JPH0338082B2 - - Google Patents
Info
- Publication number
- JPH0338082B2 JPH0338082B2 JP16441885A JP16441885A JPH0338082B2 JP H0338082 B2 JPH0338082 B2 JP H0338082B2 JP 16441885 A JP16441885 A JP 16441885A JP 16441885 A JP16441885 A JP 16441885A JP H0338082 B2 JPH0338082 B2 JP H0338082B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- calcium
- inorganic compound
- water
- carbon dioxide
- 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.)
- Expired
Links
- 239000002023 wood Substances 0.000 claims description 43
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 22
- 150000002484 inorganic compounds Chemical class 0.000 claims description 22
- 229910010272 inorganic material Inorganic materials 0.000 claims description 22
- 239000001569 carbon dioxide Substances 0.000 claims description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 7
- 239000001110 calcium chloride Substances 0.000 claims description 4
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 4
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 4
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 claims description 3
- UNMYWSMUMWPJLR-UHFFFAOYSA-L Calcium iodide Chemical compound [Ca+2].[I-].[I-] UNMYWSMUMWPJLR-UHFFFAOYSA-L 0.000 claims description 2
- YMHVBCADCUZNKP-UHFFFAOYSA-M [NH4+].[Ca+].[O-]S([O-])(=O)=O Chemical compound [NH4+].[Ca+].[O-]S([O-])(=O)=O YMHVBCADCUZNKP-UHFFFAOYSA-M 0.000 claims description 2
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 2
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims description 2
- 239000001639 calcium acetate Substances 0.000 claims description 2
- 229960005147 calcium acetate Drugs 0.000 claims description 2
- 235000011092 calcium acetate Nutrition 0.000 claims description 2
- 229910001622 calcium bromide Inorganic materials 0.000 claims description 2
- YALMXYPQBUJUME-UHFFFAOYSA-L calcium chlorate Chemical compound [Ca+2].[O-]Cl(=O)=O.[O-]Cl(=O)=O YALMXYPQBUJUME-UHFFFAOYSA-L 0.000 claims description 2
- 229940046413 calcium iodide Drugs 0.000 claims description 2
- 229910001640 calcium iodide Inorganic materials 0.000 claims description 2
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 claims description 2
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000003834 intracellular effect Effects 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 4
- 239000005696 Diammonium phosphate Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 3
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 3
- 235000019838 diammonium phosphate Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011592 zinc chloride Substances 0.000 description 2
- 235000005074 zinc chloride Nutrition 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 229940118662 aluminum carbonate Drugs 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- HFNQLYDPNAZRCH-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O.OC(O)=O HFNQLYDPNAZRCH-UHFFFAOYSA-N 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000019837 monoammonium phosphate Nutrition 0.000 description 1
- 239000006012 monoammonium phosphate Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
この発明は、木材に難燃性を付与した改質木材
の製法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for producing modified wood that imparts flame retardancy to wood.
不燃性あるいは難燃性材料として、木毛セメン
ト板、軽カル板、セメントボード等がある。これ
らは、不燃材料たるセメントに木材の繊維やパル
プ等をフイラー（充てん材）として混合している
のであるが、不燃性は確保できるかわりに、建具
として重要な曲げ強度が木材に比べて大きく劣つ
ている。このため、木材が曲げ強度を維持しつ
つ、難燃性（ここでいう難燃性とは、熱分解はす
るが、発炎燃焼はしないという意味で、いわゆる
自消性のことである）を有するように改質する方
法として、水溶性の無機塩類、たとえば、第２リ
ン酸アンモニウム、第１リン酸アンモニウム、炭
酸カリウム、炭酸ナトリウム、塩化カルシウム、
塩化マグネシウム、塩化亜鉛などを単一であるい
は混合して木材に含浸させるような方法もある。
前記無機塩類は、これまで防火性能が優れている
とされているものである。
Examples of non-combustible or flame-retardant materials include wood wool cement boards, light cal boards, and cement boards. These materials are made by mixing cement, which is a non-combustible material, with wood fibers, pulp, etc. as a filler, but although they can ensure non-combustibility, their bending strength, which is important for fittings, is significantly lower than that of wood. It's on. For this reason, the wood maintains its bending strength while maintaining flame retardancy (here, flame retardancy means that it decomposes thermally but does not ignite and burn; it is self-extinguishing). Water-soluble inorganic salts such as diammonium phosphate, diammonium phosphate, potassium carbonate, sodium carbonate, calcium chloride,
There is also a method of impregnating wood with magnesium chloride, zinc chloride, etc. alone or in combination.
The above-mentioned inorganic salts have been considered to have excellent fire prevention performance.
しかしながら、これらには問題点がいくつかあ
る。たとえば、第２リン酸アンモニウム、第１リ
ン酸アンモニウムは、低温で分解する。水溶液で
はとくに、この傾向が大きいため、防火材料製造
工程中で、高温処理を行う場合には適さないう
え、腐朽菌の栄養源となり、処理量が増すと、か
えつて防腐性が落ちる。また、炭酸カリウム、炭
酸ナトリウムは、処理後、空気中の炭酸ガスを吸
収して、重炭酸塩（炭酸水素塩）となり、経年変
化の安定性に欠ける。塩化カルシウム、塩化マグ
ネシウムは、吸湿性が極めて大きく、金属の腐食
や腐朽菌の繁殖を促し、木材質を劣化させる。塩
化亜鉛も吸湿性が大きい。また、これらの薬剤の
混合系においては、互いに欠点を補う効果を持つ
ものもあるが、いずれの場合も、水溶性薬剤であ
るため、耐水性に問題があり、外装材に使えない
など使用用途が限られている。これらとは別に有
機塩類など有機系薬剤を用いる場合もあるが、溶
剤等の関係で、取り扱いの点で難があるなど、や
はり、問題があつた。そこで、水に不溶な無機化
合物を液体中に分散させ、この処理液に木材を浸
し液体とともにこの無機化合物を木材の細胞内孔
まで含浸させるという方法があるが、木材中に含
浸する際の最も狭い通路である細胞壁孔中のピツ
トメンブランの空隙が直径約0.1μｍと非常に小さ
く含浸が難しい。 However, these methods have some problems. For example, diammonium phosphate and monoammonium phosphate decompose at low temperatures. This tendency is particularly strong in aqueous solutions, which makes them unsuitable for high-temperature treatment during the process of manufacturing fireproof materials, and they also serve as a nutrient source for decaying bacteria, and as the amount of treatment increases, their antiseptic properties actually deteriorate. Further, after treatment, potassium carbonate and sodium carbonate absorb carbon dioxide gas in the air and become bicarbonate (hydrogen carbonate), resulting in poor stability over time. Calcium chloride and magnesium chloride have extremely high hygroscopic properties, encourage corrosion of metals and the growth of rotting fungi, and deteriorate wood quality. Zinc chloride is also highly hygroscopic. In addition, some mixed systems of these chemicals have the effect of compensating for each other's shortcomings, but in any case, since they are water-soluble chemicals, they have problems with water resistance and cannot be used for exterior materials, etc. is limited. In addition to these, organic chemicals such as organic salts are sometimes used, but these still pose problems, such as difficulty in handling due to the solvent involved. Therefore, there is a method of dispersing a water-insoluble inorganic compound in a liquid, immersing the wood in this treatment solution, and impregnating the inorganic compound with the liquid to the inner pores of the wood cells. The pit membrane voids in the cell wall pores, which are narrow passages, are very small with a diameter of approximately 0.1 μm, making impregnation difficult.
この発明は、このような現状に鑑みてなされた
ものであつて、木材特有の曲げ強度を維持しつ
つ、耐水性に優れて安定な難燃性を有する改質木
材を得ることのできる製法を提供することを目的
としている。
This invention was made in view of the current situation, and aims to develop a manufacturing method that can obtain modified wood that has excellent water resistance and stable flame retardancy while maintaining the bending strength unique to wood. is intended to provide.
前記のような目的を達成するため、この発明
は、内部の空気が二酸化炭素で置換されている木
材に、二酸化炭素と反応して水に不溶な不燃性無
機化合物を生じる水溶性無機化合物の水溶液を含
浸させることにより、木材の組織内に前記不燃性
無機化合物を分散定着させるようにする改質木材
の製法をその要旨としている。
In order to achieve the above object, the present invention provides an aqueous solution of a water-soluble inorganic compound that reacts with carbon dioxide to produce a non-flammable inorganic compound that is insoluble in water. The gist of this method is to impregnate wood with a nonflammable inorganic compound to disperse and fix the nonflammable inorganic compound within the structure of the wood.
以下に、この発明を詳しく説明する。 This invention will be explained in detail below.
前記のように、この発明にかかる改質木材の製
法においては、内部の空気が二酸化炭素で置換さ
れている木材を用いる。このような木材は、たと
えば減圧加圧が行える容器内に木材を入れ、容器
内を減圧したのち容器内に二酸化炭素を封入する
ことを所定回繰り返すことにより得ることができ
る。 As mentioned above, in the method for producing modified wood according to the present invention, wood whose internal air has been replaced with carbon dioxide is used. Such wood can be obtained, for example, by placing the wood in a container that can be pressurized under reduced pressure, reducing the pressure in the container, and then filling the container with carbon dioxide, which is repeated a predetermined number of times.
前記のようにして得られた木材に、二酸化炭素
と反応して水に不溶な不燃性無機化合物を生じる
水溶性無機化合物の水溶液を含浸させて、木材組
織内の細胞内孔まで浸透させる。含浸は、たとえ
ば、前記水溶液中に木材を浸漬し、必要に応じ
て、加圧含浸を実施することによつて行うことが
できる。そうすると、細胞内孔に水に不溶で不燃
性の無機化合物が生成して分散定着する。 The wood obtained as described above is impregnated with an aqueous solution of a water-soluble inorganic compound that reacts with carbon dioxide to produce a water-insoluble, nonflammable inorganic compound, and the solution penetrates into the intracellular pores in the wood tissue. Impregnation can be carried out, for example, by immersing the wood in the aqueous solution and, if necessary, performing pressure impregnation. As a result, water-insoluble and nonflammable inorganic compounds are generated and dispersed in the intracellular pores.
この方法によると、ピツトメンブランが障害に
なることなく、木材の細胞内孔に難燃性を付与す
るために充分な不燃性無機化合物を分散定着させ
ることができるようになる。そして、水に不溶な
化合物が細胞内孔に定着しているので、水に浸漬
しても溶出することがなく、安定した難燃性が得
られる。木材特有の曲げ強度も損なわれない。 According to this method, a sufficient amount of nonflammable inorganic compound can be dispersed and fixed in order to impart flame retardancy to the intracellular pores of wood without the pit membrane becoming an obstacle. Since the water-insoluble compound is fixed in the intracellular pores, it will not elute even when immersed in water, and stable flame retardancy can be obtained. The bending strength unique to wood is not impaired.
生成される水に不溶な不燃性無機化合物として
は、炭酸カルシウム、炭酸アルミニウムなどが挙
げられる。 Examples of the water-insoluble nonflammable inorganic compounds produced include calcium carbonate and aluminum carbonate.
水溶性無機化合物としては、たとえば、臭化カ
ルシウム、ヨウ化カルシウム、塩化カルシウム、
塩素酸カルシウム、硝酸カルシウム、亜硝酸カル
シウム、硫酸アンモニウムカルシウム、酢酸カル
シウム、アルミン酸ナトリウム、アルミン酸カリ
ウムなどの塩、その他が挙げられる。これらは、
１種の化合物を単独で用いてもよいし、複数種の
化合物を混合して、あるいは別々に用いるように
してもよい。 Examples of water-soluble inorganic compounds include calcium bromide, calcium iodide, calcium chloride,
Examples include salts such as calcium chlorate, calcium nitrate, calcium nitrite, ammonium calcium sulfate, calcium acetate, sodium aluminate, potassium aluminate, and others. these are,
One type of compound may be used alone, or a plurality of types of compounds may be mixed or used separately.
木材中の水に不溶な不燃性無機化合物の量は、
木材の絶乾重量に対して40重量％以上になるよう
にするのがよい。また、不燃性無機化合物の水に
対する溶解度は、1.0以下となつているのがよい。 The amount of water-insoluble, non-flammable inorganic compounds in wood is
It is recommended that the amount be at least 40% by weight based on the absolute dry weight of the wood. Further, the solubility of the nonflammable inorganic compound in water is preferably 1.0 or less.
つぎに、この発明の実施例を説明する。 Next, embodiments of the invention will be described.
（実施例 １）
まず、スギの１mm厚の単板を、減圧加圧が行え
る容器に入れ、容器内を減圧したあと容器に二酸
化炭素を封入することを３〜４回繰り返して、単
板中の空気を二酸化炭素で置換した。つぎに、容
器に飽和の塩化カルシウム水溶液を流入させ、24
時間反応させた。この処理により、重量増加率
（絶乾法）70〜80％の改質木材が得られた。(Example 1) First, a cedar veneer with a thickness of 1 mm was placed in a container that can be depressurized and pressurized, and after depressurizing the inside of the container, the process of filling carbon dioxide into the container was repeated 3 to 4 times. of air was replaced with carbon dioxide. Next, a saturated calcium chloride aqueous solution was poured into the container, and 24
Allowed time to react. Through this treatment, modified wood with a weight increase rate (bone dry method) of 70 to 80% was obtained.
この改質木材は、優れた難燃性を有していた。
また、曲げ強度が約1000Kg／cm2あり、一般の無機
系ボードの約10倍の強度であつた。 This modified wood had excellent flame retardancy.
It also had a bending strength of about 1000 kg/cm 2 , about 10 times stronger than ordinary inorganic boards.
（実施例 ２）
実施例１と同様にして得られた木材を、実施例
１と同じく容器中の飽和塩化カルシウム水溶液に
浸した。そして、加圧処理を施した。そうする
と、１時間で、実施例１と同様の効果が得られ
た。すなわち、重量増加率が70〜80％で、優れた
難燃性を有し、曲げ強度が約1000Kg／cm2の改質木
材が得られた。(Example 2) Wood obtained in the same manner as in Example 1 was immersed in a saturated calcium chloride aqueous solution in a container as in Example 1. Then, pressure treatment was performed. Then, the same effect as in Example 1 was obtained in one hour. That is, a modified wood with a weight increase rate of 70 to 80%, excellent flame retardancy, and a bending strength of about 1000 Kg/cm 2 was obtained.
（実施例 ３）
飽和塩化カルシウム水溶液の代わりに飽和臭化
カルシウム水溶液を用いるようにしたほかは、実
施例１と同じようにして改質木材をつくつた。(Example 3) A modified wood was produced in the same manner as in Example 1, except that a saturated calcium bromide aqueous solution was used instead of a saturated calcium chloride aqueous solution.
得られた改質木材は、重量増加率60〜75％であ
つて、優れた難燃性および木材特有の曲げ強度を
有していた。 The obtained modified wood had a weight increase rate of 60 to 75%, and had excellent flame retardancy and bending strength peculiar to wood.
〔発明の効果〕
この発明にかかる改質木材の製法は、内部の空
気が二酸化炭素で置換されている木材に、二酸化
炭素と反応して水に不溶な不燃性無機化合物を生
じる水溶性無機化合物の水溶液を含浸させること
により、木材の組織内に前記不燃性無機化合物を
分散定着させるようにするので、木材特有の曲げ
強度を維持しつつ、耐水性に優れて安定な難燃性
を有する改質木材を得ることができる。[Effects of the Invention] The method for producing modified wood according to the present invention is to add a water-soluble inorganic compound that reacts with carbon dioxide to produce a nonflammable inorganic compound that is insoluble in water, in wood whose internal air has been replaced with carbon dioxide. By impregnating the wood with an aqueous solution, the incombustible inorganic compound is dispersed and fixed within the structure of the wood, so it is possible to maintain the bending strength characteristic of wood while maintaining excellent water resistance and stable flame retardancy. You can get quality wood.
Claims (1)
材に、二酸化炭素と反応して水に不溶な不燃性無
機化合物を生じる水溶性無機化合物の水溶液を含
浸させることにより、木材の組織内に前記不燃性
無機化合物を分散定着させるようにする改質木材
の製法。 ２ 不燃性無機化合物が、木材の絶乾重量に対し
て40重量％以上分散定着するようにする特許請求
の範囲第１項記載の改質木材の製法。 ３ 水溶性無機化合物が臭化カルシウム、ヨウ化
カルシウム、塩化カルシウム、塩素酸カルシウ
ム、硝酸カルシウム、亜硝酸カルシウム、硫酸ア
ンモニウムカルシウム、酢酸カルシウム、アルミ
ン酸ナトリウム、アルミン酸カリウムからなる群
より選ばれた少なくとも１種である特許請求の範
囲第１項または第２項記載の改質木材の製法。[Claims] 1. Wood whose internal air has been replaced with carbon dioxide is impregnated with an aqueous solution of a water-soluble inorganic compound that reacts with carbon dioxide to produce a nonflammable inorganic compound that is insoluble in water. A method for producing modified wood in which the nonflammable inorganic compound is dispersed and fixed within the structure of the wood. 2. A method for producing modified wood according to claim 1, in which the nonflammable inorganic compound is dispersed and fixed in an amount of 40% by weight or more based on the absolute dry weight of the wood. 3 The water-soluble inorganic compound is at least one selected from the group consisting of calcium bromide, calcium iodide, calcium chloride, calcium chlorate, calcium nitrate, calcium nitrite, ammonium calcium sulfate, calcium acetate, sodium aluminate, and potassium aluminate. A method for producing modified wood according to claim 1 or 2, which is a seed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16441885A JPS6225007A (en) | 1985-07-25 | 1985-07-25 | Manufacture of modified wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16441885A JPS6225007A (en) | 1985-07-25 | 1985-07-25 | Manufacture of modified wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6225007A JPS6225007A (en) | 1987-02-03 |
| JPH0338082B2 true JPH0338082B2 (en) | 1991-06-07 |
Family
ID=15792769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16441885A Granted JPS6225007A (en) | 1985-07-25 | 1985-07-25 | Manufacture of modified wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6225007A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3740167B2 (en) * | 1995-07-11 | 2006-02-01 | 双日株式会社 | Edible shrimp |
| AU2006312544B8 (en) * | 2005-11-11 | 2010-12-23 | Jfe Steel Corporation | Method of manufacturing electric resistance welding pipes having excellent characterization of welded seams |
| JP6195332B2 (en) * | 2011-07-28 | 2017-09-13 | 兼松サステック株式会社 | Wood material containing flame retardant and method for producing wood material containing flame retardant |
-
1985
- 1985-07-25 JP JP16441885A patent/JPS6225007A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6225007A (en) | 1987-02-03 |
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