JPH04130076A - Decorating method for inorganic building material - Google Patents
Decorating method for inorganic building materialInfo
- Publication number
- JPH04130076A JPH04130076A JP25072190A JP25072190A JPH04130076A JP H04130076 A JPH04130076 A JP H04130076A JP 25072190 A JP25072190 A JP 25072190A JP 25072190 A JP25072190 A JP 25072190A JP H04130076 A JPH04130076 A JP H04130076A
- Authority
- JP
- Japan
- Prior art keywords
- curing
- glass transition
- transition point
- inorganic building
- coating
- 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.)
- Granted
Links
- 239000004566 building material Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 12
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- 239000004568 cement Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 230000009477 glass transition Effects 0.000 claims abstract description 10
- 239000003973 paint Substances 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002537 cosmetic Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- XDRLAGOBLZATBG-UHFFFAOYSA-N 1-phenylpenta-1,4-dien-3-one Chemical compound C=CC(=O)C=CC1=CC=CC=C1 XDRLAGOBLZATBG-UHFFFAOYSA-N 0.000 abstract 3
- 230000032683 aging Effects 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 239000000546 pharmaceutical excipient Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000006253 efflorescence Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 206010037844 rash Diseases 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002987 primer (paints) Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、無機質建材の化粧方法に関し、詳しくは、
いわゆる押出成形により成形されたスレート瓦、外装壁
板などの建材の表面化粧方法の改良に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a method for decorating inorganic building materials.
This invention relates to improvements in surface decoration methods for building materials such as slate roof tiles and exterior wall boards formed by so-called extrusion molding.
従来、セメント瓦、外装壁板などで押出成形により成形
された無機質建材が広く知られている。BACKGROUND ART Conventionally, inorganic building materials formed by extrusion molding, such as cement tiles and exterior wall boards, have been widely known.
これら無機質建材は、他の製造方法によるものも同様で
あるが、そのままであると地色が灰白色〜灰黒色の無彩
色であるので意匠性に乏しく、また表面吸水性を有する
ことから耐吸水性付与を兼ねて各種色彩の化粧塗装を施
すのが普通である。These inorganic building materials are similar to those made by other manufacturing methods, but if they are left as is, the ground color is grayish-white to grayish-black, so they lack design properties, and their surface water absorption makes them resistant to water absorption. It is common to apply decorative coatings in various colors to serve as decoration.
この化粧塗装には、一般にセメント配合物の賦形体を一
次養生し一旦硬化させその表面に下地塗装を施し、オー
トクレーブ養生後に上塗塗装を行う場合と、−次養生前
の未硬化賦形体表面に直ちに下塗塗装し塗膜の乾燥硬化
と賦形体の養生硬化を同時に行い、しかる後上塗塗装を
施してオートクレーブ養生する場合とがある。Generally speaking, this cosmetic coating is carried out by first curing the excipient of the cement mixture, once hardened, and applying a base coat to the surface, and then applying a top coat after curing in an autoclave. In some cases, an undercoat is applied, the coating film is dried and hardened, and the shaped body is cured and cured at the same time, and then a topcoat is applied and the body is cured in an autoclave.
ところで、前者の一次養生を行った後に塗装を行うのは
塗料の下地に対する浸透が殆んど無いので塗膜剥離が生
じやすく、また−次養生、オートクレーブ養生の後に塗
料の乾燥工程を別に要するので製造設備が大掛かりとな
る欠点がある。By the way, when painting after the former primary curing, the paint film hardly penetrates into the base, which tends to cause the paint film to peel off, and also requires a separate drying process for the paint after the secondary curing and autoclave curing. The disadvantage is that the manufacturing equipment is large-scale.
後者の化粧方法は未養生の賦形体に塗装を行うので、塗
料が賦形体表面に浸透し易く塗膜密着強度が非常に良く
なる利点を有し、また塗料乾燥と一次養生とを同時に行
えるので設備も其だけ少なく出来る利点を有する。The latter cosmetic method involves painting the uncured excipient, which has the advantage that the paint easily penetrates into the excipient's surface and the adhesion strength of the coating film is very good.Also, the paint drying and primary curing can be performed at the same time. It has the advantage of requiring less equipment.
従って、同一形状で大量の製品を製造する場合には後者
の化粧手段が採られることが多い。Therefore, when manufacturing a large number of products of the same shape, the latter cosmetic method is often adopted.
しかし、押出成形にあっては押出安定性を得るためスラ
リーを５℃以下に冷却するため押出直後の賦形体は非常
に表面温度が低く、このため通常の塗料ではなかなか硬
化成膜せず、この結果−次養生中セメント成分よりのエ
フロレッセンスの析出を押さえ切れず塗膜面に白亜化を
生し下塗塗装の均一性が■害されることがある欠点があ
った。However, in extrusion molding, in order to obtain extrusion stability, the slurry is cooled to below 5°C, so the surface temperature of the extruded body is extremely low immediately after extrusion.For this reason, it is difficult for ordinary paints to harden and form a film. Results - During the next curing, the precipitation of efflorescence from the cement components could not be suppressed, resulting in chalking on the coating surface and impairing the uniformity of the undercoat.
また、下塗塗装に続いて実施される上塗塗装後に板材の
最終養生を行うオートクレーブ養生時、上２２料のブロ
ッキングを防止するため、各成形品間にセパレータを介
挿したりする必要がありかなり処理が面倒となる問題が
あった。In addition, during autoclave curing, which is the final curing of the board after the top coat is applied following the base coat, it is necessary to insert a separator between each molded product to prevent blocking of the top 22 materials, which requires considerable processing time. There was a troublesome problem.
この発明は上記問題に鑑み、下塗塗装は下地との塗膜密
着性が良く、また−次養生後の上塗塗装を行ってもその
後のオートクレーブ養生等の処理が迅速に行える無機質
建材の化粧方法に関する。In view of the above-mentioned problems, this invention relates to a cosmetic method for inorganic building materials, in which the undercoat has good film adhesion to the base, and even if a topcoat is applied after the next curing, subsequent treatments such as autoclave curing can be quickly performed. .
［課題を解決するに至った技術］
即ち、この発明の無機質建材の化粧方法はセメント配合
物を押出成形して成る賦形体表面に、賦形直後に下塗塗
装を行い、次いで一次養生し、さらに上塗塗装を行い、
オートクレーブ養生を行う無機質建材の製造方法におい
て、前記下塗塗装として、ガラス転移点５℃以下となる
アクリル−スチレン系エマルジョン塗料を塗布し、また
、上塗塗装としてガラス転移点３０℃以上のアクリル−
スチレン系エマルジョン塗料を塗布することを特徴とす
るものである。[Technology that led to solving the problem] That is, in the cosmetic method for inorganic building materials of this invention, a primer coating is applied to the surface of a shaped body made by extruding a cement mixture immediately after shaping, then primary curing, and further Apply top coat,
In the method for manufacturing inorganic building materials that involves autoclave curing, an acrylic-styrene emulsion paint with a glass transition point of 5°C or lower is applied as the undercoat, and an acrylic-styrene emulsion paint with a glass transition point of 30°C or higher is applied as the topcoat.
It is characterized by applying a styrene emulsion paint.
この発明において、セメント配合物より賦形する手段は
、押出法など従来周知の手段が採られ、製造手段につい
ては特に記する点は無い。In this invention, conventionally known means such as extrusion methods are used to shape the cement mixture, and there is no particular point to mention regarding the manufacturing method.
本願発明において、−次養生前、賦形直後の成形体表面
には、ガラス転移点（以下ｒＴｇＪ）５℃以下のアクリ
ル−スチレン系エマルジョン塗料を塗布する。In the present invention, an acrylic-styrene emulsion paint having a glass transition point (hereinafter referred to as rTgJ) of 5° C. or less is applied to the surface of the molded product immediately after shaping and before the next curing.
賦形体は未硬化であること、及び塗料はエマルジョンで
あるため、セメント粒子にエマルジョン塗料が良く浸透
し、相互の密着性が非常に良くなる。Since the excipient is uncured and the paint is an emulsion, the emulsion paint penetrates well into the cement particles, resulting in very good adhesion to each other.
また、Ｔｇが５℃以下であるため、押出成形体表面が５
℃以下の低温であっても塗膜硬化が確実に進み長時間を
必要とせず硬化する。In addition, since the Tg is 5°C or less, the surface of the extruded product is 5°C or less.
Even at low temperatures below ℃, the coating film hardens reliably and does not require a long period of time.
従って、−次養生中賦形体表面は、硬化塗膜で密に覆わ
れ、エフロレフセンスの析出は、はぼ完全に押さえられ
る。Therefore, during the second curing, the surface of the excipient is densely covered with a cured coating film, and the precipitation of efflorescence is almost completely suppressed.
なお、Ｔｇを５℃以下とするのは塗膜硬化が遅れ、これ
よりも高いと迅速な一次養生行程への移行が実現出来な
くなるからである。The reason why Tg is set to 5° C. or lower is that the curing of the coating film is delayed, and if it is higher than this, a rapid transition to the primary curing process cannot be realized.
そして、−次養生後、下塗塗膜にＴｇ３０℃以上のアク
リル−スチレン系エマルジョン塗料を上塗りとして塗布
する。After the second curing, an acrylic-styrene emulsion paint having a Tg of 30° C. or more is applied as a top coat to the undercoat film.
上塗りとして、下塗と同質の塗料を使用するのは上塗塗
膜の密着性を良くし、かつ美麗な化粧表面とするためで
ある。The reason why a paint of the same quality as the undercoat is used as the topcoat is to improve the adhesion of the topcoat film and to provide a beautiful decorative surface.
また、この上塗塗料にＴｇ３０℃以上のエマルジョン塗
料を使用するのは、−次養生後は板温か３０〜５０℃に
なっておりこの温度との相関により塗装後オートクレー
ブ養生を開始するまでに上塗塗料を成膜させるためであ
り、オートクレーブ養生時成形品のブロッキングを防止
するためである。In addition, the reason why an emulsion paint with a Tg of 30°C or higher is used for this topcoat is that after the next curing, the plate temperature is 30 to 50°C, and due to the correlation with this temperature, the topcoat must be coated before the autoclave curing starts. This is to form a film and to prevent blocking of the molded product during autoclave curing.
以上のように、下塗り、上塗りより非常に安定したかつ
、耐候性の良い化粧塗膜が得られる。As described above, a decorative coating film that is much more stable and has better weather resistance than an undercoat or a topcoat can be obtained.
次に、この発明の詳細な説明する。 Next, the present invention will be explained in detail.
セメント５０重量部、珪砂５０重量部、粘土１５重量部
、無機質顔料３重量部、バルブ１〜３重量部及び押出助
剤としてメチルセルロース１重量部ニ水を２５〜２８重
量部添加して均一混合し粘土状物とし、これを押出成形
して、厚さ１．２ ｃｍ、長さ３０■、幅２０ｃｍの板
状成形体を賦形し、その直後に直ちに表１階１に示す組
成のアクリル−スチレン系エマルジョン塗料を塗布量５
０〜６０ｇ／ｍ”で塗布した。50 parts by weight of cement, 50 parts by weight of silica sand, 15 parts by weight of clay, 3 parts by weight of inorganic pigment, 1 to 3 parts by weight of bulbs, 1 part by weight of methylcellulose as an extrusion aid, and 25 to 28 parts by weight of water were added and mixed uniformly. This was made into a clay-like material, which was extruded to form a plate-shaped molded product with a thickness of 1.2 cm, a length of 30 cm, and a width of 20 cm. Application amount of styrene emulsion paint: 5
It was applied at a rate of 0 to 60 g/m''.
次に、５０℃以上×９５χＲ１＋の条件で１０時間−次
養生し、次いで、表１階２に示す組成のアクリルスチレ
ン系エマルジョン塗料を塗布量８０〜１２０ ｇ／ＩＴ
＋２で塗布した。Next, it was cured for 10 hours under the conditions of 50°C or higher x 95χR1+, and then an acrylic styrene emulsion paint with the composition shown in Table 1, Floor 2 was applied in an amount of 80 to 120 g/IT.
It was applied at +2.
次いで、この塗装板材を乾燥炉にて１５０ ℃で３分間
乾燥させ、８．５ａｔｍ Ｘ １０時間オートクレーブ
養生を行った。Next, this coated plate material was dried in a drying oven at 150° C. for 3 minutes, and autoclaved at 8.5 atm for 10 hours.
表 １
なお、比較例として、７ｇ２７〜２８℃、最低成膜温度
Ｏ℃のアクリル−スチレン系エマルジョン塗料（比較例
１）、及びＴｇ１８〜１９℃１最低成膜温度Ｏ℃のアク
リル−スチレン系エマルジョン塗料（比較例２）で下塗
りを行い、実施例と同し条件で一次養生し、その後これ
ら各下塗塗装表面にＴｇ ２０℃、最低成膜温度０℃の
アクリル−スチレン系エマルジョン塗料で上塗りを行い
（比較例１．２）実施例と同し条件でオートクレーブ養
生を行った。Table 1 As a comparative example, an acrylic-styrene emulsion paint (comparative example 1) with a Tg of 27-28°C and a minimum film-forming temperature of 0°C, and an acrylic-styrene-based emulsion with a Tg of 18-19°C and a minimum film-forming temperature of 0°C. An undercoat was applied with the paint (Comparative Example 2), and primary curing was performed under the same conditions as in the example. After that, each undercoat surface was overcoated with an acrylic-styrene emulsion paint with a Tg of 20°C and a minimum film formation temperature of 0°C. (Comparative Example 1.2) Autoclave curing was performed under the same conditions as in the example.
一次養生後のエフロレッセンスの析出、塗装状況及びオ
ートクレーブ養生後のブロッキングを試験したところ、
表２の結果となった。When testing the precipitation of efflorescence after primary curing, coating condition, and blocking after autoclave curing,
The results are shown in Table 2.
表 ２
〔効果〕
以上説明したように、この発明は一次養生前における塗
装用塗料としてガラス転移点が５℃以下のものを使用す
るので押出成形体表面温度が非常に低くても養生前に十
分に硬化するので、エフロレッセンスの析出が充分に押
さえられ、従って上塗塗膜の剥離も生し難く、密着性の
良い化粧層を得ることができるのである。Table 2 [Effects] As explained above, this invention uses a coating material with a glass transition point of 5°C or less as a coating material before primary curing, so even if the surface temperature of the extruded product is very low, it can be used sufficiently before curing. Since the composition is hardened, the precipitation of efflorescence is sufficiently suppressed, and peeling of the top coat is therefore less likely to occur, making it possible to obtain a decorative layer with good adhesion.
また、オートクレーブ前における上２２料としてはガラ
ス転移点３０℃以上のものを使用するため板温との相関
によりオートクレーブ養生前であっても塗膜の成膜化が
進行し、オートクレーブ養生中における塗膜ブロッキン
グも防止され、各工程への移行もスムーズに行えて大量
生産が容易に実現できるのである。In addition, since the top 22 material used before autoclaving has a glass transition point of 30°C or higher, coating film formation progresses even before autoclave curing due to the correlation with plate temperature, and coating during autoclave curing. Membrane blocking is also prevented, transition to each process is smooth, and mass production can be easily realized.
Claims (1)
、賦形直後に下塗塗装を行い、次いで一次養生し、さら
に上塗塗装を行い、オートクレーブ養生を行う無機質建
材の製造方法において、前記下塗塗装として、ガラス転
移点５℃以下となるアクリル−スチレン系エマルジョン
塗料を塗布し、また、上塗塗装としてガラス転移点３０
℃以上のアクリル−スチレン系エマルジョン塗料を塗布
することを特徴とする無機質建材の化粧方法。(1) In a method for manufacturing an inorganic building material, the surface of a shaped body formed by extrusion molding a cement mixture is coated with an undercoat immediately after shaping, then subjected to primary curing, further coated with a topcoat, and then cured in an autoclave. As a coating, an acrylic-styrene emulsion paint with a glass transition point of 5°C or lower is applied, and as a top coat, a glass transition point of 30°C is applied.
A cosmetic method for inorganic building materials characterized by applying an acrylic-styrene emulsion paint at a temperature of ℃ or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25072190A JPH0742181B2 (en) | 1990-09-19 | 1990-09-19 | Makeup method for inorganic building materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25072190A JPH0742181B2 (en) | 1990-09-19 | 1990-09-19 | Makeup method for inorganic building materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04130076A true JPH04130076A (en) | 1992-05-01 |
| JPH0742181B2 JPH0742181B2 (en) | 1995-05-10 |
Family
ID=17212066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25072190A Expired - Lifetime JPH0742181B2 (en) | 1990-09-19 | 1990-09-19 | Makeup method for inorganic building materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0742181B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993007011A1 (en) * | 1991-09-30 | 1993-04-15 | Eurotech Technologies Inc. | Acrylic-containing facing material for buildings |
| JPH10310739A (en) * | 1997-05-12 | 1998-11-24 | Mitsubishi Chem Basf Co Ltd | Water-based primer coat for aging acceleration of inorganic porous base material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2495394A1 (en) | 2011-03-02 | 2012-09-05 | Silvino Pompeu Santos | Tunnel with exterior tube and reinforced interior tube |
-
1990
- 1990-09-19 JP JP25072190A patent/JPH0742181B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993007011A1 (en) * | 1991-09-30 | 1993-04-15 | Eurotech Technologies Inc. | Acrylic-containing facing material for buildings |
| JPH10310739A (en) * | 1997-05-12 | 1998-11-24 | Mitsubishi Chem Basf Co Ltd | Water-based primer coat for aging acceleration of inorganic porous base material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0742181B2 (en) | 1995-05-10 |
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