JPH0328182A - Inorganic board - Google Patents
Inorganic boardInfo
- Publication number
- JPH0328182A JPH0328182A JP16338389A JP16338389A JPH0328182A JP H0328182 A JPH0328182 A JP H0328182A JP 16338389 A JP16338389 A JP 16338389A JP 16338389 A JP16338389 A JP 16338389A JP H0328182 A JPH0328182 A JP H0328182A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- acrylic emulsion
- inorganic
- cured
- inorganic board
- 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
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000839 emulsion Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000003973 paint Substances 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 10
- 238000006253 efflorescence Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 8
- 206010037844 rash Diseases 0.000 abstract description 8
- 239000004568 cement Substances 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010425 asbestos Substances 0.000 abstract description 5
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 5
- 239000004925 Acrylic resin Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 229920000178 Acrylic resin Polymers 0.000 abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 3
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 3
- 239000004571 lime Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000011398 Portland cement Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 125000005250 alkyl acrylate group Chemical group 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000009472 formulation Methods 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、無機質板に関するものである．さらに詳し
くは、この発明は、養生中の結露水により発生し易いエ
フ口レッセンスを抑止することのできる表面化粧無機質
板に関するものである．（従来の技術）
建築用の外装材、屋根材等として、セメントにアスベス
ト、ロックウール、バルプ等を配合して成形した無機質
板が広く使用されてきており、これらの無機質板につい
ては、その表面に塗料を塗布して化粧することが行なわ
れてきてもいる．これらの無機質板を成形する法として
は、抄造法、押出し法、あるいは注型法などが知られて
おり、たとえば抄造法による場合には、第２図に示した
ように、ボルトランドセメント（ＰＣ）、アスベスト、
バルプ等からなる原料スラリー《ア〉から抄造ドラム（
イ）によってシート（ウ〉を抄造し、プレスロール（工
）で加工脱水した後に、養生槽あるいはオートクレープ
（オ）において養生し、その後、表面に塗料（力）を塗
布し、焼付装置《キ〉によって焼付硬化させて、表面に
化粧塗膜（ク〉を有する無機質板（ケ）を製造している
．
（発明が解決しようとする課題）
たとえばこの第２図に示したような抄造法等によって製
造することのできる無機質板は、表面化粧によって様々
な意匠の建築材として用いられるが、これらの無機質板
をオートクレープ《オ）養生によって製造する場合には
、ボルトランドセメント、石灰等のアルカリ物質を原料
とする無機質板の養生中に結露水によって著しいエフロ
レツセンス（ＣａＣＯｓ）が発生し易いという問題があ
った．
このエフロレヅセンスの発生によって、建築材としての
機能が損なわれ、また、表面に形成した化粧塗ＷＡ（ク
）が剥離し易くなるという欠点が避けられなかった．
この発明は、以上通りの事情に鑑みてなされたものであ
り、従来の無機質板の欠点を解消し、オートクレープ養
生時のエフロレッセンス発生を抑止し、化粧塗膜の密着
性を向上させることのできる改善された無機質板を提供
することを目的としている．
（課題を解決するための手段）
この発明は、上記の課題を解決するものとして、養生前
に、粒子径が０．２０μｍ以下で、無機質板の比重が大
きいほど粒子径を小さくしたアクリルエマルジョンを無
機質板表面に塗布してなることを特徴とする無機質板を
提供する．
この無機質板としては、抄造法、押出し成形法等の適宜
な方法によって成形したものであってよく、その配合も
、ボルトランンドセメント（ｐｃ）等のセメントと、ア
スベスト、ロックウール、バルプなどの繊維成分に、シ
リカ粉、石灰、その他の添加材を適宜に加えたスラリー
組成物、あるいは混合物とすることができる．これらの
配合には従来公知の配合成分を用いることができる．養
生前に表面に塗布するアクリルエマルジョンのアクリル
系樹脂としてはアクリル酸アルキルエステル樹脂、アク
リル酸・アクリル酸アルキルエステル共重合物、メタク
リル酸・アクリル酸アルキルエステル共重合物、エチレ
ン・アクリル酸アルキルエステル共重合物、塩化ビニル
・アクリル酸アルキルエステル共重合物、メタクリル酸
アルキルエステル樹脂、アクリル酸アルキルエステル・
エボキシ共重合物等の適宜なものを使用することができ
る．無機質板の使用環境等を考慮して、その採用を選択
することができる．
これらのアクリル系樹脂と水との配合は広い範囲の割合
とすることができ、たとえば樹脂：水の重量比で、４０
〜７ ０ ： １００程度とすることができ、必要に応
じて乳化剤の所要量を使用することができる。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an inorganic board. More specifically, the present invention relates to a surface-decorated inorganic board capable of suppressing F-resence that is likely to occur due to dew condensation during curing. (Prior art) Inorganic boards made by blending cement with asbestos, rock wool, bulp, etc. have been widely used as exterior materials and roofing materials for buildings. It has also been practiced to apply paint to make up the surface of the body. As methods for forming these inorganic plates, there are known methods such as paper making, extrusion, and casting. For example, in the case of paper making, Bolt Land Cement (PC ),asbestos,
A papermaking drum (
After forming a sheet (C) using a press roll (a) and dewatering it, it is cured in a curing tank or an autoclave (o), and then a paint (a) is applied to the surface, and a baking device (a) is used. 〉 is baked and hardened to produce an inorganic board with a decorative coating on the surface. (Problem to be solved by the invention) The inorganic boards that can be produced by this method are used as building materials with various designs depending on the surface decoration. However, when these inorganic boards are produced by autoclave curing, alkali such as Bortland cement or lime is used. There has been a problem in that during curing of inorganic boards made from these materials, condensed water tends to generate significant efflorescens (CaCOs).The occurrence of this efflorescens impairs the function of the material as a building material, and also causes damage to the surface. This invention was made in view of the above-mentioned circumstances, and it solves the drawbacks of conventional inorganic plates and makes it easier to peel off the formed decorative coating WA (ku). It is an object of the present invention to provide an improved inorganic board capable of suppressing the occurrence of efflorescence during curing and improving the adhesion of a decorative coating film. In order to solve this problem, an inorganic material is produced by applying an acrylic emulsion having a particle size of 0.20 μm or less and the particle size smaller as the specific gravity of the inorganic board becomes larger, to the surface of the inorganic board before curing. The inorganic board may be formed by an appropriate method such as paper forming or extrusion, and its composition may include cement such as Boltland Cement (PC), asbestos, rock, etc. It can be a slurry composition or a mixture in which silica powder, lime, and other additives are appropriately added to fiber components such as wool and bulp.For these formulations, conventionally known formulation components can be used. ．Acrylic resins for acrylic emulsions applied to the surface before curing include acrylic acid alkyl ester resins, acrylic acid/acrylic acid alkyl ester copolymers, methacrylic acid/acrylic acid alkyl ester copolymers, and ethylene/acrylic acid alkyl esters. Copolymer, vinyl chloride/acrylic acid alkyl ester copolymer, methacrylic acid alkyl ester resin, acrylic acid alkyl ester/
Appropriate materials such as epoxy copolymers can be used. The use of inorganic plates can be selected by considering the environment in which they will be used. The proportions of these acrylic resins and water can vary over a wide range; for example, the weight ratio of resin:water is 40
~70: It can be about 100, and the required amount of emulsifier can be used as needed.
このアクリルエマルジョンはその固形分の粒子径を０．
２０μｍ以下とし、無機質板の比重が大きくなるほどそ
の粒径を小さくする．この場合、たとえば抄造法による
通常のスレート製品においては、その粒子径を０．１５
〜０．２０μｍ程度に、また、押出戒形品等で比重が１
．８程度以上の比較的大きな比重のものは、０．０５〜
０．０８μｍ程度まで小さくするのが好ましい．
この発明においては、たとえば第１図に示したように、
抄造法、押出し等によって製造した無機質シ一ト（１）
をオートクレープ等によって養生する前に、その表面に
、上記の通りのアクリルエマルジョンを塗布し、これを
オートクレープ等によって養生することにより被覆層（
２〉を形成する，
次いでその後、表面化粧のために塗料、たとえばアクリ
ルエマルジョン塗料を塗布するすることができる．塗膜
（３）の密着性は良好なものとなる．
（作 用）
この発明においては、養生前にアクリルエマルジョンに
よって表面被覆するため、養生時の結露水によって、無
機質板にエフロレッセンスが発生することを抑止するこ
とができる．
また、このアクリルエマルジョンの塗布によって、塗膜
の密着性は著しく向上する．このため、塗膜の剥離全抑
止することができる．
（実施例）
以下、実施例を示し、さらに詳しくこの発明の無機質板
について説明する．
まず、次の配合からなる混合物のスラリーより、ハチエ
ッグマシンおよび押出法によってシートを製造する．
ボルトランンドセメント ６０（重量部）シリカ粉
４０
アスベスト ２０
バルプ １
ハチエッグマシンによって製造したシートはプレス脱水
により成形した．この時の圧力は８ ０ ｋｇ／一とし
た．また押出し成形品についてはこのプレス脱水は行わ
なかった．
次いで、８０℃、１００％ＲＨＩＩ生槽で、約１日湿熱
養生した．
この成形シートに表１および表２に示した粒子径のアク
リルエマルジョンを塗布した．この時のエマルジョンと
しては、アクロナール（油化バーディッシュ社製）を用
いた．
その後、オートクレープにおいて、１６５℃で６時間養
生した．１６５℃までの昇温は３時間、１６５℃から常
温への降温は４時間で行った．次いで、アクリルエマル
ジョン塗料を塗布した．塗布量は５ ０ ｇ ／ ｃｄ
（固形分）とし、焼付は、１４０℃１０分間で行った
．
得られた無機質板についてエフロレッセンス発生と塗膜
の密着性を評価した．
塗膜の密着性については、セロテープ密着試験により評
価した．
これらの結果を示したものが表１および表２である。This acrylic emulsion has a solid particle size of 0.
The particle size should be 20 μm or less, and the larger the specific gravity of the inorganic plate, the smaller the particle size. In this case, for example, in the case of ordinary slate products made by the papermaking method, the particle size is 0.15
~0.20 μm, and extruded products with a specific gravity of 1
．． Those with a relatively large specific gravity of about 8 or more are 0.05~
It is preferable to reduce the size to about 0.08 μm. In this invention, for example, as shown in FIG.
Inorganic sheet (1) manufactured by papermaking method, extrusion, etc.
Before curing by autoclaving etc., apply the acrylic emulsion as described above to the surface and curing it by autoclaving etc. to form a coating layer (
2), and then a paint, for example an acrylic emulsion paint, can be applied for surface decoration. The adhesion of the coating film (3) is good. (Function) In this invention, since the surface is coated with acrylic emulsion before curing, it is possible to prevent efflorescence from occurring on the inorganic board due to dew condensation during curing. Furthermore, by applying this acrylic emulsion, the adhesion of the paint film is significantly improved. Therefore, peeling of the paint film can be completely prevented. (Example) Hereinafter, the inorganic plate of the present invention will be explained in more detail with reference to Examples. First, a sheet is manufactured from a slurry of a mixture consisting of the following formulation using a bee egg machine and extrusion method. Boltland Cement 60 (parts by weight) Silica powder
40 Asbestos 20 Vulp 1 The sheet manufactured by the bee egg machine was molded by press dehydration. The pressure at this time was 80 kg/1. Also, this press dehydration was not performed for extruded products. Then, it was cured under moist heat for about 1 day in a 100% RHII tank at 80°C. An acrylic emulsion having the particle size shown in Tables 1 and 2 was applied to this molded sheet. Acronal (manufactured by Yuka Bardish Co., Ltd.) was used as the emulsion at this time. Thereafter, it was cured in an autoclave at 165°C for 6 hours. The temperature was raised to 165°C in 3 hours, and the temperature was lowered from 165°C to room temperature in 4 hours. Next, acrylic emulsion paint was applied. Coating amount is 50 g/cd
(solid content), and baking was performed at 140°C for 10 minutes. The resulting inorganic board was evaluated for efflorescence generation and paint film adhesion. The adhesion of the paint film was evaluated using a sellotape adhesion test. Tables 1 and 2 show these results.
表１および票２から明らかなように、この発明の実施例
の場合には、いずれもエフロレッセンスの発生が抑止さ
れ、塗膜の密着性も優れていることがわかる．
表１
表２
（注）エフロレッセンス
Ａ：発生なし
Ｂ：一部発生
塗膜密着性
Ａ：剥離なし
Ｂ；剥離あり
（注〉エフロレッセンス
Ａ：発生なし
Ｂ：一部発生
塗膜密着性
Ａ：剥離なし
Ｂ：剥離あり
｛発明の効果）
この発明により、以上詳しく説明した通り、エフロレッ
センスの発生が抑止され、また塗膜の密着性の向上した
無機質板が提供される．As is clear from Table 1 and Table 2, it can be seen that in all the examples of the present invention, the occurrence of efflorescence was suppressed and the adhesion of the coating film was excellent. Table 1 Table 2 (Note) Efflorescence A: No occurrence B: Partial occurrence Paint film adhesion A: No peeling B; Peeling (Note) Efflorescence A: No occurrence B: Partial occurrence Paint film adhesion A: No peeling B: With peeling {Effects of the invention] As explained in detail above, the present invention provides an inorganic board in which the occurrence of efflorescence is suppressed and the adhesion of the coating film is improved.
第１図は、この発明の無機質板を例示した斜視図である
．
第２図は、抄造法による製造を例示した工程断面図であ
る．
１・・・無機質シート
２・・・アクリルエマルジョン被覆層
３・・・塗 膜FIG. 1 is a perspective view illustrating an inorganic plate of the present invention. Figure 2 is a process cross-sectional view illustrating the manufacturing process using the papermaking method. 1... Inorganic sheet 2... Acrylic emulsion coating layer 3... Paint film
Claims (2)
板の比重が大きいほど粒子径を小さくしたアクリルエマ
ルジョンを無機質板表面に塗布してなることを特徴とす
る無機質板。(1) An inorganic plate characterized in that, before curing, an acrylic emulsion having a particle size of 0.20 μm or less and whose particle size becomes smaller as the specific gravity of the inorganic plate increases is applied to the surface of the inorganic plate.
てなる請求項（１）記載の無機質板。(2) The inorganic board according to claim (1), wherein a paint film is formed on the surface coated with the acrylic emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16338389A JPH0328182A (en) | 1989-06-26 | 1989-06-26 | Inorganic board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16338389A JPH0328182A (en) | 1989-06-26 | 1989-06-26 | Inorganic board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0328182A true JPH0328182A (en) | 1991-02-06 |
Family
ID=15772845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16338389A Pending JPH0328182A (en) | 1989-06-26 | 1989-06-26 | Inorganic board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328182A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007176772A (en) * | 2005-12-28 | 2007-07-12 | Kubota Matsushitadenko Exterior Works Ltd | Method of producing building panel, and building panel |
| WO2009020925A1 (en) * | 2007-08-03 | 2009-02-12 | Gilbert Garitano | Systems and methods for forming images on cement fiber board materials and other surfaces |
-
1989
- 1989-06-26 JP JP16338389A patent/JPH0328182A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007176772A (en) * | 2005-12-28 | 2007-07-12 | Kubota Matsushitadenko Exterior Works Ltd | Method of producing building panel, and building panel |
| WO2009020925A1 (en) * | 2007-08-03 | 2009-02-12 | Gilbert Garitano | Systems and methods for forming images on cement fiber board materials and other surfaces |
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