CN113696297A - Floor board preparation process using composite material as core board and floor board - Google Patents
Floor board preparation process using composite material as core board and floor board Download PDFInfo
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- CN113696297A CN113696297A CN202110960412.XA CN202110960412A CN113696297A CN 113696297 A CN113696297 A CN 113696297A CN 202110960412 A CN202110960412 A CN 202110960412A CN 113696297 A CN113696297 A CN 113696297A
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- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 31
- 239000002025 wood fiber Substances 0.000 claims abstract description 31
- 239000002245 particle Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 239000010893 paper waste Substances 0.000 claims abstract description 24
- 239000002023 wood Substances 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 12
- 239000004626 polylactic acid Substances 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 6
- 238000007731 hot pressing Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005034 decoration Methods 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229920006037 cross link polymer Polymers 0.000 claims description 2
- 238000010894 electron beam technology Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000003825 pressing Methods 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 244000166124 Eucalyptus globulus Species 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 238000010335 hydrothermal treatment Methods 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 244000184861 Juglans nigra Species 0.000 description 2
- 235000013740 Juglans nigra Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000002761 deinking Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 238000006266 etherification reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
- 241000894007 species Species 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
-
- 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
- B27N1/00—Pretreatment of moulding material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention belongs to the technical field of floor processing, and relates to a floor preparation process taking a composite material as a core plate, which comprises the following steps: crushing and mixing polylactic acid particles, waste paper pulp particles, wood fibers and an auxiliary agent; putting into a co-rotating double-screw extruder, and extruding the mixture; placing a bottom plate below the inside of the shaping mold, injecting the mixture into the shaping mold, arranging a decorative panel above the mixture, cooling to room temperature, and forming a plate blank to be shaped; hot pressing to obtain a plate blank, cold pressing, maintaining, sanding two sides, and processing a matched groove and a matched tenon; and coating a transparent or semitransparent coating on the surface and the back of the floor, and cooling to obtain the floor. The invention fully utilizes waste resources such as waste paper, wood product excess material and the like, and the waste resources are thermoformed into the composite material and used as the core board of the floor. The process steps are simple, and the prepared composite floor meets the national standard requirements. The invention provides a feasible industrialization path for reasonable utilization of waste wood fiber resources.
Description
Technical Field
The invention belongs to the technical field of floor processing, relates to a composite material floor, and particularly relates to a floor preparation process taking a composite material as a core plate and a floor.
Background
The waste paper is used as renewable resources, and the recovery and the utilization have important meanings for saving natural resources, slowing down carbon dioxide emission, slowing down water resource pollution, developing sustainable economy and the like. At present, the most used waste paper recycling is to produce recycled paper after deinking, but the deinking process can cause pollution to water resources, and meanwhile, the repeated recycling of waste paper and the pulping and papermaking processes can cause damage to fibers and reduce the mechanical properties of the fibers. If the waste paper resource can be efficiently utilized, the method has great economic and social benefits.
Wood products processing enterprises can produce a large amount of leftover bits and pieces, wood flour and other remainders in the process of producing wood products, and the wood fiber structure has good rigidity and toughness. However, most of the residual materials are recycled and processed into biomass fuel which is burnt once, the heat energy value is low, and the economic value is not high.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to disclose a floor preparation process taking a composite material as a core plate.
Technical scheme
A floor preparation process taking a composite material as a core plate comprises the following steps:
A. feeding polylactic acid particles, waste paper pulp particles, wood fibers and an auxiliary agent into a crusher according to a mass ratio of 30-50: 5-20: 0.5-8, and mixing at 2000-5000 r/min for 3-6 min;
B. after fully mixing, putting into a co-rotating double-screw extruder, and extruding the mixture, wherein the rotating speed of the double screws is 90-110 r/min, and the extrusion temperature is 170-190 ℃;
C. placing a bottom plate below the inside of the shaping mold, injecting the mixture into the shaping mold, arranging a decorative panel above the mixture, cooling to room temperature, and forming a plate blank to be shaped;
D. placing the plate blank into a hot press, wherein the temperature of an upper plate and a lower plate of the hot press is 190-220 ℃, the hot pressing time is 160-250 s, the surface pressure is 8-12 MPa, and cooling to room temperature after hot press forming;
E. transferring the plate blank into a cold press, cooling the upper plate and the lower plate of the cold press through water cooling circulation, setting the pressure to be 2-4 MPa, setting the plate blank cooling rate to be 10-20 ℃/min, setting the time to be 150-300 s, and moving the plate blank out of the cold press after the plate blank is cooled to the room temperature;
F. sequentially stacking cold-pressed plate blanks into a stack, covering a heavy object on the uppermost layer, curing for 1-5 d, sanding the two sides of the plate blanks after curing, and processing matched grooves and tenons to obtain the floor;
G. and coating a transparent or semitransparent coating on the surface and the back of the floor, and cooling to obtain the floor.
In the preferred embodiment of the invention, the waste paper pulp particles obtained in the step A can be subjected to humidification treatment, and the water content reaches 15-25%.
In the preferred embodiment of the invention, the wood fiber in the step A has a length of 0.1-10 mm and an average diameter of 0.01-0.4 mm, preferably a length of 0.3-4 mm and an average diameter of 0.01-0.06 mm.
Further, the wood fibers obtained in the step A are screened by a 16-18-mesh screen and then subjected to humidification treatment, and the water content reaches 15-25%.
In the preferred embodiment of the present invention, the surface of the wood fiber in step a is pretreated by using a chemical or physical method to treat the surface of the wood fiber, so as to change the structure and performance of the surface of the wood fiber, thereby achieving the purpose of improving the surface compatibility. The wood fiber surface contains a large amount of polar hydroxyl, phenolic hydroxyl and the like, and shows extremely strong chemical activity, so that the hydrophobic non-polar functional group is generated on the wood fiber mainly by performing modification treatment such as esterification, etherification, graft copolymerization and the like on the polar functional group. Treatment methods include, but are not limited to, acid treatment (DA), base treatment (DB), hydrothermal treatment (HW), organic solvent treatment (OR), sodium chlorite solution bleaching treatment (SCB), continuous Screw Extrusion Steam Explosion (SESE), and the like. As the woody material of the wood fiber to be surface-treated, there is no limitation of species. For example: small diameter wood, wood block and wood chip are boiled and softened, and then enter equipment for fiber separation.
In the preferred embodiment of the invention, the assistant in the step A is calcium carbonate or montmorillonite.
The invention also discloses a floor manufactured by the method, which is provided with a decorative panel, a core plate and a bottom plate from top to bottom, wherein the surfaces of the decorative panel and the bottom plate are coated with transparent or semitransparent coatings.
The core plate is made of the composite material prepared by the process, and the density of the core plate is 0.5-1.3 g/cm3The thickness is 3 to 18mm, preferably 5 to 8 mm.
The decoration panel is a veneer or a jointed board or a recombined veneer which is processed by natural wood, and the thickness of the decoration panel is 0.2-4 mm.
The bottom plate is a single plate or jointed plate or recombined single plate processed by natural wood, and the thickness of the bottom plate is 0.2-4 mm.
The coating is a cross-linked polymer of a mixture taking ultraviolet/electron beam cured acrylate functional resin as a main component, and has the thickness of 30-400 microns, and preferably the thickness of 50-100 microns.
Further, the coating can also be formed by naturally solidifying wood wax oil.
Advantageous effects
The invention fully utilizes waste resources such as waste paper, wood product excess material and the like, mixes and granulates the waste resources and the wood product excess material with polylactic acid, thermally forms the waste resources into composite materials, and uses the composite materials as core plates of floors. The process disclosed by the invention has the advantages of simple steps, wide raw material sources of the composite material, no much investment in pretreatment steps, and capability of meeting the national standard requirements of the prepared composite floor. The invention improves the economic value of the waste paper and wood product excess material, and provides a feasible industrialization path for the reasonable utilization of waste wood fiber resources.
Drawings
FIG. 1 is a schematic structural view of a composite flooring manufactured according to the present invention; the name of each part is 1, coating 2, bottom plate 3, core plate 4 and decorative panel.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
Example 1
A floor preparation process taking a composite material as a core plate comprises the following steps:
step one, preparing mixture particles. Feeding polylactic acid particles, waste paper pulp particles, wood fibers and an auxiliary agent into a crusher to be mixed according to the mass percentage range of 48 percent (40 percent) to 10 percent (2 percent). Decompose at 3000 rpm for 5 minutes. After fully mixing, putting the mixture into a co-rotating double-screw extruder to extrude the mixture, wherein the rotating speed of the double screws is 100r/min, and the extruding temperature of the double screws is 180 ℃.
Further optimizing the scheme, humidifying the waste paper pulp particles to ensure that the water content of the waste paper pulp particles is 20-23% by mass.
The scheme is further optimized, the wood fiber is screened through screening equipment with the mesh number of 18, the screened wood fiber is subjected to humidification treatment, and the water content of the wood fiber is controlled to be 20-23%.
And step two, assembling. A eucalyptus bottom plate 2 with the length and width of 950 multiplied by 190 multiplied by 1.6mm is arranged below a shaping mould with the inner diameter, the length, the width and the height of 1000 multiplied by 200 multiplied by 20mm, then the mixture is injected into the shaping mould, and a black walnut decoration panel 4 with the length, the width and the thickness of 950 multiplied by 190 multiplied by 1.5mm is arranged above the mixture. Cooling, forming plate blank to be shaped, and placing into a press.
And step three, hot-press forming, namely placing the plate blank into a hot press. The temperature of the upper plate and the lower plate of the hot press is set to be 200 ℃, the hot pressing time is set to be 220 seconds, and the gauge pressure is set to be 10 MPa.
Step four, cold pressing. Transferring the cold and post-pressed plate blank into a cold press, setting the pressure to be 2MPa, cooling the upper plate and the lower plate of the cold press through water cooling circulation, setting the plate blank cooling rate to be 20 ℃/min, and setting the time to be 180 seconds. And (5) cooling to room temperature and then moving out of the cold press.
And step five, stacking the cold-pressed plate blanks in sequence to form a stack. And (5) carrying out health preserving treatment on the uppermost layer of cover by using a heavy object for 3 days. And (3) sanding the two sides of the cured plate blank to eliminate unevenness of the plate surface, and processing a matched groove and a matched tenon according to the specification requirement of the product. The surface and the back of the floor are coated with transparent or semi-transparent coatings.
The composite wood floor manufactured according to the process is sequentially laminated with the decoration panel 4, the core plate 3 and the bottom plate 2 from top to bottom, the decoration panel 4 and the bottom plate 2 are coated with the transparent or semitransparent coating 1, the core plate 3 is made of a composite material with certain elasticity, the thickness of the plate is 8mm, and the decoration panel 4 is a wood veneer processed by natural wood black walnuts and is 1.5mm thick. The bottom plate 2 is a eucalyptus veneer with the thickness of 1.8mm, the decorative panel 4 is 100 mu m thick, and the bottom plate 2 is 30 mu m thick.
The core plate 3 is a composite material prepared according to the process, is prepared by mixing polylactic acid particles, waste paper pulp particles and wood fibers according to a certain proportion, feeding, pulping and extruding, is processed into particles and then is subjected to thermal forming, and the density of the core plate is 1.1g/cm3。
The polylactic acid particles are polymers obtained by polymerizing lactic acid serving as a main raw material, and the adding mass percentage is 48%.
The waste paper pulp particles are prepared by taking waste paper as a raw material and mechanically stirring, and the adding mass percentage is 40%.
The wood fiber is subjected to hydrothermal treatment on the surface, and the addition mass percentage is 10%.
The length of the fiber is 0.4-0.6mm, the average diameter is 0.015-0.06mm,
further, in order to improve the crystallization effect of the polylactic acid, 2 mass percent of montmorillonite is added.
Example 2
A floor preparation process taking a composite material as a core plate comprises the following steps:
step one, preparing mixture particles. Feeding polylactic acid particles, waste paper pulp particles, wood fibers and an auxiliary agent into a crusher to be mixed according to the mass percentage ranges of (40%) (45%) (13.5%) (1.5%). Decompose at 3000 rpm for 5 minutes. After fully mixing, putting the mixture into a co-rotating double-screw extruder to extrude the mixture, wherein the rotating speed of the double screws is 100r/min, and the extruding temperature of the double screws is 170 ℃.
Further optimizing the scheme, humidifying the waste paper pulp particles to ensure that the water content of the waste paper pulp particles is 20-23% by mass.
The scheme is further optimized, the wood fiber is screened through screening equipment with the mesh number of 18, the screened wood fiber is subjected to humidification treatment, and the water content of the wood fiber is controlled to be 20-23%.
And step two, assembling. The eucalyptus bottom plate 2 with the length and width of 950 multiplied by 190 multiplied by 1.1mm is arranged below the inside diameter and length and width of 1000 multiplied by 200 multiplied by 22mm in the shaping mould, then the mixture is injected into the shaping mould, and the oak decorative panel 4 with the length and width of 950 multiplied by 190 multiplied by 1.0mm is arranged above the mixture. Cooling, forming plate blank to be shaped, and placing into a press.
And step three, hot-press forming, namely placing the plate blank into a hot press. The temperature of the upper plate and the lower plate of the hot press is set to 195 ℃, the hot pressing time is 210 seconds, and the gauge pressure is set to be 10 MPa.
Step four, cold pressing. Transferring the cold and post-pressed plate blank into a cold press, setting the pressure to be 3MPa, cooling the upper plate and the lower plate of the cold press through water cooling circulation, setting the plate blank cooling rate to be 15 ℃/min, and setting the time to be 200 seconds. And (5) cooling to room temperature and then moving out of the cold press.
And step five, stacking the cold-pressed plate blanks in sequence to form a stack. And (5) carrying out health preserving treatment on the uppermost layer of cover by using a heavy object for 3 days. And (3) sanding the two sides of the cured plate blank to eliminate unevenness of the plate surface, and processing a matched groove and a matched tenon according to the specification requirement of the product. And coating a transparent or semitransparent coating on the surface and the back of the floor.
The composite wood floor manufactured by the process is sequentially laminated with the decorative panel 4, the core plate 3 and the bottom plate 2 from top to bottom. The decorative panel 4 and the base plate 2 are painted with a transparent or translucent coating 1. The core plate 3 is made of a composite material with certain elasticity, the thickness of the plate is 13mm, and the decorative panel 4 is a wood veneer processed by natural wood oak and has the thickness of 1 mm. The bottom plate 2 is a eucalyptus veneer with the thickness of 1.1mm, the decorative panel 4 is 100 mu m thick, and the bottom plate 2 is 30 mu m thick.
The core plate 3 is prepared by mixing polylactic acid particles, waste paper pulp particles and wood fibers according to a certain proportion, feeding, pulping, extruding, processing into particles, and performing thermal forming to obtain the core plate with the density of 0.9g/cm3。
The polylactic acid particles are polymers obtained by polymerizing lactic acid serving as a main raw material. The mass percentage of the additive is 40 percent.
The waste paper pulp particles are prepared by mechanically stirring the waste paper used as a raw material, and the adding mass percentage is 45%.
The wood fiber is wood fiber with the surface subjected to hydrothermal treatment and the like, and the added mass percentage is 13.5%.
The length of the fiber is 0.4-0.5mm, the average diameter is 0.015-0.04mm,
in order to improve the crystallization effect of polylactic acid, 1.5 percent of montmorillonite by mass is added.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A floor preparation process taking a composite material as a core plate is characterized by comprising the following steps:
A. feeding polylactic acid particles, waste paper pulp particles, wood fibers and an auxiliary agent into a crusher according to a mass ratio of 30-50: 5-20: 0.5-8, and mixing at 2000-5000 r/min for 3-6 min;
B. after fully mixing, putting into a co-rotating double-screw extruder, and extruding the mixture, wherein the rotating speed of the double screws is 90-110 r/min, and the extrusion temperature is 170-190 ℃;
C. placing a bottom plate below the inside of the shaping mold, injecting the mixture into the shaping mold, arranging a decorative panel above the mixture, cooling to room temperature, and forming a plate blank to be shaped;
D. placing the plate blank into a hot press, wherein the temperature of an upper plate and a lower plate of the hot press is 190-220 ℃, the hot pressing time is 160-250 s, the surface pressure is 8-12 MPa, and cooling to room temperature after hot press forming;
E. transferring the plate blank into a cold press, cooling the upper plate and the lower plate of the cold press through water cooling circulation, setting the pressure to be 2-4 MPa, setting the plate blank cooling rate to be 10-20 ℃/min, setting the time to be 150-300 s, and moving the plate blank out of the cold press after the plate blank is cooled to the room temperature;
F. sequentially stacking cold-pressed plate blanks into a stack, covering a heavy object on the uppermost layer, curing for 1-5 d, sanding the two sides of the plate blanks after curing, and processing matched grooves and tenons to obtain the floor;
G. and coating a transparent or semitransparent coating on the surface and the back of the floor, and cooling to obtain the floor.
2. The process for preparing a floor with a composite material as a core plate according to claim 1, wherein the process comprises the following steps: and B, humidifying the waste paper pulp particles in the step A, wherein the water content is 15-25%.
3. The process for preparing a floor with a composite material as a core plate according to claim 1, wherein the process comprises the following steps: the wood fiber in the step A has the length of 0.1-10 mm and the average diameter of 0.01-0.4 mm, preferably the length of 0.3-4 mm and the average diameter of 0.01-0.06 mm.
4. The process for preparing a floor with a composite material as a core plate according to claim 1, wherein the process comprises the following steps: and B, screening the wood fibers in the step A by 16-18 meshes, and then humidifying the wood fibers to obtain the wood fibers with the water content of 15-25%.
5. The process for preparing a floor with a composite material as a core plate according to claim 1, wherein the process comprises the following steps: the auxiliary agent in the step A is calcium carbonate or montmorillonite.
6. The floor prepared by the process according to any one of the claims 1 to 5, which is provided with a decorative panel (4), a core plate (3) and a bottom plate (2) from top to bottom in sequence, and is characterized in that: the surfaces of the decorative panel (4) and the bottom plate (2) are coated with transparent or semitransparent coatings (1).
7. The floor of claim 6, wherein: the density of the core plate (3) is 0.5-1.3 g/cm3The thickness is 3 to 18mm, preferably 5 to 8 mm.
8. The floor of claim 6, wherein: the decoration panel (4) is a veneer or a jointed board or a recombined veneer which is processed by natural wood, and the thickness is 0.2-4 mm.
9. The floor of claim 6, wherein: the bottom plate (2) is a veneer or a jointed board or a recombined veneer processed by natural wood, and the thickness is 0.2-4 mm.
10. The floor of claim 6, wherein: the coating (1) is formed by naturally curing a cross-linked polymer of a mixture taking ultraviolet/electron beam cured acrylate functional resin as a main component or wood wax oil, and has the thickness of 30-400 mu m, preferably 50-100 mu m.
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| CN202110960412.XA CN113696297A (en) | 2021-08-20 | 2021-08-20 | Floor board preparation process using composite material as core board and floor board |
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| CN202110960412.XA CN113696297A (en) | 2021-08-20 | 2021-08-20 | Floor board preparation process using composite material as core board and floor board |
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| CN110205855A (en) * | 2019-04-19 | 2019-09-06 | 东莞建晖纸业有限公司 | A kind of coating coated duplex board with grey back center stock preparation process |
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2021
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| CN102959058A (en) * | 2010-07-12 | 2013-03-06 | 西门子Vai金属科技有限责任公司 | Method for producing pressed articles containing coal particles |
| CN101942118A (en) * | 2010-10-25 | 2011-01-12 | 曾广胜 | Plant fiber starch fully-biodegradable material and preparation method thereof |
| CN102877355A (en) * | 2012-11-01 | 2013-01-16 | 红塔烟草(集团)有限责任公司 | Polylactic acid forming paper and preparation method |
| CN110205855A (en) * | 2019-04-19 | 2019-09-06 | 东莞建晖纸业有限公司 | A kind of coating coated duplex board with grey back center stock preparation process |
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