JPH0639811A - Method for preservation of lumber - Google Patents

Method for preservation of lumber

Info

Publication number
JPH0639811A
JPH0639811A JP4199698A JP19969892A JPH0639811A JP H0639811 A JPH0639811 A JP H0639811A JP 4199698 A JP4199698 A JP 4199698A JP 19969892 A JP19969892 A JP 19969892A JP H0639811 A JPH0639811 A JP H0639811A
Authority
JP
Japan
Prior art keywords
carbon dioxide
allyl isothiocyanate
wood
lumber
dioxide gas
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.)
Pending
Application number
JP4199698A
Other languages
Japanese (ja)
Inventor
Kunio Tsunoda
邦夫 角田
Tetsumasa Yamamoto
▲徹▼誠 山本
Hitoshi Imamura
等 今村
Taiji Sekiyama
泰司 関山
Yuichi Mizukami
勇一 水上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Oxygen Co Ltd
Nippon Sanso Corp
Mitsubishi Tanabe Pharma Corp
Original Assignee
Green Cross Corp Japan
Japan Oxygen Co Ltd
Nippon Sanso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Green Cross Corp Japan, Japan Oxygen Co Ltd, Nippon Sanso Corp filed Critical Green Cross Corp Japan
Priority to JP4199698A priority Critical patent/JPH0639811A/en
Publication of JPH0639811A publication Critical patent/JPH0639811A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To achieve preservation for a long period of lumber by preventing it from deteriorating by fungistatic action and pasteurization action which aryl isothiocyanate has by a method wherein liquified carbon dioxide gas containing 0.1-10wt.% of aryl isothiocyanate is introduced by gasifying into a hermetically sealed space containing the lumber. CONSTITUTION:A suitable number of pieces of lumber to be treated are placed on a baseplate 2, covered by an air tight sheet, and bundled with a pressure sensitive adhesive tape 4 to form a space capable of being hermetically sealed. Then, carbon dioxide is accompanied by aryl isothiocyanate, which is introduced into one side ventilation opening 5a by jetting aryl isothiocyanate from a pressureproof container 6 filled with liquified carbon dioxide via a spray nozzle 7. Further, an oxygen analyzer is connected to the other ventilation opening 5b, and oxygen concentration in an outflow gas is measured. When the oxygen concentration is decreased and a state wherein a treating agent is sufficiently introduced into a hermetically sealed space is obtained, the introduction is ended, and both ventilation openings 5a, 5b are hermetically sealed with the pressure sensitive adhesive tape or the like. Thereby the lumber to be treated 1 is prevented from deteriorating by action of aryl isothiocyanate.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、木材の保存方法に関
し、詳しくは、別名アリルカラシ油と呼ばれるイソチオ
シアン酸アリルを用いて木材の劣化を抑制し、木材を長
期間にわたって保存する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preserving wood, and more particularly to a method for preserving wood for a long period of time by using allyl isothiocyanate, which is also known as allyl mustard oil, to suppress deterioration of wood.

【0002】[0002]

【従来の技術】家屋等の建築物に用いられる木材の劣化
の要因としては、白アリ,キクイムシ,カミキリムシ等
による食害や、腐朽菌,表面汚染菌,変色菌等の繁殖に
よる腐朽が挙げられる。
2. Description of the Related Art Factors of deterioration of wood used for buildings such as houses include feeding damage caused by termites, beetles, beetles and the like, and decay caused by propagation of decay fungi, surface contaminating bacteria, discoloration bacteria and the like.

【0003】従来、このような原因による木材の劣化を
防止する手段としては、白アリ防除剤のような木材害虫
防除剤,各種の油剤や乳剤等の処理剤を、刷毛等で木材
に塗布したり、適当な噴霧器を用いて噴霧塗布する方法
が行われていた。
Conventionally, as means for preventing deterioration of wood due to such causes, wood pest control agents such as termite control agents and various oils, emulsions and other treatment agents are applied to wood with a brush or the like. Alternatively, a method of spray application using a suitable sprayer has been performed.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の方法では、塗布や噴霧を均一に行うことが困難であ
り、作業時間も長くかかるだけではなく、対象とする木
材がおかれている状態によって、塗布や噴霧ができない
部分も生じる。
However, in the above-mentioned conventional methods, it is difficult to uniformly apply and spray, and it takes not only a long working time but also depending on the condition that the target wood is placed. , Some parts cannot be applied or sprayed.

【0005】また、大量の処理剤を必要とするだけでは
なく、処理剤や溶媒の種類によっては、木材の表面にシ
ミ等を作り、木材の商品価値を損なうこともあった。さ
らに、水を溶媒として使用するものでは、木材に不要な
水分を与えることになり、かえってカビを発生させる原
因となることもあった。一方、有機溶媒を用いる場合に
は、火災に対する配慮が必要だった。
Further, not only a large amount of treatment agent is required, but also stains or the like may be formed on the surface of the wood depending on the type of the treatment agent and the solvent, thereby deteriorating the commercial value of the wood. Further, when water is used as a solvent, unnecessary moisture is given to the wood, which may cause mold to occur. On the other hand, when using an organic solvent, it was necessary to consider fire.

【0006】そこで本発明は、上記従来の不都合点を解
消して、短時間で、かつ少量の処理剤で十分な効果をあ
げることができる木材の保存方法を提供することを目的
としている。
[0006] Therefore, an object of the present invention is to provide a method for preserving wood which can solve the above-mentioned conventional inconveniences and can bring out sufficient effects in a short time and with a small amount of treating agent.

【0007】[0007]

【課題を解決するための手段】上記した目的を達成する
ため、本発明の木材の保存方法は、木材を収納した密閉
可能な空間内に、イソチオシアン酸アリルを0.1〜1
0重量%含有する液化炭酸ガスを気化して導入すること
を特徴としている。
In order to achieve the above-mentioned object, the method for preserving wood according to the present invention is to use allyl isothiocyanate in an amount of 0.1 to 1 in an airtight space in which wood is stored.
It is characterized in that liquefied carbon dioxide gas containing 0% by weight is vaporized and introduced.

【0008】本発明において、木材の劣化を防止するた
めの処理剤の主成分として用いられる上記イソチオシア
ン酸アリルは、別名アリルカラシ油と呼ばれるもので、
一般に、カラシやワサビ等の原料を水蒸気蒸留によって
抽出するか、あるいはチオシアン酸ソーダと塩化アリル
を蒸留して製造され、主として食品の着香料あるいは医
薬品の原料として利用されている。
In the present invention, the above-mentioned allyl isothiocyanate used as the main component of the treating agent for preventing the deterioration of wood is called as allyl mustard oil.
Generally, it is produced by extracting raw materials such as mustard and horseradish by steam distillation, or by distilling sodium thiocyanate and allyl chloride, and is mainly used as a flavoring agent for foods or a raw material for pharmaceuticals.

【0009】本発明に用いられるイソチオシアン酸アリ
ルは、天然物,合成物を問うものではなく、さらにイソ
チオシアン酸アリル100%からなる単剤に限らず、イ
ソチオシアン酸アリルを含む精油、例えばわさびやカラ
シからの抽出物や粗精製物であってもよい。
The allyl isothiocyanate used in the present invention is not limited to a natural product or a synthetic product, and is not limited to a single agent consisting of 100% allyl isothiocyanate, but an essential oil containing allyl isothiocyanate such as wasabi and mustard. It may be an extract or a crudely purified product.

【0010】上記のように、イソチオシアン酸アリル
は、通常、食品の着香料あるいは医薬品の原料として用
いられているが、本発明では、イソチオシアン酸アリル
の持つ特性から、これを用いて木材の劣化を抑制しよう
とするものである。即ち、本発明者等の知見によれば、
イソチオシアン酸アリルは、これを制菌,殺菌等の目的
に利用した場合、極めて微量のイソチオシアン酸アリル
蒸気の存在下であっても、満足できる効果を得られる。
As described above, allyl isothiocyanate is usually used as a flavoring agent for foods or a raw material for pharmaceuticals. In the present invention, however, due to the characteristics of allyl isothiocyanate, deterioration of wood is caused. It is something that we try to suppress. That is, according to the knowledge of the present inventors,
When allyl isothiocyanate is used for the purpose of sterilization and sterilization, a satisfactory effect can be obtained even in the presence of an extremely small amount of allyl isothiocyanate vapor.

【0011】しかしながら、イソチオシアン酸アリル
は、油状の液体で、特異な刺激臭を有し、かつ引火点が
比較的低いことから、汎用的に利用するためには解決す
べき問題点が多い。例えば、イソチオシアン酸アリルを
木材の劣化防止の目的に使用する場合、これを蒸気化す
る必要があるが、そのための蒸気発生装置が必要とな
る。しかも、この装置は、引火点の低い油を蒸気化する
ので、そのための安全手段が不可欠であるから、必然的
に大型化し、高価なものになる。
However, since allyl isothiocyanate is an oily liquid, has a peculiar irritating odor, and has a relatively low flash point, there are many problems to be solved for general-purpose use. For example, when allyl isothiocyanate is used for the purpose of preventing deterioration of wood, it needs to be vaporized, but a steam generator for that purpose is required. In addition, since this device vaporizes oil having a low flash point, a safety measure for that is essential, so that the device inevitably becomes large and expensive.

【0012】そこで、イソチオシアン酸アリルを容易に
使用できる手段として、スプレー方式の採用が考えられ
るが、通常のスプレー方式では、噴霧用ガスがLPG,
フロン等であるから、これらのガスが持つ物性上や安全
上の点で問題がある。また、これらのガスを用いて噴霧
した場合、形成されるエアロゾルの粒子が比較的大き
く、ミスト状になるので、対象となる木材の表面にしみ
を生じ、また、均一に広い範囲に拡散せず、イソチオシ
アン酸アリルの場合、不都合点が多く採用できない。
Therefore, as a means for easily using allyl isothiocyanate, it is conceivable to adopt a spray method. In the normal spray method, the atomizing gas is LPG,
Since they are CFCs and the like, there are problems in terms of physical properties and safety of these gases. Also, when sprayed using these gases, the particles of the aerosol formed are relatively large and become mist-like, which causes stains on the surface of the target wood and does not spread evenly over a wide range. In the case of allyl isothiocyanate, many disadvantages cannot be adopted.

【0013】そこで、本発明では、上記イソチオシアン
酸アリルを液化炭酸ガス中に混合溶解させて用いる。液
化炭酸ガス中のイソチオシアン酸アリルの含有量は、
0.1〜10重量%が適当であり、この範囲で十分な制
菌,殺菌効果が得られるとともに、かつ着香,刺激臭等
の副次的悪作用が無い。即ち、イソチオシアン酸アリル
が0.1重量%以下の場合は、制菌,殺菌効果が十分得
られないことがあり、イソチオシアン酸アリルが10重
量%以上の場合は、強い刺激臭等の副次的悪作用が生じ
る虞がある。
Therefore, in the present invention, the above allyl isothiocyanate is mixed and dissolved in liquefied carbon dioxide gas before use. The content of allyl isothiocyanate in liquefied carbon dioxide is
0.1 to 10% by weight is suitable, and in this range, sufficient antibacterial and bactericidal effects are obtained, and there are no secondary adverse effects such as flavoring and pungent odor. That is, when allyl isothiocyanate is 0.1% by weight or less, sufficient antibacterial and bactericidal effects may not be obtained, and when allyl isothiocyanate is 10% by weight or more, secondary effects such as strong irritating odor may occur. There may be adverse effects.

【0014】なお、イソチオシアン酸アリルを液化炭酸
ガス中に混合溶解させるには、耐圧容器内に0.1〜1
0重量%に相当するイソチオシアン酸アリルを充填し、
これに99.9〜90重量%に相当する液化炭酸ガスを
充填すればよい。これにより、イソチオシアン酸アリル
を液化炭酸ガス中に均一に溶解させることができる。
To mix and dissolve allyl isothiocyanate in liquefied carbon dioxide, 0.1 to 1
Filled with 0% by weight of allyl isothiocyanate,
This may be filled with liquefied carbon dioxide gas equivalent to 99.9 to 90% by weight. Thereby, allyl isothiocyanate can be uniformly dissolved in liquefied carbon dioxide gas.

【0015】このようにして液化炭酸ガス中に混合溶解
したイソチオシアン酸アリルは、液化炭酸ガスと共に適
宜な蒸発器で蒸発させるだけでイソチオシアン酸アリル
蒸気を得ることができる。また、耐圧容器内の液化炭酸
ガスは、常温で約60〜70kgf/cm2 の圧力を有
しているので、液化炭酸ガスを充填した耐圧容器に適宜
な噴霧手段を接続し、液化炭酸ガスを噴霧用推進剤とし
てイソチオシアン酸アリルを噴霧することにより、微細
なエアロゾルが得られ、これによって効率よくイソチオ
シアン酸アリル蒸気を得ることができる。
The allyl isothiocyanate mixed and dissolved in the liquefied carbon dioxide gas in this way can be obtained by vaporizing allyl isothiocyanate vapor only by evaporating it with a suitable evaporator together with the liquefied carbon dioxide gas. Further, since the liquefied carbon dioxide gas in the pressure resistant container has a pressure of about 60 to 70 kgf / cm 2 at room temperature, an appropriate spraying device is connected to the pressure resistant container filled with the liquefied carbon dioxide gas to remove the liquefied carbon dioxide gas. By spraying allyl isothiocyanate as a propellant for spraying, a fine aerosol can be obtained, whereby allyl isothiocyanate vapor can be efficiently obtained.

【0016】即ち、上記組成の処理剤を噴霧器を介して
噴霧すると、高圧の液化炭酸ガスの圧力により急激に膨
張し、溶解しているイソチオシアン酸アリルが、極めて
微細なエアロゾルになる。このため、空中での滞留時間
が長く、かつ広い範囲に拡散するので、例えば、密閉容
器内の処理物を対象とした場合でも、処理物表面に均一
に接触させることができるし、均一なガス組成を持った
雰囲気を現出できる。また、イソチオシアン酸アリルが
持つ着火性の問題も、不活性な炭酸ガスが同時に噴霧さ
れるので安全である。
That is, when the treating agent having the above composition is sprayed through the sprayer, it is rapidly expanded by the pressure of the high-pressure liquefied carbon dioxide, and the dissolved allyl isothiocyanate becomes an extremely fine aerosol. Therefore, the residence time in the air is long, and since it diffuses in a wide range, for example, even when the object to be processed in a closed container is targeted, it can be uniformly contacted with the surface of the object to be processed, and a uniform gas can be obtained. The atmosphere with composition can be revealed. Also, the problem of ignitability of allyl isothiocyanate is safe because inert carbon dioxide gas is simultaneously sprayed.

【0017】上記のようなイソチオシアン酸アリル含有
液化炭酸ガスからなる処理剤を用いて木材の保存処理を
行うには、被処理木材を密閉可能な空間内に収納し、該
空間内に処理剤蒸気を導入する。
In order to preserve wood by using the above-mentioned treating agent comprising allyl isothiocyanate-containing liquefied carbon dioxide, the treated wood is housed in a sealable space, and the treating agent vapor is stored in the space. To introduce.

【0018】このときの処理剤の導入量は、上記空間内
に処理剤ガスを十分に行き渡らせることができ、該空間
内の空気を排出置換できる量を導入することが望ましい
が、被処理木材の量,空間容積,イソチオシアン酸アリ
ルの含有量等に応じて適宜最適な条件を設定すればよ
い。一般的には、被処理木材を収納した空間内の空間容
積に相当する炭酸ガス量を導入すればよい。
The amount of the treatment agent introduced at this time is preferably such that the treatment agent gas can be sufficiently spread in the space and the air in the space can be discharged and replaced. The optimum conditions may be set appropriately depending on the amount, the space volume, the content of allyl isothiocyanate, and the like. Generally, the amount of carbon dioxide gas corresponding to the volume of the space in which the wood to be treated is stored may be introduced.

【0019】また、イソチオシアン酸アリルを導入後、
前記空間を密封することにより、該空間内をイソチオシ
アン酸アリル蒸気を含む炭酸ガスからなる雰囲気として
おくことができ、この状態で長期保存しておくことがで
きる。なお、完全に密封することが困難な場合や長期保
管を行う場合には、極少量ずつ処理剤を導入するように
してもよい。
After introducing allyl isothiocyanate,
By sealing the space, the space can be kept in an atmosphere of carbon dioxide gas containing allyl isothiocyanate vapor, and can be stored for a long time in this state. When it is difficult to completely seal the container or when it is stored for a long period of time, the treatment agent may be introduced in a very small amount.

【0020】図1は、本発明方法を実施する一例を示す
ものである。まず、適当な本数の被処理木材1を台板2
上に載置して、これを気密性シート3で覆い、粘着テー
プ4で結束して密閉可能な空間を形成する。このとき、
被処理木材1の木口方向両側に、それぞれ通気孔5a,
5bを形成しておくことが好ましい。
FIG. 1 shows an example of implementing the method of the present invention. First, an appropriate number of pieces of wood 1 to be treated is used as a base plate 2
It is placed on top, covered with an airtight sheet 3, and bound with an adhesive tape 4 to form a hermetically sealable space. At this time,
Vents 5a, on both sides of the treated wood 1 in the mouth direction,
It is preferable to form 5b.

【0021】次に、一方の通気孔5aに、前記イソチオ
シアン酸アリル含有液化炭酸ガスを充填した耐圧容器6
を噴霧ノズル7介して接続し、該噴霧ノズル7からイソ
チオシアン酸アリル含有液化炭酸ガスを前記空間内に噴
霧し、イソチオシアン酸アリルを炭酸ガスに同伴させて
通気孔5aから導入する。また、他方の通気孔5bに酸
素分析計(図示せず)を接続し、流出してくるガス中の
酸素濃度を測定することにより、前記密閉空間内の状態
を観測することができる。
Next, a pressure-resistant container 6 in which one vent hole 5a is filled with the liquefied carbon dioxide gas containing allyl isothiocyanate.
Is sprayed through the spray nozzle 7, and the allyl isothiocyanate-containing liquefied carbon dioxide is sprayed from the spray nozzle 7 into the space, and the allyl isothiocyanate is entrained in the carbon dioxide and introduced from the vent hole 5a. Further, by connecting an oxygen analyzer (not shown) to the other vent hole 5b and measuring the oxygen concentration in the gas flowing out, the state in the closed space can be observed.

【0022】そして、上記酸素濃度が低下して密閉空間
内に十分に処理剤が導入された状態になったら、処理剤
の導入を終了するとともに、両通気孔5a,5bを粘着
テープ等で密封する。これにより、被処理木材1は、イ
ソチオシアン酸アリル蒸気及び炭酸ガスが導入された空
間内に封入され、イソチオシアン酸アリルの作用で劣化
が防止される。
When the oxygen concentration decreases and the treatment agent is sufficiently introduced into the closed space, the introduction of the treatment agent is terminated and both vent holes 5a and 5b are sealed with an adhesive tape or the like. To do. As a result, the wood 1 to be treated is sealed in the space into which the allyl isothiocyanate vapor and the carbon dioxide gas are introduced, and deterioration is prevented by the action of allyl isothiocyanate.

【0023】なお、密閉空間の形成方法は任意であり、
例えば、箱体やパイプ,倉庫等でもよいが、上記のよう
に台板2,気密性シート3,粘着テープ4により形成す
ることにより、様々な太さ,長さの木材を効率よく処理
することができ、密封後の取扱いも容易である。
The method for forming the closed space is arbitrary,
For example, it may be a box, a pipe, a warehouse, etc., but by forming the base plate 2, the airtight sheet 3, and the adhesive tape 4 as described above, it is possible to efficiently process wood of various thicknesses and lengths. It is easy to handle after sealing.

【0024】さらに、上記のように、被処理木材1の長
手方向の一方から他方に処理剤ガスを流通させることに
より、空間内の空気を排出して処理剤ガスを空間内に十
分に充満させることができる。しかも、出口側で酸素等
の空気成分を分析することにより、空間内の処理剤濃度
を必要十分な範囲にすることができ、多数の木材を処理
する場合でも、各密閉空間内の状態を略均一にできる。
Further, as described above, the treating agent gas is circulated from one longitudinal direction of the treated wood 1 to the other, whereby the air in the space is discharged and the treating agent gas is sufficiently filled in the space. be able to. Moreover, by analyzing air components such as oxygen at the outlet side, the concentration of the treatment agent in the space can be adjusted to a necessary and sufficient range, and even when processing a large number of wood, the state in each closed space can be roughly Can be uniform.

【0025】[0025]

【実施例】次に、本発明の実施例を説明する。 製造例 まず、容量3リットルの耐圧容器に、充填される液化炭
酸ガスに対して、0.1〜10重量%のイソチオシアン
酸アリルを充填する。この充填量は、後に液化炭酸ガス
を加圧充填した時の重量から換算して容易に求められ
る。
EXAMPLES Next, examples of the present invention will be described. Production Example First, a pressure-resistant container having a capacity of 3 liters is filled with 0.1 to 10% by weight of allyl isothiocyanate with respect to the liquefied carbon dioxide gas to be filled. This filling amount can be easily obtained by converting it from the weight when liquefied carbon dioxide gas is filled under pressure.

【0026】次に、0.1〜10重量%に相当するイソ
チオシアン酸アリルを充填した耐圧容器に、液化炭酸ガ
スを充填する。この液化炭酸ガスが、一般に液体状態を
保持するためには、例えば、−20℃の温度で約20k
gf/cm2 以上の圧力、0℃で約35kgf/cm2
以上、15℃で約52kgf/cm2 以上、30℃で約
73kgf/cm2 以上の圧力を必要とする。また、液
化炭酸ガスを充填する際の温度に対応する圧力以上で耐
圧容器に充填すると、充填後に温度が変化すると圧力も
同時に変化して液体状態を保持する。
Next, a pressure vessel filled with 0.1 to 10% by weight of allyl isothiocyanate is filled with liquefied carbon dioxide gas. This liquefied carbon dioxide gas generally has a liquid state of, for example, about 20 k at a temperature of −20 ° C.
gf / cm 2 or more pressure about at 0 ℃ 35kgf / cm 2
As described above, a pressure of about 52 kgf / cm 2 or more at 15 ° C. and about 73 kgf / cm 2 or more at 30 ° C. is required. Further, when the pressure vessel is filled with a pressure equal to or higher than the pressure corresponding to the temperature at which the liquefied carbon dioxide gas is filled, when the temperature changes after the filling, the pressure also changes at the same time to maintain the liquid state.

【0027】したがって、液化炭酸ガスは、通常約−2
0℃の温度で約20kgf/cm2で、断熱容器に貯蔵
されているので、−20℃の温度を維持しながら、0.
1〜10重量%に相当するイソチオシアン酸アリルを充
填した耐圧容器内に、温度−20℃,圧力約20kgf
/cm2 で、所定量の液化炭酸ガスを充填する。この耐
圧容器を室温下、例えば20℃に放置すれば、約60k
gf/cm2 の圧力となり、また約28℃に放置すれ
ば、約70kgf/cm2 の圧力となり、液化炭酸ガス
は、液体状態を保持した加圧充填状態となる。
Therefore, the liquefied carbon dioxide gas is usually about -2.
Since it is stored in an adiabatic container at a temperature of 0 ° C. of about 20 kgf / cm 2 , it is possible to maintain the temperature of −20 ° C.
In a pressure-resistant container filled with 1-10% by weight of allyl isothiocyanate, the temperature was -20 ° C and the pressure was about 20 kgf.
/ Cm 2 is filled with a predetermined amount of liquefied carbon dioxide gas. If this pressure container is left at room temperature, for example, at 20 ° C, it will be about 60k
The pressure is gf / cm 2 , and when left at about 28 ° C., the pressure is about 70 kgf / cm 2 , and the liquefied carbon dioxide gas is in a pressurized filling state in which the liquid state is maintained.

【0028】また、−20℃,約20kgf/cm2
断熱容器に貯蔵されている液化炭酸ガスを、所定量のア
リルカラシ油を充填した耐圧容器内に、例えば、約28
℃の温度下で、低温液化ガス用ポンプにより充填する場
合には、約28℃で液化炭酸ガスを液体状態に保持でき
る約70kgf/cm2 の圧力まで加圧充填すればよ
い。
Further, the liquefied carbon dioxide gas stored in an adiabatic container at −20 ° C. and about 20 kgf / cm 2 is placed in a pressure resistant container filled with a predetermined amount of allyl mustard oil, for example, about 28
In the case of filling with a low temperature liquefied gas pump at a temperature of ℃, it may be pressurized and filled up to a pressure of about 70 kgf / cm 2 at which a liquefied carbon dioxide gas can be kept in a liquid state at about 28 ° C.

【0029】このようにして、0.1〜10重量%のア
リルカラシ油と、99.9〜90重量%の液化炭酸ガス
の組成でなるイソチオシアン酸アリル噴霧剤が得られ
る。本発明者等は、以上の操作によりイソチオシアン酸
アリルを1.4重量%溶解した液化炭酸ガスからなる処
理剤を製造した。
Thus, an allyl isothiocyanate propellant having a composition of 0.1 to 10% by weight of allyl mustard oil and 99.9 to 90% by weight of liquefied carbon dioxide gas is obtained. The present inventors produced a treating agent composed of liquefied carbon dioxide gas in which 1.4% by weight of allyl isothiocyanate was dissolved by the above operation.

【0030】実施例 製材直後のアカマツ材(10×2×100cm)を用
い、一条件30枚の試験材を桟木を挿入しながら、5列
6段に平積みし、図1に示すようにして気密性シートで
覆った。処理は、次の3条件で行い、2か月経過後に気
密性シートを開封して木材表面上のカビ及び腐朽菌の発
生状態を観察した。
Example Using red pine wood (10 × 2 × 100 cm) immediately after sawing, 30 pieces of test material under one condition were flatly stacked in 5 rows and 6 stages while inserting a pier, and as shown in FIG. Covered with an airtight sheet. The treatment was performed under the following three conditions, and after 2 months, the airtight sheet was opened and the generation state of mold and decay fungi on the surface of the wood was observed.

【0031】サンプル イソチオシアン酸アリル含有
炭酸ガスにて処理したもの 前記のように、気密性シートの一方の通気孔から前記製
造例で製造したイソチオシアン酸アリルを1.4重量%
溶解した液化炭酸ガスからなる処理剤を減圧気化させて
導入し、他方の通気孔から排出されるガス中の酸素濃度
が10体積%になるまで処理剤の導入を続けた。処理剤
の導入を終えた後、両通気孔を密封した。 サンプル 炭酸ガス処理 イソチオシアン酸アリルを含まない液化炭酸ガスを用い
た以外は、サンプルと同様に操作を行い、気密性シー
ト内に炭酸ガスを導入した。 サンプル 無処理 炭酸ガス等の導入を行わず、そのまま密封した。
Sample treated with carbonic acid gas containing allyl isothiocyanate As described above, 1.4% by weight of allyl isothiocyanate produced in the above Production Example from one vent hole of the airtight sheet.
A treatment agent composed of dissolved liquefied carbon dioxide gas was vaporized under reduced pressure and introduced, and the treatment agent was continuously introduced until the oxygen concentration in the gas discharged from the other vent was 10% by volume. After the introduction of the treatment agent was completed, both vent holes were sealed. Sample Carbon Dioxide Gas Treatment Carbon dioxide gas was introduced into the airtight sheet in the same manner as the sample except that liquefied carbon dioxide gas containing no allyl isothiocyanate was used. No sample treatment Without introducing carbon dioxide, etc., the sample was sealed as it was.

【0032】開封後の評価基準は、次の通りである。 評価値 カビ,菌の生育状況 0 カビ,菌の生育が全くない 1 カビ,菌の生育が材表面積の10%未満 2 カビ,菌の生育が材表面積の10%以上25%未満 3 カビ,菌の生育が材表面積の25%以上50%未満 4 カビ,菌の生育が材表面積の50%以上The evaluation criteria after opening are as follows. Evaluation value Mold, fungus growth 0 Mold, no fungus growth 1 Mold, fungus growth is less than 10% of material surface area 2 Mold, fungus growth is 10% to less than 25% of material surface area 3 Mold, fungus 25% or more and less than 50% of the surface area of wood 4 Molds and fungi grow 50% or more of the surface area of wood

【0033】保存開始2か月後に開封した各試験材の評
価値の平均値を以下に示す。
The average value of the evaluation values of each test material opened 2 months after the start of storage is shown below.

【0034】上記のように、イソチオシアン酸アリル含
有液化炭酸ガスからなる処理剤で処理したものは、他の
サンプルに比べてカビ,腐朽菌の生育が少なく、イソチ
オシアン酸アリルによる防カビ,防菌の効果が認められ
た。
As described above, those treated with the treating agent comprising allyl isothiocyanate-containing liquefied carbon dioxide had less growth of mold and decay fungi than other samples, and were mildew-proof and bactericidal with allyl isothiocyanate. The effect was recognized.

【0035】[0035]

【発明の効果】以上説明したように、本発明の木材の保
存方法は、イソチオシアン酸アリルを0.1〜10重量
%含有する液化炭酸ガスを気化して木材を収納した密閉
空間内に導入するので、イソチオシアン酸アリルを効率
よく、かつ安全に蒸気化して使用することができ、イソ
チオシアン酸アリルが有する制菌,殺菌作用で木材の劣
化を防止し、長期保存を図ることができる。
As described above, in the method for preserving wood according to the present invention, liquefied carbon dioxide containing 0.1 to 10% by weight of allyl isothiocyanate is vaporized and introduced into the closed space containing the wood. Therefore, allyl isothiocyanate can be efficiently and safely vaporized and used, and the sterilization and bactericidal action of allyl isothiocyanate can prevent deterioration of wood and achieve long-term storage.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明方法を実施する一例を示す説明図であ
る。
FIG. 1 is an explanatory diagram showing an example of implementing the method of the present invention.

【符号の説明】[Explanation of symbols]

1…被処理木材 2…台板 3…気密性シート
4…粘着テープ 5a,5b…通気孔 6…耐圧容器 7…噴霧ノズ
1 ... Wood to be treated 2 ... Base plate 3 ... Airtight sheet
4 ... Adhesive tape 5a, 5b ... Vent hole 6 ... Pressure resistant container 7 ... Spray nozzle

───────────────────────────────────────────────────── フロントページの続き (72)発明者 今村 等 神奈川県川崎市幸区塚越4−320 日本酸 素株式会社内 (72)発明者 関山 泰司 大阪府大阪市城東区中央1丁目1番47号 株式会社ミドリ十字内 (72)発明者 水上 勇一 大阪府大阪市城東区中央1丁目1番47号 株式会社ミドリ十字内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Imamura, et al. 4-320 Tsukagoshi, Sachi-ku, Kawasaki-shi, Kanagawa Nihon Oxygen Co., Ltd. (72) Inventor, Taiji Sekiyama, 1-147 Chuo-ku, Osaka-shi, Osaka Midori Cross Co., Ltd. (72) Inventor Yuichi Minakami 1-47 Chuo-ku, Osaka City, Osaka Prefecture

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 木材を収納した密閉可能な空間内に、イ
ソチオシアン酸アリルを0.1〜10重量%含有する液
化炭酸ガスを気化して導入することを特徴とする木材の
保存方法。
1. A method for preserving wood, characterized in that a liquefied carbon dioxide gas containing 0.1 to 10% by weight of allyl isothiocyanate is vaporized and introduced into a hermetically sealed space containing wood.
JP4199698A 1992-07-27 1992-07-27 Method for preservation of lumber Pending JPH0639811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4199698A JPH0639811A (en) 1992-07-27 1992-07-27 Method for preservation of lumber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4199698A JPH0639811A (en) 1992-07-27 1992-07-27 Method for preservation of lumber

Publications (1)

Publication Number Publication Date
JPH0639811A true JPH0639811A (en) 1994-02-15

Family

ID=16412130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4199698A Pending JPH0639811A (en) 1992-07-27 1992-07-27 Method for preservation of lumber

Country Status (1)

Country Link
JP (1) JPH0639811A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2803485A1 (en) * 2000-01-10 2001-07-13 Lorraine Prevention Prot Incen Treatment of tree trunk to prevent deterioration after felling by covering with PVC sleeve and inserting frozen carbon dioxide after extracting air
US6830727B1 (en) * 1996-12-19 2004-12-14 Technische Universitaet Dresden Method for stocking and preserving green round wood and sawn timber
WO2006066308A1 (en) * 2004-12-24 2006-06-29 Commonwealth Scientific And Industrial Research Organisation Pesticide compositions and methods

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6830727B1 (en) * 1996-12-19 2004-12-14 Technische Universitaet Dresden Method for stocking and preserving green round wood and sawn timber
FR2803485A1 (en) * 2000-01-10 2001-07-13 Lorraine Prevention Prot Incen Treatment of tree trunk to prevent deterioration after felling by covering with PVC sleeve and inserting frozen carbon dioxide after extracting air
WO2006066308A1 (en) * 2004-12-24 2006-06-29 Commonwealth Scientific And Industrial Research Organisation Pesticide compositions and methods
US8278352B2 (en) 2004-12-24 2012-10-02 Commonwealth Scientific & Industrial Research Organisation Pesticide compositions and methods

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