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CN115109470A - Preparation method for compounding high-pigment-volume coating and zinc powder - Google Patents

Preparation method for compounding high-pigment-volume coating and zinc powder Download PDF

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Publication number
CN115109470A
CN115109470A CN202210646215.5A CN202210646215A CN115109470A CN 115109470 A CN115109470 A CN 115109470A CN 202210646215 A CN202210646215 A CN 202210646215A CN 115109470 A CN115109470 A CN 115109470A
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CN
China
Prior art keywords
stirring
zinc powder
pigment
gear
component
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210646215.5A
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Chinese (zh)
Inventor
朱嘉
吴瑞浪
陈国清
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Hubei Baster Technoogy Co ltd
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Hubei Baster Technoogy Co ltd
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Priority to CN202210646215.5A priority Critical patent/CN115109470A/en
Publication of CN115109470A publication Critical patent/CN115109470A/en
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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
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/75—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • 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
    • C09D5/10—Anti-corrosive paints containing metal dust
    • C09D5/106—Anti-corrosive paints containing metal dust containing Zn
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/80—Processes for incorporating ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/30—Mixing paints or paint ingredients, e.g. pigments, dyes, colours, lacquers or enamel
    • 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
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0893—Zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

The invention discloses a preparation method for compounding a high pigment volume coating and zinc powder, which comprises a component A and a component B, and comprises the following preparation steps: s1, preparing raw materials, namely taking a base material, a pigment, an auxiliary agent, zinc powder and deionized water for later use; s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole, and starting a motor to drive a stirring component to stir for 20min to obtain a component A; s3, primary stirring, namely putting the pigment into a first discharge bin, putting the zinc powder into a second discharge bin, starting a motor again, driving a material distribution device to intermittently discharge the pigment and the zinc powder, and simultaneously operating the stirring assemblies to perform primary stirring; and S4, stirring at high speed, adjusting the rotating speed of a motor when the pigment and the zinc powder are completely put into a stirring barrel, driving a stirring component to rotate at high speed for 40min, standing and sieving to obtain a component B. The coating provided by the invention has the advantages of uniform distribution of components and better performance.

Description

Preparation method for compounding high-pigment-volume coating and zinc powder
Technical Field
The invention belongs to the field of paint preparation, and particularly relates to a preparation method for compounding a high-pigment-volume paint and zinc powder.
Background
The coating is traditionally named as paint in China. The coating is a continuous film which is coated on the surface of an object to be protected or decorated and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliaries and using organic solvent or water. The special requirements of building, industry and other fields on color and luster can be met by changing the volume concentration of the pigment.
Pigment Volume Concentration (PVC) refers to the ratio of the volume of pigment and filler in the coating to the total volume of all non-volatile components in the formulation, including the solid components, pigments and fillers, etc. in the synthetic resin emulsion, i.e.: PVC is the volume of pigments and fillers/(volume of pigments and fillers + volume of solid base) × 100%. Because the purpose of the paint is different from the environment, besides the bright paint, the paint also needs to provide a variety with the same gloss under semi-gloss and non-gloss. The paint with the gloss of 30-70 percent and the pigment volume concentration of 35-45 percent is called semi-gloss paint, the paint with the gloss of less than 30 percent and the pigment volume concentration of more than 45 percent is called matt paint, and is also called flat or matte paint.
The high pigment volume coating is also called economic coating, is a main variety of the internal wall coating in China, and has the largest dosage in various coating varieties. However, when the coating protection is performed on a metal object, the coating is required to have high corrosion resistance, and zinc powder particles can be in close contact with the surface of steel to play an electrochemical cathode protection role, so that the preparation method for compounding the high-pigment volume coating and the zinc powder is provided for the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a preparation method for compounding a high pigment volume coating and zinc powder, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method for compounding a high pigment volume coating and zinc powder comprises a component A and a component B, and comprises the following preparation steps:
s1, preparing raw materials, namely taking 80-100 parts of base materials, 65-80 parts of pigments, 5-10 parts of auxiliaries, 10-15 parts of zinc powder and 40-50 parts of deionized water for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole, starting a motor to drive a stirring component to stir for 20min, and discharging from a discharging hole to obtain a component A;
s3, primary stirring, namely putting the pigment into a first discharge bin, putting the zinc powder into a second discharge bin, starting a motor again, driving a material distribution device to intermittently discharge the pigment and the zinc powder, and simultaneously operating the stirring assemblies to perform primary stirring;
and S4, stirring at high speed, adjusting the rotating speed of a motor when the pigment and the zinc powder are completely put into a stirring barrel, driving a stirring component to rotate at high speed for 40min, standing and sieving to obtain a component B.
As a still further scheme of the invention: in step S1, the base material is styrene-acrylate emulsion, the pigment is one of titanium dioxide, talc powder, kaolin, a mixture of titanium dioxide and talc powder, a mixture of titanium dioxide and kaolin, or a mixture of titanium dioxide, talc powder and kaolin, and the auxiliary agent includes a dispersant, a defoamer and a coupling agent.
Titanium dioxide, namely titanium dioxide powder, has the main function of covering the ground color, is the whitest pigment known at present, is an important pigment in white paint, and can make the paint smoother due to the characteristics of certain dispersion and material bonding of the titanium dioxide; the talcum powder can improve the precipitability of the coating, the mechanical force of a coating film and the recoatability; kaolin belongs to a common filler of the coating, and has the following functions in the coating: the thickness of the paint film is increased, so that the paint film is more plump and firm, the wear resistance and the durability are improved, the optical performance of the paint is adjusted, the appearance of the paint film is changed, the paint film is used as a filler in the paint, the resin consumption is reduced, the production cost is reduced, and the paint film plays a role in assisting the chemical performance of the paint film, such as strengthening the rust resistance, the flame retardance and the like. The invention can adopt titanium dioxide, talcum powder and kaolin as the pigment individually, and also can adopt the mixture thereof to prepare the paint with high pigment volume compounded with zinc powder.
As a still further scheme of the invention: the weight ratio of the dispersing agent to the defoaming agent to the coupling agent in the auxiliary agent is 3:2: 2.
As a still further scheme of the invention: in step S2, the stirring speed is 200r/min, and the room temperature environment is maintained.
The rotating speed of the step is relatively low, and the base material, the auxiliary agent and the deionized water are only fully mixed and dissolved, so that the problem that the performance of the coating is influenced due to insufficient dissolution in the preparation of the coating is avoided.
As a still further scheme of the invention: in step S3, pigment and zinc powder are fed simultaneously under the control of a feed divider, and the feeding speed ratio is 2: 1.
Through feed divider's control, make pigment and zinc powder clearance unloading, stir the subassembly simultaneously and continuously move, make the mixture of pigment and zinc powder more even, avoid pigment or zinc powder to attach to one group, lead to subsequent stirring inhomogeneous.
As a still further scheme of the invention: in step S4, the rotation speed of the stirring component is 800-1000r/min, and the mesh number is 80-120 meshes.
As a still further scheme of the invention: dispersing device include the agitator and cover and in lid on the agitator, the inside of agitator is provided with the stirring subassembly, the stirring subassembly including install in motor on the lid, with motor output shaft's (mixing) shaft, be fixed in the first stirring paddle leaf at both ends about the (mixing) shaft, the (mixing) shaft runs through stretch into behind the lid in the agitator, two first stirring paddle leaf all is located in the agitator, be provided with the first feed inlet that is used for carrying matrix material, deionized water and auxiliary agent on the lid, be used for carrying the second feed inlet of pigment and be used for carrying the third feed inlet of zinc powder, the discharge gate has been seted up to all sides bottom of agitator.
As a still further scheme of the invention: two be provided with second stirring paddle between the first stirring paddle, second stirring paddle center is fixed with first fixed axle, first fixed axle through connection has first gear, first gear engagement is connected with the second gear just first gear with the second gear is the slope and connects, the top side parallel arrangement of second gear has the connecting rod, the both ends of connecting rod respectively with the (mixing) shaft reaches first fixed axle runs through the one end fixed connection of first gear, the (mixing) shaft runs through the center of second gear.
Specifically, at the (mixing) shaft rotation in-process, first stirring paddle leaf carries out high-speed stirring to coating, simultaneously because first gear is the meshing connected mode of slope with the second gear, and first gear is irregular along the bearing of second gear operation, and then drives second stirring paddle leaf and carry out the secondary stirring to coating to form the turbulent flow, make each component distribution more even in the coating.
As a still further scheme of the invention: a third gear penetrates through one end, located on the top side of the cover body, of the stirring shaft, fourth gears are symmetrically meshed and connected to two sides of the third gear, a second fixed shaft penetrates through the centers of the two fourth gears, and a material distributing device is connected to the second fixed shaft;
the material distributing device comprises a first connecting rod sleeved on the second fixed shaft, a second connecting rod rotatably connected with one end of the first connecting rod far away from the second fixed shaft, and a material distributing disc interactively matched with the second connecting rod, the distributing tray is of a cross structure and comprises four convex parts and four concave parts which are arranged at intervals, the bottom sides of the convex parts are provided with cross sliding grooves, one end of the second connecting rod, which is far away from the first connecting rod, is fixedly provided with a sliding block which is in sliding fit with the cross sliding groove, the second feed inlet and the second feed inlet are symmetrically arranged at two sides of the fourth gear, and the second feed inlet are both provided with openings for the lug bosses to pass through, the top of second feed inlet is provided with first blowing storehouse, the top of third feed inlet is provided with second blowing storehouse.
As a still further scheme of the invention: a plurality of shock absorbing members are fixed on the ground of the stirring barrel and are rubber blocks or springs, so that the shock generated in the stirring process of the stirring barrel is reduced through the shock absorbing members, and the damage to the device is reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, titanium dioxide, talcum powder and kaolin are used as pigments, and the titanium dioxide has certain characteristics of dispersing and bonding materials, so that the coating is smoother; the talcum powder can improve the precipitability of the coating, the mechanical force of a coating film and the recoatability; kaolin can increase the thickness of a paint film, so that the paint film is more plump and firm, the wear resistance and durability are improved, the optical performance of the paint is adjusted, the appearance of the paint film is changed, the kaolin is used as a filler in the paint, the resin dosage is reduced, the production cost is reduced, and the kaolin plays a role in assisting the chemical performance of the paint film, such as enhancing the rust resistance and the flame retardance;
2. according to the invention, through a plurality of stirring processes, the base material and the deionized water are fully mixed and dissolved, so that the problem that the performance of the coating is influenced due to insufficient dissolution in the preparation of the coating is avoided; the pigment and the zinc powder are fed in a clearance way under the control of the material distributing device, and meanwhile, the stirring assembly continuously operates, so that the pigment and the zinc powder are mixed more uniformly, and the pigment or the zinc powder is prevented from being fed in sequence and attached to one group to cause subsequent uneven stirring; after the pigment and the zinc powder are fed, the paint is stirred strongly, so that the components of the paint are uniformly distributed and the performance is better;
3. according to the invention, the first stirring blade and the second stirring blade are arranged, so that the first stirring blade can stir the coating at a high speed in the rotation process of the stirring shaft, and meanwhile, because the first gear and the second gear are in an inclined meshing connection mode, the first gear irregularly rotates along a bearing of the second gear, so that the second stirring blade is driven to stir the coating for the second time, and all components in the coating are more uniformly distributed; through the symmetrically arranged material distribution devices, the second connecting rod is in sliding fit with the cross sliding chute at the bottom side of the material distribution disc, and the material distribution disc is provided with four convex parts and four concave parts at intervals, so that the intermittent blanking of pigment and zinc powder is realized.
Drawings
To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a flow chart of a method provided by an embodiment of the present invention;
FIG. 2 is a view showing an appearance structure of a dispersing apparatus according to an embodiment of the present invention;
FIG. 3 is a view showing an internal structure of a dispersing apparatus according to an embodiment of the present invention;
FIG. 4 is an interior elevational view of a dispersion apparatus provided by an embodiment of the invention;
FIG. 5 is an enlarged view A of FIG. 2;
FIG. 6 is a structural diagram of a material separating device provided in an embodiment of the invention;
FIG. 7 is a bottom side view of the dispenser in a closed position according to an embodiment of the invention;
fig. 8 is a bottom side view of the feed divider in an open position as provided by embodiments of the present invention.
In the figure: 1. a stirring barrel; 2. a cover body; 3. a stirring assembly; 31. a motor; 32. a stirring shaft; 33. a first stirring blade; 34. a second gear; 35. a second stirring blade; 36. a first fixed shaft; 37. a first gear; 38. a connecting rod; 39. a third gear; 310. a fourth gear; 4. a material distributing device; 41. a first link; 42. a second link; 43. distributing disks; 431. a boss portion; 432. a recessed portion; 433. a cross-shaped chute; 5. a first feed port; 6. a second feed port; 7. a third feed inlet; 8. a second discharge bin; 9. a first discharge bin; 10. a discharge port; 11. a shock absorbing member; 12. a second stationary shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, preparing raw materials, namely taking 8kg of styrene-acrylate emulsion, 6.5kg of titanium dioxide-talcum powder-kaolin mixture, 0.5kg of auxiliary agent, 1kg of zinc powder and 4L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging the mixture from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 800r/min, standing and sieving by a sieve of 80 meshes to obtain the component B.
Preferably, the dispersing device includes an agitator 1 and a cover 2 on the agitator 1, the inside of the agitator 1 is provided with a stirring assembly 3, the stirring assembly 3 includes a motor 31 installed on the cover 2, a stirring shaft 32 connected with an output shaft of the motor 31, first stirring blades 33 fixed at the upper and lower ends of the stirring shaft 32, the stirring shaft 32 penetrates through the cover 2 and then extends into the agitator 1, the two first stirring blades 33 are located in the agitator 1, the cover 2 is provided with a first feed inlet 5 for conveying a base material, deionized water and an auxiliary agent, a second feed inlet 6 for conveying a pigment and a third feed inlet 7 for conveying zinc powder, and a discharge outlet 10 is opened at the bottom end of the circumferential side of the agitator 1.
Preferably, a second stirring blade 35 is arranged between the two first stirring blades 33, a first fixed shaft 36 is fixed at the center of the second stirring blade 35, the first fixed shaft 36 is connected with a first gear 37 in a penetrating manner, the first gear 37 is connected with a second gear 34 in a meshing manner, the first gear 37 is connected with the second gear 34 in an inclined manner, a connecting rod 38 is arranged in parallel on the top side of the second gear 34, two ends of the connecting rod 38 are fixedly connected with one end of the stirring shaft 32 and one end of the first fixed shaft 36, which penetrate through the first gear 37, respectively, and the stirring shaft 32 penetrates through the center of the second gear 34.
Preferably, a third gear 39 penetrates through one end of the stirring shaft 32, which is located at the top side of the cover body 2, the two sides of the third gear 39 are symmetrically engaged and connected with fourth gears 310, a second fixed shaft 12 penetrates through the centers of the two fourth gears 310, and the second fixed shaft 12 is connected with a material distribution device 4;
preferably, the material distributing device 4 includes a first connecting rod 41 sleeved on the second fixing shaft 12, a second connecting rod 42 rotatably connected with one end of the first connecting rod 41 far away from the second fixing shaft 12 and a material distributing disc 43 interactively matched with the second connecting rod 42, the material distributing disc 43 is in a cross structure and comprises four protrusions 431 and a recess 432 arranged at intervals, a cross sliding groove 433 is formed in the bottom side of each protrusion 431, a sliding block is fixedly arranged at one end of the second connecting rod 42 far away from the first connecting rod 41, the sliding block is in sliding fit with the cross sliding groove 433, the second feed port 6 and the second feed port 6 are symmetrically arranged on two sides of the fourth gear 310, openings used for the protrusions 431 to pass through are formed in the second feed port 6 and the second feed port 6, a first material placing bin 9 is arranged at the top of the second feed port 6, and a second material placing bin 8 is arranged at the top of the third feed port 7.
Preferably, a plurality of shock absorbing members 11 are fixed on the ground of the mixing tank 1, and the shock absorbing members 11 are rubber blocks or springs.
The working principle of the dispersing device is as follows: the base material, the auxiliary agent and the deionized water are conveyed into a stirring barrel 1 through a first feed port 5, the pigment is put into a first discharge bin 9, the zinc powder is put into a second discharge bin 8, the discharge of the second feed port 6 and a third feed port 7 is controlled through a material distribution device 4, the caliber of the second discharge port is larger than that of the third discharge port so as to meet the requirement that the discharge speed ratio of the pigment and the zinc powder is 2:1, a stirring shaft 32 drives a third gear 39 and further drives a fourth gear 310 to rotate under the driving of a motor 31, when a first connecting rod 41 is closest to a material distribution disc 43, the first connecting rod 41, a second connecting rod 42 and a cross sliding groove 433 are positioned on the same straight line, a sliding block is positioned at one end, which is farthest away from the first connecting rod 41, a protruding part 431 of the material distribution disc 43 is positioned at the opening parts of the first feed port 5 and the second feed port 6, the discharge ports of the first feed port 5 and the second feed port 6 are closed, when the fourth gear 310 continues to rotate, the sliding block drives the distributing disc 43 to rotate, so that the concave part 432 of the distributing disc 43 is positioned at the first feeding hole 5 and the second feeding hole 6, so that pigment and zinc powder can be discharged, when the first connecting rod 41 runs to the farthest position away from the separating disc, the sliding block is positioned at the center of the cross sliding groove 433, at the moment, the concave part 432 is completely positioned at the first feeding hole 5 and the second feeding hole 6, the sliding block continues to rotate, the first connecting rod 41 pushes the sliding block to the end, which is farthest away from the first connecting rod 41, of the cross sliding groove 433, and the steps are repeated so as to realize the opening and closing of the first feeding hole 5 and the second feeding hole 6, so that pigment and zinc powder can be discharged intermittently;
meanwhile, the stirring shaft 32 drives the first stirring blade 33 and the second stirring blade 35 to stir, and under the driving of the second gear 34, the first gear 37 rotates irregularly along the peripheral side of the second gear 34, so that the second stirring blade 35 stirs the middle layer of the coating, and all components of the coating are uniformly distributed, and the performance is improved.
Example 2
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of titanium dioxide-talcum powder-kaolin mixture, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 at a speed of 200r/min to stir for 20min at room temperature, and discharging the mixture from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, after the pigment and the zinc powder are completely placed in the stirring barrel 1, adjusting the rotating speed of the motor 31, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a 80-mesh sieve to obtain the component B.
Example 3
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 10kg of styrene-acrylate emulsion, 8kg of titanium dioxide-talcum powder-kaolin mixture, 1kg of auxiliary agent, 1.5kg of zinc powder and 5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 at a speed of 200r/min to stir for 20min at room temperature, and discharging the mixture from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 1000r/min, standing and sieving by a 120-mesh sieve to obtain the component B.
Example 4
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of titanium dioxide, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging the mixture from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a sieve of 100 meshes to obtain the component B.
Example 5
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of talcum powder, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a sieve of 100 meshes to obtain the component B.
Example 6
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of kaolin, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a sieve of 100 meshes to obtain the component B.
Example 7
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of titanium dioxide-talcum powder mixture, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, namely putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to intermittently discharge the pigment and the zinc powder, simultaneously operating a stirring component 3 for the first time, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharge speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feed port 6 and a third feed port 7;
and S4, stirring at a high speed, after the pigment and the zinc powder are completely placed in the stirring barrel 1, adjusting the rotating speed of the motor 31, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a sieve of 100 meshes to obtain the component B.
Example 8
A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising the following preparation steps:
s1, taking 9kg of styrene-acrylate emulsion, 7kg of titanium dioxide-kaolin mixture, 0.8kg of auxiliary agent, 1.2kg of zinc powder and 4.5L of deionized water, wherein the auxiliary agent comprises a dispersing agent, a defoaming agent and a coupling agent, and the weight ratio of the dispersing agent to the defoaming agent to the coupling agent is 3:2:2 for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole 5, starting a motor 31, driving a stirring component 3 to stir for 20min at the room temperature at the speed of 200r/min, and discharging from a discharging hole 10 to obtain a component A;
s3, stirring for the first time, putting the pigment into a first discharging bin 9, putting the zinc powder into a second discharging bin 8, starting a motor 31 again, driving a material distribution device 4 to perform intermittent discharging on the pigment and the zinc powder, simultaneously operating a stirring assembly 3 simultaneously, performing the first stirring, and simultaneously discharging the pigment and the zinc powder under the control of the material distribution device 4 and at a discharging speed ratio of 2:1 by setting the sizes of the material distribution device 4, a second feeding hole 6 and a third feeding hole 7;
and S4, stirring at a high speed, adjusting the rotating speed of the motor 31 after the pigment and the zinc powder are completely put into the stirring barrel 1, driving the stirring component 3 to rotate at a high speed for 40min at the rotating speed of 900r/min, standing and sieving by a sieve of 100 meshes to obtain the component B.
The foregoing is merely illustrative and explanatory of the present invention and various modifications, additions or substitutions may be made to the specific embodiments described by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (10)

1. A preparation method for compounding a high pigment volume coating and zinc powder is characterized by comprising a component A and a component B, and the preparation steps are as follows:
s1, preparing raw materials, namely taking 80-100 parts of base materials, 65-80 parts of pigments, 5-10 parts of auxiliaries, 10-15 parts of zinc powder and 40-50 parts of deionized water for later use;
s2, stirring the auxiliary agent, putting the base material, the deionized water and the auxiliary agent into a dispersing device through a first feeding hole (5), starting a motor (31) to drive a stirring component (3) to stir for 20min, and discharging from a discharging hole to obtain a component A;
s3, primary stirring, namely putting the pigment into a first discharging bin (9), putting the zinc powder into a second discharging bin (8), starting a motor (31) again, driving a material distributing device (4) to intermittently discharge the pigment and the zinc powder, and simultaneously operating a stirring assembly (3) for primary stirring;
and S4, stirring at a high speed, adjusting the rotating speed of the motor (31) after the pigment and the zinc powder are completely put into the stirring barrel (1), driving the stirring component (3) to rotate at a high speed for 40min, standing and sieving to obtain the component B.
2. The method for preparing a composite of a high pigment volume coating and zinc powder as claimed in claim 1, wherein in step S1, the base material is styrene-acrylate emulsion, the pigment is one of titanium dioxide, talc, kaolin, a titanium dioxide-talc mixture, a titanium dioxide-kaolin mixture or a titanium dioxide-talc-kaolin mixture, and the auxiliary agent comprises a dispersant, a defoamer and a coupling agent.
3. The method for preparing a composite of a high pigment volume coating and zinc powder as claimed in claim 2, wherein the weight ratio of the dispersing agent, the defoaming agent and the coupling agent in the auxiliary agent is 3:2: 2.
4. The method of claim 1, wherein in step S2, the stirring speed is 200r/min, and the room temperature environment is maintained.
5. The method for preparing a composite of a high pigment volume coating and zinc powder as claimed in claim 1, wherein in step S3, the pigment and zinc powder are fed simultaneously under the control of the feed divider (4) at a feed rate ratio of 2: 1.
6. The method as claimed in claim 1, wherein in step S4, the rotation speed of the stirring assembly (3) is 800-1000r/min, and the mesh number is 80-120.
7. The preparation method of claim 1, wherein the dispersing device comprises a stirring barrel (1), a cover and a cover body (2) arranged on the stirring barrel (1), a stirring assembly (3) is arranged inside the stirring barrel (1), the stirring assembly (3) comprises a motor (31) arranged on the cover body (2), a stirring shaft (32) connected with an output shaft of the motor (31), and first stirring blades (33) fixed at the upper end and the lower end of the stirring shaft (32), the stirring shaft (32) penetrates through the cover body (2) and then extends into the stirring barrel (1), the two first stirring blades (33) are both positioned in the stirring barrel (1), and the cover body (2) is provided with a first feeding hole (5) for conveying a base material, deionized water and an auxiliary agent, A second feed inlet (6) for conveying pigment and a third feed inlet (7) for conveying zinc powder, wherein a discharge outlet (10) is formed in the bottom end of the circumferential side of the stirring barrel (1).
8. The method of claim 7, wherein the high pigment volume coating is compounded with zinc powder, it is characterized in that a second stirring blade (35) is arranged between the two first stirring blades (33), a first fixed shaft (36) is fixed at the center of the second stirring blade (35), a first gear (37) is connected with the first fixed shaft (36) in a penetrating way, the first gear (37) is connected with a second gear (34) in a meshing way, and the first gear (37) is connected with the second gear (34) in an inclined way, a connecting rod (38) is arranged on the top side of the second gear (34) in parallel, two ends of the connecting rod (38) are fixedly connected with the stirring shaft (32) and one end, penetrating through the first gear (37), of the first fixed shaft (36), and the stirring shaft (32) penetrates through the center of the second gear (34).
9. The preparation method of compounding the high pigment volume coating with the zinc powder as claimed in claim 7, wherein a third gear (39) penetrates through one end of the stirring shaft (32) on the top side of the cover body (2), fourth gears (310) are symmetrically engaged and connected to two sides of the third gear (39), a second fixed shaft (12) penetrates through the centers of the two fourth gears (310), and a material separating device (4) is connected to the second fixed shaft (12);
the material distribution device (4) comprises a first connecting rod (41) sleeved on the second fixed shaft (12), a second connecting rod (42) rotatably connected with one end, far away from the second fixed shaft (12), of the first connecting rod (41) and a material distribution disc (43) in interactive fit with the second connecting rod (42), the material distribution disc (43) is of a cross structure and comprises four protruding parts (431) and recessed parts (432) which are arranged at intervals, a cross sliding groove (433) is formed in the bottom side of each protruding part (431), a sliding block is fixedly arranged at one end, far away from the first connecting rod (41), of the second connecting rod (42) and is in sliding fit with the cross sliding grooves (433), the second feed ports (6) and the second feed ports (6) are symmetrically arranged on two sides of the fourth gear (310), and openings for the protruding parts (431) to pass through are formed in the second feed ports (6) and the second feed ports (6), the top of second feed inlet (6) is provided with first blowing storehouse (9), the top of third feed inlet (7) is provided with second blowing storehouse (8).
10. The preparation method of compounding high pigment volume paint and zinc powder as claimed in claim 7, wherein a plurality of shock absorbing members (11) are fixed on the bottom surface of the mixing tank (1), and the shock absorbing members (11) are rubber blocks or springs.
CN202210646215.5A 2022-06-08 2022-06-08 Preparation method for compounding high-pigment-volume coating and zinc powder Pending CN115109470A (en)

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Publication number Priority date Publication date Assignee Title
CN101525505A (en) * 2009-04-03 2009-09-09 河海大学 Watery zinc-aluminium heavy-duty coating in compounding squama shape and preparation method thereof
CN107163634A (en) * 2017-06-08 2017-09-15 重庆三峡油漆股份有限公司 Outer emulsification waterborne inorganic einc-rich primer
CN111247220A (en) * 2017-10-31 2020-06-05 中国涂料株式会社 Antirust coating composition and use thereof
CN114456626A (en) * 2022-02-22 2022-05-10 广州集泰化工股份有限公司 Water-based nano inorganic zinc-rich coating and preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101525505A (en) * 2009-04-03 2009-09-09 河海大学 Watery zinc-aluminium heavy-duty coating in compounding squama shape and preparation method thereof
CN107163634A (en) * 2017-06-08 2017-09-15 重庆三峡油漆股份有限公司 Outer emulsification waterborne inorganic einc-rich primer
CN111247220A (en) * 2017-10-31 2020-06-05 中国涂料株式会社 Antirust coating composition and use thereof
CN114456626A (en) * 2022-02-22 2022-05-10 广州集泰化工股份有限公司 Water-based nano inorganic zinc-rich coating and preparation method and application thereof

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