JPH09216208A - Manufacture of wooden material - Google Patents
Manufacture of wooden materialInfo
- Publication number
- JPH09216208A JPH09216208A JP2441996A JP2441996A JPH09216208A JP H09216208 A JPH09216208 A JP H09216208A JP 2441996 A JP2441996 A JP 2441996A JP 2441996 A JP2441996 A JP 2441996A JP H09216208 A JPH09216208 A JP H09216208A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- raw material
- low molecular
- aqueous solution
- molecular weight
- 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.)
- Withdrawn
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、床材や壁材などの
建築材料やギターなどの楽器の下地材などとして用いら
れる木質材料の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wood material used as a building material such as flooring or wall material or a base material for musical instruments such as guitars.
【０００２】[0002]
【従来の技術】森林の保護は地球環境にとって必要不可
欠の課題であり、森林の利用における理想循環系の確立
が急務とされている。特に、我が国は、国土の７０％が
森林におおわれているにも拘わらず、木材消費量の６０
％近くを海外の森林資源に依存しており、このような消
費形態の改善は、諸外国からも強く求められている。2. Description of the Related Art The protection of forests is an essential issue for the global environment, and there is an urgent need to establish an ideal circulation system in forest utilization. In particular, Japan consumes 60% of its wood consumption despite the fact that 70% of its land is covered with forests.
Nearly 80% depend on foreign forest resources, and improvements in such consumption patterns are also strongly demanded by other countries.
【０００３】我が国の森林資源といえば、例えば、戦
後、大規模な植林がおこなわれたスギ材であるが、これ
は低比重で軟質であるが故に、強度的性質や耐久性が劣
り、付加価値の高い有効な利用法が見出されておらず、
その多くは未だに森林に放置された状態である。このよ
うに未だに森林に放置された状態である未利用の木材、
或いは利用価値が余り高くない低位利用の木材、さらに
は農地廃棄物を利用して木質材料を製造することは、森
林の利用における理想循環系の確立に非常に有効な手段
であり、従来から例えば特開平７−２０６５０７号公報
で開示されているように、フェノール樹脂に木粉を充填
材として加え、これを加熱加圧成形してフェノール樹脂
を硬化させて木質材料を形成することがおこなわれてい
る。Speaking of Japanese forest resources is, for example, cedar wood that has undergone large-scale afforestation after the war, but because of its low specific gravity and softness, it has poor strength properties and durability, and its added value. High effective usage has not been found,
Most of them are still left in the forest. Unused wood that is still left in the forest like this,
Alternatively, the production of a wood-based material by utilizing low-use timber, which has not a very high utility value, and agricultural land waste, is a very effective means for establishing an ideal circulation system in the use of forests. As disclosed in Japanese Unexamined Patent Publication No. 7-206507, wood powder is added to a phenol resin as a filler, and this is heat-pressed to cure the phenol resin to form a wood material. There is.
【０００４】[0004]
【発明が解決しようとする課題】しかし上記従来例の木
質材料の製造方法では、成形の際の圧力が５〜３０ｋｇ
／ｃｍ2 と低いので、木粉や木質繊維の密着を極限まで
高めることができず、木質材料の曲げ強さや曲げヤング
率などの強度特性が低いという問題があった。また上記
従来例の木質材料は、膨潤率が高く、寸法安定性が小さ
いという問題があった。さらに上記従来例の木質材料
は、生分解性の低いフェノール樹脂を５０重量％以上も
含有しており、このため生分解処理（微生物による自然
分解処理）をおこうことができないという問題があっ
た。However, in the above-mentioned conventional method for manufacturing a wood-based material, the pressure during molding is 5 to 30 kg.
Since it is as low as / cm 2 , the adhesion of wood powder and wood fibers cannot be maximized, and there is a problem that the wood materials have low strength characteristics such as bending strength and bending Young's modulus. Further, the above-mentioned conventional woody materials have a problem that the swelling rate is high and the dimensional stability is low. Further, the above-mentioned conventional woody material contains phenol resin having a low biodegradability in an amount of 50% by weight or more, and therefore, there is a problem that biodegradation treatment (natural decomposition treatment by microorganisms) cannot be performed. .
【０００５】本発明は上記の点に鑑みてなされたもので
あり、強度特性が高く、また寸法安定性が大きく、さら
に焼却処理や生分解処理をおこうことができるプラスチ
ック様木質材料の製造方法を提供することを目的とする
ものである。The present invention has been made in view of the above points, and has a high strength characteristic, a large dimensional stability, and a method for producing a plastic-like wood material which can be incinerated or biodegraded. It is intended to provide.
【０００６】[0006]
【課題を解決するための手段】本発明の請求項１に記載
の発明は、木質原料に２〜２０重量％濃度の低分子量フ
ェノール樹脂水溶液を含浸させ、これを乾燥後、温度１
４０〜２００℃で且つ高圧でプレス成形することを特徴
とするものである。本発明において、高圧とは５００〜
１０００ｋｇ／ｃｍ2 の圧力である。According to a first aspect of the present invention, a wood raw material is impregnated with an aqueous solution of a low molecular weight phenolic resin having a concentration of 2 to 20% by weight, and this is dried at a temperature of 1%.
It is characterized in that press molding is performed at 40 to 200 ° C. and high pressure. In the present invention, the high pressure is 500 to
The pressure is 1000 kg / cm 2 .
【０００７】また本発明において、木質原料は長さ０．
８〜２．０ｍｍで直径５〜３００μｍのものを用いるこ
とができる。さらに本発明において、低分子量フェノー
ル樹脂水溶液の濃度が５〜１５重量％であることが好ま
しい。In the present invention, the wood raw material has a length of 0.
It is possible to use one having a diameter of 8 to 2.0 mm and a diameter of 5 to 300 μm. Further, in the present invention, the concentration of the low molecular weight phenolic resin aqueous solution is preferably 5 to 15% by weight.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。本発明において木質原料としては、木質繊維、木
粉、竹粉、オイルパームの廃材、新聞紙、コーリャン、
バガス、稲わら、籾殻などを用いることができ、通常で
は破棄するような材料を用いて再利用することができ
る。木質原料として木質繊維を用いた場合には、その長
さを０．８〜２．０ｍｍ、その直径を５〜３００μｍに
するのが好ましい。木質繊維の長さや直径がこれらの範
囲より逸脱すると木質繊維の間の密着性が低下する恐れ
がある。また木質原料として木粉や竹粉などを用いた場
合には、その大きさを１０〜１００メッシュにするのが
好ましい。木粉や竹粉などの大きさがこれらの範囲から
逸脱すると木粉や竹粉などの間の密着性が低下する恐れ
がある。Embodiments of the present invention will be described below. In the present invention, as the wood raw material, wood fiber, wood powder, bamboo powder, waste material of oil palm, newspaper, Kolyan,
Bagasse, rice straw, rice husk and the like can be used, and the material that is normally discarded can be reused. When wood fiber is used as the wood raw material, it is preferable that its length is 0.8 to 2.0 mm and its diameter is 5 to 300 μm. If the length and diameter of the wood fibers deviate from these ranges, the adhesion between the wood fibers may deteriorate. When wood powder or bamboo powder is used as the wood raw material, the size is preferably 10 to 100 mesh. If the size of wood powder or bamboo powder deviates from these ranges, the adhesion between wood powder and bamboo powder may decrease.
【０００９】低分子量フェノール樹脂としては分子量４
００以下のものを用いることができる。またレゾール型
のフェノール樹脂を使用するのが好ましく、このことで
木質原料にフェノール樹脂を非常に含浸させ易くするこ
とができる。さらに特定のカップリング剤と併用するこ
ともできる。尚、分子量２００未満の樹脂は入手不可能
であるので、低分子量フェノール樹脂の分子量の下限は
自ずと２００になる。A low molecular weight phenolic resin has a molecular weight of 4
Those of 00 or less can be used. Further, it is preferable to use a resol type phenol resin, which makes it very easy to impregnate the wood raw material with the phenol resin. Further, it can be used in combination with a specific coupling agent. Since a resin having a molecular weight of less than 200 is not available, the lower limit of the molecular weight of the low molecular weight phenolic resin is naturally 200.
【００１０】次に上記木質原料と低分子量フェノール樹
脂を用いた木質材料の製造について説明する。まず低分
子量フェノール樹脂を水に溶解させて濃度が２〜２０重
量％の低分子量フェノール樹脂水溶液を調製する。低分
子量フェノール樹脂水溶液の濃度が２重量％未満であれ
ば、木質原料に十分に低分子量フェノール樹脂を含浸さ
せることができず、本発明の木質材料の曲げ強度や曲げ
ヤング率を高くすることができなくなる恐れがあり、ま
た低分子量フェノール樹脂水溶液の濃度が２０重量％を
超えると、生分解されにくいフェノール樹脂成分の量が
増えて木質原料の有する生分解性が損なわれ、また製造
コストが高くなって好ましくない。Next, the production of a wood material using the above wood raw material and a low molecular weight phenolic resin will be described. First, a low molecular weight phenol resin is dissolved in water to prepare a low molecular weight phenol resin aqueous solution having a concentration of 2 to 20% by weight. When the concentration of the low molecular weight phenol resin aqueous solution is less than 2% by weight, the wood raw material cannot be sufficiently impregnated with the low molecular weight phenol resin, and the bending strength and bending Young's modulus of the wood material of the present invention can be increased. If the concentration of the low molecular weight phenolic resin aqueous solution exceeds 20% by weight, the amount of the phenolic resin component that is difficult to biodegrade increases and the biodegradability of the wood raw material is impaired, and the manufacturing cost is high. Is not desirable.
【００１１】さらに好ましい低分子量フェノール樹脂水
溶液の濃度は５〜１５重量％である。低分子量フェノー
ル樹脂水溶液の濃度が５重量％以上であれば、本発明の
木質材料をプラスチックのような外観を呈するプラスチ
ック様木質材料として形成することができ、水をはじく
と共に煮沸しても変形を生じないものである。また低分
子量フェノール樹脂水溶液の濃度が１５重量％以下であ
れば、本発明の木質材料の低分子量フェノール樹脂の含
浸量が少なくなって製造コストを抑えることができるも
のであり、しかも生分解されにくい樹脂成分が少なくな
ることによって、本発明の木質材料の生分解処理をおこ
ないやすくすることができるものである。The concentration of the low-molecular-weight phenol resin aqueous solution is more preferably 5 to 15% by weight. When the concentration of the low molecular weight phenolic resin aqueous solution is 5% by weight or more, the woody material of the present invention can be formed as a plastic-like woody material having a plastic-like appearance and can be deformed even when water is repelled and boiled. It does not occur. When the concentration of the low molecular weight phenolic resin aqueous solution is 15% by weight or less, the amount of the low molecular weight phenolic resin impregnated in the woody material of the present invention is small, and the production cost can be suppressed, and the biodegradation is difficult. By reducing the resin component, the woody material of the present invention can be easily biodegraded.
【００１２】次に常温下でこの低分子量フェノール樹脂
水溶液に上記木質原料を１〜２４時間浸漬して木質原料
に低分子量フェノール樹脂を含浸させる。次いで低分子
量フェノール樹脂を含浸させた木質原料を７０℃程度の
温度条件下で１２時間程度かけて乾燥させて木質原料の
含水率を２〜３％以下にする。木質原料の含水率が２〜
３％の範囲を上回ると、後述のプレス成形時にマット内
部の蒸気圧が増大して木質原料の間の密着性を向上させ
ることができない恐れがある。Next, the above-mentioned wood raw material is immersed in this low molecular weight phenol resin aqueous solution at room temperature for 1 to 24 hours to impregnate the wood raw material with the low molecular weight phenol resin. Then, the wood raw material impregnated with the low molecular weight phenolic resin is dried under a temperature condition of about 70 ° C. for about 12 hours to reduce the water content of the wood raw material to 2 to 3% or less. Moisture content of wood raw material is 2
If it exceeds the range of 3%, the vapor pressure inside the mat may increase at the time of press molding described later, and the adhesion between the wood raw materials may not be improved.
【００１３】次いで乾燥後の木質原料をマットに成形
し、次いでこのマットを温度１４０〜２００℃、圧力５
００〜１０００ｋｇ／ｃｍ2 で１５〜６０分間プレス
（圧締）成形して低分子量フェノール樹脂を硬化させる
ことによって、比重１．４近くにまで圧密された樹脂含
有率が２５重量％以下のプラスチック様木質材料を製造
することができる。上記プレス成形時の温度が１４０℃
未満であれば、低分子量フェノール樹脂を硬化させるこ
とができず、本発明のプラスチック様木質材料を製造す
ることができない。またプレス成形時の温度が２００℃
を超えると、低分子量フェノール樹脂が分解したり、或
いは製造コストが高くなって好ましくない。さらに上記
プレス成形時の圧力が５００ｋｇ／ｃｍ2 未満であれ
ば、木質原料の間の密着性を高くすることができない恐
れがあり、またプレス成形時の圧力が１０００ｋｇ／ｃ
ｍ2 を超えると、木質原料が破壊されて高い強度が得ら
れない恐れがある。Then, the dried wood raw material is formed into a mat, and the mat is then heated at a temperature of 140 to 200 ° C. under a pressure of 5
By molding (pressing) at 0 to 1000 kg / cm 2 for 15 to 60 minutes to cure the low molecular weight phenolic resin, the specific gravity is close to 1.4 and the resin content is 25 wt% or less. Woody materials can be manufactured. The temperature during the press molding is 140 ° C
If it is less than the above range, the low molecular weight phenolic resin cannot be cured and the plastic-like wood material of the present invention cannot be produced. The temperature during press molding is 200 ° C.
When it exceeds, the low molecular weight phenolic resin is decomposed or the manufacturing cost is increased, which is not preferable. Further, if the pressure during press molding is less than 500 kg / cm 2 , the adhesion between the wood raw materials may not be increased, and the pressure during press molding may be 1000 kg / c.
If it exceeds m 2 , the wood raw material may be destroyed and high strength may not be obtained.
【００１４】上記のようにして製造される本発明の木質
材料は、９０〜１７０ＭＰａの曲げ強さ（ＭＯＲ）を有
し、エンジニアリングプラスチックの下限値５０ＭＰａ
を大きく上回る。また本発明のプラスチック様木質材料
の比強度は合板のそれとほぼ等しく、木材繊維を原料と
する中密度繊維板（ＭＤＦ）の比強度の２倍近くにな
る。このように本発明のプラスチック様木質材料の曲げ
強さや比強度が大きくなる要因としては、低分子量フェ
ノール樹脂の含浸で可塑化した木質原料（木材エレメン
ト）同士がプレス成形時の熱圧過程で高度に圧密され密
着することで、破壊の起点となる木質原料（木材エレメ
ント）間あるいは木質原料内部の欠点（例えば密着不足
の部分）が極端に減少するためと考えられる。また木質
原料に含浸させた低分子量フェノール樹脂のフェノール
成分のソルボリシスによるリグニンの切断が木質原料の
可塑化ならびに密着性を増大させているとも考えられ
る。そして本発明の木質材料は、木質原料の細胞壁構造
を破壊せず残存させているので、上記の曲げ強さのよう
に優れた強度特性を有しているのに対して、従来からあ
る液化木材より製造した木質材料は、木質原料の細胞壁
構造を消失させて木質原料に熱流動性を付与しているた
めに、曲げ強さは最大でも９０ＭＰａ程度に留まるので
ある。The wood-based material of the present invention produced as described above has a bending strength (MOR) of 90 to 170 MPa, and the lower limit of the engineering plastic is 50 MPa.
Greatly exceeds. Further, the specific strength of the plastic-like woody material of the present invention is almost equal to that of plywood, which is almost twice the specific strength of a medium density fiberboard (MDF) made from wood fibers. As described above, the factors that increase the bending strength and the specific strength of the plastic-like wood material of the present invention are that the wood raw materials (wood elements) plasticized by the impregnation of the low molecular weight phenolic resin are highly advanced in the hot pressing process during press molding. It is conceivable that the defects (for example, the insufficiently adhered portion) between the wood raw materials (wood elements) or the interior of the wood raw material, which are the starting points of the destruction, are extremely reduced by the compaction and close contact with the wood raw materials. It is also considered that the cutting of lignin by the solvolysis of the phenol component of the low molecular weight phenolic resin impregnated in the wood raw material increases the plasticization and adhesion of the wood raw material. And since the wood material of the present invention allows the cell wall structure of the wood material to remain without being destroyed, it has excellent strength characteristics such as the above bending strength, whereas conventional liquefied wood. The wood material produced by the above method has a bending strength of about 90 MPa at the maximum because the cell wall structure of the wood material is eliminated to give the wood material thermal fluidity.
【００１５】また本発明の木質材料は、木質原料が８０
重量％程度、樹脂成分が２０重量％程度で構成されてい
てもプラスチックのような外観を有しており、水をはじ
くと共に煮沸しても変形を生じないものである。また本
発明の木質材料は膨潤率が０．１％以下と小さいので、
湿度の変化に対する寸法安定性が高いものである。さら
に本発明の木質材料は、生分解されにくい樹脂成分の含
有率が低いので、生分解処理を容易におこなうことがで
きると共に、木質原料及びフェノール樹脂より構成され
ていることから、有毒ガスを発生したり焼却炉を傷める
ことなく焼却処理をおこなうことができ、プラスチック
の代替材料としての利用を期待することができる。尚、
木質原料の可塑性をさらに増大させて、マット全体に亘
って均一に高圧力を加えることができれば、木質原料を
９０重量％以上含むプラスチック様木質材料を得ること
もできる。The woody material of the present invention comprises 80 woody materials.
Even if it is composed of about 20% by weight and the resin component is about 20% by weight, it has a plastic-like appearance and does not deform even when it is repelled from water and boiled. Moreover, since the woody material of the present invention has a small swelling ratio of 0.1% or less,
It has high dimensional stability against changes in humidity. Furthermore, since the wood material of the present invention has a low content of resin components that are difficult to biodegrade, it can be easily biodegraded, and it is composed of a wood raw material and a phenol resin. It can be incinerated without damaging the incinerator and can be expected to be used as a substitute material for plastics. still,
If the plasticity of the wood raw material can be further increased and a high pressure can be uniformly applied to the entire mat, a plastic-like wood material containing 90 wt% or more of the wood raw material can be obtained.
【００１６】また本発明の木質材料は、従来からおこな
われている湿式のファイバーボードの製造工程と類似し
ており、よって既存の製造設備を利用して容易に実用化
することができるものである。そして本発明の木質材料
は、配線板用の基板や包丁などの柄、或いは床材や床下
地材など曲げ強さが必要な箇所に使用され、特にその軽
さや高耐久性などの性質から居住空間の建材として使用
するのが有効であり、またベークライトやアルミニウム
板、及びプラスチックの代替品として用いることができ
る。Further, the woody material of the present invention is similar to the conventional wet fiberboard manufacturing process, and can be easily put into practical use by utilizing the existing manufacturing equipment. . The wood-based material of the present invention is used in patterns such as wiring boards and knives, or flooring and flooring materials where bending strength is required. Especially, due to its lightness and high durability, it is used for living. It is effective to use as a building material for space, and can also be used as a substitute for bakelite, aluminum plate, and plastic.
【００１７】[0017]
【実施例】以下、本発明を実施例によって詳述する。 （実施例１）木質原料としては、ＰＤＤＲで解繊した針
葉樹の木質繊維を使用した。低分子量フェノール樹脂と
してはアイカ工業（株）社製のフェノール樹脂（平均分
子量が２００、主成分はジメチロールフェノール、トリ
メチロールフェノールである）を使用した。EXAMPLES The present invention will be described in detail below with reference to examples. (Example 1) As a wood raw material, a wood fiber of a coniferous tree disintegrated by PDDR was used. As the low molecular weight phenolic resin, a phenolic resin manufactured by Aika Kogyo Co., Ltd. (average molecular weight: 200, main components being dimethylolphenol and trimethylolphenol) was used.
【００１８】まず上記フェノール樹脂を水に溶解させて
濃度５重量％の低分子量フェノール樹脂水溶液を調製
し、この水溶液に上記木質原料を１日間浸漬した。また
この浸漬の間に−１気圧の減圧と３気圧の加圧とを３時
間おきに繰り返しておこない、減圧加圧注入法によって
木質原料に低分子量フェノール樹脂を含浸させた。次に
低分子量フェノール樹脂を含浸させた木質原料を７０℃
の温度で２４時間乾燥させた後、１５０℃、１０００ｋ
ｇ／ｃｍ2 で３０分間圧締して低分子量フェノール樹脂
を硬化させて木質材料を製造した。First, the phenol resin was dissolved in water to prepare an aqueous solution of a low molecular weight phenol resin having a concentration of 5% by weight, and the wood raw material was immersed in this aqueous solution for 1 day. Further, during this immersion, depressurization of -1 atm and pressurization of 3 atm were repeated every 3 hours to impregnate the wood raw material with the low molecular weight phenol resin by the depressurization and pressure injection method. Next, the wood raw material impregnated with the low molecular weight phenolic resin is heated to 70 ° C.
After drying at the temperature of 24 hours, 150 ℃, 1000k
A low molecular weight phenolic resin was cured by pressing at g / cm 2 for 30 minutes to produce a wood material.
【００１９】（実施例２）濃度１０重量％の低分子量フ
ェノール樹脂水溶液を用いた以外は実施例１と同様にし
て木質材料を製造した。 （実施例３）木質原料として、ＰＤＤＲで解繊した針葉
樹の木質繊維を粉砕して３０メッシュを通過した木質繊
維を使用し、且つ低分子量フェノール樹脂水溶液として
濃度３重量％のものを用いた以外は実施例１と同様にし
て木質材料を製造した。Example 2 A woody material was produced in the same manner as in Example 1 except that a low molecular weight phenolic resin aqueous solution having a concentration of 10% by weight was used. (Example 3) As a wood raw material, wood fibers obtained by crushing wood fibers of a coniferous tree disintegrated by PDDR and passing through 30 mesh were used, and a low-molecular-weight phenol resin aqueous solution having a concentration of 3% by weight was used. Produced a wood-based material in the same manner as in Example 1.
【００２０】（実施例４）低分子量フェノール樹脂水溶
液として濃度５重量％のものを用いた以外は実施例３と
同様にして木質材料を製造した。 （実施例５）低分子量フェノール樹脂水溶液として濃度
１０重量％のものを用いた以外は実施例３と同様にして
木質材料を製造した。Example 4 A woody material was manufactured in the same manner as in Example 3 except that the aqueous solution of the low molecular weight phenolic resin had a concentration of 5% by weight. (Example 5) A wood-based material was produced in the same manner as in Example 3 except that a low molecular weight phenolic resin aqueous solution having a concentration of 10% by weight was used.
【００２１】（実施例６）木質原料として針葉樹の木粉
を使用し、且つ低分子量フェノール樹脂水溶液として濃
度１０重量％のものを用いた以外は実施例１と同様にし
て木質材料を製造した。 （実施例７）木質原料として竹粉を使用し、且つ低分子
量フェノール樹脂水溶液として濃度１０重量％のものを
用いた以外は実施例１と同様にして木質材料を製造し
た。(Example 6) A woody material was produced in the same manner as in Example 1 except that coniferous wood powder was used as a woody raw material and a low molecular weight phenolic resin aqueous solution having a concentration of 10% by weight was used. (Example 7) A woody material was produced in the same manner as in Example 1 except that bamboo powder was used as a woody raw material and a low molecular weight phenolic resin aqueous solution having a concentration of 10% by weight was used.
【００２２】（実施例８）木質原料として新聞紙を使用
し、且つ低分子量フェノール樹脂水溶液として濃度５重
量％のものを用いた以外は実施例１と同様にして木質材
料を製造した。 （実施例９）木質原料として新聞紙を使用し、且つ低分
子量フェノール樹脂水溶液として濃度１０重量％のもの
を用いた以外は実施例１と同様にして木質材料を製造し
た。Example 8 A woody material was produced in the same manner as in Example 1 except that newspaper was used as the woody raw material and that the aqueous solution of the low molecular weight phenolic resin had a concentration of 5% by weight. (Example 9) A woody material was produced in the same manner as in Example 1 except that newsprint was used as the woody raw material, and that the aqueous solution of the low molecular weight phenolic resin had a concentration of 10% by weight.
【００２３】（実施例１０）木質原料としてハードボー
ドを使用し、且つ低分子量フェノール樹脂水溶液として
濃度２０重量％のものを用いた以外は実施例１と同様に
して木質材料を製造した。 （実施例１１）木質原料としてハードボードを使用し、
且つ低分子量フェノール樹脂水溶液として濃度１０重量
％のものを用いた以外は実施例１と同様にして木質材料
を製造した。Example 10 A woody material was produced in the same manner as in Example 1 except that a hardboard was used as the woody raw material and a low molecular weight phenolic resin aqueous solution having a concentration of 20% by weight was used. (Example 11) Using a hard board as a wood raw material,
A woody material was produced in the same manner as in Example 1 except that the low molecular weight phenolic resin aqueous solution used had a concentration of 10% by weight.
【００２４】（実施例１２）木質原料としてハードボー
ドを使用し、且つ低分子量フェノール樹脂水溶液として
濃度１５重量％のものを用いた以外は実施例１と同様に
して木質材料を製造した。 （実施例１３）木質原料としてＭＤＦを使用し、且つ低
分子量フェノール樹脂水溶液として濃度２０重量％のも
のを用いた以外は実施例１と同様にして木質材料を製造
した。Example 12 A woody material was produced in the same manner as in Example 1 except that a hardboard was used as a woody raw material and a low molecular weight phenolic resin aqueous solution having a concentration of 15% by weight was used. (Example 13) A woody material was produced in the same manner as in Example 1 except that MDF was used as a woody raw material and a low molecular weight phenolic resin aqueous solution having a concentration of 20% by weight was used.
【００２５】（実施例１４）木質原料として籾殻粉を使
用し、且つ低分子量フェノール樹脂水溶液として濃度２
０重量％のものを用いた以外は実施例１と同様にして木
質材料を製造した。 （比較例１）木質原料としては、ＰＤＤＲで解繊した針
葉樹の木質繊維を粉砕して３０メッシュを通過した木質
繊維を使用した。この木質繊維を１５０℃、１０００ｋ
ｇ／ｃｍ2 で３０分間圧締して木質材料を製造した。Example 14 Rice husk powder was used as a wood raw material, and a low molecular weight phenolic resin aqueous solution had a concentration of 2
A woody material was produced in the same manner as in Example 1 except that 0% by weight was used. (Comparative Example 1) As a wood raw material, a wood fiber obtained by crushing a wood fiber of a coniferous tree disintegrated by PDDR and passing through 30 mesh was used. This wood fiber at 150 ℃, 1000k
A wood-based material was produced by pressing at 30 g / cm 2 for 30 minutes.
【００２６】（比較例２）木質原料として、ＰＤＤＲで
解繊した針葉樹の木質繊維を粉砕して３０メッシュを通
過した木質繊維を使用し、且つ低分子量フェノール樹脂
水溶液として濃度１重量％のものを用いた以外は実施例
１と同様にして木質材料を製造した。上記実施例１乃至
１４で製造されたプラスチック様木質材料と比較例１、
２で製造された木質材料について、密度と曲げ強さ（Ｍ
ＯＲ）と曲げヤング率（ＭＯＥ）と含水率と膨潤率を測
定した。結果を表１に示す。尚、表１の含水率は雰囲気
を２０℃、６５％Ｒ．Ｈ．の条件にして測定し、膨潤率
は雰囲気を全乾から２０℃、６５％Ｒ．Ｈ．の条件にし
て測定した。また表１には合板などの既存の木質材料の
密度と曲げ強さと曲げヤング率も記載した。(Comparative Example 2) As a wood raw material, a wood fiber obtained by crushing a wood fiber of a conifer defibrated by PDDR and passing through 30 mesh is used, and a low molecular weight phenol resin aqueous solution having a concentration of 1% by weight is used. A woody material was produced in the same manner as in Example 1 except that it was used. The plastic-like wood-based materials produced in Examples 1 to 14 and Comparative Example 1,
The density and flexural strength (M
OR), Young's modulus of bending (MOE), water content and swelling ratio were measured. The results are shown in Table 1. The water content in Table 1 was 20 ° C. and 65% R.V. H. The swelling rate was measured by completely drying the atmosphere from 20 ° C. to 65% R.S. H. It was measured under the condition of. Table 1 also shows the density, bending strength and bending Young's modulus of existing wood materials such as plywood.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１から実施例１乃至１４は合板などの既
存の木質材料よりも曲げ強さや曲げヤング率が大きく、
本発明の木質材料は強度特性が高いことが判る。また高
密度ポリエチレンタイプのランダム配向ガラス繊維強化
プラスチック（ＧＦＲＰ、ガラス繊維３０重量％含有）
の曲げ強さ（８６ＭＰａ）や曲げヤング率（５．５ＧＰ
ａ）、或いはポリエチレンタイプのランダム配向ガラス
繊維強化プラスチック（ＧＦＲＰ、ガラス繊維３０重量
％含有）の曲げ強さ（６５ＭＰａ）や曲げヤング率
（６．５ＧＰａ）よりも、上記実施例１乃至１４は曲げ
強さや曲げヤング率が大きく、本発明の木質材料は強度
特性が高いことが判る。また表１から実施例１乃至１４
は比較例１、２よりも膨潤率が小さく、特に実施例２、
４、５、６、７、１４では膨潤率が０．１％未満であ
り、よって本発明の木質材料は寸法安定性が高いことが
判る。From Table 1, Examples 1 to 14 have larger bending strength and bending Young's modulus than existing wood materials such as plywood,
It can be seen that the wood material of the present invention has high strength characteristics. High density polyethylene type randomly oriented glass fiber reinforced plastic (GFRP, containing 30% by weight glass fiber)
Bending strength (86 MPa) and bending Young's modulus (5.5 GP)
a), or the bending strength (65 MPa) and bending Young's modulus (6.5 GPa) of polyethylene type randomly oriented glass fiber reinforced plastic (GFRP, containing 30% by weight of glass fiber) It can be seen that the strength and bending Young's modulus are large and the wood-based material of the present invention has high strength characteristics. Further, from Table 1, Examples 1 to 14
Has a smaller swelling ratio than Comparative Examples 1 and 2, and in particular Example 2,
In Nos. 4, 5, 6, 7, and 14, the swelling rate was less than 0.1%, and thus it can be seen that the woody material of the present invention has high dimensional stability.
【００２９】[0029]
【発明の効果】上記のように本発明の請求項１に記載の
発明は、木質原料に２〜２０重量％濃度の低分子量フェ
ノール樹脂水溶液を含浸させ、これを乾燥後、温度１４
０〜２００℃で且つ高圧でプレス成形するので、比重の
大きい木質材料を形成することができ、強度特性が高
く、また寸法安定性が大きい木質材料を製造することが
できるものであり、しかもこの木質材料は低分子量フェ
ノール樹脂の含有率が低いので、生分解処理をおこうこ
とができるものであり、さらに木質原料及びフェノール
樹脂より構成されていることから、有毒ガスを発生した
り焼却炉を傷めることなく焼却処理をおこなうことがで
きるものである。As described above, according to the invention described in claim 1 of the present invention, a wood raw material is impregnated with a low molecular weight phenolic resin aqueous solution having a concentration of 2 to 20% by weight, and this is dried at a temperature of 14
Since press molding is performed at 0 to 200 ° C. and high pressure, a wood material having a large specific gravity can be formed, and a wood material having high strength characteristics and large dimensional stability can be manufactured. Since the wood material has a low content of low-molecular weight phenolic resin, it can be subjected to biodegradation treatment.Because it is composed of wood raw material and phenolic resin, it does not generate toxic gas or burns in an incinerator. It can be incinerated without damaging it.
【００３０】また本発明の請求項２に記載の発明は、５
００〜１０００ｋｇ／ｃｍ2 の圧力でプレス成形するの
で、木質原料を破壊することなく木質原料の間の密着性
を高くすることができ、高強度の木質材料を製造するこ
とができるものである。さらに本発明の請求項３に記載
の発明は、長さ０．８〜２．０ｍｍで直径５〜３００μ
ｍの木質原料を用いるので、木質原料の間の密着性が低
下するのを防止することができ、木質材料の曲げ強さや
曲げヤング率を高くすることができるものである。Further, the invention according to claim 2 of the present invention is 5
Since the press molding is performed at a pressure of 0 to 1000 kg / cm 2 , the adhesion between the wood raw materials can be increased without destroying the wood raw materials, and a high-strength wood material can be manufactured. Furthermore, the invention according to claim 3 of the present invention has a length of 0.8 to 2.0 mm and a diameter of 5 to 300 μm.
Since the wood raw material of m is used, the adhesion between the wood raw materials can be prevented from being deteriorated, and the bending strength and the bending Young's modulus of the wood material can be increased.
【００３１】また本発明の請求項４に記載の発明は、低
分子量フェノール樹脂水溶液の濃度が５〜１５重量％で
あるので、木質材料をプラスチックのような外観にする
ことができ、水をはじき、煮沸しても変形を生じない木
質材料を形成することができるものである。また木質材
料の低分子量フェノール樹脂の含浸量が少なくなって製
造コストを抑えることができるものであり、しかも生分
解されにくい樹脂成分が少なくなることによって、木質
材料の生分解処理をおこないやすくすることができるも
のである。In the invention according to claim 4 of the present invention, since the concentration of the low molecular weight phenolic resin aqueous solution is 5 to 15% by weight, the wooden material can have a plastic-like appearance and repels water. It is possible to form a wood material that does not deform even when boiled. In addition, the amount of low molecular weight phenolic resin impregnated in the wood material can be reduced to reduce the manufacturing cost, and the resin component that is difficult to biodegrade is reduced, which facilitates the biodegradation treatment of the wood material. Is something that can be done.
Claims (4)
量フェノール樹脂水溶液を含浸させ、これを乾燥後、温
度１４０〜２００℃で且つ高圧でプレス成形することを
特徴とする木質材料の製造方法。1. A method for producing a wood material, characterized in that a wood raw material is impregnated with an aqueous solution of a low molecular weight phenolic resin having a concentration of 2 to 20% by weight, dried and then press-molded at a temperature of 140 to 200 ° C. and a high pressure. Method.
プレス成形することを特徴とする請求項１に記載の木質
材料の製造方法。 2. The method for producing a wood-based material according to claim 1, wherein the press-molding is performed at a pressure of 500 to 1000 kg / cm 2 .
０μｍの木質原料を用いることを特徴とする請求項１又
は２に記載の木質材料の製造方法。3. A length of 0.8 to 2.0 mm and a diameter of 5 to 30.
The method for producing a wood material according to claim 1 or 2, wherein a wood material having a thickness of 0 µm is used.
５〜１５重量％であることを特徴とする請求項１乃至３
のいずれかに記載の木質材料の製造方法。4. The low-molecular-weight phenolic resin aqueous solution has a concentration of 5 to 15% by weight.
A method for producing a wood material according to any one of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2441996A JPH09216208A (en) | 1996-02-09 | 1996-02-09 | Manufacture of wooden material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2441996A JPH09216208A (en) | 1996-02-09 | 1996-02-09 | Manufacture of wooden material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09216208A true JPH09216208A (en) | 1997-08-19 |
Family
ID=12137643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2441996A Withdrawn JPH09216208A (en) | 1996-02-09 | 1996-02-09 | Manufacture of wooden material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09216208A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000054947A1 (en) * | 1999-03-17 | 2000-09-21 | Handay Sendayung | A method for producing sheet or board of bamboo trees fibers |
| WO2000059697A1 (en) * | 1999-04-01 | 2000-10-12 | Handay Sendayung | A method for producing sheet or board of fibers of oil palm stem |
| ES2162542A1 (en) * | 1998-11-04 | 2001-12-16 | Gayol Roman Martinez | Catalytic procedure for the acoustic conservation and improvement of special woods and their derivatives |
| JP2002522267A (en) * | 1998-08-11 | 2002-07-23 | ヴィルムス ハインリッヒ | Bactericidal antibacterial wood particles-laminated |
| JP2006342595A (en) * | 2005-06-09 | 2006-12-21 | Noda Corp | Substrate material for construction |
| WO2008010462A1 (en) * | 2006-07-19 | 2008-01-24 | Pioneer Corporation | Nanofiber sheet, process for producing the same, and fiber-reinforced composite material |
| JP2011020430A (en) * | 2009-06-19 | 2011-02-03 | Sekisui Chem Co Ltd | Woody composite material and method for manufacturing the same |
| JP2013188887A (en) * | 2012-03-12 | 2013-09-26 | Panasonic Corp | Fiberboard |
| JP2018069670A (en) * | 2016-11-02 | 2018-05-10 | 株式会社Ｌｉｘｉｌ | Fiber board |
| CN113897071A (en) * | 2021-09-30 | 2022-01-07 | 安徽森泰木塑科技地板有限公司 | Preparation method of resin-impregnated wood powder filled wood-plastic composite material |
-
1996
- 1996-02-09 JP JP2441996A patent/JPH09216208A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002522267A (en) * | 1998-08-11 | 2002-07-23 | ヴィルムス ハインリッヒ | Bactericidal antibacterial wood particles-laminated |
| ES2162542A1 (en) * | 1998-11-04 | 2001-12-16 | Gayol Roman Martinez | Catalytic procedure for the acoustic conservation and improvement of special woods and their derivatives |
| WO2000054947A1 (en) * | 1999-03-17 | 2000-09-21 | Handay Sendayung | A method for producing sheet or board of bamboo trees fibers |
| WO2000059697A1 (en) * | 1999-04-01 | 2000-10-12 | Handay Sendayung | A method for producing sheet or board of fibers of oil palm stem |
| JP2006342595A (en) * | 2005-06-09 | 2006-12-21 | Noda Corp | Substrate material for construction |
| WO2008010462A1 (en) * | 2006-07-19 | 2008-01-24 | Pioneer Corporation | Nanofiber sheet, process for producing the same, and fiber-reinforced composite material |
| JP2008024788A (en) * | 2006-07-19 | 2008-02-07 | Kyoto Univ | Nanofiber sheet, method for producing the same, and fiber-reinforced composite material reinforced therewith |
| JP2011020430A (en) * | 2009-06-19 | 2011-02-03 | Sekisui Chem Co Ltd | Woody composite material and method for manufacturing the same |
| JP2013188887A (en) * | 2012-03-12 | 2013-09-26 | Panasonic Corp | Fiberboard |
| JP2018069670A (en) * | 2016-11-02 | 2018-05-10 | 株式会社Ｌｉｘｉｌ | Fiber board |
| CN113897071A (en) * | 2021-09-30 | 2022-01-07 | 安徽森泰木塑科技地板有限公司 | Preparation method of resin-impregnated wood powder filled wood-plastic composite material |
| CN113897071B (en) * | 2021-09-30 | 2023-11-07 | 安徽森泰木塑科技地板有限公司 | Preparation method of resin-impregnated wood powder filled wood-plastic composite material |
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