JPH02235704A - Flame-retarded timber - Google Patents
Flame-retarded timberInfo
- Publication number
- JPH02235704A JPH02235704A JP5846589A JP5846589A JPH02235704A JP H02235704 A JPH02235704 A JP H02235704A JP 5846589 A JP5846589 A JP 5846589A JP 5846589 A JP5846589 A JP 5846589A JP H02235704 A JPH02235704 A JP H02235704A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- flame
- impregnated
- flame retardant
- timber
- 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.)
- Granted
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 17
- 239000004327 boric acid Substances 0.000 claims abstract description 17
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 16
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 6
- 239000002023 wood Substances 0.000 claims description 77
- 239000003063 flame retardant Substances 0.000 claims description 58
- 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 claims description 52
- 239000007795 chemical reaction product Substances 0.000 claims description 9
- 241001337993 Agathis <wasp> Species 0.000 abstract description 10
- 235000015392 Sesbania grandiflora Nutrition 0.000 abstract description 10
- 238000005470 impregnation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- LWFBRHSTNWMMGN-UHFFFAOYSA-N 4-phenylpyrrolidin-1-ium-2-carboxylic acid;chloride Chemical compound Cl.C1NC(C(=O)O)CC1C1=CC=CC=C1 LWFBRHSTNWMMGN-UHFFFAOYSA-N 0.000 abstract description 5
- 241000218631 Coniferophyta Species 0.000 abstract 3
- 241001116438 Araucaria Species 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 241000218645 Cedrus Species 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- SQSPRWMERUQXNE-UHFFFAOYSA-N Guanylurea Chemical compound NC(=N)NC(N)=O SQSPRWMERUQXNE-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 240000000972 Agathis dammara Species 0.000 description 1
- 241000163534 Agathis philippinensis Species 0.000 description 1
- 241000256602 Isoptera Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- ZSJHIZJESFFXAU-UHFFFAOYSA-N boric acid;phosphoric acid Chemical compound OB(O)O.OP(O)(O)=O ZSJHIZJESFFXAU-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- QWJNFFYFEKXZBF-UHFFFAOYSA-N cyanocyanamide Chemical compound N#CNC#N QWJNFFYFEKXZBF-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Fireproofing Substances (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、難燃化木材に関し、特にナンヨウスギ科の木
材を用いたことにより、多量の難燃化剤を含浸でき、難
燃性が大幅に向上するようにしたものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to flame-retardant wood, and in particular, by using wood from the Araucaceae family, it is possible to impregnate a large amount of flame retardant, and the flame retardance is significantly improved. It was designed to improve the performance.
[従来の技術]
従来より木材の難燃化には、木材中に種々の難燃化剤を
含没する方法が採られており、この難燃化剤として、ハ
ロゲン系難燃化剤や無機リン系難燃化剤などがある。と
ころが、上記ハロゲン系難燃化剤では、燃焼時に有毒ガ
スを発生するため、安全衛生上好ましくない問題があり
、また無機リン系難燃化剤では、難燃効果が小さい欠点
があった。[Prior Art] Traditionally, wood has been made flame retardant by impregnating various flame retardants into the wood. Examples include phosphorus-based flame retardants. However, the above-mentioned halogen-based flame retardants generate toxic gases during combustion, which poses an unfavorable problem in terms of health and safety, and the inorganic phosphorus-based flame retardants have the disadvantage of having a small flame retardant effect.
そこでこの上うな難燃化剤に代わって、近時木材に難燃
性を付与する難燃化剤として、ジシアンアミド、リン酸
、ホウ酸および水の部分反応生成物が有効であることが
知られるようになった(特開昭57−70 178号公
報、特開昭61−179242号公報など)。このもの
は、木材への着火を防止するとともに、燃焼時には木材
表層に硬い炭化層を形成して木材の燃焼速度を遅らせる
作用を有している。Therefore, in place of these flame retardants, it has recently become known that partial reaction products of dicyanamide, phosphoric acid, boric acid, and water are effective as flame retardants that impart flame retardancy to wood. (JP-A-57-70-178, JP-A-61-179242, etc.). This has the effect of preventing the wood from igniting, and also forms a hard carbonized layer on the surface layer of the wood during combustion, thereby slowing down the burning rate of the wood.
[発明が解決しようとする課題]
ところが、上記難燃化剤は水に溶けにくいため、木材に
含浸しにくい欠点があった。このため、多量の難燃化剤
を含浸でき高い難燃性を有する難燃化木材を得ることが
できず、未だ、建設省の1不燃」あるいは「準不燃」グ
レードに合格した難燃化木材は実現していない。[Problems to be Solved by the Invention] However, the above-mentioned flame retardant is difficult to dissolve in water, so it has a drawback that it is difficult to impregnate wood. For this reason, it has not been possible to obtain flame-retardant wood that can be impregnated with a large amount of flame retardant and has high flame retardancy, and there is still no flame-retardant wood that has passed the Ministry of Construction's grade 1 non-combustible or semi-non-combustible. has not been realized.
そこで、本発明は上述の課題を解消し、充分な難燃性を
有する難燃化木材を提供することを目的としている。Therefore, an object of the present invention is to solve the above-mentioned problems and provide a flame-retardant wood having sufficient flame retardancy.
[課題を解決するための手段]
本発明は、ナンヨウスギ科の木材に、ジシアンジアミド
、リン酸、ホウ酸および水の部分反応生成物を、固形分
量で木材1.3当たり100kg以上含浸させたことを
その解決手段とした。[Means for Solving the Problems] The present invention involves impregnating wood of the Araucaceae family with a partial reaction product of dicyandiamide, phosphoric acid, boric acid, and water in a solid content of 100 kg or more per 1.3 wood. This was the solution.
[作用]
このように木材としてナンヨウスギ科の木材を用いたこ
とにより、上記ジシアンジアミド、リン酸、ホウ酸およ
び水の部分反応生成物の含浸量が固形分量で木材1.3
当たり100kg以上と大幅に増加し、これによって難
燃性が著しく向上し、建設省の「準不燃」のグレードを
満足する難燃化木材が得られる。[Effect] By using the wood of the Araucaceae family as the wood, the amount of the partial reaction products of dicyandiamide, phosphoric acid, boric acid and water impregnated with the wood is 1.3 in terms of solid content.
This significantly increases the weight to over 100 kg per unit, which significantly improves the flame retardancy and makes it possible to obtain flame-retardant wood that satisfies the Ministry of Construction's "semi-incombustible" grade.
以下、本発明を詳細に説明する。The present invention will be explained in detail below.
本発明において使用されるナンヨウスギとは、アガチス
(Agathis alba Foxy)、アガチス;
アルマシガ(A.Philippinensis ga
rb)等のナンヨウスギ科の木材を総称しており、難燃
化剤の含浸可能量が多くかつ含浸状態または含浸濃度の
部分的ばらつきがない点で、特にアガチスが好ましい。The Araucifera used in the present invention includes Agathis alba Foxy, Agathis;
A. philippinensis ga
It is a general term for wood belonging to the Araucaceae family such as Araucaceae, and agathis is particularly preferred because it can be impregnated with a large amount of flame retardant and there is no local variation in impregnated state or impregnated concentration.
またナンヨウスギはその木材中に含まれているヤニ分が
少ないので着火性が低く好ましいが、希にヤニ分の含ま
れるらのもあるので、錐燃化剤を含浸する前にこれを選
別しておくことが望ましい。またナンヨウスギ科の木材
は、異常組織が比較的少なく、規則的に揃った乱れのな
い組織構造を有するものが多いので、燃焼時においても
木材炭化層の破壊が防止あるいは抑制されるために好適
に使用される。そしてこの木材には、心材あるいは辺材
か使用されてよい。In addition, Araucifera is preferred because it has a low ignitability because it contains a small amount of resin in its wood, but there are rare cases where it contains resin, so it must be sorted out before being impregnated with a flame retardant. It is desirable to leave it there. In addition, the wood of the Araucaceae family has relatively few abnormal tissues and often has a regularly arranged and undisturbed structure, so it is suitable for preventing or suppressing the destruction of the carbonized layer of the wood during combustion. used. This wood may be either heartwood or sapwood.
また上記ジシアンジアミド、リン酸、ホウ酸および水の
部分反応生成物は、先に記載の通り特開昭57−701
78号公報および特開昭61−179242号公報に記
載の難燃化剤である。このものは、主として、ジシアン
アミドとリン酸との反応によって生成したリン酸グアニ
ル尿素、およびこのリン酸グアニル尿素がホウ酸と反応
して生じたリン酸グアニル尿素−ホウ酸生成物、および
未反応のジシアンジアミド、リン酸、ホウ酸などを含む
ものであり、一例として濃度20重量%の水溶液として
準備されてなるものがあるが、ジシアンジアミド、リン
酸、ホウ酸および水の部分反応生成物の濃度は20%に
限定されるらのではない。Further, the partial reaction products of dicyandiamide, phosphoric acid, boric acid and water are as described above in JP-A No. 57-701.
It is a flame retardant described in JP-A No. 78 and JP-A-61-179242. This mainly consists of guanylurea phosphate produced by the reaction of dicyanamide and phosphoric acid, the guanylurea phosphate-boric acid product produced by the reaction of this guanylurea phosphate with boric acid, and the unreacted guanylurea-boric acid product. It contains dicyandiamide, phosphoric acid, boric acid, etc., and for example, it is prepared as an aqueous solution with a concentration of 20% by weight, but the concentration of the partial reaction product of dicyandiamide, phosphoric acid, boric acid, and water is 20% by weight. It is not limited to %.
ここでリン酸とは、リンの全てのオキシ酸を総称してお
り、例えばH,IPO.、H 3 P O s、H,P
O.−}110、H+PtO’r、H 4P *O e
, H P O s、ポリリン酸およびこれらの混合物
などを含んでいる。またホウ酸とは、B (O H )
,、}IBO,、HB03、H * B 40 ?、B
t 0 3およびこれらの混合物を含んでいる。また
ここでいう部分反応生成物とは、各成分が全て化学変化
を受けるのではなくて、少なくとも50%、好ましくは
約80〜95%が反,応していることを意味している。Here, phosphoric acid is a general term for all phosphorus oxyacids, such as H, IPO. , H 3 P O s, H, P
O. -}110, H+PtO'r, H 4P *O e
, HPOs, polyphosphoric acid, and mixtures thereof. Also, boric acid is B (OH)
,,}IBO,,HB03,H*B40? , B
t 0 3 and mixtures thereof. Furthermore, the term "partial reaction product" as used herein means that not all of the components have undergone chemical change, but at least 50%, preferably about 80 to 95%, have reacted.
またこの難燃化剤中のジシアンジアミドとリン酸の合計
撒とホウ酸の重量比(ジシアンノアミドとリン酸/ホウ
酸)は約60/40〜90/10であるが、生成するリ
ン酸グアニル尿素がより高い溶解性を有する点で、約6
5/3 5〜75/25程度が好ましい。In addition, the weight ratio of the total amount of dicyandiamide and phosphoric acid to boric acid (dicyanoamide and phosphoric acid/boric acid) in this flame retardant is about 60/40 to 90/10, but the phosphoric acid guanylurea produced is In terms of having higher solubility, about 6
Approximately 5/35 to 75/25 is preferable.
そして、このジシアンジアミド、リン酸、ホウ酸および
水の部分反応生成物は、上記ナンヨウスギ科の木材中に
、固形分量で木材1m3当たり100k9以上含浸され
、特に高い難燃性が得られ「準不燃」木材が達成でき、
ムラなく含浸できる点で、木材lI3当たり溶液として
500k9以上の含浸が好ましい。100k9未満であ
ると、木材の難燃性改善効果が充分に得られず好ましく
ない。This partial reaction product of dicyandiamide, phosphoric acid, boric acid, and water is impregnated into the wood of the Araucaceae family in a solid content of 100 k9 or more per 1 m3 of wood, resulting in particularly high flame retardancy and "semi-nonflammable" wood can be achieved,
It is preferable to impregnate with a solution of 500k9 or more per lI3 of wood, since it can be impregnated evenly. If it is less than 100k9, the effect of improving the flame retardance of wood cannot be sufficiently obtained, which is not preferable.
次に、この難燃化剤を上記木材中に含浸する方法につい
て説明する。Next, a method of impregnating the above-mentioned wood with this flame retardant will be explained.
まず、含浸の前に木材を乾燥しておくことが好ましい。First, it is preferable to dry the wood before impregnation.
乾燥は天然乾燥でも人工乾燥でもよいが、含水率9〜1
5%となるまで乾燥を行っておくことが、゛上記難燃化
剤の含浸を円滑に行うことができ、難燃化剤が多量に含
浸できる点で好ましい。Drying may be natural or artificial drying, but the moisture content should be 9 to 1.
It is preferable to dry the film until it reaches 5% because impregnation with the flame retardant can be carried out smoothly and a large amount of the flame retardant can be impregnated.
含漫には、通常オートクレープ等を用いた加圧含浸法が
採用される。具体的には、木材をオートクレープ内に入
れ、一旦1 6 0*xHg( − 6 0 0xyr
Hg)程度の減圧下で30分程度減圧処理した後、上記
難燃化剤をオートクレープ内に注入して満たし、難燃化
剤液中に木材を浸漬させた状態で加圧して、この難燃化
剤を木材中に含浸する。この時上記範囲の量の難燃化剤
を木材へ円滑に含浸できるためには、圧力1.2〜3.
0MPa程度の条件とすることが好ましい。For impregnation, a pressure impregnation method using an autoclave or the like is usually employed. Specifically, wood is placed in an autoclave and once heated to 160*xHg (-600xyr
After depressurizing the autoclave for about 30 minutes under a reduced pressure of approximately Impregnate the wood with a combustion agent. At this time, in order to smoothly impregnate the wood with the flame retardant in the amount in the above range, a pressure of 1.2 to 3.
It is preferable to set the condition to about 0 MPa.
このように難燃化剤を含浸した後、さらに木材を乾燥し
て、目的の難燃化木材を得る。この時乾燥によって、含
浸された難燃化剤が揮発せずに水分のみが除去され、か
つ乾燥によって木口割れ等が生じないように、木材の木
口を封止した状態で乾燥を行うことが望ましい。木口の
封止は通常の方法によればよく、エボキシ樹脂系合成樹
脂にタールなどを配合した塗剤を塗布する手段などが好
適に用いられる。乾燥は、木材の含水率が8〜12%程
度となるように行えばよく、通常、真空度0.1−10
Torr程度、温度60〜80℃程度の条件で真空加熱
乾燥が行なわれる。After impregnating the wood with the flame retardant in this manner, the wood is further dried to obtain the desired flame retardant wood. At this time, it is desirable to dry the wood with the end of the wood sealed so that the impregnated flame retardant does not volatilize and only moisture is removed, and the end of the wood is not cracked due to drying. . The end of the end may be sealed by a conventional method, and a method of applying a coating material containing tar or the like to an epoxy resin-based synthetic resin is preferably used. Drying can be carried out so that the moisture content of the wood is about 8 to 12%, and usually at a vacuum degree of 0.1 to 10%.
Vacuum heating drying is performed under conditions of approximately Torr and temperature of approximately 60 to 80°C.
以上のようにして得られた難燃化木材は、ナンヨウスギ
科の木材中に上記難燃化剤が含浸されているので、従来
の難燃化木材に比べ、難燃化剤の含浸量が大幅に増加し
、従来の数倍の難燃化剤を含浸することができる。また
ナンヨウスギは木材中に含まれるヤニ分が少ないので着
火性が低い利点もある。またナンヨウスギ科の木材は、
乱れのない非常に規則的な組織構造を有しており、この
ため燃焼時にあっても炭化層の破壊を防止あるいは抑制
することができる。このように、ナンヨウスギ科の木材
を用いてこれに上記難燃化剤を多量に含浸したことによ
って、高い難燃性を有する難燃化木材を得ることができ
、従来木材では達成し得なかった「準不燃」グレードを
満足した難燃化木材を得ることも可能である。このよう
な難燃化木材・をドアや壁材、床材等の各種木製建材な
どとして用いれば、火災時などの着火または延焼を遅ら
せて、避難時間や消火活動時間を確保することができる
ため、生命の安全または財産保護などに大きく役立つも
のとなる。またこの難燃化木材は、木材固有の利点(肌
合い、美観、軽量など)はそのまま保持しており、木質
感豊かな建材等としての利用性も高い。また有毒ガス発
生等の安全性上の問題もなく、防蟻性および防腐性も良
好で、鉄腐性や吸湿性も素材と同等であるなどの利点を
有しているうえに、工業的にも量産可能であるなど生産
上の利点ら大きい。The flame retardant wood obtained in the above manner has the above flame retardant impregnated into the wood of the Araucaceae family, so the amount of flame retardant impregnated is significantly greater than that of conventional flame retardant wood. can be impregnated with several times more flame retardant than conventional methods. Araucous cedar also has the advantage of being less flammable because the wood contains less resin. In addition, the wood of the Araucaceae family is
It has a very regular structure with no disturbances, and therefore it is possible to prevent or suppress the destruction of the carbonized layer even during combustion. In this way, by using wood from the Araucaceae family and impregnating it with a large amount of the above-mentioned flame retardant, it was possible to obtain flame-retardant wood with high flame retardancy, something that could not be achieved with conventional wood. It is also possible to obtain flame-retardant wood that satisfies the "semi-incombustible" grade. If such flame-retardant wood is used as various wooden building materials such as doors, wall materials, flooring materials, etc., it is possible to delay the ignition or spread of fire in the event of a fire, thereby securing time for evacuation and firefighting activities. This will greatly help in life safety and property protection. Furthermore, this flame-retardant wood retains the inherent advantages of wood (texture, beauty, light weight, etc.) and is highly usable as a building material with a rich wood feel. In addition, there are no safety problems such as the generation of toxic gas, and it has good termite and antiseptic properties, and has the same corrosion resistance and moisture absorption properties as other materials. It also has great production advantages, such as being able to be mass-produced.
[実施例]
第1表に示した条件に従って、木材への難燃化剤の含浸
を行った。難燃化剤には、特開昭57−70178号に
記載されているものを使用し、木材には径50xxの心
材を用いた。また含漫には、木材を1 6 0 ixH
g( − 6 0 0 mml{ g)で30分減圧
した後、難燃化剤中に浸漬して、圧力1.5MPaで4
時間加圧することによって含浸させる方法を採った。難
燃化剤の含浸量の測定結果は、数回の実験結果の平均値
である。[Example] According to the conditions shown in Table 1, wood was impregnated with a flame retardant. The flame retardant described in JP-A No. 57-70178 was used, and the wood used was a heartwood with a diameter of 50xx. Also included is wood at 160 ixH
g (-600 mml { g) for 30 minutes, then immersed in a flame retardant and heated at a pressure of 1.5 MPa for 40 minutes.
We adopted a method of impregnation by applying pressure for a period of time. The measurement results of the amount of flame retardant impregnated are the average values of the results of several experiments.
(以下、余白)
第1表より明らかなように、木材としてナンヨウスギ科
のアガチスを用いた際に非常に多量の難燃化剤を含浸で
きることが判明し、しかもアガチスを用いた場合には、
数回の実験によるばらつきも少なかった。これに対し、
ナンヨウスギ科以外の木材を使用した比較例1〜8にあ
っては、難燃化剤の含浸量は少なかった。(The following is a blank space) As is clear from Table 1, it was found that when agathis, a member of the Araucaceae family, was used as the wood, it was possible to impregnate a very large amount of flame retardant, and moreover, when agathis was used,
There was also little variation due to several experiments. On the other hand,
In Comparative Examples 1 to 8 in which wood from a species other than Araucaceae was used, the amount of flame retardant impregnated was small.
一般に、木材への難燃化剤の含浸は木材の空隙率および
浸透性によって左右され、空隙率の大きいものは難燃化
剤の含浸量を多くすることができるとされている。通常
空隙率は、含水率を一定とすれば比重に比例する。した
がってナンヨウスギ科と同程度の比重を有する比較例1
〜7の樹種においても難燃化剤の浸透性に差が無ければ
ナンヨウスギと同程度の含浸量となるはずであるが、実
験結果からはナンヨウスギとこの特開昭57−7017
8号に記載の難燃化剤との組み合わせが特異的な挙動を
示すことがわかる。Generally, the impregnation of a flame retardant into wood is influenced by the porosity and permeability of the wood, and it is said that wood with a large porosity can be impregnated with a large amount of a flame retardant. Generally, the porosity is proportional to the specific gravity if the water content is constant. Therefore, Comparative Example 1 has a specific gravity similar to that of Araucaceae.
If there is no difference in the permeability of the flame retardant between the 7 tree species, the amount of impregnation should be about the same as that of Arauciana cedar, but from the experimental results, it is clear that the amount of impregnated wood is about the same as that of Aracoma cedar and this Japanese Patent Application Laid-Open No. 57-7017.
It can be seen that the combination with the flame retardant described in No. 8 exhibits specific behavior.
また難燃化剤として特開昭57−70178号に記載の
薬剤以外の薬剤を使用した比較例9では、木材にアガチ
スを使用してら離燃化剤の含浸量が少なく、充分な難燃
性を得ることはできなかった。In addition, in Comparative Example 9 in which a flame retardant other than the agent described in JP-A-57-70178 was used, the amount of impregnated flame retardant was small compared to using agathis in the wood, and sufficient flame retardancy was obtained. I couldn't get it.
また「南洋材」第41頁(須藤彰司著、地球出版)など
によれば、アガチスなどのナンヨウスギ科の木材は、薬
剤の含漫性の良好なものには分類されておらず、このこ
とからもアガチスと特開昭57−70178号公報に開
示された難燃化剤との組み合わせが特異的なものである
ことが理解できる。Furthermore, according to "Nanyo Wood", page 41 (written by Shoji Sudo, published by Chikyu Publishing), wood of the Araucaceae family, such as agathis, is not classified as having good drug-impregnating properties; It can also be seen that the combination of agathis and the flame retardant disclosed in JP-A-57-70178 is unique.
(試駒例)
実験例lにおいてアガチスに特開昭57−70178号
公報に記載の難燃化剤を含浸させた難燃化木材を用いて
、[準不燃]試験を行った。この試験は、建設省告示第
1231号、第1372号に記載の方法により行った。(Example of Test Piece) In Experimental Example 1, a [quasi-noncombustible] test was conducted using flame-retardant wood obtained by impregnating agathis with a flame retardant described in JP-A-57-70178. This test was conducted according to the method described in Ministry of Construction Notification No. 1231 and No. 1372.
試験結果から、この難燃化木材は「準不燃」グレートを
満足するものであった。The test results showed that this flame-retardant wood satisfied the "semi-incombustible" grade.
し発明の効果]
以上説明したように、本発明の難燃化木材は、ナンヨウ
スギ科の木材に、ジシアンジアミド、リン酸、ホウ酸お
よび水の部分反応生成物を、固形分量で木材Is3当た
り100k9以上含浸させたものであるので、多量の難
燃化剤を含没することができ、高い難燃性を得ることが
できる利点がある。[Effects of the Invention] As explained above, the flame-retardant wood of the present invention contains a partial reaction product of dicyandiamide, phosphoric acid, boric acid, and water in wood of the Araucaceae family in a solid content of 100 k9 or more per wood Is3. Since it is impregnated, it has the advantage of being able to impregnate a large amount of flame retardant and achieve high flame retardancy.
このため、従来木材では達成し得なかった「準不燃」グ
レードの難燃化木材を実現できるようになる。また木材
固有の利点(肌合い、美観、軽量など)はそのまま保持
しているので、質感を損なうことなく難燃性を高めた木
製建材などとして、その利用性が大幅に広がる。またヤ
ニ分の少ないナンヨウスギ科の木材を使用しているので
着火性も低ぐ、またナンヨウスギが規則的に揃った異常
組織の少ない組織構造を有しているために燃焼時の組織
破壊を防止あるいは抑制できる利点をも有している。ま
た難燃化剤の優れた特徴に起因して安全性上の問題もな
く、防蟻性および防腐性も良好であって鉄腐性や吸湿性
も素材と同等であるうえに、工業的にも量産可能である
などの利点も有している。This makes it possible to create flame-retardant wood with a "quasi-incombustible" grade, which has not been possible with conventional wood. In addition, since it retains the inherent advantages of wood (texture, beauty, light weight, etc.), it can be used as a building material with increased flame retardancy without sacrificing its texture. In addition, because we use wood from the Araucaceae family that has a low resin content, it has low ignitability, and because Araucacea has a regularly arranged tissue structure with few abnormal tissues, it prevents tissue destruction during combustion. It also has the advantage of being able to be suppressed. In addition, due to the excellent characteristics of the flame retardant, there are no safety issues, and it has good anti-termite and antiseptic properties, and has the same corrosion resistance and moisture absorption properties as materials, and is suitable for industrial use. It also has the advantage of being mass-producible.
Claims (1)
ホウ酸および水の部分反応生成物を、固形分量で木材1
m^3当たり100kg以上含浸させてなることを特徴
とする難燃化木材。Araucaceae wood contains dicyandiamide, phosphoric acid,
The partial reaction product of boric acid and water was added to the wood in a solids amount of 1
A flame-retardant wood characterized by being impregnated with 100 kg or more per m^3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5846589A JPH02235704A (en) | 1989-03-10 | 1989-03-10 | Flame-retarded timber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5846589A JPH02235704A (en) | 1989-03-10 | 1989-03-10 | Flame-retarded timber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02235704A true JPH02235704A (en) | 1990-09-18 |
JPH0579202B2 JPH0579202B2 (en) | 1993-11-01 |
Family
ID=13085179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5846589A Granted JPH02235704A (en) | 1989-03-10 | 1989-03-10 | Flame-retarded timber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02235704A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1075760C (en) * | 1997-10-08 | 2001-12-05 | 东北林业大学 | Synthetic process of wood fire-retardant agent |
JP2011143670A (en) * | 2010-01-18 | 2011-07-28 | Sumitomo Forestry Co Ltd | Timber drying method |
-
1989
- 1989-03-10 JP JP5846589A patent/JPH02235704A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1075760C (en) * | 1997-10-08 | 2001-12-05 | 东北林业大学 | Synthetic process of wood fire-retardant agent |
JP2011143670A (en) * | 2010-01-18 | 2011-07-28 | Sumitomo Forestry Co Ltd | Timber drying method |
Also Published As
Publication number | Publication date |
---|---|
JPH0579202B2 (en) | 1993-11-01 |
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