JPH0420873B2 - - Google Patents
Info
- Publication number
- JPH0420873B2 JPH0420873B2 JP6313285A JP6313285A JPH0420873B2 JP H0420873 B2 JPH0420873 B2 JP H0420873B2 JP 6313285 A JP6313285 A JP 6313285A JP 6313285 A JP6313285 A JP 6313285A JP H0420873 B2 JPH0420873 B2 JP H0420873B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- calcium silicate
- resin
- surface layer
- silicate 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 239000002344 surface layer Substances 0.000 claims description 14
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 12
- 239000000378 calcium silicate Substances 0.000 claims description 12
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 238000001723 curing Methods 0.000 description 4
- 238000013008 moisture curing Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は硅酸カルシウム板の下地処理方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for treating the surface of a calcium silicate board.
従来、硅酸カルシウム板の下地処理方法として
は、硅酸カルシウム板（以下基材ともいう）の表
面を研削した後、低分子の湿気硬化型イソシアネ
ート樹脂からなるシーラーを、固形分４ｇ／m2の
割合でロールコーターを用いて塗布し、自然乾燥
によりシーラー材を含浸硬化させて後24時間〜48
時間経過後、その上に紫外線硬化型目止め剤を塗
布して、紫外線ランプにて紫外線を照射し、硬化
後320番程度のサンデイングペーパーにより研摩
して塗装の下地を形成させる方法が一般的である
が、実際にこの下地処理された硅酸カルシウム板
を不燃性化粧板として内装に用いられた場合、施
行時に基材が切断あるいは養生テープの除去等の
外力による剥離作用の条件下で、しばしば塗装膜
が基材から脱落する事故が起こつていた。
Conventionally, as a surface treatment method for calcium silicate boards, after grinding the surface of the calcium silicate board (hereinafter also referred to as the base material), a sealer made of a low-molecular moisture-curing isocyanate resin was applied at a solid content of 4 g/m 2 Apply using a roll coater at a ratio of
After a period of time has elapsed, a common method is to apply an ultraviolet curable sealant on top of it, irradiate it with ultraviolet rays using an ultraviolet lamp, and after curing, sand it with sanding paper of about 320 grit to form a base for painting. However, when this base-treated calcium silicate board is actually used as a noncombustible decorative board for interior decoration, under conditions where the base material is peeled off by external force such as cutting or removing curing tape during installation, Accidents often occurred in which the paint film fell off from the base material.
以上の事故原因は下地処理された表層が破壊さ
れるためであつて、一般に硅酸カルシウム板の表
面化粧をする場合、基材の表面をサンデイングす
るが、しかしながらこの基材は軟らかく多孔質
で、パルプ石綿等の繊維質が多く含まれているの
で、サンデイングされた基材の表面は、毛羽立つ
ており、孔にはサンデイングした際の粉末が入り
込み、又サンデイングペーパーの砥粒により基材
の表面をきずつけて基材の組織が破壊され、表層
下部より浮き上がつた状態になつている等の理由
により通常の下地処理では基材の表層部を強固に
できないことが判明した。 The cause of the above accident is that the surface layer that has been treated as a base is destroyed. Generally, when applying surface decoration to a calcium silicate board, the surface of the base material is sanded, but this base material is soft and porous. Because it contains a lot of fibrous material such as pulp asbestos, the surface of the sanded base material is fluffy, and the powder from sanding gets into the pores, and the abrasive grains of the sanding paper cause the surface of the base material to become fluffy. It was found that the surface layer of the base material could not be strengthened by normal surface treatment for reasons such as the structure of the base material being destroyed and the surface layer rising above the lower part of the surface.
本発明は、上記問題点を解決し、強固で平滑性
を有する表層部を備えた下地処理層をもつ硅酸カ
ルシウム板を提供せんとするものである。
The present invention aims to solve the above-mentioned problems and provide a calcium silicate plate having a base treatment layer with a strong and smooth surface layer.
本発明は、硅酸質、石灰質及び繊維質を主成分
とする硅酸カルシウム板の下地処理方法におい
て、分子量の差異のある樹脂を適宜量ずつ配合し
て後、所定の時間をおいて、熱風、遠赤外線等の
乾燥手段を用い樹脂の溶媒の一部を蒸発させ、基
材への樹脂の浸透を停止させて、基材の表層下部
に分子量の小さい樹脂を各々定着させて硬化させ
ることにより、表層部を強化させるようにしたも
のである。
The present invention is a method for treating the surface of a calcium silicate board whose main components are silicic acid, calcareous material, and fibrous material. By evaporating a part of the resin solvent using drying means such as far infrared rays, stopping the penetration of the resin into the base material, and fixing each resin with a small molecular weight in the lower surface layer of the base material and curing it. , the surface layer is strengthened.
〔実施例〕、
実施例 １
80番のサンドペーパーを用いて、基材の表面を
研削し、その表面に分子量が異なる二種類の湿気
硬化型イソシアネート樹脂を等量宛混合シーラー
剤とし、これを４ｇ／m2苑固形分を含むように基
材表面に塗布して自然乾燥させたところ、分子量
の小さい方の樹脂は速く浸透して表層下部を形成
し、分子量の大きい方の樹脂は表層上部を形成し
て毛羽あるいは微少孔等を固着させ、かつ基材表
面の破壊された部分を強固なものとして形成でき
た。[Example], Example 1 The surface of the base material was ground using No. 80 sandpaper, and two types of moisture-curing isocyanate resins with different molecular weights were mixed into equal amounts as a sealer agent on the surface. When it was applied to the surface of the substrate to contain 4 g/ m2 solids and allowed to dry naturally, the resin with a smaller molecular weight penetrated quickly and formed the lower surface layer, while the resin with a larger molecular weight formed the upper surface layer. This made it possible to fix fluff or micropores, and to make the broken parts of the substrate surface stronger.
実施例 ２
サンドペーパーで研摩された基材に湿気硬化型
インソシアネート樹脂を主成分とするシーラー剤
を４ｇ／m2の割合で塗布後約40秒後に熱風を表面
に吹き付け、シーラー剤に含有する溶剤を蒸発さ
せる。このシーラー塗布後熱風を吹き付ける迄の
時間は、基材へのシーラー剤の吸込速度により調
整する。溶剤の蒸発したシーラー剤中の樹脂分は
表層上部及び表層下部に分布して定着した。この
ようにして下地処理の施された基材に塗布した目
止め剤あるいは塗料は、シーラー樹脂と密着して
強固な塗膜を形成し得た。Example 2 After about 40 seconds after applying a sealant containing a moisture-curing insocyanate resin as a main component to a base material polished with sandpaper at a rate of 4 g/m 2 , hot air was blown onto the surface and the sealer contained in the sealer was applied. Evaporate the solvent. The time period after application of the sealer until hot air is blown is adjusted by the rate at which the sealer is sucked into the base material. The resin content in the sealer after the solvent evaporated was distributed and fixed in the upper and lower parts of the surface layer. The filler or paint applied to the base material treated in this manner was able to adhere closely to the sealer resin to form a strong coating film.
本発明は以上のように、硅酸カルシウム板の下
地処理方法において、分子量の差異のある樹脂を
混合し、前記カルシウム板よりなる基材に塗布後
乾燥手段で樹脂の溶媒の一部を蒸発させ、基材の
表層下部に分子量の小さい樹脂を、表層上部に分
子量の大きい樹脂を定着させ硬化させるようにし
たので、基材の表層部が効果的に硬化されて施行
時の切断の際あるいは養生テープをはがす際も剥
離を生ずることのないすぐれた表面保護効果を奏
する硅酸カルシウム板が得られるものである。
As described above, the present invention provides a method for treating the base of a calcium silicate board, in which resins having different molecular weights are mixed, and after being applied to the base material made of the calcium board, a part of the solvent of the resin is evaporated by a drying means. Since the resin with a low molecular weight is fixed and cured in the lower part of the surface layer of the base material and the resin with a higher molecular weight is fixed in the upper part of the surface layer, the surface layer of the base material is effectively cured and can be used during cutting during installation or during curing. A calcium silicate plate is obtained which exhibits an excellent surface protection effect without peeling even when the tape is removed.
Claims (1)
酸カルシウム板の下地処理方法において、分子量
の差異のある樹脂を適宜量ずつ配合して、前記硅
酸カルシウム板の表面に塗布して後、所定の時間
をおいて熱風、遠赤外線等の乾燥手段を用い樹脂
の溶媒の一部を蒸発させ、基材への樹脂の浸透を
停止させて、基材の表層下部に分子量の小さい樹
脂を、基材の表層上部に分子量の大きい樹脂を
各々定着させて硬化させることにより表層部を強
化させるようにしたことを特徴とする硅酸カルシ
ウム板の下地処理方法。1. In a method for surface treatment of calcium silicate boards whose main components are silicic acid, calcareous, and fibrous, resins with different molecular weights are blended in appropriate amounts and applied to the surface of the calcium silicate board. After a predetermined period of time, a part of the solvent of the resin is evaporated using drying means such as hot air or far infrared rays, and the penetration of the resin into the base material is stopped. 1. A method for treating a surface of a calcium silicate board, characterized in that the surface layer is strengthened by fixing and curing resins each having a large molecular weight on the upper surface layer of the base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6313285A JPS61219781A (en) | 1985-03-26 | 1985-03-26 | Undertreatment for calcium silicate board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6313285A JPS61219781A (en) | 1985-03-26 | 1985-03-26 | Undertreatment for calcium silicate board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61219781A JPS61219781A (en) | 1986-09-30 |
| JPH0420873B2 true JPH0420873B2 (en) | 1992-04-07 |
Family
ID=13220433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6313285A Granted JPS61219781A (en) | 1985-03-26 | 1985-03-26 | Undertreatment for calcium silicate board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61219781A (en) |
-
1985
- 1985-03-26 JP JP6313285A patent/JPS61219781A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61219781A (en) | 1986-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |