Environment-friendly stain-resistant composite inorganic paint and preparation method thereof

Abstract

The invention relates to the technical field of inorganic paint, in particular to environment-friendly stain-resistant composite inorganic paint and a preparation method thereof. The environment-friendly stain-resistant composite inorganic paint is prepared from water, filler, a dispersing agent, an anti-freezing agent, a coalescing agent, a defoaming agent, a preservative, a thickening agent and nano bamboo charcoal. The water, the filler, the dispersing agent, the anti-freezing agent, the coalescing agent, the defoaming agent, the thickening agent and the nano bamboo charcoal are prepared from the following components in parts by weight: 90 to 160 parts of water, 30 to 100 parts of filler, 0.5 to 3 parts of dispersing agent, 3 to 11 parts of anti-freezing agent, 4 to 11 parts of coalescing agent, 0.4 to 5 parts of defoaming agent, 0.5 to 3.6 parts of thickening agent and 5 to 30 parts of nano bamboo charcoal; according to the present invention, the material is discharged out of the stirring cylinder from the backflow groove while the material is stirred by the inner blade in the stirring cylinder, and is pushed by the outer blade to return to the stirring cylinder so as to complete the cyclic stirring, and the agglomerated nano-scale bamboo charcoal can be extruded and dispersed by the grinding block on the inverted cone-shaped block during the process so as to dissipate the agglomerated nano-scale bamboo charcoal.

Description

Technical Field

[0001] The invention relates to the technical field of inorganic paints, and in particular to an environmentally friendly, stain-resistant composite inorganic paint and a preparation method thereof. Background Art

[0002] Environmentally friendly stain-resistant composite inorganic paint is an innovative paint product. It uses inorganic materials as the main ingredients, has excellent environmental performance, does not contain harmful volatile organic compounds (VOC), and is harmless to human health and the environment. This paint has excellent stain resistance and can effectively resist the adhesion of dust, stains and pollutants, keeping the wall clean for a long time. Its strong adhesion can firmly adhere to the surface of various substrates and is not easy to fall off; Nano-scale bamboo charcoal is often added to the environmentally friendly stain-resistant composite inorganic paint to increase the adsorption and purification capacity of the environmentally friendly stain-resistant composite inorganic paint; after the bamboo charcoal is ground into nano-scale bamboo charcoal, it is pre-dispersed, and the nano-scale bamboo charcoal, dispersant and deionized water are added to a stirring container and stirred, and then the inorganic film-forming substance, the remaining deionized water, inorganic pigments, and additives such as defoaming agents and leveling agents are added, and the mixture is fully stirred; During the pre-dispersion process, since the nano-bamboo charcoal particles have a high surface energy and tend to combine with each other to reduce the surface energy, the nano-bamboo charcoal particles aggregate to form larger clusters instead of being evenly dispersed in the solvent. Therefore, the nano-bamboo charcoal will agglomerate in deionized water. The agglomeration phenomenon will seriously affect the subsequent processing and product performance. It will cause uneven dispersion and reduce the quality of the paint, such as uneven color, reduced hiding power, poor stain resistance, etc., which will cause limitations.

[0003] To this end, we propose an environmentally friendly, stain-resistant composite inorganic paint and a preparation method thereof. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for preparing an environmentally friendly, stain-resistant composite inorganic paint, which overcomes the deficiencies in the prior art and aims to solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an environmentally friendly, stain-resistant composite inorganic paint, comprising water, a filler, a dispersant, an antifreeze agent, a film-forming aid, a defoamer, a preservative, a thickener and nano bamboo charcoal; the weight proportions of the water, filler, dispersant, antifreeze agent, film-forming aid, defoamer, thickener and nano bamboo charcoal are as follows: 90-160 parts of water, 30-100 parts of filler, 0.5-3 parts of dispersant, 3-11 parts of antifreeze agent, 4-11 parts of film-forming aid, 0.4-5 parts of defoaming agent, 0.5-3.6 parts of thickener and 5-30 parts of nano bamboo charcoal.

[0006] A method for preparing an environmentally friendly, stain-resistant composite inorganic paint, the steps of the method are as follows: S1, adding bamboo charcoal to a grinding device and grinding it to nanometer level, then adding nanometer-level bamboo charcoal powder, dispersant and filler to a pre-dispersion device, the pre-dispersion device performs stirring and dispersion, so that the nanometer-level bamboo charcoal and filler are initially dispersed evenly, and the pre-dispersion device squeezes the nanometer-level bamboo charcoal powder to eliminate the agglomeration of the nanometer-level bamboo charcoal powder; S2, transfer the pre-dispersed material to a stirring tank, add antifreeze, film-forming aid, defoamer and thickener in sequence, and stir well; S3. Test the performance indicators of the paint liquid, then use a filter with a suitable pore size to filter the prepared paint liquid to remove possible impurities and particles, and finally package and store the filtered paint liquid.

[0007] Preferably, in S1, the pre-dispersing equipment includes a shell, a stirring motor and a stirring drum; a rotating seat is fixedly connected to the bottom of the shell; the stirring drum is rotatably connected to the rotating seat; an inner paddle is provided on the inner wall of the stirring drum; an outer paddle is provided on the outer wall of the stirring drum; the inner paddle and the outer paddle rotate in opposite directions; a reflux groove is provided on the rotating seat; the reflux groove connects the inside of the stirring drum with the outside of the stirring drum; an inverted conical block is fixedly connected to the rotating seat; grinding blocks are evenly fixedly connected to the surface of the inverted conical block; the lower end of the stirring drum is adapted to the shape of the inverted conical block.

[0008] Preferably, in S1, an inner arc plate is provided on the inner wall of the outer shell; the inner arc plate rings are in contact with each other to form a circular ring.

[0009] Preferably, in S1, the inner arc plate is fixedly connected to the inner wall of the outer shell by fixing bolts.

[0010] While stirring the material through the inner paddle in the mixing drum, the material is pushed downward, so that the material is discharged from the reflux groove to the outside of the mixing drum, and then pushed back into the mixing drum by the outer paddle to complete the cycle stirring. In this process, the agglomerated nano-scale bamboo charcoal will be squeezed and dispersed by the grinding block on the inverted cone block, thereby dissipating the agglomeration.

[0011] Preferably, in S1, the lower end of the mixing drum is fixedly connected with a mounting ring; the mounting ring is evenly provided with adjustment grooves; an adjustment block is slidably connected in the adjustment groove; and the mounting ring fits with the inverted cone block.

[0012] Preferably, in S1, an adjustment groove is provided at the lower end of the mixing drum; an adjustment ring is rotatably connected in the adjustment groove; a connecting groove is provided between the adjustment grooves; the parts of the adjustment ring and the adjustment block located in the connecting groove are arranged to be in an oblique shape that fits each other; and the adjustment ring is fixed by bolts.

[0013] Preferably, in S1, a guide groove is provided on the surface of the inverted cone block.

[0014] The distance between the adjusting block and the inverted cone block is adjusted by rotating the adjusting ring, and a guide groove is provided on the inverted cone block to prevent the agglomerated nano-scale bamboo charcoal from being crushed and dispersed between the inverted cone block and the adjusting block and blocking the inverted cone block and the adjusting block.

[0015] Beneficial effects of the present invention: 1. The present invention stirs the material through the inner paddle in the mixing drum and pushes the material downward, so that the material is discharged from the reflux groove to the outside of the mixing drum, and then pushed by the outer paddle, returns to the mixing drum to complete the cycle stirring. In this process, the agglomerated nano-scale bamboo charcoal will be squeezed and dispersed by the grinding block on the inverted cone block, so that the agglomeration is dissipated.

[0016] 2. The present invention adjusts the distance between the adjustment block and the inverted conical block by rotating the adjustment ring, and at the same time, a guide groove is provided on the inverted conical block to prevent the agglomerated nano-scale bamboo charcoal from being crushed and dispersed between the inverted conical block and the adjustment block and blocking the inverted conical block and the adjustment block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a pre-dispersion device in a method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to the present invention; Figure 2 It is a schematic diagram of the structure of the pre-dispersion device in the present invention in a partial cross-sectional state; Figure 3 It is a partial cross-sectional view of a rotating seat, an inverted cone block, a stirring drum and an adjusting ring in the pre-dispersing device of the present invention; Figure 4 for Figure 3 Partial cross-sectional view of the adjustment ring, adjustment block, adjustment ring and inverted cone block from the cross-sectional perspective at AA in the middle.

[0018] In the figure: 1. outer shell; 11. stirring motor; 12. rotating seat; 13. stirring drum; 14. inner paddle; 15. outer paddle; 2. reflux groove; 3. inverted cone block; 31. grinding block; 4. mounting ring; 41. adjustment groove; 42. adjustment block; 5. adjustment groove; 51. adjustment ring; 52. connecting groove; 6. inner arc plate; 7. guide groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: An environmentally friendly, stain-resistant composite inorganic paint, comprising water, filler, dispersant, antifreeze agent, film-forming agent, defoamer, preservative, thickener and nano bamboo charcoal; wherein the filler is a color filler; the weight proportions of water, filler, dispersant, antifreeze agent, film-forming agent, defoamer, thickener and nano bamboo charcoal are as follows: 160 parts of water, 30 parts of filler, 3 parts of dispersant, 11 parts of antifreeze agent, 11 parts of film-forming aid, 5 parts of defoaming agent, 3.6 parts of thickener and 30 parts of nano bamboo charcoal.

[0021] Embodiment 2: A method for preparing an environmentally friendly, stain-resistant composite inorganic paint, the steps of the method are as follows: S1, adding bamboo charcoal to a grinding device and grinding it to nanometer level, then weighing out 30 parts of nanometer bamboo charcoal, 50 parts of water, 3 parts of dispersant and 30 parts of filler; adding the nanometer bamboo charcoal powder, dispersant and filler to a pre-dispersing device, the pre-dispersing device performs stirring and dispersion, so that the nanometer bamboo charcoal and the filler are initially dispersed uniformly, and the pre-dispersing device squeezes the nanometer bamboo charcoal powder to eliminate the agglomeration of the nanometer bamboo charcoal powder; S2, transfer the pre-dispersed material to a stirring tank, then add 110 parts of water, 11 parts of antifreeze, 11 parts of film-forming aid, 5 parts of defoamer and 3.6 parts of thickener in sequence, and stir well; S3. Test the performance indicators of the paint liquid, then use a filter with a suitable pore size to filter the prepared paint liquid to remove possible impurities and particles, and finally package and store the filtered paint liquid.

[0022] In the present invention, in S1, the pre-dispersion equipment includes an outer shell 1, a stirring motor 11 and a stirring drum 13; a rotating seat 12 is fixedly connected to the bottom of the outer shell 1; the stirring drum 13 is rotatably connected to the rotating seat 12; an inner paddle 14 is provided on the inner wall of the stirring drum 13; an outer paddle 15 is provided on the outer wall of the stirring drum 13; the inner paddle 14 and the outer paddle 15 rotate in opposite directions; a reflux groove 2 is opened on the rotating seat 12; the reflux groove 2 connects the inside of the stirring drum 13 with the outside of the stirring drum 13; an inverted conical block 3 is fixedly connected to the rotating seat 12; a grinding block 31 is evenly fixedly connected to the surface of the inverted conical block 3; the lower end of the stirring drum 13 is adapted to the shape of the inverted conical block 3.

[0023] In the present invention, in S1, an inner arc plate 6 is provided on the inner wall of the outer shell 1; the inner arc plates 6 are in contact with each other to form a circular ring.

[0024] In the present invention, in S1, the inner arc plate 6 is fixedly connected to the inner wall of the housing 1 by fixing bolts.

[0025] In the present invention, after the nano-scale bamboo charcoal, the dispersant and the deionized water are added into the mixing drum 13, the stirring motor 11 drives the mixing drum 13 to rotate, and the inner paddle blade 14 in the mixing drum 13 rotates and stirs the material in the mixing drum 13, while the inner paddle blade 14 presses the material in the mixing drum 13 downward, so that the material in the mixing drum 13 is discharged from the reflux tank 2 to the outside of the mixing drum 13, and then the outer paddle blade 15 outside the mixing drum 13 pushes the material outside the mixing drum 13 upward, and then the material is guided by the inner arc plate 6 to return to the mixing drum 13; when the material passes through the conical block, the agglomerated nano-scale bamboo charcoal will be squeezed by the grinding block 31 on the surface of the inverted conical block 3, so as to be dispersed, so that the agglomeration is eliminated; The present invention stirs the material by the inner paddle 14 in the mixing drum 13 while pushing the material downward, so that the material is discharged from the reflux tank 2 to the outside of the mixing drum 13, and then pushed by the outer paddle 15, returns to the mixing drum 13 to complete the cycle stirring. In this process, the agglomerated nano-scale bamboo charcoal will be squeezed and dispersed by the grinding block 31 on the inverted cone block 3, so that the agglomeration is dissipated.

[0026] In the present invention, in S1 , the lower end of the mixing drum 13 is fixedly connected with a mounting ring 4 ; the mounting ring 4 is evenly provided with adjustment grooves 41 ; an adjustment block 42 is slidably connected in the adjustment groove 41 ; and the mounting ring 4 fits with the inverted cone block 3 .

[0027] In the present invention, in S1, an adjustment groove 5 is opened at the lower end of the mixing drum 13; an adjustment ring 51 is rotatably connected in the adjustment groove 5; a connecting groove 52 is opened between the adjustment groove 5 and the adjustment groove 41; the parts of the adjustment ring 51 and the adjustment block 42 located in the connecting groove 52 are arranged to be inclined and fit each other; and the adjustment ring 51 is fixed by bolts.

[0028] In the present invention, in S1, a guide groove 7 is provided on the surface of the inverted cone block 3 .

[0029] In the present invention, the material enters the reflux groove 2 on the rotating seat 12 along the gap between the adjustment block 42 and the inverted cone block 3; the staff rotates the adjustment ring 51 so that the adjustment ring 51 pushes the corresponding adjustment block 42 to move in the adjustment groove 41 through the inclined surface, thereby adjusting the distance between the adjustment block 42 and the inverted cone block 3; therefore, when the sizes of the materials agglomerated together are different, the present invention can adjust the distance between the adjustment block 42 and the inverted cone block 3 to adapt to the size of the nano-scale bamboo charcoal agglomerated together; In the present invention, a guide groove 7 is provided on the surface of the inverted conical block 3, so that the liquid can flow through the guide groove 7. Therefore, when the space between the inverted conical block 3 and the adjustment block 42 is filled with dry nano-scale bamboo charcoal, the liquid in the guide groove 7 will infiltrate the dry nano-scale bamboo charcoal between the inverted conical block 3 and the adjustment block 42, thereby preventing the dry nano-scale bamboo charcoal from clogging the inverted conical block 3 and the adjustment block 42. The present invention adjusts the distance between the adjustment block 42 and the inverted conical block 3 by rotating the adjustment ring 51, and at the same time, a guide groove 7 is provided on the inverted conical block 3 to prevent the agglomerated nano-scale bamboo charcoal from being crushed and dispersed between the inverted conical block 3 and the adjustment block 42 and blocking the inverted conical block 3 and the adjustment block 42.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected; the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. An environmentally friendly, stain-resistant composite inorganic paint, characterized in that: The invention comprises water, filler, dispersant, antifreeze agent, film-forming agent, defoamer, preservative, thickener and nano bamboo charcoal; the weight proportions of the water, filler, dispersant, antifreeze agent, film-forming agent, defoamer, thickener and nano bamboo charcoal are as follows: 90-160 parts of water, 30-100 parts of filler, 0.5-3 parts of dispersant, 3-11 parts of antifreeze agent, 4-11 parts of film-forming aid, 0.4-5 parts of defoaming agent, 0.5-3.6 parts of thickener and 5-30 parts of nano bamboo charcoal.

2. A method for preparing an environmentally friendly, stain-resistant composite inorganic paint, characterized in that: The steps of this method are as follows: S1, adding bamboo charcoal to a grinding device and grinding it to nanometer level, then adding nanometer-level bamboo charcoal powder, dispersant and filler to a pre-dispersion device, the pre-dispersion device performs stirring and dispersion, so that the nanometer-level bamboo charcoal and filler are initially dispersed evenly, and the pre-dispersion device squeezes the nanometer-level bamboo charcoal powder to eliminate the agglomeration of the nanometer-level bamboo charcoal powder; S2, transfer the pre-dispersed material to a stirring tank, add antifreeze, film-forming aid, defoamer and thickener in sequence, and stir well; S3. Test the performance indicators of the paint liquid, then use a filter with a suitable pore size to filter the prepared paint liquid to remove possible impurities and particles, and finally package and store the filtered paint liquid.

3. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 2, characterized in that: In S1, the pre-dispersing device comprises a housing (1), a stirring motor (11) and a stirring drum (13); a rotating seat (12) is fixedly connected to the bottom of the housing (1); the stirring drum (13) is rotatably connected to the rotating seat (12); an inner paddle (14) is arranged on the inner wall of the stirring drum (13); an outer paddle (15) is arranged on the outer wall of the stirring drum (13); the inner paddle (14) and the outer paddle (15) rotate in opposite directions; a reflux groove (2) is provided on the rotating seat (12); the reflux groove (2) connects the inside of the stirring drum (13) with the outside of the stirring drum (13); an inverted conical block (3) is fixedly connected to the rotating seat (12); a grinding block (31) is evenly fixedly connected to the surface of the inverted conical block (3); and the lower end of the stirring drum (13) is adapted to the shape of the inverted conical block (3).

4. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 3, characterized in that: In S1, an inner arc plate (6) is provided on the inner wall of the outer shell (1); the inner arc plates (6) are in contact with each other to form a circular ring.

5. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 4, characterized in that: In S1, the inner arc-shaped plate (6) is fixedly connected to the inner wall of the outer shell (1) by means of fixing bolts.

6. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 5, characterized in that: In S1, the lower end of the mixing drum (13) is fixedly connected to a mounting ring (4); the mounting ring (4) is evenly provided with adjustment grooves (41); an adjustment block (42) is slidably connected in the adjustment groove (41); and the mounting ring (4) is in contact with the inverted cone block (3).

7. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 6, characterized in that: In S1, an adjustment groove (5) is provided at the lower end of the mixing drum (13); an adjustment ring (51) is rotatably connected in the adjustment groove (5); a connecting groove (52) is provided between the adjustment groove (5) and the adjustment groove (41); the parts of the adjustment ring (51) and the adjustment block (42) located in the connecting groove (52) are arranged in an oblique shape that fits each other; and the adjustment ring (51) is fixed by bolts.

8. The method for preparing an environmentally friendly, stain-resistant composite inorganic paint according to claim 7, characterized in that: In S1, a guide groove (7) is provided on the surface of the inverted cone block (3).

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