CN109535967A - A kind of preparation method of environment-friendly type high impact resistance coating - Google Patents
A kind of preparation method of environment-friendly type high impact resistance coating Download PDFInfo
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/20—Esters of polyhydric alcohols or phenols, e.g. 2-hydroxyethyl (meth)acrylate or glycerol mono-(meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
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- 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
- C09D7/47—Levelling agents
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- 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
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- 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
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- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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Abstract
The invention discloses a kind of preparation methods of coating；The components by weight percent of the coating is as follows: functional resin 40-50, dispersing agent 0.5-2, levelling agent 0.5-1, pigment 20-30, solvent 15-20.It is mixed pick pearl is added in the coating prepared on dispersion machine two hours.Then, the curing agent for 20-30wt% being added in coating is filtered with copper mesh after mixing evenly.The coating made is sprayed on 800 with spray gun#On the aluminium sheet that sand paper was polished, surface drying time is recorded, then paint plate is placed on 25 DEG C of thermostatic drying chambers 24 hours, take out paint plate, analyze the performance of its paint film.The functional resin: solid content 70%, absolute weight average molecular are greater than 17000g/mol, the branching styrene-acrylic resin of Zimm branching factor g ' < 0.8；The dispersing agent is that organic nonionic surface active agent and anionic wetting dispersing agent are used in compounding.The raw materials used in the present invention is from a wealth of sources, low in cost, and solvent usage is few, and the paint film property formed is good, especially the excellent shock resistance of paint film, practical.
Description
Technical field
The present invention is to be related to a kind of research of environment-friendly type coating with high-impact paint film property, belongs to functional material preparation
Field.
Technical background
Currently, the organic volatile that the total output of whole world paint and coating more than 6,000 ten thousand tons, is discharged to atmosphere
(VOC) nearly up to more than 3,000 ten thousand tons, directly atmosphere is caused seriously to pollute, destroys environment for human survival, damaged human health, make
At the huge wasting of resources.With the enhancing of the environmental consciousness of people, countries in the world have carried out VOC emission stringent limit
System.For the foundation of propulsion " Green Development is built a resource-conserving and environment-friendly society ".Develop nontoxic, the coating of low pollution
It is the top priority and research direction of coating research.The research of high solid coating will take new step for the development of green coating
It cuts down.With, attention of the country to infrastructures such as industry, anticorrosive paint petroleum industry, heavy-duty machinery, urban infrastructure and
It is used widely in pipe-line construction field.Powdery paints, solventless coatings due to execution conditions it is harsher, to constrain it
Development in erosion shield field.Water paint easily causes flash rusting when constructing, and its Corrosion Protection is general after film forming
It is undesirable, do not have high anticorrosion requirement yet.Therefore, to adapt to increasingly strict regulation and construction requirement, there is an urgent need to open
It is low to send out VOC content a kind of, and film performance is good, and the high solid with excellent water resistance, anticorrosive property and chemical resistance
Part coating.
Recent domestic is some to be studied the preparation method for reporting high solid coating and influences many of resin viscosity
Factor.Such as resin molecular weight, molecular weight distribution.Typical high solids part coating is main still using low with matrix resin at present
Based on polydispersity polymer, molecular weight is lower, and its viscosity is lower, and the solid content after being made into coating can be higher.But high solid
System is influenced will limit polymer molecular weight used in Polymeric vehicle by requirements such as construction technology, paint film properties, thus
Limit the amount of solid content of coating.The solid content of existing high solid coating (is generally not more than for 50%~65%
70%), this is because the viscosity of coating cannot be excessively high.If original paint viscosity is excessively high, more dilution must be added in construction
Agent is evaporate into atmosphere in paint film drying process as soon as carrying out these diluents, and such high solid coating loses environmental protection
Meaning；Two, which carry out diluent, is largely added, and necessarily will cause the construction solid content decline of coating, to reach defined paint film thickness
Degree, it is necessary to increase spraying pass, reduce labor efficiency in this way, also increase the volatilization of solvent, be equally unfavorable for environmental protection.At this
In a little influence factors, reduces viscosity and improve the molecule that most effective, the most economical method of amount of solid content still passes through reduction resin
It measures to realize.Dissaving polymer is introduced into coating, due to its unique three-dimensional spherical structure, it can be effectively reduced
Solution viscosity, to improve its solid content.But the synthesis process of dissaving polymer is complex at present, reaction condition
Harshness, cost of material is expensive, and the monomer of adaptation is less, so that the Costco Wholesale of dissaving polymer is higher, it can only be in certain special types
It is applied in coating, limits its scale application in coating industry.Therefore, good, the at low cost environmental protection of exploitation paint film property
Type coating becomes extremely urgent.
Summary of the invention
It is an object of the invention to overcome above-mentioned the shortcomings of the prior art, a kind of environment-friendly type high impact resistance is disclosed
The preparation method of coating, it is characterized in that by with branched structure and resin that solid content is 70%, and dispersing agent, levelling agent,
Pigment and solvent are made into coating, are shaken in Wind-cooling type high speed disperser using power and are sufficiently mixed pigment and base-material.Again plus
Enter curing agent, spray after mixing evenly, obtain that paint film property is excellent, especially the good paint plate of shock resistance.
The present invention relates to a kind of Coating material compositions to be, including following component and part:
Functional resin is 40-50, dispersing agent 0.5-2, levelling agent 0.5-1, pigment 20-30, solvent 15-
20.It is using power concussion that pigment and base-material is sufficiently mixed in Wind-cooling type high speed disperser that pick pearl will be added in the coating prepared
It closes.After mixing, the curing agent of 20-30wt% is added in coating, sprays after mixing evenly, obtains paint plate.
In preferred technical solution, the functional resin is the styrene-acrylic resin with branched structure, and solid content is
70%, absolute weight average molecular is greater than 17000g/mol, Zimm branching factor g ' < 0.8, parts by weight 40-50；
In preferred technical solution, the dispersing agent is that organic nonionic surface active agent and anionic soak
Dispersing agent is used in compounding, parts by weight 0.5-2；
In preferred technical solution, the levelling agent is that polyester resin change properties of organic silicon, acrylate copolymer and fluorine carbon change
Property polyacrylate copolymer in two or more compounding, parts by weight 0.5-1；
In preferred technical solution, the pigment is two or more compoundings of titanium dioxide, barium sulfate etc., parts by weight
For 20-30；
In preferred technical solution, the solvent be heavy aromatics, propylene glycol methyl ether acetate, trimethylbenzene etc. one kind or
Several mixing；Its parts by weight is 15-20；
In preferred technical solution, the curing agent is polyisocyanic acid ester type curing agent；Additional amount is the 20- of coating
30wt%.
The invention has the advantages that introducing the resin of branched structure in coating, viscosity is lower, and it is higher solid content can be made
Coating reduces the influence to environment, easy to operate, low in cost.Simultaneously because introducing the molecular weight phase of the resin of branched structure
To higher, it is made into coating, after forming paint film, excellent in mechanical performance.Preparation and application of the invention to environment-friendly type high solid coating
Have great importance.
Detailed description of the invention
Fig. 1 is surface topography map of the paint film of the preparation of comparative example 1 after shock resistance is tested；
Fig. 2 is surface topography map of the paint film of the preparation of comparative example 2 after shock resistance is tested；
Fig. 3 is surface topography map of the paint film of the preparation of embodiment 1 after shock resistance is tested.
Specific embodiment
Comparative example 1
Commercially available resin (model ZJ-220-70, solid content 70%, molecular weight MwFor 6600g/mol.), it will
The ZJ-220-70 resin of 50wt%, the mashing solvent or diluent of the PMA of 13wt%, 2.7wt%, the D232S of 0.3wt%, 0.5wt%'s
The R960 titanium dioxide of the 202P of P104S, 1wt%, 25wt%, the ultra-fine barium sulfate of 4wt%, the 100 of 3wt%#Heavy aromatics,
The BYK358 of the 8772 and 0.2wt% of 0.3wt% matches lacquering according to aforementioned proportion, then 40g pearl is added in wind in the paint prepared
It is shaken in cold mould high speed disperser using power and is sufficiently mixed pigment and base-material, the time is two hours.It will consolidate after mixing
Agent is mixed with white paint by the proportion of 1:4, is stirring evenly and then adding into diluent and is again stirring for, and is filtered with copper mesh, and white paint is made.
The spray painting made by this method, the film thickness formed after having sprayed are 50 μm.Measuring its surface drying time is 21 minutes, adhesive force
It is 1 grade, pencil hardness 3H, under 1000g*50cm percussion, paint film is destroyed, and shock resistance is unqualified.Fig. 1 is
The surface topography map of paint film prepared by comparative example 1 after shock resistance is tested.
Comparative example 2
Make by oneself line style Hydroxylated acrylic resin, by styrene (104g, 1mol), methyl methacrylate (105g,
1mol), butyl acrylate (141g, 1.1mol), hydroxypropyl acrylate (182g, 1.4mol), methacrylic acid (12g,
It 0.14mol) is uniformly mixed, is added dropwise to dropwise containing dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.
Benzoyl peroxide (30g) is used as initiator, and linear dimerization body (6g) flows back anti-as being molecular weight regulator at 135 DEG C
After answering 8 hours, the linear hydroxy acrylic resin that solid content is 69.3%, molecular weight M are obtainedwFor 17020g/mol.It will
The linear hydroxy acrylic resin of 50wt%, the PMA of 13wt%, 2.7wt% are beaten solvent or diluent, 0.3wt%D232S, 0.5wt%
P104S, 1wt%202P, 25wt%R960 titanium dioxide, 4wt% ultra-fine barium sulfate, 3wt%100#Heavy aromatics, 0.3wt%8772
Match lacquering according to aforementioned proportion with 0.2wt%BYK358, then 40g pearl is added in Wind-cooling type high speed disperser in the paint prepared
It is shaken using power and is sufficiently mixed pigment and base-material, the time is two hours.After mixing by curing agent and white paint by 1:4's
Proportion mixing, is stirring evenly and then adding into diluent and is again stirring for, and filtered with copper mesh, and white paint is made.The spray made by this method
Paint, the film thickness formed after having sprayed are 50 μm.Measuring its surface drying time is 17 minutes, and adhesive force is 1 grade, and pencil hardness is
4H, under 1000g*50cm percussion, paint film is destroyed, and shock resistance is unqualified.Fig. 2 is paint prepared by comparative example 2
Surface topography map of the film after shock resistance is tested.
Embodiment 1
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (0.872g, 0.004mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 70.6%, molecular weight M are obtainedwFor
17000g/mol, Zimm branching factor g ' are 0.76.By the branched hydroxyl acrylic resin of 50wt%, the PMA of 13wt%,
2.7wt% mashing solvent or diluent, 0.3wt%D232S, 0.5wt%P104S, 1wt%202P, 25wt%R960 titanium dioxide, 4wt% are super
Thin barium sulfate, 3wt%100#Heavy aromatics, 0.3wt%8772 and 0.2wt%BYK358 match lacquering according to aforementioned proportion, then will match
Good paint, which is added 40g pearl and is shaken in Wind-cooling type high speed disperser using power, is sufficiently mixed pigment with base-material, and the time is
Two hours.Curing agent is mixed with white paint by the proportion of 1:4 after mixing, diluent is stirring evenly and then adding into and is again stirring for,
And filtered with copper mesh, white paint is made.The spray painting made by this method, the film thickness formed after having sprayed are 45 μm.Measure it
Surface drying time is 15 minutes, and adhesive force is 1 grade, pencil hardness 3H, under 1000g*50cm percussion, the intact nothing of paint film
Damage, shock resistance and flexural strength are qualified.Fig. 3 is surface topography of the paint film of the preparation of embodiment 1 after shock resistance is tested
Figure.
Embodiment 2
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (1.308g, 0.006mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 70.7%, molecular weight M are obtainedwFor
17500g/mol, Zimm branching factor g ' are 0.80.By the branched hydroxyl acrylic resin of 50wt%, the PMA of 13wt%,
2.7wt% mashing solvent or diluent, 0.3wt%D232S, 0.5wt%P104S, 1wt%202P, 25wt%R960 titanium dioxide, 4wt% are super
Thin barium sulfate, 3wt%100#Heavy aromatics, 0.3wt%8772 and 0.2wt%BYK358 match lacquering according to aforementioned proportion, then will match
Good paint, which is added 40g pearl and is shaken in Wind-cooling type high speed disperser using power, is sufficiently mixed pigment with base-material, and the time is
Two hours.Curing agent is mixed with white paint by the proportion of 1:4 after mixing, diluent is stirring evenly and then adding into and is again stirring for,
And filtered with copper mesh, white paint is made.The spray painting made by this method, the film thickness formed after having sprayed are 50 μm.Measure it
Surface drying time is 17 minutes, and adhesive force is 1 grade, pencil hardness 3H, under 1000g*50cm percussion, the intact nothing of paint film
Damage, shock resistance and flexural strength are qualified.
Embodiment 3
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (1.744g, 0.008mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 70.3%, molecular weight M are obtainedwFor
17900g/mol, Zimm branching factor g ' are 0.79.By the branched hydroxyl acrylic resin of 50wt%, the PMA of 13wt%,
2.7wt% mashing solvent or diluent, 0.3wt%D232S, 0.5wt%P104S, 1wt%202P, 25wt%R960 titanium dioxide, 4wt% are super
Thin barium sulfate, 3wt%100#Heavy aromatics, 0.3wt%8772 and 0.2wt%BYK358 match lacquering according to aforementioned proportion, then will match
Good paint, which is added 40g pearl and is shaken in Wind-cooling type high speed disperser using power, is sufficiently mixed pigment with base-material, and the time is
Two hours.Curing agent is mixed with white paint by the proportion of 1:4 after mixing, diluent is stirring evenly and then adding into and is again stirring for,
And filtered with copper mesh, white paint is made.The spray painting made by this method, the film thickness formed after having sprayed are 40 μm.Measure it
Surface drying time is 11 minutes, and adhesive force is 1 grade, pencil hardness 4H, under 1000g*50cm percussion, the intact nothing of paint film
Damage, shock resistance and flexural strength are qualified.
Embodiment 4
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (2.181g, 0.01mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 71%, molecular weight M are obtainedwFor 20900g/
Mol, Zimm branching factor g ' are 0.75.By the branched hydroxyl acrylic resin of 50wt%, the PMA of 13wt%, 2.7wt% mashing
Solvent or diluent, 0.3wt%D232S, 0.5wt%P104S, 1wt%202P, 25wt%R960 titanium dioxide, 4wt% ultra-fine barium sulfate,
3wt%100#Heavy aromatics, 0.3wt%8772 and 0.2wt%BYK358 match lacquering according to aforementioned proportion, then the paint prepared is added
40g pearl, which is shaken in Wind-cooling type high speed disperser using power, is sufficiently mixed pigment and base-material, and the time is two hours.Mixing
Curing agent is mixed with white paint by the proportion of 1:4 after uniformly, diluent is stirring evenly and then adding into and is again stirring for, and with copper mesh mistake
White paint is made in filter.The spray painting made by this method, the film thickness formed after having sprayed are 40 μm.Measuring its surface drying time is
12 minutes, adhesive force was 1 grade, and pencil hardness 3H, under 1000g*50cm percussion, paint film is intact, impact resistance
It can be with flexural strength qualification.
Embodiment 5
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (1.091g, 0.005mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 70.5%, molecular weight M are obtainedwFor
17800g/mol, Zimm branching factor g ' are 0.76.By the branched hydroxyl acrylic resin of 50wt%, the PMA of 18wt%,
6wt% is beaten solvent or diluent, 1wt%D232S, 1wt%P104S, 1wt%202P, 18wt%R960 titanium dioxide, the ultra-fine sulfuric acid of 2wt%
Barium, 2wt%100#Heavy aromatics, 0.5wt%8772 and 0.5wt%BYK358 match lacquering, then the paint that will be prepared according to aforementioned proportion
40g pearl is added to be sufficiently mixed pigment and base-material using power concussion in Wind-cooling type high speed disperser, the time is two hours.
Curing agent is mixed with white paint by the proportion of 1:4 after mixing, diluent is stirring evenly and then adding into and is again stirring for, and use copper mesh
White paint is made in filtering.The spray painting made by this method, the film thickness formed after having sprayed are 46 μm.Measure its surface drying time
It is 13 minutes, adhesive force is 1 grade, and pencil hardness 3H, under 1000g*50cm percussion, paint film is intact, shock resistance
Performance and flexural strength are qualified.
Embodiment 6
By styrene (104g, 1mol), methyl methacrylate (105g, 1mol), butyl acrylate (141g,
1.1mol), hydroxypropyl acrylate (181g, 1.4mol), methacrylic acid (12g, 0.14mol) are uniformly mixed, and are added dropwise to dropwise
Contain dimethylbenzene, propylene glycol methyl ether acetate and 100#In the solvent of heavy aromatics.Benzoyl peroxide (30g) is as initiation
Agent, linear dimerization body (6g) are added chain-transferring agent monomer MPOEM (1.526g, 0.007mol) and exist as being molecular weight regulator
At 135 DEG C after back flow reaction 8 hours, the branched hydroxyl acrylic resin that solid content is 70.1%, molecular weight M are obtainedwFor
17600g/mol, Zimm branching factor g ' are 0.71.By the branched hydroxyl acrylic resin of 40wt%, the PMA of 18wt%,
6wt% is beaten solvent or diluent, 1wt%D232S, 1wt%P104S, 1wt%202P, 26wt%R960 titanium dioxide, the ultra-fine sulfuric acid of 4wt%
Barium, 2wt%100#Heavy aromatics, 0.5wt%8772 and 0.5wt%BYK358 match lacquering, then the paint that will be prepared according to aforementioned proportion
40g pearl is added to be sufficiently mixed pigment and base-material using power concussion in Wind-cooling type high speed disperser, the time is two hours.
Curing agent is mixed with white paint by the proportion of 1:4 after mixing, diluent is stirring evenly and then adding into and is again stirring for, and use copper mesh
White paint is made in filtering.The spray painting made by this method, the film thickness formed after having sprayed are 40 μm.Measure its surface drying time
It is 11 minutes, adhesive force is 1 grade, and pencil hardness 4H, under 1000g*50cm percussion, paint film is intact, shock resistance
Performance and flexural strength are qualified.
Claims (6)
1. the invention discloses a kind of preparation methods of coating；The components by weight percent of the coating is as follows: functional resin 40-50,
Dispersing agent is 0.5-2, levelling agent 0.5-1, pigment 20-30, solvent 15-20.Exist pick pearl is added in the coating prepared
It is shaken in Wind-cooling type high speed disperser using power and is sufficiently mixed pigment and base-material.After mixing, 20- is added in coating
The curing agent of 30wt%, sprays after mixing evenly, obtains paint plate.The functional resin is the phenylpropyl alcohol tree with branched structure
Rouge, solid content 70%, absolute weight average molecular are greater than 17000g/mol, Zimm branching factor g ' < 0.8.
2. a kind of component of coating according to claim 1, which is characterized in that the dispersing agent is that organic is non-ionic
Surfactant and anionic wetting dispersing agent are used in compounding.
3. a kind of component of coating according to claim 1, which is characterized in that the levelling agent is that polyester modification is organic
Two or more compoundings in silicon, acrylate copolymer and fluorine-carbon modified polyacrylate copolymer.
4. a kind of component of coating according to claim 1, which is characterized in that the pigment is titanium dioxide, barium sulfate etc.
Two or more compounding.
5. a kind of component of coating according to claim 1, which is characterized in that the solvent is heavy aromatics, propylene glycol first
One or more of mixing of ether acetate, trimethylbenzene etc..
6. a kind of component of coating according to claim 1, which is characterized in that the curing agent is solid for polyisocyanic acid ester type
Agent.
Priority Applications (1)
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| CN114479595A (en) * | 2021-07-13 | 2022-05-13 | 江苏膜可光学材料有限公司 | Novel water-based environment-friendly paint for enhancing surface adhesive performance of packaging box and process flow |
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| CN101538345A (en) * | 2009-02-05 | 2009-09-23 | 上海华谊（集团）公司 | Dendritic hyper-branched polymer, preparation method and application thereof |
| WO2014069634A1 (en) * | 2012-11-05 | 2014-05-08 | 日産化学工業株式会社 | Curable composition containing fluorine-containing hyperbranched polymer and siloxane oligomer |
| CN107216419A (en) * | 2017-05-23 | 2017-09-29 | 常州大学 | A kind of method for preparing high concentration hydroxyl polyacrylic resin and its solidification |
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| CN101538345A (en) * | 2009-02-05 | 2009-09-23 | 上海华谊（集团）公司 | Dendritic hyper-branched polymer, preparation method and application thereof |
| WO2014069634A1 (en) * | 2012-11-05 | 2014-05-08 | 日産化学工業株式会社 | Curable composition containing fluorine-containing hyperbranched polymer and siloxane oligomer |
| CN107216419A (en) * | 2017-05-23 | 2017-09-29 | 常州大学 | A kind of method for preparing high concentration hydroxyl polyacrylic resin and its solidification |
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| CN114479595A (en) * | 2021-07-13 | 2022-05-13 | 江苏膜可光学材料有限公司 | Novel water-based environment-friendly paint for enhancing surface adhesive performance of packaging box and process flow |
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