JPH0857812A - Method for treating water exposure organic remains for storage - Google Patents
Method for treating water exposure organic remains for storageInfo
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- JPH0857812A JPH0857812A JP22240994A JP22240994A JPH0857812A JP H0857812 A JPH0857812 A JP H0857812A JP 22240994 A JP22240994 A JP 22240994A JP 22240994 A JP22240994 A JP 22240994A JP H0857812 A JPH0857812 A JP H0857812A
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- water
- sugar
- temperature
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- alcohol
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、遺跡から出土した水
浸有機遺物の保存処理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 preserving water-immersed organic remains excavated from ruins.
【０００２】[0002]
【従来の技術】遺跡から発見される水浸有機遺物、特に
木材は、土に埋まるまでの間に細胞組織が微生物によっ
て分解され弱くなっている。これは木材の主成分である
セルロースやヘミセルロースを構成する多糖類が微生物
によって分解され、著しく減少した結果である。脆く弱
くなった出土の水浸有機遺物は過剰な水分を含み、その
まま乾燥すると、著しく収縮して文化財としての価値を
失ってしまう。2. Description of the Related Art Water-immersed organic relics, especially wood, found in archaeological sites are weakened by the decomposition of cell tissues by microorganisms before being buried in soil. This is a result of the fact that the polysaccharides constituting cellulose and hemicellulose, which are the main components of wood, are decomposed by microorganisms and significantly reduced. The brittle and weakened excavated water remnants of organic matter contain excess water, and if dried as it is, it contracts significantly and loses its value as a cultural property.
【０００３】そこで、脆弱な水浸有機遺物を強化しなが
ら乾燥させる保存方法としては、従来、水溶性の高分子
材料例えばポリエチレングリコール（ＰＥＧ＃４００
０）や、蔗糖（Ｓｕｃｏｓｅ）の水溶液に水浸有機遺物
を含浸させて強化させる方法、あるいは、木材中の水分
を有機溶剤に置換した後、高級アルコールやポリエチレ
ングリコールを含浸させて強化させる方法がある。Therefore, as a storage method for drying a fragile water-immersed organic matter while strengthening it, a water-soluble polymer material such as polyethylene glycol (PEG # 400) has hitherto been used.
0), a method of impregnating an aqueous solution of sucrose with a water-immersed organic relic to strengthen it, or a method of substituting water in wood with an organic solvent and then impregnating it with a higher alcohol or polyethylene glycol. is there.
【０００４】[0004]
【発明が解決しようとする課題】従来の高分子材料例え
ばポリエチレングリコールを含浸させる方法では、加熱
装置を長期間運転しなければならず、また、高分子の分
解によって、水浸有機遺物が劣化すること、加熱装置が
腐蝕すること、水浸有機遺物の内部まで十分に浸透しな
いなどの欠点がある。また、有機溶剤を使用する方法で
は、火気や安全性に対する欠点がある。In the conventional method of impregnating a polymer material such as polyethylene glycol, the heating device must be operated for a long period of time, and the decomposition of the polymer deteriorates the water-immersed organic relics. However, there are drawbacks such as corrosion of the heating device and insufficient penetration of the inside of the water-immersed organic relics. Further, the method using an organic solvent has drawbacks such as fire and safety.
【０００５】従来の蔗糖を含浸させる方法は、脆弱な水
浸有機遺物を十分に強化できないこと、加熱処理中に分
解して褐色変化を起こすこと、高湿度環境では蔗糖が溶
解すること、生物による分解のおそれがある等の欠点が
ある。The conventional method of impregnating sucrose is that fragile water-immersed organic relics cannot be sufficiently strengthened, decomposes during heat treatment to cause browning, sucrose dissolves in a high humidity environment, and There are drawbacks such as the possibility of decomposition.
【０００６】従来の上記いずれかの方法も、保存処理に
は年単位の長期間の処理期間が必要であり、大規模な設
備が必要で、経費が嵩み、最近の発掘量に対応し難い欠
点がある。[0006] In any of the above-mentioned conventional methods, a long-term processing period of a year is required for preservation processing, large-scale equipment is required, cost is high, and it is difficult to cope with recent excavation amounts. There are drawbacks.
【０００７】この発明は、従来の上記欠点を改善し、含
浸濃度を温度でコントロールでき、従来に比べて簡単な
装置で処理期間を短縮し、微生物に侵されにくく、高温
多湿の環境でも安定して保存でき、脆弱な水浸有機遺物
を寸法安定性を保って十分強化できる水浸有機遺物の保
存処理方法を提供することを目的とする。The present invention improves the above-mentioned drawbacks of the prior art, controls the impregnation concentration by temperature, shortens the treatment period with a simpler device than before, is less susceptible to microorganisms, and is stable in hot and humid environments. It is an object of the present invention to provide a method for preserving water-immersed organic relics, which can be preserved by storing the fragile water-soluble organic relics and can be reinforced sufficiently while maintaining dimensional stability.
【０００８】[0008]
【課題を解決するための手段】水浸有機遺物を糖アルコ
ールの飽和水溶液に浸漬させ、前記飽和水溶液の温度を
室温から順次６０乃至８０℃まで上昇させて、糖アルコ
ールを水浸有機遺物に含浸させ、その後水浸有機遺物を
前記飽和水溶液より取り出して自然乾燥、または凍結乾
燥させる。糖アルコールの飽和水溶液が、その温度上昇
によるも常に糖アルコールの飽和状態を維持するよう
に、当初糖アルコールを過剰に投入するのが好ましい。Means for Solving the Problems The water-immersed organic relic is immersed in a saturated aqueous solution of sugar alcohol, and the temperature of the saturated aqueous solution is gradually increased from room temperature to 60 to 80 ° C. to impregnate the water-immersed organic relic with the sugar alcohol. After that, the water-immersed organic relic is taken out from the saturated aqueous solution and naturally dried or freeze-dried. It is preferable to initially add the sugar alcohol in excess so that the saturated aqueous solution of the sugar alcohol always maintains the saturated state of the sugar alcohol even if the temperature rises.
【０００９】[0009]
【作用】飽和水溶液の温度上昇により、糖アルコールの
濃度が高まり、水浸有機遺物内への糖アルコールの浸透
を促進する。糖アルコールを含浸した水浸有機遺物の乾
燥により、水分が除去され、糖アルコールが結晶する。
水浸有機遺物に含浸して結晶した糖アルコールは、水浸
有機遺物の寸法を安定させ、微生物からの腐朽を防止
し、吸湿性が小さいので、高湿度環境でも水浸有機遺物
を安定させる。[Function] By increasing the temperature of the saturated aqueous solution, the concentration of the sugar alcohol is increased, and the penetration of the sugar alcohol into the water-immersed organic remains is promoted. By drying the water-immersed organic remnant impregnated with sugar alcohol, water is removed and sugar alcohol crystallizes.
The sugar alcohol crystallized by impregnating the water-immersed organic relics stabilizes the dimensions of the water-immersed organic remnants, prevents decay from microorganisms, and has a low hygroscopicity, and thus stabilizes the water-immersed organic relics.
【００１０】[0010]
【実施例】一般に水浸有機遺物の保存処理剤としては次
の条件を満足させることが必要である。 水に対する溶解性が高いこと 脆弱な有機遺物の組織を強化できること（結晶性） 有機遺物の組織に浸透出来るほど分子量が小さいこ
と 熱に対する安定性が高いこと 生物に対して非腐朽性であること 吸湿性が小さく高湿度条件でも安定であること。EXAMPLES Generally, it is necessary for a preservative for water-immersed organic remnants to satisfy the following conditions. High solubility in water Capable of strengthening the structure of fragile organic relics (Crystallinity) Small molecular weight so that it can penetrate into the structure of organic relics High heat stability Non-decomposing to organisms Moisture absorption It has low properties and is stable under high humidity conditions.
【００１１】従来の保存処理剤および糖アルコールの上
記条件を比較したものを表１に示す。Table 1 shows a comparison of the above-mentioned conditions of the conventional preservative and sugar alcohol.
【００１２】[0012]
【表１】 [Table 1]
【００１３】脆弱な木製品を強化するには高濃度水溶液
を木材内部に含浸させる必要がある。そこで表２に糖類
とＰＥＧの水に対する溶解性を示す。ＰＥＧは任意の割
合で水と混合するが、天然の糖では蔗糖が７０℃に加熱
すれば７６％まで溶解する。これに対して糖アルコール
であるキシリトール（Ｘｙｌｉｔｏｌ）は８７％、ラク
チュロース（Ｌａｃｔｕｌｏｓｅ）は８５％、マルチト
ールは（Ｍａｌｔｉｔｏｌ）８０％まで溶解する。In order to strengthen fragile wood products, it is necessary to impregnate the interior of wood with a highly concentrated aqueous solution. Therefore, Table 2 shows the solubility of saccharides and PEG in water. PEG is mixed with water at an arbitrary ratio, but with natural sugar, sucrose dissolves up to 76% when heated to 70 ° C. On the other hand, the sugar alcohols xylitol (Xylitol) dissolves up to 87%, lactulose (Lactulose) up to 85%, and maltitol up to (Maltitol) up to 80%.
【００１４】[0014]
【表２】 [Table 2]
【００１５】保存処理後の木製品の高湿度条件における
安定性は、我が国のような高温多湿の地域においては重
要な問題である。従来からしばしば問題とさているよう
に、高湿度環境でのＰＥＧの吸湿や溶解を考慮すると、
ＰＥＧよりも吸湿性が少ない材料を選択する必要があ
る。表３に示すように、一定湿度における水分の増加量
から推定した糖類とＰＥＧの吸湿度から臨界比湿度を推
定すると、ＰＥＧ＃４０００の８０％前後に対して、蔗
糖は８０％前後、糖アルコールのキシリトールは約６０
％であるが、マルチトールは８５％前後、ラクチュロー
スは約９０％と吸湿性が極めて低い。The stability of wood products after storage treatment under high humidity conditions is an important issue in hot and humid regions such as Japan. Considering moisture absorption and dissolution of PEG in a high humidity environment, which has often been a problem in the past,
It is necessary to select a material that is less hygroscopic than PEG. As shown in Table 3, when the critical specific humidity was estimated from the moisture absorption of saccharides and PEG estimated from the increase in water content at constant humidity, PEG # 4000 was around 80%, sucrose was around 80%, and sugar alcohol was around. Xylitol is about 60
%, Maltitol has an extremely low hygroscopicity of about 85% and lactulose of about 90%.
【００１６】[0016]
【表３】 [Table 3]
【００１７】以上のように、ＰＥＧ（＃２００，＃４０
００）や蔗糖とキシリトール、ラクチュロース、マルチ
トールなどの糖アルコールを比較すると、従来の保存材
料であるＰＥＧ＃４０００は浸透性、熱安定性、色変
化、吸湿性に問題があり、ＰＥＧ＃２００は浸透性は高
いものの色変化や吸湿性にＰＥＧ＃４０００以上の問題
がある。また、蔗糖は多くの点でＰＥＧよりも有利であ
るが、非腐朽性と吸湿性に問題がある。これに対して各
種の糖アルコールは、従来使用されてきたポリエチレン
グリコール（（ＰＥＧ＃４０００）や蔗糖と比較して、
水に対する溶解度や含浸作業中の熱安定性、保管中の高
湿度条件における安定性など、出土有機遺物の保存処理
材料として極めて有効であることが判明した。また、糖
アルコールは蔗糖に比較して生物に侵されにくい性質を
持つことも重要である。このような比較から糖アルコー
ルは出土有機遺物の保存処理材料として有効である。特
に、ラクチトールとマルチトールは上記諸条件において
優れており、水浸有機遺物の保存処理材料として理想的
な素材であると考えられる。なお、ラクチトールとマル
チトールは水浸有機遺物の保存処理材料として従来使用
されたことのない新素材である。As described above, PEG (# 200, # 40
00) or sucrose and sugar alcohols such as xylitol, lactulose, and maltitol, PEG # 4000, which is a conventional storage material, has problems in permeability, heat stability, color change, and hygroscopicity, and PEG # 200 Although it has high penetrability, it has problems with PEG # 4000 or higher in color change and hygroscopicity. In addition, sucrose is advantageous over PEG in many respects, but has problems of non-decayability and hygroscopicity. On the other hand, various sugar alcohols are compared with polyethylene glycol ((PEG # 4000) and sucrose which have been conventionally used,
It was found to be extremely effective as a preservative material for excavated organic relics, such as its solubility in water, thermal stability during impregnation, and stability under high humidity conditions during storage. It is also important that sugar alcohol has the property of being less susceptible to being invaded by organisms than sucrose. From such comparison, sugar alcohol is effective as a material for preserving excavated organic relics. In particular, lactitol and maltitol are excellent under the above conditions, and are considered to be ideal materials for preserving water-immersed organic remains. Lactitol and maltitol are new materials that have never been used as preservatives for waterlogged organic relics.
【００１８】そこで、水浸有機遺物を糖アルコール、好
ましくはラクチトールまたはマルチトールの飽和水溶液
に浸漬させる。Therefore, the water-immersed organic relic is immersed in a saturated aqueous solution of sugar alcohol, preferably lactitol or maltitol.
【００１９】液温を順次上昇させて６０〜８０℃にし、
液温の上昇により飽和水溶液の温度を上昇させる。The liquid temperature is gradually increased to 60 to 80 ° C.,
The temperature of the saturated aqueous solution is raised by raising the liquid temperature.
【００２０】糖アルコールの飽和水溶液は、液温の上昇
に伴って濃度も上がるように、糖アルコールを過剰に投
入しておくのが好ましい。The saturated aqueous solution of sugar alcohol is preferably charged with an excess amount of sugar alcohol so that the concentration thereof increases as the liquid temperature rises.
【００２１】水浸有機遺物の上記浸漬期間は、水浸有機
遺物の大きさによって異なるが３日乃至３ヵ月浸漬させ
る。The immersion period of the water-immersed organic remains depends on the size of the water-immersed organic remains, but is immersed for 3 days to 3 months.
【００２２】糖アルコールを含浸した水浸有機遺物を飽
和水溶液より取り出して乾燥させる。乾燥方法は室内に
放置して自然乾燥させる。糖アルコールの含浸濃度が低
い場合には、凍結乾燥させるのが好ましい。The water-immersed organic remains impregnated with sugar alcohol are taken out from the saturated aqueous solution and dried. The method of drying is to leave it indoors to dry naturally. When the impregnation concentration of sugar alcohol is low, it is preferable to freeze-dry.
【００２３】[0023]
【実験結果】水浸有機遺物の中でも保存処理がもっとも
困難な腐朽の進んだ縄文時代（３０００年前）の広葉樹
を試料として保存処理の効果を測定した。その実験結果
は表４の通りである。[Experimental results] The effects of preservative treatment were measured using a sample of broad-leaved trees from the decayed Jomon period (3000 years ago), which is the most difficult to preserve among the waterlogged organic relics. The experimental results are shown in Table 4.
【００２４】[0024]
【表４】 [Table 4]
【００２５】劣化した広葉樹の例としてケヤキを用い、
木口面収縮率（βｃｓ木口面積）による寸法安定性の変
化の実験をした結果を表５に示し、その収縮状況を写真
１に示す。劣化したケヤキ（飽和含水率＝６１９％、収
縮率βｒａｄ（放射方向）＝２５. ００，βｔａｎ（接
線方向）＝６９．３０，βｃｓ（木口面積）＝７６．９
８）を用いた実験では、蔗糖含浸材は９％含浸の段階で
は、ほとんど寸法安定効果が認められないが、それ以後
はほぼ直線的に木口面収縮率が減少する傾向にある。８
０．８％含浸時の収縮率はβｒａｄ＝０．６５，βｔａ
ｎ＝２．９８，βｃｓ＝３．６２となり、過飽和の状態
で濃度を高めた８９％含浸時の収縮率は、更に上昇して
木口面収縮率が０．９１％となった。ＰＥＧ＃４０００
は９％含浸の段階では、三種類の薬品の内で最も良好な
結果を示したが、２３．１％から５４．５％の濃度上昇
段階では、逆に最も悪い結果になる。しかし、それ以上
の高濃度になると再び寸法安定性は向上し、７０．５
％、８０．８％、９２％ではラクチュロースと並んで良
好な結果を示す。ラクチュロースは、含浸濃度の上昇と
共に緩やかな曲線を描きながら寸法安定性が向上する。
この曲線は蔗糖とほぼ平行しているが、常にラクチュロ
ースの寸法安定性が蔗糖より勝っている。８９％の含浸
濃度における収縮率はβｒａｄ＝０．２９，βｔａｎ＝
−０．７５，βｃｓ＝−１．０４となり、βｒａｄには
ほとんど無収縮であり、βｔａｎにわずかに膨張する傾
向が見られる。Using zelkova as an example of degraded hardwood,
Table 5 shows the results of an experiment on the change in dimensional stability depending on the shrinkage rate of the cusp surface (βcs cusp area), and the contraction state is shown in Photo 1. Degraded zelkova (saturated water content = 619%, shrinkage ratio βrad (radial direction) = 25.00, βtan (tangential direction) = 69.30, βcs (tree mouth area) = 76.9
In the experiment using 8), the sucrose-impregnated material showed almost no dimensional stabilizing effect at the stage of impregnation with 9%, but thereafter, the shrinkage rate of the wood surface tends to decrease almost linearly. 8
Shrinkage rate when impregnated with 0.8% is βrad = 0.65, βta
Since n = 2.98 and βcs = 3.62, the shrinkage rate at the time of 89% impregnation in which the concentration was increased in the supersaturated state further increased, and the shrinkage rate on the cusp surface became 0.91%. PEG # 4000
Shows the best result among the three kinds of chemicals at the 9% impregnation stage, but the worst result at the concentration increasing stage from 23.1% to 54.5%. However, at higher concentrations, the dimensional stability improved again,
%, 80.8% and 92% show good results along with lactulose. Lactulose improves dimensional stability while drawing a gentle curve as the impregnation concentration increases.
This curve is almost parallel to sucrose, but the dimensional stability of lactulose is always superior to that of sucrose. The shrinkage ratio at the impregnation concentration of 89% is βrad = 0.29, βtan =
Since −0.75 and βcs = −1.04, βrad has almost no contraction, and βtan tends to slightly expand.
【００２６】[0026]
【表５】 [Table 5]
【００２７】[0027]
【写真１】 [Photo 1]
【００２８】次に劣化した針葉樹の例として、ヒノキを
用いて木口面収縮率（βｃｓ）による寸法安定性の変化
の実験をした結果を表６に示す。ヒノキ（飽和含水率＝
３８９％、収縮率βｒａｄ＝３．４７，βｔａｎ＝１
０．８８，βｃｓ＝１３．９７）を用いた実験では、Ｐ
ＥＧ＃４０００、蔗糖、ラクチュロースの三種の含浸法
は共に良好な寸法安定性を示した。この内、ラクチュロ
ース含浸法は常に最も良好な寸法安定性を示す。９％含
浸の段階から徐々に木口面収縮率が減少し、８０．８％
の含浸濃度における収縮率はβｒａｄ＝０．００，βｔ
ａｎ＝０．７３，βｃｓ＝０．７３の充分な寸法安定効
果が得られた。一方、ＰＥＧ＃４０００の収縮率は、５
４．５％の含浸濃度では木口面収縮率は７．５１％とや
や劣るが、８０．８％の含浸濃度における木口面収縮率
は１．８６％の良好な値を示す。蔗糖はラクチュロース
とほぼ平行しながら寸法安定性が向上し、８０．８％の
含浸濃度における木口面収縮率は０．８４％の良好な値
を示す。Next, as an example of deteriorated coniferous trees, Table 6 shows the results of an experiment in which the dimensional stability was changed by the shrinkage ratio (βcs) of the xylem surface using cypress. Cypress (saturated water content =
389%, shrinkage ratio βrad = 3.47, βtan = 1
In the experiment using 0.88, βcs = 13.97), P
The three impregnation methods of EG # 4000, sucrose and lactulose both showed good dimensional stability. Of these, the lactulose impregnation method always exhibits the best dimensional stability. From the stage of 9% impregnation, the shrinkage rate of the wood surface gradually decreased to 80.8%.
The contraction rate at the impregnation concentration of βrad = 0.00, βt
A sufficient dimensional stability effect of an = 0.73, βcs = 0.73 was obtained. On the other hand, the shrinkage ratio of PEG # 4000 is 5
At the impregnation concentration of 4.5%, the cusp contraction rate is 7.51%, which is slightly inferior, but at the impregnation concentration of 80.8%, the cusp contraction rate is a good value of 1.86%. Sucrose improves the dimensional stability while being almost parallel to lactulose, and exhibits a good shrinkage ratio of 0.84% at the mouth end surface at an impregnation concentration of 80.8%.
【００２９】[0029]
【表６】 [Table 6]
【００３０】以上のように、ラクチュロースは、蔗糖よ
りも常に寸法安定性が高く、ＰＥＧ＃４０００のように
ある特定濃度における不安定な状況もない。ラクチュロ
ースは劣化した広葉樹（飽和含水率＝６１９％）や針葉
樹（飽和含水率＝３８９％）に対して約８０〜９０％の
含浸濃度があれば、木口面収縮率において２％内外の寸
法安定効果を与えることができる。As described above, lactulose is always higher in dimensional stability than sucrose, and there is no unstable situation at a specific concentration such as PEG # 4000. Lactulose has a dimensional stability effect of 2% in terms of shrinkage at the mouth of the mouth if the impregnation concentration is about 80-90% for degraded hardwood (saturated water content = 619%) and softwood (saturated water content = 389%). Can be given.
【００３１】表７は、ヒノキ（飽和含水率３８９％）を
用いた実験の木口面収縮状況を示すものである。ヒノキ
（飽和含水率＝３８９％、収縮率βｒａｄ＝３．４７
％，βｔａｎ＝１０．８８％，βｃｓ＝１３．９７）で
はラクチュロースの寸法安定性が最も高く、５４．５％
の濃度ですでに木口面収縮率（βｃｓ）は１．９％に達
している。同濃度で蔗糖含浸法は３．３％、ＰＥＧ＃４
０００含浸法では７．５％であることからも、劣化が進
んだ針葉樹に対する寸法安定性の高さがわかる。Table 7 shows the shrinkage condition of the wood surface of the experiment using cypress (saturated water content 389%). Cypress (saturated water content = 389%, shrinkage βrad = 3.47
%, Βtan = 10.88%, βcs = 13.97), lactulose has the highest dimensional stability and 54.5%.
The shrinkage rate (βcs) of the mouth end surface has already reached 1.9% at the concentration of. Sucrose impregnation method at the same concentration 3.3%, PEG # 4
It is 7.5% in the 000 impregnation method, which shows that the dimensional stability is high with respect to degraded softwood.
【００３２】[0032]
【表７】 [Table 7]
【００３３】表８は、ケヤキ（飽和含水率６１９％）を
用いた実験の木口面収縮状況を示す。ケヤキ（飽和含水
率＝６１９％、収縮率βｒａｄ＝２５．００，βｔａｎ
＝６９．３０，βｃｓ＝７６．９８）では、いずれの含
浸法においても、８０〜９０％の高濃度溶液に含浸しな
ければ良好な寸法安定性は得られない。寸法安定効果
は、ラクチュロース≧ＰＥＧ＃４０００＞蔗糖含浸法の
順に良いが、ラクチュロースでは接線方向に僅かな膨張
が見られ、ＰＥＧ＃４０００では変形が観察された。Table 8 shows the shrinkage of the wood surface of the experiment using zelkova (saturated water content 619%). Zelkova (saturated water content = 619%, shrinkage ratio βrad = 25.00, βtan
= 69.30, βcs = 76.98), good dimensional stability cannot be obtained in any impregnation method unless impregnated with a high-concentration solution of 80 to 90%. The dimensional stability effect was good in the order of lactulose ≧ PEG # 4000> sucrose impregnation method, but slight expansion was observed in the tangential direction with lactulose, and deformation was observed with PEG # 4000.
【００３４】[0034]
【表８】 [Table 8]
【００３５】このように、ラクチュロース含浸法は、樹
種や含水率の異なる様々な水浸出土木材の寸法安定化に
対して有効であり、その抗収縮効果（ＡＳＥ）は蔗糖よ
りも常に高く、ＰＥＧ＃４０００と比較しても、樹種や
劣化状態によっては高い寸法安定性を示すことが判明し
た。As described above, the lactulose impregnation method is effective for dimensional stabilization of various water-leached soil woods having different tree species and water contents, and its anti-shrinkage effect (ASE) is always higher than that of sucrose, and PEG It was found that even when compared with # 4000, high dimensional stability was exhibited depending on the tree species and deterioration state.
【００３６】５０％の高濃度溶液に浸漬した際の木材
（ケヤキ）の変形に関する実験結果を表９に示し、その
収縮状況を写真２に示す。先ず、分子量の高いＰＥＧ＃
４０００に浸漬した試料は極端に変形した。他の分子量
の低い溶液に浸漬した試料では、室温に浸漬したものは
ほとんど変形せず、７０℃の加熱状態において僅かに変
形した。この変形は、ラクチュロースが蔗糖よりも安定
した状態であり、ＰＥＧ＃２００は僅かに膨潤する傾向
を示した。また、含浸溶液の温度差による木材の重量変
化率を見ると、ＰＥＧ＃４０００が変形による体積変化
のために大きく減少している他は、ラクチュロース＞蔗
糖＞ＰＥＧ＃２００の順で加熱による含浸効果が認めら
れた。Table 9 shows the experimental results on the deformation of wood (zelkova) when immersed in a 50% high-concentration solution, and Photo 2 shows the shrinkage. First, PEG # with high molecular weight
The sample immersed in 4000 was extremely deformed. In other samples dipped in the solution having a low molecular weight, those dipped at room temperature hardly deformed, and slightly deformed in the heating state at 70 ° C. This modification was in a state in which lactulose was more stable than sucrose, and PEG # 200 showed a slight swelling tendency. Also, looking at the weight change rate of the wood due to the temperature difference of the impregnation solution, PEG # 4000 significantly decreased due to the volume change due to deformation, and the effect of heating by impregnation was the order of lactulose>sucrose> PEG # 200. Was recognized.
【００３７】[0037]
【表９】 [Table 9]
【００３８】[0038]
【写真２】 [Photo 2]
【００３９】保存処理実験の結果、新素材の糖アルコー
ルであるラクチトールとマルチトールは、従来使用され
てきた高分子材料（ＰＥＧ＃４０００）や蔗糖と比較し
ても高い寸法安定性を示した。収縮防止効果を示す指標
である抗収縮効果（ＡＳＥ）を比較すると、従来のポリ
エチレングリコールを含浸させる方法（βｔａｎ９２．
９，βｒａｄ９５．０）や蔗糖を含浸させる方法（βｔ
ａｎ８６．３，βｒａｄ８５．７）に比べて、ラクチト
ールを含浸させる方法（βｔａｎ９３．２，βｒａｄ９
９．５）やマルチトールを含浸させる方法は（βｔａｎ
９０．２，βｒａｄ９６．８）良好な結果を示した。さ
らに重要なことは、従来の方法に比較して含浸期間を大
幅に短縮できることにある。これは糖アルコールの場
合、濃度上昇に伴う木材の収縮がほとんど見られないの
で、濃度を急激に上昇させることができるためである。
実験の結果から推測すると、保存処理期間は従来の５分
の１に短縮されるので飛躍的な処理期間の短縮化が期待
できる。As a result of the preservation treatment experiment, the sugar alcohols of new materials, lactitol and maltitol, showed high dimensional stability as compared with the conventionally used polymer materials (PEG # 4000) and sucrose. Comparing the anti-shrinkage effect (ASE), which is an index showing the shrinkage prevention effect, a conventional method of impregnating polyethylene glycol (βtan92.
9, βrad95.0) or a method of impregnating sucrose (βt
An 86.3, βrad 85.7), and a method of impregnating lactitol (βtan 93.2, βrad9)
9.5) and the method of impregnating maltitol (βtan
90.2, βrad96.8) showed good results. More importantly, the impregnation period can be greatly shortened as compared with the conventional method. This is because in the case of sugar alcohol, the shrinkage of the wood due to the increase in the concentration is hardly seen, so that the concentration can be rapidly increased.
Inferring from the results of the experiment, the storage processing period can be shortened to one fifth of the conventional one, so that a dramatic reduction in the processing period can be expected.
【００４０】[0040]
【効果】この発明に係る水浸有機遺物の保存処理方法
は、次の効果を有する。 １、非腐朽性素材のために含浸中の微生物被害を防ぐこ
とができる。従って、高温多湿地域における水浸有機遺
物の保存に適している。 ２、蔗糖含浸材は、蟻の被害を受けるが、本件発明に係
る糖アルコール含浸木材は蟻による被害はない。 ３、含浸濃度を温度でコントロールできるために自動運
転が可能である。 ４、寸法安定性が高い。脆弱な遺物の処理でも高い寸法
安定性を保つことができる。 ５、吸湿性が小さいので保存処理後の環境変化に対して
安定である。 ６、急激な濃度変化による収縮変化の危険性が少ない。
その結果、含浸期間を大幅に短縮でき、処理期間を短
く、しかも処理工程を簡略化できる。[Effect] The method for preserving water-immersed organic relics according to the present invention has the following effects. 1. It is possible to prevent microbial damage during impregnation due to non-decaying material. Therefore, it is suitable for preservation of flooded organic relics in hot and humid areas. 2. The sucrose impregnated material is damaged by ants, but the sugar alcohol impregnated wood according to the present invention is not damaged by ants. 3. Automatic operation is possible because the impregnation concentration can be controlled by temperature. 4. High dimensional stability. High dimensional stability can be maintained even when processing fragile relics. 5. Since it has low hygroscopicity, it is stable against environmental changes after storage treatment. 6. There is little risk of contraction change due to sudden concentration change.
As a result, the impregnation period can be significantly shortened, the treatment period can be shortened, and the treatment process can be simplified.
Claims (2)
液に浸漬させ、前記飽和水溶液の温度を室温から順次６
０乃至８０℃まで上昇させて、糖アルコールを水浸有機
遺物に含浸させ、その後水浸有機遺物を前記飽和水溶液
よりとりだして乾燥させることを特徴とする水浸有機遺
物の保存処理方法。1. A water-immersed organic relic is immersed in a saturated aqueous solution of sugar alcohol, and the temperature of the saturated aqueous solution is sequentially increased from room temperature to 6
A method for preserving a water-immersed organic residue, which comprises raising the temperature to 0 to 80 ° C. to impregnate the water-immersed organic residue with a sugar alcohol, and then removing the water-immersed organic residue from the saturated aqueous solution and drying.
上昇によるも常に糖アルコールの飽和状態を維持するよ
うに、当初糖アルコールを過剰に投入することを特徴と
する請求項１に記載の水浸有機遺物の保存処理方法。2. The water immersion method according to claim 1, wherein the sugar alcohol is initially charged in excess so that the saturated aqueous solution of the sugar alcohol always maintains the saturated state of the sugar alcohol even when the temperature rises. Preservation method of organic relics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22240994A JP3443463B2 (en) | 1994-08-24 | 1994-08-24 | Preservation treatment method of water-immersed organic relics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22240994A JP3443463B2 (en) | 1994-08-24 | 1994-08-24 | Preservation treatment method of water-immersed organic relics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0857812A true JPH0857812A (en) | 1996-03-05 |
| JP3443463B2 JP3443463B2 (en) | 2003-09-02 |
Family
ID=16781935
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22240994A Expired - Fee Related JP3443463B2 (en) | 1994-08-24 | 1994-08-24 | Preservation treatment method of water-immersed organic relics |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079503A (en) * | 2000-09-05 | 2002-03-19 | Nikken Chem Co Ltd | Method for preservation treatment of water-immersed organic residues |
| JP2011511015A (en) * | 2008-02-05 | 2011-04-07 | ユニリーバー・ナームローゼ・ベンノートシヤープ | How to treat hair |
| CN105773782A (en) * | 2016-04-14 | 2016-07-20 | 浙江亚厦产业园发展有限公司 | Furniture making-replica method |
-
1994
- 1994-08-24 JP JP22240994A patent/JP3443463B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002079503A (en) * | 2000-09-05 | 2002-03-19 | Nikken Chem Co Ltd | Method for preservation treatment of water-immersed organic residues |
| JP4552295B2 (en) * | 2000-09-05 | 2010-09-29 | 三菱化学株式会社 | Preservation method of water-immersed organic artifacts. |
| JP2011511015A (en) * | 2008-02-05 | 2011-04-07 | ユニリーバー・ナームローゼ・ベンノートシヤープ | How to treat hair |
| CN105773782A (en) * | 2016-04-14 | 2016-07-20 | 浙江亚厦产业园发展有限公司 | Furniture making-replica method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3443463B2 (en) | 2003-09-02 |
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