WO2019045032A1 - Composition de résine, article moulé et procédé de production dudit article moulé - Google Patents

Composition de résine, article moulé et procédé de production dudit article moulé Download PDF

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Publication number
WO2019045032A1
WO2019045032A1 PCT/JP2018/032288 JP2018032288W WO2019045032A1 WO 2019045032 A1 WO2019045032 A1 WO 2019045032A1 JP 2018032288 W JP2018032288 W JP 2018032288W WO 2019045032 A1 WO2019045032 A1 WO 2019045032A1
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Prior art keywords
resin composition
molded article
iso
measured
mold
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PCT/JP2018/032288
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English (en)
Japanese (ja)
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容史 藤田
啓佑 山根
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ポリプラスチックス株式会社
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Application filed by ポリプラスチックス株式会社 filed Critical ポリプラスチックス株式会社
Priority to JP2018564428A priority Critical patent/JP6572398B2/ja
Priority to CN201880053908.5A priority patent/CN111051436B/zh
Publication of WO2019045032A1 publication Critical patent/WO2019045032A1/fr

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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
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds

Definitions

  • the present invention relates to a resin composition, a molded article and a method for producing the same.
  • a bulge or a spool As parts for fluid piping, one having a shape bulged to the outside, which is called a bulge or a spool, is known in a part of a pipe body.
  • the bulging portion constitutes a so-called undercut which can not be released from the mold as it is.
  • the mold is disassembled into a plurality of molds to release the molded product, even a molded product having an undercut can be easily released from the mold without deformation.
  • a plurality of parting lines which are joint portions of the mold are formed, and burrs are easily generated in the portions.
  • the burrs When burrs are generated, the burrs may be sandwiched in the fitting portion with other parts, in which case a gap is generated in the fitting portion with other parts, which causes the fluid inside to leak out.
  • the other parts are made of a soft material such as a rubber hose, the burrs of the piping parts may damage the other parts made of the soft material.
  • the forced removal method in which a parting line is hard to be formed in the production of fluid piping components.
  • the forced removal method when producing piping parts with high bulges or spools, when making the mold release from the mold, it has to be deformed more greatly, and the molded article after release has deformation. It may remain, the surface of the molded article may be scratched, and furthermore, the molded article may be cracked.
  • Patent Document 1 discloses a dynamic pressure bearing provided with a bearing member obtained by injection molding a resin having an elastic modulus of 6 GPa or more and forcibly releasing it from a mold. Patent Document 1 also discloses that a material having a low elastic modulus at normal temperature may reduce deformation at the time of mold release, but it is mainly R-shaped at the corner portion of the forced removal portion (portion deformed at the time of mold release) Relates to a technique for suppressing deformation by In addition, since the groove depth of the forced removal portion is also assumed to be very small such as 2 to 12 ⁇ m, no mention is made of the forced removal accompanied by larger deformation. Furthermore, no consideration is given to the behavior in a high temperature environment such as the processing temperature at the time of mold release. Japanese Patent Application Laid-Open No. 11-236904
  • the present invention can prevent deformation from remaining in a molded article after mold release even when the mold is released from the mold by an forced punching method, and for the forced punched article having excellent rigidity of the obtained molded article. It is an object of the present invention to provide a resin composition, a forced extrusion molding using the same, and a method for producing the same.
  • One embodiment of the present invention is as follows.
  • the flexural modulus at 23 ° C. measured according to ISO 178 is 8 GPa or more, and the flexural modulus measured at an environmental temperature of 150 ° C. according to the flexural test method prescribed in ISO 178 according to ISO 178
  • a resin composition for an forcibly drawn molded article which is less than 40% of the flexural modulus measured at 23 ° C.
  • the resin composition according to [1] having a flexural modulus of 5 GPa or less measured at an environmental temperature of 150 ° C. according to a bending test method prescribed in ISO 178.
  • a molded article comprising: a process of injection molding the resin composition according to any one of [1] to [8]; and a process of releasing the obtained molded article from a mold by forced removal.
  • Production method [13] The production method according to [12], wherein a molded article having a bulging portion with a height of 0.5 mm or more is obtained.
  • the present invention it is possible to prevent deformation from remaining in the molded product after mold release even when the mold is released from the mold by the forced release method, and also the obtained molded product has excellent rigidity. It is possible to provide a product resin composition, a forced extrusion molded product using the same, and a method for producing the same.
  • the resin composition for forceless molded articles (hereinafter, also simply referred to as “resin composition”) is a resin composition suitable for the production of forceless molded articles, or a resin composition used for the production of forceless molded articles. is there.
  • the "forced molded article” refers to a molded article obtained by causing an injection molded molded article to be released from a mold by a forced drawing method.
  • releasing a molded product from a mold by a forced removal method is also simply referred to as “forced removal”.
  • FIG. 2 is an explanatory view showing the movement of the mold and the resulting molded product when the mold is released from the mold by the forced removal method. As shown in FIG.
  • the mold is released from the mold 20 by protruding from the mold (FIG. 2 (c), (d)).
  • the bulging portion 101 hits the inner surface of the movable side mold 21 when it is protruded, whereby the tip portion of the molded product 100 is deformed to be bent inward.
  • the bulging portion 101 passes through the end of the movable mold 21, the forcibly molded article 100 returns to the original state.
  • the tip portion of the forcibly molded article 100 is bent more toward the inside. .
  • the rigidity or toughness of the material it may remain deformed after mold release, the surface may be scratched, or the molded article may be cracked. Therefore, it has been studied to make a molded article flexible by using a material having a low elastic modulus, thereby preventing the deformation from remaining after forced removal. However, if the modulus of elasticity of the material is low, the rigidity required for the resulting product may not be satisfied.
  • the elastic modulus of the material at normal temperature is low, the elastic modulus at a high temperature of 100 ° C. or more, such as the processing temperature at mold release where forced removal is actually performed, is considered. It turned out that the deformation was not necessarily suppressed after forced removal.
  • the inventor further studies and sets the bending elastic modulus at normal temperature within a predetermined range, and sets the bending elastic modulus at normal temperature and the bending elastic modulus at high temperature to a predetermined relationship, and it is about several millimeters.
  • the resin composition for forcefully molded articles according to the present embodiment has a flexural modulus at 23 ° C. (hereinafter, also simply referred to as “a flexural modulus at 23 ° C.”) measured according to ISO 178 of 8 GPa or more.
  • the flexural modulus measured at 150 ° C. according to the flexural test method specified in ISO 178 (hereinafter also referred to simply as “flexural modulus at 150 ° C.”) is measured at 23 ° C. according to ISO 178.
  • Less than 40% of flexural modulus is measured when the flexural modulus at 23 ° C. is less than 8 GPa, or when the flexural modulus at 150 ° C. is 40% or more of the flexural modulus at 23 ° C., the effect of enhancing the rigidity of the molded article after mold release from the mold It is difficult to simultaneously achieve the effect of preventing deformation of the molded product due to mold release.
  • the flexural modulus at 23 ° C. is preferably 8.5 GPa or more, more preferably 9.5 GPa or more, from the viewpoint of enhancing the rigidity of the molded article. It can also be 10 GPa or more, or 12 GPa or more.
  • the upper limit of the flexural modulus at 23 ° C. is not particularly limited, but when performing secondary processing and the like, it can be 20 GPa or less or 15 GPa or less in terms of processability.
  • the ratio of the flexural modulus at 150 ° C. to the flexural modulus at 23 ° C. is preferably 35% or less, more preferably 30% or less.
  • the lower limit value is not particularly limited, but can be 10% or more or 20% or more in terms of suppressing deformation due to compression or stretching in the axial direction of the molded product due to protrusion during mold release.
  • the flexural modulus at 150 ° C. is preferably 5 GPa or less, more preferably 4 GPa or less, and still more preferably 3 GPa or less, from the viewpoint of preventing deformation of the molded product due to forced removal.
  • the lower limit value of the bending elastic modulus at 150 ° C. is not particularly limited, but can be 1 GPa or more (for example, 2 GPa or more) at the point of suppressing deformation of the molded product in the axial direction by protrusion during mold release.
  • a bending fracture strain (hereinafter, also simply referred to as a “bending fracture strain at 150 ° C.”) measured at an environmental temperature of 150 ° C. according to a bending test method prescribed in ISO 178. It is preferably 4% or more, more preferably 5% or more, and still more preferably 5.5% or more.
  • the upper limit of the bending strain at 150 ° C. is not particularly limited.
  • the adjustment of the bending elastic modulus and the bending rupture strain is not particularly limited, and various kinds of the filler, the additive, etc., the kind, the content, etc., of the kind, the molecular weight, the melt viscosity, the content, etc. It can do by doing.
  • adding an inorganic filler such as glass fiber is mentioned as a method of increasing the bending elastic modulus, and in order to lower the bending elastic modulus, addition of a soft material such as an elastomer or high molecular weight thermoplastic resin There is a method of using a thing.
  • the resin composition according to the present embodiment is from the mold by the slide method of the molded article after release from the mold by the forced removal method in that the deformation of the molded product at the time of release by the forced removal is further suppressed.
  • the deformation ratio to the molded article after release is preferably 40% or less, and more preferably 38% or less.
  • the deformation rate can be calculated from the following equation as described in the examples described later. ((A ⁇ B) / 2 h) ⁇ 100 (%)
  • A is a bulging part outer diameter (unit: mm) of a molded article manufactured using a slide structure mold
  • B is a bulging part of a molded article manufactured using a forced removal mold It is an outer diameter (unit: mm).
  • h is the height of the bulging portion of the molded product by the slide structure mold, and from the outer diameter A of the bulging portion and the outer diameter R1 of the cylindrical portion other than the bulging portion (see FIG. 1 (b))
  • (AR1) / 2 is a value (unit: mm).
  • the resin composition according to the present embodiment has a deformation amount of 5.9 mm at 150 ° C. according to the bending test method prescribed in ISO 178 in that the deformation of the molded product due to forced removal is further suppressed. (5.9-Y) using the residual deformation amount Y (mm) measured after leaving for 10 minutes at ambient temperature 150 ° C after applying load until strain amount is reached and then unloading.
  • the deformation recovery rate calculated by /5.9 ⁇ 100 (%) is preferably 80% or more, and more preferably 82% or more.
  • the deformation recovery rate By setting the deformation recovery rate to 80% or more, it is possible not only to suppress initial deformation due to mold release, but also in molded articles used by fitting and fastening with other members, such as fluid piping port parts.
  • the present invention is also advantageous in terms of resistance to deformation due to strain received by fitting or fastening with the members.
  • the resin contained in the resin composition is not particularly limited as long as it is a thermoplastic resin that can be used for injection molding.
  • the thermoplastic resin include polyamide, polyester, polyethylene terephthalate (PET), acrylic, polyolefin, aramid, polyethylene naphthalate, polybutylene terephthalate, polyarylene sulfide, polyacetal, liquid crystal polymer, polyimide and the like. These can be used alone or in combination of two or more. Among them, it is preferable to contain polyarylene sulfide and polyamide in that molded articles having excellent heat resistance and chemical resistance can be obtained. Therefore, it is preferable that the resin contains at least one resin selected from polyarylene sulfide and polyamide depending on the application.
  • polyarylene sulfides having molecular structures substantially linear and having no branching or crosslinking structure and structures having branching or crosslinking depending on the production method are known, and any of these types can be used. It is also good.
  • polyamide examples include aliphatic polyamides such as polyamide 3, polyamide 4, polyamide 46, polyamide 6, polyamide 66, polyamide 610, polyamide 612, polyamide 11, polyamide 12 and the like, aromatic dicarboxylic acids (eg, terephthalic acid and / or isophthalic acid) ) Obtained from aliphatic diamines (eg, hexamethylene diamine), polyamides obtained from aliphatic dicarboxylic acids (eg, adipic acid) and aromatic diamines (eg, metaxylylene diamine), aromatics and fats And polyamides obtained from aliphatic dicarboxylic acids (for example, terephthalic acid and adipic acid) and aliphatic diamines (for example, hexamethylene diamine) and copolymers thereof.
  • aromatic dicarboxylic acids eg, terephthalic acid and / or isophthalic acid
  • polyamide based block copolymers linked to polyamide hard segments and other soft segments such as polyether components are also possible.
  • aromatic polyamides using at least one aromatic compound as a monomer are preferable.
  • the melt viscosity of the resin contained in the resin composition is preferably 40 Pa ⁇ s or more and 260 Pa ⁇ s or less measured at 310 ° C. and a shear rate of 1216 sec ⁇ 1 , and is 100 Pa ⁇ s or more and 200 Pa ⁇ s or less It is more preferable that the pressure be 120 Pa ⁇ s or more and 180 Pa ⁇ s or less. By setting it in this range, it is possible to suppress deformation and cracking at the time of mold release while securing good formability.
  • the resin composition can contain at least one resin having a melt viscosity in the above range.
  • the content of the resin is preferably 40% by mass or more, more preferably 50% by mass or more, and more preferably 60% by mass or more in the total resin composition in terms of sufficiently exhibiting the characteristics of the resin. More preferable.
  • the resin composition may contain an inorganic filler to increase the strength of the resulting molded article.
  • an inorganic filler for example, a fibrous, particulate or plate-like inorganic filler can be used.
  • fibrous inorganic fillers include glass fibers, asbestos fibers, silica fibers, silica / alumina fibers, alumina fibers, zirconia fibers, boron nitride fibers, silicon nitride fibers, boron fibers, potassium titanate fibers, and further stainless steel, aluminum, titanium And fibrous materials of metals 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, etc.
  • silicate oxidized Oxides of metals such as iron oxide, 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, Silicon nitride, boron nitride, various metal powders and the like can be exemplified.
  • mica cuttle-fish, glass flakes, various metal foil etc. can be illustrated.
  • These inorganic fillers can be used alone or in combination of two or more.
  • the size of the inorganic filler is not particularly limited as long as the effect of the present invention is not impaired.
  • the average diameter of the fibrous filler can be about 1 ⁇ m to 30 ⁇ m (preferably 3 ⁇ m to 20 ⁇ m), and the average length is, for example, 100 ⁇ m to 5 mm (preferably 300 ⁇ m to 4 mm, more preferably 500 ⁇ m to 3). .5 mm).
  • the average primary particle diameter of the plate-like or particulate filler can be, for example, about 1 ⁇ m to 500 ⁇ m, preferably about 3 ⁇ m to 500 ⁇ m, or about 5 ⁇ m to 500 ⁇ m. It may be about 10 ⁇ m to 500 ⁇ m, or about 15 ⁇ m to 100 ⁇ m.
  • the average diameter and the average length of the fibrous filler, and the average primary particle diameter of the plate-like or powder-like filler are the fibrous filler, plate-like or powder-like filler before being blended in the resin composition.
  • the image taken with a CCD camera and calculated by weighted averaging are the fibrous filler, plate-like or powder-like filler before being blended in the resin composition.
  • the content of the inorganic filler is not particularly limited, but it is 20 to 150 parts by weight with respect to 100 parts by mass of the above-described resin in that the strength of the molded article is further increased while preventing deformation from remaining in the molded article after forced removal.
  • the amount is preferably in the range of 30 to 120 parts by mass, and more preferably in the range of 40 to 100 parts by mass.
  • the resin composition may contain a thermoplastic elastomer in order to adjust the flexural modulus and the flexural breaking strain.
  • the type of the thermoplastic elastomer is not particularly limited, and examples thereof include olefin elastomers, styrene elastomers, polyester elastomers, polyamide elastomers and urethane elastomers.
  • olefin elastomer are copolymers having ethylene and / or propylene as the main component, and specifically, ethylene-propylene copolymers, ethylene-butene copolymers, ethylene-octene copolymers, ethylene -Propylene-butene copolymer, ethylene-propylene-diene copolymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-glycidyl methacrylate copolymer, etc. may be mentioned, but it is limited thereto It is not a thing.
  • styrenic elastomers include block copolymers comprising a polymer block mainly composed of a vinyl aromatic compound such as styrene and a polymer block mainly composed of a nonhydrogenated and / or hydrogenated conjugated diene compound. However, it is not limited to this.
  • polyester elastomers examples include aromatic polyesters such as polyethylene terephthalate and polybutylene terephthalate as hard segments, polyethers such as polyethylene glycol and polytetramethylene glycol, or aliphatic polyesters such as polyethylene adipate, polybutylene adipate, and polycaprolactone as soft.
  • aromatic polyesters such as polyethylene terephthalate and polybutylene terephthalate as hard segments
  • polyethers such as polyethylene glycol and polytetramethylene glycol
  • aliphatic polyesters such as polyethylene adipate, polybutylene adipate, and polycaprolactone as soft.
  • polyamide-based elastomers include, but are not limited to, block copolymers in which nylon 6, nylon 66, nylon 11, nylon 12 or the like is a hard segment and polyether or aliphatic polyester is a soft segment. It is not a thing.
  • urethane elastomers include reaction of diisocyanates such as 4,4'-diphenylmethane diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, tolylene diisocyanate and hexamethylene diisocyanate with glycols such as ethylene glycol and tetramethylene glycol.
  • a polyether or polyethylene adipate such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol or an aliphatic polyester such as polybutylene adipate or polycaprolactone as a soft segment
  • the content of the thermoplastic elastomer is preferably 1 to 50 parts by mass, more preferably 5 to 30 parts by mass with respect to 100 parts by mass of the resin.
  • the resin composition is, if necessary, an antioxidant, a weathering stabilizer, a molecular weight modifier, a UV absorber, an antistatic agent, a dye, a pigment, a lubricant, a crystallization accelerator, a crystal nucleating agent, a near infrared absorber And flame retardants, flame retardant aids, coloring agents and the like.
  • the form of the resin composition may be a powder-particle mixture, or may be a melt mixture (melt-kneaded product) such as pellets.
  • the method for producing the resin composition is not particularly limited, and the resin composition can be produced using equipment and methods known in the art. For example, necessary components can be mixed and kneaded using a single- or twin-screw extruder or other melt-kneading apparatus to prepare molding pellets. A plurality of extruders or other melt kneading apparatuses may be used. Moreover, all the components may be simultaneously fed from the hopper, or some components may be fed from the side feed port.
  • the resin composition concerning this embodiment can be used for various uses.
  • the resin composition can prevent deformation of the molded article after mold release even when it is released from the mold by the forced removal method, and can satisfy the rigidity of the obtained molded article, so injection
  • It is suitable for the production of a molded article (forced extrusion molded article) which is released from the mold by the forced extrusion method after molding.
  • a molded article forced extrusion molded article
  • it can be used for fluid piping component applications (applications for joint components of fluid piping, applications for port components for fluid piping), etc., as the forced extrusion molded product application.
  • fluid piping parts use for example, cold and warm water piping parts use can be mentioned.
  • the forced removal molded product according to the present embodiment is a forced removal molded product molded using the above-described resin composition. That is, it is a molded article obtained by injection-molding the above-described resin composition and then releasing the resin composition from the mold according to a forced removal method. It can be judged whether or not it is a force-free molded article based on whether or not linear marks or burrs derived from a parting line which is a joint of a mold exist on the surface of the molded article.
  • the shape and size of the forcibly punched product are not particularly limited, when it is used as a fluid piping component, for example, a substantially cylindrical fluid piping component having an outer diameter of 8 to 40 mm, an inner diameter of 4 to 36 mm, and a height of 25 to 40 mm can do.
  • the forced compression molding may have a shape in which the central portion bulges more than the tip portion, and may be subjected to general tip processing such as bulge, bead, and spool.
  • the forced compression molding may have a bulging portion having a height of 0.5 mm or more and 3 mm or less on the surface.
  • the “height” of the bulging part is, as shown in FIG. 1 (b), the outer diameter A (see FIG. 3) of the bulging part 11 of the forcibly-dropped molded article 10 and the cylindrical part other than the bulging part.
  • the value is obtained by (A ⁇ R1) / 2 from the outer diameter R1.
  • the bulging portion may be formed on at least a part of the outer periphery of the forced extrusion molded product, or may be formed over the entire periphery.
  • the bulging portion When the bulging portion constitutes a bulge, a bead, a spool or the like, the bulging portion may be formed in the vicinity of an end portion on one side of the forced extrusion molded product. Forced extrusion molded articles having bulges, beads, spools and the like can be suitably used as fluid piping port parts.
  • the forced extrusion molded product has the outer surface of the portion formed on the edge portion of the movable side mold protruding outward in the form of a gently curved flange.
  • the edge of the movable mold used in injection molding is chamfered As it has been formed, it is formed in a substantially arc shape.
  • the radius of curvature r of the flange-like portion is preferably 0.1 mm or more.
  • FIG. 1 shows an example of the forced compression molding according to the present embodiment.
  • FIG. 1 (a) is a perspective view of the forced extrusion molded article 10
  • (b) is a cross-sectional view taken along the line XX 'in (a)
  • (c) is a Y enlarged view in (b)
  • (D) is a Z view enlarged view in (b).
  • the forced extrusion molded article 10 has an outer diameter R1 (the outer diameter of the cylindrical portion without the bulging portion 11 and the flange portion not formed) of 38 mm and the inner diameter R2 Is 32.8 mm and the height H is 35 mm.
  • a mountain-shaped bulging portion 11 having a height h of 1 mm, an angle ⁇ 1 of 30 degrees, and an angle ⁇ 2 of 15 degrees is formed annularly at the end of one side of the forcibly molded article 10 over the entire outer circumference. It is done.
  • the end on the opposite side to the side on which the bulging portion 11 is formed of the forcibly molded article 10 has a shape projecting outward in the form of a flange so as to form a gentle curve.
  • the radius of curvature r of the flange-like portion is 3 mm.
  • the method of manufacturing the forcibly molded article includes the steps of injection molding the above-described resin composition, and releasing the obtained molded product from the mold by a forcedly drawing method.
  • the mold temperature in the step of injection molding can be appropriately set according to the resin contained in the resin composition. For example, in the case of containing PPS and / or aromatic polyamide, the mold temperature can be about 130 to 160 ° C. (eg, 150 ° C.).
  • a recess having a depth of 0.5 mm or more is provided on the inner surface of the mold corresponding to the bulging portion.
  • the edge portion of the cavity opening end is chamfered in an arc shape.
  • the cavity opening end is a portion corresponding to the end of the pipe, for example, when the forcibly punched molded product is used as a flow path piping component, the stress in consideration of the durability of the pipe itself Chamfering (R application) may be performed for the purpose of reducing concentration.
  • Such chamfering for stress concentration alleviation can be combined with chamfering of the edge part, but chamfering for suppressing damage to the bulging part has a curvature radius compared to chamfering for stress concentration alleviation The effect can be obtained even when (1) is small (for example, 1 mm or less).
  • the method of forcibly removing the molded product from the mold and releasing it may be that the molded product may be ejected (pushed out) using a movable ejector sleeve or the like provided in the mold, or the mold The molded product may be pulled out of the outside of the mold and released.
  • the melt viscosity of the polyarylene sulfide resin is a value measured at 310 ° C. and a shear rate of 1216 sec ⁇ 1 .
  • PPS 1 Polyplastics Co., Ltd., polyarylene sulfide resin having a melt viscosity of 50 Pa ⁇ s
  • PPS 2 Polyplastics Co., Ltd., a polyarylene sulfide resin having a melt viscosity of 150 Pa ⁇ s
  • PPS 3 Polyplastics Co., Ltd., a melt viscosity of 250 Pa ⁇ S polyarylene sulfide resin (thermoplastic elastomer) Sumitomo Chemical Co., Ltd.
  • bond first 7L an olefin elastomer (inorganic filler) containing ethylene, glycidyl methacrylate, and methyl acrylate as copolymer components Made by Nippon Electric Glass Co., Ltd., “ECS03T-717”, glass fiber with an average length of 3 mm and an average diameter of 13 ⁇ m, made by Potters Barrotini, “EMB-10”, glass beads with an average particle diameter of 5 ⁇ m, made by Toyo Fine Chemical Co., Ltd. "Whiteton P-30”, calcium carbonate with an average particle size of 5 ⁇ m
  • Examples 1 to 6, Comparative Examples 1 to 5 The components shown in Table 1 are dry-blended with the composition (parts by mass) shown in Table 1 and supplied from a hopper to a twin-screw extruder (made by Japan Steel Works Ltd.) having a 30 mm ⁇ screw and melt-kneaded at 320 ° C. The pellet-like resin composition was obtained.
  • the average diameter (the bulging portion outer diameter) is calculated from the outer peripheral shape measured along the bulging portion using a roundness measuring machine, Roncom NEX 100 SD-11, manufactured by Tokyo Seimitsu Co., Ltd. I asked.
  • FIG. 3 is an explanatory view of a method of measuring the deformation rate. As shown in FIG.
  • a (unit: mm) be the bulging portion outer diameter of the molded product by the slide structure mold
  • B (unit: mm) be the bulging portion outer diameter of the molded product by the forced removal die
  • A- Based on the value (unit: mm) obtained in R1) / 2 ((A ⁇ B) / 2 h) ⁇ 100 (%) was calculated, and this was used as the deformation rate.
  • FIG. 4 is an explanatory view of a method of measuring the deformation recovery rate.
  • the pellets of the resin composition obtained in the examples and comparative examples were dried at 140 ° C. for 3 hours, and then bent test pieces 200 (80 mm ⁇ in accordance with ISO 3167) at a cylinder temperature of 320 ° C. and a mold temperature of 150 ° C. 10 mm ⁇ 4 mm), and apply a load until the amount of deformation is 5.9 mm (additional strain 3.45%) at an environmental temperature of 150 ° C according to the bending test method specified in ISO 178.
  • the residual amount Y (mm) of deformation was measured after being left at an environmental temperature of 150 ° C. for 10 minutes. Using the residual deformation amount Y, (5.9-Y) /5.9 ⁇ 100 (%) was calculated, and this was used as the deformation recovery rate.
  • the resin compositions of Examples 1 to 6 have a deformation rate of 38% or less and can prevent deformation due to forced release of the forcibly molded article and have a large deformation recovery rate and other members. It is also advantageous in terms of resistance to deformation due to strain received by fitting or fastening. Furthermore, since the flexural modulus at 23 ° C. is 8 GPa or more, the molded article has excellent rigidity. That is, by setting the flexural modulus at normal temperature within a predetermined range, and by making the flexural modulus at normal temperature and the flexural modulus at high temperature into a predetermined relationship, the deformation due to the mold release of the forcibly cut molded article is prevented.
  • the deformation recovery rate is an index showing resistance to deformation, and originally the higher the elastic modulus, the larger the reaction force when deformed, and the larger the return when unloaded, ie, the deformation recovery
  • the modulus is considered to be proportional to the modulus of elasticity, this time, the material with a low modulus of elasticity unexpectedly has a higher deformation recovery rate.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Le problème décrit par la présente invention est de fournir : une composition de résine pour un article moulé par éjection par percussion avec laquelle il est possible d'empêcher que des déformations persistent dans un article moulé après le démoulage même lorsqu'il est démoulé par éjection par percussion, l'article moulé obtenu ayant une rigidité exceptionnelle ; un article moulé par éjection par percussion dans lequel est utilisée la composition de résine ; et un procédé de production associé. La solution selon l'invention porte sur une composition de résine pour un article moulé par éjection par percussion dans laquelle le module de flexion à 23 °C est de 8 GPa ou plus et le module de flexion à 150 °C est inférieur à 40 % du module de flexion à 23 °C. le module de flexion à 150 °C est de préférence de 5 GPa ou moins.
PCT/JP2018/032288 2017-08-31 2018-08-31 Composition de résine, article moulé et procédé de production dudit article moulé WO2019045032A1 (fr)

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CN201880053908.5A CN111051436B (zh) 2017-08-31 2018-08-31 树脂组合物、成型品和其制造方法

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021066166A (ja) * 2019-10-28 2021-04-30 有限会社 松▲崎▼製作所 アンダーカット形状を有する成形品を製造する成形用型及びアンダーカット形状を有する成形品の製造方法
WO2022075124A1 (fr) 2020-10-05 2022-04-14 Dic株式会社 Article moulé par extraction forcée, composition de résine de polysulfure d'arylène et procédé de production d'article moulé par extraction forcée
WO2024084884A1 (fr) * 2022-10-18 2024-04-25 Dic株式会社 Article moulé par extraction forcée, composition de résine de polysulfure d'arylène et procédé de production d'article moulé par extraction forcée

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6366597U (fr) * 1986-10-17 1988-05-02
JPH02155951A (ja) * 1988-12-09 1990-06-15 Mitsubishi Petrochem Co Ltd ポリフェニレンスルフィド樹脂組成物
JPH1036459A (ja) * 1996-07-22 1998-02-10 Hitachi Chem Co Ltd 不飽和ポリエステル樹脂組成物
JP2004351821A (ja) * 2003-05-30 2004-12-16 Asahi Kasei Chemicals Corp ガラス繊維強化樹脂組成物の製造方法およびその組成物
JP2009242673A (ja) * 2008-03-31 2009-10-22 Nippon Polypenco Ltd モノマーキャストナイロン成形体
JP2010233853A (ja) * 2009-03-31 2010-10-21 Toray Ind Inc 医療用具の液体ポート用栓体およびこれを用いた医療用具
JP2011032356A (ja) * 2009-07-31 2011-02-17 Ntn Corp 樹脂組成物およびその製造方法、ならびに、転がりおよびすべり軸受
JP2018141083A (ja) * 2017-02-28 2018-09-13 東レ株式会社 無理抜き射出成形用ポリフェニレンスルフィド樹脂組成物

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61283797A (ja) * 1985-06-10 1986-12-13 Nissan Motor Co Ltd 遠心圧縮機のインペラ
JPH068317Y2 (ja) * 1986-10-16 1994-03-02 日産自動車株式会社 インペラ
JP2007055057A (ja) * 2005-08-24 2007-03-08 Shin Kobe Electric Mach Co Ltd 樹脂射出成形品
JP2011161655A (ja) * 2010-02-04 2011-08-25 Toyota Motor Corp 樹脂射出成形品
WO2017010364A1 (fr) * 2015-07-10 2017-01-19 ポリプラスチックス株式会社 Composition de résine de sulfure de polyarylène et procédé pour réduire des substances adhérant à une filière à l'aide de celle-ci

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6366597U (fr) * 1986-10-17 1988-05-02
JPH02155951A (ja) * 1988-12-09 1990-06-15 Mitsubishi Petrochem Co Ltd ポリフェニレンスルフィド樹脂組成物
JPH1036459A (ja) * 1996-07-22 1998-02-10 Hitachi Chem Co Ltd 不飽和ポリエステル樹脂組成物
JP2004351821A (ja) * 2003-05-30 2004-12-16 Asahi Kasei Chemicals Corp ガラス繊維強化樹脂組成物の製造方法およびその組成物
JP2009242673A (ja) * 2008-03-31 2009-10-22 Nippon Polypenco Ltd モノマーキャストナイロン成形体
JP2010233853A (ja) * 2009-03-31 2010-10-21 Toray Ind Inc 医療用具の液体ポート用栓体およびこれを用いた医療用具
JP2011032356A (ja) * 2009-07-31 2011-02-17 Ntn Corp 樹脂組成物およびその製造方法、ならびに、転がりおよびすべり軸受
JP2018141083A (ja) * 2017-02-28 2018-09-13 東レ株式会社 無理抜き射出成形用ポリフェニレンスルフィド樹脂組成物

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021066166A (ja) * 2019-10-28 2021-04-30 有限会社 松▲崎▼製作所 アンダーカット形状を有する成形品を製造する成形用型及びアンダーカット形状を有する成形品の製造方法
JP7461002B2 (ja) 2019-10-28 2024-04-03 有限会社 松▲崎▼製作所 アンダーカット形状を有する成形品を製造する成形用型及びアンダーカット形状を有する成形品の製造方法
WO2022075124A1 (fr) 2020-10-05 2022-04-14 Dic株式会社 Article moulé par extraction forcée, composition de résine de polysulfure d'arylène et procédé de production d'article moulé par extraction forcée
KR20230048088A (ko) 2020-10-05 2023-04-10 디아이씨 가부시끼가이샤 강제 빼기 성형품, 폴리아릴렌 설파이드 수지 조성물 및 강제 빼기 성형품의 제조 방법
CN116075553A (zh) * 2020-10-05 2023-05-05 Dic株式会社 强制脱模成形品、聚芳硫醚树脂组合物和强制脱模成形品的制造方法
CN116075553B (zh) * 2020-10-05 2023-11-21 Dic株式会社 强制脱模成形品、聚芳硫醚树脂组合物和强制脱模成形品的制造方法
WO2024084884A1 (fr) * 2022-10-18 2024-04-25 Dic株式会社 Article moulé par extraction forcée, composition de résine de polysulfure d'arylène et procédé de production d'article moulé par extraction forcée

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