CN1425541A - Medium density flame-retardant fibrous plate and its producing method - Google Patents
Medium density flame-retardant fibrous plate and its producing method Download PDFInfo
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- CN1425541A CN1425541A CN 02153877 CN02153877A CN1425541A CN 1425541 A CN1425541 A CN 1425541A CN 02153877 CN02153877 CN 02153877 CN 02153877 A CN02153877 A CN 02153877A CN 1425541 A CN1425541 A CN 1425541A
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Abstract
The invention relates to a medium density flame-retardant fibrous plate and its producing method, characterized that the method has the following steps: crushing wood materials of culled wood, sawdust, bark and the like to form wood fiber; soaking the wood fiber in a flame-retardant treatment; dehydrating the soaked wood fiber; hot drying the dehydrated wood fiber to crush the same; mixing the crushed wood fiber with an adhesive and drying the mixture; thermocompressing the dry mixture to form the medium density flame-retardant fibrous plate(1); cutting off the forming medium density flame-retardant fibrous plate(1), which surfaces are grinded and coated with the flame-retardant treatment having flame-retardant component, thereby, three grade flame-retardant fibrous layers (3) are formed within the medium density fibrous plate, and two grade flame-retardant fibrous layers (4, 4') are formed in two surfaces thereof, thus flame-spreading can be prevented by the medium density fibrous plate while in a fire.
Description
Technical field
Density flame-retardant fiber board and manufacture method thereof in the present invention relates in more detail, are by the wood-fibred of forming the medium density fibre board (MDF) principal component is soaked in the fire-retardant treatment liquid that contains flame-retardant composition density flame-retardant fiber board in the manufacturing; The fire-retardant treatment liquid that contains flame-retardant composition by coating on the density flame-retardant fiber board surface in above-mentioned, form 3 grades of fire resistance fibre layers at the medium density fiber intralamellar part, form 2 grades of fire resistance fibre layers respectively on two surfaces, fire spread when making medium density fibre board (MDF) stop the fire generation thus prevents the generation of large-sized fire accident.
Prior art
Fiberboard is the wood based panel of the neomorph of nineteen sixties exploitation, is by the pulverizing down of wood materials high temperature such as culled wood, sawdust, bark, makes wood-fibred, and connects the wood based panel goods made from adhesive.Situation of classifying according to the density of fiberboard among the KSF3200 such as following table 1.
Table 1:
| Kind | Mark | Density |
| Softboard | IB | Not enough 0.35g/cm 3 |
| Medium density fibre board (MDF) | MDF | 0.35～0.85g/cm 3 |
| Hardboard | HB | 0.85g/cm 3More than |
Above-mentioned medium density fibre board (MDF) according to its anti-flammability, is divided into fire-retardant 2 grades and 3 grades, and wherein anti-flammability is good more, density is big more, color is bright more, will be confirmed as high-quality fiberboard.
In general, medium density fibre board (MDF) is extensive use of as furniture material with its low price and high strength.But these medium density fibre board (MDF)s have the characteristic that fire is prevented ability because of its material, so its usability is restricted.
For solving the above-mentioned problem that fire is prevented the medium density fibre board (MDF) of ability, develop the goods of giving anti-flammability on the medium density fibre board (MDF) in recent years in a large number, density flame-retardant fiber board is to add fire proofing such as mineral wool, asbestos etc. at the medium density fiber intralamellar part in these, or forms flame-retardant layer on the medium density fibre board (MDF) surface.
But, the inner medium density fibre board (MDF) that adds mineral wool as fire proofing, asbestos etc., its surface is just wooden, therefore catch fire easily during breaking out of fire, simultaneously, the inner mineral wool that adds, asbestos etc. produce toxic gas when catching fire, and threaten the human life more, and very difficult spontaneous corrosion such as mineral wool, asbestos when discarded, so it is big to handle the expense of discarded object.
The medium density fibre board (MDF) surface forms the middle density flame-retardant fiber board of flame-retardant layer, the flame-retardant layer afterignition on surface when though fire takes place, but after burning the surface flame-retardant layer, the pure wooden of medium density fiber intralamellar part caught fire easily, therefore should before flame-retardant layer is burnt, put out a fire, but fire when taking place according to a lot of situations, the possibility of fire extinguishing was zero no better than before flame-retardant layer was burnt, therefore such template can not fully stop fire, can cause the large-sized fire accident.
That has made impregnation in mixed solutions such as potash, sodium chloride among the Japanese kokai publication hei 9-286984, soaks into, adheres to or adsorbed structure material does not fire inorganic agent, but the manufacture method of structure material is made in impregnation, the time that its impregnation needs is long, so the productivity of structure material descends; And soak into or adhere to the manufacture method of making structure material, only forming and do not fire layer on the structure material surface, structure material inside is not soaked into and is not fired inorganic agent.
In addition, disclose among the korean patent application numbering 1999-7012327 and will be injected in the method for building material surface with 2～3mm thickness by the reactant liquor of potassium hydroxide, sodium carbonate and metallic silicon and water reaction gained, but this method also is only to form on the structure material surface not fire layer, do not fire inorganic agent and be not impregnated into structure material inside, and the expense height of raw material such as metallic silicon, thereby manufacturing cost rises.
Summary of the invention
Therefore, add fire proofing such as mineral wool, asbestos etc. for solving above-mentioned medium density fiber intralamellar part, or medium density fibre board (MDF) surface form flame-retardant layer in the past in the problem that has of density flame-retardant fiber board, the purpose of this invention is to provide a kind of middle density flame-retardant fiber board, it is characterized in that by the wood-fibred of forming the medium density fibre board (MDF) principal component is soaked in the fire-retardant treatment liquid density flame-retardant fiber board in the manufacturing; By being coated with fire-retardant treatment liquid on two surfaces of density flame-retardant fiber board in above-mentioned, form 3 grades of fire resistance fibre layers at the medium density fiber intralamellar part, form 2 grades of fire resistance fibre layers respectively on two surfaces; 2 grades of right fibrages of resistance of medium density fibre board (MDF) surface formation stop the fire spread when fire takes place thus, and after above-mentioned 2 grades of right fibrages of resistance are burnt, also 3 grades of fire resistance fibre layers that formed by the medium density fiber intralamellar part stop fire, prevent the generation of large-sized fire accident.
Density flame-retardant fiber board and manufacture method thereof in the present invention relates in more detail, is characterized in that described method comprises: wood materials such as culled wood, sawdust, bark are pulverized made wood-fibred; Above-mentioned wood-fibred in being the fire-retardant treatment liquid of sodium chloride and sodium acid carbonate mixture, flame-retardant composition is soaked into (S100); The wood-fibred that has soaked into is carried out processed (S110); The wood-fibred of dehydration is carried out heated drying (S120); The wood-fibred of heated drying is pulverized (S130); The wood-fibred of pulverizing is mixed (S140) with adhesive with 10: 1 to 10: 2 weight ratio; With this mixture drying (S150); With temperature and the 30～50kg/cm of dried mixture at 180～240 ℃
2Pressure under hot compression be configured as in density flame-retardant fiber board 1 (S160); The middle density flame-retardant fiber board 1 that is shaped is cut off (S170); With the surface of the middle density flame-retardant fiber board 1 that cuts off polish (S180).
In addition, be the anti-flammability of density flame-retardant fiber board in further improving, outside above-mentioned steps, also increase the step (S190) that two surfaces of described middle density flame-retardant fiber board 1 of having polished is coated with the flame retardant treating agent of the flame-retardant composition that contains sodium chloride and sodium acid carbonate mixture.
Brief description of drawings
Fig. 1 represents the flow chart making by the middle density flame-retardant fiber board of manufacture method manufacturing of the present invention.
Fig. 2 represents the fragmentary cross-sectional view of the middle density flame-retardant fiber board that the present invention makes.
Fig. 3 represents the fragmentary cross-sectional view of the middle density flame-retardant fiber board typical case that the present invention makes.
The symbol description of major part in the accompanying drawing
1: middle density flame-retardant fiber board, 2: form the middle density flame-retardant fiber board of 2 grades of fire resistance fibre layers on the surface, 3:3 level fire resistance fibre layer, 4,4 ': 2 grades of fire resistance fibre layers
The specific embodiment
For making the personnel that have common knowledge in the technology of the present invention field implement the present invention easily, describe exemplary embodiments of the present invention with reference to the accompanying drawings in detail.
Fig. 1 represents the flow chart making by the middle density flame-retardant fiber board of manufacture method manufacturing of the present invention.
Fig. 2 represents the fragmentary cross-sectional view of the middle density flame-retardant fiber board that the present invention makes.Fig. 3 represents the fragmentary cross-sectional view of the middle density flame-retardant fiber board typical case that the present invention makes.
Be in the step (S100) of soaking in the fire-retardant treatment liquid of sodium chloride and sodium acid carbonate mixture with described wood-fibred at flame-retardant composition, in described fire-retardant treatment liquid, soak into wood-fibred, therefore flame-retardant composition is impregnated in the wood-fibred, density flame-retardant fiber board 1 in the formation, wherein penetration period is preferred 3～10 minutes, if penetration period less than 3 minutes, flame-retardant composition can not fully soak into, and surpassing 10 minutes, the productivity of medium density fibre board (MDF) reduces.
Described fire-retardant treatment liquid is preferably with water 70～80 weight %, adhesive 5～10 weight %, the mixed proportion of flame-retardant composition 8～16 weight % mixes, and wherein said flame-retardant composition is that the mixed proportion with sodium chloride 70～80 weight % and sodium acid carbonate 20～30 weight % mixes.
The wood-fibred that has soaked into is carried out the step (S110) of processed, is the wood-fibred dehydration of soaking into, and reduces the step of wood-fibred water content, and wherein dewatering without limits.
Carry out in the step (S120) of heated drying at wood-fibred that will dehydration, baking temperature is 100～150 ℃, and is preferably dry rapidly, but drying means and on the time without limits.
With the step (S130) that the wood-fibred of heated drying is pulverized, be in soaking into (S100), dehydration (S110) and dry (S120) step, to become the wood-fibred of piece to pulverize, to improve the density of medium density fibre board (MDF) when being shaped thus.
In the wood-fibred that will pulverize and step (S140) that adhesive mixes with 10: 1 to 10: 2 weight ratio, when the mixing ratio deficiency of wood-fibred and adhesive in the time of 10: 1, bonding force deficiency during shaping, the intensity of the medium density fibre board (MDF) (1) that is shaped descends, and above 10: 2 o'clock, though the medium density fibre board (MDF) intensity that is shaped is good, flexibility is poor, easy fracture.
In mixture drying steps (S150), the mixture of dry wood-fibred and adhesive improves the bonding force of adhesive thus, wherein drying means and on the time without limits.
With temperature and the 30～50kg/cm of dried mixture at 180～240 ℃
2Pressure under hot compression be configured as in the step (S160) of density flame-retardant fiber board 1, preferred, but be not limited to, making thickness is the middle density flame-retardant fiber board 1 of 3～30mm.
In the step (S170) that the middle density flame-retardant fiber board 1 that will be shaped cuts off, be the application target of density flame-retardant fiber board 1 in the basis, cut into suitable size, wherein the form of Qie Duaning is without limits.
With the step of polishing in the surface of the middle density flame-retardant fiber board 1 that cuts off (S180), be the surface of density flame-retardant fiber board in the polishing, to improve texture.
Coating contains the step (S190) of the flame retardant treating agent of flame-retardant composition on the surface of the middle density flame-retardant fiber board 1 of having polished, be on two surfaces that are exposed to the middle density flame-retardant fiber board 1 in the fire easily, to carry out flame treatment again, to improve the step of anti-flammability, form 2 grades of fire resistance fibre layers 4,4 ' on two surfaces of middle density flame-retardant fiber board 1 thus.
Described flame retardant treating agent preferably uses and contains 50～65 weight % water, the mixture of 15～25 weight % adhesives and 20～35 weight % flame-retardant compositions, the flame-retardant composition that wherein is used for flame retardant treating agent preferably use the mixture that contains 70～80 weight % sodium chloride and 20～30 weight % sodium acid carbonates.
A composition in the described flame-retardant composition---sodium chloride (NaCl) is the principal component of the salt that family uses in our daily life, harmless, it has the hygroscopicity that absorbs moisture and dissolve in air, therefore, form fine film, can cut off oxygen on the wood-fibred surface of medium density fibre board (MDF) principal component, prevent to catch fire, this external cause has bactericidal action, places medium density fibre board (MDF) in the place of high humidity, also can prevent the mouldy bacterial reproduction of Denging.
Another composition in the described flame-retardant composition---sodium acid carbonate (NaHCO
3) be the compound that is widely used in the fire extinguisher, same with sodium chloride, harmless, resolve into sodium carbonate (Na during heating
2CO
3), water (H
2O) and carbon dioxide (CO
2), sodium carbonate (Na in the accessory substance of decomposition
2CO
3), water (H
2O) and carbon dioxide (CO
2) can cut off oxygen, prevent that fire from taking place.
In addition, sodium acid carbonate has decolorization, can be the principal component of medium density fibre board (MDF)--and-wood-fibred decolours into bright color, and the color of brightening medium density fibre board (MDF) can produce high-quality medium density fibre board (MDF).
Described adhesive can use urea resin class, melamin resin class, phenolic resin class, gelatin, carboxymethyl cellulose (CMC) etc., wherein preferred gelatin and CMC.
Gelatin is a kind of of the derived protein that obtained by heat treatment from native protein collagen, and add water decomposition or hydrogenation by the peptide chain that exists in the collagen rupture and obtain, and dissolve into colloidal sol in warm water, at room temperature become the rubber-like gel, and bonding force is fine.
Carboxymethyl cellulose dissolves in water, becomes thick liquid, has very high bonding force, and has and self prevent character mouldy or corrosion, is not exposed to wet environment and worry that quality descends.
For further understanding the anti-flammability of middle density flame-retardant fiber board of the present invention, provide the following examples.
According to method disclosed by the invention, be respectively 220mm with length and width, thickness is that the size of 12mm is made middle density flame-retardant fiber board 1 (hereinafter referred to as fiberboard A) of the present invention, with the middle density flame-retardant fiber board 2 (hereinafter referred to as fiberboard B) that forms 2 grades of right fibrages 4,4 ' of resistance on two surfaces of middle density flame-retardant fiber board 1.
Embodiment 2
On the fiberboard A that makes by embodiment 1, carry out the surface test in the fire proofing material test method.
Main heat source is the electric heater that possesses the electrostatic pressure device, and secondary thermal source is a LP gas, and temperature shown in the following table 2 is reproduced with interior error with 20 ℃.
Table 2
| Elapsed time (minute) | ????1 | ????2 | ????3 | ????4 | ????5 | ????6 | ????7 | ????8 | ????9 | ????10 |
| EGT (℃) | ????70 | ????80 | ????90 | ????155 | ????205 | ????235 | ????260 | ????270 | ????290 | ????305 |
The heating surface size of fiberboard A and fiberboard B is length and width difference 180mm, and fiberboard A, heated 3 minutes with main heat source after 3 minutes with secondary thermal source heating, after fiberboard B heats 3 minutes with secondary thermal source, with main heat source heating 7 minutes.
The fiberboard A and the fiberboard B that implement above-mentioned steps only become the black wood charcoal form at heating surface, and fire extinguishing appears in fiberboard A in about 20 seconds after eliminating thermal source, and fire extinguishing appears in fiberboard B in about 15 seconds after eliminating thermal source.
Embodiment 3
On the fiberboard A and fiberboard B that make by embodiment 1, carry out the additional testing in the fire proofing material test method.
Fiberboard A and fiberboard B go up and bore the hole that penetrates into 3 diameter 25mm of back from surface separately, heat with embodiment 2 methods.
Implement the fiberboard A and the fiberboard B of above-mentioned steps, become the black wood charcoal form with 2 of embodiment at heating surface, fire extinguishing appears in fiberboard A in about 25 seconds after eliminating thermal source, and fire extinguishing appears in fiberboard B in about 25 seconds after eliminating thermal source.
As described in above-mentioned embodiment, middle density flame-retardant fiber board of the present invention forms 3 grades of fire resistance fibre layers 3 in medium density fibre board (MDF), form 2 grades of fire resistance fibre layers 4,4 ' on two surfaces, and medium density fibre board (MDF) catches fire in the time of therefore can preventing fire really.
The effect of invention
As mentioned above, middle density flame-retardant fiber board of the present invention is to contain in the fire-retardant treatment liquid that flame-retardant composition is sodium chloride and sodium acid carbonate mixture by the wood-fibred that forms the medium density fibre board (MDF) principal component is soaked in, density flame-retardant fiber board in the manufacturing, and by contain the fire-retardant treatment liquid of flame-retardant composition in the coating of two surfaces of described middle density flame-retardant fiber board, form 3 grades of fire resistance fibre layers at the medium density fiber intralamellar part, and at 2 grades of fire resistance fibre layers of two surface formation, fire spread when making thus medium density fibre board (MDF) stop the fire generation, improve the in the past use limitation of medium density fibre board (MDF), make the good goods of anti-flammability with cheap expense.
Claims (7)
1, a kind of manufacture method of middle density flame-retardant fiber board is characterized in that this method comprises: wood-fibred is made in the wood materials pulverizing that will comprise culled wood, sawdust, bark; Described wood-fibred in being the fire-retardant treatment liquid of sodium chloride and sodium acid carbonate mixture, flame-retardant composition is soaked into (S100); The wood-fibred that has soaked into is carried out processed (S110); The wood-fibred of dehydration is carried out heated drying (S120); The wood-fibred of heated drying is pulverized (S130); The wood-fibred of pulverizing is mixed (S140) with adhesive with 10: 1 to 10: 2 weight ratio; With this mixture drying (S150); With temperature and the 30～50kg/cm of dried mixture at 180～240 ℃
2Pressure under hot compression be configured as middle density flame-retardant fiber board (1) (S160); The middle density flame-retardant fiber board (1) that is shaped is cut off (S170); With the surface of the middle density flame-retardant fiber board (1) that cuts off polish (S180).
2, the manufacture method of the described middle density flame-retardant fiber board of claim 1 is characterized in that this method also comprises the steps (S190) that two surfaces of described middle density flame-retardant fiber board (1) of having polished are coated with the flame retardant treating agent of the flame-retardant composition that contains sodium chloride and sodium acid carbonate mixture.
3, the manufacture method of any described middle density flame-retardant fiber board in the claim 1 or 2 is characterized in that described flame-retardant composition is to be mixed by the sodium chloride of 70～80 weight % and the sodium acid carbonate of 20～30 weight %.
4, the manufacture method of the described middle density flame-retardant fiber board of claim 1, the fire-retardant treatment liquid that it is characterized in that being used to soaking into described wood-fibred is with water 70～80 weight %, adhesive 5～10 weight %, the mixed proportion of flame-retardant composition 8～16 weight % mixes.
5, the manufacture method of the described middle density flame-retardant fiber board of claim 2, the flame retardant treating agent that it is characterized in that being used to being coated on two surfaces of described medium density fibre board (MDF) of having polished (1) is with water 50～65 weight %, adhesive 15～25 weight %, the mixed proportion of flame-retardant composition 20～35 weight % mixes.
6, the manufacture method of any described middle density flame-retardant fiber board in the claim 1,4 or 5 is characterized in that described adhesive is gelatin or carboxymethyl cellulose.
7, a kind of middle density flame-retardant fiber board, it is characterized in that utilizing the wood materials pulverizing that will comprise culled wood, sawdust, bark in the medium density fibre board (MDF) that the wood-fibred of manufacturing is made, by described wood-fibred being soaked in the fire-retardant treatment liquid that contains flame-retardant composition, density flame-retardant fiber board in the manufacturing (1), and by the last flame retardant treating agents that are coated with in two surfaces of density flame-retardant fiber board (1) in described, thereby form 3 grades of fire resistance fibre layers (3) at the medium density fiber intralamellar part, and form 2 grades of fire resistance fibre layers (4) (4 ') on two surfaces.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10200179302 | 2001-12-14 | ||
| KR20010007930 | 2001-12-14 |
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|---|---|
| CN1425541A true CN1425541A (en) | 2003-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02153877 Pending CN1425541A (en) | 2001-12-14 | 2002-12-04 | Medium density flame-retardant fibrous plate and its producing method |
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| CN1330472C (en) * | 2003-10-23 | 2007-08-08 | 吉发 | Production process of regenerated medium density fiber board |
| CN101240651B (en) * | 2008-01-17 | 2010-08-11 | 中国林业科学研究院木材工业研究所 | Fire retardant floor and its manufacture method |
| CN101949112A (en) * | 2010-09-30 | 2011-01-19 | 甘肃赫原生物制品有限公司 | Method for preparing environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue |
| CN102001121A (en) * | 2010-10-20 | 2011-04-06 | 饶显生 | Method for producing bark mixed medium-density fiber plate |
| CN102139504A (en) * | 2011-01-05 | 2011-08-03 | 杨新芳 | Method of producing medium density fiberboard by the use of waste material |
| CN102642229A (en) * | 2007-05-30 | 2012-08-22 | 富士通株式会社 | Manufacturing method of compression molding product using plant materials |
| CN104290170A (en) * | 2014-10-13 | 2015-01-21 | 苏州东邦家具有限公司 | Pollution-free light solid wood board furniture |
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| CN1330472C (en) * | 2003-10-23 | 2007-08-08 | 吉发 | Production process of regenerated medium density fiber board |
| CN102642229A (en) * | 2007-05-30 | 2012-08-22 | 富士通株式会社 | Manufacturing method of compression molding product using plant materials |
| CN101240651B (en) * | 2008-01-17 | 2010-08-11 | 中国林业科学研究院木材工业研究所 | Fire retardant floor and its manufacture method |
| CN101949112A (en) * | 2010-09-30 | 2011-01-19 | 甘肃赫原生物制品有限公司 | Method for preparing environmentally-friendly flame retardant fiberboard by utilizing xylose waste residue |
| CN102001121A (en) * | 2010-10-20 | 2011-04-06 | 饶显生 | Method for producing bark mixed medium-density fiber plate |
| CN102139504B (en) * | 2011-01-05 | 2014-06-18 | 杨新芳 | Method of producing medium density fiberboard by the use of waste material |
| CN102139504A (en) * | 2011-01-05 | 2011-08-03 | 杨新芳 | Method of producing medium density fiberboard by the use of waste material |
| CN104290170A (en) * | 2014-10-13 | 2015-01-21 | 苏州东邦家具有限公司 | Pollution-free light solid wood board furniture |
| CN104385426A (en) * | 2014-10-13 | 2015-03-04 | 苏州东邦家具有限公司 | Dampproof artificial fiber board furniture |
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