CN108610870A - A kind of environment-friendly hot-melt type pencil lacquer and preparation method thereof and application process - Google Patents
A kind of environment-friendly hot-melt type pencil lacquer and preparation method thereof and application process Download PDFInfo
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- CN108610870A CN108610870A CN201810410623.4A CN201810410623A CN108610870A CN 108610870 A CN108610870 A CN 108610870A CN 201810410623 A CN201810410623 A CN 201810410623A CN 108610870 A CN108610870 A CN 108610870A
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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
- C09D157/00—Coating compositions based on unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D157/02—Copolymers of mineral oil hydrocarbons
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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
- 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
- C09D5/002—Priming paints
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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
- C09D7/65—Additives macromolecular
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- 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
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
5~10 parts of 25~30 parts of primer resin, 40~60 parts of filler and epoxidized soybean oil are uniformly mixed in terms of mass fraction, are obtained priming paint by a kind of environment-friendly hot-melt type pencil lacquer and preparation method thereof and application process;5~10 parts of 40~50 parts of top-coat resin, 30~40 parts of pigment and epoxidized soybean oil are uniformly mixed, finishing coat is obtained;5~10 parts of 80~90 parts of top-coat resin and epoxidized soybean oil are uniformly mixed, varnish is obtained.Pumping painting method is squeezed using cushion rubber, pencil shaft is passed through to the hopper of priming paint, finishing coat and varnish successively, pencil japanning is completed after cooling.The raw material environmental protection that the present invention uses, production process clean environment firendly, without any pollution, the curing of coatings time is less than 5min, and heat resisting temperature is more than 100 DEG C, meets the requirement of European Union Toy Safety Standards EN71.
Description
Technical field
The present invention relates to pencil manufacturing technology field, more particularly to a kind of environment-friendly hot-melt type pencil lacquer and preparation method thereof with
And application process.
Background technology
The dress that pencil lacquer is mainly used for Wood-bar pencil applies, to have the function that beautiful and protection pencil.Currently, pencil lacquer
It prepares based on nitrate paint, when preparation mixes NC Nitroncellulose mixed solvent, by the solvent of NC Nitroncellulose dissolving, obtains
Base-material adds different pigment and auxiliary agent, is configured to different types of pencil lacquer.Mixed solvent master for preparing pencil lacquer
To include esters, ketones and alcohols solvent, when use not only pollutes environment, some also contain harmful substance, endanger pupil's
Health.
It is maximum to think that lead for retractable pencil endangers child in traditional concept always, but actually most it is a risk that the oil of pencil surface
Paint, timber and binder contain the metals toxin such as metallic lead, preservative and mercury, arsenic in the paint of these pencil surfaces instead,
Child body health to stinging pencil causes damages.Pencil is that student is most common, and it is lower and lower especially to write study now
Age, safety and quality are even more important to the students of the junior years even preschool child.Domestic stationery goods quality is irregular, very greatly
Fall behind relatively in terms of the formulation of stationery standard because of China in degree, lacks sound standards system.In addition, domestic consumer
Shape and smell, this critical issue of ignorance quality safety are often more paid close attention to when buying stationery.
So, safe stationery how on earth is selectedExpert advice first has to avoid using gaudy, band as possible
The stationery of fragrance, the bright and new stationery of appearance may include exceeded plasticiser.In addition, also needing identification professional standard.State at present
Interior stationery generally with《The safety general requirement of students' supplies》For reference, but Ye You manufacturers take European Union or Unite States Standard, this
Part of the manufacturer's chance sought loopholes just is given.By taking the CE standards of European Union as an example, tested from most basic physical mechanical characteristic to most
The index test of advanced various additives, CE are divided into several levels to the detection of stationery.Some producers may be only by most
Just its product is broadly identified after the identification of low level and has reached EU criteria, to misguide the consumer.
It is reported that due to not referring to the requirement to content of plasticizing agent standard in stationery in current China's pressure standard,
But the environment protectment protection in China provides the harmful substance row in students' supplies with reference to international requirement.To enterprise
For, this kind of detection represents high cost again, so only the regular enterprise of considerable scale just can active inspection.With the country
It is annual to be used for what profession detected since its product sells to global 80 countries, areas for Wood pencil brand Marko's pencil
Expense is just more than 5,000,000 yuan, to ensure that product reaches all standards.
Recent U.S. Consumer Product Safety Commission (CPSC) to heavy metal lead in articles for children in addition to carrying out stringent management and control
Outside, also to cadmium, chromium etc., other heavy metals also strengthen strict supervision measure.According to CPSIA bills, (U.S.'s Consumer Product Safety changes
Into bill), articles for children include not only toy, also include that those product appearances or function show that product is the use that children use
Product are such as printed on all kinds of articles for use of animal cartoon pattern.It is reported that many non-toys daily necessities produce export enterprise to CPSIA
Etc. regulations have little understanding, if pencil manufacturing thinks that pencil is not belonging to toy, quality requirement does not have that toy is stringent, thus in oil
In the buying of urushoil ink and it is unaware that and carries out quality control according to related articles for children requirement.But in the actual production process
Pencil appearance is most of all to use paint, printing ink or overlay film, child to be easy to contact when in use, this is normal to product
Outlet and sale bring great risk.
Invention content
Based on the above issues, the purpose of the present invention is to provide a kind of environment-friendly hot-melt type pencil lacquer and preparation method thereof and
Application process.
In order to achieve the above objectives, the technical solution adopted by the present invention is:
A kind of environment-friendly hot-melt type pencil lacquer, including priming paint and finishing coat, wherein priming paint is in terms of mass fraction, including priming paint tree
5~10 parts of 25~30 parts of fat, 40~60 parts of filler and epoxidized soybean oil;Finishing coat is in terms of mass fraction, including top-coat resin 40
5~10 parts of~50 parts, 30~40 parts of pigment and epoxidized soybean oil.
The present invention, which further improves, to be, primer resin is the one or both in C5 Petropols, C9 Petropols
The mixture of arbitrary proportion.
The present invention, which further improves, to be, top-coat resin is thermoplastic polyurethane.
The present invention, which further improves, to be, thermoplastic polyurethane isWHT-1164、WHT-1172、WHT-1264 orWHT-1129。
The present invention, which further improves, to be, pigment is the inorganic pigment or organic pigment that fineness is more than 2000 mesh.
The present invention, which further improves, to be, further includes varnish, varnish is in terms of mass fraction, including top-coat resin 80~90
5~10 parts of part and epoxidized soybean oil.
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 25~30 parts of primer resin, 40~60 parts of filler and epoxy
5~10 parts of soybean oil is uniformly mixed, and obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 40~50 parts of top-coat resin, 30~40 parts of pigment and epoxy
5~10 parts of soybean oil is uniformly mixed, and obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, by 5~10 parts of 80~90 parts of top-coat resin and epoxidized soybean oil
It is uniformly mixed, obtains varnish.
The present invention, which further improves, to be, primer resin is the one or both in C5 Petropols, C9 Petropols
The mixture of arbitrary proportion;Top-coat resin is thermoplastic polyurethane;Pigment is the environmental protection inorganic pigment that fineness is more than 2000 mesh
Or organic pigment.
A kind of application process of environment-friendly hot-melt type pencil lacquer squeezes pumping painting method, by pencil shaft successively the bottom of by using cushion rubber
The hopper of paint, finishing coat and varnish completes pencil japanning, wherein the temperature of priming paint is maintained at 180-220 in priming paint hopper after cooling
Between DEG C, the temperature of the finishing coat in finishing coat hopper and the varnish in varnish hopper is maintained between 150-190 DEG C.
The present invention, which further improves, to be, the japanning number of priming paint is 1-3 times, and the japanning number of finishing coat is 1-3 times, clearly
The japanning number of paint is 0-2 times.
Compared with prior art, the device have the advantages that:Priming paint forms pencil lacquer with finishing coat in the present invention,
In, priming paint includes primer resin, filler and epoxidized soybean oil;Finishing coat includes top-coat resin, pigment and epoxidized soybean oil.It adopts
Raw material environmental protection, in preparation process, same environmental protection will not cause the pollution of environment, and preparation method is easy, be easy to real
It is existing.It applies into luggage in application, squeezing pumping painting method using cushion rubber, easily prepared pencil, and application process clean environment firendly, does not appoint
What is polluted, and meets the requirement of European Union Toy Safety Standards EN71.Existing equipment is reequiped in the present invention, you can realize to lead
The japanning of pen, it is at low cost, and japanning is efficient, and coating performance is excellent, and the curing of coatings time is less than 5min, and heat resisting temperature is more than
100℃。
Further, the mixing of one or both arbitrary proportion of the primer resin for C5 Petropols, in C9 Petropols
Object.C5 Petropols and C9 Petropols are respectively the C5 fractions and C9 fractions of petroleum cracking institute by-product, through pre-treatment, polymerization,
A kind of thermoplastic resin of the technique productions such as distillation;Top-coat resin is thermoplastic polyurethane, uses thermoplastic resin at membrane material
Material, it is easy to accomplish to the japanning of pencil.
Further, in application, being reequiped to existing lacquering device, heating and thermal insulation is installed additional on the hopper of lacquering device
Device ensures that heat molten type pencil lacquer is in hot melt state and japanning to pencil can be realized, at low cost.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail, but the present invention is not only limited in these
Example.
A kind of environment-friendly hot-melt type pencil lacquer, including priming paint and finishing coat, wherein priming paint is in terms of mass fraction, including priming paint tree
5~10 parts of 25~30 parts of fat, 40~60 parts of filler and epoxidized soybean oil;Finishing coat is in terms of mass fraction, including top-coat resin 40
5~10 parts of~50 parts, 30~40 parts of pigment and epoxidized soybean oil.Varnish is in terms of mass fraction, including top-coat resin 80~90
5~10 parts of part and epoxidized soybean oil.
The mixture of one or both arbitrary proportion of the primer resin for C5 Petropols, in C9 Petropols.C5 oil
Resin and C9 Petropols are respectively the C5 fractions and C9 fractions of petroleum cracking institute by-product, through techniques such as pre-treatment, polymerization, distillations
A kind of thermoplastic resin of production.
Top-coat resin is thermoplastic polyurethane.Such as Wanhua Chemical Group Co., Ltd.WHT-
1164、WHT-1172、WHT-1264、WHT-1129 etc..
Pigment is the environmental protection inorganic pigment or organic pigment that fineness is more than 2000 mesh.
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 25~30 parts of primer resin, 40~60 parts of filler and epoxy
5~10 parts of soybean oil is uniformly mixed, and obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 40~50 parts of top-coat resin, 30~40 parts of pigment and epoxy
5~10 parts of soybean oil is uniformly mixed, and obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, by 5~10 parts of 80~90 parts of top-coat resin and epoxidized soybean oil
It is uniformly mixed, obtains varnish.
The application process of above-mentioned environment-friendly hot-melt type pencil lacquer, which is characterized in that cushion rubber is adapted as to lacquering device and squeezes pumping painting
Lacquering device, it is to install heating and heat-insulating device additional on hopper mainly to reequip position, ensures that heat molten type pencil lacquer is in hot melt state,
The temperature of wherein priming paint hopper is maintained between 180-220 DEG C, the temperature of finishing coat and varnish hopper be maintained at 150-190 DEG C it
Between.
Pumping painting method is squeezed using cushion rubber, pencil shaft is passed through to the hopper of priming paint, finishing coat and varnish successively, lead is completed after cooling
Japanning, wherein the temperature of priming paint is maintained between 180-220 DEG C in priming paint hopper, the finishing coat in finishing coat hopper and mixing varnish
The temperature of varnish in bucket is maintained between 150-190 DEG C.
According to the japanning requirement of different pencils, the japanning number of priming paint is 1-3 times, and the japanning number of finishing coat is 1-3 times, clearly
The japanning number of paint is 0-2 times.
Embodiment 1
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 5 parts of 25 parts of primer resin, 60 parts of filler and epoxidized soybean oil
It is uniformly mixed, obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 50 parts of top-coat resin, 32 parts of pigment and epoxidized soybean oil 10
Part is uniformly mixed, and obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, 5 parts of 80 parts of top-coat resin and epoxidized soybean oil are uniformly mixed,
Obtain varnish.
Wherein, primer resin is C5 Petropols.
Top-coat resin is thermoplastic polyurethane, specially Wanhua Chemical Group Co., Ltd.
WHT-1164。
Pigment is the environmental protection inorganic pigment that fineness is more than 2000 mesh.
The application process of above-mentioned environment-friendly hot-melt type pencil lacquer squeezes pumping painting method, by pencil shaft successively the bottom of by using cushion rubber
The hopper of paint, finishing coat and varnish completes pencil japanning after cooling, wherein the temperature of priming paint is 180 DEG C in priming paint hopper, finishing coat
Finishing coat temperature in hopper is 150 DEG C, and the temperature of the varnish in varnish hopper is 160 DEG C.
According to the japanning requirement of different pencils, the japanning number of priming paint is 1 time, and the japanning number of finishing coat is 3 times, varnish
Japanning number is 1 time.
Embodiment 2
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 6 parts of 27 parts of primer resin, 50 parts of filler and epoxidized soybean oil
It is uniformly mixed, obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 9 parts of 45 parts of top-coat resin, 35 parts of pigment and epoxidized soybean oil
It is uniformly mixed, obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, 7 parts of 85 parts of top-coat resin and epoxidized soybean oil are uniformly mixed,
Obtain varnish.
Wherein, primer resin is C9 Petropols.
Top-coat resin is thermoplastic polyurethane, specially Wanhua Chemical Group Co., Ltd.
WHT-1172。
Pigment is the environment-friendly type organic pigment that fineness is more than 2000 mesh.
The application process of above-mentioned environment-friendly hot-melt type pencil lacquer squeezes pumping painting method, by pencil shaft successively the bottom of by using cushion rubber
The hopper of paint, finishing coat and varnish completes pencil japanning after cooling, wherein the temperature of priming paint is 220 DEG C in priming paint hopper, finishing coat
Finishing coat temperature in hopper is 170 DEG C, and the temperature of the varnish in varnish hopper is 150 DEG C.
According to the japanning requirement of different pencils, the japanning number of priming paint is 2 times, and the japanning number of finishing coat is 2 times, varnish
Japanning number is 2 times.
Embodiment 3
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 7 parts of 28 parts of primer resin, 40 parts of filler and epoxidized soybean oil
It is uniformly mixed, obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 7 parts of 42 parts of top-coat resin, 30 parts of pigment and epoxidized soybean oil
It is uniformly mixed, obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, 9 parts of 87 parts of top-coat resin and epoxidized soybean oil are uniformly mixed,
Obtain varnish.
Wherein, primer resin is the mixture of C5 Petropols and C9 Petropols arbitrary proportions.
Top-coat resin is thermoplastic polyurethane, specially Wanhua Chemical Group Co., Ltd.
WHT-1264。
Pigment is the environment-friendly type organic pigment that fineness is more than 2000 mesh.
The application process of above-mentioned environment-friendly hot-melt type pencil lacquer squeezes pumping painting method, by pencil shaft successively the bottom of by using cushion rubber
The hopper of paint, finishing coat and varnish completes pencil japanning after cooling, wherein the temperature of priming paint is 190 DEG C in priming paint hopper, finishing coat
Finishing coat temperature in hopper is 180 DEG C, and the temperature of the varnish in varnish hopper is 170 DEG C.
According to the japanning requirement of different pencils, the japanning number of priming paint is 3 times, and the japanning number of finishing coat is 1 time, varnish
Japanning number is 1 time.
Embodiment 4
A kind of preparation method of environment-friendly hot-melt type pencil lacquer, includes the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 30 parts of primer resin, 55 parts of filler and epoxidized soybean oil 90
Part is uniformly mixed, and obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 5 parts of 40 parts of top-coat resin, 40 parts of pigment and epoxidized soybean oil
It is uniformly mixed, obtains finishing coat;
(3) varnish preparation method:It is in terms of mass fraction, 90 parts of top-coat resin and 10 parts of mixing of epoxidized soybean oil is equal
It is even, obtain varnish.
Wherein, primer resin is C5 Petropols.
Top-coat resin is thermoplastic polyurethane, specially Wanhua Chemical Group Co., Ltd.
WHT-1129。
Pigment is the environmental protection inorganic pigment that fineness is more than 2000 mesh.
The application process of above-mentioned environment-friendly hot-melt type pencil lacquer squeezes pumping painting method, by pencil shaft successively the bottom of by using cushion rubber
The hopper of paint, finishing coat completes pencil japanning after cooling, wherein the temperature of priming paint is 210 DEG C in priming paint hopper, in finishing coat hopper
Finishing coat temperature be 190 DEG C.
According to the japanning requirement of different pencils, the japanning number of priming paint is 1 time, and the japanning number of finishing coat is 3 times.
The present invention has the following advantages:First, the raw material environmental protection used, production process clean environment firendly, without any pollution.
Second, japanning is efficient, coating performance is excellent, and the curing of coatings time is less than 5min, and heat resisting temperature is more than 100 DEG C.Third, product
Safety and environmental protection meets the requirement of European Union Toy Safety Standards EN71.
Claims (10)
1. a kind of environment-friendly hot-melt type pencil lacquer, which is characterized in that including priming paint and finishing coat, wherein priming paint is in terms of mass fraction, packet
Include 5~10 parts of 25~30 parts of primer resin, 40~60 parts of filler and epoxidized soybean oil;Finishing coat is in terms of mass fraction, including face
5~10 parts of 40~50 parts of coating resins, 30~40 parts of pigment and epoxidized soybean oil.
2. a kind of environment-friendly hot-melt type pencil lacquer according to claim 1, which is characterized in that primer resin is C5 oil trees
The mixture of one or both arbitrary proportion in fat, C9 Petropols.
3. a kind of environment-friendly hot-melt type pencil lacquer according to claim 1, which is characterized in that top-coat resin is thermoplastic poly ammonia
Ester.
4. a kind of environment-friendly hot-melt type pencil lacquer according to claim 1 or 3, which is characterized in that thermoplastic polyurethane isWHT-1164、WHT-1172、WHT-1264 orWHT-1129。
5. a kind of environment-friendly hot-melt type pencil lacquer according to claim 1, which is characterized in that pigment is that fineness is more than 2000 mesh
Inorganic pigment or organic pigment.
6. a kind of environment-friendly hot-melt type pencil lacquer according to claim 1, which is characterized in that further include varnish, varnish is with matter
Measure number meter, including 5~10 parts of 80~90 parts of top-coat resin and epoxidized soybean oil.
7. a kind of preparation method of environment-friendly hot-melt type pencil lacquer, which is characterized in that include the following steps:
(1) priming paint preparation method:In terms of mass fraction, by 25~30 parts of primer resin, 40~60 parts of filler and epoxy soybean
5~10 parts of oil is uniformly mixed, and obtains priming paint;
(2) finishing coat preparation method:In terms of mass fraction, by 40~50 parts of top-coat resin, 30~40 parts of pigment and epoxy soybean
5~10 parts of oil is uniformly mixed, and obtains finishing coat;
(3) varnish preparation method:In terms of mass fraction, by 5~10 parts of mixing of 80~90 parts of top-coat resin and epoxidized soybean oil
Uniformly, varnish is obtained.
8. a kind of preparation method of environment-friendly hot-melt type pencil lacquer according to claim 7, which is characterized in that primer resin is
The mixture of one or both arbitrary proportion in C5 Petropols, C9 Petropols;Top-coat resin is thermoplastic polyurethane;Face
Material is the environmental protection inorganic pigment or organic pigment that fineness is more than 2000 mesh.
9. a kind of application process of the environment-friendly hot-melt type pencil lacquer prepared such as any one of claim 7 or 8 the method,
It is characterized in that, pumping painting method is squeezed using cushion rubber, pencil shaft is passed through to the hopper of priming paint, finishing coat and varnish successively, is completed after cooling
Pencil japanning, wherein the temperature of priming paint is maintained between 180-220 DEG C in priming paint hopper, the finishing coat in finishing coat hopper and varnish
The temperature of varnish in hopper is maintained between 150-190 DEG C.
10. the application process of environment-friendly hot-melt type pencil lacquer according to claim 9, which is characterized in that the japanning of priming paint
Number is 1-3 times, and the japanning number of finishing coat is 1-3 times, and the japanning number of varnish is 0-2 times.
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CN110283501A (en) * | 2019-07-25 | 2019-09-27 | 中山市诺必佳光学材料有限公司 | A kind of the UV pencil coating and its construction method of solvent-free zero-emission |
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