CN109249657B - White board and manufacturing process thereof - Google Patents

White board and manufacturing process thereof Download PDF

Info

Publication number
CN109249657B
CN109249657B CN201810863412.6A CN201810863412A CN109249657B CN 109249657 B CN109249657 B CN 109249657B CN 201810863412 A CN201810863412 A CN 201810863412A CN 109249657 B CN109249657 B CN 109249657B
Authority
CN
China
Prior art keywords
parts
weight ratio
prepared
agent
epoxy resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810863412.6A
Other languages
Chinese (zh)
Other versions
CN109249657A (en
Inventor
赵文发
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Aoxing Audio Visual Equipment Co ltd
Original Assignee
Dongguan Aoxing Audio Visual Equipment Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongguan Aoxing Audio Visual Equipment Co ltd filed Critical Dongguan Aoxing Audio Visual Equipment Co ltd
Priority to CN201810863412.6A priority Critical patent/CN109249657B/en
Publication of CN109249657A publication Critical patent/CN109249657A/en
Application granted granted Critical
Publication of CN109249657B publication Critical patent/CN109249657B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/002—Repeatedly-usable boards or tablets for writing or drawing chemical details
    • 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
    • C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • 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
    • C09D7/63—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
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • 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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/06—Polyurethanes from polyesters
    • 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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention relates to the technical field of office cultural and educational supplies, in particular to a white board and a manufacturing process thereof, wherein the manufacturing process comprises the following steps: (1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet; (2) pressing the wood board and the iron sheet for 2-4d under the pressure of 5-15 kilograms force to obtain a bonding board; (3) and (3) sealing the adhesive plate by using hot melt adhesive, fixing the adhesive plate by using a frame, and coating a layer of easily erasable coating on the outer surface of the iron sheet to obtain the whiteboard. The white board manufactured by the invention has the advantages of simple structure, easy inking, good repeated writing and wiping functions, no color sticking, no decolorization, no dust retention, no trace, good scratch resistance and environmental protection.

Description

White board and manufacturing process thereof
Technical Field
The invention relates to the technical field of office cultural and educational supplies, in particular to a white board and a manufacturing process thereof.
Background
A whiteboard is a kind of office stationery and teaching appliance, and is generally a writing surface made of white metal plate material. The whiteboard has a similar function to a blackboard and is a writing tool capable of being repeatedly erased and written. Typically for teaching, conference discussion, or personal and home recording. Because the white board has wide functions and is not easy to generate dust compared with the traditional blackboard, the products are widely loved by people. For the above reasons, the whiteboard has a large market space.
However, the existing whiteboard has a complex manufacturing process and increased production cost, and the existing whiteboard can leave marks after being erased by a whiteboard pen or lose the effect after a little time.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the manufacturing process of the whiteboard, which has the advantages of simple steps, convenient operation and control, stable quality, high production efficiency and low production cost.
The invention aims to provide a whiteboard, which has a simple structure, is easy to ink, has good repeated writing and wiping functions, is not sticky, decolorable, dustless, traceless, good in scratch resistance and environment-friendly.
The purpose of the invention is realized by the following technical scheme: a manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 2-4d under the pressure of 5-15 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 30-50 parts of water-based acrylic resin, 5-15 parts of water-based amino resin, 5-15 parts of alkyd resin, 10-20 parts of titanium dioxide, 1-2 parts of para-toluene sulfonic acid amine, 0.5-1.5 parts of film-forming assistant, 0.5-1.5 parts of flatting agent, 0.5-1.5 parts of wetting agent, 0.5-1.5 parts of defoaming agent and 20-40 parts of deionized water.
The easy-to-erase coating disclosed by the invention adopts the raw materials, and the weight ratio of the raw materials is strictly controlled, so that the adhesion force of the prepared easy-to-erase coating to a metal substrate can reach the first level, the easy-to-erase coating has lower surface tension, is easy to ink, has good repeated writing and erasing functions, is not sticky, decolored, dustless, traceless, good in scratch resistance and environment-friendly.
Preferably, the film forming aid is prepared by mixing polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 0.8-1.2: 1.5-2.5. The invention strictly controls the type, compounding and proportion of the film forming additive, has good film forming effect, compatibility and excellent substrate adhesiveness, and has little influence on paper substrates.
The leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 0.8-1.2: 1.4-2.2. The invention can effectively reduce the surface tension of the coating, improve the leveling property and uniformity, improve the permeability of the coating, reduce the possibility of generating spots and stains during brushing and increase the coverage property by strictly controlling the type, the compounding and the proportion of the leveling agent, so that the coating is uniform and natural in film forming, and a flat, smooth and uniform coating film is formed in the drying and film forming process of the coating.
Preferably, the defoaming agent is polyoxyethylene nonylphenol ether, sodium carboxymethylcellulose and silicon-containing polyether in a weight ratio of 1.5-2.5: 0.8-1.2: 1, in a mixture of the components. The defoaming agent has the characteristics of high defoaming speed, long foam inhibition time, good effect, good diffusivity and permeability, good thermal stability and the like by strictly controlling the type, compounding and proportion of the defoaming agent.
The wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of (2-4): 0.5-1.5: 1, in a mixture of the components. The invention strictly controls the kind, compounding and proportion of the wetting agent, and reduces the surface tension or interfacial tension of the coating, so that water can spread on the surface of the solid material or penetrate into the surface of the solid material to wet the material.
Preferably, in the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B according to a weight ratio of 1.5-2.5: 1, the component A consists of 40-80 parts of phenolic resin, 10-20 parts of diluent and 1-5 parts of coupling agent, and the component B consists of 80-100 parts of curing agent, 15-25 parts of modifier, 20-40 parts of filler and 0.5-1.5 parts of ultraviolet resistant agent.
By adopting the raw materials and strictly controlling the weight ratio of the raw materials, the prepared epoxy resin glue can be cured at low temperature or normal temperature, and the curing speed is high; after curing, the adhesive has high bonding strength, good hardness and certain toughness; the condensate has good acid and alkali resistance, good moisture, water, oil and dust resistance, and moisture, heat and atmospheric aging resistance; has good electrical and physical properties such as insulation, compression resistance, high bonding strength and the like, and can be used for bonding metal and wood.
Preferably, the epoxy resin is a hydrogenated bisphenol a epoxy resin, a polyurethane-modified epoxy resin, a phenol-aldehyde modified epoxy resin and an alicyclic epoxy resin in a weight ratio of 1.5-2.5: 1: 0.8-1.2: 0.4-0.8. The epoxy resin glue can be cured at low temperature or normal temperature and has high curing speed by strictly controlling the type, compounding and proportion of the epoxy resin; after curing, the adhesive has high bonding strength, better hardness and certain toughness.
The diluent is prepared from trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 20-40: 1-5: 10-20. The invention has good diluting effect by strictly controlling the type, compounding and proportion of the diluent, can reduce the viscosity of the epoxy resin and improve the performance of the epoxy resin glue.
The coupling agent is a mixture of 3-aminopropyltrimethoxysilane, vinyl tri (β -methoxyethoxy) silane and gamma-methacryloxypropyltrimethoxysilane in a weight ratio of 2-4: 1.5-2.5: 1.
Preferably, the curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine in a weight ratio of 2-4: 1.5-2.5: 1, in a mixture of the components. The epoxy resin glue prepared by strictly controlling the type, compounding and proportion of the curing agent can be cured at low temperature or normal temperature, and the curing speed is high.
The modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 1.5-2.5: 0.8-1.2: 1, in a mixture of the components. According to the invention, the strength of the glue can be improved by adopting the polypropylene glycol glycidyl ether, the impact-resistant tanning property of the glue can be improved by adopting the polyvinyl butyral, and the brittleness and the bonding capability can be improved by adopting the polyamide resin.
The filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.4-0.8: 0.8-1.2. The invention can improve the strength and toughness of the glue by strictly controlling the type, compounding and proportion of the filler, improve the heat dissipation condition during resin curing, reduce the consumption of epoxy resin and reduce the cost.
The anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 0.5-1.5: 1.4-2.2: 1, in a mixture of the components. The ultraviolet absorbent can strongly absorb ultraviolet rays by strictly controlling the type, compounding and weight ratio of the ultraviolet absorbent, and has excellent synergistic effect.
Preferably, in the step (3), the hot melt adhesive is a polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 40-80 parts of macromolecular polyol, 20-40 parts of polyisocyanate, 1-5 parts of a chain extender and 1-3 parts of an auxiliary agent.
By adopting the raw materials and strictly controlling the weight ratio of the raw materials, the prepared polyurethane hot melt adhesive has the characteristics of high bonding strength, solvent resistance, wear resistance and the like, and also has excellent elasticity and strength, high use reliability, good chemical and physical uniformity, simple and convenient bonding process, less waste and no mixing problem, so that the adhesive can achieve the optimal physical performance.
Preferably, the macromolecular polyol is prepared by mixing a polyester polyol with the number average molecular weight of 1000-3000 and a polyether polyol with the number average molecular weight of 2000-4000 in a weight ratio of 0.5-1.5: 1, in a mixture of the components. The invention adopts the polyester polyol with the number average molecular weight of 1000-3000 and the polyether polyol with the number average molecular weight of 2000-4000 as the macromolecular polyol for compounding use, and the weight ratio is controlled to be 0.5-1.5: 1, the prepared polyurethane hot melt adhesive has good flexibility and wear resistance, and good water resistance, corrosion resistance and weather resistance.
The polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 4-8: 2-4: 1. the invention adopts diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate as polyisocyanates, and controls the weight ratio of the polyisocyanates to be 4-8: 2-4: 1, the prepared polyurethane hot melt adhesive has good flexibility and wear resistance, and good water resistance, corrosion resistance and weather resistance.
Preferably, the chain extender is prepared by mixing 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 0.8-1.2: 1.4-2.2: 2.4-3.2. The invention adopts 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol as chain extenders, and the weight ratio of the chain extenders is controlled to be 1: 0.8-1.2: 1.4-2.2: 2.4-3.2, the chain extension effect is good, the chain extension effect can be reacted with functional groups on a linear polymer chain to expand the molecular chain and increase the molecular weight, and the prepared polyurethane hot melt adhesive has good flexibility and wear resistance, and good water resistance, corrosion resistance and weather resistance.
The auxiliary agent is a mixture consisting of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and an ethylene-vinyl acetate copolymer in a weight ratio of 1-2: 0.5-1.5: 1, the aging of the material can be prevented and the service life of the polyurethane hot melt adhesive can be prolonged by adopting β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, the ultraviolet rays can be absorbed by adopting the 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, the weather resistance of the polyurethane hot melt adhesive is improved, and the hardness of the polyurethane hot melt adhesive can be improved by adopting the ethylene-vinyl acetate copolymer.
A whiteboard is manufactured according to the manufacturing process.
The invention has the beneficial effects that: the manufacturing process of the invention has the advantages of simple steps, convenient operation and control, stable quality, high production efficiency and low production cost.
The white board has the advantages of simple structure, easy inking, good repeated writing and wiping functions, no color sticking, no decolorization, no dust retention, no trace, good scratch resistance and environmental protection.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 4d under the pressure of 5 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 30 parts of water-based acrylic resin, 5 parts of water-based amino resin, 5 parts of alkyd resin, 10 parts of titanium dioxide, 1 part of paratoluenesulfonic acid amine, 0.5 part of film-forming assistant, 0.5 part of flatting agent, 0.5 part of wetting agent, 0.5 part of defoaming agent and 20 parts of deionized water.
The film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 0.8: 1.5 of a mixture; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 0.8: 1.4 of the composition.
The defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether according to the weight ratio of 1.5: 0.8: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalene formaldehyde sulfonate in a weight ratio of 2: 0.5: 1, in a mixture of the components.
In the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B according to a weight ratio of 1.5: 1, the component A consists of 40 parts of phenolic resin, 10 parts of diluent and 1 part of coupling agent, and the component B consists of 80 parts of curing agent, 15 parts of modifier, 20 parts of filler and 0.5 part of ultraviolet resistant agent.
The epoxy resin is a mixture composed of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenolic aldehyde modified epoxy resin and alicyclic epoxy resin in a weight ratio of 1.5: 1: 0.8: 0.4, the diluent is a mixture composed of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 20: 1: 10, and the coupling agent is a mixture composed of 3-aminopropyltrimethoxysilane, vinyl tris (β -methoxyethoxy) silane and gamma-methacryloxypropyl trimethoxysilane in a weight ratio of 2: 1.5: 1.
The curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine according to a weight ratio of 2: 1.5: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 1.5: 0.8: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.4: 0.8 of the composition of the mixture; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 0.5: 1.4: 1, in a mixture of the components.
In the step (3), the hot melt adhesive is a polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 40 parts of macromolecular polyol, 20 parts of polyisocyanate, 1 part of chain extender and 1 part of auxiliary agent.
The macromolecular polyol is prepared from polyester polyol with the number average molecular weight of 1000 and polyether polyol with the number average molecular weight of 2000 in a weight ratio of 0.5: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 4: 2: 1.
the chain extender is a mixture consisting of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 0.8: 1.4: 2.4, and the auxiliary agent is a mixture consisting of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and an ethylene-vinyl acetate copolymer in a weight ratio of 1: 0.5: 1.
A whiteboard is manufactured according to the manufacturing process.
Example 2
A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 3.5 days under the pressure of 8 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 35 parts of water-based acrylic resin, 8 parts of water-based amino resin, 8 parts of alkyd resin, 12 parts of titanium dioxide, 1.2 parts of paratoluenesulfonic acid amine, 0.8 part of film-forming additive, 0.8 part of flatting agent, 0.8 part of wetting agent, 0.8 part of defoaming agent and 25 parts of deionized water.
The film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 0.9: 1.8 of a mixture; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 0.9: 1.6.
The defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether according to the weight ratio of 1.8: 0.9: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of 2.5: 0.8: 1, in a mixture of the components.
In the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B according to a weight ratio of 1.8: 1, the component A consists of 50 parts of phenolic resin, 12 parts of diluent and 2 parts of coupling agent, and the component B consists of 85 parts of curing agent, 18 parts of modifier, 25 parts of filler and 0.8 part of ultraviolet resistant agent.
The epoxy resin is a mixture of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenolic aldehyde modified epoxy resin and alicyclic epoxy resin in a weight ratio of 1.8: 1: 0.9: 0.5, the diluent is a mixture of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 25: 2: 12, and the coupling agent is a mixture of 3-aminopropyltrimethoxysilane, vinyl tris (β -methoxyethoxy) silane and gamma-methacryloxypropyl trimethoxysilane in a weight ratio of 2.5: 1.8: 1.
The curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine according to the weight ratio of 2.5: 1.8: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 1.8: 0.9: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.5: 0.9 of the composition of the mixture; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 0.8: 1.6: 1, in a mixture of the components.
In the step (3), the hot melt adhesive is a polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 50 parts of macromolecular polyol, 25 parts of polyisocyanate, 2 parts of chain extender and 1.5 parts of auxiliary agent.
The macromolecular polyol is prepared from polyester polyol with the number average molecular weight of 1500 and polyether polyol with the number average molecular weight of 2500 in a weight ratio of 0.8: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 5: 2.5: 1.
the chain extender is a mixture consisting of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 0.9: 1.6: 2.6, and the auxiliary agent is a mixture consisting of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and an ethylene-vinyl acetate copolymer in a weight ratio of 1.2: 0.8: 1.
A whiteboard is manufactured according to the manufacturing process.
Example 3
A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 3d under the pressure of 10 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 40 parts of water-based acrylic resin, 10 parts of water-based amino resin, 10 parts of alkyd resin, 15 parts of titanium dioxide, 1.5 parts of paratoluenesulfonic acid amine, 1 part of film-forming assistant, 1 part of flatting agent, 1 part of wetting agent, 1 part of defoaming agent and 30 parts of deionized water.
The film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 1: 2; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 1: 1.8 of the composition.
The defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether in a weight ratio of 2: 1: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of 3: 1: 1, in a mixture of the components.
In the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B in a weight ratio of 2: 1, the component A consists of 60 parts of phenolic resin, 15 parts of diluent and 3 parts of coupling agent, and the component B consists of 90 parts of curing agent, 20 parts of modifier, 30 parts of filler and 1 part of anti-ultraviolet agent.
The epoxy resin is a mixture composed of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenolic aldehyde modified epoxy resin and alicyclic epoxy resin in a weight ratio of 2: 1: 1: 0.6, the diluent is a mixture composed of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 30: 3: 15, and the coupling agent is a mixture composed of 3-aminopropyltrimethoxysilane, vinyl tris (β -methoxyethoxy) silane and gamma-methacryloxypropyl trimethoxysilane in a weight ratio of 3: 2: 1.
The curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine according to a weight ratio of 3: 2: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 2: 1: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.6: 1; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 1: 1.8: 1, in a mixture of the components.
In the step (3), the hot melt adhesive is polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 60 parts of macromolecular polyol, 30 parts of polyisocyanate, 3 parts of chain extender and 2 parts of auxiliary agent.
The macromolecular polyol is prepared by mixing polyester polyol with the number average molecular weight of 2000 and polyether polyol with the number average molecular weight of 3000 according to the weight ratio of 1: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 6: 3: 1.
the chain extender is a mixture of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 1: 1.8: 2.8, and the auxiliary agent is a mixture of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and ethylene-vinyl acetate copolymer in a weight ratio of 1.5: 1: 1.
A whiteboard is manufactured according to the manufacturing process.
Example 4
A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 2.5 days under the pressure of 12 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 45 parts of water-based acrylic resin, 12 parts of water-based amino resin, 12 parts of alkyd resin, 18 parts of titanium dioxide, 1.8 parts of paratoluenesulfonic acid amine, 1.2 parts of film-forming additive, 1.2 parts of flatting agent, 1.2 parts of wetting agent, 1.2 parts of defoaming agent and 35 parts of deionized water.
The film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 1.1: 2.2 of the composition; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 1.1: 2, and (b) a mixture of the components.
The defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether according to the weight ratio of 2.2: 1.1: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of 3.5: 1.2: 1, in a mixture of the components.
In the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B according to a weight ratio of 2.2: 1, the component A consists of 70 parts of phenolic resin, 18 parts of diluent and 4 parts of coupling agent, and the component B consists of 95 parts of curing agent, 22 parts of modifier, 35 parts of filler and 1.2 parts of ultraviolet resistant agent.
The epoxy resin is a mixture of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenolic aldehyde modified epoxy resin and alicyclic epoxy resin in a weight ratio of 2.2: 1: 1.1: 0.7, the diluent is a mixture of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 35: 4: 18, and the coupling agent is a mixture of 3-aminopropyltrimethoxysilane, vinyl tris (β -methoxyethoxy) silane and gamma-methacryloxypropyl trimethoxysilane in a weight ratio of 3.5: 2.2: 1.
The curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine according to a weight ratio of 3.5: 2.2: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 2.2: 1.1: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.7: 1.1 of a mixture; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 1.2: 2: 1, in a mixture of the components.
In the step (3), the hot melt adhesive is polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 70 parts of macromolecular polyol, 35 parts of polyisocyanate, 4 parts of chain extender and 2.5 parts of auxiliary agent.
The macromolecular polyol is prepared from polyester polyol with the number average molecular weight of 2500 and polyether polyol with the number average molecular weight of 3500 in a weight ratio of 1.2: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 7: 3.5: 1.
the chain extender is a mixture consisting of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 1.1: 2: 3, and the auxiliary agent is a mixture consisting of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and ethylene-vinyl acetate copolymer in a weight ratio of 1.8: 1.2: 1.
A whiteboard is manufactured according to the manufacturing process.
Example 5
A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 2d under the pressure of 15 kgf to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 50 parts of water-based acrylic resin, 15 parts of water-based amino resin, 15 parts of alkyd resin, 20 parts of titanium dioxide, 2 parts of p-toluene sulfonic acid amine, 1.5 parts of film-forming assistant, 1.5 parts of flatting agent, 1.5 parts of wetting agent, 1.5 parts of defoaming agent and 20-40 parts of deionized water.
The film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 1.2: 2.5 of a mixture; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 1.2: 2.2 of the composition.
The defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether according to the weight ratio of 2.5: 1.2: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of 4: 1.5: 1, in a mixture of the components.
In the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B in a weight ratio of 2.5: 1, the component A consists of 80 parts of phenolic resin, 20 parts of diluent and 5 parts of coupling agent, and the component B consists of 100 parts of curing agent, 25 parts of modifier, 40 parts of filler and 1.5 parts of ultraviolet resistant agent.
The epoxy resin is a mixture of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenolic aldehyde modified epoxy resin and alicyclic epoxy resin in a weight ratio of 2.5: 1: 1.2: 0.8, the diluent is a mixture of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 40: 5: 20, and the coupling agent is a mixture of 3-aminopropyltrimethoxysilane, vinyl tris (β -methoxyethoxy) silane and gamma-methacryloxypropyl trimethoxysilane in a weight ratio of 4: 2.5: 1.
The curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine in a weight ratio of 4: 2.5: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 2.5: 1.2: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.8: 1.2 of a mixture; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 1.5: 2.2: 1, in a mixture of the components.
In the step (3), the hot melt adhesive is a polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 80 parts of macromolecular polyol, 40 parts of polyisocyanate, 5 parts of chain extender and 3 parts of auxiliary agent.
The macromolecular polyol is prepared by mixing polyester polyol with the number average molecular weight of 3000 and polyether polyol with the number average molecular weight of 4000 in a weight ratio of 1.5: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 8: 4: 1.
the chain extender is a mixture consisting of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 1.2: 2.2: 3.2, and the auxiliary agent is a mixture consisting of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and an ethylene-vinyl acetate copolymer in a weight ratio of 2: 1.5: 1.
A whiteboard is manufactured according to the manufacturing process.
Tests show that after the whiteboard marker manufactured in the embodiment 1-5 is used for writing for 48 hours, the whiteboard marker is repeatedly erased by using cotton cloth for 10 times without traces, can be erased to be basically invisible after being written and erased for 4000 times at the same position, has good repeated writing and erasing functions, is not sticky, decolorized or dusty, has no damage after being repeatedly rubbed by using No. 2400 abrasive paper for 20 times, has the glossiness of more than 99 percent, has the pencil hardness of 5H, has good scratch resistance and is environment-friendly.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.

Claims (8)

1. A manufacturing process of a white board is characterized by comprising the following steps: the method comprises the following steps:
(1) taking a wood board, coating a layer of glue on one surface of the wood board, and then adhering an iron sheet;
(2) pressing the wood board and the iron sheet for 2-4d under the pressure of 5-15 kilograms force to obtain a bonding board;
(3) sealing the bonding plate with hot melt adhesive, and fixing with a frame to obtain a white board;
in the step (3), the outer surface of the iron sheet is coated with a layer of easily erasable coating, and the easily erasable coating is prepared from the following raw materials in parts by weight: 30-50 parts of water-based acrylic resin, 5-15 parts of water-based amino resin, 5-15 parts of alkyd resin, 10-20 parts of titanium dioxide, 1-2 parts of paratoluenesulfonic acid amine, 0.5-1.5 parts of film-forming assistant, 0.5-1.5 parts of flatting agent, 0.5-1.5 parts of wetting agent, 0.5-1.5 parts of defoaming agent and 20-40 parts of deionized water;
the film-forming assistant is prepared from polyvinyl alcohol, dodecyl alcohol ester and diethylene glycol butyl ether in a weight ratio of 1: 0.8-1.2: 1.5-2.5; the leveling agent is prepared from polydimethylsiloxane, polyether polyester modified organic siloxane and alkyl modified organic siloxane in a weight ratio of 1: 0.8-1.2: 1.4-2.2;
the defoaming agent is composed of nonylphenol polyoxyethylene ether, sodium carboxymethylcellulose and silicon-containing polyether according to the weight ratio of 1.5-2.5: 0.8-1.2: 1; the wetting agent is prepared from fatty alcohol-polyoxyethylene ether, sodium dodecyl sulfate and sodium polynaphthalenesulfonate in a weight ratio of (2-4): 0.5-1.5: 1, in a mixture of the components.
2. The process for manufacturing a whiteboard according to claim 1, wherein: in the step (1), the glue is a two-component epoxy resin glue, and the epoxy resin glue is prepared from a component A and a component B according to a weight ratio of 1.5-2.5: 1, the component A consists of 40-80 parts of phenolic resin, 10-20 parts of diluent and 1-5 parts of coupling agent, and the component B consists of 80-100 parts of curing agent, 15-25 parts of modifier, 20-40 parts of filler and 0.5-1.5 parts of ultraviolet resistant agent.
3. The process for manufacturing the whiteboard as claimed in claim 2, wherein the epoxy resin is a mixture of hydrogenated bisphenol A epoxy resin, polyurethane modified epoxy resin, phenol-modified epoxy resin and cycloaliphatic epoxy resin in a weight ratio of 1.5-2.5: 1: 0.8-1.2: 0.4-0.8, the diluent is a mixture of trimethylolpropane triglycidyl ether, butyl glycidyl ether and 1.4-butanediol in a volume ratio of 20-40: 1-5: 10-20, and the coupling agent is a mixture of 3-aminopropyltrimethoxysilane, vinyltris (β -methoxyethoxy) silane and gamma-methacryloxypropyltrimethoxysilane in a weight ratio of 2-4: 1.5-2.5: 1.
4. A process for manufacturing a whiteboard according to claim 2, wherein: the curing agent is prepared from diethylenetriamine, isophorone diamine and modified alicyclic amine according to the weight ratio of 2-4: 1.5-2.5: 1; the modifier is prepared from polypropylene glycol glycidyl ether, polyvinyl butyral and polyamide resin in a weight ratio of 1.5-2.5: 0.8-1.2: 1; the filler is prepared from silicon micropowder, kaolin and calcium carbonate in a weight ratio of 1: 0.4-0.8: 0.8-1.2; the anti-ultraviolet agent is prepared from 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2-hydroxy-4-methoxybenzophenone and hexamethylphosphoric triamide according to the weight ratio of 0.5-1.5: 1.4-2.2: 1, in a mixture of the components.
5. The process for manufacturing a whiteboard according to claim 1, wherein: in the step (3), the hot melt adhesive is polyurethane hot melt adhesive, and the polyurethane hot melt adhesive is prepared from 40-80 parts of macromolecular polyol, 20-40 parts of polyisocyanate, 1-5 parts of chain extender and 1-3 parts of auxiliary agent.
6. The process for manufacturing a whiteboard according to claim 5, wherein: the macromolecular polyol is prepared from polyester polyol with the number average molecular weight of 1000-3000 and polyether polyol with the number average molecular weight of 2000-4000 in a weight ratio of 0.5-1.5: 1; the polyisocyanate is prepared from diphenylmethane diisocyanate, xylylene diisocyanate and methylcyclohexyl diisocyanate in a weight ratio of 4-8: 2-4: 1.
7. the process for manufacturing the whiteboard as claimed in claim 5, wherein the chain extender is a mixture of 1, 3-butanediol, 2-methyl-1, 3-propanediol, 3-methyl-1, 5-pentanediol and 1, 4-cyclohexanedimethanol in a weight ratio of 1: 0.8-1.2: 1.4-2.2: 2.4-3.2, and the auxiliary agent is a mixture of β - (3, 5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole and ethylene-vinyl acetate copolymer in a weight ratio of 1-2: 0.5-1.5: 1.
8. A whiteboard, characterized in that: the whiteboard made according to the process of any of claims 1 to 7.
CN201810863412.6A 2018-08-01 2018-08-01 White board and manufacturing process thereof Active CN109249657B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810863412.6A CN109249657B (en) 2018-08-01 2018-08-01 White board and manufacturing process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810863412.6A CN109249657B (en) 2018-08-01 2018-08-01 White board and manufacturing process thereof

Publications (2)

Publication Number Publication Date
CN109249657A CN109249657A (en) 2019-01-22
CN109249657B true CN109249657B (en) 2020-08-07

Family

ID=65050127

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810863412.6A Active CN109249657B (en) 2018-08-01 2018-08-01 White board and manufacturing process thereof

Country Status (1)

Country Link
CN (1) CN109249657B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111205016A (en) * 2020-01-13 2020-05-29 横店集团东磁股份有限公司 Flexible soft iron writing white board and preparation method thereof
CN111154131A (en) * 2020-03-03 2020-05-15 江西科为薄膜新型材料有限公司 Eye-protecting white board film

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2064304U (en) * 1990-03-23 1990-10-24 王以森 Combined blackboard being able to suspend magnetic hanging chart
CN106349875B (en) * 2016-08-29 2018-08-24 江南载福粉末涂料（张家港）有限公司 A kind of blank powdery paints and preparation method thereof
CN106700780A (en) * 2016-12-23 2017-05-24 珠海市立州涂料有限公司 Scratch-resistant erasable whiteboard water-based paint and preparation method thereof
CN106700881A (en) * 2016-12-31 2017-05-24 佛山市顺德区巴德富实业有限公司 Waterborne matte white board paint and preparation method thereof

Also Published As

Publication number Publication date
CN109249657A (en) 2019-01-22

Similar Documents

Publication Publication Date Title
CN101405315B (en) Moisture-curing compositions containing silane-functional polymers with good adhesive properties
RU2420554C2 (en) Single-component anhydrous coating composition for sealing building structures and flat roofs
CN105199514A (en) Fluorocarbon elastic waterproof paint for metal color steel roofing and preparation method thereof
CN109249657B (en) White board and manufacturing process thereof
CN102459431B (en) Multilayer surface coating with barrier layer
CN104962219A (en) Water-based zero-formaldehyde adhesive for plywoods
US20200071512A1 (en) Water-based composition having improved mechanical properties
JP2012092311A (en) Primer coating agent and laminate
KR100969944B1 (en) The watersoluble multicuring primer compositions, waterproof coat and floor coat thereof on concreate materials
KR101575125B1 (en) Watersoluble hybrid coating composition with high performance
KR20120014426A (en) Preparing method of 1 component type waterborne epoxy resin
CN112080247B (en) Water-based silicone adhesive capable of bonding RTV silicone adhesive
JP4674815B2 (en) Repair method of old paint film
CN101921539B (en) Composition for coating plate and application thereof on plate
CN114763437B (en) Preparation method and application of modified hydroxypropyl silicone oil
KR102261647B1 (en) Painting Method of Waterproof Flooring Construction Without Requiring Removal of Old Film
JP4641563B1 (en) Antifouling paint composition and method for forming antifouling coating film
KR20100088033A (en) Adhesive composition for laminating and laminating method using it
CN112430440A (en) Acrylic anti-static plate
JP2012126819A (en) Urethane resin composition, coating agent, coating agent for plastic substrate, and cured product obtained using these, and cured products obtained by using these, and methods for manufacturing the cured products
KR100575040B1 (en) Two-component type water-soluble adhesive composition for korean under-floor heating floor
KR20190006940A (en) Antifouling coating composition
CN117645830A (en) Ink-absorbing coating, facing film, and preparation methods and applications thereof
KR102572255B1 (en) Coating composition for concrete and coating method using the same
CN108893043A (en) A kind of aqueous woodware paint repairs coloured light oil and its preparation method and application

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant