WO2021117531A1 - Composition de résine et article moulé utilisant ladite composition - Google Patents

Composition de résine et article moulé utilisant ladite composition Download PDF

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Publication number
WO2021117531A1
WO2021117531A1 PCT/JP2020/044485 JP2020044485W WO2021117531A1 WO 2021117531 A1 WO2021117531 A1 WO 2021117531A1 JP 2020044485 W JP2020044485 W JP 2020044485W WO 2021117531 A1 WO2021117531 A1 WO 2021117531A1
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Prior art keywords
resin
resin composition
thv
film
inorganic acid
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PCT/JP2020/044485
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English (en)
Japanese (ja)
Inventor
憲朗 安本
敬司 ▲高▼野
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デンカ株式会社
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Priority to JP2021563862A priority Critical patent/JPWO2021117531A1/ja
Publication of WO2021117531A1 publication Critical patent/WO2021117531A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/20—Homopolymers or copolymers of hexafluoropropene

Definitions

  • the present invention relates to a resin composition and a molded product using the composition. More specifically, the present invention relates to a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer resin composition and a film-like or sheet-like molded product using the same.
  • THV resin tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer
  • THV resin tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer
  • THV resin is excellent in chemical resistance, stain resistance, water repellency, insulation, and low friction resistance. Therefore, it is used for transport hoses for chemicals, oils, fuels, gaskets, etc. Further, since the THV resin can be formed into a film by melt molding, it is used in various applications such as a member film for a solar cell, a release film, and a film for a glass interlayer film.
  • Patent Document 1 discloses a release film mainly composed of THV resin. Further, in the document, it is described that the above-mentioned film is used as a release film in the semiconductor manufacturing process.
  • Patent Document 2 describes a fuel hose in which THV resin is used for a layer in which low fuel permeability is required.
  • the THV resin when the THV resin is melt-molded, the THV resin decomposes under high temperature conditions, so that acid gas is likely to be generated, and there is a concern that the members used in the molding equipment may be deteriorated or rusted. That is, it is desirable to take special measures against the generation of acid gas, but for THV resins in general-purpose molding equipment that molds general thermoplastic resins without such measures. Melt molding is not preferred. In addition, there are molding equipment with improved corrosion resistance as the above-mentioned measures, but these measures are not always easily introduced in consideration of cost and the like.
  • a heat stabilizer composed of an organic substance such as an antioxidant may be added.
  • the heat stabilizer may vaporize, or the THV resin and the heat stabilizer may be poorly compatible with each other, resulting in cloudiness and spoiling the appearance of the molded product. is there.
  • THV resin is excellent in chemical resistance and stain resistance, it is expected to be applied to applications requiring good appearance such as protective films for articles and building materials. Therefore, it is not preferable that the appearance of the molded product is deteriorated due to the influence of the additive.
  • the present invention provides a resin composition that can be melt-molded by a general-purpose molding facility without spoiling the appearance of the molded body, and a molded body using the composition. With the goal.
  • the present inventor can suppress white turbidity and yellowing when the resin composition is molded by dispersing the inorganic acid receiving agent in the THV resin, maintain the transparency of the molded product, and can maintain the transparency of the THV resin. We have found that it captures acid gas generated by thermal decomposition and prevents the diffusion of acid gas, leading to the present invention.
  • the inorganic acid receiving agent (B) is a metal oxide; a metal hydroxide; a solid solution containing a plurality of types of metal oxides; a metal stearate salt; a hydrotalcite represented by the following formula (I).
  • THV resin composition The resin composition of the present embodiment (hereinafter, may be referred to as "THV resin composition”) is a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer (A) (hereinafter, “THV resin (A)”. ) ”) And the inorganic acid-receiving agent (B), and the content of the inorganic acid-receiving agent (B) in the resin composition is the tetra.
  • the amount is 0.01 to 0.1 parts by mass with respect to 100 parts by mass of the fluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer (A).
  • the resin composition of the present embodiment captures the acid gas generated by the decomposition of the THV resin (A) during melt molding by using a specific amount of the inorganic acid receiving agent (B) with respect to the THV resin (A). , The spread can be prevented. Further, unlike organic antioxidants and the like, inorganic antacids are less likely to volatilize even at the processing temperature of THV resin (about 280 ° C. or higher). Therefore, less acid gas is generated during melt molding, and even when a general-purpose molding facility for molding a general thermoplastic resin is used, there is little effect on the members and the like in the facility. In addition, the organic antioxidant may be difficult to get used to when mixed with the THV resin and may cause white turbidity.
  • the inorganic antacid is easily dispersed in the THV resin and has a refractive index relatively close to that of a resin such as THV. Therefore, it is possible to suppress white turbidity and yellowing when the resin composition is molded, and maintain the transparency of the THV resin molded product without impairing its appearance when the THV resin is used as the molded product. Can be done.
  • TFE tetrafluoroethylene
  • HFP Hexafluoropropylene
  • VDF vinylidene fluoride
  • the THV resin (A) is not limited to a copolymer composed of three types of TFE monomer, HFP monomer and VDF monomer. That is, the THV resin (A) may contain other monomers in addition to the TFE monomer, the HFP monomer, and the VDF monomer. Examples of other monomers include (perfluorohexyl) ethylene, (perfluorobutyl) ethylene, (perfluorooctyl) ethylene, [4- (heptafluoroisopropyl) perfluorobutyl] ethylene, and the like, and THV resins (THV resins). A) also includes copolymers and the like using these other monomers as the fourth monomer.
  • the monomer ratio (molar ratio of the constituent units derived from each monomer) in the copolymerization of the TFE monomer, the HFP monomer, and the VDF monomer in the THV resin (A) is not particularly limited, but preferably the ratio of all the monomers is 100.
  • the ratio of TFE monomer is 90 or less, the ratio of HFP monomer is 1 or more, and the ratio of VDF is 9 or more; more preferably, the ratio of TFE is 60 to 90 and the ratio of HFP is 1 to 10.
  • the ratio of VDF is 9 to 30.
  • the ratio of the TFE monomer is 90 or less, the ratio of the HFP monomer and the VDF monomer is relatively increased, so that the softening is easily performed and the melt moldability is improved.
  • the ratio of the TFE monomer is 30 or more, a polytetrafluoroethylene-like structure is formed in a part of the molecular chain, and the chemical resistance, weather resistance, antifouling property, etc. characteristic of the fluororesin are further improved. To do.
  • the melting point of the THV resin (A) is not particularly limited, but is preferably 100 ° C. to 250 ° C., more preferably 150 ° C. to 250 ° C. from the viewpoint of heat resistance.
  • the glass transition temperature of the THV resin (A) is preferably ⁇ 10 ° C. to 30 ° C., more preferably 0 ° C. to 20 ° C. from the viewpoint of flexibility when molded into a film / sheet shape.
  • THV resin (A) As the THV resin (A), a THV resin having an arbitrary TFE / HFP / VDF ratio may be used alone, or a THV resin having two or more different TFE / HFP / VDF ratios may be mixed and used. Good. Further, a resin other than the THV resin (A) may be added as needed, as long as the transparency of the THV resin composition is not impaired. Further, the THV resin (A) which is a copolymer of three kinds of monomers such as TFE / HFP / VDF and the THV resin (A) which is a copolymer of TFE / HFP / VDF / other fourth monomer. May be used in combination with.
  • Examples of resins other than the THV resin (A) include polychlorotrifluoroethylene (PCTFE), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), and fluoride. Examples thereof include vinylidene-hexafluoropropylene copolymer, polytetrafluoroethylene (PTFE), polyhexafluoropropylene (PHFP), polyperfluoroalkyl vinyl ether (PFA), ethylene-chlorotrifluoroethylene copolymer (ECTFE) and the like. .. When other resins are used, the content of the other resin in the THV resin composition is preferably 0.2 parts by mass or less, more preferably 0.1 parts by mass or less, based on 100 parts by mass of the THV resin (A). ..
  • the THV resin composition of the present embodiment contains a specific amount of an inorganic acid antacid with respect to the THV resin (A).
  • the "inorganic acid-receiving agent” means an acid-receiving agent containing an inorganic compound. That is, the inorganic acid-receiving agent (B) is a general term for inorganic compounds capable of capturing an acid by taking in an acid such as an acid gas or neutralizing the acid.
  • the inorganic acid receiving agent (B) is not particularly limited, and any known inorganic compound having an acid receiving action (acid trapping ability) can be appropriately selected.
  • the mechanism of acid capture in the inorganic acid receiving agent (B) is not particularly limited.
  • metal oxides, metal hydroxides, solid solutions containing a plurality of types of metal oxides, metal stearate salts, hydrotalcite compounds represented by the formula (I) described later, and anions Hydrotalcite-like layered compounds that exhibit an exchange action are preferable, and metal oxides, solid solutions containing a plurality of types of metal oxides, hydrotalcite compounds represented by the formula (I) described later, and anion exchange actions. Hydrotalcite-like layered compounds that are expressed are particularly preferred.
  • the resin composition of the present embodiment by adding a specific amount of these inorganic acid receiving agents (B) to the THV resin, corrosion and deterioration of the molding equipment due to the acid gas generated by the decomposition of the THV resin during melt molding are prevented. It is possible to achieve both suppression and maintenance of the appearance of the molded product.
  • the inorganic acid receiving agent (B) one type may be used alone, or two or more types may be used in combination.
  • Examples of the inorganic acid receiving agent (B) are not particularly limited, but examples thereof include inorganic compounds exemplified below.
  • the inorganic acid-receiving agent (B) contains the following inorganic compounds as main components and also contains impurities and the like.
  • Examples of the metal oxide include magnesium oxide and zinc oxide.
  • Examples of the metal hydroxide include magnesium hydroxide and barium hydroxide.
  • Examples of the metal stearate salt include calcium stearate and zinc stearate.
  • Examples of the solid solution composed of a plurality of types of metal oxides include magnesium oxide-aluminum oxide-based solid solutions.
  • hydrotalcite compounds represented by the following formula (I) magnesium ion (Mg 2+ ) and zinc ion (Zn 2+ ) can be mentioned as the divalent metal ion, and aluminum ion (Zn 2+) can be mentioned as the trivalent metal ion. Al 3+ ) and iron ion (Fe 3+ ) can be mentioned.
  • n-valent anion for example, it includes a monovalent or divalent anion, specifically, carbonate ions (CO 3 2-), nitrate ion (NO 3 -) and the like.
  • a hydrotalcite compound a combination of magnesium ion, aluminum ion and carbonate ion is preferable, and examples thereof include hydrotalcite containing magnesium oxide-aluminum oxide as a main component.
  • hydrotalcite-like layered compound exhibiting an anion exchange action examples include a layered compound obtained by firing the hydrotalcite containing magnesium oxide-aluminum oxide as a main component.
  • the refractive index of the inorganic acid receiving agent (B) is preferably 1.9 or less, more preferably 1.6 or less.
  • the refractive index is 1.6 or less, the difference in the refractive index from the THV resin does not become large, and it is possible to effectively prevent the molded product from becoming cloudy.
  • the particle size of the inorganic acid-receiving agent (B) is not particularly limited, but from the viewpoint of maintaining the transparency of the THV resin molded product, the dispersibility of the acid-receiving agent, and the acid trapping performance, the 50% average particle size Is preferably 0.1 ⁇ m to 1 ⁇ m, and more preferably 0.3 ⁇ m to 0.6 ⁇ m.
  • the method of adding the inorganic acid receiving agent (B) to the THV resin composition is not particularly limited, and may be added in advance in the granulation step of the THV resin raw material, or a sheet of the THV resin composition ( In the step of producing the molded product), the unadded THV resin raw material and the inorganic acid receiving agent (B) may be added while being melt-mixed.
  • the content of the inorganic acid receiving agent (B) in the THV resin composition is 0.01 to 0.1 parts by mass with respect to 100 parts by mass of the THV resin (A).
  • the content of the inorganic antacid (B) is 0.1 parts by mass or less, it is possible to prevent the THV resin composition from becoming cloudy due to the antacid and coloring due to thermal deterioration of the antacid.
  • the content of the inorganic acid receiving agent (B) is 0.01% by mass or more, a sufficient acid gas trapping effect can be obtained.
  • the THV resin composition of the present embodiment is a plasticizer, a lubricant, an antistatic agent, an antifogging agent, etc., as long as the transparency, color tone, glossiness, heat resistance, weather resistance, etc. and the effects of the present invention are not impaired in practice.
  • a dropping agent, a hydrophilic agent, a liquid repellent agent and the like can be added. Further, these additives and the like may be added when the THV resin composition is kneaded, or may be applied to the surface after molding the THV resin composition to produce a film or sheet (molded product). Good.
  • pigments can be added as necessary within a range that does not impair heat resistance, weather resistance and the like and the effects of the present invention in practice.
  • the THV resin composition of the present embodiment can be molded into various shapes, for example, in the form of a film or a sheet.
  • a method for producing a film using the THV resin composition of the present embodiment will be described.
  • a known method can be used. For example, a method of molding a resin composition by a melt extrusion method using an extruder and various T dies such as a feed block die or a multi-manifold die. Can be mentioned.
  • the extruder a single-screw screw type, a twin-screw screw type, a tandem type, etc. can be generally used, but a single-screw screw type extruder is preferable in terms of preventing resin from staying in the extruder system. ..
  • the screw shape used in the single-screw type extruder is not particularly limited as long as it does not generate excessive shear heat generation, but a full flight screw is further used for melt extrusion without excessive shearing. preferable.
  • the range of the compression ratio of the screw is preferably 1.8 to 3.0, more preferably 2.1 to 2.7.
  • the compression ratio is 1.8 or more, the THV resin is not sufficiently plasticized, and some of the resin is trapped in the screen mesh as an unmelted substance, which suppresses the increase in resin pressure due to clogging. In addition, it is possible to prevent unmelted substances from being mixed into the sheet as a defect. Further, when the compression ratio is 3.0 or less, it is possible to suppress that the amount of acid gas generated becomes too large due to excessive shear heat generation.
  • the ratio (L / D) of the screw length (L) to the screw (barrel) diameter (D) of the extruder is particularly high as long as the extruder has sufficient L / D for plasticizing the THV resin. It is not limited, but is preferably 20 to 40, more preferably 25 to 35. When the L / D is 20 or more, the resin can be sufficiently plasticized in the screw region, unmelted matter is generated, and as a drawback, it can be suppressed from being mixed into the sheet. Further, when the L / D is 40 or less, excessive shearing is unlikely to be given, and an increase in the amount of acid gas generated can be suppressed.
  • a breaker plate can be provided between the screw tip of the extruder and the T-die.
  • the aperture ratio of the breaker plate is preferably 40 to 60%, more preferably 42 to 58%.
  • the aperture ratio is based on the portion exposed to the resin distribution portion of the extruder, and means the area of the portion where the resin through hole is formed with respect to the total area including the resin through hole.
  • the resin penetration diameter of the breaker plate is preferably 3.7 to 7.0 mm.
  • the resin penetration diameter is preferably 3.7 to 7.0 mm.
  • the screen mesh arranged on the breaker plate is preferably a combination of two or more screen meshes having different openings.
  • a screen mesh having the same opening can be used together.
  • the screen mesh having a large opening and the screen mesh having a small opening in this order from the upstream side (near the screw side) to the downstream side (breaker plate opening side) of the resin distribution section.
  • a coarse screen mesh having a larger opening can be introduced on the downstream side of the screen mesh having the smallest opening.
  • the screen mesh is preferably placed 10 to 100 mm downstream from the tip of the screw.
  • the minimum opening of the screen mesh is preferably 0.03 to 0.2 mm, more preferably 0.03 to 0.15 mm.
  • the screen mesh with a large opening plays a role of removing coarse defects, and the opening is preferably 0.15 to 0.6 mm.
  • the flow path of the T-die used for film production is not particularly limited in its shape as long as the specifications are such that the resin does not easily stay, but an example of a T-die that can be preferably used is a coat hanger die.
  • a form in which the resin is ejected horizontally and a form in which the resin is ejected in the direction perpendicular to the horizontal direction are mainly mentioned, and either form can be preferably used.
  • the temperature setting of the extruder involved in film production varies depending on the type and fluidity of the THV resin, but is preferably 200 to 300 ° C, more preferably 260 to 290 ° C in the downstream portion of the extruder.
  • the temperature is 200 ° C. or higher, the resin can be sufficiently plasticized, and when the temperature is 300 ° C. or lower, it is possible to prevent the amount of acid gas generated from becoming too high due to excessive heating.
  • the film extruded from the T-die in this way immediately contacts the cooling roll close to the die and is taken out while being cooled. Since the THV resin partially crystallizes during cooling, when transparency is required, it is preferable to quench the THV resin with a cooling roll before the crystallization proceeds from the molten state.
  • the distance between the outlet of the T-die and the point where the film comes into contact with the cooling roll is preferably 200 mm or less, more preferably 150 mm or less, and particularly preferably 100 mm or less. When the distance is 200 mm or less, it is possible to prevent the THV resin from being crystallized more than necessary and the transparency of the sheet from being lowered.
  • a roll engraved with a design, a geometric pattern, or the like or an embossed roll can be used.
  • a cooling method using a cooling roll two rolls having a hard surface such as hard chrome plating and diamond-like carbon are provided with a gap suitable for obtaining an arbitrary film thickness, and a film-like molten resin is brought into contact between them.
  • a method of cooling by taking over or a method of crimping the roll on the hard surface with a rubber roll such as silicon and taking over while contacting a film-like molten resin between them can be used.
  • the film taken up as described above passes through a guide roll as appropriate without damaging the film surface, slits to an arbitrary width, and then wound up on a paper tube or the like in a sufficiently cooled state.
  • the film surface may be subjected to surface chemical treatment with corona treatment, plasma treatment, chemicals such as silane coupling agent, or in a separate process. The surface treatment may be carried out.
  • THV resin molded product can be suitably used for applications that require excellent chemical resistance, weather resistance, and designability.
  • the THV resin molded product can be used alone as a film or sheet, or as a laminate with another base material.
  • the state in which the appearance is impaired refers to poor dispersion and cloudiness due to excessive addition of the antacid, and brown coloring due to thermal deterioration of the antacid.
  • the haze value of the film measured in accordance with JIS K7105 increases, but this value can be determined by the manufacturing method, for example, by using an embossed roll to give unevenness to the film surface. May be adjusted. Also, if the haze value is intentionally adjusted, it will not be treated as a poor appearance.
  • the haze value of the film measured in accordance with JIS K7105 by a haze meter is preferably 5% or less. , More preferably 3% or less.
  • the haze value is 5% or less, the visibility of the design or design arranged in the lower layer of the THV resin composition film can be sufficiently obtained.
  • THV resin composition film L * a * b * b of the color system * is measured by a color difference meter is preferably 2.0 or less, further It is preferably 1.0 or less.
  • b * exceeds 2.0 the film itself may be macroscopically recognized as yellow.
  • the effect of reducing the generation of acid gas when a sheet-shaped THV resin molded product is manufactured at a high temperature such as extrusion molding can be confirmed by using an apparatus for measuring the acid gas concentration at an arbitrary place.
  • the measuring device is not particularly limited as long as it has sufficient quantification accuracy.
  • An example of a measuring device that can be used is an acid gas concentration detector in which a glass tube is filled with an acid gas absorber to quantitatively recover the gas and obtain the gas concentration thereof.
  • fluororesin it is preferable to use a gas detector tube for hydrogen fluoride gas.
  • the molded product (for example, film or sheet) obtained by molding the THV resin composition of the present embodiment can be used, for example, for the following purposes.
  • Example 1 After premixing 0.01 part by mass of magnesium oxide (“Kyowamag MF150”) with 100 parts by mass of THV resin raw material (“Dynion THV resin 815GZ”), 280 using “Laboplast Mill Micro” manufactured by Toyo Seiki Seisakusho. The mixture was melt-mixed at ° C. and taken up with a metal cast roll to obtain a gloss-like film having a thickness of 0.05 mm. The amount of acid gas generated during film production and the optical performance of the obtained film were measured and evaluated according to the criteria described later. The results are shown in the table below.
  • Examples 2 to 20 Comparative Examples 1 to 16> Sheets were prepared according to the method of Example 1 except that each raw material and the amount of addition were changed to those shown in Tables 2 to 6 below.
  • the amount of acid gas generated during film production and the optical performance of the obtained film are also shown in Tables 2 to 6 below.
  • the amount of the antacid or the antioxidant added indicates the amount of the antacid or the antioxidant added to 100 parts by mass of the THV resin raw material.
  • the transparency of the resin sheet was determined according to JIS K7105, using a haze meter "NDH7000" manufactured by Nippon Denshoku Kogyo Co., Ltd., and based on the measured haze values, according to the criteria shown in Table 1 below. In the measurement, a sample cut out from an arbitrary 5 points from the resin sheet was used, and the value of the arithmetic mean thereof was adopted.
  • Comparative Examples 1, 5, 8 and 11 From the results of Comparative Examples 1, 5, 8 and 11, it was confirmed that when the amount of the inorganic acid-receiving agent added was small, the appearance of the film was not impaired, but the amount of acid gas generated was insufficiently suppressed. Further, in Comparative Examples 2 to 3, 6 to 7, 9 to 10, 12 to 13, it was found that when the amount of the inorganic acid receiving agent added was excessive, the appearance of the film was impaired. Further, in Comparative Examples 14 to 16, when an antioxidant containing an organic compound was added, it was found that the addition amount was insufficient to suppress the generation of acid gas, the film became turbid, and the optical characteristics were impaired. It was.
  • the THV resin composition of the present invention was able to suppress the acid gas generated during melt molding of the THV resin without spoiling the appearance by the addition of the inorganic acid receiving agent. That is, it is possible to melt-mold the THV resin with a general-purpose molding equipment that is not a corrosion-resistant equipment.

Abstract

L'invention concerne une composition de résine contenant un copolymère de tétrafluoroéthylène-hexafluoropropylène-fluorure de vinylidène (A) et un accepteur d'acide inorganique (B), la quantité contenue de l'accepteur d'acide inorganique (B) dans la composition de résine étant de 0,01 à 0,1 partie en masse par rapport à 100 parties en masse du copolymère de tétrafluoroéthylène-hexafluoropropylène-fluorure de vinylidène (A).
PCT/JP2020/044485 2019-12-11 2020-11-30 Composition de résine et article moulé utilisant ladite composition WO2021117531A1 (fr)

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WO2023085421A1 (fr) * 2021-11-15 2023-05-19 Ａｇｃ株式会社 Composition de résine, objet moulé, composite et son utilisation

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