JPS63109002A - Improved woody material - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔技術分野〕 この発明は、木材−プラスチック複合体を得るためのＷ
　Ｐ　Ｃ（Ｗｏｏｄ　Ｐｌａｓｔｉｃ　Ｃｏｍｂｉｎａ
ｔｉｏｎまたはＷｏｏｄ　Ｐｌａｓｔｉｃ　ＣｏＩ＠ｐ
ｏｓｉｔｅの略）加工を利用した改質木質材料に関する
ものである。[Detailed Description of the Invention] [Technical Field] The present invention relates to a method for obtaining a wood-plastic composite.
PC (Wood Plastic Combina)
tion or Wood Plastic CoI@p
This relates to a modified wood material that utilizes processing (abbreviation for osite).

〔背景技術〕[Background technology]

従来より、木質材料の表面性能の改良、すなわち、美装
、耐汚染性、耐候性、耐防腐性などを目的として、各種
の水性塗料、油性塗料、繊維素塗料、天然手封脂塗料、
合成樹脂塗料、うるし塗料などを木質材料の表面に塗装
する処理が行なわれている。Traditionally, various water-based paints, oil-based paints, cellulose paints, natural hand-sealing paints,
The surface of wood materials is treated with synthetic resin paint, lacquer paint, etc.

一方、木質材料に合成樹脂の七ツマ−または初期重合物
、あるいはこれらにポリエステル樹脂等を組み合せた重
合性樹脂を含浸させ、木材中で重合硬化させて得られる
木材−プラスチック複合体は通常の木質材料に比べて耐
摩耗性、耐水性、耐候性、強度、寸法安定性等が優れる
ために、これらの性能付与を目的として樹脂含浸処理が
行なわれている。On the other hand, a wood-plastic composite obtained by impregnating a wooden material with a synthetic resin, an initial polymer, or a polymeric resin obtained by combining these with polyester resin, etc., and polymerizing and curing it in the wood is made of ordinary wood. Since it has superior abrasion resistance, water resistance, weather resistance, strength, dimensional stability, etc. compared to other materials, resin impregnation treatment is performed for the purpose of imparting these properties.

ｉ！！ｌ常の木質材料への塗装は、塗料の木質材料への
ｉ着性能が大きな問題点となり、これを改善するために
、木理、木目等を検査する素地調査あるいは研磨などに
よる素地調整を経て、捨て塗り、研磨、目止め、研磨、
下塗り、ＶＦｇ、中塗り、研磨、上塗り、（研磨）、麿
きなどの塗装と研磨を組み合せた複雑な工程を経て行な
われている。しかし、木質材料素地が改良された形とな
っていないために、特に水分の影響下にある場合は、そ
の水分によって木質材料が寸法変化などの変形を生じ、
木質材料素地と塗膜の界面に変形による歪が発生し、塗
膜の密着性は水分の影響度に比例して劣化する。i! ! When painting wood-based materials, a major problem is the adhesion of the paint to the wood-based material. , disposable coating, polishing, sealing, polishing,
It is done through a complex process that combines painting and polishing, such as undercoating, VFg, intermediate coating, polishing, topcoating, polishing, and polishing. However, because the wood material base is not in an improved shape, especially when it is under the influence of moisture, the moisture may cause deformation of the wood material such as dimensional changes.
Strain occurs due to deformation at the interface between the wood material base and the paint film, and the adhesion of the paint film deteriorates in proportion to the degree of influence of moisture.

これらの改善のために、上記の木材−プラスチック複合
体と組み合せ、これによって木質材料素地を変形の少な
い形にして、塗膜の密着性を上げることが行なわれてい
る。In order to improve these, it is being combined with the above-mentioned wood-plastic composite to make the wood material substrate into a shape with less deformation and improve the adhesion of the coating film.

しかし、重合性樹脂と重合開始剤を予め減圧または加圧
等の操作方法によって木材中に含浸し、加熱して重合硬
化させる従来の木材−プラスチック複合体では、その重
合硬化によって重合性樹脂の硬化に伴なう硬化収縮が発
生し、木材中に注入された硬化樹脂体と木材組織との間
に隙間が生じる。このため、水分がこの隙間内に浸入し
、その部分が白く見える現象（白化）が生じ、また寸法
変化（それに伴なう歪による塗膜の劣化）も出て来るか
ら耐水性が劣化する。このような素地との組み合せでは
、たとえ塗装によって表面性能を改良しても、これらの
影響から特に水分影響下の高い部分では塗膜密着性の大
巾な改良は望めなかった。However, in conventional wood-plastic composites in which a polymerizable resin and a polymerization initiator are impregnated into wood in advance by operating methods such as reduced pressure or pressurization, and then polymerized and cured by heating, the polymerizable resin is cured by the polymerization and curing. As a result, curing shrinkage occurs, and a gap is created between the cured resin body injected into the wood and the wood structure. As a result, water enters into these gaps, causing the area to appear white (whitening), and dimensional changes (deterioration of the coating film due to accompanying distortion) to occur, resulting in deterioration of water resistance. In combination with such a substrate, even if the surface performance was improved by painting, it was not possible to expect a significant improvement in the adhesion of the paint film due to these effects, especially in areas that are highly affected by moisture.

また、加熱による重合硬化には均一な一定時間の加熱操
作が必要であり、材料の厚さ、重合開始剤の量などの一
定条件を保持しなければ完全硬化に至らない、この時、
未反応の重合性樹脂が特に単量体の形で残存した場合、
得られる木材−プラスチック複合体は未反応物の浸出や
塗膜への浸入によって著しく塗膜性能を劣化させる問題
も生じる。このように、耐水性、耐候性を主たる目的と
して使用する部分では、現状の組み合せでは問題があり
、高耐久性の改質木質材料が切望されている。In addition, polymerization curing by heating requires a uniform heating operation for a certain period of time, and complete curing cannot be achieved unless certain conditions such as the thickness of the material and the amount of polymerization initiator are maintained.
If unreacted polymeric resin remains, especially in the form of monomers,
The resulting wood-plastic composite also has the problem of significantly deteriorating coating film performance due to unreacted substances leaching out or penetrating into the coating film. As described above, in parts where water resistance and weather resistance are the main objectives, there are problems with the current combinations, and highly durable modified wood materials are desperately needed.

更に、これら木材−プラスチック複合体は通常１２０％
以上の含浸率（（ｆｆ１合性…脂ｉ！［１／木材重１）
Ｘ１００）になり、非常に硬度が高く、プラスチック感
の強いものとなり、木質材料本来の木質感（木肌、暖か
味、やわらか味、風合い等）が消失した形となる。Furthermore, these wood-plastic composites are typically 120%
or more impregnation rate ((ff1 combination... fat i! [1/wood weight 1)
X100), it has extremely high hardness and a strong plastic feel, and the original wood texture (wood skin, warmth, soft taste, texture, etc.) of the wood material has disappeared.

〔発明の目的〕[Purpose of the invention]

この発明の目的は、木質材料が本来有する木質感（大味
、風合い等）を損なうことなく、耐汚染性、耐薬品性、
耐候性、耐水性などの木質材料表面の性能の高耐久化を
図った改質木質材料を提供することである。The purpose of this invention is to provide stain resistance, chemical resistance, and
An object of the present invention is to provide a modified wood material that has improved surface performance such as weather resistance and water resistance.

〔発明の開示〕[Disclosure of the invention]

この発明の改質木質材料は、溶剤可溶型の親水性ポリマ
ーをその溶剤と共に含浸し乾燥させてなる木質材料に高
耐候性塗料を塗布してなるものである。The modified wood material of this invention is made by coating a highly weather resistant paint on a wood material impregnated with a solvent-soluble hydrophilic polymer and dried.

この発明によれば、親水性ポリマーを含浸させた木質材
料の高耐久性（寸法安定性、耐吸水性）と、この木質材
料の表面に塗布した高耐候性塗料の有する高耐候性、耐
汚染性、耐薬品性などの性情とが総合的に付与、合致さ
れた形となり、木質感を残したままで耐久性にきわめて
すぐれたものになる。According to this invention, the high durability (dimensional stability, water absorption resistance) of a wood material impregnated with a hydrophilic polymer, and the high weather resistance and stain resistance of a highly weather resistant paint applied to the surface of this wood material. The result is a shape that is comprehensively given and matched to properties such as hardness and chemical resistance, resulting in an extremely durable product that retains its woody feel.

従って、この発明の木質材料は通常の壁材、床材、天井
材等としての用途はもちろん、耐水性。Therefore, the wood material of this invention can be used not only as ordinary wall materials, floor materials, ceiling materials, etc., but also has water resistance.

耐腐朽性が要求される浴室の壁、天井、窓枠、換気口等
の施工部材や浴槽にも好適に保用することができる。It can be suitably maintained in bathroom walls, ceilings, window frames, ventilation openings, and other construction parts that require rot resistance, as well as bathtubs.

木質材料としては、住宅等の建築材料として従来より広
く使用されている松、杉、桧、ツガ、ヒバなどの針葉樹
、あるいはナラ、ブナ、クモ、シオジなどの広葉樹の無
垢材、合板、集成材である。Wood materials include softwood such as pine, cedar, cypress, hemlock, and hiba, which have been widely used as building materials for houses, and solid wood, plywood, and laminated wood such as oak, beech, spider, and shioji. It is.

また、これらの木質材料に含浸する親水性ポリマーとし
ては、たとえばポリアクリル酸エステル、ポリメタクリ
ル酸エステル、ポリアクリル酸アミド、ポリメタクリル
酸アミド、ポリビニルアルコール、ポリ酢酸ビニル、ポ
リアクリル酸ポリウレタン、ポリエチレンイミン、セル
ロース３１４体、などであって、その分子構造内に、：
ｃ＝ｏ　（カルボニル基）　、−ＯＨ（水酸基）　、−
ＣＯ−ＮＨ−（アミド基）　、−ＣＯＯＨ（カルボキシ
ル基）、【 −Ｎ−（アミノ基、イミノ基、ニトリロ基）、−Ｏ−（
エーテル基）などの極性基を有したものがあげられ、こ
れらを単独あるいは２種以上の混合物、あるいはこれら
の共重合体または他のモノマーやオリゴマー、プレポリ
マー、ポリマーとの共重合体である。また、平均分子量
は含浸性から５万以下であることが望ましい、それぞれ
の親水性ポリマーと相溶性の良い溶剤とその溶媒として
選定し単独あるいは混合溶媒として溶解する。Hydrophilic polymers that can be impregnated into these wood materials include, for example, polyacrylic acid ester, polymethacrylic acid ester, polyacrylic acid amide, polymethacrylic acid amide, polyvinyl alcohol, polyvinyl acetate, polyacrylic acid polyurethane, and polyethylene imine. , cellulose 314 bodies, etc., whose molecular structure includes:
c=o (carbonyl group), -OH (hydroxyl group), -
CO-NH- (amide group), -COOH (carboxyl group), [ -N- (amino group, imino group, nitrilo group), -O-(
Examples include those having a polar group such as ether group), and these may be used alone or in mixtures of two or more, or copolymers thereof, or copolymers with other monomers, oligomers, prepolymers, and polymers. In addition, it is desirable that the average molecular weight is 50,000 or less from the viewpoint of impregnating properties.Select a solvent that has good compatibility with each hydrophilic polymer and dissolve it alone or as a mixed solvent.

溶剤としては、たとえば、メタノール、ｎ−ブチルアル
コールなどのアルコール類、酢酸エチル、酢酸ｎ−ブチ
ル、乳酸エチルなどのエステル類、ジオキサンなどのエ
ーテル類、トルエン、キシレンなどの炭化水素類あるい
はアセトン、メチルエチルケトンなどのケトン類などで
ある。希釈濃度は含浸性、作業性などから５０％以下が
好ましい。Examples of solvents include alcohols such as methanol and n-butyl alcohol, esters such as ethyl acetate, n-butyl acetate, and ethyl lactate, ethers such as dioxane, hydrocarbons such as toluene and xylene, or acetone and methyl ethyl ketone. and other ketones. The dilution concentration is preferably 50% or less from the viewpoint of impregnating properties and workability.

また、必要に応して着色剤、Ｎ然剤、防黴剤などの添加
物を添加してもよい、この溶解した親木性ポリマー溶液
を木質材料に含浸する。Furthermore, the dissolved wood-philic polymer solution, to which additives such as colorants, natural additives, and fungicides may be added as necessary, is impregnated into the wood material.

含浸方法としては、常圧下でポリマー溶液内に木質材料
を浸漬する常圧浸漬法の他、減圧下で木質材料をポリマ
ー溶液に浸漬し、ついで常圧または加圧下で浸漬する減
圧常圧法または減圧加圧法などがいずれも採用可能であ
り、目的とする含浸度合いあるいは木質材料の種類など
により適宜選択する。常圧含浸法の場合、ポリマー溶液
内に木質材料を数時間以上浸漬する必要がある。また減
圧下での浸漬は木質材料を減圧釜に入れて減圧（たとえ
ば１０トール以下で１時間以上排気）を行なったのち、
釜内にポリマー溶液を注入して行なう、樹脂液の注入後
、釜内を常圧にもどし、そのまま数時間以上浸漬を続行
するか、あるいは加圧して浸漬を行なう、また、含浸操
作にあたっては、木質材料をあらかじめよく乾燥（平衡
含水率以下）させておくことが好ましい。Impregnation methods include the normal pressure immersion method, in which the wood material is immersed in the polymer solution under normal pressure, and the reduced pressure normal pressure method or reduced pressure, in which the wood material is immersed in the polymer solution under reduced pressure, and then immersed under normal pressure or increased pressure. Any method such as a pressurization method can be adopted, and the method is appropriately selected depending on the desired degree of impregnation or the type of wood material. In the case of the atmospheric pressure impregnation method, it is necessary to immerse the wood material in the polymer solution for several hours or more. In addition, for soaking under reduced pressure, the wood material is placed in a vacuum pot and the pressure is reduced (e.g., evacuated at 10 torr or less for more than 1 hour).
The polymer solution is injected into the pot. After the resin solution is injected, the pressure inside the pot is returned to normal pressure, and the immersion is continued for several hours or more, or the immersion is carried out under pressure. Also, during the impregnation operation, It is preferable to thoroughly dry the wood material (below the equilibrium moisture content) in advance.

親水性ポリマーの含浸量は、これによって木質材料の硬
度が決定されるために重要であり、目的とする最適の硬
度が得られるように含浸量を定める必要がある。この場
合、親水性合成樹脂ポリマーを含浸した木質材料に末法
や木の風合いを残す為には、硬度をバーコール硬度で４
０以下に保持することが必要となる。すなわち、木質材
料が本来有する木質感（末法、風合い、素材感）が消失
してしまった従来の木材−プラスチック複合材の硬度が
５０〜９０であるのに対して、この硬度を４０以下に保
持できれば、木質材料が本来有する木質感は損なわれず
、また合成樹脂ポリマーを含浸させているために、反り
、ねじれがなく、割れに＜＜、汚れが付きに＜＜、耐水
性が向上し腐りにくいなど、木質材料の欠点を排除でき
る。また、親水性合成ｔＭ脂ポリマー自体の性質あるい
は木質材料の種類にもよるが、含浸率としては、５〜５
０％が適当であり、この範囲であればバーコール硬度を
４０以下に保持できる。The amount of hydrophilic polymer impregnated is important because it determines the hardness of the wood material, and it is necessary to determine the amount of impregnation so that the desired optimum hardness can be obtained. In this case, in order to retain the finish and wood texture of the wood material impregnated with the hydrophilic synthetic resin polymer, the hardness must be set to 4 on the Barcoll scale.
It is necessary to keep it below 0. In other words, while the hardness of conventional wood-plastic composite materials, which have lost the wood feel (finishing, texture, texture) inherent in wood materials, is 50 to 90, this hardness is maintained at 40 or less. If possible, the original wood feel of the wood material will not be impaired, and since it is impregnated with a synthetic resin polymer, it will not warp or twist, and will be resistant to cracks, stains, water resistance, and rot resistance. This eliminates the drawbacks of wood materials. In addition, depending on the properties of the hydrophilic synthetic tM fat polymer itself or the type of wood material, the impregnation rate is 5 to 5.
0% is appropriate, and within this range, Barcol hardness can be maintained at 40 or less.

含浸操作を終えた後、溶媒を揮発又は蒸発させ親水性合
成樹脂ポリマーを固化させる。揮発または蒸発方法とし
ては、風乾法、温風や熱風の雰囲気で行なう強制乾燥法
、減圧下で行なう減圧乾燥法、またはこれらを組み合せ
たものなどがあるが、親水性合成樹脂ポリマーが溶媒と
共に溶出しない様に徐々に揮発または蒸発させることが
好ましい。After the impregnation operation is completed, the solvent is volatilized or evaporated to solidify the hydrophilic synthetic resin polymer. Volatilization or evaporation methods include air drying, forced drying in a warm air or hot air atmosphere, vacuum drying under reduced pressure, or a combination of these methods, but the hydrophilic synthetic resin polymer is eluted together with the solvent. It is preferable to gradually volatilize or evaporate to prevent

この様にして得られた木材−プラスチック複合化による
改質木質材料は、親水性ポリマーの有する極性基により
木材組織との高い親和性（具体的にはセルロースの一〇
Ｈ基との結合）が得られ、固化に伴なう収縮での親木性
ポリマーと木材組織との隙間の発生は全く見られない、
したがって従来の白化現象は生じなくなる。また、木材
中に注入された親水性合成樹脂ポリマーは、木材組織内
の導管あるいは仮導管の壁面部をコーティングし、各種
の壁孔（ピント）をふさいだ形を形成している為に寸法
変化に寄与する。木材１）１胞壁への水分の浸入は防止
され、寸法安定性は非常に良い値を示す、一方、親水性
ポリマー溶液に直接触れた改質木材の表面、側面、裏面
、木口部の各表層部はその内部より高い含浸率となるた
め、それらの部分からの水の浸入は阻止される結果、吸
水性能は高く、吸水率は低い値を示す、従って、通常の
重合性樹脂を注入、硬化してなる木材−プラスチッり複
合体に比べ、寸法安定性で約２倍、吸水性で１．５〜２
．０倍の効果がある。The modified wood material obtained through the wood-plastic composite obtained in this way has a high affinity with wood tissue (specifically, bonding with the 10H group of cellulose) due to the polar groups of the hydrophilic polymer. As a result, no gaps are observed between the wood-philic polymer and the wood structure due to shrinkage during solidification.
Therefore, the conventional whitening phenomenon does not occur. In addition, the hydrophilic synthetic resin polymer injected into the wood coats the walls of the conduits or tracheids in the wood tissue, forming a shape that blocks various wall holes (pinto), resulting in dimensional changes. Contribute to Wood 1) 1 Moisture infiltration into the cell wall is prevented and the dimensional stability shows very good values.On the other hand, the surface, side, back, and end of the modified wood that came into direct contact with the hydrophilic polymer solution Since the surface layer has a higher impregnation rate than the interior, water intrusion from those areas is prevented, resulting in high water absorption performance and low water absorption rate. Therefore, when injecting ordinary polymeric resin, Compared to a hardened wood-plastic composite, it has approximately twice the dimensional stability and 1.5 to 2 times more water absorption.
．． It is 0 times more effective.

さらに５〜５０％の含浸率であるから、改質木質材料の
切削加工性は良好で、従来の木質材料と同様の加工性が
ある。また、従来の重合硬化体タイプで問題となる残存
モノマーの悪臭や浸出の心配はポリマータイプのために
全くない。Furthermore, since the impregnation rate is 5 to 50%, the cutting workability of the modified wood material is good, and the workability is similar to that of conventional wood materials. Furthermore, since it is a polymer type, there is no concern about the odor or leaching of residual monomers, which is a problem with conventional polymer cured product types.

このようにして処理されて得られた木材−プラスチック
複合体である木質材料の表面にフッ素樹脂系塗料あるい
はアクリル系塗料、ウレタン系、シリコーン系、セラミ
ック系塗料などの高耐候性塗料をコーティングする。目
的とする木質感を保持するためには、塗布量はできるだ
け低いほうがよいが、耐汚染性、耐候性など性能の面か
ら４０μ以下、なかんづく２０〜３０μの膜厚が好まし
い、また、出来れば、高耐候性塗料はつや消しタイプが
好ましく、とりわけ７分つや以下のつや消しタイプのも
のが望ましい。The surface of the wood material, which is a wood-plastic composite thus obtained, is coated with a highly weather-resistant paint such as a fluororesin paint, an acrylic paint, a urethane paint, a silicone paint, or a ceramic paint. In order to maintain the desired wood texture, the amount of coating should be as low as possible, but from the viewpoint of performance such as stain resistance and weather resistance, a film thickness of 40 μ or less, especially 20 to 30 μ, is preferable, and if possible, The highly weather-resistant paint is preferably a matte type, and particularly a matte type with a gloss level of 7 minutes or less is particularly desirable.

高耐候性塗料は、木材−プラスチック複合体の表面に研
磨処理後あるいは直接にスプレーガン、ロールコータ、
フローコーターなどの塗装機器あるいははけ塗りなどに
よって塗布する。場合によっては下塗り、中塗り、上塗
りなどのように、研磨との組み合せで多層に塗布するこ
ともあるが通常は１〜２回の塗布で十分である。塗装後
は塗料の性質あるいは環境の度合いにより常温放置、加
温、乾燥などの操作によって塗膜を形成させる。Highly weather-resistant paints can be applied to the surface of wood-plastic composites after polishing or directly using spray guns, roll coaters, etc.
Apply using painting equipment such as a flow coater or by brushing. In some cases, multiple layers may be applied in combination with polishing, such as undercoat, intermediate coat, top coat, etc., but usually one or two coats is sufficient. After painting, a coating film is formed by leaving it at room temperature, heating, drying, etc. depending on the properties of the paint or the level of the environment.

目的とする木質感を保持するためには、出来れば常温硬
化タイプもしくは５０℃以下の低温硬化タイプでそれ以
上の加熱を必要としないものの方が好ましい、また、塗
膜の硬度も低い方が良く、具体的には鉛ＩＥ＋！度で６
Ｈ以下のものが好ましく、その様な性能を付与、調整さ
れた高耐候性塗料を使用するのが望ましい。In order to maintain the desired wood texture, it is preferable to use a room-temperature curing type or a low-temperature curing type below 50°C that does not require further heating, and the lower the hardness of the coating, the better. , specifically lead IE+! 6 degrees
H or less is preferable, and it is desirable to use a highly weather resistant paint that has been imparted and adjusted with such performance.

このようにして得られた改質木質材料は、木質材料の高
耐水性と表面塗装の高耐候性、耐汚染性、耐薬品性など
の性能が総合的に付与、合致された形となり高耐久性材
料となる。The modified wood material obtained in this way has a comprehensive combination of properties such as the high water resistance of the wood material and the high weather resistance, stain resistance, and chemical resistance of the surface coating, and is highly durable. It becomes a sexual material.

次に実施例をあげてこの発明の改質木質材料を説明する
。Next, the modified wood material of the present invention will be explained with reference to Examples.

実施例１；木質材料（米松柾目板、厚み×巾×長さ一３
０ｘ３０ｘ６０　（鶴）、含水率１４．０％）を減圧含
浸釜内に入れ、釜内を１０トール以下に排気減圧したの
ち、ポリウレタン樹脂、（平均分子１）７．５００）の
メチルエチルケトン溶液（ポリウレタン樹脂濃度４０．
０％）を注入した。ついで、釜内を常圧にもどし、浸漬
した状態を保ちながら、１８時間浸漬を行なった。その
後、含浸釜より木質材料を取り出し、６５℃の温風乾燥
機内に５５時間保持して、溶媒（メチルエチルケトン）
を揮発させた。その結果、樹脂含浸率は４０．２〜４４
．４％で、バーコール硬度は３３．０であった。Example 1; Wooden material (Japanese pine straight grain board, thickness x width x length 13
0x30x60 (Tsuru), water content 14.0%) was placed in a vacuum impregnation pot, the pressure inside the pot was evacuated to 10 torr or less, and then a methyl ethyl ketone solution (polyurethane resin Concentration 40.
0%) was injected. Then, the pressure inside the pot was returned to normal pressure, and immersion was carried out for 18 hours while maintaining the immersion state. After that, the wood material was taken out from the impregnation pot and kept in a hot air dryer at 65°C for 55 hours to remove the solvent (methyl ethyl ketone).
evaporated. As a result, the resin impregnation rate was 40.2 to 44
．． 4%, the Barcol hardness was 33.0.

これにフッ素樹脂（ルミフロンＬＦ２００、旭硝子＃ｌ
製）を２０μの膜厚となるように塗布した。Add to this fluororesin (Lumiflon LF200, Asahi Glass #l)
Co., Ltd.) was applied to a film thickness of 20 μm.

室温放置１０日間後、塗膜の硬度を測定すると、鉛筆硬
度で３Ｈであり、未処理品に近い木質の風合いを残した
ものであった。After being left at room temperature for 10 days, the hardness of the coating film was measured and was found to be 3H on a pencil hardness, retaining a woody texture similar to that of an untreated product.

実施例２：木質材料（米杉柾目板、厚み×巾×長さ一３
０ｘ３０ｘ６０　（ｍ）　、含水率１５．７％）を減圧
含浸釜内に入れ、釜内を５トール以下に排気減圧したの
ち、酢酸ビニル樹脂（平均分子量４３．０ＯＱ）を（メ
タノール；キシレン−７５＝２５）の混合溶媒で２８．
０％に希釈した溶液を注入した。ついで、釜内を常圧に
もどし、さらに１５〜１７−／−に加圧して９時間加圧
含浸した。その後、含浸釜より木質材料を取り出し、８
５℃の熱風乾燥機内に６５時間保持し溶媒を揮発させた
。Example 2: Wooden material (straight grained rice cedar board, thickness x width x length 13
0x30x60 (m), water content 15.7%) was placed in a vacuum impregnation pot, and the pressure inside the pot was evacuated to 5 torr or less, and then vinyl acetate resin (average molecular weight 43.0OQ) was added to (methanol; xylene-75= 28. with the mixed solvent of 25).
A solution diluted to 0% was injected. Then, the pressure inside the pot was returned to normal pressure, and the pressure was further increased to 15 to 17-/- for 9 hours of pressure impregnation. After that, take out the wood material from the impregnation pot and
The solution was kept in a hot air dryer at 5° C. for 65 hours to volatilize the solvent.

その結果、樹脂含浸率は３８．０〜４４．２％であった
。またバーコール硬度は２０．４であった。As a result, the resin impregnation rate was 38.0 to 44.2%. Moreover, the barcol hardness was 20.4.

これに、アクリルウレタン系塗料（ＵＡ−１３、三洋化
成工業領製）を２５μ塗布した。室温放置１４日間後、
塗膜の硬度は鉛筆硬度で２Ｈであり、風合が未処理品に
近いものであった。To this, 25 μm of acrylic urethane paint (UA-13, manufactured by Sanyo Chemical Industries) was applied. After 14 days at room temperature,
The hardness of the coating film was 2H on a pencil hardness scale, and the texture was close to that of an untreated product.

実施例３：木質材料（米松柾目板、厚みＸ巾×長さ一３
０Ｘ３０Ｘ６０　（Ｂ）　、含水率１２．８％）を減圧
含浸釜内に入れ、釜内を７．ｏトール以下に排気減圧し
たのち、ポリメチルメタクリレート樹脂（平均分子量４
１．０００）の酢酸メチル溶液（ポリメチルメタクリレ
ート樹脂濃度３５．０％）を注入した。ついで釜内を常
圧にもどし、更に１゜〜１２駄／−に加圧して、１２時
間加圧含浸した。Example 3: Wooden material (Japanese pine straight grain board, thickness x width x length 13
0X30X60 (B), water content 12.8%) was placed in a vacuum impregnation pot, and the inside of the pot was heated to 7. After reducing the exhaust pressure to below o torr, polymethyl methacrylate resin (average molecular weight 4
1.000) of methyl acetate solution (polymethyl methacrylate resin concentration 35.0%) was injected. Then, the pressure inside the pot was returned to normal pressure, and the pressure was further increased to 1° to 12°/- for 12 hours of pressure impregnation.

その後含浸釜より木質材料を取り出し、８０℃熱風乾燥
機内に５０時間保持して溶媒（酢酸エチル）を揮発させ
た。その結果、樹脂含浸率は３０．５〜３６．４％であ
った。またバーコール硬度は２７．０であった。Thereafter, the wood material was taken out from the impregnation pot and kept in a hot air dryer at 80° C. for 50 hours to volatilize the solvent (ethyl acetate). As a result, the resin impregnation rate was 30.5 to 36.4%. Moreover, the barcol hardness was 27.0.

これに、セラミック系塗料（グラス力、リボール社ｍ）
を膜厚１５μでコーティングした。室温で２０日後、塗
膜の硬度は鉛筆硬度で５Ｈであった。このものは、若干
硬い感じはあるが、まだ木質の肌合いを残したものであ
った。In addition, ceramic paint (Glass Power, Reball Co., Ltd.)
was coated with a film thickness of 15μ. After 20 days at room temperature, the hardness of the coating film was 5H on a pencil hardness scale. Although this item felt a little hard, it still had a woody feel to it.

実施例４：実施例１の木質基材を＃１８０のサンディン
グベーパで軽くサンディングし、ポリウレタン樹脂塗料
（ポリウラツクＮａ２００　Ｃ，四面塗料＠製）を１５
μ塗布し、硬化後、＃２４０のサンディングを行ない、
さらに同様の塗料を１０μ塗布した。硬化処理（４０℃
で６０分）後の硬度は鉛筆硬度でＩＨであり、木質の風
合いを残したものであった。Example 4: The wood base material of Example 1 was lightly sanded with #180 sanding vapor, and a polyurethane resin paint (Polyuratsuku Na200 C, manufactured by Yotsuya Paint@) was applied for 15 minutes.
Apply μ, and after curing, sand with #240.
Furthermore, 10μ of the same paint was applied. Hardening treatment (40℃
After 60 minutes), the hardness was IH in terms of pencil hardness, and a woody texture remained.

〔発明の効果〕〔Effect of the invention〕

この発明によれば、親水性ポリマーを含浸させた木質材
料の高耐水性（寸法安定性、耐吸水性）と、この木質材
料の表面に塗布した高耐候性塗料の有する高耐候性、耐
汚染性、耐栗品性などの性情とが総合的に付与、合致さ
れた形となり、木質感を残したままで耐久性にきわめて
すぐれたものになるという効果がある。According to this invention, the high water resistance (dimensional stability, water absorption resistance) of a wood material impregnated with a hydrophilic polymer, and the high weather resistance and stain resistance of a highly weather resistant paint applied to the surface of this wood material. The result is a shape that is comprehensively given and matched with properties such as hardness and chestnut resistance, and has the effect of being extremely durable while retaining its wood feel.

この発明ではフッ素系等の高耐候性塗料を木質材料の表
面に塗布したが、木質材料に含浸する溶剤可溶型の親水
性ポリマーにフッ素樹脂を添加して溶剤と共に木質材料
に含浸し乾燥して、溶剤を除去するようにしてもよい、
この場合も、木質材料の硬度（バーコール硬度）は４０
以下とし、前記親水性ポリマーとフッ素樹脂との含浸量
は木質材料１００重量部に対して５〜５０重量部とする
のが好ましい。In this invention, a highly weather-resistant paint such as a fluorine-based paint is applied to the surface of the wood material, but a fluororesin is added to a solvent-soluble hydrophilic polymer that is impregnated into the wood material, and the material is impregnated with a solvent and dried. The solvent may be removed by
In this case as well, the hardness of the wood material (Barcol hardness) is 40
The amount of impregnation of the hydrophilic polymer and fluororesin is preferably 5 to 50 parts by weight per 100 parts by weight of the wood material.

かかる場合も、前記と同様に木質材料の木質感を残した
ままで、耐汚染性、耐薬品性、耐水性、耐候性、撥水性
などの性能を付与向上させることができる。ちなみに、
通常の重合性樹脂を注入、硬化してなる。木材−プラス
チック複合体に比べ、寸法安定性で約２．５倍、吸水性
で１．０〜３．０倍の効果がある。In such a case as well, it is possible to impart and improve performances such as stain resistance, chemical resistance, water resistance, weather resistance, and water repellency while retaining the woody feel of the wood material, as described above. By the way,
It is made by injecting and curing ordinary polymeric resin. Compared to wood-plastic composites, it is about 2.5 times more effective in dimensional stability and 1.0 to 3.0 times more effective in water absorption.

ここで、使用する木質材料、親水性ポリマーおよび溶剤
は前記と同じである。フッ素樹脂としては、ポリテトラ
フルオロエチレン、ポリクロルトリフルオロエチレン、
ポリフッ化ビニル、フッ化ビニリデン、ヘキサフルオロ
プロピレン−テトラフルオロエチレン共重合体、クロル
トリフルオロエチレンーフフ化ビニリデン共重合体など
があげられるが、他の樹脂との相溶性がなく、通常はパ
ウダーの形で混入しなければならないなどの問題があり
、使用範囲は限定される。それゆえ、好ましくはパーフ
ルオロアルキル基を有するアクリレート樹脂あるいはこ
れと他のモノマーとの共ｍ合物などからなる。パーフル
オロアルキル化合物の形となったものが良い、このパー
フルオロアルキル化合物は、パーフルオロアルキル基の
疎水性、疎油性と他の樹脂側の親油性、親水性の両方の
特性を持つため、添加する樹脂体あるいは溶媒とは親水
性、親油性基の効果によって相溶性が良く、樹脂体、固
化後は樹脂体の表面側でＣＦ３基が均一に配向された形
となり、耐汚染性、耐候性、耐水性などの特徴を発揮す
る。したがって、このような含フツ素化合物を選定する
のが望ましい、さらに、必要に応じて着色剤、難燃剤、
防黴剤などの添加物を添加してもよい。Here, the wood material, hydrophilic polymer and solvent used are the same as described above. Examples of fluororesins include polytetrafluoroethylene, polychlorotrifluoroethylene,
Examples include polyvinyl fluoride, vinylidene fluoride, hexafluoropropylene-tetrafluoroethylene copolymer, and chlorotrifluoroethylene-vinylidene fluoride copolymer, but they are not compatible with other resins and are usually used in powder form. There are problems such as having to mix it in the form of a liquid, which limits its range of use. Therefore, it preferably consists of an acrylate resin having a perfluoroalkyl group or a co-compound of this and other monomers. It is best to use a perfluoroalkyl compound in the form of a perfluoroalkyl compound.This perfluoroalkyl compound has both the hydrophobic and oleophobic properties of the perfluoroalkyl group and the lipophilic and hydrophilic properties of other resins. It has good compatibility with the resin body or solvent due to the effects of hydrophilic and lipophilic groups, and after solidification, the CF3 groups are uniformly oriented on the surface side of the resin body, resulting in stain resistance and weather resistance. , exhibits characteristics such as water resistance. Therefore, it is desirable to select such a fluorine-containing compound, and if necessary, colorants, flame retardants,
Additives such as antifungal agents may be added.

次に参考例をあげて説明する。Next, a reference example will be given and explained.

参考例１：木質材料（米松板目板、厚み×巾×長さ一３
０Ｘ３０Ｘ６０　（鶴）、含水率１４．１％）を減圧含
浸釜内に入れ、釜内を１０トール以下に排気減圧したの
ち、ポリウレタン樹脂（平均分子１）１８．０００）の
メチルエチルケトン溶液（ポリウレタン樹脂濃度４０．
５％）に、フッ素系樹脂（サーフロン３３８２、旭硝子
■製）を０．２％添加した溶液を注入した。ついで釜内
を常圧にもどし、浸漬した状態を保ちながら２５時間浸
漬を行なった。その後、含浸釜より取り出し７０℃の温
風乾燥機内に６０時間保持して、溶媒（メチルエチルケ
トン）を揮発させた。その結果、樹脂含浸率は、４０．
０〜４５．０％でバーコール硬度３０．２であった。Reference example 1: Wooden material (Japanese pine board, thickness x width x length 13
0 x 30 40.
A solution containing 0.2% of a fluororesin (Surflon 3382, manufactured by Asahi Glass ■) was injected into the sample. Then, the inside of the pot was returned to normal pressure, and immersion was continued for 25 hours while maintaining the immersion state. Thereafter, it was taken out from the impregnation pot and kept in a hot air dryer at 70° C. for 60 hours to volatilize the solvent (methyl ethyl ketone). As a result, the resin impregnation rate was 40.
The Barcol hardness was 30.2 at 0% to 45.0%.

参考例２：木質材料（米杉板目板、厚み×巾×長さ一３
０ｘ３０ｘ６０　（鶴）、含水率１５．２％）を減圧含
浸釜内に入れ、釜内を５トール以下に排気減圧したのち
、ポリ酢酸ビニル樹脂（平均分子量４１．０００）をメ
タノール：キシレンが８０：２０の混合溶媒で２９．０
９，６に希釈した溶液にフッ素系樹脂であるパーフルオ
ロアルキルＥＯ付加物（サーフロンＳ−１４５、旭硝子
■製）を０．５％添加した溶液を注入した。ついで、釜
内を常圧にもどし、更に１５〜１７−／−に加圧して、
１０時間加圧含浸した。その後、含浸釜より取り出し、
８５℃熱風乾燥機内に５０時間保持し、溶媒を揮発させ
た。その結果樹脂含浸率は３９．２〜４４．４％であつ
た。又、バーコール硬度が２１．０であった。Reference example 2: Wooden material (rice cedar grain board, thickness x width x length 13
0x30x60 (Tsuru), water content 15.2%) was placed in a vacuum impregnation pot, the pressure inside the pot was evacuated to 5 torr or less, and polyvinyl acetate resin (average molecular weight 41.000) was mixed with methanol: xylene in a proportion of 80: 29.0 with 20 mixed solvents
A solution in which 0.5% of a perfluoroalkyl EO adduct (Surflon S-145, manufactured by Asahi Glass ■), which is a fluororesin, was added was injected into the solution diluted to 9.6. Next, the pressure inside the pot was returned to normal pressure, and the pressure was further increased to 15 to 17-/-.
Impregnation was carried out under pressure for 10 hours. After that, take it out from the impregnation pot,
It was kept in a hot air dryer at 85° C. for 50 hours to volatilize the solvent. As a result, the resin impregnation rate was 39.2 to 44.4%. Further, the barcol hardness was 21.0.

参考例３：木質材料（米桧板目板、厚み×巾×長さ一３
ＱＸ３０Ｘ６０　（鶴）、含水率１２．４％）を減圧含
浸釜内に入れ釜内を７．０トール以下に排気減圧したの
ち、ポリメチルメタクリレート樹脂（平均分子１３８．
０００）の酢酸エチル溶液（ポリメチルメタクリレート
樹脂濃度３２．０％）にフッ素系樹脂（サーフロン５１
０１、旭硝子■製）を１．０％添加した溶液を注入した
、ついで釜内を常圧にもどし、更にｌＯ〜１２ｋｇ／ａ
Ｊに加圧して、９時間加圧含浸した。その後、含浸釜よ
り取り出し、８０℃熱風乾燥機内に４５時間保持して溶
媒（酢酸エチル）を揮発させた。その結果、樹脂含浸率
は、３２．５〜３８．０％であった。また、バーコール
硬度は２９．３であった。Reference example 3: Wooden material (Japanese cypress board, thickness x width x length 13
QX30X60 (Tsuru), water content 12.4%) was placed in a vacuum impregnation pot and the pressure inside the pot was evacuated to below 7.0 Torr, and then polymethyl methacrylate resin (average molecular weight 138.
Fluorine-based resin (Surflon 51
01, manufactured by Asahi Glass ■) was injected into the pot, and then the inside of the pot was returned to normal pressure, and further 10 ~ 12 kg/a was added.
Pressure was applied to J and impregnated under pressure for 9 hours. Thereafter, it was taken out from the impregnation pot and kept in a hot air dryer at 80° C. for 45 hours to volatilize the solvent (ethyl acetate). As a result, the resin impregnation rate was 32.5 to 38.0%. Moreover, the barcol hardness was 29.3.

Claims (4)

【特許請求の範囲】[Claims] （１）溶剤可溶型の親水性ポリマーをその溶剤と共に含
浸し乾燥させてなる木質材料に高耐候性塗料を塗布して
なる改質木質材料。(1) A modified wood material made by coating a wood material with a highly weather resistant paint on a wood material made by impregnating a solvent-soluble hydrophilic polymer with the solvent and drying it. （２）前記親水性ポリマーを含浸させた木質材料基材の
硬度（バーコール硬度）が４０以下である特許請求の範
囲第（１）項記載の改質木質材料。(2) The modified wood material according to claim (1), wherein the wood material base material impregnated with the hydrophilic polymer has a hardness (Barcol hardness) of 40 or less. （３）前記高耐候性塗料の塗布量を４０μ以下、塗膜硬
度（鉛筆硬度）を６Ｈ以下にした特許請求の範囲第（１
）項記載の改質木質材料。(3) The coating amount of the highly weather-resistant paint is 40μ or less, and the coating film hardness (pencil hardness) is 6H or less.
) The modified wood material described in section 2. （４）前記高耐候性塗料がフッ素系、ポリウレタン系、
シリコーン系、セラミック系である特許請求の範囲第（
１）項記載の改質木質材料。(4) The highly weather resistant paint is fluorine-based, polyurethane-based,
Claim No. 1 (which is silicone-based or ceramic-based)
Modified wood material described in section 1).