CN112175481A

CN112175481A - Water-based paint and preparation method thereof

Info

Publication number: CN112175481A
Application number: CN202011061978.0A
Authority: CN
Inventors: 梁亚正
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-05

Abstract

The invention discloses a water paint and a preparation method thereof, epoxy resin and water are mixed to prepare a mixture, then defoamer, filler, barium sulfate, aluminum tripolyphosphate, cobalt isooctanoate, anticorrosive agent and stabilizer are added into the mixture and uniformly stirred to obtain a mixture A, the mixture A is stood and then added with triethylamine and ammonia water and uniformly stirred to obtain a mixture B, and finally the mixture B is put into grinding and dispersing equipment for grinding and dispersing and filtering to obtain the water paint, the water paint not only has the physical shielding of the epoxy resin, but also has good anticorrosive effect due to the addition of the anticorrosive agent, the stability of a coating formed by the water paint is high, the grinding and dispersing equipment has good grinding effect, the fineness of the prepared water paint is high, the caking property of the water paint is improved, and the service life of the water paint is prolonged, the corrosion resistance effect is improved.

Description

Water-based paint and preparation method thereof

Technical Field

The invention relates to the field of coatings, and particularly relates to a water-based coating and a preparation method thereof.

Background

Metal plays a vital role in all aspects as an important material in modern industry, metal is exposed to air for a long time and is very easily corroded by chemical action and electrochemical action, and in order to protect steel from corrosion and prolong the service life of the steel, the anti-corrosion coating of the steel becomes the most economic and effective method. With the development of the coating industry and the coating process towards low pollution, the water-based coating is increasingly popular, the water-based coating reduces the harm and pollution to the environment, reduces the damage to the health of human bodies, reduces the production cost of the coating, is convenient for factories to take safety measures and transport, and is also convenient for cleaning tools. The safe, environment-friendly and nuisanceless green environment-friendly coating has the need of research and development and also has wide application prospect.

At present, from the aspect of corrosion resistance, a certain gap still exists between water-based coatings and solvent-based coatings, and at present, people mainly improve the coating performance from the aspects of optimization of resin, matching of resin and curing agent, non-toxic pigment and filler and the like. The addition of the anticorrosive material has a positive influence on the anticorrosive performance, but the effect is negative in the aspects of the cohesiveness of the coating, the comprehensive performance of the coating can be greatly improved by properly reducing the addition of the filler on the premise of ensuring the anticorrosive performance, and the existing water-based paint has poor stability, so that the water-based paint is easy to generate the phenomenon of layering or water diversion, is unstable in storage and has short service life.

Therefore, how to improve the corrosion resistance and stability of the existing water-based paint is the key point to be solved by the invention.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a water-based paint and a preparation method thereof: mixing epoxy resin and water to prepare a mixture, adding an antifoaming agent, a filler, barium sulfate, aluminum tripolyphosphate, cobalt iso-octoate, an anticorrosive agent and a stabilizer into the mixture, uniformly stirring to obtain a mixture A, standing the mixture A, adding triethylamine and ammonia water, uniformly stirring to obtain a mixture B, adding the mixture B into an inner cavity of a grinding cylinder from a feed inlet, feeding the mixture B into a grinding bin, starting a lifting motor, driving a transmission gear to rotate by the operation of the lifting motor, enabling a supporting vertical plate to move up and down on a sliding rail through a sliding block by meshing connection between a transmission gear and a rack, driving a grinding shaft to move up and down in the grinding bin, starting the grinding motor, driving three linkage shafts to rotate by the operation of the grinding motor through a driving gear and two driven gears, and driving three grinding shafts to rotate, reciprocate and the pivoted grinding shaft passes through the convex edge cooperation in bead and the grinding storehouse, grind mixture B, grind even mixture B under the extrusion of grinding shaft, discharge from the filtration pore, enter into to the conveyer pipe from the feed inlet through a hopper, start conveying motor, conveying motor operation drives conveying screw rotates, will grind even mixture B and carry forward and discharge to the collecting box through the discharging pipe in, obtain this water based paint, the problem that current water based paint's corrosion resisting property and stability can not be good enough is solved.

The purpose of the invention can be realized by the following technical scheme:

a water-based paint comprises the following components in parts by weight: 20-30 parts of epoxy resin, 17-23 parts of water, 1.25-1.5 parts of defoaming agent, 16-18 parts of filler, 16-20 parts of barium sulfate, 1.2-1.3 parts of ammonia water, 1.5-2 parts of triethylamine, 12-15 parts of aluminum tripolyphosphate, 1.3-1.5 parts of cobalt isooctanoate, 2.5-3 parts of corrosion inhibitor and 11-14 parts of stabilizer;

the water-based paint is prepared by the following steps:

the method comprises the following steps: mixing epoxy resin and water, and stirring for 20-30min at the temperature of 85-95 ℃ and the rotating speed of 400-500r/min to prepare a mixture;

step two: adding a defoaming agent, a filler, barium sulfate, aluminum tripolyphosphate, cobalt isooctanoate, an anticorrosive agent and a stabilizer into the mixture, and stirring for 30-50min at the temperature of 70-80 ℃ and the temperature of 100-;

step three: standing the mixture A for 1-3h, adding triethylamine and ammonia water, and stirring for 30-40min under the conditions that the temperature is 70-80 ℃ and the rotating speed is 700-800r/min to obtain a mixture B;

step four: adding the mixture B into an inner cavity of a grinding cylinder from a feed inlet of grinding dispersion equipment, and feeding the mixture B into a grinding bin;

step five: starting a lifting motor, driving a transmission gear to rotate by the operation of the lifting motor, and enabling a supporting vertical plate to move up and down on a sliding rail through a sliding block through the meshed connection between the transmission gear and a rack, so as to drive a grinding shaft to move up and down in a grinding bin;

step six: starting a grinding motor, wherein the grinding motor drives three linkage shafts to rotate through a driving gear and two driven gears so as to drive the three grinding shafts to rotate;

step seven: the grinding shaft which moves up and down and rotates is matched with the convex edge in the grinding bin through the convex edge to grind the mixture B;

step eight: and discharging the uniformly ground mixture B from the filter hole under the extrusion of the grinding shaft, entering the conveying pipe from the feed inlet through the discharge hopper, starting the conveying motor, driving the conveying screw rod to rotate by the operation of the conveying motor, and forward conveying the uniformly ground mixture B through the discharge pipe and discharging the mixture B into the collection box to obtain the water-based paint.

As a further scheme of the invention: the defoaming agent is one or a mixture of a plurality of polyethylene wax, n-butyl alcohol and tributyl phosphate in any proportion; the filler is one or a mixture of more of talcum powder, barite and mica in any proportion; the mass concentration of the ammonia water is 20-30 wt%; the corrosion inhibitor is cetyl trimethyl ammonium bromide and lanthanum citrate, and the mass ratio of the corrosion inhibitor to the lanthanum citrate is 1: 1-5 of a mixture; the stabilizer is one of ethylene glycol butyl ether and polyurethane.

As a further scheme of the invention: a preparation method of a water-based paint comprises the following steps:

As a further scheme of the invention: grind dispersion equipment and grind mechanism, installation base, conveyor motor, conveyer pipe, discharging pipe, collecting box, feed inlet, conveying screw including grinding mechanism, cooperation, the cooperation is ground the mechanism and is installed in the embedding of top axle center department of installation base, the top one side of installation base is installed and is ground the mechanism, conveyor motor is installed at the inner chamber top of installation base, conveying motor one end is connected with the conveyer pipe, the conveyer pipe is kept away from conveyor motor's one end bottom and is installed the discharging pipe, be provided with the collecting box under the discharging pipe, the collecting box is placed in the inner chamber of installation base, the one end that the conveyer pipe top is close conveyor motor is provided with the feed inlet, be provided with conveying screw in the inner chamber of conveyer pipe, conveying screw's one end is connected to on conveyor.

As a further scheme of the invention: the grinding mechanism comprises a mounting plate, a sliding rail, a sliding block, a lifting motor, a rack, a transmission gear, a supporting vertical plate, a grinding motor, an L-shaped fixing plate, a driving gear, a supporting transverse plate, a driven gear, a bearing sleeve, a linkage shaft and a grinding shaft, wherein the bottom end of the mounting plate is mounted on a mounting base, the sliding rail is mounted on both sides of one side surface of the mounting plate, the sliding block is connected on the sliding rail in a sliding manner, the two sliding blocks are mounted on both sides of one side surface of the supporting vertical plate, the rack is mounted between the two sliding blocks on one side surface of the supporting vertical plate, the rack is meshed with the transmission gear, the transmission gear is sleeved on an output shaft of the lifting motor, the lifting motor is mounted at the top of the other side surface of the mounting plate, the L, the output shaft of grinding motor runs through L shape fixed plate and cup joints and installs the driving gear, support the riser and install the support diaphragm in the bottom of the side of installation L shape fixed plate, it installs three bearing housing, three to run through on the support diaphragm the bearing housing is "article" style of calligraphy and distributes, and is three the universal driving shaft is all rotated to the inside of bearing housing, wherein two driven gear, another have all been cup jointed on the top of universal driving shaft has cup jointed the driving gear, the driving gear also cup jointed on the output shaft of grinding motor, connect through the cog belt transmission between driving gear and two driven gear, it is three the grinding shaft is all installed to the bottom of universal driving shaft, the last radian of grinding shaft is provided with a plurality of bead on the outer wall.

As a further scheme of the invention: the cooperation grinding mechanism includes grinding vessel, goes out the hopper, wears the shaft hole, grinds storehouse, filtration pore, protruding sword, filter, charge door, the hopper is installed out to the bottom of grinding vessel, the bottom that goes out the hopper communicates to the feed inlet, three shaft hole and charge door have been worn to the top of grinding vessel has been seted up, three grinding storehouse has been seted up to the inner chamber bottom of grinding vessel, and is three grinding storehouse is just respectively to three shaft hole of wearing, the internal diameter that grinds the storehouse is greater than the aperture that wears the shaft hole, it sets up on the filter to grind the storehouse, the filter is installed inside the junction of grinding vessel and play hopper, a plurality of filtration pore has been seted up to the filter bottom the inner chamber that grinds the storehouse, it is provided with a plurality of protruding sword to wait the radian on the inner wall in.

As a further scheme of the invention: the universal driving shaft penetrates through the shaft penetrating hole, and the grinding shaft and the grinding bin are matched components.

The invention has the beneficial effects that:

(1) the invention relates to a water paint and a preparation method thereof, which comprises the steps of mixing epoxy resin and water to prepare a mixture, adding an antifoaming agent, a filler, barium sulfate, aluminum tripolyphosphate, cobalt isooctanoate, an anticorrosive agent and a stabilizer into the mixture, uniformly stirring to obtain a mixture A, standing the mixture A, adding triethylamine and ammonia water, uniformly stirring to obtain a mixture B, grinding and dispersing the mixture B, and filtering to obtain the water paint, wherein the water paint prepared from the epoxy resin, the water, the antifoaming agent, the filler, the barium sulfate, the ammonia water, the triethylamine, the aluminum tripolyphosphate, the cobalt isooctanoate, the anticorrosive agent and the stabilizer not only has the physical shielding of the epoxy resin, but also avoids the local corrosion of metal due to the addition of the anticorrosive agent, thereby delaying the surface corrosion time of the metal and having good anticorrosive effect, the coating formed by the water-based paint has high stability, overcomes the defects of poor stability, nonuniform film coating and the like of the traditional paint by being mixed with various additives, has good acid and alkali resistance, and can be stored and transported for a long time;

(2) the invention relates to a water paint and a preparation method thereof, grinding and dispersing a mixture B by using grinding and dispersing equipment, adding the mixture B into an inner cavity of a grinding cylinder from a feed inlet, feeding the mixture B into a grinding bin, starting a lifting motor, driving a transmission gear to rotate by the operation of the lifting motor, driving three linkage shafts to rotate by the meshing connection between the transmission gear and a rack, enabling a supporting vertical plate to move up and down on a slide rail through a slide block, driving a grinding shaft to move up and down in the grinding bin, starting the grinding motor, driving the grinding motor to rotate through a driving gear and two driven gears, driving the three grinding shafts to rotate, matching the grinding shaft which moves up and down and rotates with a convex edge in the grinding bin through a convex edge, grinding the mixture B, extruding the uniformly ground mixture B by the grinding shafts, discharging the mixture B from a filter hole, feeding the mixture B into a conveying pipe from a feeding hole through a discharging hopper, starting a conveying motor, driving a conveying screw to rotate by the operation of the conveying motor, and conveying the uniformly ground mixture B forwards and discharging the mixture B into a collecting box through a discharging pipe to obtain the water-based paint; this grind dispersion equipment has realized through elevator motor and grinding motor that the grinding axle can also reciprocate when grinding the storehouse rotation, make the grinding axle grind the thorough of mixture B through the cooperation of bead and convex edge in grinding the storehouse, the even of dispersion, until mixture B can pass the filtration pore, then carry the discharge through conveying motor, this grind dispersion equipment's grinding effect is good, make the waterborne coating fineness of preparation high, the cohesiveness of this waterborne coating has been improved, thereby the life of this waterborne coating has been improved, improve its anticorrosive effect.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the structure of the grinding and dispersing apparatus of the present invention;

FIG. 2 is a schematic view showing the internal structure of a conveying motor according to the present invention;

FIG. 3 is a schematic view showing the internal structure of a duct according to the present invention;

FIG. 4 is a schematic view of the grinding mechanism of the present invention;

FIG. 5 is a connection view of the lift motor, the rack, the transmission gear and the mounting plate in the present invention;

FIG. 6 is a schematic view of the structure of the grinding shaft according to the present invention;

FIG. 7 is a schematic view of the structure of the cooperative grinding mechanism of the present invention;

FIG. 8 is a top view of the interior of the grinding cylinder of the present invention;

FIG. 9 is a top view of a grinding cartridge of the present invention;

FIG. 10 is a schematic view of the internal structure of the matched grinding mechanism of the present invention.

In the figure: 101. a grinding mechanism; 102. matching with a grinding mechanism; 103. installing a base; 104. a conveying motor; 105. a delivery pipe; 106. a discharge pipe; 107. a collection box; 108. a feed inlet; 109. a conveying screw; 110. mounting a plate; 111. a slide rail; 112. a slider; 113. a lifting motor; 114. a rack; 115. a transmission gear; 116. supporting a vertical plate; 117. grinding the motor; 118. an L-shaped fixing plate; 119. a driving gear; 120. supporting the transverse plate; 121. a driven gear; 122. a bearing housing; 123. a linkage shaft; 124. grinding the shaft; 125. a rib; 126. a grinding cylinder; 127. a discharge hopper; 128. a shaft hole is penetrated; 129. a grinding bin; 130. filtering holes; 131. a convex edge; 132. a filter plate; 133. a feed inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the embodiment is a water-based paint which comprises the following components in parts by weight: 20 parts of epoxy resin, 17 parts of water, 1.25 parts of defoaming agent, 16 parts of filler, 16 parts of barium sulfate, 1.2 parts of ammonia water, 1.5 parts of triethylamine, 12 parts of aluminum tripolyphosphate, 1.3 parts of cobalt isooctanoate, 2.5 parts of corrosion inhibitor and 11 parts of stabilizer;

the water-based paint is prepared by the following steps:

the method comprises the following steps: mixing epoxy resin and water, and stirring for 30min at the temperature of 90 ℃ and the rotating speed of 450r/min to prepare a mixture;

step two: adding a defoaming agent, a filler, barium sulfate, aluminum tripolyphosphate, cobalt isooctanoate, an anticorrosive agent and a stabilizer into the mixture, and stirring for 40min at 75 ℃ at 1000r/min to obtain a mixture A;

step three: standing the mixture A for 3h, adding triethylamine and ammonia water, and stirring for 40min at the temperature of 75 ℃ and the rotation speed of 750r/min to obtain a mixture B;

step four: grinding and dispersing the mixture B at the temperature of 30 ℃ and the rotating speed of 2500r/min, and filtering to obtain the water-based paint.

The defoaming agent is polyethylene wax; the filler is talcum powder; the mass concentration of the ammonia water is 20 wt%; the corrosion inhibitor is cetyl trimethyl ammonium bromide and lanthanum citrate, and the mass ratio of the corrosion inhibitor to the lanthanum citrate is 1: 1; the stabilizer is ethylene glycol butyl ether.

The performance of the water-based paint of the example 1 is detected, and the detection result is as follows: acid-resistant time 366h, alkali-resistant time 321 h; the suspension percentage was 88.7%.

Example 2:

the present embodiment is different from embodiment 1 in that:

a water-based paint comprises the following components in parts by weight: 25 parts of epoxy resin, 20 parts of water, 1.38 parts of defoaming agent, 17 parts of filler, 18 parts of barium sulfate, 1.25 parts of ammonia water, 1.75 parts of triethylamine, 13.5 parts of aluminum tripolyphosphate, 1.4 parts of cobalt isooctanoate, 2.8 parts of corrosion inhibitor and 12.5 parts of stabilizer;

the defoaming agent is tributyl phosphate; the filler is mica; the mass concentration of the ammonia water is 25 wt%; the corrosion inhibitor is cetyl trimethyl ammonium bromide and lanthanum citrate, and the mass ratio of the corrosion inhibitor to the lanthanum citrate is 1: 3; the stabilizer is ethylene glycol butyl ether.

The performance of the water-based paint of the example 2 is detected, and the detection result is as follows: acid resistance time 375h and alkali resistance time 334 h; the suspension percentage was 90.9%.

Example 3:

the present embodiment is different from embodiment 1 in that:

a water-based paint comprises the following components in parts by weight: 30 parts of epoxy resin, 23 parts of water, 1.5 parts of defoaming agent, 18 parts of filler, 20 parts of barium sulfate, 1.3 parts of ammonia water, 2 parts of triethylamine, 15 parts of aluminum tripolyphosphate, 1.5 parts of cobalt isooctanoate, 3 parts of corrosion inhibitor and 14 parts of stabilizer;

the defoaming agent is a mixture of polyethylene wax, n-butyl alcohol and tributyl phosphate in any proportion; the filler is a mixture of talcum powder, barite and mica in any proportion; the mass concentration of the ammonia water is 30 wt%; the corrosion inhibitor is cetyl trimethyl ammonium bromide and lanthanum citrate, and the mass ratio of the corrosion inhibitor to the lanthanum citrate is 1: 5 with a mixture of; the stabilizer is polyurethane.

The performance of the water-based paint of the example 3 is detected, and the detection result is as follows: the acid resistance time is 383h, and the alkali resistance time is 345 h; the suspension percentage was 92.4%.

Experimental example:

and (3) testing acid and alkali resistance: the water-based paint was applied by brush coating on a Q195 steel test piece, dried and cured at 100 ℃ in accordance with the provisions of GB/T9274-1988, to give a coating thickness of 0.8. mu.m, and the coated Q195 steel test piece was tested under acid resistance test conditions of 20 ℃ and 5 wt% sulfuric acid solution and alkali resistance test conditions of 20 ℃ and 5 wt% sodium hydroxide solution.

Testing the suspension property: the suspension rate (%) is an index for characterizing the suspension property of the coating, and the suspension rate of the coating is measured by a measuring cylinder method: pouring the uniform coating into a 100mL measuring cylinder with a grinding plug, standing for 2 hours after the liquid level reaches 100mL scales, and measuring the volume of supernatant liquid on the upper layer of the measuring cylinder, wherein the suspension rate formula is as follows: the suspension percentage of the coating material was (100-clear solution volume) ÷ 100 × 100%, and the suspension percentage of the aqueous coating material after leaving it for 72 hours was measured.

Example 4:

referring to fig. 1-10, the grinding dispersion apparatus in this embodiment includes a grinding mechanism 101, a matching grinding mechanism 102, a mounting base 103, a conveying motor 104, a conveying pipe 105, a discharging pipe 106, a collecting box 107, a feeding port 108, and a conveying screw 109, the matching grinding mechanism 102 is embedded in the top axis of the mounting base 103, the grinding mechanism 101 is installed on one side of the top of the mounting base 103, the conveying motor 104 is installed on the top of the inner cavity of the mounting base 103, one end of the conveying motor 104 is connected to the conveying pipe 105, the discharging pipe 106 is installed on the bottom of the conveying pipe 105 far from the conveying motor 104, the collecting box 107 is disposed right below the discharging pipe 106, the collecting box 107 is disposed in the inner cavity of the mounting base 103, the feeding port 108 is disposed on the top of the conveying pipe 105 near the conveying motor 104, and the conveying screw 109 is disposed, one end of the conveying screw 109 is connected to an output shaft of the conveying motor 104.

The grinding mechanism 101 comprises a mounting plate 110, a slide rail 111, a slide block 112, a lifting motor 113, a rack 114, a transmission gear 115, a supporting vertical plate 116, a grinding motor 117, an L-shaped fixing plate 118, a driving gear 119, a supporting transverse plate 120, a driven gear 121, a bearing sleeve 122, a linkage shaft 123 and a grinding shaft 124, wherein the bottom end of the mounting plate 110 is mounted on a mounting base 103, the slide rail 111 is mounted on both sides of one side surface of the mounting plate 110, the slide rail 111 is connected with the slide block 112 in a sliding manner, the two slide blocks 112 are mounted on both sides of one side surface of the supporting vertical plate 116, the rack 114 is mounted between the two slide blocks 112 on one side surface of the supporting vertical plate 116, the rack 114 is engaged with the transmission gear 115, the transmission gear 115 is sleeved on an output shaft of the lifting motor 113, the lifting motor 113 is mounted on the top of the other side surface of, a grinding motor 117 is arranged on the L-shaped fixing plate 118, an output shaft of the grinding motor 117 penetrates through the L-shaped fixing plate 118 and is sleeved with a driving gear 119, a supporting transverse plate 120 is arranged at the bottom of the side surface of the supporting vertical plate 116 where the L-shaped fixing plate 118 is arranged, three bearing sleeves 122 are arranged on the supporting transverse plate 120 in a penetrating manner, the three bearing sleeves 122 are distributed in a shape like a Chinese character 'pin', linkage shafts 123 are rotatably arranged inside the three bearing sleeves 122, wherein the top ends of the two linkage shafts 123 are sleeved with driven gears 121, the top end of the other linkage shaft 123 is sleeved with a driving gear 119, the driving gear 119 is also sleeved on an output shaft of the grinding motor 117, the driving gear 119 and the two driven gears 121 are in transmission connection through a toothed belt, grinding shafts 124 are mounted at the bottom ends of the three linkage shafts 123, and a plurality of convex edges 125 are arranged on the outer walls of the grinding shafts 124 in an equal radian manner;

the matched grinding mechanism 102 comprises a grinding cylinder 126, a discharge hopper 127, a shaft penetrating hole 128, a grinding bin 129, a filter hole 130, a convex edge 131, a filter plate 132 and a feed inlet 133, the bottom of the grinding cylinder 126 is provided with a discharge hopper 127, the bottom end of the discharge hopper 127 is communicated with the feed inlet 108, the top of the grinding cylinder 126 is provided with three shaft holes 128 and a feed inlet 133, the bottom of the inner cavity of the grinding cylinder 126 is provided with three grinding bins 129, the three grinding bins 129 are respectively opposite to the three through shaft holes 128, the grinding chamber 129 has an inner diameter larger than the diameter of the through-hole 128, the grinding chamber 129 is provided on the filter plate 132, the filter plate 132 is installed inside the connection of the grinding drum 126 and the discharge hopper 127, the filter plate 132 is provided with a plurality of filter holes 130 at the bottom of the inner cavity of the grinding bin 129, and a plurality of convex edges 131 are arranged on the inner wall of the grinding bin 129 in an equiarc manner.

The linkage shaft 123 penetrates through the shaft penetrating hole 128, the grinding shaft 124 and the grinding bin 129 are matched components, and the number of the grinding shaft 124 and the grinding bin 129 can be designed according to actual production needs, including but not limited to three.

Referring to fig. 1-10, the operation of the grinding and dispersing apparatus of this embodiment is as follows:

the method comprises the following steps: adding mixture B from feed port 133 into the inner cavity of grinding drum 126, and feeding mixture B into grinding bin 129;

step two: starting the lifting motor 113, wherein the lifting motor 113 operates to drive the transmission gear 115 to rotate, and the support vertical plate 116 moves up and down on the sliding rail 111 through the sliding block 112 through the meshed connection between the transmission gear 115 and the rack 114, so as to drive the grinding shaft 124 to move up and down in the grinding bin 129;

step three: starting a grinding motor 117, wherein the grinding motor 117 operates to drive three linkage shafts 123 to rotate through a driving gear 119 and two driven gears 121, so as to drive three grinding shafts 124 to rotate;

step four: the grinding shaft 124 which moves up and down and rotates is matched with a convex blade 131 in a grinding bin 129 through a convex rib 125 to grind the mixture B;

step five: the uniformly ground mixture B is extruded by the grinding shaft 124, discharged from the filtering hole 130, enters the conveying pipe 105 from the feeding hole 108 through the discharging hopper 127, the conveying motor 104 is started, the conveying motor 104 operates to drive the conveying screw 109 to rotate, and the uniformly ground mixture B is conveyed forwards and discharged into the collecting box 107 through the discharging pipe 106 to obtain the water-based paint.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.

Claims

1. The water-based paint is characterized by comprising the following components in parts by weight: 20-30 parts of epoxy resin, 17-23 parts of water, 1.25-1.5 parts of defoaming agent, 16-18 parts of filler, 16-20 parts of barium sulfate, 1.2-1.3 parts of ammonia water, 1.5-2 parts of triethylamine, 12-15 parts of aluminum tripolyphosphate, 1.3-1.5 parts of cobalt isooctanoate, 2.5-3 parts of corrosion inhibitor and 11-14 parts of stabilizer;

the water-based paint is prepared by the following steps:

step four: adding the mixture B into an inner cavity of a grinding cylinder (126) from a feed opening (133) of the grinding and dispersing equipment, and enabling the mixture B to enter a grinding bin (129);

step five: starting a lifting motor (113), wherein the lifting motor (113) runs to drive a transmission gear (115) to rotate, and the transmission gear (115) is meshed with a rack (114) to enable a supporting vertical plate (116) to move up and down on a sliding rail (111) through a sliding block (112), so that a grinding shaft (124) is driven to move up and down in a grinding bin (129);

step six: starting a grinding motor (117), wherein the grinding motor (117) operates to drive three linkage shafts (123) to rotate through a driving gear (119) and two driven gears (121), so that three grinding shafts (124) are driven to rotate;

step seven: the grinding shaft (124) which moves up and down and rotates is matched with a convex blade (131) in a grinding bin (129) through a convex rib (125) to grind the mixture B;

step eight: and discharging the uniformly ground mixture B from the filtering hole (130) under the extrusion of the grinding shaft (124), feeding the mixture B into the conveying pipe (105) from the feeding hole (108) through the discharging hopper (127), starting the conveying motor (104), driving the conveying screw (109) to rotate by the operation of the conveying motor (104), and forward conveying the uniformly ground mixture B through the discharging pipe (106) and discharging the mixture B into the collecting box (107) to obtain the water-based paint.

2. The water-based paint as claimed in claim 1, wherein the defoaming agent is one or more of polyethylene wax, n-butanol and tributyl phosphate in any proportion; the filler is one or a mixture of more of talcum powder, barite and mica in any proportion; the mass concentration of the ammonia water is 20-30 wt%; the corrosion inhibitor is cetyl trimethyl ammonium bromide and lanthanum citrate, and the mass ratio of the corrosion inhibitor to the lanthanum citrate is 1: 1-5 of a mixture; the stabilizer is one of ethylene glycol butyl ether and polyurethane.

3. The method for preparing the water-based paint according to claim 1, which is characterized by comprising the following steps:

4. The preparation method of the water-based paint according to claim 3, characterized in that the grinding and dispersing device comprises a grinding mechanism (101), a matching grinding mechanism (102), a mounting base (103), a conveying motor (104), a conveying pipe (105), a discharging pipe (106), a collecting box (107), a feeding port (108) and a conveying screw (109), the matching grinding mechanism (102) is embedded and mounted at the axis of the top of the mounting base (103), the grinding mechanism (101) is mounted at one side of the top of the mounting base (103), the conveying motor (104) is mounted at the top of the inner cavity of the mounting base (103), one end of the conveying motor (104) is connected with the conveying pipe (105), the discharging pipe (106) is mounted at the bottom of one end of the conveying pipe (105) far away from the conveying motor (104), and the collecting box (107) is arranged right below the discharging pipe (, the collecting box (107) is placed in an inner cavity of the mounting base (103), a feeding hole (108) is formed in one end, close to the conveying motor (104), of the top of the conveying pipe (105), a conveying screw (109) is arranged in the inner cavity of the conveying pipe (105), and one end of the conveying screw (109) is connected to an output shaft of the conveying motor (104).

5. The preparation method of the water-based paint according to claim 4, characterized in that the grinding mechanism (101) comprises a mounting plate (110), a slide rail (111), a slide block (112), a lifting motor (113), a rack (114), a transmission gear (115), a supporting vertical plate (116), a grinding motor (117), an L-shaped fixing plate (118), a driving gear (119), a supporting transverse plate (120), a driven gear (121), a bearing sleeve (122), a linkage shaft (123) and a grinding shaft (124), wherein the bottom end of the mounting plate (110) is mounted on a mounting base (103), the slide rail (111) is mounted on both sides of one side surface of the mounting plate (110), the slide rail (111) is slidably connected with the slide block (112), the two slide blocks (112) are mounted on both sides of one side surface of the supporting vertical plate (116), the rack (114) is mounted on one side surface of the supporting vertical plate (116) between the two slide blocks (, the rack (114) is meshed with a transmission gear (115), the transmission gear (115) is sleeved on an output shaft of a lifting motor (113), the lifting motor (113) is installed at the top of the other side face of the installation plate (110), an L-shaped fixing plate (118) is installed at the shaft center of the other side face of the supporting vertical plate (116), a grinding motor (117) is installed on the L-shaped fixing plate (118), the output shaft of the grinding motor (117) penetrates through the L-shaped fixing plate (118) and is sleeved with a driving gear (119), a supporting transverse plate (120) is installed at the bottom of the side face of the L-shaped fixing plate (118) of the supporting vertical plate (116), three bearing sleeves (122) are installed on the supporting transverse plate (120) in a penetrating mode and are three, the bearing sleeves (122) are distributed in a 'product' shape, and are three, a linkage shaft (123) is installed inside the, driven gears (121) are sleeved on the top ends of the linkage shafts (123), a driving gear (119) is sleeved on the top end of the linkage shaft (123), the driving gear (119) is also sleeved on an output shaft of a grinding motor (117), the driving gear (119) and the two driven gears (121) are in transmission connection through a toothed belt, the number of the driving gear is three, grinding shafts (124) are installed at the bottom ends of the linkage shafts (123), and a plurality of convex ribs (125) are arranged on the outer walls of the grinding shafts (124) in an equiradian mode.

6. The preparation method of the water-based paint according to claim 4, characterized in that the matched grinding mechanism (102) comprises a grinding cylinder (126), a discharge hopper (127), a shaft-passing hole (128), a grinding bin (129), a filtering hole (130), a convex edge (131), a filtering plate (132) and a feeding port (133), the discharge hopper (127) is installed at the bottom of the grinding cylinder (126), the bottom end of the discharge hopper (127) is communicated to the feeding port (108), the top of the grinding cylinder (126) is provided with three shaft-passing holes (128) and a feeding port (133), the bottom of the inner cavity of the grinding cylinder (126) is provided with three grinding bins (129), the three grinding bins (129) are respectively opposite to the three shaft-passing holes (128), the inner diameter of the grinding bin (129) is larger than the diameter of the shaft-passing hole (128), the grinding bins (129) are arranged on the filtering plate (132), the filter plate (132) is installed inside the junction of grinding vessel (126) and play hopper (127), a plurality of filtration pore (130) have been seted up to filter plate (132) bottom the inner chamber of grinding storehouse (129), grind the equidistance radian on the inner wall of storehouse (129) and be provided with a plurality of convex edge (131).

7. The preparation method of the water-based paint as claimed in claim 5, wherein the linkage shaft (123) penetrates through the shaft penetrating hole (128), and the grinding shaft (124) and the grinding bin (129) are matched components.