフタレート樹脂組成物のせん断速度を1×103/秒以上1×106/秒以下、
保圧力を30MPa以上100MPa以下、
金型温度を100℃以下に調整する風向制御板の製造方法。
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JP2013542940A JP5616536B2 (ja) | 2011-11-08 | 2012-10-31 | 風向制御板、及び風向制御板の製造方法 |
US14/356,365 US20140287197A1 (en) | 2011-11-08 | 2012-10-31 | Wind direction-controlling plate and manufacturing method for wind direction-controlling plate |
CN201280054512.5A CN103917352B (zh) | 2011-11-08 | 2012-10-31 | 风向控制板、以及风向控制板的制造方法 |
MX2014005507A MX341713B (es) | 2011-11-08 | 2012-10-31 | Placa que controla la direccion del viento y metodo de fabricacion de placa que controla la direccion del viento. |
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CN103917352A (zh) | 2014-07-09 |
JP5616536B2 (ja) | 2014-10-29 |
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