CN113733262A - Surface dipping wear-resistant treatment process for environment-friendly plate - Google Patents
Surface dipping wear-resistant treatment process for environment-friendly plate Download PDFInfo
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- CN113733262A CN113733262A CN202111006008.5A CN202111006008A CN113733262A CN 113733262 A CN113733262 A CN 113733262A CN 202111006008 A CN202111006008 A CN 202111006008A CN 113733262 A CN113733262 A CN 113733262A
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/285—Nitrogen containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3228—Polyamines acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6692—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/34
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention provides a surface dipping wear-resistant treatment process for an environment-friendly plate, and belongs to the technical field of household. The board comprises a fiber board and a wear-resistant impregnated adhesive film paper layer, the wear-resistant impregnated adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and the surface impregnation wear-resistant treatment process for the environment-friendly board comprises the following steps: s1: preparing an impregnation liquid; s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying under the vacuum condition; s3: and preparing the impregnated bond paper sheet. The invention takes formaldehyde-free isophorone diisocyanate as a main raw material of the impregnating solution, imidazole based pyruvic acid as a sealing agent in the process of preparing the impregnating solution, closed aqueous polyurethane emulsion is prepared by adopting a self-emulsifying technology as the impregnating solution, and the imidazole based pyruvic acid can be used as a cross-linking agent of resin, so that the wear resistance of the surface of the impregnated bond paper sheet can be improved.
Description
Technical Field
The invention belongs to the technical field of home furnishing, and particularly relates to a surface dipping wear-resistant treatment process for an environment-friendly plate.
Background
The reasonable utilization of resources is emphasized by human beings in the 21 st century, the artificial boards have diverse forms such as shaving boards, fiber boards, plywood and the like, but the anisotropy of wood products is structurally improved, the dimensional stability of products is improved, the wood resources are fully utilized, the surface aesthetics of the artificial boards are poor, and the development of the secondary processing industry of the artificial boards enables the surface decoration of modern wood materials to form a development pattern based on the surface decoration of the artificial boards. The impregnated base material used for the impregnated bond paper is mainly made of specially produced base paper (a small amount of non-woven fabrics and fabrics), the solvent is volatilized by drying after the impregnation of synthetic resin, the resin impregnated bond paper is prepared and covers the surface of the base material of the artificial board, and the bond paper is hot-pressed and bonded on the surface of the base material to form a protective film, so that the economic benefit of the artificial board is greatly improved. Currently, the international impregnated paper accounts for 70% of the production of the surface finishing material for artificial boards.
With the development of national economic level, the impregnated paper veneer artificial board is widely applied to the fields of furniture manufacture of various gears, interior decoration of buildings, various instruments, table boards of equipment, shells of electrical equipment and the like. The artificial board decorated by the impregnated paper not only has improved appearance and inside, but also can effectively separate the external environment from the artificial board base material, prevent harmful substances such as formaldehyde, phenol and the like in the base material from being emitted into the environment, and improve the environmental protection property of the board.
Most of impregnating resins used by impregnating paper in the current market are adhesives containing formaldehyde (urea-formaldehyde resin, phenolic resin and melamine formaldehyde resin), the artificial board decorated by the impregnating paper can release formaldehyde more or less in use, and the formaldehyde in indoor air exceeds the standard due to large consumption of household furniture, so that the health of people is seriously influenced.
Disclosure of Invention
The invention provides a surface impregnation wear-resistant treatment process for an environment-friendly board, and solves the technical problem that an artificial board with an impregnated paper veneer in the prior art contains formaldehyde.
In order to achieve the purpose, the technical solution of the invention is as follows:
the surface impregnation wear-resistant treatment process for the environment-friendly board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, wherein the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and comprises the following steps:
s1: preparation of the impregnation liquid: placing dihydroxy polyether in a container, dehydrating for 2-3h at the temperature of 120-125 ℃ and the vacuum degree of-0.1 Mpa, cooling to 50-60 ℃, magnetically stirring for 2-4h under the protection of nitrogen, then adding isophorone diisocyanate, stirring for 10-20min at normal temperature, slowly heating to 75-85 ℃, and continuing to react for 80-100 min; then, cooling the reaction temperature to 55-65 ℃, adding imidazolyl pyruvic acid, continuing to react for 2-4h, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying under the vacuum condition;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber board, putting the fiber board into a hot press machine, wherein the temperature of the hot press machine is 55-65 ℃, the upper press table is fixed with a plane stainless steel template with the gloss degree of 500-.
Preferably, the impregnating solution comprises, by weight, 20-36 parts of isophorone diisocyanate, 12-18 parts of dihydroxy polyether, 10-15 parts of dimethylolpropionic acid, 8-12 parts of N-methylpyrrolidone, 5-9 parts of imidazolyl pyruvic acid, 1-3 parts of caprolactam, 1-4 parts of ethylenediamine and 5-8 parts of nano silicon dioxide.
Preferably, the impregnating solution comprises the following raw materials of 28 parts of isophorone diisocyanate, 15 parts of dihydroxy polyether, 13 parts of dimethylolpropionic acid, 10 parts of N-methyl pyrrolidone, 7 parts of imidazolyl pyruvic acid, 2 parts of caprolactam, 3 parts of ethylenediamine and 6 parts of nano silicon dioxide by weight part.
Preferably, the step S1 is performed by adding deionized water of ethylenediamine under ice bath conditions for emulsification.
Preferably, the degree of vacuum in the vacuum condition in the step S2 is-0.08 to-0.1 Mpa.
Preferably, the decorative base paper is dried at normal temperature in the step S2, and the drying time is 1-2 h.
Preferably, the step S2 of impregnating the adhesive film paper further includes a second impregnation step of impregnating the adhesive film paper once impregnated in the step S2 into the polyurethane impregnation liquid prepared in the step S1 again, and then drying the impregnated adhesive film paper under vacuum.
The invention has the beneficial effects that:
the invention takes formaldehyde-free isophorone diisocyanate as a main raw material of the impregnating solution, imidazole based pyruvic acid as a sealing agent in the process of preparing the impregnating solution, closed aqueous polyurethane emulsion is prepared by adopting a self-emulsifying technology as the impregnating solution, and the imidazole based pyruvic acid can be used as a cross-linking agent of resin, so that the wear resistance of the surface of the impregnated bond paper sheet can be improved, and the problem of free formaldehyde pollution of the existing sheet can be solved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
The surface impregnation wear-resistant treatment process for the environment-friendly board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, wherein the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and comprises the following steps:
s1: preparation of the impregnation liquid: the dipping solution comprises the following raw materials of 28 parts of isophorone diisocyanate, 15 parts of dihydroxy polyether, 13 parts of dimethylolpropionic acid, 10 parts of N-methyl pyrrolidone, 7 parts of imidazolyl pyruvic acid, 2 parts of caprolactam, 3 parts of ethylenediamine and 6 parts of nano silicon dioxide by weight. The preparation method comprises placing dihydroxy polyether in a container, dehydrating at 125 deg.C under-0.1 Mpa for 2h, cooling to 50 deg.C, magnetically stirring for 3h under the protection of nitrogen, adding isophorone diisocyanate, stirring at room temperature for 20min, slowly heating to 80 deg.C, and reacting for 80 min; then, cooling the reaction temperature to 65 ℃, adding imidazolyl pyruvic acid, continuing to react for 3 hours, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification under an ice bath condition to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying for 1.5h under the vacuum condition that the vacuum degree is-0.09 Mpa; soaking the secondary impregnated adhesive film paper in the polyurethane impregnation liquid prepared in the step S1 again for secondary impregnation, and then drying for 1h under the vacuum condition that the vacuum degree is-0.08 Mpa;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber plate, putting the fiber plate into a hot press with the temperature of 55 ℃, the gloss of a plane stainless steel template fixed on an upper press table at 500 ℃ and the matte plane stainless steel template fixed on a lower press table, closing the hot press, carrying out hot pressing for 4min under the conditions that the temperature of the lower press table is 180 ℃, the temperature of the upper press table is 185 ℃ and the pressure is 3MPa, then cooling to 60 ℃, releasing the pressure, opening the press table, and taking out the impregnated bond paper plate.
Example 2
The surface impregnation wear-resistant treatment process for the environment-friendly board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, wherein the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and comprises the following steps:
s1: preparation of the impregnation liquid: the dipping solution comprises the following raw materials of 36 parts of isophorone diisocyanate, 12 parts of dihydroxy polyether, 15 parts of dimethylolpropionic acid, 10 parts of N-methyl pyrrolidone, 5 parts of imidazolyl pyruvic acid, 2 parts of caprolactam, 4 parts of ethylenediamine and 5 parts of nano silicon dioxide by weight. The preparation method comprises placing dihydroxy polyether in a container, dehydrating for 2.5h at 120 deg.C under-0.1 Mpa, cooling to 55 deg.C, magnetically stirring for 4h under the protection of nitrogen, adding isophorone diisocyanate, stirring at room temperature for 10min, slowly heating to 85 deg.C, and continuing to react for 90 min; then, cooling the reaction temperature to 55 ℃, adding imidazolyl pyruvic acid, continuing to react for 4 hours, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification under an ice bath condition to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying for 2h under the vacuum condition that the vacuum degree is-0.1 Mpa; soaking the secondary impregnated adhesive film paper in the polyurethane impregnation liquid prepared in the step S1 again for secondary impregnation, and then drying for 1.5h under the vacuum condition that the vacuum degree is-0.09 Mpa;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber plate, putting the fiber plate into a hot press machine, wherein the hot press machine is provided with an upper press table fixed with a plane stainless steel template with the glossiness of 600 ℃ and a lower press table fixed with a matte plane stainless steel template, closing the hot press machine, carrying out hot pressing for 2min under the conditions that the temperature of the lower press table is 175 ℃, the temperature of the upper press table is 180 ℃ and the pressure is 2MPa, then cooling to 65 ℃, releasing the pressure, opening the press table, and taking out the impregnated bond paper plate.
Example 3
The surface impregnation wear-resistant treatment process for the environment-friendly board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, wherein the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and comprises the following steps:
s1: preparation of the impregnation liquid: the dipping solution comprises the following raw materials of 20 parts of isophorone diisocyanate, 15 parts of dihydroxy polyether, 10 parts of dimethylolpropionic acid, 12 parts of N-methyl pyrrolidone, 8 parts of imidazolyl pyruvic acid, 3 parts of caprolactam, 1 part of ethylenediamine and 7 parts of nano silicon dioxide by weight. The preparation method comprises placing dihydroxy polyether in a container, dehydrating at 123 deg.C under-0.1 Mpa for 3h, cooling to 60 deg.C, magnetically stirring for 2h under the protection of nitrogen, adding isophorone diisocyanate, stirring at room temperature for 15min, slowly heating to 75 deg.C, and reacting for 100 min; then, cooling the reaction temperature to 60 ℃, adding imidazolyl pyruvic acid, continuing to react for 2 hours, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification under an ice bath condition to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying for 1h under the vacuum condition that the vacuum degree is-0.08 pa; soaking the secondary impregnated adhesive film paper in the polyurethane impregnation liquid prepared in the step S1 again for secondary impregnation, and then drying for 2 hours under the vacuum condition that the vacuum degree is-0.1 Mpa;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber plate, putting the fiber plate into a hot press machine, wherein the hot press machine is provided with a planar stainless steel template with the temperature of 65 ℃, an upper press table for fixing the glossiness of 700 ℃ and a lower press table for fixing the matte planar stainless steel template, closing the hot press machine, carrying out hot pressing for 3min under the conditions that the temperature of the lower press table is 180 ℃, the temperature of the upper press table is 185 ℃ and the pressure is 3MPa, then cooling to 55 ℃, releasing the pressure, opening the press table, and taking out the impregnated bond paper plate.
Example 4
The surface impregnation wear-resistant treatment process for the environment-friendly board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, wherein the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and comprises the following steps:
s1: preparation of the impregnation liquid: the dipping solution comprises the following raw materials of 33 parts of isophorone diisocyanate, 15 parts of dihydroxy polyether, 12 parts of dimethylolpropionic acid, 10 parts of N-methyl pyrrolidone, 7 parts of imidazolyl pyruvic acid, 2 parts of caprolactam, 2 parts of ethylenediamine and 8 parts of nano silicon dioxide by weight. The preparation method comprises placing dihydroxy polyether in a container, dehydrating at 120 deg.C under-0.1 Mpa for 2h, cooling to 55 deg.C, magnetically stirring for 3h under the protection of nitrogen, adding isophorone diisocyanate, stirring at room temperature for 15min, slowly heating to 80 deg.C, and reacting for 90 min; then, cooling the reaction temperature to 60 ℃, adding imidazolyl pyruvic acid, continuing to react for 3 hours, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification under an ice bath condition to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying for 2h under the vacuum condition that the vacuum degree is-0.1 Mpa; soaking the secondary impregnated adhesive film paper in the polyurethane impregnation liquid prepared in the step S1 again for secondary impregnation, and then drying for 2 hours under the vacuum condition that the vacuum degree is-0.1 Mpa;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber plate, putting the fiber plate into a hot press machine, wherein the temperature is 60 ℃, the upper press table is fixed with a plane stainless steel template with the glossiness of 600 ℃, the lower press table is fixed with a matte plane stainless steel template, closing the hot press machine, carrying out hot pressing for 3min under the conditions that the temperature of the lower press table is 185 ℃, the temperature of the upper press table is 180 ℃ and the pressure is 2.5MPa, then cooling to 60 ℃, releasing the pressure, opening the press table, and taking out the impregnated bond paper plate.
The plates of examples 1 to 4 were cut into 120mm by 120mm plates, the surfaces of the plates were cleaned with absorbent gauze and weighed, and then fixed on a wear tester, 180 mesh sandpaper was attached to a grinding wheel, the plates were ground for 100 revolutions and then cleaned and weighed, and the surface wear resistance was calculated to obtain the plate surface wear values, with the following results:
group of | Surface abrasion value (mg/r) |
Example 1 | 0.615 |
Example 2 | 0.652 |
Example 3 | 0.656 |
Example 4 | 0.598 |
From the above table, the plate of the present invention has a better wear resistance, because the nano silica is added into the impregnation liquid of the present invention, and the nano silica is added into the impregnation liquid as a wear resistant material, which can improve the surface wear resistance of the plate.
In addition, the invention takes the formaldehyde-free isophorone diisocyanate as the main raw material of the dipping solution, the imidazolyl pyruvic acid as the sealing agent in the process of preparing the dipping solution, the self-emulsifying technology is adopted to prepare the closed aqueous polyurethane emulsion as the dipping solution, and the imidazolyl pyruvic acid can be used as the cross-linking agent of the resin, so that the wear resistance of the surface of the impregnated bond paper sheet can be improved, and the problem of free formaldehyde pollution of the existing sheet can be solved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or other related fields directly or indirectly are included in the scope of the present invention.
Claims (7)
1. The surface impregnation wear-resistant treatment process for the environment-friendly board is characterized in that the board comprises a fiber board and a wear-resistant impregnation adhesive film paper layer, the wear-resistant impregnation adhesive film paper layer is arranged on the upper surface layer and the lower surface layer of the fiber board, and the surface impregnation wear-resistant treatment process for the environment-friendly board comprises the following steps:
s1: preparation of the impregnation liquid: placing dihydroxy polyether in a container, dehydrating for 2-3h at the temperature of 120-125 ℃ and the vacuum degree of-0.1 Mpa, cooling to 50-60 ℃, magnetically stirring for 2-4h under the protection of nitrogen, then adding isophorone diisocyanate, stirring for 10-20min at normal temperature, slowly heating to 75-85 ℃, and continuing to react for 80-100 min; then, cooling the reaction temperature to 55-65 ℃, adding imidazolyl pyruvic acid, continuing to react for 2-4h, cooling the temperature to room temperature, adding caprolactam, stirring, and then adding deionized water of ethylenediamine for emulsification to obtain a polyurethane impregnation solution;
s2: preparing impregnated bond paper: dipping the decorative base paper into the polyurethane dipping solution prepared in the step S1, and then drying under the vacuum condition;
s3: preparing an impregnated bond paper sheet: wrapping the impregnated bond paper on a fiber board, putting the fiber board into a hot press machine, wherein the temperature of the hot press machine is 55-65 ℃, the upper press table is fixed with a plane stainless steel template with the gloss degree of 500-.
2. The surface impregnation wear-resistant treatment process of the environment-friendly board as claimed in claim 1, wherein the impregnation liquid comprises, by weight, 20-36 parts of isophorone diisocyanate, 12-18 parts of dihydroxy polyether, 10-15 parts of dimethylolpropionic acid, 8-12 parts of N-methylpyrrolidone, 5-9 parts of imidazolyl pyruvic acid, 1-3 parts of caprolactam, 1-4 parts of ethylenediamine and 5-8 parts of nano silica.
3. The surface dipping wear-resistant treatment process of the environment-friendly board as claimed in claim 2, wherein the dipping solution comprises the following raw materials, by weight, 28 parts of isophorone diisocyanate, 15 parts of dihydroxy polyether, 13 parts of dimethylolpropionic acid, 10 parts of N-methyl pyrrolidone, 7 parts of imidazolyl pyruvic acid, 2 parts of caprolactam, 3 parts of ethylenediamine and 6 parts of nano silica.
4. The surface impregnation abrasion-resistant treatment process for the environment-friendly plate according to claim 1, wherein the step S1 is performed by adding deionized water of ethylenediamine under ice bath conditions for emulsification.
5. The surface impregnation wear-resistant treatment process for the environment-friendly board as claimed in claim 1, wherein the vacuum degree in the step S2 under the vacuum condition is-0.08 to-0.1 MPa.
6. The surface impregnation wear-resistant treatment process of the environment-friendly board as claimed in claim 5, wherein the decorative base paper in the step S2 is dried at normal temperature for 1-2 h.
7. The surface impregnation wear-resistant treatment process of the environment-friendly board material as claimed in claim 6, wherein the step S2 of impregnating the adhesive film paper further comprises a second impregnation step of impregnating the adhesive film paper once impregnated in the step S2 into the polyurethane impregnation liquid prepared in the step S1 again, and then drying the impregnated adhesive film paper under a vacuum condition.
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