CN112341105A - Flexible concrete wood-grain-like board suitable for park city and preparation method thereof - Google Patents
Flexible concrete wood-grain-like board suitable for park city and preparation method thereof Download PDFInfo
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- CN112341105A CN112341105A CN202011192683.7A CN202011192683A CN112341105A CN 112341105 A CN112341105 A CN 112341105A CN 202011192683 A CN202011192683 A CN 202011192683A CN 112341105 A CN112341105 A CN 112341105A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a flexible concrete wood-grain-imitated plate suitable for park cities and a preparation method thereof, wherein the flexible concrete wood-grain-imitated plate comprises the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water; the preparation method comprises the following steps: weighing raw materials, premixing dry materials, adding water, stirring, vacuumizing slurry, rolling for the first time, rolling for the second time, maintaining moisture, cutting and grooving. The wood grain imitating board has light weight, high strength, high toughness, fireproof performance, moistureproof performance, capacity of being nailed and sawn; and the energy is saved and the waste is utilized in the production process, the steam curing is avoided, the zero emission is realized, and the efficiency is high.
Description
Technical Field
The invention belongs to the technical field of manufacturing of wood-grain-imitated boards, and particularly relates to a flexible concrete wood-grain-imitated board suitable for park cities and a preparation method thereof.
Background
Along with the improvement of living standard, people have higher and higher requirements on decoration materials, the wood floor has been completely forbidden or restricted from felling in China and international society because of long growth period of trees, poor and deficient resources, high price, complex processing, low utilization rate and serious damage to natural ecological environment, and tends to shrink the production of wood floor greatly, causing the serious shortage trend of the wood floor, so various wood-substituted wood-imitated products appear, and the popular wood grain boards on the market at present are mainly divided into the following materials: solid wood boards, metal wood grain boards, common cement-based wood grain imitating boards, calcium silicate material wood grain imitating boards and PVC wood grain imitating boards. Wherein, they have their own disadvantages, the solid wood board has the disadvantages of large water absorption, easy aging, mildew, flammability, easy contamination and corrosion, and simultaneously consumes forest wood resources; the metal wood grain board has the defects of easy corrosion, hard texture and lack of mild touch of wood; the common cement-based wood-grain-like board has the defects of large self weight, easy buckling deformation and poor processability and assembly; the calcium silicate material wood-grain-like board has the defects of large dead weight, large water absorption, low bending strength and high production energy consumption; the PVC wood-grain-like board has the defects of easy aging and easy flammability.
Meanwhile, with the advance of the general scheme of demonstrating area of park cities for practicing new development concept of capital construction, capital construction is required to be a national model park city in the future, and more environment-friendly and energy-saving materials are also required to produce a novel concrete wood-grain-imitated board, so that a novel wood-grain-imitated board which is convenient to use and high in toughness strength is needed to be provided.
Disclosure of Invention
In view of the above, the present invention provides a flexible concrete wood-like board suitable for park cities and a preparation method thereof.
In order to solve the technical problem, the invention discloses a flexible concrete wood-like grain board suitable for park cities, which comprises the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water.
Optionally, the mineral admixture is a high-performance polycarboxylic acid water reducing agent.
Optionally, the coupling agent is KH 560.
The invention also discloses a preparation method of the flexible concrete wood-grain-imitated plate suitable for the park city, which comprises the following steps:
step 1, weighing: weighing the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water;
step 2, dry material premixing: pre-dry-mixing weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral additives, wood chips and basalt sand;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nanofibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuously stirring after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber for vacuumizing until the pressure in the chamber reaches a certain pressure, and stabilizing the pressure and keeping the pressure for a period of time;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: the slab band mold enters a normal-temperature moisture-preserving curing chamber with the RH being 90-95 percent, and is demoulded after 24 hours;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
Optionally, the dry mixing time in the step 2 is 1min to 2 min.
Optionally, the wet mixing time in the step 3 is 4min to 5min, and the continuous stirring time is 1min to 2 min.
Optionally, the pressure in the chamber in the step 4 reaches 100-150 Pa, and the pressure is kept constant for 1-2 min.
Compared with the prior art, the invention can obtain the following technical effects:
the flexible concrete wood-grain-like board suitable for the park city has the advantages of light weight, high strength, ultrahigh toughness, fire resistance, moisture resistance, nailability and sawability; and the energy is saved and the waste is utilized in the production process, the steam curing is avoided, the zero emission is realized, and the efficiency is high.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings, so that how to implement the technical features of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
The invention provides a flexible concrete wood-grain-like board suitable for park cities, which comprises the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water.
Wherein the mineral admixture is a high-performance polycarboxylic acid water reducing agent; the coupling agent is KH 560.
The invention also discloses a preparation method of the flexible concrete wood-grain-imitated plate suitable for the park city, which comprises the following steps:
step 1, weighing: weighing the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water;
step 2, dry material premixing: the weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral admixture, wood chips and basalt sand are dry-mixed in advance for 1-2 min;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing for 4-5 min until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nano-fibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuing to stir for 1-2 min after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber for vacuumizing until the pressure in the chamber reaches 100-150 Pa, and keeping the pressure for 1-2 min at a constant pressure;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: the slab band mold enters a normal-temperature moisture-preserving curing chamber with the RH being 90-95 percent, and is demoulded after 24 hours;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
Example 1
A flexible concrete wood-grain-like board suitable for park cities is composed of the following components in parts by mass: 30 parts of ordinary portland cement, 6 parts of sulphoaluminate low-alkali cement, 8 parts of wood chips, 25 parts of 30-mesh basalt sand, 25 parts of mineral admixture, 0.8 part of coupling agent, 3 parts of alkali-resistant basalt fiber, 0.005 part of carbon nanofiber, 0.015 part of nano-silica, 2 parts of PE fiber, 4 parts of bamboo fiber, 2 parts of wood fiber and 20 parts of water.
The preparation method comprises the following steps:
step 1, weighing the components in parts by mass;
step 2, dry material premixing: pre-dry-mixing weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral additives, wood chips and basalt sand for 1.5 min;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing for 4.5min until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nano-fibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuously stirring for 1.5min after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber, vacuumizing until the pressure in the chamber reaches 125Pa, and keeping the pressure for 1.5 min;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: the slab band mold enters a normal-temperature moisture-preserving curing chamber with the RH being 90-95 percent, and is demoulded after 24 hours;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
Example 2
A flexible concrete wood-grain-like board suitable for park cities is composed of the following components in parts by mass: 25 parts of ordinary portland cement, 8 parts of sulphoaluminate low-alkali cement, 5 parts of wood chips, 20 parts of 40-mesh basalt sand, 30 parts of mineral admixture, 0.5 part of coupling agent, 5 parts of alkali-resistant basalt fiber, 0.001 part of carbon nanofiber, 0.02 part of nano-silica, 1 part of PE fiber, 5 parts of bamboo fiber, 1 part of wood fiber and 25 parts of water.
The preparation method comprises the following steps:
step 1, weighing the components in parts by mass;
step 2, dry material premixing: pre-dry-mixing weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral additives, wood chips and basalt sand for 1 min;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing for 5min until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nanofibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuously stirring for 1min after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber, vacuumizing until the pressure in the chamber reaches 150Pa, and stabilizing the pressure for 1 min;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: the slab band mold enters a normal-temperature moisture-preserving curing chamber with the RH being 90-95 percent, and is demoulded after 24 hours;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
Example 3
A flexible concrete wood-grain-like board suitable for park cities is composed of the following components in parts by mass: 35 parts of ordinary portland cement, 5 parts of sulphoaluminate low-alkali cement, 10 parts of wood chips, 30 parts of 20-mesh basalt sand, 20 parts of mineral admixture, 1 part of coupling agent, 1 part of alkali-resistant basalt fiber, 0.01 part of carbon nanofiber, 0.01 part of nano-silica, 3 parts of PE fiber, 2 parts of bamboo fiber, 3 parts of wood fiber and 15 parts of water.
The preparation method comprises the following steps:
step 1, weighing the components in parts by mass;
step 2, dry material premixing: pre-dry-mixing weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral additives, wood chips and basalt sand for 2 min;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing for 4min until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nanofibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuously stirring for 2min after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber, vacuumizing until the pressure in the chamber reaches 100Pa, and stabilizing the pressure for 2 min;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: the slab band mold enters a normal-temperature moisture-preserving curing chamber with the RH being 90-95 percent, and is demoulded after 24 hours;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
The flexible concrete wood-grain-like board suitable for the park city prepared in the embodiments 1 to 3 of the invention has the following characteristics:
in conclusion, the flexible concrete wood-grain-like board suitable for the park city, which is prepared by the invention, has the characteristics that:
1) light weight, bulk density: 1600-3The areal density: 28.4-40kg/m2。
2) High strength, axial compressive strength: 125.3-160MPa, breaking strength: 22.4-30MPa, axial tensile strength: 11.5-20 MPa;
3) high impermeability, DCl：1.35-1.5(×10-14m2/s)；
4) Ultra-high toughness (initial crack mid-span deflection/span) is 2.3-3%, maximum force mid-span deflection: 4.8 to 6 percent.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The flexible concrete wood-grain-like board suitable for the park city is characterized by comprising the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water.
2. The flexible concrete wood-like grain board suitable for park cities as claimed in claim 1, wherein the mineral admixture is a high-performance polycarboxylic acid water reducing agent.
3. The flexible concrete simulated wood grain board suitable for use in park cities as claimed in claim 1, wherein the coupling agent is KH 560.
4. A preparation method of a flexible concrete wood-grain-imitated plate suitable for park cities is characterized by comprising the following steps:
step 1, weighing: weighing the following components in parts by mass: 25-35 parts of ordinary portland cement, 5-8 parts of sulphoaluminate low-alkali cement, 5-10 parts of wood chips, 20-30 parts of 20-40 mesh basalt sand, 20-30 parts of mineral admixture, 0.5-1 part of coupling agent, 1-5 parts of alkali-resistant basalt fiber, 0.001-0.01 part of carbon nanofiber, 0.01-0.02 part of nano-silica, 1-3 parts of PE fiber, 2-5 parts of bamboo fiber, 1-3 parts of wood fiber and 15-25 parts of water;
step 2, dry material premixing: pre-dry-mixing weighed ordinary portland cement, sulphoaluminate low-alkali cement, mineral additives, wood chips and basalt sand;
step 3, adding water and stirring: then adding weighed water, a coupling agent and nano-silica for wet mixing until the mixture is close to the target fluidity, then slowly adding weighed alkali-resistant basalt fibers, carbon nanofibers, nano-silica, PE fibers, bamboo fibers and wood fibers, and continuously stirring after the fibers are completely added until the fibers are uniformly dispersed in the mixture;
step 4, slurry vacuumizing: adding the mixture into a vacuum chamber for vacuumizing until the pressure in the chamber reaches a certain pressure, and stabilizing the pressure and keeping the pressure for a period of time;
step 5, primary rolling: uniformly paving the mixture after vacuumizing on a flow line template, and performing rolling treatment;
step 6, secondary rolling: carrying out texture rolling on the plate blank subjected to constant-thickness rolling;
step 7, moisturizing and maintaining: enabling the slab blank belt mold to enter a normal-temperature moisture-preserving curing room with RH =90% -95%, and demolding after 24 h;
and 8, cutting: cutting the demoulded plate according to the design size by using a toothless saw;
step 9, grooving: and (4) cutting the plate edge by using a grooving machine to install the clamping groove.
5. The preparation method according to claim 4, wherein the dry mixing time in the step 2 is 1min to 2 min.
6. The preparation method according to claim 4, wherein the wet mixing time in the step 3 is 4 to 5min, and the continuous stirring time is 1 to 2 min.
7. The method according to claim 4, wherein the pressure in the chamber in step 4 is 100Pa to 150Pa, and the pressure is maintained for 1min to 2 min.
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| CN112341105B (en) | 2022-03-04 |
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