CN115433543A - Soybean meal adhesive and preparation method of ecological plate - Google Patents
Soybean meal adhesive and preparation method of ecological plate Download PDFInfo
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- CN115433543A CN115433543A CN202211067046.6A CN202211067046A CN115433543A CN 115433543 A CN115433543 A CN 115433543A CN 202211067046 A CN202211067046 A CN 202211067046A CN 115433543 A CN115433543 A CN 115433543A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 82
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 82
- 235000019764 Soybean Meal Nutrition 0.000 title claims abstract description 79
- 239000004455 soybean meal Substances 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000007731 hot pressing Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 241000209140 Triticum Species 0.000 claims abstract description 26
- 235000021307 Triticum Nutrition 0.000 claims abstract description 26
- 235000013312 flour Nutrition 0.000 claims abstract description 26
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 18
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 85
- 239000011265 semifinished product Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 19
- 239000002585 base Substances 0.000 claims description 16
- 238000004321 preservation Methods 0.000 claims description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 150000007529 inorganic bases Chemical class 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 42
- 239000011248 coating agent Substances 0.000 abstract description 18
- 238000000576 coating method Methods 0.000 abstract description 18
- 244000046052 Phaseolus vulgaris Species 0.000 abstract description 14
- 235000010627 Phaseolus vulgaris Nutrition 0.000 abstract description 14
- 238000007790 scraping Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000006260 foam Substances 0.000 abstract description 5
- 238000005187 foaming Methods 0.000 abstract description 5
- 239000002023 wood Substances 0.000 abstract description 5
- 238000004945 emulsification Methods 0.000 abstract description 2
- 239000011256 inorganic filler Substances 0.000 abstract description 2
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract description 2
- 239000012766 organic filler Substances 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 51
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 42
- 238000003756 stirring Methods 0.000 description 37
- 241000219927 Eucalyptus Species 0.000 description 29
- 239000007864 aqueous solution Substances 0.000 description 20
- 238000002156 mixing Methods 0.000 description 19
- 239000000843 powder Substances 0.000 description 14
- 230000007547 defect Effects 0.000 description 13
- 239000004831 Hot glue Substances 0.000 description 12
- 238000005520 cutting process Methods 0.000 description 12
- 238000009826 distribution Methods 0.000 description 12
- 239000003513 alkali Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000008235 industrial water Substances 0.000 description 9
- 239000004744 fabric Substances 0.000 description 8
- 229920001807 Urea-formaldehyde Polymers 0.000 description 7
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 6
- 238000003892 spreading Methods 0.000 description 6
- 230000007480 spreading Effects 0.000 description 6
- 229920000877 Melamine resin Polymers 0.000 description 5
- 238000005253 cladding Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 5
- 238000012840 feeding operation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 240000002834 Paulownia tomentosa Species 0.000 description 1
- 235000010678 Paulownia tomentosa Nutrition 0.000 description 1
- 241000604739 Phoebe Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 229920002531 Rubberwood Polymers 0.000 description 1
- 241000907663 Siproeta stelenes Species 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000003905 indoor air pollution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000019710 soybean protein Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
- B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The invention belongs to the technical field of adhesives, and particularly relates to a bean pulp adhesive and a preparation method of an ecological plate. The invention provides a bean pulp adhesive which comprises the following components: 1 to 3 portions of inorganic strong base, 20 to 30 portions of soybean meal, 0.1 to 0.5 portion of anionic surfactant, 0.5 to 3 portions of talcum powder, 1 to 5 portions of wheat flour and 92 to 100 portions of water. According to the invention, the talcum powder is used as the inorganic filler, so that the fluidity and viscosity of the glue can be effectively improved, and the coating performance of the bean pulp adhesive on the surface of the wood is enhanced; the wheat flour is used as the organic filler, so that the proportion of bubbles in glue can be reduced, and the problems that the joint gaps cannot be normally subjected to putty scraping production and the proportion of foam boards is high due to glue foaming during hot pressing are solved; inorganic strong base is used as a modifier of the soybean meal adhesive, and an anionic surfactant is used as an emulsification aid, so that the viscosity performance and adhesive strength of the glue are improved. The results of the examples show that the artificial board obtained by gluing the bean pulp adhesive provided by the invention has high gluing strength and low foam board rate.
Description
Technical Field
The invention belongs to the technical field of adhesives, and particularly relates to a soybean meal adhesive and a preparation method of an ecological plate.
Background
With the continuous reduction of forest resources and the development of economy, the global production of artificial boards is rapidly developed in recent years, and the demand of wood adhesives serving the artificial board industry is increased. At present, the adhesive commonly used in the production of artificial boards is formaldehyde synthetic resin, which is mainly urea formaldehyde resin and modified products thereof. However, in the synthesis process of the urea-formaldehyde resin, a large amount of formaldehyde is used as a reaction raw material, free formaldehyde has great adverse effects on human bodies and the environment, and although the production level of the urea-formaldehyde resin adhesive is greatly improved after years of efforts, the release of formaldehyde of products of the urea-formaldehyde resin adhesive cannot be completely eliminated, so that the artificial boards and the products (furniture, wood floors, indoor wooden decorative materials and the like) sold in the market still have a serious formaldehyde release problem and are a main source of formaldehyde pollution in indoor air pollution.
In order to overcome the problem of formaldehyde release of urea-formaldehyde resin adhesives, the research on soybean protein-based adhesives using soybean meal as the main raw material has been receiving more and more attention. The soybean meal is a large amount of agricultural product processing residues, is nontoxic and renewable, and the artificial board prepared by using the adhesive as the main raw material has high safety, can be used for building decoration and furniture, can also be used for food packaging, and has great advantages.
However, compared with urea-formaldehyde resin, the currently marketed soybean meal adhesive still has poor glue coating performance and is easy to foam in the hot pressing process of artificial board production, so that the artificial board has low bonding strength, poor stability and high board foaming rate, and the large-scale popularization and application of the artificial board in artificial board manufacturing are hindered.
Disclosure of Invention
The invention aims to provide a bean pulp adhesive and a preparation method of an ecological plate.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a soybean meal adhesive which comprises the following components in parts by mass:
1 to 3 portions of inorganic strong base, 20 to 30 portions of soybean meal, 0.1 to 0.5 portion of anionic surfactant, 0.5 to 3 portions of talcum powder, 1 to 5 portions of wheat flour and 92 to 100 portions of water.
Preferably, the strong inorganic base is an alkali metal hydroxide.
Preferably, the anionic surfactant comprises sodium dodecyl sulfate and/or sodium dodecyl benzene sulfonate.
Preferably, the fineness of the wheat flour is more than the fineness of the soybean meal.
Preferably, the fineness of the wheat flour is 86 +/-20 meshes.
Preferably, the fineness of the soybean meal is 200 +/-50 meshes.
Preferably, the fineness of the talcum powder is 300 +/-50 meshes.
Preferably, the composition comprises the following components in parts by mass:
2 parts of inorganic strong base, 25 parts of soybean meal, 0.4 part of anionic surfactant, 1 part of talcum powder, 3 parts of wheat flour and 98 parts of water.
The invention provides a preparation method of an ecological plate, which comprises the following steps:
(1) Carrying out first pressing after splicing the middle plate on the front surface and the back surface of the core plate in a gluing way to obtain a semi-finished product, wherein the first pressing comprises the following steps: sequentially carrying out first cold pressing and first hot pressing;
(2) Laminating the veneer layer with the single face of the recombined decorative veneer to obtain a laminated board;
(3) And carrying out second pressing after the surface of the recombined decorative veneer in the pressure pasting board is glued on the front and back surfaces of the semi-finished product to obtain the ecological board, wherein the second pressing comprises the following steps: carrying out second cold pressing and second hot pressing in sequence;
the adhesive used in the gluing in the step (1) and the step (3) is the soybean meal adhesive in the technical scheme;
the step (1) and the step (2) have no time sequence limitation.
Preferably, the heat preservation and pressure maintaining time of the first hot pressing is 700 +/-90 s; and the heat preservation and pressure maintaining time of the second hot pressing is 600 +/-90 s.
The invention provides a soybean meal adhesive which comprises the following components in parts by mass: 1 to 3 portions of inorganic strong base, 20 to 30 portions of soybean meal, 0.1 to 0.5 portion of anionic surfactant, 0.5 to 3 portions of talcum powder, 1 to 5 portions of wheat flour and 92 to 100 portions of water. According to the bean pulp adhesive provided by the invention, the talcum powder is used as the inorganic filler, so that the fluidity and viscosity of the adhesive can be effectively improved, and the coating performance of the bean pulp adhesive on the surface of wood is enhanced; the wheat flour is used as the organic filler, so that the proportion of bubbles in glue can be reduced, and the problems that the joint gaps cannot be normally subjected to greasy scraping production and the proportion of foam boards is high due to glue foaming during hot pressing are solved; inorganic strong base is used as a modifier of the soybean meal adhesive, and an anionic surfactant is used as an emulsification aid, so that the coating performance and the adhesive strength of the glue are improved. The results of the examples show that the artificial board obtained by gluing with the bean pulp adhesive provided by the invention has high gluing strength and low foam board rate, and is suitable for industrial production.
The invention provides a preparation method of an ecological plate, which comprises the following steps: (1) Carrying out first pressing after the middle plate is glued and spliced on the front surface and the back surface of the core plate to obtain a semi-finished product, wherein the first pressing comprises the following steps: sequentially carrying out first cold pressing and first hot pressing; (2) Laminating the veneer layer covered with the single face of the recombined decorative veneer to obtain a laminated board; (3) And carrying out second pressing after gluing the front surface and the back surface of the semi-finished product on the surface of the pressing plate which is not pressed with the veneer layer to obtain the ecological plate, wherein the second pressing comprises the following steps: carrying out second cold pressing and second hot pressing in sequence; the adhesive used in the gluing in the step (1) and the step (3) is the soybean meal adhesive in the technical scheme; the step (1) and the step (2) have no time sequence limitation. The ecological plate provided by the invention has the advantages of high bonding strength, low plate foaming rate, high cost rate and strong market competitiveness.
Further, the heat preservation and pressure maintaining time of the first hot pressing is 700 +/-90 s; and the heat preservation and pressure maintaining time of the second hot pressing is 600 +/-90 s. According to the preparation method provided by the invention, the bean pulp adhesive is used as an adhesive in artificial board bonding, so that the heat preservation and pressure maintaining time of the first hot pressing and the heat preservation and pressure maintaining time of the second hot pressing can be further improved, the bonding performance of the bean pulp adhesive is further improved, the bonding strength of the ecological board is improved, and the board foaming rate is reduced.
Detailed Description
The invention provides a soybean meal adhesive which comprises the following components in parts by mass:
1 to 3 portions of inorganic strong base, 20 to 30 portions of soybean meal, 0.1 to 0.5 portion of anionic surfactant, 0.5 to 3 portions of talcum powder, 1 to 5 portions of wheat flour and 92 to 100 portions of water.
In the present invention, all the preparation starting materials/components are commercially available products well known to those skilled in the art, unless otherwise specified.
The soybean meal adhesive provided by the invention comprises 1-3 parts of inorganic strong base, preferably 1.5-2.5 parts, and more preferably 2 parts by mass.
In the present invention, the strong inorganic base is preferably an alkali metal hydroxide, more preferably NaOH.
Based on the mass portion of the inorganic strong base, the soybean meal adhesive provided by the invention comprises 20-30 parts of soybean meal powder, preferably 22.5-27 parts, and more preferably 25 parts.
In the present invention, the fineness of the soybean meal is preferably 300. + -. 50 mesh.
In the present invention, the soybean meal is preferably high temperature soybean meal.
In the invention, the high-temperature soybean meal is a product obtained by extracting oil from soybeans and then degreasing the soybean meal at high temperature.
In the invention, the temperature of the high-temperature degreasing is 100 +/-5 ℃.
In the invention, the soybean meal powder is preferably high-temperature soybean meal powder, so that the cost of the soybean meal adhesive can be further reduced.
Based on the mass parts of the inorganic strong base, the soybean meal adhesive provided by the invention comprises 0.1-0.5 part of anionic surfactant, preferably 0.2-0.45 part, and more preferably 0.4 part.
In the present invention, the anionic surfactant preferably comprises sodium lauryl sulfate and/or sodium dodecylbenzenesulfonate, more preferably sodium lauryl sulfate.
Based on the mass portion of the inorganic strong base, the soybean meal adhesive provided by the invention comprises 0.5-3 parts of talcum powder, preferably 0.8-2.5 parts, and more preferably 1 part.
In the present invention, the fineness of the talc powder is preferably 300 ± 50 mesh.
Based on the mass parts of the inorganic strong base, the soybean meal adhesive provided by the invention comprises 1-5 parts of wheat flour, preferably 1.5-4 parts, and more preferably 3 parts.
In the present invention, the fineness of the wheat flour is preferably 86 ± 20 mesh.
In the present invention, the fineness of the wheat flour is preferably > the fineness of the soybean meal.
Based on the mass part of the inorganic strong base, the soybean meal adhesive provided by the invention comprises 92-100 parts of water, preferably 92.5-99 parts, and more preferably 98 parts.
In the present invention, the water is preferably industrial water.
In the invention, the soybean meal adhesive provided by the invention preferably comprises the following components in parts by mass: 2 parts of inorganic strong base, 25 parts of soybean meal, 0.4 part of anionic surfactant, 1 part of talcum powder, 3 parts of wheat flour and 98 parts of water.
In the invention, the soybean meal adhesive provided by the invention preferably comprises the following components in parts by mass: 2 parts of NaOH, 25 parts of soybean meal, 0.4 part of sodium dodecyl sulfate, 1 part of talcum powder, 3 parts of wheat flour and 98 parts of water.
In the invention, the soybean meal adhesive is preferably prepared in situ.
The invention provides a preparation method of the soybean meal adhesive, which preferably comprises the following steps:
dissolving inorganic strong alkali in partial water to obtain inorganic strong alkali aqueous solution;
and mixing the residual water, the inorganic strong alkali aqueous solution, the soybean meal powder, the anionic surfactant, the talcum powder and the wheat flour to obtain the soybean meal adhesive.
In the present invention, the mass ratio of the inorganic strong base to the part of water is preferably (1 to 3) to (3 to 5), more preferably 2.
In the present invention, when the mixing is performed, the inorganic strong alkali aqueous solution is preferably added 1 time, and the mixing preferably includes the following steps: mixing the residual water and the inorganic strong alkali aqueous solution through first stirring to obtain a first mixture; and sequentially carrying out second stirring and mixing on the first mixture, the soybean meal powder, the anionic surfactant, the talcum powder and the wheat flour to obtain the soybean meal adhesive. In the invention, the rotating speed of the first stirring and mixing is 150r/min, and the time of the first stirring and mixing is 2min; in the present invention, the second stirring and mixing is preferably carried out at a rotation speed of 120r/min for 5min, and then continuously stirring and mixing at a rotation speed of 50r/min for standby.
In the present invention, when the inorganic strong alkali aqueous solution is preferably added in 2 portions at the time of the mixing, the mixing preferably includes the steps of: mixing the residual water and part of the inorganic strong alkali aqueous solution by first stirring to obtain a first mixture; and sequentially carrying out second stirring and mixing on the first mixture, the soybean meal powder, the anionic surfactant, the residual inorganic strong alkali aqueous solution, the talcum powder and the wheat flour to obtain the soybean meal adhesive. In the invention, the rotating speed of the first stirring and mixing is 150r/min, and the time of the first stirring and mixing is 2min; in the present invention, the second stirring and mixing is preferably carried out at a rotation speed of 120r/min for 5min, and then continuously stirring and mixing at a rotation speed of 50r/min for standby.
In the present invention, when the inorganic strong alkali aqueous solution is preferably fed in 2 times, the mass ratio of the part of the inorganic strong alkali aqueous solution to the remaining inorganic strong alkali aqueous solution is preferably 3.
The invention provides a preparation method of an ecological plate, which comprises the following steps:
(1) Carrying out first pressing after the middle plate is glued and spliced on the front surface and the back surface of the core plate to obtain a semi-finished product, wherein the first pressing comprises the following steps: sequentially carrying out first cold pressing and first hot pressing;
(2) Laminating the veneer layer with the single face of the recombined decorative veneer to obtain a laminated board;
(3) And carrying out second pressing after the surface of the recombined decorative veneer in the pressure pasting board is glued on the front and back surfaces of the semi-finished product to obtain the ecological board, wherein the second pressing comprises the following steps: carrying out second cold pressing and second hot pressing in sequence;
the adhesive used in the gluing in the step (1) and the step (3) is the soybean meal adhesive in the technical scheme;
the step (1) and the step (2) have no time sequence limitation.
The invention carries out first pressing after splicing middle plates by gluing the front surface and the back surface of a core plate (hereinafter referred to as first gluing) to obtain a semi-finished product, wherein the first pressing comprises the following steps: and sequentially carrying out first cold pressing and first hot pressing.
In the invention, the core board is preferably made of fir, poplar, pine, tung, phoebe, rubber wood or malachite wood.
In the present invention, the water content of the core sheet is preferably 12% or less, more preferably 10%.
In the invention, the formaldehyde emission of the core board is less than or equal to 0.025mg/m measured by a climatic chamber method 3 。
In the invention, the core plate is obtained by bonding the core plate single plates by the bean pulp adhesive in the technical scheme.
In a particular embodiment of the invention, the core plate preferably has a length of 2480 ± 10mm and a width of 1245 ± 5mm.
In the present invention, the method for manufacturing the splice middle plate preferably comprises the following steps:
and splicing and bonding the plurality of middle plate veneers to obtain a spliced middle plate.
In an embodiment of the present invention, the material of the middle plate veneer is preferably eucalyptus.
In the invention, the moisture content of the middle plate veneer is preferably less than or equal to 18%, and more preferably 12-16%.
In the specific embodiment of the invention, the length of the splicing middle plate is preferably 2490-2500 mm, and the width is preferably 1255-1265 mm.
In the specific embodiment of the present invention, the length of the middle plate veneer is preferably 1270 ± 5mm, and the width is preferably 635 ± 5mm.
In the invention, before splicing and bonding, the middle plate and the single plate are preferably arranged in rows. The invention has no special requirements on the specific implementation process of the arrangement, and the invention preferably eliminates broken plates, rotten plates and burr plates in the middle plate single plate through the arrangement.
In the present invention, the splicing and bonding are preferably performed in a splicing machine, and in the present invention, the splicing and bonding is preferably performed in the following specific steps: melting the hot melt adhesive by using the splicing machine, and coating the hot melt adhesive on the splicing line; splicing and bonding the middle plate single plates after attaching the splicing lines coated with the hot melt adhesive to the side surfaces of the middle plate single plates; and obtaining the spliced middle plate after the hot melt adhesive is cooled and solidified.
In the present invention, before the gluing, the core board is preferably subjected to a pretreatment, and the pretreatment preferably includes: and sequentially finishing, sanding and grooving. The invention has no special requirements on the specific implementation processes of finishing, sanding and slotting, and the invention preferably removes broken plates, corroded plates and burr plates in the core plates through the finishing.
In the present invention, the first gluing preferably comprises: coating the soybean meal adhesive in the technical scheme on the front surface and the back surface of a core plate (hereinafter referred to as first coating) to obtain a cloth rubber core plate, wherein the cloth rubber amount of the cloth rubber core plate is preferably 1.1 +/-0.1 g/sheet, and the front surface and the back surface of the cloth rubber core plate are covered with a splicing middle plate (hereinafter referred to as first covering).
In the present invention, the first coating requires a uniform amount of coating glue on the entire board surface. In the invention, when the first surface covering is carried out, one end of the middle splicing plate is required to be aligned, the row seam is not more than 2mm, and the middle splicing plate with the same thickness is required to be used for filling and splicing when the thickness exceeds the requirement; the core plates must be placed up and down neatly, and the middle plate can be covered after the core plates have defects and unevenness by using glue filling materials.
In the present invention, the first coating is preferably performed in a coater. The present invention has no particular requirement for the specific implementation of the first coating.
In the invention, the water content of the cloth rubber core plate is preferably less than or equal to 12 percent, and more preferably less than or equal to 10 percent.
In the invention, the formaldehyde emission of the cloth rubber core plate is preferably less than or equal to 0.025mg/m measured by a climatic chamber method 3 。
In the present invention, the first pressing preferably includes: and sequentially carrying out first cold pressing and first hot pressing.
In the present invention, the first cold pressing is preferably carried out in a cold press.
In the present invention, the gauge pressure of the first cold pressing is preferably 13 ± 2MPa
In the present invention, the dwell time of the first cold pressing is preferably not less than 90min, more preferably 90 to 95min.
In the invention, the first cold pressing plate is obtained after the first cold pressing, and the first hot pressing is preferably carried out after the core repairing treatment is carried out on the first cold pressing plate. In the present invention, the core repair process preferably includes: repairing the defects of the spliced middle plate; the splice midplane defect comprises: the length and the width of the splicing middle plates are less than those of the core plates, the splicing middle plates are overlapped, and the row seam of the splicing middle plates is more than or equal to 5mm. In the invention, when the length and the width of the spliced middle plate are less than those of the core plate, the spliced middle plate and the core plate are required to be equal in length and width after being repaired. When the splicing middle plates are overlapped, the overlapped part of the splicing middle plates is cut off in the repairing process. In the invention, the row seam of the middle splicing plate is more than or equal to 5mm, the middle lath is preferably supplemented when the row seam is coated with glue, and the thickness of the supplemented middle lath is preferably consistent with that of the middle splicing plate; the repaired repairing strip is fixed by a plastic gun nail, and the repairing strip is prevented from falling off in the plate feeding operation process during first hot pressing.
In the present invention, the length of the first cold pressing plate after the core repair treatment is preferably 2490 ± 10mm; the width is 1245 mm plus or minus 5mm; the row gap of the spliced middle plates is less than 2mm.
The invention preferably carries out first hot pressing on the first cold pressing plate after the core repairing treatment.
According to the invention, the first hot pressing is preferably adopted to accelerate the curing of the soybean meal adhesive in the technical scheme, and meanwhile, the moisture content of the semi-finished product is regulated and controlled.
In the present invention, the temperature of the first hot pressing is preferably 125 ± 3 ℃.
In the present invention, the gauge pressure of the first hot pressing is preferably 8.5 ± 1.5MPa.
In the present invention, the holding time and pressure retention time of the first hot press are preferably 700 ± 90s.
In the present invention, the pressure relief time after completion of the first hot pressing is preferably 600 ± 90s.
In the invention, a first hot pressing plate is obtained after the first hot pressing, and in the invention, the water content of the first hot pressing plate is preferably less than or equal to 10%.
The first hot press is preferably subjected to post-treatment to obtain the semi-finished product. In the present invention, the post-treatment preferably comprises sequentially: the invention has no special requirements on the specific implementation process of the edge cutting. In the invention, the length of the first hot pressing plate after edge cutting is 2460cm, and the width of the first hot pressing plate after edge cutting is 1235cm. In the invention, the putty used for putty coating preferably comprises glue and talcum powder, and the glue preferably accounts for 40-50% of the mass of the talcum powder. The putty is preferably uniformly stirred and then used, the putty scraper has no special requirements on the specific implementation process of the putty scraper, and the putty scraper preferably performs flatness treatment on the defects of cracks, imprints, overlapping and the like on the surface of the first hot pressing plate. In the invention, the sanding preferably comprises a first sanding and a second sanding, the sanding belt for the first sanding is preferably 40-60 meshes, the invention preferably performs one-by-one inspection on the semi-finished product after the first sanding, and performs shunting treatment on defects of degumming, hollowing, poor scraping, incomplete specification and size, excessive water content and the like. The second sanding belt is preferably 80-150 meshes. According to the invention, the first hot pressing plate is preferably subjected to flattening treatment through sanding. In the invention, the water content of the semi-finished product is preferably less than or equal to 10 percent, and more preferably less than or equal to 8 percent.
The veneer layer cladding (hereinafter referred to as second cladding) is recombined to the single surface of the decorative veneer and then is pressed to obtain the pressed veneer.
In the present invention, the facing layer preferably comprises impregnated paper.
In the present invention, the impregnated paper is particularly preferably melamine impregnated bond paper.
The invention has no special requirements for the specific operation of the second cladding.
In the present invention, the temperature of the pressing is preferably 190 ± 10 ℃.
In the present invention, the pressure of the pressing is preferably 12 ± 2MPa.
In the present invention, the holding time and pressure maintaining time of the pressing is preferably 10 to 15 seconds.
In the present invention, the pressing is preferably performed in a pressing machine.
In the invention, the preparation of the semi-finished product and the preparation of the laminated board are not limited in time sequence.
After obtaining a semi-finished product and a laminated board, the invention carries out second pressing after the surface of a decorative veneer in the laminated board is recombined after the front surface and the back surface of the semi-finished product are glued (hereinafter referred to as second gluing), so as to obtain the ecological board, wherein the second pressing comprises the following steps: and sequentially carrying out second cold pressing and second hot pressing.
In the present invention, the second gluing preferably comprises: coating the soybean meal adhesive in the technical scheme on the front and back surfaces of the semi-finished product (hereinafter referred to as second coating) to obtain a semi-finished product of glue distribution, wherein the glue distribution amount of the semi-finished product of glue distribution is preferably 1.1 +/-0.1 kg/piece; covering the front surface and the back surface of the semi-finished product with the adhesive by using the pressing plate (hereinafter referred to as a third covering).
In the present invention, the second coating is preferably performed in a coater. The present invention has no particular requirement for the specific implementation of the second coating.
In the present invention, the second pressing includes: and sequentially carrying out second cold pressing and second hot pressing.
In the present invention, the gauge pressure of the second cold press is preferably 4 ± 1MPa.
In the present invention, the pressing time of the second cold pressing is not less than 60min, preferably 60-80 min.
In the present invention, the temperature of the second hot pressing is preferably 85 ± 5 ℃.
In the present invention, the surface pressure of the second hot pressing is preferably 5 ± 1MPa.
In the present invention, the holding and pressure maintaining time of the second hot press is preferably 600 ± 90s.
In the invention, a second hot pressing plate is obtained after the second hot pressing, and in the invention, the water content of the second hot pressing plate is preferably less than or equal to 12%.
The second hot press is preferably subjected to post-treatment to obtain the ecological plate.
In the present invention, the post-treatment preferably comprises sequentially: the invention has no special requirements on the specific implementation process of the edge cutting. In the invention, the length of the second hot pressing plate after edge cutting is 2440mm, the width is 1220mm, the diagonal error is preferably less than 2mm, and the length and width tolerance is preferably less than or equal to 2mm. In the present invention, the inspection is preferably to inspect the surface of the third hot-pressed board for the presence of white flowers, blisters and indentations.
The soybean meal adhesive provided by the invention is prepared by using high-temperature soybean meal powder in combination with inorganic strong base, an anionic surfactant, talcum powder, wheat flour and water, and the adhesive consumption is less than 0.3 +/-0.1 kg/sheet compared with that of the adhesive prepared from low-temperature soybean meal powder.
In order to further illustrate the present invention, the following embodiments are provided to describe the technical solutions provided by the present invention in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
Adding 95kg of industrial water into a stirring kettle, adding 5kg of sodium hydroxide aqueous solution (2 kg of sodium hydroxide in the sodium hydroxide aqueous solution and 3kg of industrial water) and stirring at the rotating speed of 150r/min, sequentially adding 25kg of high-temperature soybean meal powder and continuously stirring after stirring for 2min, and continuously stirring 0.4kg of lauryl sodium sulfate; adding 1kg of talcum powder, stirring continuously, adding 3kg of wheat flour, adjusting the rotation speed to 120r/min, stirring for 5min, adjusting the rotation speed to 50r/min, and stirring continuously for later use.
Example 2
Adding 95kg of industrial water into a stirring kettle, adding 1.5kg of sodium hydroxide aqueous solution (the mass percentage of sodium hydroxide in the sodium hydroxide aqueous solution is 40%, and the water is the industrial water), stirring at the rotating speed of 150r/min, sequentially adding 25kg of high-temperature soybean meal powder after stirring for 2min, and continuously stirring, wherein 0.4kg of sodium dodecyl sulfate is continuously stirred; adding the rest 3.5kg of sodium hydroxide aqueous solution (the mass percent of sodium hydroxide in the sodium hydroxide aqueous solution is 40%, and the water is industrial water), continuously stirring, adding 1kg of talcum powder, continuously stirring, adding 3kg of wheat flour, adjusting the rotation speed to 120r/min, stirring for 5min, and adjusting the rotation speed to 50r/min, and continuously stirring for later use.
Example 3
Adding 95kg of industrial water into a stirring kettle, adding 2kg of sodium hydroxide aqueous solution (the mass percentage of sodium hydroxide in the sodium hydroxide aqueous solution is 40%, and the water is the industrial water), stirring at the rotating speed of 150r/min, sequentially adding 25kg of high-temperature soybean meal powder after stirring for 2min, and continuously stirring, wherein 0.4kg of lauryl sodium sulfate is continuously stirred; adding the rest 3kg of sodium hydroxide aqueous solution (the mass percentage of sodium hydroxide in the sodium hydroxide aqueous solution is 40%, and water is industrial water), continuously stirring, adding 1kg of talcum powder, continuously stirring, adding 3kg of wheat flour, adjusting the rotation speed to 120r/min, stirring for 5min, and adjusting the rotation speed to 50r/min, and continuously stirring for later use.
Example 4
After the eucalyptus middle plate single plates are arranged, the eucalyptus middle plate single plates are sent into a splicing machine, the splicing machine is adopted to melt the hot melt adhesive, and the hot melt adhesive is coated on a splicing line; and splicing and bonding the middle plate after the splicing lines coated with the hot melt adhesive are attached to the side face of the middle plate, and obtaining the spliced eucalyptus middle plate after the hot melt adhesive is cooled and solidified.
Measuring 2480 + -10 cm long, 1245 + -5 cm wide, water content not more than 12% by climate box method, formaldehyde emission not more than 0.025mg/m 3 After the core plate is finished, sanded and grooved, the core plate is sent into a glue spreader to be glued by the bean pulp adhesive prepared in the example 1 to obtain a glue distribution core plate, the glue distribution amount of the glue distribution core plate is 1.1 +/-0.1 kg/piece, the water content is less than or equal to 12 percent, and the formaldehyde emission is less than or equal to 0.025mg/m measured by a climatic chamber method 3 。
The positive and negative surface that will splice the gum distribution core board of eucalyptus medium plate cladding ensures that core board and concatenation eucalyptus medium plate flange are to it, and the concatenation eucalyptus medium plate is when the positive and negative surface of core board is arranged, and the row seam is less than or equal to 2mm, afterwards, adopts the cold press to coldly press, and the gauge pressure of colding pressing is 13 +/-2 MPa, and the pressurized time of colding pressing is 90min, obtains the cold pressing board, repaiies the core to the cold pressing board and handles, include: repairing the defects of the spliced eucalyptus middle plate; splice eucalyptus median plate defects include: the length and width of the spliced eucalyptus middle plates are less than those of the core plates, the spliced eucalyptus middle plates are overlapped, and the row seam of the middle plates is more than or equal to 5mm. When the length and the width of the spliced eucalyptus middle plate are less than those of the core plate, the eucalyptus middle plate and the core plate are required to be spliced to be equal in length and width after being repaired. When the spliced eucalyptus middle plates are overlapped, the overlapped part of the spliced eucalyptus middle plates is cut off. The row seam of the spliced middle plate is more than or equal to 5mm, a middle plate strip is added after glue is applied to the row seam, and the thickness of the added middle plate strip is preferably consistent with that of the original middle plate; the repaired patching strip is fixed by a plastic gun nail, so that the patching strip is prevented from falling off in the plate feeding operation process during hot pressing. The length of the cold pressing plate after the core trimming treatment is 2490 +/-10 cm; the width is 1250 +/-5 cm; the row gap of the spliced middle plates is less than 2mm.
And hot-pressing the cold-pressed plate subjected to core repairing treatment in a hot press. The hot pressing temperature is 125 +/-3 ℃, and the hot pressing surface pressure is as follows: 8.5 +/-1.5 MPa, the pressure bearing time of hot pressing is 700 +/-90 s, the pressure relief time after hot pressing is 600 +/-90 s, a hot pressing plate is obtained after hot pressing, the water content is less than or equal to 12%, and the hot pressing plate is sequentially subjected to the following steps: cutting edges, putty scraping and sanding, wherein the length of the hot pressing plate after edge cutting is 2460cm, and the width of the hot pressing plate after edge cutting is 1235cm. The putty used for putty scraping comprises glue and talcum powder, wherein the glue accounts for 40-50% of the mass of the talcum powder. The putty is used after being uniformly stirred, and the flatness treatment is carried out on the defects of cracks, imprints, overlapping and the like on the surface of the hot pressing plate through the putty scraping. The sanding preferably comprises sanding by adopting a 40-60-mesh sanding belt, and then sanding again by adopting a 80-150-mesh sanding belt; and (3) inspecting the semi-finished products after one-time sanding one by one, and shunting the defects of degumming, hollowing, poor greasing, improper specification and size, over-standard moisture content and the like. Then sanding for the second time to obtain a semi-finished product, wherein the water content of the semi-finished product is less than or equal to 10 percent;
covering one surface of the recombined decorative veneer on the melamine impregnated bond paper, and then pressing and pasting in a pressing and pasting machine, wherein the pressing and pasting temperature is 190 +/-10 ℃, the pressing and pasting surface pressure is 12 +/-2 MPa, and the pressing and pasting time is 15s, so that a pressing and pasting board is obtained, and then water mist treatment is carried out, and the pressing and pasting board is prevented from being bent and wrinkled.
And (3) feeding the semi-finished product into a glue spreader to spread glue by using the soybean meal adhesive prepared in the embodiment, wherein the glue spreading amount of the glue spreading semi-finished product is 1.1 +/-0.1 kg/sheet, and the glue spreading amount of the whole board is required to be uniform.
After the front surface and the back surface of the semi-finished product of the cloth adhesive are coated on the surface of the pressing plate which is not pressed with the melamine impregnated bond paper, cold pressing is carried out by a cold press, the cold pressing surface pressure is 4 +/-1 MPa, the cold pressing pressure time is 60min, the obtained cold pressing plate is sent into a hot press for hot pressing, the hot pressing temperature is 85 +/-5 ℃, the hot pressing pressure time is 600 +/-60 s, the hot pressing surface pressure is 5 +/-1 MPa, after the hot pressing plate is obtained, edge cutting and inspection are sequentially carried out, and the ecological plate with the length of 2440cm and the width of 1220cm is obtained.
Example 5
The preparation method is basically the same as that of example 4, except that: the preparation of the ecological plate was carried out using the soybean meal adhesive prepared in example 2.
Example 6
The preparation method is basically the same as that of example 4, except that: the preparation of the ecological plate was performed using the soybean meal adhesive prepared in example 3.
Comparative example 1
100kg of PAE epoxy resin (with the solid content of about 6%) and 50kg of low-temperature soybean meal powder are taken and stirred and mixed for standby.
Comparative example 2
Mixing urea-formaldehyde resin glue 100kg and wheat flour 36kg, stirring and mixing for later use.
Comparative example 3
After the eucalyptus middle plate single plates are arranged, the eucalyptus middle plate single plates are sent into a splicing machine, the splicing machine is adopted to melt the hot melt adhesive, and the hot melt adhesive is coated on a splicing line; and splicing and bonding the middle plate after the splicing lines coated with the hot melt adhesive are attached to the side face of the middle plate, and obtaining the spliced eucalyptus middle plate after the hot melt adhesive is cooled and solidified.
The length of 2480 +/-10 cm, the width of 1245 +/-5 cm, the water content of less than or equal to 12 percent and the formaldehyde emission of less than or equal to 0.025mg/m are measured by adopting a climatic chamber method 3 After the core plate is finished, sanded and grooved, the core plate is sent into a glue spreader to be glued by the bean pulp adhesive prepared in the comparative example 1 to obtain a glue distribution core plate, the glue distribution amount of the glue distribution core plate is 1.5 +/-0.1 kg/piece, the water content is less than or equal to 12 percent, and the formaldehyde emission is less than or equal to 0.025mg/m measured by a climatic box method 3 。
The positive and negative surface that will splice the gum distribution core board of eucalyptus medium plate cladding ensures that core board and concatenation eucalyptus medium plate flange are to it, and the concatenation eucalyptus medium plate is when the positive and negative surface of core board is arranged, and the row seam is less than or equal to 2mm, afterwards, adopts the cold press to coldly press, and the gauge pressure of colding pressing is 13 +/-2 MPa, and the pressurized time of colding pressing is 90min, obtains the cold pressing board, repaiies the core to the cold pressing board and handles, include: the defects of the spliced eucalyptus middle plate are overcome; splice eucalyptus median plate defects include: the length and width of the spliced eucalyptus middle plates are less than those of the core plates, the spliced eucalyptus middle plates are overlapped, and the row seam of the middle plates is more than or equal to 5mm. When the length and the width of the spliced eucalyptus middle plate are less than those of the core plate, the eucalyptus middle plate and the core plate are required to be spliced to be equal in length and width after being repaired. When the spliced eucalyptus middle plates are overlapped, the overlapped part of the spliced eucalyptus middle plates is cut off. The row seam of the spliced middle plate is more than or equal to 5mm, a middle plate strip is added after glue is applied to the row seam, and the thickness of the added middle plate strip is preferably consistent with that of the original middle plate; the repaired patching strip is fixed by a plastic gun nail, so that the patching strip is prevented from falling off in the plate feeding operation process during hot pressing. The length of the cold pressing plate after core repairing treatment is 2490 +/-10 cm; the width is 1250 +/-5 cm; the row gap of the spliced middle plates is less than 2mm.
And hot-pressing the cold-pressed plate subjected to core repairing treatment in a hot press. The hot pressing temperature is 125 +/-3 ℃, and the hot pressing surface pressure is as follows: 8.5 +/-1.5 MPa, the pressurized time of hot pressing is 700 +/-90 s, the pressure relief time after hot pressing is 600 +/-90 s, a hot pressing plate is obtained after hot pressing, the water content is less than or equal to 12 percent, and the hot pressing plate is sequentially subjected to the following steps: cutting edges, putty coating and sanding, wherein the length of the hot pressing plate after edge cutting is 2460cm, and the width of the hot pressing plate is 1235cm. The putty used for putty scraping comprises glue and talcum powder, wherein the glue accounts for 40-50% of the mass of the talcum powder. The putty is used after being uniformly stirred, and the flatness treatment is carried out on the defects of cracks, imprints, overlapping and the like on the surface of the hot pressing plate through the putty scraping. The sanding preferably comprises sanding by using a 40-60-mesh sanding belt, and then sanding again by using an 80-150-mesh sanding belt; and (3) carrying out one-by-one inspection on the semi-finished products after one-time sanding, and carrying out shunting treatment on defects of degumming, hollowing, poor scraping, improper specification and size, overproof water content and the like. Then sanding for the second time to obtain a semi-finished product, wherein the water content of the semi-finished product is less than or equal to 10 percent;
and covering one surface of the recombined decorative veneer with the melamine impregnated bond paper, and then pressing and pasting in a pressing and pasting machine, wherein the pressing and pasting temperature is 190 +/-10 ℃, the pressing and pasting surface pressure is 12 +/-2 MPa, and the pressing and pasting pressure time is 15s, so that after a pressing and pasting plate is obtained, water mist treatment is performed, and the pressing and pasting plate is prevented from bending and wrinkling.
And (3) feeding the semi-finished product into a glue spreader to spread glue by using the soybean meal adhesive prepared in the embodiment, wherein the glue spreading amount of the glue spreading semi-finished product is 1.4 +/-0.1 kg/sheet, and the glue spreading amount of the whole board is required to be uniform.
After the front surface and the back surface of the semi-finished product of the cloth adhesive are coated on the surface of the pressing plate which is not pressed with the melamine impregnated bond paper, cold pressing is carried out by a cold press, the cold pressing surface pressure is 4 +/-1 MPa, the cold pressing pressure time is 60min, the obtained cold pressing plate is sent into a hot press for hot pressing, the hot pressing temperature is 85 +/-5 ℃, the hot pressing pressure time is 600 +/-60 s, the hot pressing surface pressure is 5 +/-1 MPa, after the hot pressing plate is obtained, edge cutting and inspection are sequentially carried out, and the ecological plate with the length of 2440cm and the width of 1220cm is obtained.
Comparative example 4
Substantially the same as the preparation method of comparative example 3 except that: the bean pulp adhesive prepared in the comparative example 2 is adopted to prepare the ecological plate, and the glue distribution amount is 1.4 +/-0.1 kg/sheet.
Test example
The ecological boards prepared in examples 4 to 6 and comparative examples 3 and 4 were tested for impregnation stripping and formaldehyde emission, wherein the bonding strength of the ecological boards at this time was measured by: GB/T34722 and GB/T17657. Test example results are shown in Table 1 and the index
Table 1 results of performance test of the ecological plates prepared in examples 4 to 6
Table 2 results of performance test of the ecological plates prepared in comparative examples 3 and 4
From table 2 it can be derived: although the qualification rate of the dipping and stripping test of the ecological plate obtained in the comparative example 3 also meets 100%, the raw material for preparing the soybean meal adhesive used in the comparative example 3 is low-temperature soybean meal powder, the cost of the raw material is obviously higher than that of the adhesive prepared by adopting high-temperature soybean meal powder in the examples 1-3 of the invention, and the adhesive coating amount is large and is higher than that of the product in the examples of the invention, so that the cost is high.
Although the above embodiments have been described in detail, they are only a part of the embodiments of the present invention, not all of the embodiments, and other embodiments can be obtained without inventive step according to the embodiments, and all of the embodiments belong to the protection scope of the present invention.
Claims (10)
1. The soybean meal adhesive is characterized by comprising the following components in parts by mass:
1 to 3 portions of inorganic strong base, 20 to 30 portions of soybean meal, 0.1 to 0.5 portion of anionic surfactant, 0.5 to 3 portions of talcum powder, 1 to 5 portions of wheat flour and 92 to 100 portions of water.
2. The soybean meal adhesive according to claim 1, wherein the strong inorganic base is an alkali metal hydroxide.
3. The soybean meal adhesive of claim 1, wherein the anionic surfactant comprises sodium dodecyl sulfate and/or sodium dodecyl benzene sulfonate.
4. The soybean meal adhesive according to claim 1, wherein the fineness of the wheat flour is greater than the fineness of the soybean meal.
5. The soybean meal adhesive according to claim 4, wherein the fineness of the wheat flour is 86 ± 20 meshes.
6. The soybean meal adhesive according to claim 4, wherein the fineness of the soybean meal is 200 ± 50 meshes.
7. The soybean meal adhesive according to claim 1, wherein the fineness of the talc powder is 300 ± 50 meshes.
8. The soybean meal adhesive according to any one of claims 1 to 7, which is characterized by comprising the following components in parts by mass:
2 parts of inorganic strong base, 25 parts of soybean meal, 0.4 part of anionic surfactant, 1 part of talcum powder, 3 parts of wheat flour and 98 parts of water.
9. The preparation method of the ecological plate is characterized by comprising the following steps of:
(1) Carrying out first pressing after splicing the middle plate on the front surface and the back surface of the core plate in a gluing way to obtain a semi-finished product, wherein the first pressing comprises the following steps: sequentially carrying out first cold pressing and first hot pressing;
(2) Laminating the veneer layer with the single face of the recombined decorative veneer to obtain a laminated board;
(3) And carrying out second pressing after the surface of the recombined decorative veneer in the pressure pasting board is glued on the front and back surfaces of the semi-finished product to obtain the ecological board, wherein the second pressing comprises the following steps: carrying out second cold pressing and second hot pressing in sequence;
the adhesive used in the gluing in the step (1) and the step (3) is the soybean meal adhesive according to any one of claims 1 to 8;
the step (1) and the step (2) have no time sequence limitation.
10. The method of claim 9, wherein the first hot pressing is carried out for a dwell time of 700 ± 90s; and the heat preservation and pressure maintaining time of the second hot pressing is 600 +/-90 s.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059026A2 (en) * | 2000-02-11 | 2001-08-16 | Heartland Resource Technologies Llc | Vegetable protein adhesive compositions |
| CN103144178A (en) * | 2013-03-11 | 2013-06-12 | 浙江省林业科学研究院 | Production method of aldehyde-free bamboo floor |
| CN105885773A (en) * | 2016-06-30 | 2016-08-24 | 上海东和胶粘剂有限公司 | Biomass non-formaldehyde adhesive for artificial board and preparation method thereof |
| CN106047280A (en) * | 2016-06-30 | 2016-10-26 | 上海东和胶粘剂有限公司 | Artificial veneer composite formaldehyde-free adhesive and preparation method thereof |
| CN108084958A (en) * | 2017-11-03 | 2018-05-29 | 中国林业科学研究院林产化学工业研究所 | A kind of preparation based on first glutinous agent modified double components dregs of beans adhesive and its application on type Ⅰ plywood |
| CN108641673A (en) * | 2018-05-10 | 2018-10-12 | 北京盛大华源科技有限公司 | A kind of preparation method of plywood without formaldehyde release |
| CN109135662A (en) * | 2017-06-15 | 2019-01-04 | 山东绿点环保材料有限公司 | Rubber made from soybean cake and preparation method thereof and the method for producing thistle board using rubber made from soybean cake |
| CN110835518A (en) * | 2019-11-27 | 2020-02-25 | 中国林业科学研究院木材工业研究所 | Formaldehyde-free soybean protein powder adhesive and preparation method and application thereof |
| CN111732928A (en) * | 2020-07-10 | 2020-10-02 | 宁波中科朝露新材料有限公司 | Method for preparing soybean-based adhesive by adopting soybean meal for feed and application of soybean-based adhesive |
-
2022
- 2022-09-01 CN CN202211067046.6A patent/CN115433543A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001059026A2 (en) * | 2000-02-11 | 2001-08-16 | Heartland Resource Technologies Llc | Vegetable protein adhesive compositions |
| CN103144178A (en) * | 2013-03-11 | 2013-06-12 | 浙江省林业科学研究院 | Production method of aldehyde-free bamboo floor |
| CN105885773A (en) * | 2016-06-30 | 2016-08-24 | 上海东和胶粘剂有限公司 | Biomass non-formaldehyde adhesive for artificial board and preparation method thereof |
| CN106047280A (en) * | 2016-06-30 | 2016-10-26 | 上海东和胶粘剂有限公司 | Artificial veneer composite formaldehyde-free adhesive and preparation method thereof |
| CN109135662A (en) * | 2017-06-15 | 2019-01-04 | 山东绿点环保材料有限公司 | Rubber made from soybean cake and preparation method thereof and the method for producing thistle board using rubber made from soybean cake |
| CN108084958A (en) * | 2017-11-03 | 2018-05-29 | 中国林业科学研究院林产化学工业研究所 | A kind of preparation based on first glutinous agent modified double components dregs of beans adhesive and its application on type Ⅰ plywood |
| CN108641673A (en) * | 2018-05-10 | 2018-10-12 | 北京盛大华源科技有限公司 | A kind of preparation method of plywood without formaldehyde release |
| CN110835518A (en) * | 2019-11-27 | 2020-02-25 | 中国林业科学研究院木材工业研究所 | Formaldehyde-free soybean protein powder adhesive and preparation method and application thereof |
| CN111732928A (en) * | 2020-07-10 | 2020-10-02 | 宁波中科朝露新材料有限公司 | Method for preparing soybean-based adhesive by adopting soybean meal for feed and application of soybean-based adhesive |
Non-Patent Citations (2)
| Title |
|---|
| 赵国忠等: "《酱油风味与酿造技术》", 31 August 2020, 中国轻工业出版社, pages: 21 - 22 * |
| 高强等: "《大豆蛋白基木材胶黏剂耐水胶接实践与理论》", 30 June 2014, 煤炭工业出版社, pages: 5 - 11 * |
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