JPH04193502A - Manufacture of modified timer - Google Patents
Manufacture of modified timerInfo
- Publication number
- JPH04193502A JPH04193502A JP32724090A JP32724090A JPH04193502A JP H04193502 A JPH04193502 A JP H04193502A JP 32724090 A JP32724090 A JP 32724090A JP 32724090 A JP32724090 A JP 32724090A JP H04193502 A JPH04193502 A JP H04193502A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- organic acid
- organic
- acid
- impregnated
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 150000007524 organic acids Chemical class 0.000 claims abstract description 71
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims abstract description 7
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 6
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims abstract description 6
- 239000011976 maleic acid Substances 0.000 claims abstract description 6
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims abstract description 6
- DNTMQTKDNSEIFO-UHFFFAOYSA-N n-(hydroxymethyl)-2-methylprop-2-enamide Chemical compound CC(=C)C(=O)NCO DNTMQTKDNSEIFO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000002023 wood Substances 0.000 claims description 110
- 239000007864 aqueous solution Substances 0.000 claims description 26
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 10
- HZHRYYYIOGLPCB-UHFFFAOYSA-N n,n-bis(hydroxymethyl)prop-2-enamide Chemical compound OCN(CO)C(=O)C=C HZHRYYYIOGLPCB-UHFFFAOYSA-N 0.000 claims description 2
- WXVTYVAWKFXHBD-UHFFFAOYSA-N 4-hydroxy-3-(hydroxymethyl)-2-methylbut-2-enamide Chemical compound NC(=O)C(C)=C(CO)CO WXVTYVAWKFXHBD-UHFFFAOYSA-N 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 239000002253 acid Substances 0.000 abstract description 4
- 230000006866 deterioration Effects 0.000 abstract description 4
- SQGKLVBPYCDZLT-UHFFFAOYSA-N n,n-bis(hydroxymethyl)-2-methylprop-2-enamide Chemical compound CC(=C)C(=O)N(CO)CO SQGKLVBPYCDZLT-UHFFFAOYSA-N 0.000 abstract description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 2
- 239000013043 chemical agent Substances 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 150000007522 mineralic acids Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 description 25
- 239000003054 catalyst Substances 0.000 description 10
- 210000002421 cell wall Anatomy 0.000 description 9
- 239000001913 cellulose Substances 0.000 description 9
- 229920002678 cellulose Polymers 0.000 description 9
- 238000001035 drying Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 238000005470 impregnation Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 6
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 235000005985 organic acids Nutrition 0.000 description 4
- 239000001632 sodium acetate Substances 0.000 description 4
- 235000017281 sodium acetate Nutrition 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 3
- 125000001165 hydrophobic group Chemical group 0.000 description 3
- 235000011056 potassium acetate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000002579 anti-swelling effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000011899 heat drying method Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- -1 sliced veneers Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 241000218691 Cupressaceae Species 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012948 isocyanate Chemical class 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XULSCZPZVQIMFM-IPZQJPLYSA-N odevixibat Chemical compound C12=CC(SC)=C(OCC(=O)N[C@@H](C(=O)N[C@@H](CC)C(O)=O)C=3C=CC(O)=CC=3)C=C2S(=O)(=O)NC(CCCC)(CCCC)CN1C1=CC=CC=C1 XULSCZPZVQIMFM-IPZQJPLYSA-N 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 241000894007 species Species 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、住宅設備、建築材料等に用いられる改質木
材の製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing modified wood used for housing equipment, building materials, etc.
従来、木材に寸法安定性を付与する方法としては、たと
えば、下記■〜■の方法等がある。Conventionally, methods for imparting dimensional stability to wood include, for example, the following methods (1) to (2).
■ 酸無水物、ハロゲン化有機酸、エポキシド、ハロゲ
ン化アルキル、イソシアネート類、またはホルマリン等
の化合物を木材に含浸させた後、前記化合物と、木材セ
ルロースの水酸基とを木材中で反応させることにより、
木材セルロースの水酸基を疎水基に置換する方法。この
方法によれば、木材セルロースの親水性の水酸基が疎水
基に置換されることにより、木材の吸湿・吸水性が低減
する結果、木材の寸法変化が低減する。■ After impregnating wood with a compound such as an acid anhydride, halogenated organic acid, epoxide, halogenated alkyl, isocyanate, or formalin, by reacting the compound with the hydroxyl group of wood cellulose in the wood,
A method of replacing hydroxyl groups in wood cellulose with hydrophobic groups. According to this method, the hydrophilic hydroxyl groups of wood cellulose are replaced with hydrophobic groups, thereby reducing the hygroscopicity and water absorption of the wood, thereby reducing dimensional changes in the wood.
■ スチレンやメタクリル酸メチル等のモノマーの溶液
を木材内に含浸させた後、加熱あるいは電子線照射等を
行うことにより、木材内に不溶性樹脂を生成させる方法
。この方法によれば、寸法安定性を向上させる他、硬度
や耐摩耗性も向上させることができる。■ A method of impregnating wood with a solution of monomers such as styrene or methyl methacrylate and then heating or irradiating it with electron beams to produce an insoluble resin within the wood. According to this method, in addition to improving dimensional stability, hardness and wear resistance can also be improved.
■ ポリエチレングリコールやポリエチレングリコール
モノメタクリレート等の水溶性樹脂の水溶液を木材に含
浸させた後、前記水溶性樹脂を乾燥、硬化させる方法。(2) A method in which wood is impregnated with an aqueous solution of a water-soluble resin such as polyethylene glycol or polyethylene glycol monomethacrylate, and then the water-soluble resin is dried and hardened.
この方法で含浸させる樹脂は、水溶性であるため、扱い
やすく、しかも木材の細胞壁内まで含浸させることがで
きるという利点がある。そして、細胞壁内まで含浸され
た前記水溶性樹脂は、そのバルキング効果により、木材
の寸法安定性を向上させることができる。Since the resin impregnated by this method is water-soluble, it is easy to handle and has the advantage that it can be impregnated into the cell walls of wood. The water-soluble resin impregnated into the cell walls can improve the dimensional stability of the wood due to its bulking effect.
ところが、前記■〜■の方法は、それぞれ、下記（７）
〜佇）の問題を有していた。However, each of the above methods (7)
~Tama) had the following problems.
（７１前記■の方法では、木材に含浸させる化合物の未
反応物あるいは反応残さが木材内に残留することにより
異臭がする。また、副生成物として酸が生成する場合が
あり、その場合は、酸により木材の組織が破壊されて強
度が劣下する。さらに、反応工程が複雑である。(71 In the method (2) above, unreacted substances or reaction residues of the compound to be impregnated into the wood remain in the wood, resulting in a strange odor.Also, acid may be produced as a by-product, in which case, Acid destroys the wood structure and reduces its strength.Furthermore, the reaction process is complicated.
（イ）前記■の方法では、木材に含浸させるモノマーが
疎水性であるため、同士ツマ−を木材の細胞壁までは含
浸させにくい。そのため、高い寸法安定性を得るために
は、含浸前の木材重量に対し、５０〜１００重量％もの
多量のモノマーを含浸させる必要がある。その結果、木
材に特有の「やわらかさ」や「あたたかさ」といった木
質感かなくなる。(a) In method (1) above, since the monomer impregnated into the wood is hydrophobic, it is difficult to impregnate the cell walls of the wood with monomers. Therefore, in order to obtain high dimensional stability, it is necessary to impregnate the wood with a large amount of monomer of 50 to 100% by weight based on the weight of the wood before impregnation. As a result, the wood loses its characteristic softness and warmth.
（つ）前記■の方法では、木材に含浸させる樹脂が水溶
性であるため、その樹脂が、木材の吸湿・吸水時に木材
外にしみ出して、木材表面がべとついたり寸法安定性効
果が低下したりしやすい。したがって、この方法により
得られた改質木材は、耐湿・耐水性に劣る。(1) In method (2) above, since the resin impregnated into the wood is water-soluble, the resin seeps out of the wood when the wood absorbs moisture and water, causing the wood surface to become sticky and dimensional stability to be affected. It is easy to decrease. Therefore, the modified wood obtained by this method has poor moisture and water resistance.
このような事情に鑑み、この発明は、寸法安定性、耐候
性等に優れ、未反応薬剤の残存臭が少なく、強度劣下の
程度が小さく、しかも木質感の失われていない改質木材
を効率良く得ることができる方法を提供することを課題
とする。In view of these circumstances, the present invention has developed a modified wood that has excellent dimensional stability, weather resistance, etc., has little residual odor from unreacted chemicals, has a small degree of deterioration in strength, and does not lose its wood feel. Our goal is to provide a method that can be obtained efficiently.
前記課題を解決するため、この発明にかがる改質木材の
製法は、原料木材に対し、加熱により無水物となる有機
酸（以下、これを単に「有機酸」と称することがある。In order to solve the above problems, the method for producing modified wood according to the present invention involves heating raw material wood to produce an organic acid that becomes an anhydride (hereinafter, this may be simply referred to as "organic acid").
）を水溶液の状態で含浸させた後、木材成分と前記有機
酸とを反応させることにより、前記有機酸を木材内に定
着させるようにするものである。) is impregnated in an aqueous solution state, and then the wood components are reacted with the organic acid to fix the organic acid in the wood.
この発明で用いられる改質のための原料木材としては、
特に限定されず、原木丸太、製材品、スライス単板、合
板等が挙げられる。これらの樹種についても、特に限定
されない。The raw material wood for modification used in this invention is:
There are no particular limitations, and examples include raw wood logs, sawn timber products, sliced veneers, plywood, and the like. These tree species are also not particularly limited.
この発明で用いられる有機酸は、水溶性であることが必
要である。水溶性であれば、水を媒体として木材の細胞
壁内まで容易に含浸させることができるからである。ま
た、前記有機酸は、加熱により脱水縮合して無水物とな
るものであることが必要である。このようなものであれ
ば、木材成分中のセルロースの水酸基と反応して、その
水酸基を疎水化することができ、そのため、木材の寸法
安定性を向上させることができるからである。The organic acid used in this invention needs to be water-soluble. This is because if it is water-soluble, it can be easily impregnated into the cell walls of wood using water as a medium. Further, the organic acid needs to undergo dehydration condensation upon heating to become an anhydride. This is because such a material can react with the hydroxyl groups of cellulose in the wood component to make the hydroxyl groups hydrophobic, thereby improving the dimensional stability of the wood.
使用できる有機酸の具体例としては、特に限定されるわ
けではないが、たとえば、マレイン酸、グリコール酸等
の２塩基酸が挙げられる。有機酸は、１種のみを用いて
もよいし、あるいは、２種以上を併用してもよい。Specific examples of organic acids that can be used include, but are not particularly limited to, dibasic acids such as maleic acid and glycolic acid. Only one type of organic acid may be used, or two or more types may be used in combination.
なお、必要に応じては、有機酸と木材成分との反応を促
進させるために、有機酸とともに触媒を水溶液の状態で
含浸させてもよい。使用できる触媒としては、特に限定
はされないが、たとえば、酢酸カリウム、酢酸ナトリウ
ム等の有機酸金属塩、アミン類等の塩基性物質等が挙げ
られる。Note that, if necessary, in order to promote the reaction between the organic acid and the wood component, a catalyst may be impregnated together with the organic acid in the form of an aqueous solution. The catalyst that can be used is not particularly limited, but includes, for example, organic acid metal salts such as potassium acetate and sodium acetate, and basic substances such as amines.
原料木材に含浸させた有機酸を、木材成分と反応させる
方法としては、特に限定はされないが、たとえば、加熱
乾燥法、高周波乾燥法等が挙げられる。反応温度として
は、特に限定はされないが、たとえば、有機酸として、
マレイン酸を使用した場合は、１５０〜１６０℃程度、
もしくは、それ以上が好ましく、グリコール酸を使用し
た場合は、１００°Ｃ程度、もしくは、それ以上が好ま
しい。The method of reacting the organic acid impregnated into the raw material wood with wood components is not particularly limited, and examples thereof include a heat drying method, a high frequency drying method, and the like. The reaction temperature is not particularly limited, but for example, as an organic acid,
When using maleic acid, the temperature is about 150 to 160℃,
The temperature is preferably about 100°C or higher, and when glycolic acid is used, the temperature is preferably about 100°C or higher.
なお、この発明では、前述した有機酸とともに、その有
機酸と反応して水に不溶化する有機化合物（以下、これ
を単に「有機化合物」と称することがある。）を水溶液
の状態で原料木材に含浸させ、前記有機酸を木材成分と
反応させて木材内に定着させるとともに、前記有機酸と
前記有機化合物とを木材内で反応させて木材内に定着さ
せるようにすることが好ましい。このような方法を行っ
た場合は、前述したように、有機酸と木材成分との反応
により、木材の寸法安定性が向上する。しかも、有機化
合物が、有機酸とともに、水を媒体として木材の細胞壁
内まで容易に含浸され、そこで有機酸と反応することに
より、水に不溶化して木材細胞壁内に定着し、その結果
、バルキング効果により木材の寸法安定性がさらに向上
するからである。In addition, in this invention, in addition to the above-mentioned organic acid, an organic compound that reacts with the organic acid and becomes insoluble in water (hereinafter, this may be simply referred to as an "organic compound") is added to the raw material wood in the form of an aqueous solution. It is preferable that the organic acid is impregnated and fixed in the wood by reacting with a wood component, and that the organic acid and the organic compound are reacted in the wood and fixed in the wood. When such a method is carried out, as described above, the dimensional stability of the wood is improved due to the reaction between the organic acid and the wood components. Moreover, the organic compound is easily impregnated into the cell wall of the wood together with the organic acid using water as a medium, and there, by reacting with the organic acid, it becomes insoluble in water and settles within the wood cell wall, resulting in a bulking effect. This is because the dimensional stability of the wood is further improved.
使用できる有機化合物としては、水溶性であり、かつ、
有機酸と反応して水に不溶化するものであれば、特に限
定はされないが、たとえば、メチロールアクリルアミド
、ジメチロールアクリルアミド、メチロールメタクリル
アミド、ジメチロールメタクリルアミド等が好ましい。Organic compounds that can be used include those that are water-soluble and
Although there is no particular limitation as long as it reacts with an organic acid and becomes insoluble in water, preferred examples include methylol acrylamide, dimethylol acrylamide, methylol methacrylamide, and dimethylol methacrylamide.
これらは、自己の有するメチロール基を介して、有機酸
の有するカルボキシル基と反応して不溶化することがで
きるとともに、単独でも自己架橋することにより不溶化
することができるからである。有機化合物は、１種のみ
用いてもよいし、あるいは、２種以上を併用してもよい
。This is because these can be made insolubilized by reacting with the carboxyl group of an organic acid via their own methylol group, and can also be made insolubilized by self-crosslinking when used alone. One type of organic compound may be used, or two or more types may be used in combination.
なお、有機酸とともに有機化合物を含浸させる場合には
、必要に応じて、それらの反応を促進させるために、そ
れらとともに触媒を水溶液の状態で含浸させてもよい。In addition, when impregnating an organic compound together with an organic acid, a catalyst may be impregnated together with them in an aqueous solution state, if necessary, in order to promote their reactions.
使用できる触媒としては、特に限定されないが、たとえ
ば、塩化アンモニウム、リン酸水素アンモニウム等が挙
げられる。Catalysts that can be used include, but are not particularly limited to, ammonium chloride, ammonium hydrogen phosphate, and the like.
また、有機酸と有機化合物の含浸順序は、特に限定はさ
れない。たとえば、有機酸を含む水溶液を含浸させた後
で、有機化合物を含む水溶液を含浸させてもよいし、逆
に、有機化合物を含む水溶液を含浸させた後で、有機酸
を含む水溶液を含浸させてもよい。あるいは、有機酸と
有機化合物を両方とも含む水溶液を含浸させてもよい。Furthermore, the order of impregnating the organic acid and the organic compound is not particularly limited. For example, after impregnating with an aqueous solution containing an organic acid, the aqueous solution containing an organic compound may be impregnated, or conversely, after impregnating with an aqueous solution containing an organic compound, the aqueous solution containing an organic acid may be impregnated. It's okay. Alternatively, it may be impregnated with an aqueous solution containing both an organic acid and an organic compound.
有機酸と有機化合物を両方とも含む水溶液を含浸させる
場合は、有機酸と有機化合物とを同時に含浸させること
ができ、含浸処理が一段階で才むため、処理効率が上が
り、好ましい。When impregnating with an aqueous solution containing both an organic acid and an organic compound, the organic acid and the organic compound can be impregnated at the same time, and the impregnation process is completed in one step, which increases the processing efficiency, which is preferable.
有機酸を水溶液の状態で含浸させる際、あるいは、有機
酸とともに有機化合物を水溶液の状態で含浸させる際の
含浸方法については、特に限定されないが、たとえば、
含浸させたい成分を含む水溶液を、減圧または加圧下で
木材内に強制的に含浸させる方法、飽水処理を施した原
料木材を前記水溶液中に浸漬する方法、前記水溶液を原
料木材表面に塗布する方法、等が挙げられる。The impregnation method when impregnating an organic acid in an aqueous solution state or impregnating an organic compound together with an organic acid in an aqueous solution state is not particularly limited, but for example,
A method of forcibly impregnating an aqueous solution containing the component to be impregnated into the wood under reduced pressure or increased pressure, a method of immersing raw material wood that has been subjected to saturated water treatment in the aqueous solution, and a method of applying the aqueous solution to the surface of the raw material wood. methods, etc.
有機酸と有機化合物とを反応させる方法としては、特に
限定はされないが、たとえば、加熱乾燥法、高周波乾燥
法、電子線照射法等が挙げられる。反応温度は、特に限
定はされないが、１２０〜１５０℃程度が好ましい。The method for reacting the organic acid and the organic compound is not particularly limited, and examples thereof include a heat drying method, a high frequency drying method, an electron beam irradiation method, and the like. The reaction temperature is not particularly limited, but is preferably about 120 to 150°C.
加熱により無水物となる有機酸を水溶液の状態で原料木
材に含浸させた後、木材成分と有機酸とを反応させるよ
うにすると、有機酸が木材成分中のセルロースの水酸基
と反応して、この水酸基を疎水基に置換することにより
、木材の吸湿・吸水性が低下し、その結果、木材の寸法
安定性が向上する。When raw wood is impregnated with an aqueous solution of an organic acid that becomes anhydrous when heated, and the wood components are allowed to react with the organic acid, the organic acid reacts with the hydroxyl groups of cellulose in the wood component, and this By substituting a hydroxyl group with a hydrophobic group, the hygroscopicity and water absorption of the wood are reduced, and as a result, the dimensional stability of the wood is improved.
また、前記有機酸とともに、この有機酸と反応して水に
不溶化する有機化合物を水溶液の状態で原料木材に含浸
させ、前述した有機酸と木材成分との反応を行わせると
ともに、有機酸と有機化合物とを木材内で反応させるよ
うにすると、前述したように、有機酸と木材成分との反
応により寸法安定性が向上する。しかも、有機酸と有機
化合物が、水を媒体として木材の細胞壁内まで容易に含
浸され、そこで反応することにより、木材の細胞壁内に
不溶性の物質が生成・定着し、その結果、バルキング効
果により木材の寸法安定性がさらに向上する。In addition, together with the organic acid, the raw material wood is impregnated in an aqueous solution with an organic compound that reacts with the organic acid and becomes insoluble in water. When the compound is allowed to react within the wood, the dimensional stability is improved due to the reaction between the organic acid and the wood components, as described above. Moreover, organic acids and organic compounds easily penetrate into the cell walls of wood using water as a medium, and by reacting there, insoluble substances are produced and fixed within the cell walls of wood, resulting in a bulking effect that causes the wood to become dimensional stability is further improved.
前述したように、有機酸および有機化合物は、木材の細
胞壁内まで容易に含浸される。そのため、含浸の効率と
作業性がよくなる。しかも、それらの含浸量が少なくて
すむので、木材に特有の木質感が保たれる。As mentioned above, organic acids and organic compounds are easily impregnated into the cell walls of wood. Therefore, impregnation efficiency and workability are improved. Moreover, since the amount of impregnation is small, the characteristic wood texture of wood can be maintained.
有機酸は、木材セルロースとの反応により、木材セルロ
ース上に固定される。また、有機酸は、有機化合物との
反応により、不溶性物質を生成して木材内に定着する。The organic acid is immobilized on the wood cellulose by reaction with the wood cellulose. In addition, organic acids generate insoluble substances through reaction with organic compounds and are fixed in wood.
セルロース上に固定された有機酸、および前記不溶性物
質は、木材の吸湿・吸水時に、木材外にしみ出すことに
より改質木材の性能を低下させることがないので、木材
の耐候性が向上する。The organic acid fixed on the cellulose and the insoluble substance do not impair the performance of the modified wood by seeping out of the wood when the wood absorbs moisture or water, so the weather resistance of the wood is improved.
有機酸と木材セルロースとの反応、および有機酸と有機
化合物との反応は容易に起こるため、得られた改質木材
中に残存する未反応薬剤の量が少ない。そのため、未反
応の薬剤に起因する臭気と強度劣下の程度が小さくなる
。しかも未反応薬剤を除去する処理が省けるので、処理
効率が上がる〔実 施 例〕
以下に、この発明の具体的な実施例および比較例を示す
が、この発明は、下記実施例に限定されない。Since the reaction between an organic acid and wood cellulose and the reaction between an organic acid and an organic compound occur easily, the amount of unreacted drug remaining in the obtained modified wood is small. Therefore, the degree of odor and strength deterioration caused by unreacted chemicals is reduced. Moreover, since the treatment for removing unreacted drugs can be omitted, the treatment efficiency is increased [Examples] Specific examples and comparative examples of the present invention are shown below, but the present invention is not limited to the following examples.
一実施例１−
有機酸としてマレイン酸を３０重量％含む水溶液に、触
媒として酢酸カリウムを５重量％加えて得られた処理液
を、接線方向３０ｍｍ、半径方向３０ｘ、ｔＩｈＩｈ同
方向５ｍｍ法のヒノキ材からなる原料単板に、減圧（５
０ｍＨｇ）下で３時間含浸させた。Example 1 - A treatment solution obtained by adding 5% by weight of potassium acetate as a catalyst to an aqueous solution containing 30% by weight of maleic acid as an organic acid was applied to a cypress tree using a method of 30 mm in the tangential direction, 30 x in the radial direction, and 5 mm in the same direction. The raw material veneer made of wood is subjected to reduced pressure (5
0 mHg) for 3 hours.
含浸処理された単板を１６０℃で１時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 160° C. for 1 hour.
一実施例２−
有機酸としてグリコール酸を３０重量％含む水溶液に、
触媒として酢酸ナトリウムを５重量％加えて得られた処
理液を、実施例１と同様の原料単板に、実施例１と同様
の方法で含浸させた。Example 2 - In an aqueous solution containing 30% by weight of glycolic acid as an organic acid,
The same raw material veneer as in Example 1 was impregnated with a treatment liquid obtained by adding 5% by weight of sodium acetate as a catalyst in the same manner as in Example 1.
含浸処理された単板を１００℃で３時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 100° C. for 3 hours.
一実施例３−
有機化合物としてメチロールアクリルアミドを２０重量
％含む水溶液に、触媒として塩化アンモニウムを３重量
％加えて得られた処理液を、実施例１で得られた改質木
材に、実施例１と同様の方法で含浸させた。Example 3 - A treatment solution obtained by adding 3% by weight of ammonium chloride as a catalyst to an aqueous solution containing 20% by weight of methylolacrylamide as an organic compound was applied to the modified wood obtained in Example 1. It was impregnated in the same manner as.
含浸処理された単板を１５０℃で２時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 150° C. for 2 hours.
一実施例４−
有機酸としてマレイン酸を２０重量％含むとともに、有
機化合物としてメチロールアクリルアミドを１０重量％
含む水溶液に、触媒として酢酸カリウムを５重量％加え
て得られた処理液を、実施例１と同様の原料単板に、実
施例１と同様の方法で含浸させた。Example 4 - Contains 20% by weight of maleic acid as an organic acid and 10% by weight of methylolacrylamide as an organic compound
The same raw material veneer as in Example 1 was impregnated in the same manner as in Example 1 with a treatment liquid obtained by adding 5% by weight of potassium acetate as a catalyst to the aqueous solution containing the above.
含浸処理された単板を１６０℃で２時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 160° C. for 2 hours.
一実施例５−
有機酸としてグリコール酸を２０重量％含むとともに、
有機化合物としてメチロールアクリルアミドを１０重量
％含む水溶液に、触媒として酢酸ナトリウムを５重量％
加えて得られた処理液を、実施例１と同様の原料単板に
、実施例１と同様の方法で含浸させた。Example 5 - Contains 20% by weight of glycolic acid as an organic acid, and
Add 5% by weight of sodium acetate as a catalyst to an aqueous solution containing 10% by weight of methylolacrylamide as an organic compound.
In addition, the obtained treatment liquid was impregnated into the same raw material veneer as in Example 1 in the same manner as in Example 1.
含浸処理された単板を１５０℃で２時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 150° C. for 2 hours.
−比較例−
有機化合物としてメチロールアクリルアミドを３０重量
％含む水溶液に、触媒として酢酸ナトリウムを５重量％
加えて得られた処理液を、実施例１と同様の原料単板に
、実施例１と同様の方法で含浸さ′せた。- Comparative Example - 5% by weight of sodium acetate as a catalyst was added to an aqueous solution containing 30% by weight of methylolacrylamide as an organic compound.
In addition, the obtained treatment liquid was impregnated into the same raw material veneer as in Example 1 in the same manner as in Example 1.
含浸処理された単板を１５０℃で２時間加熱乾燥させる
ことにより、改質木材を得た。Modified wood was obtained by heating and drying the impregnated veneer at 150° C. for 2 hours.
以上の実施例１〜５および比較例で得られた改質木材に
ついて、飽水処理および絶乾処理を行い、それぞれ、重
量と寸法を測定した。そして、得られた値から、下記（
１）〜（３）に従って、含浸率、定着率、および抗膨澗
能（ＡＳＥ）を求めた。その結果を第１表に示した。な
お、定着率が高い程、耐水性に優れていることを表し、
抗膨清能が高い程、寸法安定性に優れていることを表す
。The modified wood obtained in Examples 1 to 5 and Comparative Example above was subjected to saturated water treatment and absolute drying treatment, and the weight and dimensions of each were measured. Then, from the obtained values, the following (
The impregnation rate, fixation rate, and anti-swelling ability (ASE) were determined according to 1) to (3). The results are shown in Table 1. In addition, the higher the fixation rate, the better the water resistance.
The higher the anti-swelling ability, the better the dimensional stability.
（式（１１中、Ｗｌは原料木材の絶乾重量を表し、Ｗ２
は改質木材の絶乾重量を表す。）
（式（２）中、Ｇ１は飽水処理前の改質木材の絶乾重量
を表し、Ｇ２は飽水処理後の改質木材の絶乾重量を表す
。）
（式（３）中、Ｓｌは原料木材の膨潤率を表し、Ｓ２は
改質木材の膨潤率を表す。）
第１表
第１表から、下記（ａ）、（ｂｌが確認された。(In formula (11), Wl represents the absolute dry weight of raw material wood, W2
represents the bone dry weight of modified wood. ) (In formula (2), G1 represents the bone dry weight of the modified wood before water saturation treatment, and G2 represents the bone dry weight of the modified wood after water saturation treatment.) (In formula (3), SL represents the swelling rate of the raw wood, and S2 represents the swelling rate of the modified wood.) From Table 1, the following (a) and (bl) were confirmed.
（ａｌ 有機酸のみを含浸させて得られた実施例１〜
２の改質木材、および、有機酸とともに有機化合物を含
浸させて得られた実施例３〜５の改質木材は、有機化合
物のみを含浸させて得られた比較例の改質木材に比べて
、含浸率は、はぼ同等であるが、いずれも寸法安定性に
優れている。(Al Example 1 obtained by impregnating only organic acid
The modified wood of Example 2 and the modified wood of Examples 3 to 5 obtained by impregnating an organic compound together with an organic acid were compared to the modified wood of a comparative example obtained by impregnating only an organic compound. , the impregnation rate is almost the same, but both have excellent dimensional stability.
（ｂ） 有機酸とともに有機化合物を含浸させて得ら
れた実施例３〜５の改質木材は、有機酸のみを含浸させ
て得られた実施例１〜２の改質木材に比べて、耐水性お
よび寸法安定性がさらに優れている。(b) The modified wood of Examples 3 to 5 obtained by impregnating an organic compound with an organic acid has higher water resistance than the modified wood of Examples 1 to 2 obtained by impregnating only an organic acid. It has even better properties and dimensional stability.
この発明の製法によれば、寸法安定性、耐候性等に優れ
、未反応薬剤の残存具が少なく、強度劣下の程度が小さ
く、しかも木質感の失われていない改質木材を効率良く
得ることができる。According to the manufacturing method of this invention, modified wood with excellent dimensional stability, weather resistance, etc., less unreacted chemical residue, less strength deterioration, and no loss of wood texture can be efficiently obtained. be able to.
代理人 弁理士 松 本 武 彦Agent: Patent Attorney Takehiko Matsumoto
Claims (1)
水溶液の状態で含浸させた後、木材成分と前記有機酸と
を反応させることにより、前記有機酸を木材内に定着さ
せるようにする改質木材の製法。 ２ 原料木材に対し、加熱により無水物となる有機酸と
、この有機酸と反応して水に不溶化する有機化合物とを
水溶液の状態で含浸させ、前記有機酸を木材成分と反応
させて木材内に定着させるとともに、前記有機酸と前記
有機化合物とを木材内で反応させて木材内に定着させる
ようにする改質木材の製法。 ３ 有機酸が、マレイン酸およびグリコール酸のうちの
少なくとも１種である請求項１または２記載の改質木材
の製法。 ４ 有機化合物が、メチロールアクリルアミド、ジメチ
ロールアクリルアミド、メチロールメタクリルアミド、
およびジメチロールメタクリルアミドからなる群の中か
ら選ばれた少なくとも１種である請求項２記載の改質木
材の製法。[Scope of Claims] 1 Raw material wood is impregnated with an aqueous solution of an organic acid that becomes anhydride by heating, and then the organic acid is introduced into the wood by reacting the wood components with the organic acid. A method for producing modified wood that allows it to settle. 2 Raw material wood is impregnated with an aqueous solution of an organic acid that becomes anhydride when heated and an organic compound that reacts with the organic acid and becomes insoluble in water, and the organic acid is reacted with the wood components to dissolve the inside of the wood. A method for producing modified wood, in which the organic acid and the organic compound are caused to react with each other within the wood to cause the organic compound to be fixed within the wood. 3. The method for producing modified wood according to claim 1 or 2, wherein the organic acid is at least one of maleic acid and glycolic acid. 4 The organic compound is methylol acrylamide, dimethylol acrylamide, methylol methacrylamide,
and dimethylolmethacrylamide, and dimethylolmethacrylamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32724090A JPH04193502A (en) | 1990-11-27 | 1990-11-27 | Manufacture of modified timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32724090A JPH04193502A (en) | 1990-11-27 | 1990-11-27 | Manufacture of modified timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04193502A true JPH04193502A (en) | 1992-07-13 |
Family
ID=18196898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32724090A Pending JPH04193502A (en) | 1990-11-27 | 1990-11-27 | Manufacture of modified timer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04193502A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020183051A (en) * | 2019-04-27 | 2020-11-12 | 株式会社テオリアランバーテック | Manufacturing method of furan polymer impregnated wood |
-
1990
- 1990-11-27 JP JP32724090A patent/JPH04193502A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020183051A (en) * | 2019-04-27 | 2020-11-12 | 株式会社テオリアランバーテック | Manufacturing method of furan polymer impregnated wood |
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