WO2006100730A1 - Isolant et procede de production de ce dernier - Google Patents

Isolant et procede de production de ce dernier Download PDF

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Publication number
WO2006100730A1
WO2006100730A1 PCT/JP2005/004990 JP2005004990W WO2006100730A1 WO 2006100730 A1 WO2006100730 A1 WO 2006100730A1 JP 2005004990 W JP2005004990 W JP 2005004990W WO 2006100730 A1 WO2006100730 A1 WO 2006100730A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat insulating
insulating material
calcium silicate
composite material
graphite
Prior art date
Application number
PCT/JP2005/004990
Other languages
English (en)
Japanese (ja)
Inventor
Guomin Mi
Original Assignee
Kyosetu Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kyosetu Corporation filed Critical Kyosetu Corporation
Priority to PCT/JP2005/004990 priority Critical patent/WO2006100730A1/fr
Publication of WO2006100730A1 publication Critical patent/WO2006100730A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/06—Arrangements using an air layer or vacuum
    • F16L59/065—Arrangements using an air layer or vacuum using vacuum
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/22—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in calcium oxide, e.g. wollastonite

Definitions

  • the present invention relates to a heat insulating material used as a general heat insulating material or a core material of a vacuum heat insulating material, and a method for producing the same.
  • Ultra-fine silica powder (SiO 2) or flattened inorganic core material for high-performance vacuum insulation that suppresses heat leakage caused by containers and coatings and does not cause deterioration of insulation performance due to increased internal pressure.
  • the present invention has been invented to solve the above problems, and has as its object to provide a heat insulating material that has excellent heat insulating performance and can be manufactured industrially at low cost, and a method for manufacturing the same.
  • Another object of the present invention is to provide a core material for vacuum heat insulating material that has excellent heat insulating performance and can be manufactured industrially at low cost.
  • the present invention has high strength and generates very little gas from the core material and binder.
  • An object is to provide a core material for realizing a high-performance vacuum heat insulating material that does not cause an increase in internal pressure or a deterioration in heat insulating performance.
  • Patent Document 1 Japanese Patent Publication No. 2002-147686
  • the present invention comprises a heat insulating material made of a composite material obtained by mixing calcium silicate hydrate and finely expanded graphite.
  • the heat insulating material used as the core material filled in the outer packaging material of the vacuum heat insulating material is composed of a composite material mixed with calcium silicate hydrate and finely expanded graphite. Further, the present invention is characterized in that the composite material is in a powder form.
  • the present invention is also characterized in that the composite material is molded.
  • the present invention is characterized in that the composite material is fired. Further, the present invention is characterized in that the calcium silicate hydrate is tobermorite.
  • the present invention is also characterized in that the calcium silicate hydrate is zonotlite.
  • the present invention is a method for producing a heat insulating material used as a core material of a general heat insulating material or a vacuum heat insulating material, and synthesizes silica and slaked lime by mechanochemical treatment to generate a hydrated potassium acid hydrate.
  • the present invention is a method for producing a heat insulating material used as a core material of a general heat insulating material or a vacuum heat insulating material, and synthesizes silica and slaked lime by mechanochemical treatment to generate a hydrated potassium acid hydrate.
  • the present invention is characterized in that the key acid hydrate hydrate in the step of producing the calcium silicate hydrate is tobermorite.
  • the present invention is characterized in that the key acid hydrate hydrate in the step of producing the calcium silicate hydrate is zonotolite.
  • FIG. 1 is an explanatory view showing a method for manufacturing a heat insulating material according to the present invention.
  • FIG. 2 is a cross-sectional view of a vacuum heat insulating material useful for one embodiment of the present invention.
  • FIG. 1 shows a method for manufacturing a heat insulating material according to the present invention.
  • silica SiO 2
  • Ca slaked lime
  • step 1 Put into a planetary mill (grinding reactor) with (Mechanochemical) effect and mix and grind in the planetary mill for 0.5-5 hours to produce tobermorite (step 1).
  • Step 2 Next, the produced acid graphite is washed with water to produce finely expanded graphite (step 3). Next, tobermorite and slightly expanded graphite are mixed with a mixer to produce a composite material in which tobermorite and slightly expanded graphite are mixed (step 4). Next, this composite material is molded with 2-5k gfZcm 2 (step 5). Next, the molded composite material is dried at 125 degrees for 1 to 2 hours (step 6).
  • the composite that has been subjected to the drying treatment is baked at 500 to 1200 ° C. to cure the composite. Finish the insulation manufacturing process (Step 7).
  • the measured thermal conductivity of the heat insulating material manufactured in this way is confirmed to have extremely good heat insulating performance. Further, the heat insulating material has been obtained with high strength through molding, drying, and baking treatment.
  • the above heat insulating material can be used as a general heat insulating material, but is optimal as the core material 2 of the vacuum heat insulating material 1 shown in FIG.
  • the vacuum heat insulating material 1 includes the core material 2 as an outer packaging material such as plastic or metal foil laminate film. In addition to the heat insulation performance of the core material 2, it is structured to be more difficult to transfer heat by enclosing in 3 and making the inside a vacuum state.
  • the measured value of the thermal conductivity of the vacuum heat insulating material 1 configured in this way is 0.0OOlOWZmK, and extremely excellent heat insulating performance has been confirmed.
  • Various devices such as a refrigerator and a refrigerator, a notebook type, etc. It can be incorporated into the computer, jar, pot and other required places and used to improve the thermal insulation and thermal insulation function of these devices.
  • zonotlite may be generated in step 1 above, and a composite material with finely expanded graphite may be generated using the zonotlite.
  • the composite material generated in step 4 shown in FIG. 1 is not molded, and the process proceeds to the drying process in step 6 without performing the process in step 5.
  • the dried powdery composite material may be fired to produce a heat insulating material.
  • the drying and firing processes of the present embodiment are the same processes as in the first embodiment.
  • the tobermorite zonotolite constituting the heat insulating material according to the present invention is calcium silicate, and the raw materials thereof are silica such as key sand and slaked lime, so they are abundant and low in cost.
  • calcium silicates such as tobermorite and zonotolite and graphite have a plate-like porous structure, and graphite has an infrared shielding property and absorptivity.
  • the heat insulating material according to the present invention is lightweight and has excellent heat insulating performance, and can be manufactured at normal temperature and normal pressure by mechanochemical synthesis. It is optimal as a heat insulating material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Insulation (AREA)

Abstract

L'invention concerne un isolant que l'on produit en passant par les étapes suivantes: on forme un hydrate de silicate de calcium tel qu'un tobermorite ou un xonotlite par traitement mécanochimique de la silice avec de l'hydroxyde de calcium pour la synthèse, on forme un oxyde de graphite en faisant réagir le graphite avec un acide mélangé, on forme un graphite légèrement expansé en lavant l'oxyde de graphite avec de l'eau, on forme un matériau composite d'hydrate de silicate de calcium et de graphite légèrement expansé en mélangeant l'hydrate de silicate de calcium avec le graphite légèrement expansé produit aux étapes précitées, on fait sécher le matériau composite sous forme de poudre ou après moulage, et on calcine le matériau composite sous forme de poudre ou sous forme moulée. On utilise l'isolant de l'invention comme isolant général ou comme matériau de coeur d'un isolant à vide.
PCT/JP2005/004990 2005-03-18 2005-03-18 Isolant et procede de production de ce dernier WO2006100730A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/004990 WO2006100730A1 (fr) 2005-03-18 2005-03-18 Isolant et procede de production de ce dernier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/004990 WO2006100730A1 (fr) 2005-03-18 2005-03-18 Isolant et procede de production de ce dernier

Publications (1)

Publication Number Publication Date
WO2006100730A1 true WO2006100730A1 (fr) 2006-09-28

Family

ID=37023427

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/004990 WO2006100730A1 (fr) 2005-03-18 2005-03-18 Isolant et procede de production de ce dernier

Country Status (1)

Country Link
WO (1) WO2006100730A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145652A (ja) * 1982-02-24 1983-08-30 三菱化学株式会社 珪酸カルシウム成形体
JPS60112663A (ja) * 1983-11-21 1985-06-19 日本インシュレーション株式会社 珪酸カルシウム系成形体及びその製造方法
JPS6158852A (ja) * 1984-08-27 1986-03-26 北野　辰雄 けい酸カルシウム系成形体
JPH02231135A (ja) * 1989-03-03 1990-09-13 Lignyte Co Ltd 耐火性複合材
JPH07291616A (ja) * 1994-04-26 1995-11-07 Sumitomo Metal Mining Co Ltd 結晶質珪酸カルシウム水和物の製造方法
JPH0932153A (ja) * 1995-07-20 1997-02-04 Ig Tech Res Inc 耐火パネル
JPH10167799A (ja) * 1996-12-05 1998-06-23 Mitsubishi Chem Corp ケイ酸カルシウム成形体およびそれを用いた真空断熱材
JP2002308669A (ja) * 2001-04-04 2002-10-23 Japan Insulation Co Ltd ケイ酸カルシウム・シリカ複合成形体

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58145652A (ja) * 1982-02-24 1983-08-30 三菱化学株式会社 珪酸カルシウム成形体
JPS60112663A (ja) * 1983-11-21 1985-06-19 日本インシュレーション株式会社 珪酸カルシウム系成形体及びその製造方法
JPS6158852A (ja) * 1984-08-27 1986-03-26 北野　辰雄 けい酸カルシウム系成形体
JPH02231135A (ja) * 1989-03-03 1990-09-13 Lignyte Co Ltd 耐火性複合材
JPH07291616A (ja) * 1994-04-26 1995-11-07 Sumitomo Metal Mining Co Ltd 結晶質珪酸カルシウム水和物の製造方法
JPH0932153A (ja) * 1995-07-20 1997-02-04 Ig Tech Res Inc 耐火パネル
JPH10167799A (ja) * 1996-12-05 1998-06-23 Mitsubishi Chem Corp ケイ酸カルシウム成形体およびそれを用いた真空断熱材
JP2002308669A (ja) * 2001-04-04 2002-10-23 Japan Insulation Co Ltd ケイ酸カルシウム・シリカ複合成形体

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