JPH07156112A - Method for treating surface of wood - Google Patents
Method for treating surface of woodInfo
- Publication number
- JPH07156112A JPH07156112A JP30444093A JP30444093A JPH07156112A JP H07156112 A JPH07156112 A JP H07156112A JP 30444093 A JP30444093 A JP 30444093A JP 30444093 A JP30444093 A JP 30444093A JP H07156112 A JPH07156112 A JP H07156112A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- coated
- application
- water
- amount
- 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
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、長期に亙って屋外での
使用に耐え得る木材の表面処理法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method for wood which can withstand outdoor use for a long period of time.
【０００２】[0002]
【従来の技術】従来一般に、屋外で使用される木材は、
その表面に透明あるいは不透明の屋外用樹脂塗料を塗布
して使用される。2. Description of the Related Art Generally, wood used outdoors is
It is used by applying a transparent or opaque outdoor resin coating on its surface.
【０００３】ところが、長期に亙って屋外で使用するう
ちに、木材が大気中の水分等を吸収するために、木材表
面と塗料塗膜との間の密着性の低下を招いて、塗料塗膜
の剥離等の損傷を生じるという問題があり、耐候性を維
持することが難しかった。However, since the wood absorbs moisture in the atmosphere during long-term outdoor use, the adhesion between the surface of the wood and the paint film is deteriorated, and the paint is applied. There is a problem that damage such as peeling of the film occurs, and it is difficult to maintain weather resistance.
【０００４】そこで、木材との密着性を向上させるため
に、従来次のような種々の方策が採られてきた。 （１）塗料そのものの改良を行う。 （２）塗料を塗布する前に、ＣｒＯ3、Ｃｒ2Ｏ3、Ｃｒ2
（ＮＯ3）、ＺｎＯ等によりプレ処理を行う。 （３）ＷＰＣを採用する。 （４）エステル、エーテル、アセチル、ホルマール化等
の処理を行う。Therefore, in order to improve the adhesion to wood, the following various measures have hitherto been taken. (1) Improve the paint itself. (2) Before applying the paint, CrO 3 , Cr 2 O 3 , Cr 2
Pre-treatment is performed with (NO 3 ) or ZnO. (3) Adopt WPC. (4) Treatment with ester, ether, acetyl, formalization, etc. is performed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前述し
た各方法では、それぞれ次に述べる問題があった。 （１）塗料の改良によっても、長期に亙って屋外での密
着性（木材と塗膜との密着性）を維持することはできな
かった。 （２）密着性は向上するものの、ＣｒＯ3等を用いた処
理では、木材が変色する問題があった。 （３）密着性は向上するものの、コスト増を招き、また
木材の質感が低下する問題があった。 （４）密着性は向上するものの、木材全体に処理を行う
ため、設備の増大とそれに伴うコスト増大の問題があっ
た。However, each of the above-mentioned methods has the following problems. (1) Even by improving the paint, it was not possible to maintain the outdoor adhesion (adhesion between the wood and the coating film) over a long period of time. (2) Although the adhesion is improved, the treatment with CrO 3 or the like has a problem that the wood is discolored. (3) Although the adhesion is improved, the cost is increased and the texture of the wood is deteriorated. (4) Although the adhesion is improved, there is a problem that the equipment is increased and the cost is increased because the whole wood is treated.
【０００６】本発明は、このような事情に鑑みてなされ
たものであって、長期に亙る屋外での使用においても、
変色を起こすことなく、木材と塗膜との間の高い密着性
を維持でき、かつコストを安価に抑さえることのできる
木材の表面処理法を提供することを目的としている。The present invention has been made in view of such circumstances, and even when it is used outdoors for a long period of time,
An object of the present invention is to provide a surface treatment method for wood, which can maintain high adhesion between wood and a coating film without causing discoloration and can suppress costs at low cost.
【０００７】[0007]
【課題を解決するための手段】かかる目的を達成するた
めに、本発明で、木材の表面に水性アルコキシシラン系
吸水防止剤を固形分で５〜３０ｇ／ｍ2塗布した後、屋
外用樹脂塗料を塗布するようにした。In order to achieve the above object, according to the present invention, an aqueous alkoxysilane-based water absorption inhibitor is applied to the surface of wood at a solid content of 5 to 30 g / m 2 and then an outdoor resin coating is applied. Was applied.
【０００８】[0008]
【作用】本発明の木材の表面処理法によれば、屋外用樹
脂塗料の塗布に先だって、前処理として、水性アルコキ
シシラン系吸水防止剤を塗布するので、長期に亙る屋外
の使用によっても、木材の吸水を抑さえ、木材表面と塗
料塗膜との間の密着性の低下を抑止することができる。
したがって、長期間に亙って、塗料塗膜の剥離等の損傷
を防ぎ、木材の耐候性を維持することができる。According to the wood surface treatment method of the present invention, the water-based alkoxysilane-based water absorption inhibitor is applied as a pretreatment prior to the application of the outdoor resin paint, so that the wood can be used even for a long period of outdoor use. It is possible to suppress the absorption of water, and to prevent a decrease in adhesion between the wood surface and the paint film.
Therefore, over a long period of time, damage such as peeling of the paint film can be prevented and the weather resistance of the wood can be maintained.
【０００９】[0009]
【実施例】以下、本発明の木材の表面処理法について、
工程順に説明する。EXAMPLES The following is a description of the wood surface treatment method of the present invention.
The steps will be described in order.
【００１０】素材となる木材には、天然ムク材、合板、
パーティクルボード、化粧単板等が用いられる。この木
材は、含水率が６〜１５％程度であることが好ましく、
これより含水率が大きい場合には、予め自然乾燥あるい
は人工乾燥によって含水率を前記範囲に調整しておくこ
とが望ましい。The wood used as the raw material includes natural wood, plywood,
Particleboard, decorative veneer, etc. are used. This wood preferably has a water content of about 6 to 15%,
When the water content is higher than this, it is desirable to adjust the water content to the above range by natural drying or artificial drying in advance.
【００１１】まず、この木材の表面を研削処理する。研
削処理は、＃１８０〜＃３２０程度のサンドペーパーや
サンドブラスト、あるいは表面研削機などを用いて行
う。First, the surface of the wood is ground. The grinding process is performed using sandpaper or sandblast of about # 180 to # 320, or a surface grinder.
【００１２】次に、木材表面に、水性アルコキシシラン
系吸水防止剤を塗布する。水性アルコキシシラン系吸水
防止剤には、具体的には、モノメトキシシラン、トリメ
トキシシラン、モノエトキシシラン、トリエトキシシラ
ン等のアルコキシシランを適当な溶剤に５〜４０重量％
程度の濃度になるように溶解させたものが用いられる。
この水性アルコキシシラン系吸水防止剤の塗布量は、固
形分で５〜３０ｇ／ｍ2とする。これは、塗布量が前記
範囲に満たないと吸水防止の効果が十分得られず、また
塗布量がこの範囲をこえると初期密着性の低下が認めら
れるからである。この水性アルコキシシラン系吸水防止
剤の塗布方法としては、スプレー法、刷毛塗り法、スピ
ンコータ法などがあるが、なかでもスプレーガンを用い
たスプレー法が好適に採用される。Next, a water-based alkoxysilane-based water absorption inhibitor is applied to the wood surface. As the water-based alkoxysilane-based water absorption inhibitor, specifically, alkoxysilane such as monomethoxysilane, trimethoxysilane, monoethoxysilane, and triethoxysilane is added in an appropriate solvent in an amount of 5 to 40% by weight.
What was melt | dissolved so that it might become a density | concentration is used.
The coating amount of this water-based alkoxysilane-based water absorption inhibitor is 5 to 30 g / m 2 in terms of solid content. This is because if the coating amount is less than the above range, the effect of preventing water absorption cannot be sufficiently obtained, and if the coating amount exceeds this range, a decrease in initial adhesion is observed. As a method for applying the water-based alkoxysilane-based water absorption inhibitor, there are a spray method, a brush coating method, a spin coater method and the like. Among them, a spray method using a spray gun is preferably adopted.
【００１３】次いで、下塗りを行う。下塗りの塗料に
は、アクリルウレタン系、エポキシ系、アクリルシリコ
ーン系、フッ素樹脂系のものなどが用いられ、乾燥膜厚
で約１０μｍ程度となるように塗布する。下塗りの方法
には、スプレー法、刷毛塗り法、スピンコータ法などが
採用される。Next, an undercoat is applied. Acrylic urethane type, epoxy type, acrylic silicone type, fluororesin type, etc. are used as the undercoat paint, and the undercoating paint is applied so as to have a dry film thickness of about 10 μm. As a method of undercoating, a spray method, a brush coating method, a spin coater method or the like is adopted.
【００１４】下塗り塗膜の表面を研削処理する。研削処
理は、サンドペーパーやサンドブラストなどを利用して
行う。The surface of the undercoat coating film is ground. The grinding process is performed using sandpaper, sandblast, or the like.
【００１５】続いて、中塗りを行う。中塗りの塗料に
は、下塗りの塗料と同様に、アクリルウレタン系、エポ
キシ系、アクリルシリコーン系、フッ素樹脂系のものな
どが用いられる。この中塗り塗膜の膜厚は、乾燥膜厚で
２０〜３０μｍ程度とする。Subsequently, intermediate coating is performed. As the undercoat paint, acrylic urethane-based, epoxy-based, acrylic silicone-based, fluororesin-based paints, etc. are used as in the undercoat paint. The film thickness of this intermediate coating film is about 20 to 30 μm as a dry film thickness.
【００１６】中塗り塗膜の表面を研削処理する。The surface of the intermediate coating film is ground.
【００１７】次に、上塗りを行う。上塗りには、屋外用
樹脂塗料を用いる。この屋外用樹脂塗料には、木材の使
用用途等に応じて、透明のものでも不透明のものでも使
用可能であり、具体的には、アクリルウレタン系、エポ
キシ系、アクリルシリコーン系、フッ素樹脂系のものが
用いられる。この塗料中には、必要に応じて適宜の充填
剤、着色剤、紫外線防止剤等の添加剤が添加されてよ
い。この上塗り塗膜の膜厚は、乾燥膜厚で２０〜３０μ
ｍ程度とする。Next, a top coat is applied. An outdoor resin paint is used for the top coat. This outdoor resin coating may be transparent or opaque depending on the intended use of the wood. Specifically, acrylic urethane-based, epoxy-based, acrylic silicone-based, and fluororesin-based resin coatings may be used. Things are used. If necessary, suitable additives such as a filler, a colorant, and an ultraviolet protective agent may be added to this coating material. The film thickness of this top coating film is 20 to 30 μm as a dry film thickness.
It is about m.
【００１８】以上のように処理された木材にあっては、
屋外用樹脂塗料の塗布に先だって、前処理として、水性
アルコキシシラン系吸水防止剤を塗布しているので、長
期に亙る屋外の使用によっても、木材の吸水を抑さえ、
木材表面と塗料塗膜との間の密着性の低下を抑止するこ
とができる。したがって、長期に亙って、塗料塗膜の剥
離等の損傷を防ぎ、木材の耐候性を維持することができ
る。In the wood treated as described above,
Prior to applying the outdoor resin coating, a water-based alkoxysilane-based water absorption inhibitor is applied as a pretreatment, so even if it is used outdoors for a long period of time, the water absorption of wood can be suppressed.
It is possible to prevent a decrease in adhesion between the wood surface and the paint film. Therefore, over a long period of time, damage such as peeling of the paint film can be prevented and the weather resistance of the wood can be maintained.
【００１９】なお、本発明は前記実施例に限定されるも
のではなく、水性アルコキシシラン系吸水防止剤や、下
塗り、中塗り、屋外用樹脂塗料の種類、またその塗布方
法、研削方法などの具体的構成要件は、実施に当り適宜
変更可能である。The present invention is not limited to the above-mentioned examples, and specific examples of the water-based alkoxysilane water-absorption inhibitor, the undercoat, the intermediate coating, the type of the outdoor resin coating, the coating method, the grinding method, etc. The constituent elements can be appropriately changed in the implementation.
【００２０】次に、具体的な実施例を示して、本発明の
効果を明らかにする。 （実施例１）木材表面を研削処理した後、前処理とし
て、水性アルコキシシラン系吸水防止剤（トリメトキシ
シラン）を固形分で２０ｇ／ｍ2、スプレーガンにより
塗布した。その後、アクリル系樹脂による下塗り（乾燥
膜厚１０μｍ）、研削、中塗り（乾燥膜厚３０μｍ）、
研削を行い、さらにその上にアクリル系樹脂からなる屋
外用樹脂塗料を乾燥膜厚１００μｍとなるように塗布し
た。Next, the effects of the present invention will be clarified by showing concrete examples. (Example 1) After the wood surface was ground, as a pretreatment, an aqueous alkoxysilane-based water absorption inhibitor (trimethoxysilane) at a solid content of 20 g / m 2 was applied by a spray gun. After that, undercoating with an acrylic resin (dry film thickness 10 μm), grinding, intermediate coating (dry film thickness 30 μm),
Grinding was performed, and then an outdoor resin paint made of an acrylic resin was applied thereon so that the dry film thickness was 100 μm.
【００２１】（比較例１）水性アルコキシシラン系吸水
防止剤による前処理を省略した以外は、前記実施例１と
同様にして、木材の表面処理を行った。(Comparative Example 1) A surface treatment of wood was carried out in the same manner as in Example 1 except that the pretreatment with an aqueous alkoxysilane-based water absorption inhibitor was omitted.
【００２２】（比較例２）前処理として、ＣｒＯ3処理
を施した以外は、実施例１と同様にして、木材の表面処
理を行った。(Comparative Example 2) As a pretreatment, the surface treatment of wood was performed in the same manner as in Example 1 except that the CrO 3 treatment was applied.
【００２３】実施例（１例）および比較例（２例）の木
材の塗膜残存率および変色を測定し、それぞれの経時変
化を図１および図２に示した。The coating film residual rate and discoloration of the woods of the example (1 example) and the comparative example (2 examples) were measured, and the changes over time are shown in FIGS. 1 and 2.
【００２４】図１より、水性アルコキシシラン系吸水防
止剤による前処理を行った実施例において、長期（３
年）に亙って高い塗膜残存率が維持されることが明らか
となった。これに比べ、前処理を行わなかった比較例１
では、１年後過ぎから急激に塗膜残存率が低下し、２年
後にはほとんど塗膜が残っていない状況であった。From FIG. 1, it can be seen that, in an example in which pretreatment with an aqueous alkoxysilane-based water absorption inhibitor was performed,
It has become clear that a high coating film residual rate is maintained over the years. In comparison with this, Comparative Example 1 in which pretreatment was not performed
Then, the coating film residual rate decreased sharply after one year and almost no coating film remained after two years.
【００２５】図２より、水性アルコキシシラン系吸水防
止剤による前処理を行った実施例において、長期に亙っ
て変色が少ないことが明らかとなった。これに比べ、Ｃ
ｒＯ3による前処理を行った比較例２では、使用直後か
ら顕著な変色が認められた。From FIG. 2, it has been clarified that, in the example in which the pretreatment with the aqueous alkoxysilane-based water absorption inhibitor was carried out, the discoloration was small over a long period. Compared with this, C
In Comparative Example 2 in which the pretreatment with rO 3 was performed, a remarkable discoloration was observed immediately after use.
【００２６】[0026]
【発明の効果】以上説明したように、本発明の木材の表
面処理法によれば、長期に亙る屋外での使用によって
も、木材表面と塗料塗膜との間の密着性を維持して、高
い耐候性を確保することができる。As described above, according to the method for surface treatment of wood of the present invention, the adhesion between the wood surface and the paint film can be maintained even when used outdoors for a long period of time. High weather resistance can be ensured.
【図１】 表面処理後の木材の塗膜残存率の経時変化を
示すグラフである。FIG. 1 is a graph showing changes over time in the coating film residual rate of wood after surface treatment.
【図２】 表面処理後の木材の変色の経時変化を示すグ
ラフである。FIG. 2 is a graph showing the change over time in the discoloration of wood after surface treatment.
Claims (1)
水防止剤を固形分で５〜３０ｇ／ｍ2塗布した後、屋外
用樹脂塗料を塗布することを特徴とする木材の表面処理
法。1. A method for surface treatment of wood, which comprises applying an aqueous alkoxysilane-based water absorption inhibitor on the surface of wood at a solid content of 5 to 30 g / m 2 and then applying a resin coating for outdoor use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05304440A JP3119774B2 (en) | 1993-12-03 | 1993-12-03 | Wood surface treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05304440A JP3119774B2 (en) | 1993-12-03 | 1993-12-03 | Wood surface treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07156112A true JPH07156112A (en) | 1995-06-20 |
| JP3119774B2 JP3119774B2 (en) | 2000-12-25 |
Family
ID=17933040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05304440A Expired - Fee Related JP3119774B2 (en) | 1993-12-03 | 1993-12-03 | Wood surface treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3119774B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297621C (en) * | 2002-02-21 | 2007-01-31 | 住友林业株式会社 | Method for producing modified wood materials |
| CN116214657A (en) * | 2023-02-20 | 2023-06-06 | 浙江优尼家装饰科技有限公司 | Treatment method for weather resistance of wood surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56500407A (en) * | 1979-04-24 | 1981-04-02 | ||
| JPS6345001A (en) * | 1986-08-12 | 1988-02-26 | 三洋化成工業株式会社 | Treating agent for wood |
| JPH04142901A (en) * | 1990-10-04 | 1992-05-15 | Shin Etsu Chem Co Ltd | Modified wooden material |
| JPH04259504A (en) * | 1991-02-13 | 1992-09-16 | Matsushita Electric Works Ltd | Manufacture of modified wood |
-
1993
- 1993-12-03 JP JP05304440A patent/JP3119774B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56500407A (en) * | 1979-04-24 | 1981-04-02 | ||
| JPS6345001A (en) * | 1986-08-12 | 1988-02-26 | 三洋化成工業株式会社 | Treating agent for wood |
| JPH04142901A (en) * | 1990-10-04 | 1992-05-15 | Shin Etsu Chem Co Ltd | Modified wooden material |
| JPH04259504A (en) * | 1991-02-13 | 1992-09-16 | Matsushita Electric Works Ltd | Manufacture of modified wood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297621C (en) * | 2002-02-21 | 2007-01-31 | 住友林业株式会社 | Method for producing modified wood materials |
| CN116214657A (en) * | 2023-02-20 | 2023-06-06 | 浙江优尼家装饰科技有限公司 | Treatment method for weather resistance of wood surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3119774B2 (en) | 2000-12-25 |
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