WO2022107859A1 - 樹脂製パイプ - Google Patents
樹脂製パイプ Download PDFInfo
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- WO2022107859A1 WO2022107859A1 PCT/JP2021/042486 JP2021042486W WO2022107859A1 WO 2022107859 A1 WO2022107859 A1 WO 2022107859A1 JP 2021042486 W JP2021042486 W JP 2021042486W WO 2022107859 A1 WO2022107859 A1 WO 2022107859A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- liquid crystal
- less
- crystal polyester
- resin composition
- Prior art date
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- 229920001225 polyester resin Polymers 0.000 claims abstract description 42
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 98
- 229920005989 resin Polymers 0.000 claims description 72
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- 125000000217 alkyl group Chemical group 0.000 claims description 13
- 125000005843 halogen group Chemical group 0.000 claims description 12
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 6
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- 125000001841 imino group Chemical group [H]N=* 0.000 claims description 4
- 125000001989 1,3-phenylene group Chemical group [H]C1=C([H])C([*:1])=C([H])C([*:2])=C1[H] 0.000 claims description 3
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
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- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
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- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- IJFXRHURBJZNAO-UHFFFAOYSA-N meta--hydroxybenzoic acid Natural products OC(=O)C1=CC=CC(O)=C1 IJFXRHURBJZNAO-UHFFFAOYSA-N 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- MNZMMCVIXORAQL-UHFFFAOYSA-N naphthalene-2,6-diol Chemical compound C1=C(O)C=CC2=CC(O)=CC=C21 MNZMMCVIXORAQL-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000000045 pyrolysis gas chromatography Methods 0.000 description 1
- 238000000009 pyrolysis mass spectrometry Methods 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/60—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
- C08G63/605—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds the hydroxy and carboxylic groups being bound to aromatic rings
-
- 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
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/001—Pipes; Pipe joints
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
-
- 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
- B29C2045/0087—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor making hollow articles using a floating core movable in the mould cavity by fluid pressure and expelling molten excess material
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
- B29C2045/1724—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles hollows used as conduits
-
- 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
-
- 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
- B29K2105/0079—Liquid crystals
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/004—Bent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
- F16L43/008—Bends; Siphons made from plastic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
Definitions
- the present invention relates to a resin pipe.
- This application claims priority based on Japanese Patent Application No. 2020-191506 filed on November 18, 2020, the contents of which are incorporated herein by reference.
- Patent Document 1 shows an example in which polyamide is used as a resin.
- polyamide is difficult to solidify in a mold. Therefore, when polyamide is used in the manufacturing method of Patent Document 1, it is assumed that the molten polyamide flows until it solidifies in the mold, and the thickness of the pipe is biased between the upper side and the lower side in the direction of gravity. When such a bias occurs in the thickness of the pipe, it is liable to be damaged at a relatively thin portion.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a new resin pipe.
- one aspect of the present invention includes the following aspects.
- A is the melt viscosity of the liquid crystal polyester resin composition at the flow start temperature + 20 ° C.
- B is the melt viscosity of the liquid crystal polyester resin composition at the flow start temperature.
- the liquid crystal polyester resin composition comprises a repeating unit represented by the following formula (1), a repeating unit represented by the following formula (2), and a repeating unit represented by the following formula (3).
- Ar 1 represents a 2,6-naphthylene group, a 1,4-phenylene group or a 4,4'-biphenylylene group
- Ar 2 and Ar 3 independently represent a 2,6-naphthylene group, 1, It represents a 4-phenylene group, a 1,3-phenylene group or a 4,4'-biphenylylene group
- X and Y independently represent an oxygen atom or an imino group (-NH-).
- Ar 1 , Ar 2 or The hydrogen atom of the group represented by Ar 3 may be independently substituted with a halogen atom, an alkyl group or an aryl group.
- the present invention further includes the following aspects.
- the A is 20 Pa ⁇ s or more and 100 Pa ⁇ s or less, and the melt viscosity of the liquid crystal polyester resin composition is any one of [1] to [9] satisfying the following formula (A) -2.
- melt viscosity (unit: Pa ⁇ s) of the resin composition is measured by the following method using a flow tester (“CFT-500EX” manufactured by Shimadzu Corporation).
- CFT-500EX a flow tester
- melt viscosity (A) of the resin composition at the flow start temperature + 20 ° C. is measured by the following method.
- a die with a nozzle with an inner diameter of 1 mm and a length of 10 mm is attached to the tip of the cylinder, and the cylinder is heated to the flow start temperature of the resin composition + 20 ° C.
- the cylinder is filled with about 2 g of the resin composition and held for 5 minutes to melt the resin composition. Considering the weighing error of the device, "about 2 g" can be estimated to be 2 g ⁇ 0.1 g.
- a load of 9.8 MPa is applied to the molten resin composition, the viscosity of the molten resin extruded from the nozzle is measured, and the desired melt viscosity (A) is obtained. The melt viscosity was measured only once.
- the flow start temperature also called the flow temperature or the flow temperature, melts the liquid crystal polymer using a capillary rheometer while raising the temperature at a rate of 4 ° C./min under a load of 9.8 MPa (100 kgf / cm 2 ). It is a temperature showing a viscosity of 4800 Pa ⁇ s (48,000 poise) when extruded from a nozzle having an inner diameter of 1 mm and a length of 10 mm, and is a guideline for the molecular weight of the liquid crystal polymer (edited by Naoyuki Koide, “Liquid crystal polymer”. -Synthesis / Molding / Application- ", CMC Co., Ltd., June 5, 1987, p.95).
- the resin pipe 1 according to the present embodiment will be described in order with reference to FIGS. 1 to 3.
- the dimensions and ratios of the components are appropriately different in order to make the drawings easier to see.
- the resin pipe 1 may be simply referred to as "pipe 1".
- FIG. 1 is a schematic perspective view showing a pipe 1. As shown in FIG. 1, the pipe 1 has a curved portion 1R. Further, as shown in FIG. 1, the pipe 1 may have an extension portion 1S extending linearly.
- a method of forming a pipe having a curved portion a method of dividing the pipe into a plurality of members, forming the pipe, and then joining the members is known. Specific examples thereof include a method in which a pipe having a curved portion is divided into a plurality of pipes in the extending direction with the extended portion and the curved portion as separate members, and then spliced together. Further, as a known method, there is a method of forming a pipe structure by forming a member obtained by dividing a pipe having a curved portion in the circumferential direction and then fusing each member. The pipes formed by these methods have joints between members in the circumferential direction of the pipe or the extending direction of the pipe.
- integrally formed means that it is formed as one member (it is one member from the time of molding).
- the pipe 1 is different from a pipe in which two or more members are “integrated” into one, such as a pipe formed by the above-mentioned known method.
- the pipe 1 has a through hole H continuous from one end 1X to the other end 1Y along the extending direction E of the pipe 1.
- FIGS. 2 and 3 are schematic views illustrating a method for manufacturing the pipe 1, and are partially cutout views of the mold 100.
- a mold 100 for injection molding is used.
- the mold 100 is composed of a pair of molds 100a and 100b.
- the mold 100 has a cavity 110 that complementarily matches the outer shape of the pipe 1. Further, in the mold 100, a gate 100 g is formed. A cylinder 200 for melting the resin composition which is the raw material of the pipe 1 is connected to the gate 100 g. The cylinder 200 injects and injects the molten resin R into the cavity 110 through the gate 100 g.
- a pressure port 111 is provided at one end of the cavity 110.
- a pressurizing means (not shown) for injecting a pressurized fluid into the mold 100 is connected to the pressurizing port 111 via the pressurizing port 111.
- the pressurized fluid either (1) a gas that does not react with the liquid crystal polyester, (2) a gas that does not react with the liquid crystal polyester, (3) a liquid that does not react, or (4) a liquid that does not react with the liquid crystal polyester under the temperature and pressure of injection molding.
- the pressurized fluid include nitrogen gas, carbon dioxide gas, air, glycerin, water, liquid paraffin and the like.
- the pressure of the pressurized fluid supplied to the pressurizing port 111 is, for example, about 4.90 to 29.42 MPa.
- the pressure of the pressurized fluid depends on the type of resin used, the size of the floating core 150, and the viscosity of the molten resin R under the temperature conditions at the time of molding. Therefore, the pressure of the pressurized fluid should be adjusted appropriately by conducting a preliminary experiment.
- a floating core 150 that closes the pressure port 111 from the cavity 110 side is enclosed in the cavity 110 of the mold 100.
- the floating core 150 is pushed by the pressurized fluid injected into the cavity 110 from the pressurized port 111 and can move from one end to the other end of the cavity 110.
- the spherical floating core 150 is preferable because the thickness of the pipe (distance from the outer surface to the inner surface of the pipe) is unlikely to differ in the circumferential direction of the pipe to be manufactured.
- the appearance of a difference in the thickness of the pipe in the circumferential direction of the pipe may be referred to as "uneven thickness”.
- a discharge port 112 is provided at the other end of the cavity 110.
- the discharge port 112 is provided so as to be openable and closable.
- a housing unit 130 is connected to the discharge port 112.
- the accommodating portion 130 has an internal space 130x for accommodating the molten resin R.
- the molten resin R is injected and injected into the mold 100. At that time, the pressurizing port 111 is blocked by the floating core 150. Further, the discharge port 112 is closed.
- the discharge port 112 is opened before the molten resin R solidifies, and the pressurized fluid F is injected into the cavity 110 from a pressurizing means (not shown) via the pressurizing port 111.
- the floating core 150 moves from one end to the other end of the cavity 110 while pushing the molten resin R forward in the moving direction.
- the molten resin R pushed by the floating core 150 is discharged to the accommodating portion 130 via the discharge port 112.
- a through hole H of the pipe 1 is formed at a position where the floating core 150 has passed, and the pipe 1 is manufactured.
- the diameter of the through hole H is equivalent to the diameter of the floating core 150 in the field of view from the moving direction of the floating core 150.
- the pipe 1 manufactured in this way has an arithmetic average roughness (Ra) of 0.2 ⁇ m or more and 5 ⁇ m or less on the inner surface of the pipe 1 in the extending direction.
- the shape of the mold surface facing the cavity 110 is transferred to the outer surface of the pipe 1, that is, the surface in contact with the mold 100.
- the outer surface of the pipe 1 is expected to have the mirror-finished shape transferred and the arithmetic mean roughness (Ra) to be smaller than 0.2 ⁇ m. Will be done.
- the arithmetic average roughness (Ra) of the inner surface of the pipe 1 is larger than that of the mirror surface due to scratches caused by the movement of the floating core 150. Further, the inner surface of the pipe 1 is leveled by the movement of the floating core 150. As a result, as a feature of the pipe 1 manufactured by the above manufacturing method, the arithmetic average roughness (Ra) of the inner surface of the pipe 1 is larger than the arithmetic average roughness (Ra) of the outer surface of the pipe 1, and 0. It is 2 ⁇ m or more and 5 or less.
- the arithmetic average roughness (Ra) of the inner surface of the pipe 1 is larger than the arithmetic mean roughness (Ra) of the outer surface of the pipe 1. It can be confirmed by confirming that the arithmetic mean roughness (Ra) of the inner surface is 0.2 ⁇ m or more and 5 ⁇ m or less.
- the arithmetic mean roughness (Ra) of the inner surface of the pipe 1 may be 0.2 ⁇ m or more, 0.5 ⁇ m or more, or 1.0 ⁇ m or more.
- the arithmetic average roughness (Ra) of the inner surface of the pipe 1 is preferably 4.3 ⁇ m or less, more preferably 4.0 ⁇ m or less, and even more preferably 3.5 ⁇ m or less.
- the upper limit and lower limit of the arithmetic mean roughness (Ra) of the inner surface of the pipe 1 can be arbitrarily combined.
- the arithmetic mean roughness (Ra) can be 0.2 ⁇ m or more and 4.3 ⁇ m or less, more preferably 0.2 ⁇ m or more and 4.0 ⁇ m or less, and further preferably 0.2 ⁇ m or more and 3.5 ⁇ m or less. It is preferable that the arithmetic mean roughness of the inner surface is in this range without disturbing the flow of the fluid flowing inside the pipe.
- the test piece is made by cutting the pipe to a length of 20 mm in the extending direction to make a pipe piece, and further dividing the pipe piece into four evenly in the circumferential direction.
- the arithmetic mean roughness (Ra) is determined by measuring the test piece in the extending direction of the pipe using the above device. The measurement is performed on each of the four test pieces obtained by dividing the small pipe piece into four parts, and the arithmetic mean value of the obtained measured values is defined as the arithmetic mean roughness (Ra) to be obtained.
- the pipe 1 uses a liquid crystal polyester resin composition as a forming material.
- the resin composition comprises a liquid crystal polyester and a filler.
- the liquid crystal polyester has a low melt viscosity at the time of melting. Therefore, when manufacturing a resin molded body (resin pipe) having a complicated shape as shown in FIG. 1, there is an advantage that the mold can be easily filled with the molten resin. However, depending on the type of liquid crystal polyester, the solidification rate may be too fast to form a pipe having an appropriate shape.
- the melt viscosity of the resin composition tends to increase as the addition rate of the filler increases.
- the melt viscosity can be adjusted by adjusting the amount of the filler.
- melt viscosity of the liquid crystal polyester resin composition can also be prepared by changing at least one of the type of the liquid crystal polyester and the type of the filler.
- the [flow start temperature of the liquid crystal polyester resin composition + 20 ° C.] is a temperature that serves as a guideline for the "molding temperature" in the above manufacturing method.
- the resin composition is heated and melted to a temperature with [the flow start temperature of the liquid crystal polyester resin composition + 20 ° C.] as a guide.
- the resin composition may be heated and melted at [flow start temperature + 20 ° C. of the liquid crystal polyester resin composition].
- the above B / A indicates the ratio between the [flow start temperature of the liquid crystal polyester resin composition + 20 ° C.], which is a guideline for the molding temperature, and the flow start temperature.
- a resin composition having a large B / A value when the molten resin R is injection-injected into the mold 100, the molten resin R is cooled by the mold 100, the viscosity rapidly increases, and the fluidity is lost. Therefore, the resin composition having a large B / A value tends to make it difficult to manufacture the pipe 1.
- the pipe 1 can be suitably manufactured by the above manufacturing method. Since the obtained pipe 1 has no seams in the extending direction E and the circumferential direction C, the pressure resistance strength of the obtained pipe 1 is higher than that of the seamless pipe manufactured by the conventional manufacturing method using the same resin composition.
- the molten resin of the resin composition which is the material of the pipe 1 has a higher solidification rate than the polyamide, it is difficult to drip in the direction of gravity in the cavity 110 and it is difficult for the thickness to be uneven. Therefore, the obtained pipe 1 is less likely to have relatively thin portions and is less likely to be damaged.
- the upper limit value and the lower limit value of B / A can be arbitrarily combined.
- the B / A is preferably 1 or more and 10 or less (1 ⁇ B / A ⁇ 10), and more preferably 1.5 or more and 8 or less (1.5 ⁇ B / A ⁇ 8). It is more preferably 2 or more and 5 or less (2 ⁇ B / A ⁇ 5).
- the liquid crystal polyester constituting the resin composition is one of the thermotropic liquid crystal polymers, and is a polymer capable of forming a melt exhibiting optical anisotropy at a temperature of 450 ° C. or lower.
- Ar 1 represents a phenylene group, a naphthylene group or a biphenylylene group.
- Ar 2 and Ar 3 independently represent a phenylene group, a naphthylene group, a biphenylylene group or a group represented by the following general formula (4).
- X and Y each independently represent an oxygen atom or an imino group (-NH-).
- One or more hydrogen atoms in the group represented by Ar 1 , Ar 2 or Ar 3 respectively. It may be independently substituted with a halogen atom, an alkyl group or an aryl group.
- the liquid crystal polyester used as the material of the pipe 1 is (A) A polymer obtained by polymerizing a combination of an aromatic hydroxycarboxylic acid, an aromatic dicarboxylic acid, and an aromatic diol. (B) A polymer obtained by polymerizing a plurality of aromatic hydroxycarboxylic acids, (C) A polymer obtained by polymerizing a combination of an aromatic dicarboxylic acid and an aromatic diol, (D) A polymer obtained by reacting a crystalline polyester such as polyethylene terephthalate with an aromatic hydroxycarboxylic acid can be mentioned.
- the liquid crystal polyester In the production of the liquid crystal polyester, a part or all of the aromatic hydroxycarboxylic acid, the aromatic dicarboxylic acid and the aromatic diol used as the raw material monomer can be made into an ester-forming derivative in advance and used for the polymerization.
- the ester-forming property means a property capable of forming an ester bond.
- ester-forming derivatives of aromatic hydroxycarboxylic acids and aromatic dicarboxylic acids having a carboxy group in the molecule examples include haloformyl groups (acid halides) and acyloxycarbonyl groups (acid anhydrides).
- the compound converted into a highly reactive group and the carboxy group form an ester with monovalent alcohols, polyhydric alcohols such as ethylene glycol, and phenols so that the carboxy group produces an ester by an ester exchange reaction. Examples of the compound.
- polymerizable derivatives of compounds having a phenolic hydroxyl group such as aromatic hydroxycarboxylic acids and aromatic diols
- esters with lower carboxylic acids such that the phenolic hydroxyl group produces a polyester by an ester exchange reaction.
- examples thereof include compounds that have formed.
- aromatic hydroxycarboxylic acid, aromatic dicarboxylic acid or aromatic diol has a halogen atom such as a chlorine atom or a fluorine atom in the aromatic ring in the molecule; a methyl group, as long as it does not inhibit the ester-forming property.
- a halogen atom such as a chlorine atom or a fluorine atom in the aromatic ring in the molecule
- a methyl group as long as it does not inhibit the ester-forming property.
- An alkyl group having 1 to 10 carbon atoms such as an ethyl group and a butyl group
- an aryl group having 6 to 20 carbon atoms such as a phenyl group
- aromatic hydroxycarboxylic acid examples include p-hydroxybenzoic acid, m-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, 3-hydroxy-2-naphthoic acid, and 5-hydroxy-1-naphthoic acid, 4 -Hydroxy-4'-carboxydiphenyl ether can be mentioned. Further, an aromatic hydroxycarboxylic acid in which some of the hydrogen atoms in the aromatic ring of these aromatic hydroxycarboxylic acids are substituted with one or more substituents selected from the group consisting of an alkyl group, an aryl group and a halogen atom. Can be mentioned.
- the p-hydroxybenzoic acid is an aromatic hydroxycarboxylic acid that induces (A 1 ) described later.
- 6-Hydroxy-2-naphthoic acid is an aromatic hydroxycarboxylic acid that induces (A 2 ) described later.
- the above-mentioned repeating unit (1) is a repeating unit derived from a predetermined aromatic hydroxycarboxylic acid.
- the repeating unit derived from the aromatic hydroxycarboxylic acid include the repeating units shown below.
- a part of the hydrogen atom in the aromatic ring is substituted with one or more substituents selected from the group consisting of a halogen atom, an alkyl group and an aryl group. May be.
- oil means that the chemical structure is changed due to the polymerization of the raw material monomer, and no other structural change occurs.
- aromatic dicarboxylic acid examples include terephthalic acid, isophthalic acid, biphenyl-4,4'-dicarboxylic acid, 2,6-naphthalenedirubonic acid, diphenylether-4,4'-dicarboxylic acid, and diphenylthioether-4,4. '-Dicarboxylic acid is mentioned. Further, an aromatic dicarboxylic acid in which a part of hydrogen atoms in the aromatic ring of these aromatic dicarboxylic acids is substituted with one or more substituents selected from the group consisting of an alkyl group, an aryl group and a halogen atom can be mentioned. Be done.
- Terephthalic acid is an aromatic dicarboxylic acid that induces (B 1 ) described later.
- Isophthalic acid is an aromatic dicarboxylic acid that induces (B 2 ) described later.
- 2,6-naphthalenedirubonic acid is an aromatic dicarboxylic acid that induces (B 3 ) described later.
- the aromatic dicarboxylic acid may be used alone or in combination of two or more in the production of liquid crystal polyester.
- the above-mentioned repeating unit (2) is a repeating unit derived from a predetermined aromatic dicarboxylic acid.
- the repeating unit derived from the aromatic dicarboxylic acid include the repeating units shown below.
- a part of the hydrogen atom in the aromatic ring is substituted with one or more substituents selected from the group consisting of a halogen atom, an alkyl group and an aryl group. May be good.
- aromatic diol examples include 4,4'-dihydroxybiphenyl, hydroquinone, resorcin, 4,4'-dihydroxydiphenylketone, 4,4'-dihydroxydiphenyl ether, bis (4-hydroxyphenyl) methane, 1,2-.
- aromatic diol examples include bis (4-hydroxyphenyl) ethane, 4,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxydiphenylthioether, 2,6-dihydroxynaphthalene and 1,5-dihydroxynaphthalene.
- aromatic diol in which a part of hydrogen atoms in the aromatic ring of these aromatic diols is substituted with one or more substituents selected from the group consisting of an alkyl group, an aryl group and a halogen atom can be mentioned.
- 4,4'-Dihydroxybiphenyl is an aromatic diol that induces (C 1 ) described later.
- Hydroquinone is an aromatic diol that induces (C 2 ) described later.
- Resolvi is an aromatic diol that induces (C 3 ) described later.
- the aromatic diol may be used alone or in combination of two or more in the production of liquid crystal polyester.
- the above-mentioned repeating unit (3) includes a repeating unit derived from a predetermined aromatic diol.
- the repeating unit derived from the aromatic diol include the repeating units shown below. In the repeating unit derived from an aromatic diol, even if a part of the hydrogen atom in the aromatic ring is substituted with one or more substituents selected from the group consisting of a halogen atom, an alkyl group and an aryl group. good.
- halogen atoms include fluorine atoms, chlorine atoms, and bromine atoms.
- alkyl group examples include lower alkyl groups having about 1 to 4 carbon atoms such as a methyl group, an ethyl group and a butyl group.
- aryl groups examples include phenyl groups.
- a particularly suitable liquid crystal polyester will be described.
- a suitable liquid crystal polyester has a repeating unit represented by the following formula (1), a repeating unit represented by the following formula (2), and a repeating unit represented by the following formula (3), and has all repetitions.
- the content of the repeating unit containing a 2,6-naphthylene group with respect to the unit is 40 mol% or more and 75 mol% or less.
- the content of the repeating unit containing the 2,6-naphthylene group with respect to all the repeating units is preferably 55 mol% or more and 75 mol% or less.
- liquid crystal polyester when the content of the repeating unit containing the 2,6-naphthylene group with respect to all the repeating units is 75 mol% or less, the liquid crystal property of the molten resin is not easily lost. Therefore, such a liquid crystal polyester is easy to secure the fluidity of the molten resin and is excellent in processability. Further, when the content is 40 mol% or more, it is difficult to hydrolyze. Therefore, such a liquid crystal polyester tends to have an appropriate viscosity at the time of melt kneading, and a good pipe can be formed.
- the melt viscosity at the molding temperature does not become too high, and the resin pipe of the present embodiment can be easily manufactured by the above-mentioned manufacturing method.
- the "molding temperature” is set as a guideline of [flow start temperature of the liquid crystal polyester resin composition] + 20 ° C., and is appropriately set according to the characteristics of the molding machine used.
- the content of the repeating unit (1) is preferably 30 mol% or more and 80 mol% or less, more preferably 40 mol% or more and 70 mol% or less, still more preferably, with respect to the total amount of all repeating units. It is 45 mol% or more and 65 mol% or less.
- the content of the repeating unit (2) is preferably 10 mol% or more and 35 mol% or less, more preferably 15 mol% or more and 30 mol% or less, still more preferably 17. It is 5 mol% or more and 27.5 mol% or less.
- the content of the repeating unit (3) is preferably 10 mol% or more and 35 mol% or less, more preferably 15 mol% or more and 30 mol% or less, still more preferably 17. It is 5 mol% or more and 27.5 mol% or less.
- the liquid crystal polyester having a predetermined repeating unit composition as described above has an excellent balance between heat resistance and moldability. It is preferable that the content of the repeating unit (2) and the content of the repeating unit (3) are substantially equal to each other.
- the liquid crystal polyester used as the material of the pipe 1 is preferably the following (I), more preferably the following (II), and even more preferably the following (III).
- the content of the repeating unit (1) is 30 mol% or more and 80 mol% or less, and the content of the repeating unit (2) is 10 mol% or more and 35 mol% or less, based on the content of all the repeating units.
- the content of the repeating unit (1) is 40 mol% or more and 70 mol% or less, and the content of the repeating unit (2) is 15 mol% or more and 30 mol% or less, based on the content of all the repeating units.
- the content of the repeating unit (1) is 45 mol% or more and 65 mol% or less, and the content of the repeating unit (2) is 17.5 mol% or more and 27.5 with respect to the content of all the repeating units.
- a liquid crystal polyester having a molar% or less and a content of the repeating unit (3) of 17.5 mol% or more and 27.5 mol% or less.
- the liquid crystal polyester may have a repeating unit other than the repeating units (1) to (3), if necessary.
- the content of such repeating units is preferably 10 mol% or less, more preferably 5 mol% or less, based on the total amount of all repeating units.
- the resin composition contains a filler.
- the filler may be an organic filler or an inorganic filler.
- the filler may be a spherical filler, a fibrous filler, or a plate-shaped filler, but a plate-shaped filler is preferable.
- filler Only one type of filler may be used, or two or more types may be used in combination. Regarding the "type" of the filler, for example, even if it is a fibrous filler, if any one of the material and the shape (fiber length, fiber diameter) is different, it will be a different type. In addition, if the product grades of the fillers sold as products are different, it is judged that they are different types. The same applies to other organic fillers and inorganic fillers.
- Examples of granular fillers include silica, alumina, titanium oxide, glass beads, glass balloons, boron nitride, silicon carbide and calcium carbonate.
- fibrous fillers examples include glass fiber, carbon fiber, ceramic fiber, and metal fiber.
- glass fiber examples include chopped glass fiber and milled glass fiber.
- Chopped glass fiber is obtained by cutting a fiber bundle (glass strand) in which a plurality of glass single fibers drawn from a spinning nozzle are directly aligned and focused to a length of 1.5 to 25 mm. Fiber (glass chopped strand).
- Milled glass fiber refers to a fiber (milled fiber) obtained by crushing or cutting a glass strand to a size of less than 1 mm.
- Examples of carbon fibers include bread-based carbon fibers and pitch-based carbon fibers.
- Ceramic fibers include silica fibers, alumina fibers, and silica-alumina fibers.
- examples of the fibrous filler include whiskers such as potassium titanate whiskers, barium titanate whiskers, wollast night whiskers, aluminum borate whiskers, silicon nitride whiskers, and silicon carbide whiskers.
- plate-like fillers examples include talc, mica, graphite, wollastonite, glass flakes, barium sulfate and calcium carbonate.
- the mica may be muscovite, phlogopite, fluorine phlogopite, or tetrasilicon mica.
- the content of the inorganic filler in the resin composition is preferably more than 0 parts by mass and 100 parts by mass or less, and more preferably 10 parts by mass or more and 100 parts by mass or less with respect to 100 parts by mass of the liquid crystal polyester. It is more preferably 20 parts by mass or more and 90 parts by mass or less, and particularly preferably more than 20 parts by mass and 80 parts by mass or less.
- the upper limit and the lower limit of the content of the inorganic filler can be arbitrarily combined.
- the number average fiber length of the glass fibers that may be contained in the above-mentioned resin composition may be 10 ⁇ m or more and 2000 ⁇ m or less, 20 ⁇ m or more and 1000 ⁇ m or less, 30 ⁇ m or more and 800 ⁇ m or less, and 40 ⁇ m or more and 500 ⁇ m. It may be less than or equal to, and may be 45 ⁇ m or more and 400 ⁇ m or less.
- the upper limit and the lower limit of the number average fiber length of the glass fibers can be arbitrarily combined.
- the number average fiber length of the glass fibers contained in the resin composition can be obtained by the following method.
- the resin composition is heated in a muffle furnace (manufactured by Yamato Scientific Co., Ltd., "FP410") at 600 ° C. for 4 hours in an air atmosphere to remove the resin, and an ashed residue containing glass fiber is obtained.
- a mixed solution prepared by adding 0.3 g of the ashing residue to 50 mL of pure water is prepared, and the mixed solution is irradiated with ultrasonic waves for 5 minutes using an ultrasonic cleaner (manufactured by VELVO-CLEAR, model number: VS-25). ..
- the ashing residue is uniformly dispersed in water to obtain a sample solution in which glass fibers are dispersed.
- an aqueous surfactant solution may be used instead of pure water in order to promote the dispersion of the ashing residue.
- concentration of the surfactant may be specified in a preliminary experiment so as to promote the dispersion of the ashing residue and to be a concentration that does not excessively foam by ultrasonic irradiation.
- a particle shape image analyzer (“Rapid VUE” manufactured by BECKMAN COULTER Co., Ltd.) is used to image the glass components in the liquid one by one.
- the imaged glass fiber is observed from the viewing direction, and the length in the longitudinal direction is read as the fiber length, and the length in the direction orthogonal to the longitudinal direction is read as the fiber diameter.
- the measurement was terminated when the number of measured glass fibers reached 10,000, and the arithmetic average value of the fiber lengths of 10,000 glass fibers was obtained from the obtained fiber lengths of each glass fiber, and the number average fiber length of the glass fibers was calculated. do.
- the number average fiber length of the glass fibers contained in the molded pipe can also be measured.
- the plasticization time of injection molding can be made good.
- the number average fiber length of the glass fibers is at least the above lower limit value, it can be expected that the flexural modulus of the pipe 1 becomes high.
- the extending direction of the pipe corresponds to the flow direction of the molten resin (MD direction)
- the circumferential direction of the pipe corresponds to the direction orthogonal to the flow of the molten resin (TD direction).
- the flexural modulus of each of the extending direction and the circumferential direction of the pipe correlates with the flexural modulus of the test piece measured in the model experiment described later.
- the flexural modulus in the extending direction and the flexural modulus in the circumferential direction of the pipe can be evaluated by measuring the physical properties of the test piece of the model experiment by the method described later.
- the long side is aligned with the resin flow direction (MD direction) and the short side is aligned with the direction orthogonal to the resin flow (TD direction), and the size is 10 mm (TD) x 100 mm (MD) x 1.6 mm. Cut out 3 test pieces.
- the elastic modulus of the obtained test piece was measured three times using a universal testing machine (Tencilon RTG-1250, manufactured by A & D Co., Ltd.), and the arithmetic mean value of the measured value was the bending elasticity in the MD direction.
- the rate (unit: GPa).
- the flexural modulus in the MD direction (MD direction / TD direction) with respect to the flexural modulus in the TD direction is obtained, and the obtained value is used as an index of the elastic modulus anisotropy of the pipe. ..
- the elastic modulus anisotropy can be evaluated as the closer the value is to 1, the smaller the elastic modulus anisotropy.
- the liquid crystal polyester has a property of being oriented in the resin flow direction
- the flexural modulus in the MD direction is usually larger than the flexural modulus in the TD direction. Therefore, the minimum value of the evaluation value of elastic modulus anisotropy is 1.
- the diameter of the glass fiber is preferably 5 ⁇ m or more and 17 ⁇ m or less, more preferably 6 ⁇ m or more and 15 ⁇ m or less, and further preferably 9 ⁇ m or more and 12 ⁇ m or less.
- the upper limit and the lower limit of the diameter of the glass fiber can be arbitrarily combined.
- the upper and lower limits of the glass fiber content can be arbitrarily combined. For example, it is preferably more than 0 parts by mass and 100 parts by mass or less, more preferably 10 parts by mass or more and 100 parts by mass or less, and 10 parts by mass or more and 70 parts by mass or less with respect to 100 parts by mass of the liquid crystal polyester. It is more preferably 20 parts by mass or more and 60 parts by mass or less.
- the glass fiber material examples include E-glass, A-glass, C-glass, D-glass, AR-glass, R-glass, S glass, or a mixture thereof.
- E-glass is preferable because it has excellent strength and is easily available.
- talc (Plate-shaped filler: talc)
- pulverized minerals composed of magnesium hydroxide and silicate minerals.
- Talc is a structure in which an octahedral structure composed of three magnesium (Mg) oxidation / hydroxide is sandwiched between four tetrahedral structures formed by four atoms of silicon (Si) oxide. May be.
- a wet pulverization method may be used in which the pulverized talc powder is dispersed with water to form a flowable viscosity slurry, which is pulverized by a ball mill, a bead mill, a wet jet mill, a discoplex or the like.
- the dry pulverization method is preferable because it is low in cost and easy to carry out.
- the surface of talc may be treated with a coupling agent or the like for the purpose of improving the wettability between talc and the melted liquid crystal polyester. Further, heat-treated talc may be used for the purpose of removing impurities and hardening the talc. Further, for the purpose of facilitating handling, talc compression-molded into a tablet shape may be used.
- the content of talc in the resin composition is preferably more than 0 parts by mass, more preferably 10 parts by mass or more, and further preferably 20 parts by mass or more with respect to 100 parts by mass of the liquid crystal polyester.
- the content of talc in the resin composition is preferably 100 parts by mass or less, more preferably 85 parts by mass or less, and more preferably 65 parts by mass or less with respect to 100 parts by mass of the liquid crystal polyester. More preferred.
- the upper and lower limits of the talc content can be arbitrarily combined. It is preferably more than 0 parts by mass and 100 parts by mass or less, more preferably 10 parts by mass or more and 100 parts by mass or less, and 10 parts by mass or more and 85 parts by mass or less with respect to 100 parts by mass of the liquid crystal polyester. Is more preferable, and it is particularly preferable that the amount is 20 parts by mass or more and 65 parts by mass or less.
- a resin composition having a talc content in such a range has excellent molding processability and mechanical strength of the molded product.
- the volume average particle size of talc can be measured by laser diffraction. Using a scattering type particle size distribution measuring device (“LA-950V2” manufactured by Horiba Seisakusho Co., Ltd.) as a measuring device, calculate the volume average particle size under the following measurement conditions with the talc dispersed in water. Can be done.
- LA-950V2 scattering type particle size distribution measuring device
- Refractive index of particles 1.59-0.11
- Dispersion medium Water Dispersion medium Refractive index: 1.33
- the volume average particle size of talc contained in the resin composition is preferably 5 ⁇ m or more, more preferably 15 ⁇ m or more, still more preferably 20 ⁇ m or more.
- the volume average particle size of talc is preferably 25 ⁇ m or less, more preferably 24.5 ⁇ m or less, and even more preferably 24 ⁇ m or less.
- Mica is a pulverized silicate mineral containing aluminum, potassium, magnesium, sodium, iron and the like.
- An octahedral structure composed of two or three metal oxidation / hydroxide is sandwiched between four tetrahedral structures formed by an oxide of three atoms of silicon (Si) and one atom of aluminum (Al). It is a mineral that has formed a structure.
- the mica that may be contained in the resin composition may be muscovite, phlogopite, phlogopite fluorine, tetrasilicon mica, or artificially produced synthetic mica.
- Mica is preferably composed substantially only of muscovite. "Substantially" means that muscovite occupies 99% by volume or more of all mica used.
- a coagulation sedimentation agent or a sedimentation aid during pulverization.
- coagulation sedimentation agents and sedimentation aids polyaluminum chloride, aluminum sulfate, aluminum sulfate, ferrous sulfate, ferrous sulfate, copper chloride, polyiron sulfate, ferric chloride, iron-silica inorganic polymer coagulation.
- the coagulation sedimentation agent and the sedimentation aid promote the dispersion of the crushed mica in water and facilitate the pulverization treatment, but may cause the decomposition of the liquid crystal polyester.
- the volume average particle size of mica is preferably 20 ⁇ m or more, more preferably 21 ⁇ m or more, and particularly preferably 22 ⁇ m or more.
- the volume average particle size of mica is preferably 45 ⁇ m or less, more preferably 44 ⁇ m or less, and particularly preferably 43 ⁇ m or less.
- the above upper limit value and lower limit value of the volume average particle size of mica can be arbitrarily combined.
- the volume average particle size of the mica is preferably 20 ⁇ m or more and 45 ⁇ m or less, more preferably 21 ⁇ m or more and 44 ⁇ m or less, and particularly preferably 22 ⁇ m or more and 43 ⁇ m or less.
- the volume average particle size of mica can be measured by a laser diffraction method.
- a scattering type particle size distribution measuring device (“LA-950V2” manufactured by Horiba Seisakusho Co., Ltd.) is used, and the volume average particle size is calculated under the following measurement conditions with the mica dispersed in water. be able to.
- Refractive index of particles 1.57-0.1i Dispersion medium: Water Dispersion medium Refractive index: 1.33
- the content of mica in the resin composition is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, and particularly preferably 30 parts by mass or more with respect to 100 parts by mass of the liquid crystal polyester.
- the content of mica in the resin composition is preferably 100 parts by mass or less, more preferably 80 parts by mass or less, and particularly preferably 60 parts by mass or less with respect to 100 parts by mass of the liquid crystal polyester.
- the above upper limit and lower limit of the content of mica can be arbitrarily combined.
- 5 parts by mass or more and 100 parts by mass or less are preferable, 10 parts by mass or more and 80 parts by mass or less are more preferable, and 30 parts by mass or more and 60 parts by mass or less are particularly preferable.
- Liquid crystal polyester has the property of being easily oriented in the flow direction of the molten resin. Therefore, the strength of the molded body made of liquid crystal polyester in the direction orthogonal to the orientation direction of the resin tends to decrease.
- the liquid crystal polyester tends to be oriented in the extending direction E of the pipe, and the strength tends to decrease in the circumferential direction C.
- the strength of the pipe made of liquid crystal polyester in the circumferential direction C that is, the withstand voltage tends to decrease.
- the liquid crystal polyester is less likely to be oriented in the flow direction than when the resin composition contains a spherical filler or a fibrous filler.
- the pipe 1 containing the plate-shaped filler in the resin composition as the material tends to exhibit higher pressure resistance than the pipe containing the spherical filler or the fibrous filler in the resin composition, which is preferable.
- the compressive strength can be evaluated by measuring the following tensile fracture strength.
- test method of tensile fracture strength From the extended portion of the pipe, cut out four annular test pieces having a length of 10 mm in the extending direction. The obtained test piece is measured for tensile fracture strength (unit: N) using a universal testing machine (Tensilon RTG-1250, manufactured by A & D Co., Ltd.) at a test speed of 5 mm / min. The maximum stress in the tensile test is measured for each of the four test pieces, and the average value of the measured values is taken as the tensile fracture strength (unit: N).
- the pipe 1 manufactured by the above manufacturing method has a total length of 300 mm or more, an outer diameter of 5 mm or more, and a ratio of the inner diameter to the outer diameter of 0.6 or more and less than 1.
- the “total length" of the pipe 1 is the distance measured from one end of the pipe 1 to the other end of the pipe 1 along the central axis of the pipe 1.
- the total length of the pipe 1 is, for example, preferably 350 mm or more, and more preferably 400 mm or more. Further, the total length of the pipe 1 is preferably, for example, 2000 mm or less, more preferably 1000 mm or less.
- the upper limit value and the lower limit value of the total length of the pipe 1 can be arbitrarily combined.
- the outer diameter of the pipe 1 is preferably 5 mm or more, more preferably 10 mm or more.
- the outer diameter of the pipe 1 is preferably 30 mm or less, more preferably 25 mm or less.
- the upper limit value and the lower limit value of the outer diameter of the pipe 1 can be arbitrarily combined.
- the ratio of the inner diameter to the outer diameter of the pipe 1 is preferably 0.7 or more, more preferably 0.8 or more.
- the ratio of the inner diameter to the outer diameter of the pipe 1 is preferably 0.95 or less, more preferably 0.9 or less.
- the upper limit value and the lower limit value can be arbitrarily combined.
- the pipe 1 has a total length of 350 mm or more, an outer diameter of 10 mm or more, and a ratio of the inner diameter to the outer diameter of 0.8 or more and 0.9 or less.
- the pipe 1 has the thickness at all measurement points when the thickness is measured at four points at approximately equal intervals in the circumferential direction C at each of the arbitrary 5 to 10 measurement sites in the extending direction.
- the difference between the maximum value and the minimum value (hereinafter, may be referred to as thickness variation) is preferably 500 ⁇ m or less.
- the four points measured along the circumferential direction C are preferably 90 degree intervals.
- the thickness of pipe 1 can be measured by the following method.
- the thickness of the pipe is measured by cutting the measurement site of the pipe to prepare a cross section and observing the cross section with a microscope (“VHX-1000” manufactured by KEYENCE CORPORATION).
- the difference between the outer diameter and the inner diameter of the pipe is the pipe thickness (unit: mm).
- the thickness of the pipe is measured at four locations at approximately equal intervals in the circumferential direction C at any of the five to ten locations in the extending direction. Let the arithmetic mean of the measured values be the pipe thickness.
- the variation in the thickness of the pipe can be measured by the following method.
- the thickness variation of the pipe 1 is preferably 450 ⁇ m or less, more preferably 400 ⁇ m or less, and further preferably 350 ⁇ m or less.
- the theoretical lower limit of the thickness variation is 0 ⁇ m.
- the variation in thickness depends on the molten resin temperature, the mold temperature, the time from injecting the molten resin into the mold to the injection of the pressurized fluid, and the pressurized fluid after using the above-mentioned resin composition as a material. By controlling the applied pressure, etc., it can be prepared within the range of normal trial and error.
- the radius of curvature of the curved portion 1R is preferably 10 mm or less, and more preferably 8 mm or less.
- the radius of curvature of the curved portion 1R is preferably 2 mm or more. When the radius of curvature falls within this range, the size of the pipe as a whole can be reduced, and the degree of freedom in shape can be increased.
- the "radius of curvature" is obtained by measuring the concave portion of the outer surface of the curved portion 1R when the curved portion 1R is viewed from the viewpoint where the curvature is the largest.
- melt viscosity The melt viscosity of the resin composition was measured according to the above-mentioned (measurement method of melt viscosity).
- the flow start temperature of the resin composition was measured according to the above-mentioned (method for measuring the flow start temperature).
- liquid crystal polyester liquid crystal polymer
- the temperature is raised from room temperature (23 ° C.) to 145 ° C. over 15 minutes while stirring the mixture in the reactor under a nitrogen gas stream for 1 hour at 145 ° C. It was refluxed.
- the obtained prepolymer was pulverized, and the obtained powdered prepolymer was heated from room temperature to 250 ° C. over 1 hour under a nitrogen atmosphere. Further, the prepolymer was heated from 250 ° C. to 320 ° C. over 10 hours, heated, and held at 320 ° C. for 5 hours for solid phase polymerization.
- the reaction product was cooled to room temperature to obtain a powdery liquid crystal polyester (resin 1).
- the flow start temperature of the resin 1 was 320 ° C.
- the total amount of all the repeating units is 100 mol%
- the repeating unit (1) having a 2,6-naphthylene group is 55 mol%
- the repeating unit (2) having a 2,6-naphthylene group is 17. It had 5 mol%, a repeating unit (2) having a 1,4-phenylene group, and 22.5% a repeating unit (3) having a 1,4-phenylene group.
- the reaction product was cooled to room temperature to obtain a powdery liquid crystal polyester (resin 2).
- the flow start temperature of the resin 2 was 327 ° C.
- Plate-shaped filler 1 Mica (J-31M (manufactured by Yamaguchi Mica, volume average particle size 35 ⁇ m))
- Plate-shaped filler 2 Talc (GH50 (manufactured by Hayashi Kasei Co., Ltd., volume average particle size 22 ⁇ m))
- Fibrous filler Glass fiber (CS03JAPX-1 (manufactured by Owens Corning, fiber diameter: 10 ⁇ m, fiber length: 3 mm))
- the liquid crystal polyester resin compositions of Examples 1 and 2 satisfy the following formula (A), and the liquid crystal polyester resin composition of Comparative Example 1 does not satisfy the following formula (A).
- B / A ⁇ 10 ... (A) (A is the melt viscosity of the liquid crystal polyester resin composition at the flow start temperature + 20 ° C. B is the melt viscosity of the liquid crystal polyester resin composition at the flow start temperature. )
- An injection molding machine manufactured by Toyo Machinery Metals Co., Ltd., model number: TOYO PLASTAR TP-180H was used for molding.
- the molding conditions were a cylinder temperature of 350 ° C., a mold temperature of 80 ° C., a resin injection speed of 30 mm / sec, a ball (floating core) diameter of 15 mm, and a gas delay time of 3.2 seconds.
- the obtained pipe 10 had a total length of 400 mm, an extension portion 10S of 20 cm in length, an outer diameter of 16 mm, and a ratio of the inner diameter to the outer diameter of 0.884. Further, the radius of curvature of the portion X having the smallest radius of curvature in the curved portion 10R was 10 mm.
- the flexural modulus in the MD direction (MD direction / TD direction) with respect to the flexural modulus in the TD direction was obtained, and the elastic modulus anisotropy was obtained.
- the tensile fracture strength of the pipe was measured according to the above-mentioned (measurement method of tensile fracture strength).
- the thickness of the pipe was measured according to the above-mentioned (method for measuring the pipe thickness) by cutting the measurement site of the pipe to prepare a cross section.
- the "measurement sites of the pipe" for forming the cross section are arbitrary 7 places in the extending direction in Examples 1 and 2, and arbitrary in the extending direction in Comparative Example 1. 6 places. Of the measurement sites of the examples, 5 out of 7 sites and 4 of the 6 measurement sites of the comparative example were curved portions.
- Table 2 shows the measurement results.
- the test pieces for which the tensile fracture strength was measured were designated as "No. 1", “No. 2", “No. 3”, and “No. 4", respectively.
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Abstract
Description
B/A≦10…(A)
(Aは、前記液晶ポリエステル樹脂組成物の流動開始温度+20℃における溶融粘度である。
Bは、前記液晶ポリエステル樹脂組成物の流動開始温度における溶融粘度である。)
(1)-O-Ar1-CO-
(2)-CO-Ar2-CO-
(3)-X-Ar3-Y-
(式中、Ar1は2,6-ナフチレン基、1,4-フェニレン基又は4,4’-ビフェニリレン基を表し、Ar2及びAr3はそれぞれ独立に、2,6-ナフチレン基、1,4-フェニレン基、1,3-フェニレン基又は4,4’-ビフェニリレン基を表す。X及びYは、それぞれ独立に、酸素原子又はイミノ基(-NH-)を表す。Ar1、Ar2又はAr3で表される基が有する水素原子は、それぞれ独立に、ハロゲン原子、アルキル基又はアリール基で置換されていてもよい。)
1≦B/A≦10 …(A)-1
2≦B/A≦5 …(A)-2
B/A≦10…(A)
(Aは、液晶ポリエステル樹脂組成物の流動開始温度+20℃における溶融粘度である。Bは、液晶ポリエステル樹脂組成物の流動開始温度における溶融粘度である。)
樹脂組成物の溶融粘度(単位:Pa・s)は、フローテスター(株式会社島津製作所社製「CFT-500EX」)を用いて下記方法で測定する。例えば、樹脂組成物の流動開始温度+20℃における溶融粘度(A)は、以下の方法で測定する。
流動開始温度は、フロー温度又は流動温度とも呼ばれ、毛細管レオメーターを用いて、9.8MPa(100kgf/cm2)の荷重下、4℃/分の速度で昇温しながら、液晶ポリマーを溶融させ、内径1mm及び長さ10mmのノズルから押し出すときに、4800Pa・s(48000ポイズ)の粘度を示す温度であり、液晶ポリマーの分子量の目安となるものである(小出直之編、「液晶ポリマー-合成・成形・応用-」、株式会社シーエムシー、1987年6月5日、p.95参照)。
算術平均粗さ(Ra)は、試験片を「JIS B 0601:1982」に準拠し、非接触表面粗さ計(例えば、株式会社小坂研究所社製「SE600LK-31」)を用いて測定した値を採用する。
パイプ1は、液晶ポリエステル樹脂組成物を形成材料とする。樹脂組成物は、液晶ポリエステルと、充填材とを含む。
B/A≦10 …(A)
(Aは、液晶ポリエステル樹脂組成物の流動開始温度+20℃における溶融粘度である。Bは、液晶ポリエステル樹脂組成物の流動開始温度における溶融粘度である。)
例えば、B/Aは、1以上10以下である(1≦B/A≦10)ことが好ましく、1.5以上8以下である(1.5≦B/A≦8)ことがより好ましく、2以上5以下である(2≦B/A≦5)ことがさらに好ましい。
樹脂組成物を構成する液晶ポリエステルは、サーモトロピック液晶ポリマーの一つであり、光学的異方性を示す溶融体を450℃以下の温度で形成し得る重合体である。
以下、下記一般式(1)で表される繰り返し単位を「繰返し単位(1)」ということがある。
下記一般式(2)で表される繰り返し単位を「繰返し単位(2)」ということがある。
下記一般式(3)で表される繰り返し単位を「繰返し単位(3)」ということがある。
(2)-CO-Ar2-CO-
(3)-X-Ar3-Y-
(式中、Ar1は、フェニレン基、ナフチレン基又はビフェニリレン基を表す。Ar2及びAr3は、それぞれ独立に、フェニレン基、ナフチレン基、ビフェニリレン基又は下記一般式(4)で表される基を表す。X及びYは、それぞれ独立に、酸素原子又はイミノ基(-NH-)を表す。Ar1、Ar2又はAr3で表される前記基中の1個以上の水素原子は、それぞれ独立に、ハロゲン原子、アルキル基又はアリール基で置換されていてもよい。)
(式中、Ar4及びAr5は、それぞれ独立に、フェニレン基又はナフチレン基を表す。
Zは、酸素原子、硫黄原子、カルボニル基、スルホニル基又はアルキリデン基を表す。)
(a)芳香族ヒドロキシカルボン酸と芳香族ジカルボン酸と芳香族ジオールとの組み合わせを重合して得られる重合体、
(b)複数種の芳香族ヒドロキシカルボン酸を重合して得られる重合体、
(c)芳香族ジカルボン酸と芳香族ジオールとの組み合わせを重合して得られる重合体、
(d)ポリエチレンテレフタレートなどの結晶性ポリエステルに芳香族ヒドロキシカルボン酸を反応させて得られる重合体、などを挙げることができる。
芳香族ヒドロキシカルボン酸としては、例えば、p-ヒドロキシ安息香酸、m-ヒドロキシ安息香酸、6-ヒドロキシ-2-ナフトエ酸、3-ヒドロキシ-2-ナフトエ酸、5-ヒドロキシ-1-ナフトエ酸、4-ヒドロキシ-4’-カルボキシジフェニルエーテルが挙げられる。また、これらの芳香族ヒドロキシカルボン酸の芳香環にある水素原子の一部が、アルキル基、アリール基及びハロゲン原子からなる群より選ばれる1種以上の置換基で置換された芳香族ヒドロキシカルボン酸が挙げられる。
芳香族ジカルボン酸としては、例えば、テレフタル酸、イソフタル酸、ビフェニル-4,4’-ジカルボン酸、2,6-ナフタレンジルボン酸、ジフェニルエーテル-4,4’-ジカルボン酸、ジフェニルチオエーテル-4,4’-ジカルボン酸が挙げられる。また、これらの芳香族ジカルボン酸の芳香環にある水素原子の一部が、アルキル基、アリール基及びハロゲン原子からなる群より選ばれる1種以上の置換基で置換された芳香族ジカルボン酸が挙げられる。
芳香族ジオールとしては、例えば、4,4’-ジヒドロキシビフェニル、ハイドロキノン、レゾルシン、4,4’-ジヒドロキシジフェニルケトン、4,4’-ジヒドロキシジフェニルエーテル、ビス(4-ヒドロキシフェニル)メタン、1,2-ビス(4-ヒドロキシフェニル)エタン、4,4’-ジヒドロキシジフェニルスルホン、4,4’-ジヒドロキシジフェニルチオエーテル、2,6-ジヒドロキシナフタレン、1,5-ジヒドロキシナフタレンが挙げられる。また、これらの芳香族ジオールの芳香環にある水素原子の一部が、アルキル基、アリール基及びハロゲン原子からなる群より選ばれる1種以上の置換基で置換された芳香族ジオールが挙げられる。
好適な液晶ポリエステルは、下記式(1)で表される繰返し単位と、下記式(2)で表される繰返し単位と、下記式(3)で表される繰返し単位とを有し、全繰返し単位に対する2,6-ナフチレン基を含む繰返し単位の含有率が40モル%以上75モル%以下である。全繰返し単位に対する2,6-ナフチレン基を含む繰返し単位の含有率は、55モル%以上75モル%以下であると好ましい。
(1)-O-Ar1-CO-
(2)-CO-Ar2-CO-
(3)-X-Ar3-Y-
上述したように、Ar1、Ar2又はAr3で表される基が有する水素原子は、それぞれ独立に、ハロゲン原子、アルキル基又はアリール基で置換されていてもよい。
樹脂組成物は、充填材(フィラー)を含む。充填材は、有機フィラーであってもよく、無機フィラーであってもよい。フィラーは、球状フィラーであってもよく繊維状フィラーであってもよく板状フィラーであってもよいが、板状フィラーが好ましい。
無機フィラーの含有率の上限値と下限値とは、任意に組み合わせることができる。
上述の樹脂組成物に含まれてもよいガラス繊維の数平均繊維長は、10μm以上2000μm以下であってよく、20μm以上1000μm以下であってよく、30μm以上800μm以下であってよく、40μm以上500μm以下であってよく、45μm以上400μm以下であってよい。
ガラス繊維の数平均繊維長の上限値と下限値とは、任意に組み合わせることができる。
まず、パイプの材料である液晶ポリエステル樹脂組成物をペレット化し、得られたペレットを射出成形して、100mm×100mm×1.6mmの平板を2枚成形する。
弾性率の測定条件は、スパン間距離=(試験片厚み(単位:mm))×15.6mm、試験速度=1mm/分とする。
ガラス繊維の直径の上限値と下限値とは、任意に組み合わせることができる。
樹脂組成物におけるガラス繊維の含有率は、液晶ポリエステル100質量部に対して、0質量部を超え100質量部以下であることが好ましく、10質量部以上100質量部以下であることがより好ましく、10質量部以上70質量部以下であることがさらに好ましく。20質量部以上60質量部以下であることがよりさらに好ましい。
樹脂組成物に含まれてもよいタルクとしては、水酸化マグネシウムとケイ酸塩鉱物からなる鉱物の粉砕物が挙げられる。タルクは、4原子のケイ素(Si)酸化物が形成する4個の四面体構造間に、3個のマグネシウム(Mg)酸化・水酸化物が構成する八面体構造を挟み込んだ構造を形成したものであってよい。
[測定条件]
粒子屈折率:1.59-0.11
分散媒:水
分散媒屈折率:1.33
マイカとは、アルミニウム、カリウム、マグネシウム、ナトリウム、鉄等を含んだケイ酸塩鉱物の粉砕物である。3原子のケイ素(Si)と1原子のアルミニウム(Al)の酸化物が形成する4個の四面体構造間に、2個もしくは3個の金属酸化・水酸化物が構成する八面体構造を挟み込んだ構造を形成した鉱物である。
[測定条件]
粒子屈折率:1.57-0.1i
分散媒:水
分散媒屈折率:1.33
パイプの伸長部から、延在方向に10mm長で円環状の試験片を4個切り出す。得られた試験片について、万能試験機(テンシロンRTG-1250、株式会社エー・アンド・デイ製)を用い、試験速度5mm/分の測定条件で引張破壊強度(単位:N)を測定する。試験片4個それぞれについて引張試験における最大応力を測定し、測定値の平均値を引張破壊強度(単位:N)とする。
パイプ1の全長の上限値と下限値とは任意に組み合わせることができる。
パイプ1の外径の上限値と下限値とは任意に組み合わせることができる。
パイプ1の外径に対する内径の比について、上限値と下限値とは任意に組み合わせることができる。
パイプの厚さは、パイプの測定部位を切断して断面を作製し、断面をマイクロスコープ(株式会社キーエンス社製「VHX-1000」)で観察して測定する。パイプの外径と内径の差をパイプ厚さ(単位:mm)とする。パイプの厚さの測定は、延在方向の任意の5~10か所のそれぞれにおいて、周方向Cに略等間隔の4か所で行う。測定値の算術平均値をパイプの厚さとする。
上述の方法で測定部位の断面を観察し、延在方向の任意の5~10か所の測定部位それぞれにおいて、周方向Cに略等間隔の4か所で厚さを測定したときの、全測定点での厚さの最大値と最小値とを求める。得られた最大値と最小値との差を、パイプの厚さのばらつき(単位:mm)とする。
なお、「曲率半径」は、湾曲部1Rの外側表面のうち、湾曲が最も大きくなる視点から湾曲部1Rを見たときの凹側の部分を測定して求められる。
樹脂組成物の溶融粘度は、上述した(溶融粘度の測定方法)に従って測定した。
樹脂組成物の流動開始温度は、上述した(流動開始温度の測定方法)に従って測定した。
撹拌装置、トルクメータ、窒素ガス導入管、温度計及び還流冷却器を備えた反応器に、6-ヒドロキシ-2-ナフトエ酸1034.99g(5.5モル)、2,6-ナフタレンジカルボン酸378.33g(1.75モル)、テレフタル酸83.07g(0.5モル)、
ヒドロキノン272.52g(2.475モル)、無水酢酸1226.87g(12モル)及び触媒として1-メチルイミダゾール0.17gを入れた。なお、トルクメータは、撹拌装置に加わる負荷を測定する装置である。
撹拌装置、トルクメータ、窒素ガス導入管、温度計及び還流冷却器を備えた反応器に、p-ヒドロキシ安息香酸994.5g(7.2モル)、4,4’-ジヒドロキシビフェニル446.9g(2.4モル)、テレフタル酸299.0g(1.8モル)、イソフタル酸99.7g(0.6モル)及び無水酢酸1347.6g(13.2モル)を入れた。
板状フィラー1:マイカ(J-31M(ヤマグチマイカ社製、体積平均粒径35μm))
板状フィラー2:タルク(GH50(林化成株式会社製、体積平均粒径22μm))
繊維状フィラー:ガラス繊維(CS03JAPX-1(オーウェンスコーニング社製、繊維径:10μm、繊維長:3mm)
下記表1に示す割合で、液晶ポリエステル、フィラーを混合した液晶ポリエステル樹脂組成物を、スクリュー直径30mmの同方向回転2軸押出機(池貝鉄工社製「PCM-30」)に供給し、溶融混練してペレット化した。これにより、実施例1,2、比較例1のペレットを得た。表中の数値は、質量部を示す。
B/A≦10 …(A)
(Aは、液晶ポリエステル樹脂組成物の流動開始温度+20℃における溶融粘度である。
Bは、液晶ポリエステル樹脂組成物の流動開始温度における溶融粘度である。)
曲げ弾性率は、表1に示す割合で、液晶ポリエステル、フィラーを混合した液晶ポリエステル樹脂組成物を用い、上述した(曲げ弾性率の測定方法)に従って測定した。
パイプの引張破壊強度は、上述した(引張破壊強度の測定方法)に従って測定した。
パイプの厚さは、パイプの測定部位を切断して断面を作製し、上述した(パイプ厚さの測定方法)に従って測定した。
なお、実施例1,2、比較例1において、断面を作製する「パイプの測定部位」は、実施例1,2では延在方向の任意の7か所、比較例1では延在方向の任意の6か所とした。実施例の測定部位のうち、7箇所中5箇所、比較例の測定部位のうち、6箇所中4箇所は湾曲部であった。
パイプの厚さのばらつきは、上述した(厚さのばらつきの測定方法)に従って測定した。
算術平均粗さ(Ra)は、上述した(算術平均粗さ(Ra)の測定方法)に従って測定した。
Claims (7)
- 液晶ポリエステル樹脂組成物を形成材料とするパイプであって、
前記パイプは、湾曲部を有し、
前記液晶ポリエステル樹脂組成物の溶融粘度は、下記式(A)を満たし、
前記パイプの延在方向における内側表面の算術平均粗さ(Ra)が0.2μm以上5μm以下である樹脂製パイプ。
B/A≦10 …(A)
(Aは、前記液晶ポリエステル樹脂組成物の流動開始温度+20℃における溶融粘度である。
Bは、前記液晶ポリエステル樹脂組成物の流動開始温度における溶融粘度である。) - 前記液晶ポリエステル樹脂組成物が、下記式(1)で表される繰返し単位と、下記式(2)で表される繰返し単位と、下記式(3)で表される繰返し単位と、を有する液晶ポリエステルを含み、
前記液晶ポリエステルは、全繰返し単位に対する2,6-ナフチレン基を含む繰返し単位の含有率が40モル%以上75モル%以下である請求項1に記載の樹脂製パイプ。
(1)-O-Ar1-CO-
(2)-CO-Ar2-CO-
(3)-X-Ar3-Y-
(式中、Ar1は2,6-ナフチレン基、1,4-フェニレン基又は4,4’-ビフェニリレン基を表し、Ar2及びAr3はそれぞれ独立に、2,6-ナフチレン基、1,4-フェニレン基、1,3-フェニレン基又は4,4’-ビフェニリレン基を表す。
X及びYは、それぞれ独立に、酸素原子又はイミノ基(-NH-)を表す。
Ar1、Ar2又はAr3で表される基が有する水素原子は、それぞれ独立に、ハロゲン原子、アルキル基又はアリール基で置換されていてもよい。) - 前記液晶ポリエステル樹脂組成物が、板状フィラーを含む請求項1又は2に記載の樹脂製パイプ。
- 全長が300mm以上、外径が5mm以上、外径に対する内径の比が0.6以上1未満である請求項1から3のいずれか1項に記載の樹脂製パイプ。
- 延在方向の任意の5~10か所の測定部位それぞれにおいて、周方向に略等間隔の4か所で厚さを測定したときの、全測定点での厚さの最大値と最小値との差が、500μm以下である請求項1から4のいずれか1項に記載の樹脂製パイプ。
- 前記湾曲部は、曲率半径が10mm以下である部分を有する請求項1から5のいずれか1項に記載の樹脂製パイプ。
- 前記Aは、5Pa・s以上200Pa・s以下である請求項1から6のいずれか1項に記載の樹脂製パイプ。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07156210A (ja) * | 1993-12-02 | 1995-06-20 | Nippon Petrochem Co Ltd | 射出成形金型および方法 |
JPH08229992A (ja) * | 1995-02-23 | 1996-09-10 | Rp Topla Ltd | 中空成形装置 |
JP2000063503A (ja) * | 1998-06-08 | 2000-02-29 | Sumitomo Chem Co Ltd | 芳香族液晶性ポリエステル樹脂およびその製造方法、並びに、芳香族液晶性ポリエステル樹脂フィルムおよびその製造方法 |
JP2009281636A (ja) | 2008-05-21 | 2009-12-03 | Rp Topla Ltd | 樹脂製熱交換器ユニット及びその製造方法、並びに熱交換器 |
US20120015066A1 (en) * | 2004-01-06 | 2012-01-19 | Iowa State University Research Foundation, Inc. | Polymer mortar composite pipe material and manufacturing method |
JP2013056481A (ja) * | 2011-09-08 | 2013-03-28 | Asahi Kasei Chemicals Corp | 樹脂成形体、曲管射出成形用型及び曲管射出成形方法 |
JP2020191506A (ja) | 2019-05-20 | 2020-11-26 | シャープ株式会社 | 欠陥画素検出装置および撮像装置、並びに欠陥画素検出方法 |
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07156210A (ja) * | 1993-12-02 | 1995-06-20 | Nippon Petrochem Co Ltd | 射出成形金型および方法 |
JPH08229992A (ja) * | 1995-02-23 | 1996-09-10 | Rp Topla Ltd | 中空成形装置 |
JP2000063503A (ja) * | 1998-06-08 | 2000-02-29 | Sumitomo Chem Co Ltd | 芳香族液晶性ポリエステル樹脂およびその製造方法、並びに、芳香族液晶性ポリエステル樹脂フィルムおよびその製造方法 |
US20120015066A1 (en) * | 2004-01-06 | 2012-01-19 | Iowa State University Research Foundation, Inc. | Polymer mortar composite pipe material and manufacturing method |
JP2009281636A (ja) | 2008-05-21 | 2009-12-03 | Rp Topla Ltd | 樹脂製熱交換器ユニット及びその製造方法、並びに熱交換器 |
JP2013056481A (ja) * | 2011-09-08 | 2013-03-28 | Asahi Kasei Chemicals Corp | 樹脂成形体、曲管射出成形用型及び曲管射出成形方法 |
JP2020191506A (ja) | 2019-05-20 | 2020-11-26 | シャープ株式会社 | 欠陥画素検出装置および撮像装置、並びに欠陥画素検出方法 |
Non-Patent Citations (1)
Title |
---|
"Liquid Crystal Polymers - Synthesis/Molding/Application", 5 June 1987, CMC PUBLISHING CO., LTD, pages: 95 |
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EP4249203A1 (en) | 2023-09-27 |
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