JPH0431002A - Manufacture of modified wood - Google Patents
Manufacture of modified woodInfo
- Publication number
- JPH0431002A JPH0431002A JP13937590A JP13937590A JPH0431002A JP H0431002 A JPH0431002 A JP H0431002A JP 13937590 A JP13937590 A JP 13937590A JP 13937590 A JP13937590 A JP 13937590A JP H0431002 A JPH0431002 A JP H0431002A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- phosphoric acids
- acid
- acids
- condensation reaction
- 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
- 239000002023 wood Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 235000011007 phosphoric acid Nutrition 0.000 claims abstract description 28
- 150000003016 phosphoric acids Chemical class 0.000 claims abstract description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000018044 dehydration Effects 0.000 claims abstract description 14
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 14
- 238000006482 condensation reaction Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims description 13
- 229920002678 cellulose Polymers 0.000 claims description 13
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 229920000137 polyphosphoric acid Polymers 0.000 abstract description 5
- 230000006866 deterioration Effects 0.000 abstract description 4
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 4
- 239000010876 untreated wood Substances 0.000 abstract description 4
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 abstract description 2
- YDHWWBZFRZWVHO-UHFFFAOYSA-N [hydroxy(phosphonooxy)phosphoryl] phosphono hydrogen phosphate Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(=O)OP(O)(O)=O YDHWWBZFRZWVHO-UHFFFAOYSA-N 0.000 abstract description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract description 2
- 229940005657 pyrophosphoric acid Drugs 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 abstract description 2
- 229940048102 triphosphoric acid Drugs 0.000 abstract description 2
- 230000032683 aging Effects 0.000 abstract 1
- 239000010875 treated wood Substances 0.000 abstract 1
- 239000011120 plywood Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 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 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 235000015392 Sesbania grandiflora Nutrition 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241001337993 Agathis <wasp> Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 244000112572 Sesbania bispinosa Species 0.000 description 1
- 235000010896 Sesbania bispinosa Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling 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
- 238000001035 drying Methods 0.000 description 1
- 239000012757 flame retardant agent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、建材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 as building materials and the like.
従来、難燃木材の製造法としては、たとえば、下記のよ
うな方法がある。Conventionally, as methods for producing flame-retardant wood, there are, for example, the following methods.
難燃化しようとする合板、単板等の原料木材に、リン酸
アンモン（アンモニウム）、塩化アンモン、ホウ酸、ホ
ウ砂等の水溶液を含浸させた後、乾燥する方法。A method in which raw material wood such as plywood or veneer that is to be made flame retardant is impregnated with an aqueous solution of ammonium phosphate (ammonium), ammonium chloride, boric acid, borax, etc., and then dried.
ところが、前記従来の方法では、使用される難燃化薬剤
が水に可溶性であるため、湿気や水等により前記薬剤が
木材から流出して、経時的な劣化を招く、すなわち、耐
水性、耐候性に劣るという問題があった。However, in the conventional method, since the flame retardant agent used is soluble in water, the agent flows out of the wood due to moisture or water, leading to deterioration over time. There was a problem of being inferior in gender.
このような事情に鑑み、この発明は、難燃性等に優れ、
しかも、耐水性、耐候性を有し、経時的な劣化の少ない
改質木材を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, this invention has excellent flame retardancy, etc.
Moreover, it is an object of the present invention to provide a method that can obtain modified wood that has water resistance, weather resistance, and less deterioration over time.
［課題を解決するための手段〕
前記課題を解決するため、この発明にかかる改質木材の
製法は、リン酸類を含む原料木材を加熱することによっ
て、同木材中のセルロース成分と前記リン酸類とを脱水
縮合反応させるようにするものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the method for producing modified wood according to the present invention heats raw material wood containing phosphoric acids to separate the cellulose component in the wood and the phosphoric acids. This is to cause a dehydration condensation reaction.
改質のための原料木材としては、特に限定はされず、丸
太、製材品、スライス単板、合板等が例示される。それ
らの樹種等についても何ら限定されることはない。ただ
し、リン酸類が含まれていることが必要である。The raw material wood for modification is not particularly limited, and examples thereof include logs, sawn timber products, sliced veneers, plywood, and the like. There are no limitations on the tree species, etc. However, it is necessary that phosphoric acids are included.
前記原料木材に含まれるリン酸類としては、特に限定さ
れず、たとえば、オルトリン酸の他、ピロリン酸、三リ
ン酸、四リン酸などのポリリン酸、メタリン酸およびそ
れらの塩等を挙げることができる。これらは、１種類の
み、あるいは、複数種が含まれていてもよい。The phosphoric acids contained in the raw material wood are not particularly limited, and include, for example, orthophosphoric acid, polyphosphoric acids such as pyrophosphoric acid, triphosphoric acid, and tetraphosphoric acid, metaphosphoric acid, and salts thereof. . These may include only one type or multiple types.
前記リン酸類を含む原料木材の作製方法としては、特に
限定されないが、たとえば、未処理木材に前記リン酸類
を含む処理液を含浸させる方法等が挙げられる。The method for producing the raw material wood containing the phosphoric acids is not particularly limited, but includes, for example, a method in which untreated wood is impregnated with a treatment liquid containing the phosphoric acids.
前記リン酸類を含む処理液の濃度、含浸方法、温度、時
間等については、特に限定されない。There are no particular limitations on the concentration, impregnation method, temperature, time, etc. of the treatment liquid containing the phosphoric acids.
前記原料木材中のセルロース成分とリン酸類とを脱水縮
合反応させるための加熱方法としては、特に限定される
わけではないが、前記原料木材を窒素等の不活性ガス雰
囲気中に入れて１２０〜１５０℃程度に加熱する方法が
好ましい。このような温度で加熱を行うと、前記脱水縮
合反応がスムーズに進行し、しかも、同反応を不活性ガ
ス雰囲気中で行うと、原料木材中のセルロースが高温加
熱によって空気酸化し損傷を受けることを防止すること
ができるからである。The heating method for causing a dehydration condensation reaction between the cellulose component in the raw material wood and the phosphoric acids is not particularly limited, but the raw material wood is placed in an inert gas atmosphere such as nitrogen and heated to a temperature of 120 to 150 A method of heating to about ℃ is preferred. If heating is carried out at such a temperature, the dehydration condensation reaction will proceed smoothly, but if the same reaction is carried out in an inert gas atmosphere, the cellulose in the raw material wood will be damaged by air oxidation due to high temperature heating. This is because it can prevent.
この発明にかかる改質木材の製法は、特に限定されるわ
けではないが、たとえば、以下のようにして行われる。The method for producing modified wood according to the present invention is not particularly limited, but may be carried out, for example, as follows.
まず、未処理木材をリン酸類の溶液に浸漬し、同溶液を
未処理木材中に充分含浸させる。この状態では、木材中
のセルロース成分と前記リン酸類とは未反応である。次
に、含浸処理木材をリン酸類の溶液から取り出し、同木
材を密閉炉に入れ、炉内を窒素ガスで置換するか、ある
いは、窒素ガスを流入することができる炉内へ同木材を
入れる。その後、炉を加熱し、木材中のセルロース成分
とリン酸類とを脱水縮合反応させて、同す゛／醋酸類木
材内へ固定化するようにするのである。First, untreated wood is immersed in a solution of phosphoric acids, and the solution is sufficiently impregnated into the untreated wood. In this state, the cellulose component in the wood and the phosphoric acids have not reacted. Next, the impregnated wood is removed from the phosphoric acid solution and placed in a closed furnace, and the inside of the furnace is replaced with nitrogen gas, or alternatively, the wood is placed in a furnace into which nitrogen gas can be introduced. Thereafter, the furnace is heated to cause a dehydration condensation reaction between the cellulose component in the wood and the phosphoric acid, thereby fixing the same acetic acid in the wood.
リン酸類を含む原料木材を加熱して、木材中のセルロー
ス（Ｃｅｌｌ−ＯＨ）成分のＯＨ基とリン酸類とを脱水
縮合反応させるようにすると、たとえば、リン酸類とし
てオルトリン酸（Ｈ，ＰＯ４）を例に挙げれば、
ＰＯ（０−Ｃｅ ｌ ］）−１
ＰＯ（０−Ｃｅ ］ ｌ）、ＯＨ１
または ＰＯ（０−Ｃｅ Ｉ １）（ＯＨ） ２のよ
うな脱水縮合物が生成する。他のリン酸類についても同
様の脱水縮合物が生成する。When raw material wood containing phosphoric acids is heated to cause a dehydration condensation reaction between the OH group of the cellulose (Cell-OH) component in the wood and the phosphoric acids, for example, orthophosphoric acid (H, PO4) is used as the phosphoric acid. For example, dehydration condensates such as PO(0-Ce I )-1 PO(0-Ce ] I), OH1 or PO(0-Ce I I)(OH)2 are formed. Similar dehydration condensates are produced for other phosphoric acids.
このような脱水縮合反応により、消火器の薬剤等に使用
され難燃化効果の高いリン酸類が木材中のセルロースに
固定されるため、木材に難燃性が付与される。Through such a dehydration condensation reaction, phosphoric acids, which are used in fire extinguishers and have a high flame retardant effect, are fixed to the cellulose in the wood, thereby imparting flame retardancy to the wood.
また、木材中のセルロースに固定されたリン酸類は、水
や湿気等により木材外に流出する恐れが少ないため、得
られた改質木材は、耐候性、耐水性を有し、経時的な劣
化の少ないものとなる。In addition, the phosphoric acids fixed in the cellulose in the wood are less likely to leak out of the wood due to water or moisture, so the obtained modified wood has weather resistance, water resistance, and does not deteriorate over time. The result will be less.
なお、前記脱水縮合反応により、木材中のセルロース成
分の水酸基の数が減少して同セルロースの親水性が低下
し、木材内に水が含浸しにくくなるため、上記性能に加
えて寸法安定性も向上する〔実 施 例〕
以下に、この発明の具体的な実施例を比較例と併せて説
明するが、この発明は下記実施例に限定されない。In addition, the dehydration condensation reaction reduces the number of hydroxyl groups in the cellulose component in the wood, reducing the hydrophilicity of the cellulose and making it difficult for water to penetrate into the wood.In addition to the above performance, dimensional stability also improves. [Examples] Specific examples of the present invention will be described below along with comparative examples, but the present invention is not limited to the following examples.
実施例１
アガチス材単板（２００Ｘ２００Ｘ１璽１）を、４０％
ポリリン酸水溶液に約８時間浸漬した。浸漬後、単板を
浸漬液から取り出し、数日間放置し、自然乾燥させた。Example 1 Agatis wood veneer (200 x 200 x 1 seal), 40%
It was immersed in a polyphosphoric acid aqueous solution for about 8 hours. After soaking, the veneer was removed from the soaking liquid and left to air dry for several days.
次に、単板中のセルロース成分とポリリン酸とを脱水縮
合反応させるため、単板を窒素ガス雰囲気の炉に入れ、
１４０℃で約１０分間加熱した。Next, in order to cause a dehydration condensation reaction between the cellulose component in the veneer and polyphosphoric acid, the veneer is placed in a furnace with a nitrogen gas atmosphere.
It was heated at 140°C for about 10 minutes.
冷却後、水洗し、乾燥させた結果、１５％の重量増加が
あった。After cooling, washing with water and drying resulted in a weight increase of 15%.
このＲ板５枚をフェノール系接着剤で積層、接着して、
合板を作製した。Five of these R plates were laminated and glued together using phenolic adhesive.
We made plywood.
一比較例１
未処理のアガチス材単板（２００Ｘ２００Ｘ１ｎ）５枚
を実施例１と同様にして積層、接着して、合板を作製し
た。Comparative Example 1 Five untreated agathis wood veneers (200x200x1n) were laminated and bonded in the same manner as in Example 1 to produce plywood.
比較例２
実施例１において、単板中のセルロース成分とポリリン
酸とを脱水縮合反応させるための加熱処理を省くように
した以外は実施例１と同様にして、合板を作製した。Comparative Example 2 Plywood was produced in the same manner as in Example 1, except that the heat treatment for causing a dehydration condensation reaction between the cellulose component and polyphosphoric acid in the veneer was omitted.
実施例１および比較例１〜２で得られた合板について、
ＪＩＳ表面試験に基づく燃焼試験を行ったところ、比較
例１で得られた合板は、完全燃焼し、貫通が生じたのに
対し、実施例１および比較例２で得られた合板は、貫通
が生じなかった。Regarding the plywood obtained in Example 1 and Comparative Examples 1 and 2,
When a combustion test was conducted based on the JIS surface test, the plywood obtained in Comparative Example 1 was completely burned and penetration occurred, whereas the plywood obtained in Example 1 and Comparative Example 2 showed no penetration. It did not occur.
また、実施例１および比較例２で得られた合板を水に浸
漬し、可溶成分が溶出するかどうか調べたところ、比較
例２で得られた合板は、明らかな重Ｍ減少が見られたの
に対し、実施例１で得られた合板は、はとんど重量変化
していなかった。Furthermore, when the plywood obtained in Example 1 and Comparative Example 2 was immersed in water to examine whether soluble components were eluted, it was found that the plywood obtained in Comparative Example 2 had a clear decrease in M. On the other hand, the plywood obtained in Example 1 showed almost no change in weight.
なお、実施例１で得られた合板は、比較例１で得られた
合板に比べ、寸法安定性が約２割程度優れていた。Note that the plywood obtained in Example 1 was about 20% superior in dimensional stability to the plywood obtained in Comparative Example 1.
（発明の効果〕
この発明にかかる改質木材の製法によれば、難燃性、寸
法安定性等に優れ、しかも、耐水性、耐候性を有し、
経時的な劣化の少ない改質木材を得
ることかできる。(Effects of the invention) According to the method for producing modified wood according to the present invention, modified wood that has excellent flame retardancy, dimensional stability, etc., water resistance and weather resistance, and less deterioration over time can be produced. You can get it.
Claims (1)
同木材中のセルロース成分と前記リン酸類とを脱水縮合
反応させるようにする改質木材の製法。1 By heating raw material wood containing phosphoric acids,
A method for producing modified wood in which a cellulose component in the wood and the phosphoric acid are subjected to a dehydration condensation reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13937590A JPH0431002A (en) | 1990-05-28 | 1990-05-28 | Manufacture of modified wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13937590A JPH0431002A (en) | 1990-05-28 | 1990-05-28 | Manufacture of modified wood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0431002A true JPH0431002A (en) | 1992-02-03 |
Family
ID=15243861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13937590A Pending JPH0431002A (en) | 1990-05-28 | 1990-05-28 | Manufacture of modified wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431002A (en) |
-
1990
- 1990-05-28 JP JP13937590A patent/JPH0431002A/en active Pending
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