CN116475044B - Wooden door surface treatment process - Google Patents
Wooden door surface treatment process Download PDFInfo
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- CN116475044B CN116475044B CN202310407627.8A CN202310407627A CN116475044B CN 116475044 B CN116475044 B CN 116475044B CN 202310407627 A CN202310407627 A CN 202310407627A CN 116475044 B CN116475044 B CN 116475044B
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000008569 process Effects 0.000 title claims abstract description 22
- 238000004381 surface treatment Methods 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 67
- 239000011248 coating agent Substances 0.000 claims abstract description 64
- 229960000892 attapulgite Drugs 0.000 claims abstract description 32
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 32
- 239000011521 glass Substances 0.000 claims abstract description 25
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000005011 phenolic resin Substances 0.000 claims abstract description 21
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims abstract description 16
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims abstract description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- 239000004922 lacquer Substances 0.000 claims abstract description 16
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052863 mullite Inorganic materials 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 26
- 239000011247 coating layer Substances 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 9
- 239000003513 alkali Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract description 8
- 238000011282 treatment Methods 0.000 abstract description 8
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- 230000000052 comparative effect Effects 0.000 description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
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- RMTXUPIIESNLPW-UHFFFAOYSA-N 1,2-dihydroxy-3-(pentadeca-8,11-dienyl)benzene Natural products CCCC=CCC=CCCCCCCCC1=CC=CC(O)=C1O RMTXUPIIESNLPW-UHFFFAOYSA-N 0.000 description 1
- QARRXYBJLBIVAK-UEMSJJPVSA-N 3-[(8e,11e)-pentadeca-8,11-dienyl]benzene-1,2-diol;3-[(8e,11e)-pentadeca-8,11,14-trienyl]benzene-1,2-diol;3-[(8e,11e,13e)-pentadeca-8,11,13-trienyl]benzene-1,2-diol;3-[(e)-pentadec-8-enyl]benzene-1,2-diol;3-pentadecylbenzene-1,2-diol Chemical group CCCCCCCCCCCCCCCC1=CC=CC(O)=C1O.CCCCCC\C=C\CCCCCCCC1=CC=CC(O)=C1O.CCC\C=C\C\C=C\CCCCCCCC1=CC=CC(O)=C1O.C\C=C\C=C\C\C=C\CCCCCCCC1=CC=CC(O)=C1O.OC1=CC=CC(CCCCCCC\C=C\C\C=C\CC=C)=C1O QARRXYBJLBIVAK-UEMSJJPVSA-N 0.000 description 1
- IYROWZYPEIMDDN-UHFFFAOYSA-N 3-n-pentadec-8,11,13-trienyl catechol Natural products CC=CC=CCC=CCCCCCCCC1=CC=CC(O)=C1O IYROWZYPEIMDDN-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
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- 208000027418 Wounds and injury Diseases 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- DQTMTQZSOJMZSF-UHFFFAOYSA-N urushiol Natural products CCCCCCCCCCCCCCCC1=CC=CC(O)=C1O DQTMTQZSOJMZSF-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D135/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/22—Glazing, e.g. vaccum glazing
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Paints Or Removers (AREA)
Abstract
The application discloses a wooden door surface treatment process, and belongs to the technical field of wooden door preparation. The treatment process comprises the following steps: sequentially coating a first coating and a second coating on the surface of the door core; wherein, the first coating is prepared from the following raw materials in parts by weight: 60-80 parts of maleic acid-acrylic acid copolymer, 6-15 parts of modified attapulgite, 3-10 parts of glass flakes and 0.2-0.8 part of silane coupling agent a; wherein, the second coating is prepared from the following raw materials in parts by weight: 20-40 parts of raw lacquer, 50-80 parts of phenolic resin, 5-12 parts of mullite powder, 2-8 parts of white oil and 0.6-1.2 parts of silane coupling agent b. According to the application, substances are optimized, the components of the substances are simple, the types are few, the interaction between the first coating and the door core, the interaction between the second coating and the first coating are ensured, and the long service life of the wooden door is ensured.
Description
Technical Field
The application belongs to the technical field of wooden door preparation, and particularly relates to a wooden door surface treatment process.
Background
Wooden doors are quite common in daily life. On the one hand, wood is used as a natural organic material, has obvious biological characteristics and is easy to be invaded by bacteria, insects, marine borers and other organisms; on the other hand, with the improvement of life quality, the performance demands on the wooden door in the aspects of fire prevention, flame retardance, high temperature resistance, mildew resistance, water resistance and the like are increasing. Correspondingly, there are also increasing treatments for wood boards, in particular wood board surfaces.
Conventionally, a protection treatment is generally adopted for the surface of a wooden door, and although the treatment is simple, the method has obvious defects of poor protection performance, long drying time and the like. In other surface treatment prior art, patent document CN106246078B provides a treatment method for a high-strength fireproof wooden door, and the obtained door plate has high strength, and has fire resistance, but the fire resistance is still to be further improved, and the heat insulation and corrosion resistance are general; patent document CN110774395B provides a method for improving the waterproof and corrosion-resistant properties of a wooden door, which uses a wooden door treating agent with complex preparation method and needs to be further improved in properties other than corrosion-resistant properties; patent document CN107120039B, CN107255012B provides a method for treating a solid wood door, which uses a three-layer structure, and uses various materials with complex composition and relatively high cost for each layer structure.
In fact, the fireproof flame retardance is one of important indexes of the wooden door, and the performance of the fireproof flame retardance is determined to a large extent by the performance and quality of the door core plate. The surface treatment of the door core plate is endowed with excellent performances of flame retardance, water resistance, corrosion resistance and the like, and the method has important significance for prolonging the service life of the wood door and reducing the wood consumption so as to achieve the environmental protection.
In view of this, the present application has been proposed.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application aims to provide the surface treatment process for the wooden door, which has the advantages of simple treatment process and simple components, and the prepared wooden door has good comprehensive performances such as flame retardance, water resistance, corrosion resistance and the like.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a wooden door surface treatment process comprises the following steps: sequentially coating a first coating and a second coating on the surface of the door core;
wherein, the first coating is prepared from the following raw materials in parts by weight: 60-80 parts of maleic acid-acrylic acid copolymer, 6-15 parts of modified attapulgite, 3-10 parts of glass flakes and 0.6-1.2 parts of silane coupling agent a;
wherein, the second coating is prepared from the following raw materials in parts by weight: 20-40 parts of raw lacquer, 50-80 parts of phenolic resin, 5-12 parts of mullite powder, 2-8 parts of white oil and 0.2-1 part of silane coupling agent b.
Preferably, the thickness of the first coating layer and the second coating layer is 0.05 to 0.2mm, 0.1 to 0.25mm, respectively.
Preferably, the preparation of the first coating comprises the steps of: adding a silane coupling agent a into the maleic acid-acrylic acid copolymer, then adding the modified attapulgite and the glass flakes, and uniformly stirring.
Preferably, the preparation of the second coating comprises the steps of: mixing raw lacquer, phenolic resin and white oil, stirring uniformly, adding mullite powder and a silane coupling agent b, and stirring uniformly again.
Preferably, the silane coupling agent a and the silane coupling agent b are respectively selected from one or two of KH550 and KH 560.
Preferably, the molecular weight of the maleic acid-acrylic acid copolymer is 2150.
Preferably, the preparation of the modified attapulgite clay comprises the following steps: adding attapulgite into dilute hydrochloric acid, and stirring under heating; and (3) filtering and drying after stirring, and finally crushing to obtain the modified attapulgite.
Preferably, the concentration of the dilute hydrochloric acid is 6-12 wt%; the dosage of the attapulgite and the dilute hydrochloric acid is 1g: (6-12) mL; heating at 50-80 deg.c for 2-6 hr; pulverizing to 80-100 meshes.
Preferably, the glass flakes are C-type medium alkali glass flakes with a mesh number of 60-80 mesh.
Preferably, the phenolic resin is of the brand F51.
Compared with the prior art, the application has the following beneficial effects:
(1) According to the surface treatment process for the wooden door, provided by the application, two layers of specific substances are coated on the surface of the door core in a targeted manner, and the prepared wooden door has the advantages of good comprehensive performances such as flame retardance, corrosion resistance, heat insulation and the like, simple process and strong applicability.
(2) According to the surface treatment process for the wooden door, the first coating is coated on the inner layer of the door core, and the second coating is coated on the outer layer of the door core; specifically, the following steps are as follows: the first coating selects the maleic acid-acrylic acid copolymer as a main film forming substance, because the maleic acid-acrylic acid copolymer has rich carboxyl groups, can bond with hydroxyl contained in wood cellulose to form hydrogen bonds, and ensures the firmness of the combination of the inner coating and the door core; meanwhile, the modified attapulgite and glass flakes are also used in the first coating and are dispersed in the maleic acid-acrylic acid copolymer, so that the compactness of film formation is ensured, and the corrosion resistance of the coating film of the coating is further improved; it is particularly emphasized that the modified attapulgite can form a certain carboxyl group, a certain hydroxyl group and other groups on the surface of the modified attapulgite through simple acid treatment, and can interact with amino groups of the silane coupling agent while improving film forming strength through the action of the hydroxyl groups in wood, so that the interaction among all substances is ensured to form a three-dimensional network structure, and a certain flame retardant effect is achieved; the modified attapulgite with different meshes and glass flakes are matched for use, so that the sufficiency of dispersion and filling is ensured; the second coating uses phenolic resin as a main film forming substance, and a small amount of raw lacquer is added to assist in film forming; the phenolic resin has good high temperature resistance, the raw lacquer has excellent flame retardant property, and the use of the phenolic resin and the raw lacquer ensures the excellent high temperature resistance and flame retardant property of the outer coating; it is emphasized that the main component of the raw lacquer is urushiol, which can bond with hydroxyl in the first coating and amino in the silane coupling agent to form hydrogen bonds, so that the bonding firmness of the first coating and the second coating is ensured; the white oil used in the second coating can absorb organic matters volatilized from wood, so that the environmental pollution is reduced, and the body injury is reduced; meanwhile, the white oil also has a certain hydrophobic effect, so that the treated wooden door has a certain waterproof performance; the mullite powder used can be fully dispersed in raw lacquer and phenolic resin, so that the compactness, wear resistance and corrosion resistance of the second coating film are improved; meanwhile, the thermal expansibility of the mullite powder enables the second coating to have certain high temperature resistance.
In a word, the application ensures the interaction between the first coating and the door core, the interaction between the second coating and the first coating and the bonding strength of the coatings by optimizing substances, wherein the substances have simple components and few types; meanwhile, the second coating layer is endowed with hydrophobicity, corrosion resistance and flame retardance, so that the basic performance of the door plate is guaranteed, and the first coating layer enables the usability of the wooden door to be matched with the first coating layer even if the second coating layer is damaged, so that the long service life of the wooden door is guaranteed.
Detailed Description
Embodiments of the present application are described in detail below. It will be understood that the examples are illustrative and are intended to be illustrative of the application and are not to be construed as limiting the application.
In the application, the brand of the phenolic resin is F51.
In the application, the glass flake is C-shaped medium alkali glass flake.
In the present application, the door core may be made of a common material, including but not limited to, general wood, solid wood, etc., which is not particularly limited in the present application.
In the present application, the other points not described are conventional means (such as coating method, etc.) known to those skilled in the art; materials from which no description is given are all commercially available.
Example 1
A wooden door surface treatment process comprises the following steps: coating a first coating with the thickness of 0.1mm and a second coating with the thickness of 0.2mm on the surface of the door core in sequence;
wherein, the first coating is prepared from the following raw materials in parts by weight: 65g of maleic acid-acrylic acid copolymer, 8g of modified attapulgite, 4g of glass flakes and 0.5g of KH550; the preparation of the first coating comprises the following steps: adding KH550 into the maleic acid-acrylic copolymer, then adding modified attapulgite and glass flakes, and uniformly stirring;
wherein, the second coating is prepared from the following raw materials in parts by weight: 30g of raw lacquer, 60g of phenolic resin, 6g of mullite powder, 3g of white oil and 0.8g of KH550; the preparation of the second coating comprises the following steps: mixing raw lacquer, phenolic resin and white oil, stirring, adding mullite powder and KH550, and stirring again.
Wherein the molecular weight of the maleic acid-acrylic acid copolymer is 2150.
Wherein, the preparation of the modified attapulgite comprises the following steps: according to the dosage ratio of 1g:8mL, add attapulgite to 7wt% dilute hydrochloric acid, then stir at 60℃for 4h; and (3) filtering and drying after stirring, and finally crushing to 80 meshes to obtain the modified attapulgite.
Wherein, the glass flake is C-shaped medium alkali glass flake, and the mesh number is 60 mesh.
Wherein the brand of the phenolic resin is F51.
Example 2
A wooden door surface treatment process comprises the following steps: coating a first coating with the thickness of 0.1mm and a second coating with the thickness of 0.2mm on the surface of the door core in sequence;
wherein, the first coating is prepared from the following raw materials in parts by weight: 70g of maleic acid-acrylic acid copolymer, 9g of modified attapulgite, 4g of glass flakes and 0.6g of KH550; the preparation of the first coating comprises the following steps: adding KH550 into the maleic acid-acrylic copolymer, then adding modified attapulgite and glass flakes, and uniformly stirring;
wherein, the second coating is prepared from the following raw materials in parts by weight: 30g of raw lacquer, 65g of phenolic resin, 7g of mullite powder, 2.5g of white oil and 0.9g of KH550; the preparation of the second coating comprises the following steps: mixing raw lacquer, phenolic resin and white oil, stirring, adding mullite powder and KH550, and stirring again.
Wherein the molecular weight of the maleic acid-acrylic acid copolymer is 2150.
Wherein, the preparation of the modified attapulgite comprises the following steps: according to the dosage ratio of 1g:9mL of attapulgite was added to 8wt% dilute hydrochloric acid, followed by stirring at 60℃for 4h; and (3) filtering and drying after stirring, and finally crushing to 80 meshes to obtain the modified attapulgite.
Wherein, the glass flake is C-shaped medium alkali glass flake, and the mesh number is 60 mesh.
Wherein the brand of the phenolic resin is F51.
Example 3
A wooden door surface treatment process comprises the following steps: coating a first coating with the thickness of 0.1mm and a second coating with the thickness of 0.2mm on the surface of the door core in sequence;
wherein, the first coating is prepared from the following raw materials in parts by weight: 75g of maleic acid-acrylic acid copolymer, 9g of modified attapulgite, 3.5g of glass flakes and 0.6g of KH550; the preparation of the first coating comprises the following steps: adding KH550 into the maleic acid-acrylic copolymer, then adding modified attapulgite and glass flakes, and uniformly stirring;
wherein, the second coating is prepared from the following raw materials in parts by weight: 35g of raw lacquer, 65g of phenolic resin, 8g of mullite powder, 3g of white oil and 0.9g of KH550; the preparation of the second coating comprises the following steps: mixing raw lacquer, phenolic resin and white oil, stirring, adding mullite powder and KH550, and stirring again.
Wherein the molecular weight of the maleic acid-acrylic acid copolymer is 2150.
Wherein, the preparation of the modified attapulgite comprises the following steps: according to the dosage ratio of 1g:9mL of attapulgite was added to 8wt% dilute hydrochloric acid, followed by stirring at 65℃for 4h; and (3) filtering and drying after stirring, and finally crushing to 80 meshes to obtain the modified attapulgite.
Wherein, the glass flake is C-shaped medium alkali glass flake, and the mesh number is 60 mesh.
Wherein the brand of the phenolic resin is F51.
Comparative example 1
The wooden door surface treatment process is different from example 1 in that only the first coating layer is coated on the surface of the door core, and the other parameters and treatment methods are the same.
Comparative example 2
The wooden door surface treatment process is different from example 1 in that only the second coating layer is coated on the surface of the door core, and the other parameters and treatment methods are the same.
The wooden doors treated in examples 1 to 3 and comparative examples 1 to 2 were classified according to the flame retardant rating of GB8624-2012 and tested according to GB/T5424-2010; fire resistance integrity test according to GB/T7633-2008. The test results are shown in Table 1.
Table 1 test results
| Flame retardant rating | Fire resistance integrity/min | |
| Example 1 | Class A | 113 |
| Example 2 | Class A | 108 |
| Example 3 | Class A | 116 |
| Comparative example 1 | B1 stage | 48 |
| Comparative example 2 | Class A | 92 |
As can be seen from Table 1, the wooden doors prepared in each example of the present application have good fire resistance and flame retardance.
Meanwhile, the first coating and the second coating prepared in the embodiment 1 are sequentially coated on the same tin plate, and performance test of the coatings is performed. Meanwhile, the first coating layer and the second coating layer were coated on a tin plate test panel as comparative example 3 and comparative example 4, respectively, and performance tests of the coating layers were performed. The adhesive force is tested by a 2mm cross-cut method; water resistance is described in GB/T1733-1993; salt spray resistance is referred to GB/T1771-2007. The test results are shown in Table 2.
Table 2 summary of material test results
As can be seen from Table 2, the coating obtained in example 1 of the present application was excellent in corrosion resistance, water resistance and adhesion.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The wooden door surface treatment process is characterized by comprising the following steps of: sequentially coating a first coating and a second coating on the surface of the door core;
wherein, the first coating is prepared from the following raw materials in parts by weight: 60-80 parts of maleic acid-acrylic acid copolymer, 6-15 parts of modified attapulgite, 3-10 parts of glass flakes and 0.2-0.8 part of silane coupling agent a;
wherein, the second coating is prepared from the following raw materials in parts by weight: 20-40 parts of raw lacquer, 50-80 parts of phenolic resin, 5-12 parts of mullite powder, 2-8 parts of white oil and 0.6-1.2 parts of silane coupling agent b;
wherein the silane coupling agent a and the silane coupling agent b are respectively selected from one or two of KH550 and KH 560;
wherein, the preparation of the modified attapulgite comprises the following steps: adding attapulgite into dilute hydrochloric acid, and stirring under heating; filtering and drying after stirring, and finally crushing to obtain modified attapulgite;
wherein the concentration of the dilute hydrochloric acid is 6-12wt%; the dosage of the attapulgite and the dilute hydrochloric acid is 1g: (6-12) mL; heating at 50-80 ℃ and stirring for 2-6 hours; crushing to 80-100 meshes;
wherein the glass flakes are C-shaped medium alkali glass flakes with the mesh number of 60-80 meshes.
2. The wooden door surface treatment process according to claim 1, wherein the thickness of the first coating layer and the second coating layer is 0.05-0.2 mm and 0.1-0.25 mm respectively.
3. A wooden door surface treatment process according to claim 1, wherein the preparation of the first coating comprises the steps of: adding a silane coupling agent a into the maleic acid-acrylic acid copolymer, then adding the modified attapulgite and the glass flakes, and uniformly stirring.
4. A wooden door surface treatment process according to claim 1, wherein the preparation of the second coating comprises the steps of: mixing raw lacquer, phenolic resin and white oil, stirring uniformly, adding mullite powder and a silane coupling agent b, and stirring uniformly again.
5. A wooden door surface treatment process according to claim 1, wherein the maleic acid-acrylic acid copolymer has a molecular weight of 2150.
6. A wooden door surface treatment process according to claim 1, wherein the phenolic resin is F51.
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