CN109608992A - A kind of building materials powdery paints and preparation method thereof - Google Patents
A kind of building materials powdery paints and preparation method thereof Download PDFInfo
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- CN109608992A CN109608992A CN201811565835.6A CN201811565835A CN109608992A CN 109608992 A CN109608992 A CN 109608992A CN 201811565835 A CN201811565835 A CN 201811565835A CN 109608992 A CN109608992 A CN 109608992A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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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
- C09D5/08—Anti-corrosive paints
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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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- Paints Or Removers (AREA)
Abstract
The invention belongs to the coating composition technical fields based on epoxy resin, specifically disclose a kind of building materials powdery paints and preparation method thereof, raw material including following mass fraction: 40-62 parts of epoxy resin, 30-48 parts of alkyd resin, 15-28 parts of polyethersulfone resin, 16-30 parts of pigment, 8-18 parts of filler, 0.5-1 parts of levelling agent, 4-12 parts of curing agent；Filler includes nanoclay, graphene, ceramic particles, nano silica and carbon black.The powdery paints being prepared using the technical program, permeability is strong, adhesive force is good, and when use can quickly form successional coating, effectively completely cuts off infringement of the extraneous corrosive medium to building materials.And the coating formed can replace the moisture of building material surface, when coating coating, need to only clear up the ponding of building material surface, be not required to the humidity of strict control building materials, and the drying steps before use is omitted improve processing efficiency.
Description
Technical field
The invention belongs to based on epoxy resin coating composition technical field more particularly to a kind of building materials powdery paints
And preparation method thereof.
Background technique
Building materials are the general designations of material used in civil engineering and architectural engineering, can be divided into structural material, ornament materials and
Certain proprietary materials.Building materials corrode in order to prevent, prolong the service life, and need to carry out necessary protection to it, often at present
The way of rule is to coat one layer of anticorrosive paint on the surface of building materials, prevents extraneous corrosive medium from causing to corrode to building materials.
Powdery paints is usually used in building materials anti-corrosion, and powdery paints is formed with hard resin and pigment, filler and auxiliary agent etc.
Solid powdery synthetic resin coating and usual vehicle type coating and water paint it is different, its decentralized medium is not solvent
And water, but air.Powdery paints has the characteristics of solvent-free pollution, 100% film forming, low energy consumption.Powdery paints has thermoplasticity
With thermosetting property two major classes.The appearance of film (gloss and levelability) of thermoplastic powder coating is poor, the adhesive force between metal
Also poor, so using less in building materials field.Thermosetting powder coating, thermosetting powder coating are generally used in building materials field
It is using thermoset synthetic resin as film forming matter, resin first melts during the drying process, then is solidified into after being chemically crosslinked smooth
Hard film.
Powdery paints permeability currently used for building materials is also weak, and cannot well contain building materials sometimes and seal, drop
Low anti-corrosion effect and corrosion protection service life；And many building materials are used in open air, and the environment used is more severe, to powdery paints
Antiseptic property more stringent requirements are proposed, current powdery paints anti-corrosive properties there are also reinforce space.
Summary of the invention
The purpose of the present invention is to provide a kind of building materials powdery paints and preparation method thereof, to solve to be currently used for powder
The bad problem of coating permeability, anti-corrosive properties.
In order to achieve the above object, base case of the invention are as follows: a kind of building materials powdery paints and preparation method thereof, packet
Include the raw material of following mass fraction: 40-62 parts of epoxy resin, 30-48 parts of alkyd resin, 15-28 parts of polyethersulfone resin, pigment
16-30 parts, 8-18 parts of filler, 0.5-1 parts of levelling agent, 4-12 parts of curing agent；Filler includes nanoclay, graphene, metal pottery
Porcelain particle, nano silica and carbon black.
The beneficial effect of this base case is:
1, epoxy resin mechanical property is good, but solidfied material is more crisp, has fatigue durability, resistance to cracking and thermal shock resistance
Epoxy resin, alkyd resin and polyethersulfone resin are used in mixed way in this programme according to fixed dosage, can have by the disadvantages of poor
Effect improves the toughness of epoxy resin, improves the comprehensive performance of epoxy resin.
2, nano silica and nanoclay cooperation can play the role of toughening to epoxy resin, improve the tough of coating
Property.Simultaneously it is found by the applicant that nano silica, nanoclay can fill up coating office due to solidification by its lesser size
The micropore generated is shunk in portion, is increased the crosslink density of coating, is reduced the transmission path of corrosive ion, while can also improve coating
Mechanical performance, thermal stability etc..Carbon black has the coloring and anti-ultraviolet performance for improving product, and carbon black, which is added, to be subtracted
Weak ultraviolet light acts on coating, delaying aging.And it is found by the applicant that nanoclay, nano silica are matched with a small amount of carbon black
It closes, the static mechanical property of coating can be enhanced, reduce dynamic loss factor, thermal stability, the hot air for improving coating are old
Change performance.
3, graphene has corrosion resistance, and graphene, which is added, can improve the corrosion resistance of coating.Ceramic particles both had
There are the toughness of metal, good thermal stability, and there is the high temperature resistant of ceramics, corrosion-resistant and anti abrasive characteristic, can obviously change
The comprehensive performance of the mechanical resistant impact and heat shock resistance of kind coating.Graphene, which is used in conjunction with to have with ceramic particles, cooperates with effect
Answer, etch-proof effect, concrete principle can be enhanced are as follows: graphene by be layering and it is effective it is evenly dispersed after, can be
Product surface forms a three-dimensional three-dimensional structure, and ceramic particles are dispersed in three-dimensional structure, help to strengthen the three-dimensional
Structure can obtain a filling plane to product surface projection, play the role of obstructing oxygen and water in environment, to reach anti-
Rotten purpose.
4, the powdery paints that this programme is prepared, permeability is strong, adhesive force is good, and when use can quickly form successional
Coating effectively completely cuts off infringement of the extraneous corrosive medium to building materials.And the coating formed can replace the moisture of building material surface, apply
When covering coating, the ponding of building material surface need to be only cleared up, the humidity of strict control building materials is not required to, the dry step before use is omitted
Suddenly, processing efficiency is improved.
Further, filler includes the raw material of following mass fraction: 6-10 parts of nanoclay, 10-16 parts of graphene, metal pottery
4-6 parts of porcelain particle, 8-12 parts of nano silica and 2-5 parts of carbon black.Applicant has found by test of many times, by filler material
Dosage controls within the above range, and the powdery paints comprehensive performance being prepared is preferable.
Further, pigment includes organic pigment and inorganic pigment, and organic pigment is phthalocyanine blue, phthalocyanine green, bright red, permanent yellow
One or more of, inorganic pigment is one or more of iron oxide red, iron oxide yellow, iron oxide black.
Further, the raw material including following mass fraction: 50-58 parts of epoxy resin, 35-40 parts of alkyd resin, polyether sulfone
20-25 parts of resin, 18-24 parts of pigment, 15-18 parts of filler, 0.5-0.8 parts of levelling agent, 8-12 parts of curing agent；Filler includes following
The raw material of mass fraction: 8-10 parts of nanoclay, 13-16 parts of graphene, 4-6 parts of ceramic particles, nano silica 10-
12 parts and carbon black 3-4 parts.Applicant is by repeatedly the study found that within the above range by the mass fraction control of raw material, prepare
Obtained powdery paints antiseptic property, permeability etc. are preferably.
The present invention also provides a kind of preparation methods of building materials powdery paints, comprising the following steps:
(1) ingredient: preparing the raw material of following mass fraction, and 40-62 parts of epoxy resin, 30-48 parts of alkyd resin, polyether sulfone
15-28 parts of resin, 16-30 parts of pigment, 8-18 parts of filler, 0.5-1 parts of levelling agent, 4-12 parts of curing agent；Wherein filler include with
The raw material of lower mass fraction: 6-10 parts of nanoclay, 10-16 parts of graphene, 4-6 parts of ceramic particles, nano silica
8-12 parts and carbon black 2-5 parts；
(2) filler is placed at subzero 10-20 DEG C and freezes 3-5h；Filler taking-up after freezing is put into milling apparatus
It is ground, grinds 20-40min, carry out magnetization treatment in process of lapping；
(3) remaining raw material is added and grinds 15-25min together, obtains mixed-powder；
(4) mixed-powder is added to double screw extruder melting extrusion, pressure roller tabletting；
(5) material obtained in step (4) is added in flour mill clay into power, the screen to filtrate, obtain powdery paints.
Filler is placed under low temperature after freezing processing in step (3) and is ground immediately, the crushing of filler is conducive to, makes grinding
Effect is more preferable, and grinding can make various materials adequately interact after freezing processing, preferably play synergistic effect.Grinding
Magnetization treatment in the process is conducive to ceramic particles and is dispersed in the three-dimensional structure of graphene, increases the anti-corruption of coating entirety
Corrosion.Powdery paints is prepared using aforesaid way, the powdery paints comprehensive performance being prepared is more preferable.
Further, in the step (3), resin is divided into two parts, a portion accounts for the 1/4-2/5 of resin total amount；
A part of resin first is added toward milling apparatus and grinds 4-6min together；Levelling agent is added, curing agent grinds 3-5min together；It is added
Pigment grinds 3-5min together；It is eventually adding residual resin grinding 5-9min.
Filler, curing agent, levelling agent etc. disperse more uniform in coating, and the anticorrosive property of coating, mechanical performance are better.It adopts
Raw material is ground in aforementioned manners, various materials can be made to be sufficiently mixed, and the materials such as filler, curing agent, levelling agent uniformly disperse.
Further, the main mill revolving speed of flour mill is 40-50r/minin, and the secondary mill revolving speed of flour mill is 20-30r/min, sieve
Net is 180-200 mesh.It is found by applicant's long term test, by the revolving speed control of flour mill in above range, flour mill grinding
Effect it is preferable.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the milling apparatus main view direction used in the embodiment of the present invention；
Fig. 2 is the cross-sectional view in the direction A-A in Fig. 1.
Specific embodiment
Appended drawing reference in Figure of description 1-2 includes: sand cylinder 10, rigid sieve plate 11, material spilling hole 111, circulation road
112, partition 12, transfer drum 20, drive rod 21, helical blade 211, the second sprocket wheel 212, transfer port 22, motor 30, the first sprocket wheel
31, conveyer chain 32, piston cylinder 40, spring 41, piston 42, exhaust pipe 43, one-way exhaust valve 431, corase grinding cylinder 50, discharge port 51,
It roughly grinds ball 52, circulation pipe 53, cross switch block 60, roll abrading-ball 61, shaft 70, stirring rod 71, pallet 72, discharge nozzle 80, sealing
Plate 90.
Embodiment 1
Present embodiment discloses a kind of building materials powdery paints, the raw material including following mass fraction: 56 parts of epoxy resin,
38 parts of alkyd resin, 22 parts of polyethersulfone resin, 20 parts of pigment, 18 parts of filler, 0.6 part of levelling agent, 10 parts of curing agent.Filler includes
The raw material of following mass fraction: 8 parts of nanoclay, 15 parts of graphene, 4 parts of ceramic particles, 10 parts of nano silica and
3 parts of carbon black.
A kind of preparation method of above-mentioned building materials powdery paints, comprising the following steps:
(1) ingredient: preparing the raw material of following mass fraction, and 56 parts of epoxy resin, 38 parts of alkyd resin, polyethersulfone resin 22
Part, 20 parts of pigment, 18 parts of filler, 0.6 part of levelling agent, 10 parts of curing agent.Filler includes the raw material of following mass fraction: nanometer is viscous
8 parts of soil, 15 parts of graphene, 4 parts of ceramic particles, 10 parts of nano silica and 3 parts of carbon black.
(2) filler is placed at subzero 15 DEG C and freezes 5h；Filler taking-up after freezing is put into milling apparatus and is carried out
Grinding grinds 30min, carries out magnetization treatment in process of lapping.
(3) resin is divided into two parts, a portion accounts for the 2/5 of resin total amount；A part first is added toward milling apparatus
Resin grinds 5min together with filler；Levelling agent is added, curing agent grinds 4min together；Pigment is added and grinds 5min together；Most
Residual resin is added afterwards and grinds 8min, obtains mixed-powder.
(4) mixed-powder is added to double screw extruder melting extrusion, pressure roller tabletting, the control of I area's temperature of extruder exists
80-95 DEG C, II area's temperature of extruder is controlled at 100-120 DEG C；
(5) material obtained in step (4) is added in flour mill clay into power, the screen to filtrate, obtain powdery paints；
The revolving speed that owner grinds that is milled is 40-50r/min, and the revolving speed of flour mill pair mill is 20-30r/min, and sieve is 180-200 mesh.
The milling apparatus used in the present embodiment includes sand cylinder 10, inflatable body, grinding mechanism and transport mechanism.Transmission
Mechanism includes the drive rod 21 for being fixed on the transfer drum 20 on 10 right side of sand cylinder and being rotatably connected in transfer drum 20, drive rod 21
Lower end stretch out transfer drum 20 bottom.The helical blade 211 for feeding is welded on drive rod 21, helical blade 211
Edge is remained with the inner wall of transfer drum 20 and is bonded.The top of transfer drum 20 is connected with the discharge nozzle being connected to transfer drum 20
80 and circulation pipe 53, it is L-shaped sealing plate 90 that the top of transfer drum 20, which is rotatably connected to longitudinal section, and the lower part of sealing plate 90 can
The feed inlet of discharge nozzle 80 or circulation pipe 53 is blocked, the upper end of sealing plate 90 passes through the top of transfer drum 20, passes through rotary seal
The top of plate 90 can make the feed inlet of the closing discharge nozzle 80 of sealing plate 90 or circulation pipe 53.
The partition 12 that oriented 20 side of transfer drum is arranged diagonally downward, 20 lower part of transfer drum are fixed in the lower part of sand cylinder 10
Side wall on be provided with the transfer port 22 of connection sand cylinder 10 and transfer drum 20, transfer port 22 is located at 12 lower end side of partition, partition
Material on 12 can be entered in transfer drum 20 by transfer port 22.Several pieces are further fixed in sand cylinder 10 to be located on partition 12
The rigid sieve plate 11 of side, rigid sieve plate 11 is equipped with three pieces in the present embodiment, and three pieces of rigid sieve plates 11 are uniformly spaced apart, and two
Multiple collision balls are placed between block rigidity sieve plate 11.The surface of rigid sieve plate 11 is provided with multiple material spilling holes 111, rigid sieve plate 11
Inside offer the circulation road 112 for being connected to each material spilling hole 111.
The shaft 70 that mechanism includes motor 30 and is fixedly connected with 30 output shaft of motor is ground, motor 30 is fixed on sand cylinder
10 bottom and the lower section for being located at partition 12, are fixed with the first sprocket wheel 31 on the output shaft of motor 30, are fixed on drive rod 21
The second sprocket wheel 212 positioned at the lower section of transfer drum 20 is arranged with same conveyer chain 32 on first sprocket wheel 31 and the second sprocket wheel 212.Turn
Axis 70 is distributed along short transverse and sequentially passes through partition 12 and three pieces of rigid sieve plates 11, and the top of shaft 70, which is fixed with, is located at grinding
Corase grinding cylinder 50 in 10 tops of cylinder, roughly grinds and is provided with multiple discharge ports 51 on the side wall of cylinder 50, roughly grinds in cylinder 50 and is placed with multiple bodies
The different corase grinding ball 52 of product.The top that one end of circulation pipe 53 sequentially passes through sand cylinder 10, roughly grinds cylinder 50, circulation pipe 53 and grinding
Cylinder 10 is the relationship being fixedly connected, and circulation pipe 53 and corase grinding cylinder 50 are then the relationships of rotation connection, and circulation pipe 53 is located at corase grinding cylinder
At 50 center of rotation.The stirring rod 71 being welded in shaft 70 between partition 12 and bottom rigidity sieve plate 11, stirring
Bar 71 is arranged in parallel with partition 12, is placed with vibrating ball on the partition 12 of sand cylinder 10.It is welded with grind section in shaft 70, grinds
Portion includes cross switch block 60 and multiple rolling abrading-balls 61 being rotatably connected on cross switch block 60, rolls abrading-ball 61 and cross switch block
60 specific connection type are as follows: two surfaces up and down of cross switch block 60 are provided with multiple arcs slot, and multiple rolling abrading-balls 61 are distinguished
It is rotatably connected in each arc groove.There are two grind section is set, two grind sections are distributed along short transverse and are respectively positioned on two pieces just
Between property sieve plate 11, surface of the rolling abrading-ball 61 with rigid sieve plate 11 in grind section is kept in contact, in rigid sieve plate 11
The lower rolling abrading-ball 61 of limitation cannot be detached from arc groove and can only rotate in arc groove.It is also welded in shaft 70 and is located at corase grinding cylinder
Pallet 72 between 50 and the top rigidity sieve plate 11, the longitudinal section of pallet 72 isosceles trapezoid with a narrow upper and lower width, on pallet 72
Be provided with multiple ports, be placed on pallet 72 multiple volumes it is different roll ball.
Inflatable body includes piston cylinder 40 and exhaust pipe 43, piston cylinder 40 be fixed on the left side wall of sand cylinder 10 and with grinding
Cylinder 10 is connected to, and is slidingly and sealingly connected with piston 42 in sand cylinder 10, piston 42 can back and forth be slided along the horizontal direction of piston cylinder 40
It is dynamic, spring 41 is connected between piston 42 and sand cylinder 10.Piston 42 and pallet 72 are opposite, roll ball with pallet on pallet 72
72 when rotating together, and rolling ball can hit on the piston 42.Exhaust pipe 43 is connected to piston cylinder 40, is connected on exhaust pipe 43
3 bronchuses, 3 bronchial exhaust ends are connected to the circulation road 112 on different rigidity sieve plate 11 respectively.Exhaust pipe 43 is close
The side of piston cylinder 40 is equipped with one-way exhaust valve 431, and piston cylinder 40 is equipped with breather cheek valve, the pressure in piston cylinder 40
When increase, one-way exhaust valve 431 is automatically opened, and the gas in piston cylinder 40 can be discharged by exhaust pipe 43；When piston cylinder 40
When interior pressure is reduced, breather cheek valve is automatically opened, and extraneous gas can add in piston cylinder 40.
When using milling apparatus, material to be ground is put into transfer drum 20, rotary seal plate 90, makes sealing plate 90 will
The feed inlet of discharge nozzle 80 is closed, and the feed inlet of circulation pipe 53 is opened.Start motor 30, motor 30 drives shaft 70, shaft
Corase grinding cylinder 50, grind section and pallet 72 on 70 rotate together, and at the same time, motor 30 also drives biography by chaindriven mode
Helical blade 211 in lever 21 rotates, and helical blade 211 conveys material to the direction of 53 feed inlet of circulation pipe, and material is logical
It crosses circulation pipe 53 and enters corase grinding cylinder 50.It is constantly rotated due to roughly grinding cylinder 50 in the course of work, roughly grinds the material and corase grinding in cylinder 50
Ball 52 is constantly stirred under the action of roughly grinding cylinder 50, is overturn, and corase grinding ball 52 has the work for tentatively rolling, grinding to material
With the material for grinding qualification is fallen on pallet 72 by discharge port 51, and the ball that rolls on pallet 72 rolls material again, grain
The material of diameter qualification is fallen on rigid sieve plate 11 by port, is then continued downwards by the material spilling hole 111 on rigid sieve plate 11
Transfer.
When material is fallen on rigid sieve plate 11, grind section is constantly stirred material, the rolling in simultaneous grinding portion
Abrading-ball 61 can be rolled when rotating with grind section on rigid sieve plate 11, rolled during abrading-ball 61 rolls and squeezed, mill just
Material on property sieve plate 11, makes the partial size of material become smaller.Grind section can collide when rotating with collision ball, and collision ball can shake
Fall the powder for being adhered to and rolling on abrading-ball 61.The qualified material of grinding is finally fallen on partition 12, under the effect of gravity along partition
12 glide, and material can be entered in transfer drum 20 by transfer port 22, and helical blade 211 transports material to sand cylinder 10 again
Interior, material circulates between sand cylinder 10, transfer drum 20.
During pallet 72 rotates, ball is rolled under the influence of centrifugal force towards the side wall of sand cylinder 10 on pallet 72
Movement, partially roll ball impact on the piston 42, to piston 42 apply active force, make piston 42 overcome spring 41 active force and
To the internal motion of piston cylinder 40, the pressure in piston cylinder 40 increases, and one-way exhaust valve 431 automatically opens, in piston cylinder 40
Gas passes sequentially through exhaust pipe 43, bronchus, circulation road 112 and finally blows out from material spilling hole 111, and the gas of blowout being capable of anti-leak-stopping
Expect that hole 111 blocks, discharging is avoided to have some setbacks.
Material is ground after a certain period of time, and rotary seal plate 90 closes sealing plate 90 by the feed inlet of circulation pipe 53, and goes out
The feed inlet of expects pipe 80 is opened, and the material after final grinding is discharged by discharge nozzle 80.
Embodiment 2
Present embodiment discloses a kind of building materials powdery paints, the raw material including following mass fraction: 54 parts of epoxy resin,
35 parts of alkyd resin, 20 parts of polyethersulfone resin, 20 parts of pigment, 18 parts of filler, 0.8 part of levelling agent, 10 parts of curing agent.Filler includes
The raw material of following mass fraction: 10 parts of nanoclay, 15 parts of graphene, 5 parts of ceramic particles, 10 parts of nano silica and
4 parts of carbon black.Wherein pigment includes organic pigment and inorganic pigment, and organic pigment selects bright red, inorganic pigment selection iron oxide red.
A kind of preparation method of above-mentioned building materials powdery paints, comprising the following steps:
(1) ingredient: preparing the raw material of following mass fraction, and 54 parts of epoxy resin, 35 parts of alkyd resin, polyethersulfone resin 20
Part, 20 parts of pigment, 18 parts of filler, 0.8 part of levelling agent, 10 parts of curing agent.Filler includes the raw material of following mass fraction: nanometer is viscous
10 parts of soil, 15 parts of graphene, 5 parts of ceramic particles, 10 parts of nano silica and 4 parts of carbon black.
(2) filler is placed at subzero 20 DEG C and freezes 4h；Filler taking-up after freezing is put into milling apparatus and is carried out
Grinding grinds 30min, carries out magnetization treatment in process of lapping.
(3) resin is divided into two parts, a portion accounts for the 1/3 of resin total amount；A part first is added toward milling apparatus
Resin grinds 6min together with filler；Levelling agent is added, curing agent grinds 4min together；Pigment is added and grinds 5min together；Most
Residual resin is added afterwards and grinds 9min, obtains mixed-powder.
(4) mixed-powder is added to double screw extruder melting extrusion, pressure roller tabletting, the control of I area's temperature of extruder exists
90-95 DEG C, II area's temperature of extruder is controlled at 108-115 DEG C；
(5) material obtained in step (4) is added in flour mill clay into power, the screen to filtrate, obtain powdery paints；
The revolving speed that owner grinds that is milled is 40-50r/min, and the revolving speed of flour mill pair mill is 20-30r/min, and sieve is 180-200 mesh.
Embodiment 3
Present embodiment discloses a kind of building materials powdery paints, the raw material including following mass fraction: 52 parts of epoxy resin,
35 parts of alkyd resin, 25 parts of polyethersulfone resin, 22 parts of pigment, 16 parts of filler, 0.6 part of levelling agent, 12 parts of curing agent.Filler includes
The raw material of following mass fraction: 8 parts of nanoclay, 16 parts of graphene, 6 parts of ceramic particles, 12 parts of nano silica and
4 parts of carbon black.Wherein pigment includes organic pigment and inorganic pigment, and organic pigment selects phthalocyanine blue and phthalocyanine green, inorganic pigment choosing
Use iron oxide yellow.
A kind of preparation method of above-mentioned building materials powdery paints, comprising the following steps:
(1) ingredient: preparing the raw material of following mass fraction, and 52 parts of epoxy resin, 35 parts of alkyd resin, polyethersulfone resin 25
Part, 22 parts of pigment, 16 parts of filler, 0.6 part of levelling agent, 12 parts of curing agent.Filler includes the raw material of following mass fraction: nanometer is viscous
8 parts of soil, 16 parts of graphene, 6 parts of ceramic particles, 12 parts of nano silica and 4 parts of carbon black.
(2) filler is placed at subzero 18 DEG C and freezes 5h；Filler taking-up after freezing is put into milling apparatus and is carried out
Grinding grinds 35min, carries out magnetization treatment in process of lapping.
(3) resin is divided into two parts, a portion accounts for the 1/4 of resin total amount；A part first is added toward milling apparatus
Resin grinds 5min together with filler；Levelling agent is added, curing agent grinds 5min together；Pigment is added and grinds 5min together；Most
Residual resin is added afterwards and grinds 9min, obtains mixed-powder.
(4) mixed-powder is added to double screw extruder melting extrusion, pressure roller tabletting, the control of I area's temperature of extruder exists
80-90 DEG C, II area's temperature of extruder is controlled at 100-110 DEG C.
(5) material obtained in step (4) is added in flour mill clay into power, the screen to filtrate, obtain powdery paints；
The revolving speed that owner grinds that is milled is 40-50r/min, and the revolving speed of flour mill pair mill is 20-30r/min, and sieve is 180-200 mesh.
Comparative example 1
Comparative example 1 the difference from embodiment 1 is that: be added without carbon black in this comparative example raw material.
Comparative example 2
Comparative example 2 the difference from embodiment 1 is that: be added without ceramic particles in this comparative example raw material.
Comparative example 3
Comparative example 3 the difference from embodiment 1 is that: be added without graphene in this comparative example raw material.
Comparative example 4
Comparative example 4 the difference from embodiment 1 is that: be added without graphene and ceramic particles in this comparative example raw material.
Comparative example 5
Comparative example 5 the difference from embodiment 1 is that: in this comparative example preparation step (2) not to filler carry out freezing processing.
It is formed to the powdery paints being prepared in embodiment 1- embodiment 3, comparative example 1-4 and by above-mentioned powdery paints
Coating tested, obtained data are as shown in table 1:
Table 1
Illustrate:
1,0 grade, 1 grade, 2 grades, 3 grades of powder storing estimation of stability point, 0 grade indicates without any change；1 grade indicates slight
Agglomeration, the agglomeration of powder easily crushes；2 grades indicate that heavier agglomeration, the agglomeration of powder need to be pressed with hand by crushing；3 grades of tables
Show that agglomeration is quite serious, the agglomeration of powder needs to be crushed with mechanical force, and the agglomeration of powder need to be pressed with hand by crushing.
2, about infiltrative index, the permeability of powdery paints is higher, and score is higher.
Conclusion:
1, according to the data of embodiment 1-3 in table 1 it is found that the powdery paints storage stability of the present patent application is good, adheres to
Power good (1 grade of adhesive force <), excellent in cushion effect, corrosion resistance and good, can be very good to meet actual demand.
2, embodiment 1 is compared with the data of comparative example 1, coating gloss, impact strength in comparative example 1,
Charcoal is added it may be concluded that carbon black has the coloring and anti-ultraviolet performance for improving product in the decline of the performances such as resistance to ag(e)ing
The black ultraviolet light that can weaken acts on coating, delaying aging.The cooperation such as carbon black and nanoclay, nano silica, additionally it is possible to
The static mechanical property for enhancing coating, improves thermal stability, the heat-resistant air aging property of coating.
3, embodiment 1 and the data of comparative example 2 are compared, coating impact strength, acid resistance in comparative example 2,
The decline of the performances such as corrosion resistance, it can be inferred that: ceramic particles, which are added, can obviously improve the mechanical resistant impact of coating
Etc. performances.
4, embodiment 1 and the data of comparative example 3 being compared, the coating corrosion resistance in comparative example 3 is substantially reduced, by
This can obviously improve the corrosion resistance of coating it may be concluded that graphene is added.
5, comparing embodiment 1 and comparative example 4, comparative example 2 and comparative example 4, the data of comparative example 3 and comparative example 4, comparative example
The corrosion rate of 4 floating coats is apparently higher than embodiment 1, be also apparently higher than comparative example 2, in comparative example 3 test piece corrosion rate, by
This deducibility: graphene and ceramic particles are used in compounding the corrosion resistance for being conducive to improve coating, and graphene and gold
Belonging to the simple superposition of ceramic particle compounding and not both corrosion resistance, graphene and ceramic particles have synergistic effect,
The corrosion resistance of coating can be significantly improved.
6, the properties of the data of comparative example 1 and comparative example 5, the coating in comparative example 5 are obviously below implementation
The coating of example 1 is conducive to the crushing of filler it follows that grinding after cryogenic freezing to filler, makes the effect of grinding more
Good, filler can be preferably dispersed in material.
Claims (7)
1. a kind of building materials powdery paints, it is characterised in that: the raw material including following mass fraction: 40-62 parts of epoxy resin, gathering
30-48 parts of rouge resin, 15-28 parts of polyethersulfone resin, 16-30 parts of pigment, 8-18 parts of filler, 0.5-1 parts of levelling agent, curing agent 4-
12 parts；Filler includes nanoclay, graphene, ceramic particles, nano silica and carbon black.
2. a kind of building materials powdery paints according to claim 1, it is characterised in that: filler includes following mass fraction
Raw material: 6-10 parts of nanoclay, 10-16 parts of graphene, 4-6 parts of ceramic particles, 8-12 parts of nano silica and carbon black
2-5 parts.
3. a kind of building materials powdery paints according to claim 1, it is characterised in that: pigment includes organic pigment and inorganic
Pigment, organic pigment are one or more of phthalocyanine blue, phthalocyanine green, bright red, permanent yellow, and inorganic pigment is iron oxide red, oxygen
Change one or more of iron oxide yellow, iron oxide black.
4. a kind of building materials powdery paints according to claim 2, it is characterised in that: the original including following mass fraction
Material: 50-58 parts of epoxy resin, 35-40 parts of alkyd resin, 20-25 parts of polyethersulfone resin, 18-24 parts of pigment, 15-18 parts of filler,
0.5-0.8 parts of levelling agent, 8-12 parts of curing agent；Filler includes the raw material of following mass fraction: 8-10 parts of nanoclay, graphene
13-16 parts, 4-6 parts of ceramic particles, 10-12 parts of nano silica and 3-4 parts of carbon black.
5. a kind of preparation method of building materials powdery paints, it is characterised in that: the following steps are included:
(1) ingredient: preparing the raw material of following mass fraction, and 40-62 parts of epoxy resin, 30-48 parts of alkyd resin, polyethersulfone resin
15-28 parts, 16-30 parts of pigment, 8-18 parts of filler, 0.5-1 parts of levelling agent, 4-12 parts of curing agent；Wherein filler includes following matter
Measure the raw material of number: 6-10 parts of nanoclay, 10-16 parts of graphene, 4-6 parts of ceramic particles, nano silica 8-12
Part and carbon black 2-5 parts；
(2) filler is placed at subzero 10-20 DEG C and freezes 3-5h；Filler taking-up after freezing is put into milling apparatus and is carried out
Grinding grinds 20-40min, carries out magnetization treatment in process of lapping；
(3) remaining raw material is added and grinds 15-25min together, obtains mixed-powder；
(4) mixed-powder is added to double screw extruder melting extrusion, pressure roller tabletting；
(5) material obtained in step (4) is added in flour mill clay into power, the screen to filtrate, obtain powdery paints.
6. a kind of preparation method of building materials powdery paints according to claim 5, it is characterised in that: the step (3)
In, resin is divided into two parts, a portion accounts for the 1/4-2/5 of resin total amount；A part of resin first is added toward milling apparatus
4-6min is ground together；Levelling agent is added, curing agent grinds 3-5min together；Pigment is added and grinds 3-5min together；Finally plus
Enter residual resin grinding 5-9min.
7. a kind of preparation method of building materials powdery paints according to claim 6, it is characterised in that: the main mill of flour mill
Revolving speed is 40-50r/min, and the secondary mill revolving speed of flour mill is 20-30r/min, and sieve is 180-200 mesh.
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