CN115464740A - Waterproof high-density fiberboard and preparation method thereof - Google Patents
Waterproof high-density fiberboard and preparation method thereof Download PDFInfo
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- CN115464740A CN115464740A CN202211326076.4A CN202211326076A CN115464740A CN 115464740 A CN115464740 A CN 115464740A CN 202211326076 A CN202211326076 A CN 202211326076A CN 115464740 A CN115464740 A CN 115464740A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/12—Moulding of mats from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The application provides a waterproof high-density fiberboard and a preparation method thereof, which comprises the steps of putting plant raw materials into a cooking vat for cooking; uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry; drying the mixed fiber slurry, and adding the waterproof powder, the urea-formaldehyde resin with the solid content of 40-50%, ammonium chloride, aluminum hydroxide powder with the particle size of 200-500 meshes and the synergist into the mixed fiber slurry in the drying process to obtain a dried fiber slurry; paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished fiber board; and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with a coating thickness of 0.3-0.6 mm, and airing to obtain a waterproof high-density fiberboard finished product. The prepared high-density fiberboard has good waterproof effect, is not easy to damp and has long service life.
Description
Technical Field
The application relates to the technical field of fiber boards, in particular to a waterproof high-density fiber board and a preparation method thereof.
Background
High Density boards (wood) are one type of Board material and are classified into low Density, medium Density, and High Density according to Density. The fiber density board, the plywood density board, the shaving density board and the like can be divided according to raw materials.
The fiber density board is made by soaking wood, tree branches and other objects in water, crushing and pressing, and is an artificial board made of wood fibers or other plant fibers as raw materials and applying urea-formaldehyde resin or other suitable adhesives. The fiber density board has the characteristics of fine material, flat surface, smoothness, beauty and the like, and can be used for various finishing processing.
However, the waterproof effect of the high-density fiber board on the market is usually not ideal, and the high-density fiber board is easy to be soaked in water and wet in a humid environment, so that the board is swelled and deformed and mildewed.
Disclosure of Invention
The embodiment of the application provides a preparation method of waterproof high-density fiberboard, and the prepared high-density fiberboard has the advantages of good waterproof effect, difficulty in wetting and long service life. The method comprises the following steps:
step 1: putting the plant raw material into a cooking jar for cooking, controlling the cooking pressure to be 0.8-0.9 Mpa, the cooking temperature to be 80-130 ℃, and performing mechanical defibration after cooking for 5-10 min to obtain the plant fiber raw material;
step 2: uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry;
and step 3: drying the mixed fiber slurry, and adding waterproof powder, urea-formaldehyde resin with the solid content of 40-50%, ammonium chloride, aluminum hydroxide powder with the granularity of 200-500 meshes and a synergist into the mixed fiber slurry in the drying process to obtain a dried fiber slurry;
and 4, step 4: paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished fiber board;
and 5: and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with the thickness of 0.3-0.6 mm, and airing to obtain a waterproof high-density fiberboard finished product.
According to the preparation method of the waterproof high-density fiberboard, the prepared high-density fiberboard is good in waterproof effect and not prone to being affected with damp. In addition, the high-density fiberboard prepared by the method also has excellent flame retardant property, and the service life and the use effect of the fiberboard are effectively ensured.
In one possible embodiment, the method for preparing the waterproof high-density fiberboard provided in the examples of the present application includes mixing one or more of poplar wood chips, pine wood chips, straw and straw.
In one possible implementation manner, in the preparation method of the waterproof high-density fiberboard provided in the example of the present application, in the step 2, by mass, the plant fiber raw material is 85 parts to 100 parts, the first mixed solution is 10 parts to 15 parts, and the second mixed solution is 0.5 part to 1.5 parts.
In one possible implementation manner, in the preparation method of the waterproof high-density fiberboard provided in the example of the present application, in the step 3, calculated by mass, 85 parts to 100 parts of the mixed slurry, 0.5 part to 1.5 parts of the waterproof powder, 5 parts to 10 parts of the urea-formaldehyde resin, 1 part to 3 parts of ammonium chloride, 10 parts to 20 parts of aluminum hydroxide powder, and 1 part to 3 parts of the synergist are calculated.
In one possible implementation manner, in the preparation method of the waterproof high-density fiberboard provided in the embodiment of the present application, the first mixed solution is obtained by uniformly mixing the polyacrylate emulsion and the styrene-butadiene emulsion, which have the solid content ratio of 4:1, and adding water to adjust the concentration of the first mixed solution to 12% to 20%.
In one possible implementation manner, in the preparation method of the waterproof high-density fiberboard provided in the embodiment of the present application, the second mixed solution is a melamine aqueous solution with a solid content ratio of 4:1 and a polyamide epichlorohydrin resin, and after the melamine aqueous solution and the polyamide epichlorohydrin resin are uniformly mixed, water is added to the second mixed solution to adjust the concentration of the melamine aqueous solution to 8% -15%.
In one possible implementation manner, the waterproof powder is prepared by mixing dicyandiamide and melamine in a mass ratio of 1:1.
In one possible implementation manner, the synergist is prepared by mixing 15 parts to 20 parts by mass of ammonium polyphosphate, 15 parts to 20 parts by mass of zinc borate and 5 parts to 10 parts by mass of titanium dioxide.
In one possible implementation manner, the waterproof flame-retardant coating is prepared by mixing 5 parts to 10 parts by mass of ammonium polyphosphate, 2 parts to 3 parts by mass of pentaerythritol, and 4 parts to 6 parts by mass of fluorine-containing polyacrylate.
The embodiment of the application also provides a waterproof high-density fiberboard prepared by the preparation method of the waterproof high-density fiberboard.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example one
The preparation method of the waterproof high-density fiberboard comprises the following steps:
step 1: the plant fiber raw material is placed into a cooking jar for cooking, the cooking pressure is controlled to be 0.8Mpa, the cooking temperature is controlled to be 80 ℃, and mechanical defibration is carried out after cooking for 5min, so as to obtain the plant fiber raw material.
Wherein the plant material comprises one or more of poplar wood chip, pine wood chip, straw and straw.
Step 2: uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry;
wherein, in the step 2, the plant fiber raw material is 85 parts by mass, the first mixed solution is 10 parts by mass, and the second mixed solution is 0.5 part by mass.
The first mixed solution is prepared by uniformly mixing polyacrylate emulsion and butylbenzene emulsion with the solid content ratio of 4:1, and adding water to the mixture until the concentration is 12%.
The second mixed solution is prepared by uniformly mixing the melamine aqueous solution with the solid content ratio of 4:1 and the polyamide-epichlorohydrin resin, and adding water to the mixture until the concentration of the mixture is 8%.
And step 3: and drying the mixed fiber slurry, and adding the waterproof powder, the urea-formaldehyde resin with the solid content of 40-50%, ammonium chloride, aluminum hydroxide powder with the granularity of 200 meshes and the synergist into the mixed fiber slurry in the drying process to obtain the dried fiber slurry.
Wherein, in the step 3, the mixed slurry is 85 parts, the waterproof powder is 0.5 part, the urea-formaldehyde resin is 5 parts, the ammonium chloride is 1 part, the aluminum hydroxide powder is 10 parts, and the synergist is 1 part by mass.
The waterproof powder is prepared by mixing dicyandiamide and melamine according to the mass ratio of 1:1.
The synergist is formed by mixing 15 parts of ammonium polyphosphate, 15 parts of zinc borate and 5 parts of titanium dioxide by mass.
And 4, step 4: and paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished product fiberboard.
And 5: and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with the coating thickness of 0.3mm, and airing to obtain a finished waterproof high-density fiberboard product.
The waterproof flame-retardant coating is prepared by mixing 5 parts by mass of ammonium polyphosphate, 2 parts by mass of pentaerythritol and 4 parts by mass of fluorine-containing polyacrylate.
Example two
The preparation method of the waterproof high-density fiberboard comprises the following steps:
step 1: the plant fiber raw material is placed into a cooking jar for cooking, the cooking pressure is controlled to be 0.9Mpa, the cooking temperature is controlled to be 130 ℃, mechanical defibration is carried out after 10min of cooking, and the plant fiber raw material is obtained.
Wherein the plant material comprises one or more of poplar wood chip, pine wood chip, straw and straw.
Step 2: uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry;
wherein, in the step 2, the plant fiber raw material is 100 parts, the first mixed solution is 15 parts, and the second mixed solution is 1.5 parts by mass.
The first mixed solution is prepared by uniformly mixing polyacrylate emulsion and butylbenzene emulsion with the solid content ratio of 4:1, and adding water to the mixture until the concentration is 20%.
The second mixed solution is prepared by uniformly mixing a melamine aqueous solution with the solid content ratio of 4:1 and polyamide epichlorohydrin resin, and adding water to the mixture until the concentration of the mixture is 15%.
And step 3: and drying the mixed fiber slurry, and adding the waterproof powder, the urea-formaldehyde resin with the solid content of 50%, ammonium chloride, aluminum hydroxide powder with the granularity of 500 meshes and the synergist into the mixed fiber slurry in the drying process to obtain the dried fiber slurry.
Wherein in the step 3, the mixed slurry is 100 parts by mass, the waterproof powder is 1.5 parts by mass, the urea-formaldehyde resin is 10 parts by mass, the ammonium chloride is 3 parts by mass, the aluminum hydroxide powder is 20 parts by mass, and the synergist is 3 parts by mass.
The waterproof powder is prepared by mixing dicyandiamide and melamine according to the mass ratio of 1:1.
The synergist is prepared by mixing 20 parts by mass of ammonium polyphosphate, 20 parts by mass of zinc borate and 10 parts by mass of titanium dioxide.
And 4, step 4: and paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished product fiberboard.
And 5: and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with the coating thickness of 0.6mm, and airing to obtain a finished waterproof high-density fiberboard product.
The waterproof flame-retardant coating is prepared by mixing 10 parts by mass of ammonium polyphosphate, 3 parts by mass of pentaerythritol and 6 parts by mass of fluorine-containing polyacrylate.
EXAMPLE III
The preparation method of the waterproof high-density fiberboard comprises the following steps:
step 1: the plant fiber raw material is placed into a cooking jar for cooking, the cooking pressure is controlled to be 0.85Mpa, the cooking temperature is controlled to be 105 ℃, and mechanical defibration is carried out after 7.5min of cooking, so as to obtain the plant fiber raw material.
Wherein the plant material comprises one or more of poplar wood chip, pine wood chip, straw and straw.
Step 2: uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry;
in the step 2, the plant fiber raw material is 92 parts, the first mixed solution is 12 parts, and the second mixed solution is 1 part by mass.
The first mixed solution is prepared by uniformly mixing polyacrylate emulsion and butylbenzene emulsion with the solid content ratio of 4:1, and adding water to the mixture until the concentration is 16%.
The second mixed solution is prepared by uniformly mixing the melamine aqueous solution with the solid content ratio of 4:1 and the polyamide-epichlorohydrin resin, and adding water to the mixture until the concentration of the mixture is 12%.
And step 3: and drying the mixed fiber slurry, and adding the waterproof powder, the urea-formaldehyde resin with the solid content of 43%, ammonium chloride, aluminum hydroxide powder with the granularity of 400 meshes and the synergist into the mixed fiber slurry in the drying process to obtain the dried fiber slurry.
Wherein, in the step 3, the mixed slurry is 90 parts by mass, the waterproof powder is 1 part by mass, the urea-formaldehyde resin is 7 parts by mass, the ammonium chloride is 2 parts by mass, the aluminum hydroxide powder is 15 parts by mass, and the synergist is 2 parts by mass.
The waterproof powder is prepared by mixing dicyandiamide and melamine according to the mass ratio of 1:1.
The synergist is formed by mixing 17 parts by mass of ammonium polyphosphate, 18 parts by mass of zinc borate and 7 parts by mass of titanium dioxide.
And 4, step 4: and paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished product fiberboard.
And 5: and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with the coating thickness of 0.4mm, and airing to obtain a finished waterproof high-density fiberboard product.
The waterproof flame-retardant coating is prepared by mixing 7 parts by mass of ammonium polyphosphate, 2.6 parts by mass of pentaerythritol and 5 parts by mass of fluorine-containing polyacrylate.
The terms first, second, third, fourth and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. For example, can be performed in an order other than those described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The preparation method of the waterproof high-density fiberboard is characterized by comprising the following steps of:
step 1: putting the plant raw material into a cooking jar for cooking, controlling the cooking pressure to be 0.8-0.9 Mpa, the cooking temperature to be 80-130 ℃, and performing mechanical defibration after cooking for 5-10 min to obtain the plant fiber raw material;
step 2: uniformly mixing the plant fiber raw material with the first mixed solution and the second mixed solution to obtain mixed fiber slurry;
and step 3: drying the mixed fiber slurry, and adding the waterproof powder, the urea-formaldehyde resin with the solid content of 40-50%, ammonium chloride, aluminum hydroxide powder with the particle size of 200-500 meshes and the synergist into the mixed fiber slurry in the drying process to obtain a dried fiber slurry;
and 4, step 4: paving and forming the dry fiber material, then performing prepressing and hot pressing, and cooling to obtain a semi-finished fiber board;
and 5: and uniformly coating the surface of the semi-finished fiberboard with a waterproof flame-retardant coating with a coating thickness of 0.3-0.6 mm, and airing to obtain a waterproof high-density fiberboard finished product.
2. The method for preparing a water-proof high-density fiberboard according to claim 1, wherein the plant material comprises one or a mixture of more of poplar wood chips, pine wood chips, straw and rice straw.
3. The method for preparing a waterproof high-density fiberboard of claim 1, wherein in the step 2, the plant fiber raw material is 85 to 100 parts by weight, the first mixed solution is 10 to 15 parts by weight, and the second mixed solution is 0.5 to 1.5 parts by weight.
4. The method for preparing the waterproof high-density fiberboard of claim 1, wherein in the step 3, the mixed slurry is 85 to 100 parts by mass, the waterproof powder is 0.5 to 1.5 parts by mass, the urea-formaldehyde resin is 5 to 10 parts by mass, the ammonium chloride is 1 to 3 parts by mass, the aluminum hydroxide powder is 10 to 20 parts by mass, and the synergist is 1 to 3 parts by mass.
5. The method for preparing the waterproof high-density fiberboard of claim 1, wherein the first mixed solution is a mixture of polyacrylate emulsion and butylbenzene emulsion with a solid content ratio of 4:1, which is mixed uniformly, and then water is added to the mixture to a concentration of 12-20%.
6. The method for preparing the waterproof high-density fiberboard of claim 1, wherein the second mixed solution is prepared by uniformly mixing the melamine aqueous solution with the solid content ratio of 4:1 and the polyamide epichlorohydrin resin, and adding water to the mixture to a concentration of 8% -15%.
7. The method for preparing the waterproof high-density fiberboard of claim 1, wherein the waterproof powder is formed by mixing dicyandiamide and melamine in a mass ratio of 1:1.
8. The preparation method of the waterproof high-density fiberboard of claim 1, wherein the synergist is prepared by mixing 15-20 parts by mass of ammonium polyphosphate, 15-20 parts by mass of zinc borate and 5-10 parts by mass of titanium dioxide.
9. The preparation method of the waterproof high-density fiberboard of claim 1, wherein the waterproof flame-retardant coating is prepared by mixing 5 to 10 parts by mass of ammonium polyphosphate, 2 to 3 parts by mass of pentaerythritol and 4 to 6 parts by mass of fluorine-containing polyacrylate.
10. A waterproof high-density fiberboard prepared by the method for preparing the waterproof high-density fiberboard of any one of claims 1 to 9.
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| CN202211326076.4A CN115464740A (en) | 2022-10-27 | 2022-10-27 | Waterproof high-density fiberboard and preparation method thereof |
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| CN202211326076.4A CN115464740A (en) | 2022-10-27 | 2022-10-27 | Waterproof high-density fiberboard and preparation method thereof |
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