JP2005047140A - Flame-retardant wood fiberboard and method for producing the same - Google Patents
Flame-retardant wood fiberboard and method for producing the same Download PDFInfo
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- 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 title claims abstract description 87
- 239000003063 flame retardant Substances 0.000 title claims abstract description 87
- 239000011094 fiberboard Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002023 wood Substances 0.000 title claims description 24
- 239000000853 adhesive Substances 0.000 claims abstract description 44
- 230000001070 adhesive effect Effects 0.000 claims abstract description 43
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 14
- 229920002522 Wood fibre Polymers 0.000 claims description 48
- 239000002025 wood fiber Substances 0.000 claims description 48
- 238000000748 compression moulding Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- -1 boric acid compound Chemical class 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000004114 Ammonium polyphosphate Substances 0.000 description 7
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 7
- 229920001276 ammonium polyphosphate Polymers 0.000 description 7
- 239000004327 boric acid Substances 0.000 description 7
- 238000007598 dipping method Methods 0.000 description 6
- 229910010272 inorganic material Inorganic materials 0.000 description 6
- 238000005470 impregnation Methods 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 150000004819 silanols Chemical class 0.000 description 5
- 241000218645 Cedrus Species 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 4
- 239000004640 Melamine resin Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000011147 inorganic material Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 241001070941 Castanea Species 0.000 description 1
- 235000014036 Castanea Nutrition 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241000534018 Larix kaempferi Species 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
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- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
本発明は、難燃性木質繊維板及びその製造方法に関する。
更に詳しくは、比較的容易に製造でき、しかも全体的に均一で優れた耐火性能を備えた難燃性木質繊維板及びその製造方法に関する。
The present invention relates to a flame-retardant wood fiber board and a method for producing the same.
More specifically, the present invention relates to a flame-retardant wood fiber board that can be manufactured relatively easily and that is uniform overall and has excellent fire resistance, and a method for manufacturing the same.
例えば特許文献１には、天然木に不燃性無機化合物の水溶液（以下、不燃性溶液と言う）を含浸させて、木材を難燃化する技術が提案されている。
しかしながら、不燃性溶液を木材の内部にまで十分に含浸させるには、不燃性溶液中に木材を長時間浸漬させる必要があり、しかも含浸後の乾燥処理についても、同様に多大な時間を要していた。また木材の表面部と内部、あるいは節がある所とない所では、不燃性溶液の含浸量が異なってくるため、不燃性無機化合物を木材に均一に分散させることは困難であった。 However, in order to sufficiently impregnate the wood with the incombustible solution, it is necessary to immerse the wood in the incombustible solution for a long time, and the drying treatment after the impregnation also requires a lot of time. It was. Moreover, since the impregnation amount of the nonflammable solution is different between the surface portion and the inside of the wood, or where there is no node, it is difficult to uniformly disperse the nonflammable inorganic compound in the wood.
（本発明の目的）
そこで本発明の目的は、比較的容易に製造でき、しかも全体に均一で優れた耐火性能を備えた難燃性木質繊維板及びその製造方法を提供することにある。
(Object of the present invention)
SUMMARY OF THE INVENTION An object of the present invention is to provide a flame-retardant wood fiber board that can be manufactured relatively easily, and that has uniform and excellent fire resistance, and a method for manufacturing the same.
上記目的を達成するために講じた本発明の手段は次のとおりである。
第１の発明にあっては、
難燃剤を含んだ木質繊維が、難燃性接着剤を用いて圧縮成形されてなることを特徴とする、
難燃性木質繊維板である。
The means of the present invention taken to achieve the above object are as follows.
In the first invention,
A wood fiber containing a flame retardant is formed by compression molding using a flame retardant adhesive.
It is a flame retardant wood fiberboard.
第２の発明にあっては、
難燃剤を含んだ木質繊維が、水ガラスを主成分とする難燃性接着剤を用いて圧縮成形されており、板の表面は防水性を有するシートまたはフィルムで被覆されていることを特徴とする、
難燃性木質繊維板である。
In the second invention,
A wood fiber containing a flame retardant is compression molded using a flame retardant adhesive mainly composed of water glass, and the surface of the plate is covered with a waterproof sheet or film. To
It is a flame retardant wood fiberboard.
第３の発明にあっては、
難燃剤を含んだ溶液を木質繊維に含ませて難燃化処理し、難燃化処理した木質繊維を珪酸ソーダを主成分とする難燃性接着剤を用いて圧縮成形し、圧縮成形後の板表面に防水性を有するシートまたはフィルムで被覆することを特徴とする、
難燃性木質繊維板の製造方法である。
In the third invention,
Flame retardant solution containing flame retardant in wood fiber, flame retardant wood fiber is compression molded with flame retardant adhesive mainly composed of sodium silicate, and after compression molding The board surface is covered with a waterproof sheet or film,
It is a manufacturing method of a flame-retardant wood fiber board.
木質繊維に含ませる難燃剤としては、リン酸系難燃剤、ホウ酸系難燃剤、ノンハロゲン系の水溶性の難燃剤等を使用するのが好ましく、無毒無臭であり、且つ揮発性有機化合物（ＶＯＣ）等を一切使用していないものが好ましい。 As the flame retardant contained in the wood fiber, it is preferable to use a phosphoric acid flame retardant, a boric acid flame retardant, a non-halogen water-soluble flame retardant, etc., which is non-toxic and odorless and has a volatile organic compound (VOC). ) Is not used at all.
更に、ポリリン酸アンモニウムまたはホウ酸化合物の少なくとも一方を成分として含む難燃剤がより好ましい。このポリリン酸アンモニウムやホウ酸化合物は、燃焼時に、木材の組織体（セルロース、ヘミセルロース、リグニン等）に含まれる水酸基（ＯＨ基）と反応することで、燃えにくい炭化層と水とを発生し、可燃性物質の生成を防止する作用（脱水炭化作用）を発揮する。 Furthermore, the flame retardant which contains at least one of an ammonium polyphosphate or a boric acid compound as a component is more preferable. This ammonium polyphosphate or boric acid compound reacts with a hydroxyl group (OH group) contained in a wood structure (cellulose, hemicellulose, lignin, etc.) during combustion to generate a carbonized layer and water that are difficult to burn, Demonstrates the action of preventing the generation of flammable substances (dehydration carbonization)
このため、難燃剤にはポリリン酸アンモニウムやホウ酸化合物を多く含有させると効果的である。例えば常温（２０℃）で水１００ｇに対し、ポリリン酸アンモニウムやホウ酸化合物を４〜１５ｇに相当する溶解度以上となるように混合した高濃度の難燃化剤を含む溶液であることが好ましい。ただし、原料である樹種によって含浸率が異なるため、使用する木材によって適宜設定される。 For this reason, it is effective if the flame retardant contains a large amount of ammonium polyphosphate or boric acid compound. For example, a solution containing a high-concentration flame retardant mixed with ammonium polyphosphate or a boric acid compound so as to have a solubility of 4 to 15 g or more with respect to 100 g of water at room temperature (20 ° C.) is preferable. However, since the impregnation rate differs depending on the tree species as the raw material, it is set appropriately depending on the wood used.
なお、難燃剤には、ポリリン酸アンモニウムやホウ酸化合物の他に、必要に応じて例えばリン酸化合物、シラノール塩、あるいは高分子材料等を含有させることもできる。特に好ましくは、金属イオン封鎖剤や湿潤浸透性の界面活性剤の一種以上と、リン酸化合物やシラノール塩等を含むものが好ましい。 In addition to the ammonium polyphosphate and the boric acid compound, the flame retardant may contain, for example, a phosphoric acid compound, a silanol salt, or a polymer material as necessary. Particularly preferred are those containing at least one sequestering agent or wet permeable surfactant and a phosphoric acid compound or silanol salt.
木質繊維の原料である木材としては、難燃剤を含む溶液を含浸させやすいという理由から、特に杉または杉の間伐材を使用することが好ましい。特に間伐材を利用することで、貴重な木材資源を有効に利用することができる。また、杉以外の木材としては、唐松、檜等の針葉樹、あるいは桐、椋、ラワン、カポール、栗、ポプラ等の広葉樹を挙げることができるが、特にこれらに限定されない。木質繊維は、木材を常法により解繊し、所要の含水率に乾燥する。 As wood, which is a raw material for wood fibers, it is particularly preferable to use cedar or cedar thinning material because it is easy to impregnate a solution containing a flame retardant. In particular, by using thinned wood, valuable wood resources can be used effectively. In addition, examples of timber other than cedar include coniferous trees such as Karamatsu and oak, and broad-leaved trees such as paulownia, oak, lawan, capol, chestnut, and poplar, but are not particularly limited thereto. Wood fiber is defibrated by conventional methods and dried to the required moisture content.
この木質繊維に難燃剤を含む溶液を含ませて、難燃化処理する。具体的には、難燃剤を含む溶液に木質繊維を浸漬したり、難燃剤を含む溶液を木質繊維に散布して含浸させる方法などが挙げられる。なお、浸漬方法は、特に限定するものではないが、難燃剤を入れた容器内に木質繊維を浸漬させる方法（いわゆる、ディッピング）や、加圧による浸漬（含浸）方法を挙げることができる。 A flame retardant treatment is performed by adding a solution containing a flame retardant to the wood fiber. Specific examples include a method of immersing wood fibers in a solution containing a flame retardant, or a method of spraying and impregnating a wood fiber with a solution containing a flame retardant. The dipping method is not particularly limited, and examples thereof include a method (so-called dipping) in which wood fibers are immersed in a container containing a flame retardant, and a dipping (impregnation) method by pressurization.
難燃剤を含む溶液を浸漬させるまたは散布する等によって、木質繊維がカールして縮むような場合は、浸漬または散布する工程の前処理として、形状記憶繊維の製造に使用される形状記憶装置等を使用して、木質繊維の形状を固定化することもできる。 When the wood fiber curls and shrinks by dipping or spraying a solution containing a flame retardant, as a pretreatment of the step of dipping or spraying, a shape memory device used for manufacturing shape memory fibers, etc. It can also be used to fix the shape of the wood fiber.
難燃剤を含ませた木質繊維は、高周波乾燥や熱風乾燥により所要の含水率まで乾燥させる。難燃剤を含んだ木質繊維を、難燃性接着剤または難燃性接着剤を含む接着剤を用いて圧縮成形し、目的とする難燃性木質繊維板を得る。 The wood fiber containing the flame retardant is dried to a required moisture content by high-frequency drying or hot air drying. A wood fiber containing a flame retardant is compression-molded using a flame retardant adhesive or an adhesive containing a flame retardant adhesive to obtain a target flame retardant wood fiber board.
難燃性接着剤（耐火性接着剤とも称す）としては、例えば主成分として水ガラス（別名 珪酸ソーダ）を含有するものや、少なくともシロキサンとシラノール塩とからなる無機材料を含有するものが好ましい。 As the flame retardant adhesive (also referred to as a fire resistant adhesive), for example, an adhesive containing water glass (also known as sodium silicate) as a main component or an inorganic material composed of at least siloxane and a silanol salt is preferable.
水ガラスを含有するものの例としては、水ガラス６０〜７０重量部、タルク３０〜４０重量部、ポリオレフィン合成パルプ１〜２重量部（合計１００重量部）を成分とする難燃性接着剤（固形分濃度は４９重量％、軟度が３０）を挙げることができる。 Examples of those containing water glass include flame retardant adhesives (solid) containing 60 to 70 parts by weight of water glass, 30 to 40 parts by weight of talc, and 1 to 2 parts by weight of polyolefin synthetic pulp (100 parts by weight in total). The partial concentration is 49% by weight, and the softness is 30).
シロキサンとシラノール塩とからなる無機材料を含有する難燃性接着剤としては、ホウ酸化合物やフッ化物等の無機酸の存在下で、金属ケイ素（純度９９％）と水酸化ナトリウムとを水溶媒中で反応させることで生成したものが好ましい。そして、このような無機材料は、Ｓi/Ｎaの成分比が２以上であり、アモルファス状でｐＨが１２以下、硬度５００ｃＰ（mPa・s）以下の低粘性を有する材料であり、例えば市販品である「リキッドセラミックス（ＬＣ）シリカ系」（商品名、株式会社コーミックス社製）を使用することができる。 As a flame retardant adhesive containing an inorganic material composed of siloxane and silanol salt, metal silicon (purity 99%) and sodium hydroxide are used as an aqueous solvent in the presence of an inorganic acid such as a boric acid compound or fluoride. What was produced | generated by making it react in is preferable. Such an inorganic material is a material having a Si / Na component ratio of 2 or more, an amorphous material having a pH of 12 or less, and a low viscosity of 500 cP (mPa · s) or less. A certain “liquid ceramics (LC) silica type” (trade name, manufactured by Commix Co., Ltd.) can be used.
このシロキサンとシラノール塩とからなる無機材料を含有させることにより、火災等の発生時に比較的高い温度で加熱されることで無機発泡体となり、優れた断熱性能を発揮する共に、優れた防水性能を発揮する。 By including this inorganic material consisting of siloxane and silanol salt, it becomes an inorganic foam when heated at a relatively high temperature in the event of a fire, etc., and exhibits excellent heat insulation performance and excellent waterproof performance Demonstrate.
難燃性接着剤として水ガラスを主成分としたもの使用した場合、水ガラスが耐水性に劣るため（空気中の水分と接触することで、その接着性が低下するため）、圧縮成形後の板表面に防水性を有するシートまたはフィルムを被覆することが好ましい。これにより、難燃性木質繊維板の内部に空気中の水分が浸透することを防止でき、水ガラスが耐水性に劣る欠点を解決できる。 When water glass is the main component used as a flame retardant adhesive, the water glass is inferior in water resistance (because its adhesiveness is reduced by contact with moisture in the air). It is preferable to coat the sheet surface with a waterproof sheet or film. Thereby, it can prevent that the water | moisture content in the air osmose | permeates the inside of a flame-retardant wood fiber board, and can solve the fault that water glass is inferior to water resistance.
ただし、直接空気と接触しないような使用方法であれば、防水性を有するシートまたはフィルムを省略することもできる。具体例としては、難燃性木質繊維板を防火扉の内部に埋設して使用し、しかも扉表面をウレタン塗装などで保護する場合等である。 However, a waterproof sheet or film can be omitted as long as the method does not directly contact air. As a specific example, there is a case where a flame-retardant wood fiberboard is embedded in a fireproof door and the door surface is protected with urethane coating or the like.
木質繊維を圧縮成形するために使用する接着剤としては、上記したような難燃性の接着剤の他に、メラミン樹脂系接着剤、尿素樹脂系接着剤、フェノール樹脂系接着剤、イソシアネート・酢酸ビニル樹脂系接着剤、エポキシ樹脂系接着剤等の他の接着剤を混合して使用することもできる。 Adhesives used for compression molding wood fibers include flame retardant adhesives as described above, melamine resin adhesives, urea resin adhesives, phenol resin adhesives, isocyanate / acetic acid Other adhesives such as a vinyl resin adhesive and an epoxy resin adhesive can be mixed and used.
また、難燃性木質繊維板の耐火性を高めるために、その表面を例えば珪酸マグネシウムを用いた不燃紙で被覆することもできる。なお、不燃紙で被覆した難燃性木質繊維板の表面を、更に上記した防水性を有するシートまたはフィルムで被覆することもできる。 Moreover, in order to improve the fire resistance of a flame-retardant wood fiber board, the surface can also be coat | covered with the nonflammable paper which used magnesium silicate, for example. In addition, the surface of the flame-retardant wood fiber board coated with non-combustible paper can be further coated with the above-described waterproof sheet or film.
本発明は上記構成を備え、次の効果を有する。
（ａ）本発明によれば、難燃剤を含んだ木質繊維を、難燃性接着剤または難燃性接着剤を含む接着剤を用いて圧縮成形することにより、全体的に均一で優れた耐火性能を備えた難燃性木質繊維板を比較的容易に製造することができる。
The present invention has the above-described configuration and has the following effects.
(A) According to the present invention, a wood fiber containing a flame retardant is compression-molded using a flame retardant adhesive or an adhesive containing a flame retardant adhesive, so that the overall fire resistance is uniform and excellent. A flame-retardant wood fiberboard having performance can be manufactured relatively easily.
（ｂ）水ガラスを主成分とする難燃性接着剤を用いて圧縮成形されており、板の表面を防水性を有するシートまたはフィルムで被覆されているものでは、難燃性木質繊維板の内部に水分が浸透することを防止できるので、難燃性接着剤に含まれる水ガラスの耐水性に劣る欠点を改善することができる。 (B) It is compression molded using a flame retardant adhesive mainly composed of water glass, and the surface of the plate is covered with a waterproof sheet or film. Since it is possible to prevent moisture from penetrating into the interior, it is possible to improve the disadvantage of water glass inferior in water resistance contained in the flame retardant adhesive.
以下、本発明を実施例により説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited to these.
杉の間伐材の外皮を除いた後、断裁して、３〜５ｃｍの大きさの木質チップとした。この木質チップをリファイナーで解繊し、木質繊維とした。 After removing the cedar thinning bark, it was cut into wooden chips of 3-5 cm in size. The wood chips were defibrated with a refiner to obtain wood fibers.
この木質繊維を難燃剤を含む水溶液に浸漬して、木質繊維に難燃剤を含浸（ディッピング処理）させた。本実施例では、難燃剤としてポリリン酸アンモニウムを含有する難燃剤（商品名「JERICO MF」、株式会社日本環境研究所製）を用いた。詳しくは、水１００ｇ（２０℃）に対して難燃剤３０ｇ（ポリリン酸アンモニウムの含有率は１５重量％）を溶解し、難燃剤を含む水溶液とした。浸漬時間は、常温（２０〜２５℃）において３０分とした。 This wood fiber was immersed in an aqueous solution containing a flame retardant, and the wood fiber was impregnated with a flame retardant (dipping treatment). In this example, a flame retardant containing ammonium polyphosphate (trade name “JERICO MF”, manufactured by Japan Environmental Research Institute, Ltd.) was used as a flame retardant. Specifically, 30 g of a flame retardant (the content of ammonium polyphosphate is 15% by weight) is dissolved in 100 g of water (20 ° C.) to obtain an aqueous solution containing the flame retardant. The immersion time was 30 minutes at room temperature (20 to 25 ° C.).
含浸後、木質繊維を脱水し、高周波乾燥機で乾燥処理（例えば５〜６分／m3）して含水率を７〜８％に調整した。次いで、混合機内で木質繊維８０重量部に対し、難燃性接着剤１０重量部とメラミン樹脂接着剤１０重量部を添加・混合した。本実施例で使用した難燃性接着剤は、水ガラス６０重量部、タルク３９重量部、ポリオレフィン合成パルプ１重量部を成分とし、固形分濃度４９重量％、軟度３０であり、具体的には、商品名「キルボンド」（株式会社エーアンドエーマテリアル製）を使用した。 After impregnation, the wood fiber was dehydrated and dried with a high-frequency dryer (for example, 5 to 6 minutes / m 3 ) to adjust the water content to 7 to 8%. Next, 10 parts by weight of a flame retardant adhesive and 10 parts by weight of a melamine resin adhesive were added to and mixed with 80 parts by weight of wood fibers in a mixer. The flame-retardant adhesive used in this example is composed of 60 parts by weight of water glass, 39 parts by weight of talc, and 1 part by weight of polyolefin synthetic pulp, and has a solid content concentration of 49% by weight and a softness of 30. Used the trade name “Kill Bond” (manufactured by A & A Materials Co., Ltd.).
接着剤を混合した木質繊維を空気フォーミング法により、エンドレスロールプレスの金属ベルト上でチップマットを形成し、これをホットプレスに投入して１３０℃で１〜２分間（プレス圧力は１０〜１５kg/cm2）、熱圧成形して目的とする難燃性木質繊維板（例えば９００×２１００mm、厚さ６mm）を作製し、これを実施例１とした。得られた難燃性木質繊維板は、中比重ファイバーボード（ＭＤＦ）と同等の品質を有していた。 The wood fiber mixed with the adhesive is formed into a chip mat on a metal belt of an endless roll press by an air forming method, and this is put into a hot press at 130 ° C. for 1 to 2 minutes (press pressure is 10 to 15 kg / cm 2 ) and hot-press molding to produce a target flame-retardant wood fiber board (for example, 900 × 2100 mm, thickness 6 mm). The obtained flame-retardant wood fiberboard had the same quality as medium specific gravity fiberboard (MDF).
［比較例１］
木質繊維に難燃剤を含浸させないことと、木質繊維に混合する接着剤として難燃性接着剤を用いないこと以外は、実施例１と同様な製法により木質繊維板を作製し、これを比較例１とした。木質繊維に混合する接着剤は、メラミン樹脂接着剤（木質繊維８０重量部に対して２０重量部を添加）を使用した。
[Comparative Example 1]
Except not impregnating a wood fiber with a flame retardant and not using a flame retardant adhesive as an adhesive mixed with the wood fiber, a wood fiber board is produced by the same production method as in Example 1, and this is a comparative example. It was set to 1. As an adhesive to be mixed with the wood fiber, a melamine resin adhesive (20 parts by weight added to 80 parts by weight of the wood fiber) was used.
［比較例２］
木質繊維に混合する接着剤として難燃性接着剤を用いないこと以外は、実施例１と同様な製法により木質繊維板を作製し、これを比較例２とした。木質繊維に混合する接着剤は、メラミン樹脂接着剤（木質繊維８０重量部に対して２０重量部を添加）を使用した。
[Comparative Example 2]
A wood fiber board was produced by the same production method as in Example 1 except that a flame retardant adhesive was not used as the adhesive mixed with the wood fiber, and this was used as Comparative Example 2. As an adhesive to be mixed with the wood fiber, a melamine resin adhesive (20 parts by weight added to 80 parts by weight of the wood fiber) was used.
（耐火試験）
実施例１に係る難燃性木質繊維板と、比較例１及び比較例２に係る木質繊維板を用いて、８００℃、３０分間の耐火試験を行った。その結果、実施例１では耐火時間が３０分と長く、優れた耐火性能を示した。これに対し、比較例１では耐火時間が９０秒、比較例２では耐火時間が２０分と、いずれも実施例１よりも劣るものであった。
(Fire resistance test)
Using the flame-retardant wood fiber board according to Example 1 and the wood fiber boards according to Comparative Example 1 and Comparative Example 2, a fire resistance test at 800 ° C. for 30 minutes was performed. As a result, in Example 1, the fireproof time was as long as 30 minutes, and excellent fireproof performance was exhibited. On the other hand, in Comparative Example 1, the fireproof time was 90 seconds, and in Comparative Example 2, the fireproof time was 20 minutes, both of which were inferior to Example 1.
実施例１と同様にして難燃性木質繊維板を作製し、その表裏面に難燃性接着剤（商品名「キルボンド」、株式会社エーアンドエーマテリアル製）を用いて防水性を有するシートを被覆した。使用したシートは、防火性も高い「Ｖ．Ｓシート」（商品名、株式会社トッパン・コスモ製）４０μｍである。このような構成により、難燃性木質繊維板の内部に空気中の水分が浸透することを防止できる。よって、難燃性接着剤に含まれる水ガラスの耐水性に劣る欠点を改善することができた。 A flame-retardant wood fiberboard was produced in the same manner as in Example 1, and a waterproof sheet was coated on the front and back surfaces using a flame-retardant adhesive (trade name “Kill Bond”, manufactured by A & A Materials Co., Ltd.). . The used sheet is “VS sheet” (trade name, manufactured by Toppan Cosmo Co., Ltd.) 40 μm, which has high fire resistance. With such a configuration, it is possible to prevent moisture in the air from penetrating into the flame-retardant wood fiberboard. Therefore, the fault which is inferior to the water resistance of the water glass contained in a flame-retardant adhesive agent was able to be improved.
実施例１と同様にして難燃性木質繊維板を作製し、その表裏面に難燃性接着剤（商品名「キルボンド」、株式会社エーアンドエーマテリアル製）を用いて不燃紙を被覆し、これを実施例３とした。使用した不燃紙は、珪酸マグネシウムを用いた不燃紙（厚さ０．２７ｍｍ）である。 A flame-retardant wood fiberboard was prepared in the same manner as in Example 1, and the front and back surfaces were coated with non-flammable paper using a flame-retardant adhesive (trade name “Kill Bond”, manufactured by A & A Materials Co., Ltd.). Example 3 was adopted. The non-combustible paper used is non-combustible paper (thickness 0.27 mm) using magnesium silicate.
この実施例３に係る難燃性木質繊維板を用いて、８００℃、６０分間の耐火試験を行った。その結果、実施例３は耐火時間が６０分と長く、優れた耐火性能を示した。 Using the flame-retardant wood fiber board according to Example 3, a fire resistance test at 800 ° C. for 60 minutes was performed. As a result, Example 3 showed a long fireproof time of 60 minutes and an excellent fireproof performance.
なお、本明細書で使用している用語と表現はあくまで説明上のものであって、限定的なものではなく、上記用語、表現と等価の用語、表現を除外するものではない。
Note that the terms and expressions used in this specification are merely explanatory and are not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions.
Claims (3)
難燃性木質繊維板。 A wood fiber containing a flame retardant is formed by compression molding using a flame retardant adhesive.
Flame retardant wood fiberboard.
難燃性木質繊維板。 A wood fiber containing a flame retardant is compression molded using a flame retardant adhesive mainly composed of water glass, and the surface of the plate is covered with a waterproof sheet or film. To
Flame retardant wood fiberboard.
難燃性木質繊維板の製造方法。 Flame retardant solution containing flame retardant in wood fiber, flame retardant wood fiber is compression-molded using a flame retardant adhesive mainly composed of water glass, and plate after compression molding The surface is covered with a waterproof sheet or film,
A method for producing a flame-retardant wood fiberboard.
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| JP2007008000A (en) * | 2005-06-30 | 2007-01-18 | Yoji Kikata | Molded body made of wood-based material and method for producing the same |
| JP2008023773A (en) * | 2006-07-19 | 2008-02-07 | Toyota Auto Body Co Ltd | Moisture-proof fiberboard and its manufacturing process |
| CN102179858A (en) * | 2011-03-17 | 2011-09-14 | 河南森远科技有限公司 | Adding process and adding device for flame retardant in the making process of flame retardant wood fiber board |
| JP2012081603A (en) * | 2010-10-07 | 2012-04-26 | Ars Inc | Flame retardant wood, quasi-noncombustible wood, and noncombustible wood |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007008000A (en) * | 2005-06-30 | 2007-01-18 | Yoji Kikata | Molded body made of wood-based material and method for producing the same |
| JP2008023773A (en) * | 2006-07-19 | 2008-02-07 | Toyota Auto Body Co Ltd | Moisture-proof fiberboard and its manufacturing process |
| JP2012081603A (en) * | 2010-10-07 | 2012-04-26 | Ars Inc | Flame retardant wood, quasi-noncombustible wood, and noncombustible wood |
| CN102179858A (en) * | 2011-03-17 | 2011-09-14 | 河南森远科技有限公司 | Adding process and adding device for flame retardant in the making process of flame retardant wood fiber board |
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| CN104608230A (en) * | 2015-01-12 | 2015-05-13 | 信阳美丽真好秸秆新材科技有限公司 | Non-wood fiber flame retardant artificial board and manufacturing method thereof |
| KR101604217B1 (en) * | 2015-12-26 | 2016-03-21 | 김금환 | Flame retardant and moisture-enhanced wood board and manufacturing method thereof |
| CN108789757A (en) * | 2018-06-28 | 2018-11-13 | 广东皇田环保科技有限公司 | The manufacture craft of high-density solid wood particle plank |
| JP2020066935A (en) * | 2018-10-25 | 2020-04-30 | 大建工業株式会社 | Non-combustible wood |
| CN115972328A (en) * | 2022-12-13 | 2023-04-18 | 浙江农林大学 | Preparation method of high-strength flame-retardant wood with fire early warning function |
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