JP2001301085A - Composite heat insulating building material - Google Patents
Composite heat insulating building materialInfo
- Publication number
- JP2001301085A JP2001301085A JP2000163692A JP2000163692A JP2001301085A JP 2001301085 A JP2001301085 A JP 2001301085A JP 2000163692 A JP2000163692 A JP 2000163692A JP 2000163692 A JP2000163692 A JP 2000163692A JP 2001301085 A JP2001301085 A JP 2001301085A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- calcium silicate
- building material
- composite heat
- molded body
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/4838—Halogenated polymers
- C04B41/4842—Fluorine-containing polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、酸を扱う工場等、
酸性雰囲気の場所に使用する断熱建材に関するものであ
る。[0001] The present invention relates to an acid plant,
The present invention relates to a heat insulating building material used in a place having an acidic atmosphere.
【０００２】[0002]
【従来の技術】断熱材には無機系のものと有機系のもの
とがあるが、無機系断熱材は不燃性に優れているので、
工場等を用途とする建材分野においては無機系の断熱材
が多く使用されている。建材分野において使用される無
機系の断熱材としては、ロックウールやグラスウール等
の無機繊維から成る柔軟性を有する断熱材と、けい酸カ
ルシウム成形体のような柔軟性を有しない断熱材とがあ
るが、ともに酸性雰囲気中で使用すると劣化するという
問題点がある。係る問題点を解決する手段として、前記
の無機系断熱材を、耐酸性を有する材料で被覆するとい
う方法が考えられるが、このような材料で単に被覆した
だけでは、酸性雰囲気中において使用した場合に、断熱
建材として必要とされる性能を長期間にわたり保持でき
るとはいえない。例えば、特開昭６３−２８６３３５号
公報には、ゾノトライト、補強繊維及び有機高分子系ポ
リマーを含むけい酸カルシウム系人造木材であって、表
面にフッ素樹脂の塗膜を有する人造木材が開示されてい
る。しかし、この技術はポリマーを含むけい酸カルシウ
ム材に関するものであり、かつ、形成された塗膜にはピ
ンホールを生じることがあるので、酸性雰囲気中で使用
した場合、けい酸カルシウム材が劣化してしまう危険が
ある。また、塩化ビニル等建材分野で一般に使用されて
いる樹脂シートは耐熱性が低いので、前記用途に使用す
る複合断熱建材の被覆層用材料としては望ましくない。2. Description of the Related Art Insulation materials are classified into inorganic materials and organic materials. Inorganic materials have excellent nonflammability.
In the field of building materials for use in factories and the like, inorganic heat insulating materials are often used. Examples of the inorganic heat insulating materials used in the building materials field include a heat insulating material having flexibility made of inorganic fibers such as rock wool and glass wool, and a heat insulating material having no flexibility such as a calcium silicate compact. However, there is a problem that when both are used in an acidic atmosphere, they deteriorate. As a means for solving such a problem, a method of coating the inorganic heat insulating material with a material having acid resistance is conceivable.However, simply coating with such a material, when used in an acidic atmosphere In addition, it cannot be said that the performance required as a heat insulating building material can be maintained for a long period of time. For example, JP-A-63-286335 discloses a calcium silicate artificial wood containing zonotolite, reinforcing fibers and an organic high molecular polymer, which has a fluororesin coating on the surface. I have. However, this technique relates to a calcium silicate material containing a polymer, and a pinhole may be formed in a formed coating film, so that when used in an acidic atmosphere, the calcium silicate material deteriorates. There is a danger of In addition, resin sheets generally used in the field of building materials such as vinyl chloride have low heat resistance, and therefore are not desirable as a material for a coating layer of a composite heat insulating building material used in the above-mentioned applications.
【０００３】[0003]
【発明が解決しようとする課題】すなわち本発明の課題
は、酸性雰囲気中に施工して長期使用することが可能
な、無機系断熱材を被覆材で被覆してなる複合断熱建材
を提供することにある。本発明者は、酸性雰囲気中にお
いて長期間にわたる使用を可能にするための、無機系断
熱材と被覆材との組み合わせについて研究した結果、け
い酸カルシウム成形体を芯材とし、その全面にわたって
フッ素樹脂シートによる被覆層を設け、けい酸カルシウ
ム成形体を完全に密封することにより、係る課題を解決
できることを見出し本発明を完成した。That is, an object of the present invention is to provide a composite heat insulating building material comprising an inorganic heat insulating material coated with a coating material, which can be used in an acidic atmosphere for a long period of time. It is in. The present inventor has studied a combination of an inorganic heat insulating material and a coating material for enabling long-term use in an acidic atmosphere. The present inventors have found that such a problem can be solved by providing a covering layer with a sheet and completely sealing the calcium silicate molded body, and completed the present invention.
【０００４】[0004]
【課題を解決するための手段】本発明による複合断熱建
材は、けい酸カルシウム成形体の全面に、フッ素樹脂シ
ートからなる被覆層を設け、前記けい酸カルシウム成形
体を密封してなる構成であり、けい酸カルシウム成形体
のかさ比重が０．１以上０．６以下である構成、および
フッ素樹脂シートからなる被覆層の厚さが５０μｍ以上
５００μｍ以下である構成を含む。The composite heat insulating building material according to the present invention has a structure in which a coating layer made of a fluororesin sheet is provided on the entire surface of a calcium silicate molded body, and the calcium silicate molded body is sealed. And a configuration in which the bulk specific gravity of the calcium silicate molded body is 0.1 to 0.6, and a configuration in which the thickness of the coating layer formed of the fluororesin sheet is 50 to 500 μm.
【０００５】[0005]
【発明の実施の形態】本発明に用いる無機系の断熱材と
しては、けい酸カルシウム成形体が好適に用いられ、か
さ比重が０．１以上０．６以下のけい酸カルシウム成形
体が特に好適に用いられる。けい酸カルシウム成形体の
かさ比重が０．１未満であると、断熱建材として必要と
される強度を得にくいことから望ましくない。また、け
い酸カルシウム成形体のかさ比重が０．６を上回ると、
断熱性能が必ずしも十分ではなくなる。更に、ロックウ
ールやグラスウール等の無機繊維から成る無機系断熱材
は、被覆材で密封して複合断熱材としたときの断熱性能
のバラツキが大きくなることから、本発明に使用する無
機系断熱材としては望ましくない。なお、本発明におけ
るけい酸カルシウム成形体とは、石灰質原料とけい酸質
原料とをオートクレーブ中で反応させて生成したけい酸
カルシウム水和物をマトリックスとする成形体であり、
必要に応じて補強繊維や骨材等が原料として使用され
る。本発明に使用されるけい酸カルシウム成形体用の補
強繊維は、マトリックスに対する補強性能を有していれ
ば特に限定されるものではないが、セルロースパルプや
耐アルカリガラス繊維等を例示することができる。けい
酸カルシウム成形体の形状は特に限定されるものではな
く、板状や管状等、使用する部位の形状に適した形状の
ものを使用することができる。BEST MODE FOR CARRYING OUT THE INVENTION As the inorganic heat insulating material used in the present invention, a calcium silicate molded body is preferably used, and a calcium silicate molded body having a bulk specific gravity of 0.1 to 0.6 is particularly preferred. Used for If the bulk specific gravity of the calcium silicate molded product is less than 0.1, it is not desirable because it is difficult to obtain the strength required as a heat insulating building material. Also, when the bulk specific gravity of the calcium silicate molded body exceeds 0.6,
The insulation performance is not always sufficient. Furthermore, the inorganic heat insulating material made of inorganic fibers such as rock wool and glass wool has a large variation in heat insulating performance when sealed with a covering material to form a composite heat insulating material. As undesirable. The calcium silicate compact in the present invention is a compact having calcium silicate hydrate formed by reacting a calcareous raw material and a siliceous raw material in an autoclave as a matrix,
If necessary, reinforcing fibers and aggregates are used as raw materials. The reinforcing fiber for the calcium silicate molded body used in the present invention is not particularly limited as long as it has reinforcing performance for the matrix, and examples thereof include cellulose pulp and alkali-resistant glass fiber. . The shape of the calcium silicate formed body is not particularly limited, and a shape suitable for the shape of a portion to be used, such as a plate or a tube, can be used.
【０００６】本発明に用いる被覆層形成材料は、フッ素
樹脂シートが好適である。フッ素樹脂塗料を塗布して被
覆層を形成した場合には、被覆層にピンホールを生じ、
このピンホールを通して酸が複合断熱建材の内部に進入
し、けい酸カルシウム成形体を劣化させるので望ましく
ない。また、フッ素樹脂にはいろいろな種類があり、い
ずれも本発明に使用することができるが、４フッ化エチ
レン樹脂（ＰＴＦＥ）が特に好適である。The coating layer forming material used in the present invention is preferably a fluororesin sheet. When a coating layer is formed by applying a fluororesin paint, a pinhole is generated in the coating layer,
Undesirably, the acid penetrates into the inside of the composite heat insulating building material through the pinhole and deteriorates the calcium silicate molded body. There are various types of fluororesins, and any of them can be used in the present invention, but tetrafluoroethylene resin (PTFE) is particularly preferable.
【０００７】本発明において、被覆層は、フッ素樹脂シ
ートを単層で被覆することにより形成しても良く、ある
いはフッ素樹脂シートを積層して被覆することにより形
成しても良い。In the present invention, the coating layer may be formed by coating the fluororesin sheet with a single layer, or may be formed by laminating and coating a fluororesin sheet.
【０００８】本発明において、被覆層の厚さは、５０μ
ｍ以上５００μｍ以下が望ましい。被覆層の厚さが５０
μｍ未満であると、酸性雰囲気中において使用した場
合、十分な耐久性を得ることができないことがあり、好
ましくない。また、被覆層の厚さを５００μｍよりも厚
くしても、コストが上昇するだけであって性能の向上は
認められないことから、好ましくない。更に、フッ素樹
脂シート１枚当たりの厚さが５００μｍを上回るものに
ついては、けい酸カルシウム成形体を被覆して密封する
ための加工を行いにくいという問題もある。In the present invention, the thickness of the coating layer is 50 μm.
m or more and 500 μm or less. Coating layer thickness is 50
If it is less than μm, sufficient durability may not be obtained when used in an acidic atmosphere, which is not preferable. Further, if the thickness of the coating layer is larger than 500 μm, it is not preferable because only the cost is increased and the performance is not improved. Further, when the thickness per one fluororesin sheet exceeds 500 μm, there is a problem that it is difficult to perform processing for covering and sealing the calcium silicate molded body.
【０００９】本発明において、フッ素樹脂シートを被覆
することによりけい酸カルシウム成形体を密封するため
の方法は、けい酸カルシウム成形体を完全に外気と遮断
することができるものであるならば、特に限定されるも
のではない。In the present invention, a method for sealing a calcium silicate molded article by coating a fluororesin sheet is particularly provided that the calcium silicate molded article can be completely shielded from the outside air. It is not limited.
【００１０】[0010]
【実施例】（実施例）けい酸カルシウム成形体として、
かさ比重０．３、幅９１０ｍｍ、長さ１２１０ｍｍ、厚
さ４０ｍｍの板（株式会社アスク製ケイカライトＬ）を
使用した。また、被覆材として、厚さ１００μｍのＰＴ
ＦＥシート（株式会社アスク製アスクフロロ）を使用し
た。この被覆材１層にて前記けい酸カルシウム成形体を
完全に覆うとともに、被覆材の接合部には被覆材同士の
重ね合わせ部を設け、この重ね合わせ部において被覆材
同士が当接する面それぞれに対して、予め、液体アンモ
ニア−金属ナトリウム（１質量％）溶液を使用した化学
的エッチング法で約３０秒間表面処理を行っておき、こ
の表面処理が施された面同士をエポキシ樹脂系接着剤を
用いて接合することにより、けい酸カルシウム成形体を
完全に密封して、本発明になる複合断熱建材を得た。こ
の複合断熱建材を、塩酸を使用する工場の天井に取り付
け、１ヶ月間暴露した後取り外し、けい酸カルシウム成
形体の曲げ強度を測定した。その結果、暴露開始前の曲
げ強度が０．４５Ｎ／ｍｍ２であったのに対し、１ヶ月
暴露後の曲げ強度も０．４５Ｎ／ｍｍ２であり、断熱建
材としての主たる物性を担っているけい酸カルシウム成
形体には、劣化を生じていなかった。また、外観観察に
おいても、けい酸カルシウム成形体に変化は認められな
かった。EXAMPLES (Example) As a calcium silicate molded body,
A plate having a specific gravity of 0.3, a width of 910 mm, a length of 1210 mm, and a thickness of 40 mm (Keikalite L manufactured by Ask Co., Ltd.) was used. As a coating material, a 100 μm-thick PT
An FE sheet (Ask Fluoro manufactured by Ask, Inc.) was used. One layer of the covering material completely covers the calcium silicate molded body, and at the joint of the covering materials, an overlapping portion of the covering materials is provided. On the other hand, surface treatment is performed in advance by a chemical etching method using a liquid ammonia-metal sodium (1% by mass) solution for about 30 seconds, and the surfaces subjected to the surface treatment are coated with an epoxy resin adhesive. Thus, the composite calcium silicate compact was completely sealed to obtain a composite heat insulating building material according to the present invention. The composite heat-insulating building material was attached to the ceiling of a factory using hydrochloric acid, exposed for one month, removed, and the bending strength of the calcium silicate molded body was measured. As a result, the flexural strength before the start of exposure was 0.45 N / mm 2 , while the flexural strength after one month of exposure was 0.45 N / mm 2, which is the main physical property as a heat insulating building material. The calcium silicate molded body did not deteriorate. In addition, no change was observed in the appearance of the calcium silicate molded article in the appearance observation.
【００１１】（比較例）けい酸カルシウム成形体は、実
施例と同一のものを使用した。このけい酸カルシウム成
形体の全面に対して、まずシーラー処理及び目止め処理
を行い、次いでフッ素樹脂塗料（日本ペイント（株）
製）をスプレー塗装して塗膜を形成し、厚さ１００μｍ
の被覆層を形成して、複合断熱建材を得た。この複合断
熱建材を、実施例と同一条件により、塩酸を使用する工
場の天井に取り付け、１ヶ月間暴露した後取り外し、け
い酸カルシウム成形体の曲げ強度を測定した。その結
果、暴露開始前の曲げ強度が０．４５Ｎ／ｍｍ２であっ
たのに対し、１ヶ月暴露後の曲げ強度は０．３４Ｎ／ｍ
ｍ２であり、明らかな強度低下が認められた。また外観
観察においても、当初白色であったけい酸カルシウム成
形体の表面が黄色に変色していることが認められた。更
に、塗膜について顕微鏡観察を行ったところ、ピンホー
ルが認められた。(Comparative Example) The same calcium silicate compact as that of the embodiment was used. The entire surface of the calcium silicate molded body is first subjected to a sealer treatment and a sealing treatment, and then to a fluororesin paint (Nippon Paint Co., Ltd.)
) Is spray-coated to form a coating film and has a thickness of 100 μm
Was formed to obtain a composite heat insulating building material. The composite heat-insulating building material was attached to the ceiling of a factory using hydrochloric acid under the same conditions as in the example, and after being exposed for one month, removed, and the bending strength of the calcium silicate molded body was measured. As a result, the bending strength before the start of exposure was 0.45 N / mm 2 , whereas the bending strength after one month of exposure was 0.34 N / m 2.
m 2, and apparent reduction in strength was observed. In addition, observation of the appearance also confirmed that the surface of the calcium silicate molded body which was initially white had changed to yellow. Further, when the coating film was observed under a microscope, pinholes were observed.
【００１２】[0012]
【発明の効果】本発明になる複合断熱材は、酸性雰囲気
中で使用しても劣化を生ぜず、優れた耐久性を有する。The composite heat insulating material according to the present invention does not deteriorate even when used in an acidic atmosphere, and has excellent durability.
【図１】本発明になる複合断熱建材の断面図である。FIG. 1 is a sectional view of a composite heat insulating building material according to the present invention.
１ 被覆材 ２ けい酸カルシウム成形体 DESCRIPTION OF SYMBOLS 1 Coating material 2 Calcium silicate molded object
Claims (3)
素樹脂シートからなる被覆層を設け、前記けい酸カルシ
ウム成形体を密封してなることを特徴とする複合断熱建
材。1. A composite heat-insulating building material comprising: a covering layer made of a fluororesin sheet provided on the entire surface of a calcium silicate molded body; and sealing the calcium silicate molded body.
０．１以上０．６以下であることを特徴とする請求項１
記載の複合断熱建材。2. The calcium silicate molded body has a bulk specific gravity of:
2. The structure according to claim 1, wherein the ratio is not less than 0.1 and not more than 0.6.
The composite insulation building material as described.
が、５０μｍ以上５００μｍ以下であることを特徴とす
る請求項１又は２記載の複合断熱建材。3. The composite heat insulating building material according to claim 1, wherein the thickness of the coating layer made of the fluororesin sheet is 50 μm or more and 500 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000163692A JP2001301085A (en) | 2000-04-25 | 2000-04-25 | Composite heat insulating building material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000163692A JP2001301085A (en) | 2000-04-25 | 2000-04-25 | Composite heat insulating building material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001301085A true JP2001301085A (en) | 2001-10-30 |
Family
ID=18667413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000163692A Pending JP2001301085A (en) | 2000-04-25 | 2000-04-25 | Composite heat insulating building material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001301085A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117234A (en) | 2010-11-30 | 2012-06-21 | Asahi Chubu Shizai Kk | Incombustible interior panel having covering sheet and attachment structure thereof |
-
2000
- 2000-04-25 JP JP2000163692A patent/JP2001301085A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012117234A (en) | 2010-11-30 | 2012-06-21 | Asahi Chubu Shizai Kk | Incombustible interior panel having covering sheet and attachment structure thereof |
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