WO2019003319A1 - Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur - Google Patents

Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur Download PDF

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Publication number
WO2019003319A1
WO2019003319A1 PCT/JP2017/023644 JP2017023644W WO2019003319A1 WO 2019003319 A1 WO2019003319 A1 WO 2019003319A1 JP 2017023644 W JP2017023644 W JP 2017023644W WO 2019003319 A1 WO2019003319 A1 WO 2019003319A1
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WIPO (PCT)
Prior art keywords
heat recovery
recovery article
water vapor
base material
material layer
Prior art date
Application number
PCT/JP2017/023644
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English (en)
Japanese (ja)
Inventor
太郎 藤田
西川　信也
遼太 福本
修司 東
晃一郎 狩野
Original Assignee
住友電工ファインポリマー株式会社
住友電気工業株式会社
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Application filed by 住友電工ファインポリマー株式会社, 住友電気工業株式会社 filed Critical 住友電工ファインポリマー株式会社
Priority to PCT/JP2017/023644 priority Critical patent/WO2019003319A1/fr
Priority to PCT/JP2018/012198 priority patent/WO2019003527A1/fr
Publication of WO2019003319A1 publication Critical patent/WO2019003319A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances

Definitions

  • the present invention relates to a heat recovery article and a cover coated with the heat recovery article.
  • Products having low resistance to water vapor such as food, medical equipment, batteries containing lithium ions, displays made of organic EL, liquid crystal, etc. as materials, need to prevent the intrusion of water vapor during storage or use.
  • a barrier label comprising a substance layer having high water vapor barrier properties and an adhesive layer
  • This barrier label is in the form of a sheet, and is affixed to the periphery of a container for containing the above-mentioned product having low resistance to water vapor. And, the barrier label reduces the penetration of water vapor into the container.
  • the heat recovery article according to one aspect of the present invention is a cylindrical heat recovery article provided with a base material layer, and the water vapor transmission rate is 0.1 g when the average thickness of the base material layer after shrinkage is 100 ⁇ m. / M 2 ⁇ day or less.
  • FIG. 1 is a perspective view of a heat recovery article according to an embodiment of the present invention.
  • the barrier label described in the above-mentioned publication adheres a sheet-like label to the periphery of the container, and therefore can not avoid the entry of water vapor from the joint of the end. Further, since the barrier label of the above-mentioned publication is attached by the adhesive layer, water vapor easily infiltrates due to a lack of adhesion or peeling at the curved surface portion of the container. Therefore, it can not be said that the barrier label described in the above publication has a sufficiently high water vapor penetration preventing effect.
  • the present invention has been made based on the circumstances as described above, and provides a heat recovery article which is easy to coat and has a high water vapor penetration preventing effect, and a cover coated with the heat recovery article.
  • the purpose is
  • the heat recovery article according to one aspect of the present invention is easy to coat and has a high water vapor penetration preventing effect. Therefore, the cover coated with the heat recovery article is less susceptible to the penetration of water vapor into the interior.
  • the heat recovery article according to one aspect of the present invention is a cylindrical heat recovery article provided with a base material layer, and the water vapor transmission rate is 0.1 g when the average thickness of the base material layer after shrinkage is 100 ⁇ m. / M 2 ⁇ day or less.
  • the heat recovery article coats the coated object by shrinkage, so that the coating is easy and the heat recovery article adheres to the object to be coated.
  • the heat recovery article is cylindrical and thus has no seam. For this reason, by covering with the said heat recovery article, a crevice does not produce easily between the heat recovery article concerned and a covering subject, and it can control the penetration of water vapor.
  • the water vapor transmission rate when the average thickness of the base material layer after shrinkage is 100 ⁇ m is equal to or less than the above-mentioned upper limit, the water vapor which permeates through the heat recovery article can also be reduced. Therefore, the heat recovery article is easy to coat and has a high water vapor penetration preventing effect.
  • the main component of the base layer is preferably polychlorotrifluoroethylene. Because polychlorotrifluoroethylene has a low water vapor transmission rate, it can further reduce the water vapor that permeates through the heat recovery article.
  • the base layer may be crosslinked. By crosslinking the constituent material of the base layer in this manner, the heat resistance is improved.
  • the crosslinking of the base material layer be crosslinking via a crosslinking aid.
  • a crosslinking aid By using a crosslinking aid, extrusion processability is improved and crosslinking efficiency is enhanced.
  • the heat resistance is further improved and the processability is improved, so the gap between the heat recovery article and the object to be coated Can be more difficult to occur. Therefore, the penetration of water vapor can be further suppressed.
  • the heat recovery article may have a multilayer structure, and at least one layer of the multilayer structure may be constituted by the base layer. With such a configuration, it is possible to impart further different properties to the heat recovery article by the other layers while enhancing the penetration prevention effect of water vapor by the base material layer.
  • the covering according to another aspect of the present invention is covered by the heat recovery article.
  • the covering is covered by the heat recovery article, so that the water vapor is less likely to penetrate inside. Accordingly, the coating is suitably used as a coating for products with low resistance to water vapor, such as food, medical devices, batteries containing lithium ions, and displays using organic EL, liquid crystals, etc. as materials.
  • the "water vapor permeability” is a value measured in accordance with JIS-K7129 (2008). “The water vapor transmission rate when the average thickness of the base material layer after shrinkage is 100 ⁇ m” means the water vapor transmission rate of the base material layer after shrinkage, and then the water vapor transmission rate is the average thickness of the base material layer Refers to proportionally converted value per 100 ⁇ m based on The term “main component” means a component having the highest content, for example, a component having a content of 50% by mass or more, preferably 90% or more.
  • the heat recovery article of FIG. 1 is cylindrical and comprises a substrate layer 1.
  • the base material layer 1 is a cylindrical tube whose diameter is reduced by heating.
  • Examples of the main component of the base material layer 1 include polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), high density polyethylene (HDPE), and the like. Among them, polychlorotrifluoroethylene is preferable from the viewpoint of water vapor permeability. These resins may be used alone or in combination of two or more.
  • PCTFE polychlorotrifluoroethylene
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • HDPE high density polyethylene
  • resins may be used alone or in combination of two or more.
  • the base material layer 1 may be crosslinked.
  • the crosslinking method include methods such as crosslinking by electron beam irradiation, chemical crosslinking, and thermal crosslinking. Among them, electron beam irradiation crosslinking is preferable because the crosslinking time is short and the production efficiency is high.
  • the irradiation dose is preferably 40 kGy or more and 80 kGy or less.
  • the crosslinking of the base layer 1 be crosslinking via a crosslinking aid.
  • a crosslinking aid By using a crosslinking aid, extrusion processability is improved and crosslinking efficiency is enhanced.
  • the heat resistance is further improved and the processability is improved, so the gap between the heat recovery article and the object to be coated Can be more difficult to occur. Therefore, the penetration of water vapor can be further suppressed.
  • crosslinking adjuvant an oxime compound, an acrylate or a methacrylate compound, a vinyl compound, an allyl compound, a maleimide compound etc. are mentioned, for example.
  • a crosslinking adjuvant can be used individually or in combination of 2 or more types.
  • oxime compound examples include p-quinonedioxime, p, p'-dibenzoylquinone dioxime and the like.
  • acrylate or methacrylate compound examples include diethylene glycol diacrylate, diethylene glycol dimethacrylate, polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, acrylic acid / zinc oxide mixture, allyl acrylate, allyl Examples include methacrylate, trimethacrylic isocyanurate and the like.
  • vinyl compound examples include divinylbenzene, divinyltoluene, divinylpyridine and the like.
  • allyl compound examples include hexamethylenediallyl nadiimide, diallyl itaconate, diallyl phthalate, diallyl isophthalate, diallyl monoglycidyl isocyanurate, triallyl cyanurate, triallyl isocyanurate and the like.
  • maleimide compound examples include N, N'-m-phenylenebismaleimide, N, N '-(4,4'-methylenediphenylene) dimaleimide and the like.
  • triallyl isocyanurate (TAIC) of allyl compound diallyl monoglycidyl isocyanurate (DA-MGIC) of allyl compound
  • TMPTA trimethylolpropane triacrylate
  • the average inner diameter and the average thickness of the base material layer 1 are appropriately selected in accordance with the application and the like.
  • the average inner diameter of the base material layer 1 before thermal contraction can be, for example, 1 mm or more and 60 mm or less.
  • an average internal diameter after the heat contraction of the base material layer 1 it can be 30% or more and 50% or less of the average internal diameter before heat contraction, for example.
  • contraction of the base material layer 1 it can be set as 0.1 mm or more and 5 mm or less, for example.
  • the average thickness of the base material layer 1 after contraction changes in accordance with the contraction rate.
  • the upper limit of the water vapor permeability when the average thickness of the base material layer 1 after shrinkage is 100 ⁇ m is 0.1 g / m 2 ⁇ day, more preferably 0.08 g / m 2 ⁇ day, 0. 04 g / m 2 ⁇ day is more preferable, and 0.01 g / m 2 ⁇ day is particularly preferable. If the water vapor transmission rate exceeds the above upper limit, the effect of the heat recovery article against invading water vapor may be insufficient.
  • the lower limit of the water vapor permeability is not particularly limited and is preferably as low as possible, but it is usually about 0.003 g / m 2 ⁇ day.
  • the heat shrinkable temperature of the base material layer 1 is less than the above lower limit, the heat recovery article may be softened when used under a high temperature environment, and a gap may be generated to facilitate the penetration of water vapor.
  • the thermal contraction temperature of the substrate layer 1 exceeds the upper limit, there is a possibility that the object to be coated may be damaged by high heat when the thermal recovery article is thermally shrunk, and the thermal energy for heating is unnecessarily large. And the cost of the coating may increase.
  • the 2% secant modulus of substrate layer 1 As a maximum of 2% secant modulus of substrate layer 1, 1000MPa is preferred, 800MPa is more preferred, and 500MPa is still more preferred.
  • the 2% secant modulus exceeds the above upper limit, the flexibility of the heat recovery article is insufficient, and a gap with the object to be coated is easily formed when the object to be coated is covered, and thus the penetration prevention effect of water vapor May be insufficient.
  • the lower limit of the 2% secant modulus of the base material layer 1 is not particularly limited, but is usually about 100 MPa.
  • the 2% secant modulus is a value measured based on ASTM-D5223-92.
  • a filler may be added to the base material layer 1 for the purpose of enhancing the water vapor barrier property.
  • you may add a flame retardant for the purpose of improving a flame retardance.
  • other additives may be added to the base layer 1 as required. Examples of such additives include antioxidants, copper inhibitors, lubricants, colorants, heat stabilizers, ultraviolet light absorbers and the like.
  • filler As the filler, talc, silica, mica, clay, carbon, alumina, magnesium carbonate, calcium carbonate, zinc carbonate, zinc oxide, zinc oxide, zinc borate, aluminum hydroxide, magnesium hydroxide, magnesium oxide, calcium hydroxide, titanium oxide, Montmorillonite, cellulose nanofibers and the like can be mentioned.
  • a filler in base material layer 1 As a minimum of content of a filler in base material layer 1, 0.1 mass part is preferred to 100 mass parts of resin components, and 1 mass part is more preferred. On the other hand, as an upper limit of content of the said filler, 100 mass parts is preferable with respect to 100 mass parts of resin components, and 80 mass parts is more preferable. If the content of the filler is less than the above lower limit, the effect of providing the water vapor barrier property may be insufficient. Moreover, when content of the said filler exceeds the said upper limit, there exists a possibility that the toughness and elongation of the said heat recovery articles
  • chlorinated flame retardants such as chlorinated paraffin, chlorinated polyethylene, chlorinated polyphenyl and perchloropentacyclodecane, 1,2-bis (2,3,4,5,6-pentabromophenyl) Ethane, ethylenebispentabromobenzene, ethylenebispentabromodiphenyl, tetrabromoethane, tetrabromobisphenol A, hexabromobenzene, decabromobiphenyl ether, tetrabromophthalic anhydride, polydibromophenylene oxide, hexabromocyclodecane, ammonium bromide And other brominated flame retardants, triallyl phosphate, alkylallyl phosphate, alkyl phosphate, dimethyl phosphonate, phosphorylate, halogenated phosphorylate ester, trimethyl phosphate, tributyl phosphate
  • phosphorus compounds phosphonate type polyols, phosphate type polyols, polyols such as halogen element, melamine cyanurate, triazine, isocyanurate, nitrogen compounds such as urea and guanidine, silicone polymers, ferrocene, fumaric acid, maleic acid etc.
  • halogen-based flame retardants such as bromine-based flame retardants and chlorine-based flame retardants are preferable.
  • the bromine-based flame retardant and the chlorine-based flame retardant may be used alone or in combination of two or more.
  • a flame retardant in base material layer 1 As a minimum of content of a flame retardant in base material layer 1, 1 mass part is preferred to 100 mass parts of resin components, and 5 mass parts is more preferred.
  • an upper limit of content of a flame retardant 100 mass parts is preferred to 100 mass parts of resin components, and 80 mass parts is more preferred. If the content of the flame retardant is less than the above lower limit, the effect of imparting flame retardancy may not be obtained. Moreover, when content of the said flame retardant exceeds the said upper limit, there exists a possibility that the toughness and elongation of the said heat recovery articles
  • antioxidant examples include phenol compounds, amine compounds, hindered amine compounds, hindered phenol compounds, salicylic acid derivatives, benzophenone compounds, benzotriazole compounds and the like, and particularly hindered amine compounds excellent in the crosslinking inhibitory effect.
  • the compounds are preferably used.
  • sulfur compounds and phosphite ester compounds can be used alone or in combination.
  • amine compounds used as an antioxidant include 4,4 ′-( ⁇ , ⁇ -dimethylbenzyl) diphenylamine, polymers of 2,2,4-trimethyl-1,2-dihydroquinoline, 6-ethoxy-2, 2,4-trimethyl-1,2-dihydroquinoline, N- (1,3-dimethylbutyl) -N'-phenyl-1,4-phenylenediamine, N-isopropyl-N'-phenyl-1,4-phenylene Diamine etc. can be mentioned.
  • the lower limit of the content of the antioxidant in the base material layer 1 is preferably 1 part by mass, and more preferably 1.5 parts by mass with respect to 100 parts by mass of the resin component.
  • an upper limit of content of the said antioxidant 30 mass parts is preferable with respect to 100 mass parts of resin components, and 20 mass parts is more preferable. If the content of the antioxidant is less than the above lower limit, the base material layer 1 is easily oxidized, and the heat recovery article may be deteriorated. Conversely, if the content of the antioxidant exceeds the above upper limit, bloom and bleed may occur.
  • the heat recovery article can be manufactured, for example, by a manufacturing method including an extrusion molding step and a diameter expansion step. Each process will be described below.
  • the base material layer-forming material for forming the base material layer 1 is extrusion molded using a melt extruder to form an extrusion molded article.
  • the base material layer-forming material can be prepared, for example, by adding a crosslinking aid, a flame retardant and various additives to the resin as the main component of the base layer 1, and mixing them using, for example, a melt mixer.
  • a melt mixer known ones such as an open roll, a Banbury mixer, a pressure kneader, a single-shaft mixer, a multi-shaft mixer and the like can be used.
  • An extrusion-molded article is formed by extruding the base material layer-forming material using a known melt extruder. Specifically, extrusion is performed using an extrusion die having a cylindrical space for extruding a layer corresponding to the base material layer 1. This gives an extruded product. In the extrusion molding step, the heat resistance may be improved by crosslinking the constituent material of the base material layer forming material.
  • the dimensions of the extrusion can be designed according to the application and the like.
  • the average inner diameter of the extrusion-molded product is, for example, 0.4 mm or more and 30 mm or less, and the maximum thickness is 0.4 mm or more and 10 mm or less.
  • the die temperature in the extrusion molding step is not particularly limited, but can be, for example, a temperature higher by 10 ° C. or more and 100 ° C. or less than the melting point of the resin material forming the base material layer 1.
  • the lower limit of the extrusion linear velocity in the extrusion molding step is preferably 5 m / min, and more preferably 8 m / min. If the extrusion linear velocity is less than the lower limit, the productivity of the heat recovery article may be insufficient.
  • the upper limit of the extrusion linear velocity is not particularly limited, but is usually about 15 m / min.
  • the expanded diameter of the extrusion-molded product is expanded to a predetermined inner diameter by a method such as introducing compressed air inside while the extrusion-molded product is heated to the glass transition temperature or more, and then cooled to fix the shape. It is done by Such diameter expansion of the extrusion-molded product is performed, for example, such that the inner diameter of the extrusion-molded product is 2 or more and 4 or less.
  • the heat recovery article is obtained by expanding and fixing the shape of the extrusion-molded product.
  • the covering is configured by covering the object to be covered with the heat recovery article.
  • the object to be covered with the cover is not particularly limited, and examples thereof include food, medical devices, batteries including lithium ion and the like, and displays using organic EL and liquid crystal as materials.
  • medical devices and batteries are preferable, and those used for wearable applications are particularly preferable. Since these are particularly in an environment susceptible to water vapor and have low resistance to water vapor, the coating of the heat recovery article is highly effective in preventing the intrusion of water vapor.
  • the said coating can be manufactured, for example by the manufacturing method provided with a covering object insertion process, a heat recovery article heating process, and a cooling process.
  • the heat recovery article is covered so as to cover the covering object. Specifically, the object to be coated is inserted from the end of the heat recovery article having a cylindrical shape.
  • the heat recovery article heating step the heat recovery article is heated and thermally shrunk.
  • the heating method examples include a method of heating the heat recovery article with a heat gun or the like.
  • the heating temperature is determined by the heat shrinkage temperature of the heat recovery article, and is, for example, 100 ° C. or more and 200 ° C. or less.
  • the heating time may be any time as long as the heat recovery article contracts sufficiently, and can be, for example, 10 seconds to 15 minutes.
  • the coated object may be sealed inside the heat recovery article by heat shrinking both ends of the heat recovery article and closing the both ends.
  • the heat recovery article after heat contraction is cooled.
  • the cooling method is not particularly limited. For example, cooling by natural standing or forced cooling by cold air can be used. This cooling can fix the shape of the heat recovery article.
  • the heat recovery article coats the coated object by shrinkage, so that the coating is easy and the heat recovery article adheres to the object to be coated.
  • the heat recovery article is cylindrical and thus has no seam. For this reason, by covering with the said heat recovery article, a crevice does not produce easily between the heat recovery article concerned and a covering subject, and it can control the penetration of water vapor.
  • the water vapor transmission rate is 0.1 g / m 2 ⁇ day or less when the average thickness of the base material layer 1 after shrinkage is 100 ⁇ m, the heat recovery article penetrates the heat recovery article. Invasive water vapor can also be reduced. Therefore, the heat recovery article is easy to coat and has a high water vapor penetration preventing effect.
  • the covering is covered by the heat recovery article, so that the water vapor is less likely to penetrate inside. Accordingly, the coating is suitably used as a coating for products with low resistance to water vapor, such as food, medical devices, batteries containing lithium ions, and displays using organic EL, liquid crystals, etc. as materials.
  • the heat recovery article of the present invention may comprise an adhesive layer laminated on the inner circumferential surface of the base layer.
  • This adhesive layer is for enhancing the adhesion between the adhered portion of the object to be coated and the substrate layer, and for improving the effect of suppressing the penetration of water vapor.
  • polyolefin, polyamide etc. can be used, for example.
  • the polyamide may be crosslinked by electron beam irradiation or the like.
  • the adhesive layer may contain additives such as a viscosity characteristic improver, a deterioration inhibitor, a flame retardant, a lubricant, a colorant, a heat stabilizer, an ultraviolet absorber, and an adhesive.
  • the average thickness and the average length of the adhesive layer are determined so that the amount of adhesive capable of filling the inside of the base material layer after shrinkage can be secured, and the object to be covered can be stored inside the heat recovery article. Be done.
  • the average thickness of the adhesive layer can be 5% or more and 90% or less of the average thickness of the base material layer.
  • the average length of the adhesive layer can be equivalent to the average length of the base layer.
  • the heat recovery article comprising the base layer and the adhesive layer can be formed, for example, by extruding the base layer and the adhesive layer separately.
  • the adhesive layer is disposed on the inner peripheral surface of the base layer expanded after extrusion molding, and this is adhered to the adherend, and then the base layer is shrunk. used.
  • PCTFE Neoflon PCTFE M-300P manufactured by Daikin Industries, Ltd.
  • Material B As material B, 100 parts by weight of PCTFE was heated and melted by a roll mixer at a set temperature of 220 ° C., and 5 parts by weight of TAIC (manufactured by Nippon Kasei Co., Ltd.) was kneaded as a crosslinking aid and pelletized.
  • the material A was used as a base material layer forming material, and an extrusion-formed product was formed by extrusion.
  • a die for extrusion having a diameter of 8 mm and a diameter of 7.5 mm was used.
  • molding die was 6 mm, and the internal diameter was 4 mm.
  • extrusion molding was performed at a die temperature of 220 ° C. and a linear velocity of 10 m / min using an extrusion molding machine with a cylinder diameter of 50 mm ⁇ . After extrusion, an electron beam was irradiated at an irradiation dose of 60 kGy for crosslinking.
  • the resulting extrusion-molded product was sealed using heat and expansion machines, while applying internal pressure while heating and sealing the both ends, and then air-cooling and fixing its shape.
  • the diameter expansion temperature was 120 ° C., and the diameter was increased until the inner diameter reached 12 mm, and the average thickness was 100 ⁇ m. Thus, No. 1 heat recovery article was obtained.
  • No. 6 was produced except that no electron beam irradiation was performed and no crosslinking was performed. In the same manner as No. 1, No. Two heat recovery articles were produced.
  • No. 1 was used except that the material B was used as a base material layer forming material. In the same manner as No. 1, No. Three heat recovery articles were produced.
  • No. 6 was produced except that no electron beam irradiation was performed and no crosslinking was performed. In the same manner as No. 3, no. Four heat recovery articles were produced.
  • the material A is used as a material for forming a base layer, No. 2 having a base layer in the outer layer and an adhesive layer in the inner layer by two-layer extrusion molding. Five heat recovery articles were produced.
  • a die for extrusion having a diameter of 8 mm and a diameter of 7.5 mm was used.
  • molding die was 6 mm, and the internal diameter was 5.8 mm.
  • extrusion molding was performed at a die temperature of 220 ° C. and a linear velocity of 10 m / min using an extrusion molding machine with a cylinder diameter of 50 mm ⁇ . Except for the above, no. In the same manner as No. 1, No. Five heat recovery articles were produced.
  • No. 4 was used except that the material C was used as a base material layer forming material. In the same manner as No. 1, No. Six heat recovery articles were produced.
  • the No. 1 water vapor transmission rate is 0.1 g / m 2 ⁇ day or less. 1 to No.
  • the coating using the heat recovery article of No. 6 can not sufficiently suppress permeation and infiltration of water vapor.
  • the electron beam irradiated crosslinked No. 2 and No. No. 4 heat recovery articles are as described in No. 1 and No. 1
  • the water vapor transmission rate is low for the heat recovery article of 3. From this, it is understood that the water vapor permeability of the heat recovery article can be improved by electron beam crosslinking the constituent material of the base material layer.
  • the No. 1 water vapor transmission rate was 0.1 g / m 2 ⁇ day or less. 1 to No. It can be seen that, in the case of a coating coated with the heat recovery article of No. 5, it is difficult for water vapor to penetrate into the object to be coated.

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Abstract

L'article de récupération de chaleur, selon un mode de réalisation de la présente invention, est un article cylindrique de récupération de chaleur équipé d'une couche de substrat, la perméabilité à la vapeur d'eau étant inférieure ou égale à 0,1 g/m2∙jour lorsque l'épaisseur moyenne de la couche de substrat après retrait est de 100 µm.
PCT/JP2017/023644 2017-06-27 2017-06-27 Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur WO2019003319A1 (fr)

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PCT/JP2017/023644 WO2019003319A1 (fr) 2017-06-27 2017-06-27 Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur
PCT/JP2018/012198 WO2019003527A1 (fr) 2017-06-27 2018-03-26 Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur

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PCT/JP2017/023644 WO2019003319A1 (fr) 2017-06-27 2017-06-27 Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur

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PCT/JP2018/012198 WO2019003527A1 (fr) 2017-06-27 2018-03-26 Article de récupération de chaleur et corps recouvert, recouvert par ledit article de récupération de chaleur

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Citations (7)

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US4544721A (en) * 1983-10-06 1985-10-01 E. I. Du Pont De Nemours And Company Chlorotriflouroethylene polymer oriented films
JPS60178454A (ja) * 1984-02-25 1985-09-12 Canon Inc 像保持部材
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