JP2009298132A - Improved lumber and method of manufacturing the same - Google Patents
Improved lumber and method of manufacturing the same Download PDFInfo
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- JP2009298132A JP2009298132A JP2008180725A JP2008180725A JP2009298132A JP 2009298132 A JP2009298132 A JP 2009298132A JP 2008180725 A JP2008180725 A JP 2008180725A JP 2008180725 A JP2008180725 A JP 2008180725A JP 2009298132 A JP2009298132 A JP 2009298132A
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Abstract
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本発明は、アブラヤシ木部の改良木材とその製造方法に関する。 The present invention relates to an improved timber of an oil palm xylem and a method for producing the same.
アブラヤシ、別名パームは、果肉と種子から油脂を取るため、マレーシアをはじめ熱帯地域で広く栽培されている。しかし、アブラヤシは成木となって一定期間過ぎると、油脂の生産性が落ちるため、伐採され、新しい木に植えかえられる。
伐採されたアブラヤシ木部は、大部分が放置又は焼却されている。理由は、油ヤシ木部が、寸法安定性が悪い、毛羽立ちが多い、腐敗しやすい、力学的強度が低い等、木材としての利用困難なためである。
アブラヤシの木部を有効利用することは、木材資源の枯渇が深刻な問題となっている今日、特に意義が大きい。Oil palm, also known as palm, is widely cultivated in tropical regions including Malaysia to remove fats and oils from pulp and seeds. However, oil palm becomes a mature tree, and after a certain period of time, oil and fat productivity falls, so it is cut down and planted into a new tree.
Most of the oil palm trees that have been cut down are either left or incinerated. The reason is that the oil palm part is difficult to use as wood, such as poor dimensional stability, lots of fuzz, easy decay, and low mechanical strength.
Effective utilization of oil palm xylem is particularly significant today, when depletion of timber resources is a serious problem.
本発明は、アブラヤシ木部を原料とし、寸法安定性が良好で、毛羽立ちが無く、腐敗しにくい利用価値の高い改良木材を提供することを目的とする。An object of the present invention is to provide an improved timber having a high utility value that uses oil palm xylem as a raw material, has good dimensional stability, has no fluffing, and does not easily decay.
本発明者は鋭意研究により、アブラヤシ木部にリグニン又はリグニンの変成物を添加して加熱処理することにより、寸法安定性と防腐性が極めて向上することを見出した。 As a result of intensive studies, the present inventor has found that dimensional stability and antiseptic properties are greatly improved by adding lignin or a modified product of lignin to an oil palm xylem and subjecting it to heat treatment.
すなわち本発明は、アブラヤシ木部に、リグニン又はリグニンの変成物が添加され、その後に加熱処理されていることを特徴とする改良木材である。 That is, the present invention is an improved wood characterized in that lignin or a modified product of lignin is added to an oil palm xylem, followed by heat treatment.
また本発明は、アブラヤシ木部に、リグニン又はリグニンの変成物を溶媒に溶解して含浸又は注入した後、加熱処理することを特徴とする改良木材の製造方法でもある。 Moreover, this invention is also a manufacturing method of the improved wood characterized by heat-treating an oil palm xylem | wood part after melt | dissolving a lignin or the modified product of a lignin in a solvent and impregnating or inject | pouring it.
本発明の改良木材に使用されるアブラヤシ木部は、アブラヤシの幹の全ての木部が対象となる。また、アブラヤシの品種としては、ギニアアブラヤシ、アメリカアブラヤシ、それらの交配品種等、ヤシ科アブラヤシ属に分類されるあらゆるものが対象となる。
かかるアブラヤシの木部は、あらかじめ板状、柱状に切削されたものが好ましく、板状がより好ましい。The coconut xylem used in the improved timber of the present invention covers all xylems of the trunk of the oil palm. In addition, the varieties of oil palm are all those classified into the genus oil palm genus such as Guinea oil palm, American oil palm, and their hybrid varieties.
Such an oil palm tree portion is preferably cut into a plate shape or a column shape in advance, and more preferably a plate shape.
次に、本発明の改良木材に使用されるリグニンまたはリグニンの変性物は、針葉樹、広葉樹、草本類等、あらゆる種類のものが対象となるが、特に、稲、麦、竹、さとうきび、アシ等イネ科植物のリグニンまたはリグニンの変性物が好ましい。
かかるリグニンまたはリグニンの変性物は、植物から直接抽出したものであってももちろん良いが、パルプ黒液から抽出したものが工業的に有利である。Next, the lignin or modified lignin used in the improved wood of the present invention covers all kinds of conifers, hardwoods, herbs, etc., but particularly rice, wheat, bamboo, sugarcane, reeds, etc. Gramineous plant lignin or a modified product of lignin is preferred.
Such lignin or a modified product of lignin may of course be extracted directly from plants, but one extracted from pulp black liquor is industrially advantageous.
また本発明の改良木材に使用されるリグニンの変成物は、ソーダリグニン、チオリグニン、リグニンスルホン酸、リグニンスルホン酸塩等あらゆるものが対象となるが、ソーダリグニンとリグニンスルホン酸塩が工業的に有利である。
リグニン又はリグニンの変成物の使用量は、乾燥重量で、アブラヤシ木部に対して０．５〜３０重量％、好ましくは２〜１０重量％である。In addition, the modified lignin used in the improved wood of the present invention includes all kinds of soda lignin, thiolignin, lignin sulfonic acid, lignin sulfonate, etc., but soda lignin and lignin sulfonate are industrially advantageous. It is.
The amount of lignin or lignin metabolite used is 0.5 to 30% by weight, preferably 2 to 10% by weight, based on the oil palm part, in dry weight.
リグニン又はリグニンの変成物をアブラヤシ木部に添加する方法は、リグニン又はリグニンの変成物を溶媒に溶解して含浸または注入する方法が好ましいが、必ずしもそれに限定されない。前期溶媒としては、水、水とメタノールまたはアセトンの混合溶媒が好ましいが、必ずしもそれに限定されずリグニンまたはリグニンの変性物を溶解するあらゆる溶媒が対象となる。
前期含浸する方法としては、アブラヤシ木部を前記リグニンまたはリグニンの変性物を溶解したものに浸漬して含浸させる方法が好ましい。注入する方法としては、圧縮式注入管、真空式注入管等を使用して、リグニンまたはリグニンの変性物を溶解したものをアブラヤシ木部に注入する等があげられる。しかし必ずしもそれに限定されず、リグニン又はリグニンの変成物をアブラヤシ木部の内部に添加するあらゆる方法が対象となる。かかる方法において、リグニン又はリグニンの変成物はアブラヤシ内部に均一に添加されるのが好ましい。The method of adding lignin or a modified product of lignin to the oil palm is preferably impregnated or injected by dissolving the lignin or modified product of lignin in a solvent, but is not necessarily limited thereto. As the initial solvent, water, a mixed solvent of water and methanol or acetone is preferable, but not necessarily limited thereto, and any solvent that dissolves lignin or a modified product of lignin is a target.
As a method of impregnating in the first period, a method of impregnating an oil palm xylem by immersing it in a solution of the lignin or a modified lignin is preferable. As a method of injecting, a compression type injection tube, a vacuum type injection tube, or the like is used to inject lignin or a lignin-modified product into an oil palm xylem. However, the present invention is not necessarily limited thereto, and any method of adding lignin or a modified product of lignin to the inside of an oil palm xylem is an object. In such a method, lignin or a modified product of lignin is preferably added uniformly to the inside of oil palm.
アブラヤシ木部にリグニン又はリグニンの変成物を添加した後、必要により、アブラヤシ木部の水分量を調節する。水分の存在は、リグニン又はリグニンの変成物をアブラヤシ木部の成分との化学反応を促進するので重要である。しかし、水分が多すぎると加熱処理の工程で、効率が悪くなったり、リグニン又はリグニンの変成物が流出したりするので好ましくない。好ましい水分量は使用するアブラヤシ木部の密度、サイズによって差異があるが通常、アブラヤシ木部乾燥重量に対して２０〜１００重量％である。 After adding lignin or a modified product of lignin to the oil palm xylem, the water content of the oil palm xylem is adjusted as necessary. The presence of moisture is important as it promotes chemical reactions of lignin or lignin metabolites with oil palm xylem components. However, too much moisture is not preferable because the efficiency of the heat treatment process deteriorates and lignin or a modified product of lignin flows out. The preferred amount of water varies depending on the density and size of the oil palm xylem used, but is usually 20 to 100% by weight based on the dry weight of the oil palm xylem.
本発明において、アブラヤシ木部にリグニン又はリグニンの変成物を添加し、アブラヤシ木部の水分量を調整した後に、加熱処理が行われる。加熱処理の方法として、熱板上で加熱、電気炉内で加熱、高周波による加熱等、あらゆる方法が対象となる。加熱処理温度は、アブラヤシ木部の温度が１２０〜３００℃になるのが好ましく、１８０〜２３０℃がより好ましい。
表面温度が３００℃を超えると木材が劣化する恐れがある。また、表面温度が１２０℃以下だとリグニン又はリグニンの変成物とアブラヤシの成分が十分に反応しない恐れがある。
また加熱処理時間は、主に目的とする改良木材の厚さと加熱処理方法により異なる。時間の一応の目安は、アブラヤシ木部の内部まで熱が届くまでである。In the present invention, heat treatment is performed after adding lignin or a modified product of lignin to the oil palm tree part and adjusting the water content of the oil palm tree part. As a heat treatment method, all methods such as heating on a hot plate, heating in an electric furnace, heating by high frequency, and the like are targeted. As for heat processing temperature, it is preferable that the temperature of an oil palm tree part becomes 120-300 degreeC, and 180-230 degreeC is more preferable.
If the surface temperature exceeds 300 ° C, the wood may be deteriorated. If the surface temperature is 120 ° C. or lower, lignin or a modified product of lignin and the oil palm component may not sufficiently react.
The heat treatment time varies mainly depending on the thickness of the target improved wood and the heat treatment method. A rough estimate of the time is until the heat reaches the inside of the oil palm.
油ヤシ木部で密度の低いものは一般的に力学的強度も低い。本発明においては、力学的強度を向上させるために、前記過熱処理と同時に加圧してアブラヤシ木部を圧縮した改良木材も対象とする。かかる改良木材は、アブラヤシ木部の元の厚さの４０％を下回らない範囲の厚さに、好ましくは５０％を下回らない範囲の厚さに圧縮したものである。
改良木材の厚さがアブラヤシ木部の元の厚さの４０％を下回ると、形状がゆがみ好ましくない。
かかる改良木材の製法としては、通常のホットプレスを使用すれば良いが、これに限定するものではなく、例えば、蒸気噴射プレス、高周波プレス等を利用しても良い。Oil palm parts having low density generally have low mechanical strength. In this invention, in order to improve mechanical strength, the improved wood which compressed simultaneously with the said overheat processing and compressed the oil palm tree part is also object. Such improved wood has been compressed to a thickness that does not fall below 40% of the original thickness of the oil palm xylem, preferably to a thickness that does not fall below 50%.
When the thickness of the improved wood is less than 40% of the original thickness of the oil palm tree part, the shape is distorted, which is not preferable.
As a method for producing such improved wood, a normal hot press may be used, but is not limited thereto, and for example, a steam injection press, a high frequency press, or the like may be used.
本発明の改良木材は、寸法安定性が優れている。通常、アブラヤシ木部は、水分の吸放出によって形状が変化しやすく、木材としての利用が困難である。本発明の改良木材は、水分の吸放出による形状の変化はほとんど無い。具体的には、本発明の改良木材を２０℃の水に４８時間浸漬した後の吸水厚さ膨張率は、圧縮しないもので５％以下、好ましくは２％以下であり、圧縮させたもので１０％以下、好ましくは５％以下である。 The improved wood of the present invention has excellent dimensional stability. Usually, the shape of an oil palm tree part is likely to change due to moisture absorption and release, and it is difficult to use it as wood. The improved wood of the present invention has almost no change in shape due to moisture absorption / release. Specifically, the water absorption thickness expansion coefficient after immersing the improved wood of the present invention in water at 20 ° C. for 48 hours is 5% or less, preferably 2% or less without compression, and is compressed. It is 10% or less, preferably 5% or less.
また本発明の改良木材は、防腐性が優れている。通常、アブラヤシ木部は水を含んだ状態では数日で腐敗し、又、乾燥したものも放置しておくと吸湿し腐敗する。
本発明の改良木材は、特に腐敗しやすい環境を除けば、水に浸して含水率５０％以上にしたものであっても、空気中に放置すると自然乾燥し、カビも腐敗臭も発生しない。The improved wood of the present invention is excellent in antiseptic properties. Usually, oil palm parts rot in a few days when they contain water, and if they are dried, they will absorb moisture and rot.
Even if the improved wood of the present invention is immersed in water to a moisture content of 50% or more except for an environment that is particularly susceptible to spoilage, it is naturally dried when left in the air, and neither mold nor spoilage odor is generated.
また本発明の改良木材は、表面に毛羽立ちが無い。通常、アブラヤシ木部は表面に毛羽立ちが多く、木材としての利用が困難である。本発明の改良木材は表面にツヤがありなめらかで毛羽立ちが無く、木材としての利用に適している。 The improved wood of the present invention has no fuzz on the surface. Usually, the oil palm tree part has a lot of fluff on the surface and is difficult to use as wood. The improved wood of the present invention has a glossy surface, is smooth and has no fluffing, and is suitable for use as wood.
本発明の改良木材でアブラヤシ木部を圧縮したものは、力学的強度が優れている。通常アブラヤシ木部で、とりわけ気乾密度が０．３５ｇ／ｃｍ３を下回るものはそのままでは力学的強度が低く、木材としての利用が困難である。このようなアブラヤシ木部を圧縮すると、一時的に力学的強度は向上するが吸水して元のアブラヤシ木部の厚さに戻り、力学的強度も落ちてしまう。本発明のアブラヤシ木部を圧縮したものは、寸法安定性が良く、吸水しても元のアブラヤシ木部の厚さに戻らず良好な力学的強度を持続する。
かかる本発明の改良木材の好ましい力学的強度は、用途によって異なるが、例えば曲げ強さで４００ｋｇｆ／ｃｍ２が好ましく、５００ｋｇｆ／ｃｍ２以上がより好ましい。また曲げヤング係数で５０００ｋｇｆ／ｃｍ２以上が好ましく、６０００ｋｇｆ／ｃｍ２以上がより好ましい。
かかる曲げ強さ、曲げヤング係数は、アブラヤシ木部の圧縮率によって調整可能である。What compressed the oil palm part with the improved timber of this invention is excellent in mechanical strength. Usually, oil palm parts having an air-drying density of less than 0.35 g / cm 3 have low mechanical strength and are difficult to use as wood. When such an oil palm tree part is compressed, the mechanical strength is temporarily improved, but water is absorbed to return to the original thickness of the oil palm tree part, and the mechanical strength is also reduced. The compressed oil palm part of the present invention has good dimensional stability and maintains good mechanical strength without returning to the original thickness of the oil palm part even if it absorbs water.
Preferred mechanical strength improvements timber according the present invention varies depending on the application, for example, preferably 400 kgf / cm 2 in bending strength, 500 kgf / cm 2 or more is more preferable. Also preferably 5000 kgf / cm 2 or more in the bending Young's modulus, 6000kgf / cm 2 or more is more preferable.
Such bending strength and bending Young's modulus can be adjusted by the compression ratio of the oil palm tree part.
本発明の改良木材が、優れた性能を発揮する理由は、リグニン又はその変成物をアブラヤシ木部が含有する遊離の糖類及び繊維部分が熱の作用によって化学反応して高分子化して樹脂化するためと考えられる。
アブラヤシ木部が腐敗しやすい主な原因は遊離の糖類であるが、それか樹脂化することによって腐敗しにくくなる。また毛羽立ちする繊維部分も、樹脂化物が結合剤の役割を果たし、平滑な表面となる。The reason why the improved wood of the present invention exhibits excellent performance is that lignin or a modified product thereof is converted into a polymer by free reaction of free sugars and fiber parts contained in the oil palm xylem by the action of heat. This is probably because of this.
The main cause of the spoilage of oil palm parts is free saccharides, but it becomes difficult to rot by converting to resin. In addition, the fluffed fiber portion also has a smooth surface because the resinated material serves as a binder.
本発明によれば次のような効果がある。
（１）本発明の改良木材は、寸法安定性が良好である。
（２）本発明の改良木材は、毛羽立ちがなく表面性が良好である。
（３）本発明の改良木材は、腐敗しにくい。
（４）本発明の改良木材で加熱処理と同時に圧縮したものは、力学的強度が良好である。
（５）本発明の改良木材は、無害なリグニンまたはリグニンの変性物を使用しているので、化学系接着剤や防腐剤と異なり、安全である。
（６）本発明の改良木材は、未利用の木質系資源を有効利用しており、森林資源の保全に役立つ
（７）本発明は、アブラヤシ木部が大量に伐採され焼却され二酸化炭素として放出される現状を改善し、地球温暖化防止に貢献する。
（８）本発明の改良木材の製造方法は、かかる改良木材を効率良く製造する。The present invention has the following effects.
(1) The improved wood of the present invention has good dimensional stability.
(2) The improved wood of the present invention has no surface and good surface properties.
(3) The improved wood of the present invention is less likely to rot.
(4) The mechanical strength of the improved wood of the present invention, which is compressed simultaneously with the heat treatment, is good.
(5) Since the improved wood of the present invention uses harmless lignin or a modified product of lignin, it is safe unlike chemical adhesives and preservatives.
(6) The improved wood of the present invention makes effective use of unused woody resources and is useful for the preservation of forest resources. (7) The present invention is a large amount of oil palm trees cut down, incinerated and released as carbon dioxide. Will contribute to the prevention of global warming.
(8) The method for producing improved wood according to the present invention efficiently produces such improved wood.
次に実施例により本発明を更に詳しく説明するが、本発明はこれによって限定されるものではない。
尚、実施例及び比較例では、油脂がとれなくなったため伐採されたアブラヤシの成木を、強制乾燥した後、たて５ｃｍ、よこ２０ｃｍ、厚さ２ｃｍのサイズに切断したものを試験片として使用した。
また実施例において、アブラヤシ木部にリグニン又はリグニンの変成物を添加する方法は、イネワラのパルプ黒液から抽出したＰＨ１０のソーダリグニンの粉末を水に溶かして１０％濃度の水溶液とし、その水溶液にアブラヤシ木部の試験片を４８時間浸漬する方法を用いた。
また実験例及び比較例において加熱処理のために、電気ヒーターを熱源とするホットプレスを使用した。
また実験例及び比較例で得た改良木材の寸法安定性を調べるために、以下の方法で吸水厚さ膨張率を測定した。すなわち、試験片を２０℃の水の水面下３ｃｍに４８時間浸漬し、吸水後の厚さと吸水前の厚さの差を吸水前の厚さで割った値の百分率を吸水厚さ膨張率とした。EXAMPLES Next, although an Example demonstrates this invention in more detail, this invention is not limited by this.
In the examples and comparative examples, the oil palms that had been cut off because they were no longer able to remove oil were forcibly dried and then cut into a size of 5 cm, 20 cm wide, and 2 cm thick as test pieces. .
Also, in the examples, the method of adding lignin or a lignin modification product to the oil palm xylem is to dissolve soda lignin powder of PH10 extracted from rice black liquor black liquor into water to make a 10% aqueous solution. A method of immersing a test piece of oil palm xylem for 48 hours was used.
In the experimental examples and comparative examples, a hot press using an electric heater as a heat source was used for the heat treatment.
Further, in order to investigate the dimensional stability of the improved wood obtained in the experimental examples and comparative examples, the water absorption thickness expansion coefficient was measured by the following method. That is, the percentage of the value obtained by immersing the test piece in 3 cm below the surface of water at 20 ° C. for 48 hours and dividing the difference between the thickness after water absorption and the thickness before water absorption by the thickness before water absorption is the water absorption thickness expansion coefficient. did.
気乾密度０．４５ｇ／ｃｍ３のアブラヤシ木部の試験片を、前記ソーダリグニン水溶液に浸漬した後取り出し、表面をふいた後乾燥し、アブラヤシ木部の乾燥重量に対する水分量が５０％になるように調節した。
この試験片に添加されたリグニンの量を測定するため、サンプルの一部を完全乾燥し重量を測定した。その重量の増加分をリグニンの添加量とした。本実施例のリグニンの添加はアブラヤシに対して４重量％であった。
次に、電気ヒーターを熱源とするホットプレスを使用し、試験片を圧縮しないようにちょうどプレス機の上面と下面のスペースが、試験片厚さと同じ２ｃｍになるように設定して２３０℃の温度で２０分間加熱処理を行い、本発明の改良木材を得た。
この改良木材の表面は、つやがありなめらかで、アブラヤシ木部のケバは全部消滅していた。また、この改良木材の寸法安定性を調べるために、吸水厚さ膨張率を測定した所０％であった。
次にこの改良木材の腐敗性を調べるために、吸水厚さ膨張率試験で使用した水を吸水した試験片を、気温２０℃、湿度５０％の空気中で１０日間放置した。この試験片は、カビも臭気も発生せず、自然乾燥した。A test piece of an oil palm xylem having an air dry density of 0.45 g / cm 3 is taken out after being immersed in the soda lignin aqueous solution, wiped and dried, and the moisture content with respect to the dry weight of the oil coconut timber is 50%. Adjusted as follows.
In order to measure the amount of lignin added to the test piece, a part of the sample was completely dried and the weight was measured. The increase in weight was taken as the amount of lignin added. The addition of lignin in this example was 4% by weight with respect to oil palm.
Next, using a hot press that uses an electric heater as a heat source, the temperature of 230 ° C. is set so that the space between the upper and lower surfaces of the press machine is the same 2 cm as the thickness of the test piece so as not to compress the test piece. Then, heat treatment was performed for 20 minutes to obtain an improved wood of the present invention.
The surface of this improved timber was smooth and smooth, and all the leaves of the oil palm parts had disappeared. Further, in order to investigate the dimensional stability of this improved wood, the water absorption thickness expansion coefficient was measured and found to be 0%.
Next, in order to investigate the rotability of the improved wood, the test piece that absorbed water used in the water absorption thickness expansion test was left in air at a temperature of 20 ° C. and a humidity of 50% for 10 days. This test piece was naturally dried without generating mold or odor.
実験例１で使用したものと同じ気乾密度０．４５ｇ／ｃｍ３のアブラヤシ木部の試験片を、何の処理もしないで、吸水厚さ膨張率試験を測定した所、６％であった。
次にこの試験片の腐敗性を実施例１と同じ方法で調べた所、試験開始２日後に腐敗臭が出はじめ、その後腐敗がすすみ６日後には形状が崩れるほどに腐敗が進行した。The same water dry density 0.45 g / cm 3 test piece as that used in Experimental Example 1 was subjected to a water absorption thickness expansion coefficient test without any treatment, and it was 6%. .
Next, when the rotability of this test piece was examined by the same method as in Example 1, rot odor started to appear 2 days after the start of the test, and after 6 days after rot, the rot progressed so that the shape collapsed.
気乾密度０．３ｇ／ｃｍ３のアブラヤシ木部の試験片を使用する以外は実施例１と同じ方法で、アブラヤシ木部にリグニンを添加した。
この試験片に添加されたリグニンの量を実施例１と同じ方法で測定した所アブラヤシ木部に対して６重量％であった。
次に、実施例１と同じホットプレスを使用し、１２ｍｍのスペーサを入れて２３０℃の温度で１２分加熱しながら加圧し、厚さ１２ｍｍの改良木材を得た。
この改良木材の表面は、つやがありなめらかで、アブラヤシ木部のケバは全部消滅していた。また、この改良木材の寸法安定性を調べるために、吸水厚さ膨張率を調べた所２％であった。また、この改良木材の曲げ強さは６８０ｋｇｆ／ｃｍ３、曲げヤング係数は７２００ｋｇｆ／ｃｍ３であった。
次にこの改良木材の腐敗性を調べるために、吸水厚さ膨張率試験で使用した水を吸水した試験片を、気温２０℃、湿度５０％の空気中で１０日間放置した。この試験片は、カビも臭気も発生せず、自然乾燥した。Lignin was added to the oil palm xylem in the same manner as in Example 1 except that an oil palm xylem test piece having an air dry density of 0.3 g / cm 3 was used.
The amount of lignin added to this test piece was 6% by weight based on the oil palm xylem measured by the same method as in Example 1.
Next, using the same hot press as in Example 1, a 12 mm spacer was put in and pressurized while heating at a temperature of 230 ° C. for 12 minutes to obtain an improved wood having a thickness of 12 mm.
The surface of this improved timber was smooth and smooth, and all the leaves of the oil palm parts had disappeared. Further, in order to investigate the dimensional stability of the improved wood, the water absorption thickness expansion coefficient was examined and found to be 2%. The improved wood had a bending strength of 680 kgf / cm 3 and a bending Young's modulus of 7200 kgf / cm 3 .
Next, in order to investigate the rotability of the improved wood, the test piece that absorbed water used in the water absorption thickness expansion test was left in air at a temperature of 20 ° C. and a humidity of 50% for 10 days. This test piece was naturally dried without generating mold or odor.
実施例２で使用したものと同じ気乾密度０．３ｇ／ｃｍ３のアブラヤシ木部を使用して、リグニンまたはリグニンの変性物を使用する以外は、実施例２と同じ方法でアブラヤシ木部を圧縮した。
この圧縮したアブラヤシ木部の曲げ強さは５４０ｋｇｆ／ｃｍ２、曲げヤング係数は５２００ｋｇｆ／ｃｍ２であり、また吸水厚さ膨張率は６０％であった。
また、実施例２と同じ方法で腐敗性を調べたところ、試験開始３日後に腐敗臭が出はじめ、その後腐敗がすすみ９日後には木材の形状が崩れるほどに腐敗が進行した。Using the same oil-drying density 0.3 g / cm 3 oil palm xylem as used in Example 2 and using lignin or a modified lignin, the oil xylem is treated in the same manner as in Example 2. Compressed.
The compressed palm tree part had a bending strength of 540 kgf / cm 2 , a bending Young's modulus of 5200 kgf / cm 2 , and a water absorption thickness expansion coefficient of 60%.
Further, when the rotability was examined by the same method as in Example 2, rot odor began to appear 3 days after the start of the test, and after 9 days after rot, the rot progressed so that the shape of the wood collapsed.
本発明の改良木材は、未利用の廃棄木材を有効に活用して、有用な木材原料として使用することができる。 The improved wood of the present invention can be used as a useful wood raw material by effectively utilizing unused waste wood.
Claims (6)
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| JP2014019035A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Oil palm consolidated wood |
| JP2014019029A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Joint composition of oil palm thin board and joining method of the oil palm thin board |
| JP2014019033A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Method for manufacturing laminated plywood |
| JP2014019031A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Laminated plywood |
| JP2014019036A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Oil palm consolidated wood |
| JP2014019030A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Oil palm-consolidated wood |
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| WO2014057582A1 (en) * | 2012-10-12 | 2014-04-17 | マイウッド・ツー株式会社 | Shaped oil-palm body, manufacturing method therefor, and laminated plywood |
| WO2014057583A1 (en) * | 2012-10-12 | 2014-04-17 | マイウッド・ツー株式会社 | Compressed oil-palm material |
| WO2014057581A1 (en) * | 2012-10-12 | 2014-04-17 | マイウッド・ツー株式会社 | Compressed oil-palm material, bonding composition for oil-palm material, method for bonding oil-palm material, laminated plywood, and manufacturing method therefor |
| JP2014124801A (en) * | 2012-12-25 | 2014-07-07 | Mywood 2 Kk | Molded product of plant, and method for molding the product |
| JP2014124800A (en) * | 2012-12-25 | 2014-07-07 | Mywood 2 Kk | Consolidated material with strain removed, and apparatus and method for manufacturing the same |
| JP2014124799A (en) * | 2012-12-25 | 2014-07-07 | Mywood 2 Kk | Compaction material, manufacturing device and manufacturing method thereof |
| JP2015000533A (en) * | 2013-06-17 | 2015-01-05 | マイウッド・ツー株式会社 | Oil palm consolidated plywood |
| CN104786315A (en) * | 2014-09-18 | 2015-07-22 | 梁兆镛 | Modification processing process for oil palm trunk and oil palm board |
| WO2019017762A1 (en) * | 2017-07-17 | 2019-01-24 | Universiti Putra Malaysia | A method of making compreg palm wood |
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| JP2014019029A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Joint composition of oil palm thin board and joining method of the oil palm thin board |
| JP2014019033A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Method for manufacturing laminated plywood |
| JP2014019031A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Laminated plywood |
| JP2014019036A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Oil palm consolidated wood |
| JP2014019030A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Oil palm-consolidated wood |
| JP2014019032A (en) * | 2012-07-17 | 2014-02-03 | Mywood 2 Kk | Production method of laminated plywood |
| WO2014057583A1 (en) * | 2012-10-12 | 2014-04-17 | マイウッド・ツー株式会社 | Compressed oil-palm material |
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| JP2014124800A (en) * | 2012-12-25 | 2014-07-07 | Mywood 2 Kk | Consolidated material with strain removed, and apparatus and method for manufacturing the same |
| JP2014124799A (en) * | 2012-12-25 | 2014-07-07 | Mywood 2 Kk | Compaction material, manufacturing device and manufacturing method thereof |
| JP2015000533A (en) * | 2013-06-17 | 2015-01-05 | マイウッド・ツー株式会社 | Oil palm consolidated plywood |
| CN104786315A (en) * | 2014-09-18 | 2015-07-22 | 梁兆镛 | Modification processing process for oil palm trunk and oil palm board |
| WO2019017762A1 (en) * | 2017-07-17 | 2019-01-24 | Universiti Putra Malaysia | A method of making compreg palm wood |
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