Environment-friendly wood coloring filler and preparation method thereof

Abstract

The invention discloses an environment-friendly wood coloring filler and a preparation method thereof, relates to the technical field of wood coloring, and solves the technical problems of difficulty in construction, easiness in sinking, non-uniform coloring, VOC (volatile organic compound) emission and the like of the existing wood coloring filler. The invention relates to an environment-friendly wood coloring filler which comprises the following components in percentage by weight: 10-20% of resin, 20-50% of an alcohol ether solvent, 2-5% of bentonite, 3-5% of lignin, 10-20% of kaolin, 10-30% of hard wood flour, 20-40% of transparent talcum powder and 3-5% of a delayed drying polymer. The resin, the propylene glycol, the bentonite, the lignin, the kaolin, the hard wood flour and the transparent talcum powder are used for replacing materials mainly comprising the resin weighted calcium powder and the color paste in the prior art, so that the characteristics that the universality is wide, the collapse is avoided, the coating construction is easy, the color is bright, the natural texture of wood is improved, and the storage stability is excellent are realized; the use amount of the paint is greatly reduced, and VOC emission is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wood coloring, in particular to an environmentally friendly wood coloring filler and a preparation method thereof. Background Art

[0002] The oily wood stains currently sold on the market are all made of alkyd resin and heavy calcium powder as fillers and solvents as raw materials, with wetting and dispersing agents added, high-speed dispersion, color paste, and color concentrate to form wood coloring products. They have certain advantages such as wood grain filling and wood grain coloring.

[0003] However, the materials mainly based on resin weighted calcium powder and color paste are generally difficult to apply and rub, the filling effect is poor if it does not reach the wood grain, the paint easily collapses after drying, the coloring is uneven, the solvent is not environmentally friendly and a large amount of VOC is emitted. The construction pollutes the environment; therefore, it does not meet the existing needs. In this regard, we propose an environmentally friendly wood coloring filler and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide an environmentally friendly wood coloring filler and a preparation method thereof, so as to solve the technical defects of the existing wood coloring filler, such as poor construction, easy sinking and uneven coloring, VOC emissions, etc., as mentioned in the above background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution: an environmentally friendly wood coloring filler, composed of components in weight percentage, including 10%-20% resin, 20-50% alcohol ether solvent, 2-5% bentonite, 3-5% lignin, 10-20% kaolin, 10-30% hardwood powder, 20-40% transparent talc, and 3-5% delayed drying polymer.

[0006] Preferably, the resin is a self-drying resin, and alkyd resin 389-7 is used, so that it has good compatibility with various resins through the film-forming and wood adhesion functions of the resin, and is convenient for making water-based or oil-based paints after drying.

[0007] Preferably, the length of the lignin is 1-3 mm, and its main function is to remove moisture and dry the wood grain after rubbing and coloring, thereby guiding the primer to flow into the inside of the wood grain.

[0008] Preferably, the alcohol ether solvent is propylene glycol, and the delayed drying polymer is composed of a slow-drying resin and a high-boiling point solvent. The slow-drying resin adopts a long-oil alkyd resin, and the high-boiling point solvent adopts dioctyl phthalate, which mainly functions to retain water, thereby slowing down the volatilization rate of water and extending the time that the colorant can be applied.

[0009] A method for preparing an environmentally friendly wood coloring filler comprises the following steps: Step A: using a mixing tank to process the materials, firstly, 35 kg of alcohol ether solvent, 3 kg of bentonite, 2 kg of lignin, 10 kg of resin and 3 kg of delayed drying polymer are added into the mixing tank, and then the motor is controlled to drive the stirring mechanism inside the mixing tank to stir the materials inside at high speed, so that the mixed materials are evenly paddle-shaped, and then 10 kg of kaolin, 25 kg of hard wood powder and 15 kg of transparent talcum powder are added therein, and the motor is continued to drive the rotating shaft inside the mixing tank to stir the newly added materials at high speed to mix the various materials and prepare a paste-like product; Step B: The prepared paste-like product is put into a grinder for fine grinding, which requires a mixing tank, and then taken out and placed in the mixing tank, and the paste-like product is stirred and mixed by controlling a motor to drive a rotating shaft inside the mixing tank, so that the materials are fully mixed in the mixing tank; Step C: Then add the required 5-10% nano transparent color paste into the mixing tank to dye the ground product, and at the same time, use the stirring mechanism inside the mixing tank to fully mix and dye the transparent color paste with the paste product, and finally obtain the final product; Step D: After the final product is tested and qualified by the testing equipment, the qualified product is transported to the filling machine through the conveying pipeline, filled into the storage barrel by the filling machine for storage, and then packaged on the outside of the storage barrel by the packaging machine.

[0010] Preferably, the high-speed stirring speed in step A is 500-1300 rpm.

[0011] Preferably, the fineness of the grinder in step B is 5-20 um.

[0012] Preferably, the transparent color paste in step C is a universal color paste, the main component of which is made of iron oxide pigment, the stirring speed of the mixing tank in step C is 500-1000rpm, and the fineness of the nano transparent color paste in step C is 200-500 nanometers.

[0013] Preferably, the mixing cylinder in step A comprises a cylinder body, a first rotating shaft, a stirring connecting rod, a partition table, a pushing plate, a bottom material turntable, an anti-blocking plate and a filter screen, a motor is provided at the top of the cylinder body, a first rotating shaft is movably installed inside the cylinder body, the output end of the motor is connected to the top of the first rotating shaft through a coupling, a partition table is fixedly installed inside the cylinder body, four stirring connecting rods are fixedly installed at a position above the partition table on the outer surface of the first rotating shaft, a through hole is provided at the center position of the surface of the partition table, a filter screen is movably installed inside the through hole, two push plates are fixedly installed at a position below the partition table on the outer surface of the first rotating shaft, and a bottom material turntable is fixedly installed at the bottom end of the first rotating shaft.

[0014] Preferably, the mixing tank in step C comprises a tank body, a second rotating shaft, a U-shaped stirring rod, a spiral stirring rod and an arc-shaped scraper rod, the second rotating shaft is movably installed inside the tank body, a motor is provided at the top of the tank body, the output end of the motor is connected to the top of the second rotating shaft through a coupling, four U-shaped stirring rods are fixedly installed on the outer surface of the second rotating shaft, a spiral stirring rod is fixedly installed on the outer surface of the second rotating shaft, four arc-shaped scraper rods are fixedly installed on the bottom end of the spiral stirring rod, the arc-shaped scraper rods are all fitted with the inner wall panel of the tank body, a feed port and a feeding pipe are respectively provided on both sides of the cylinder body and the top of the tank body, a discharge port is provided on one side of the outer surface of the cylinder body and the tank body, and a support frame is fixedly installed on the bottom end of the cylinder body and the tank body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The environmentally friendly wood coloring filler of the present invention has the characteristics of wide versatility, no collapse, easy application, bright colors, improving the natural texture of wood, and excellent storage stability. It can greatly reduce the amount of paint used and reduce VOC emissions; 2. The present invention modulates the wood coloring filler by adding a time-delay drying polymer, so that the wood coloring filler of the present invention has water retention, thereby slowing down the volatilization rate of water and extending the time for the colorant to be applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the process of the present invention; Figure 2 It is a front view of some structures in the preparation process of the present invention; Figure 3 It is a schematic diagram of the structure of the mixing tank of the present invention; Figure 4 It is a cross-sectional front view of the mixing tank of the present invention; Figure 5 It is a cross-sectional front view of the mixing tank of the present invention; Figure 6 It is a partial cross-sectional front view of part A of the present invention.

[0017] In the figure: 1. mixing cylinder; 101. cylinder body; 102. first rotating shaft; 103. stirring connecting rod; 104. partition table; 105. push plate; 106. bottom material turntable; 107. anti-blocking plate; 108. filter screen; 2. mixing tank; 201. tank body; 202. second rotating shaft; 203. U-shaped stirring rod; 204. spiral stirring rod; 205. arc scraper rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] See also Figures 1 to 6 The present invention provides an embodiment: an environmentally friendly wood coloring filler, which is composed of components in weight percentage, including 10%-20% resin, 20-50% alcohol ether solvent, 2-5% bentonite, 3-5% lignin, 10-20% kaolin, 10-30% hardwood powder, 20-40% transparent talc, and 3-5% delayed drying polymer.

[0020] By adopting the above technical solution, the hardwood powder and kaolin play a filling role, so that the coloring filler can be fixed and not sink, and the transparent talcum powder plays a filling role, so that the coloring filler can be applied smoothly.

[0021] Furthermore, the resin is a self-drying resin, and alkyd resin 389-7 type is used.

[0022] By adopting the above technical scheme, the film-forming and wood adhesion functions of the resin can be used to make it compatible with various resins, and it is convenient to make water-based or oil-based paints after drying, and the product has wide versatility.

[0023] Further, the length of lignin is 1-3 mm.

[0024] By adopting the above technical solution, the lignin can play the role of removing moisture and drying in the wood grain after rubbing and coloring, and guiding the primer to flow into the wood grain.

[0025] Furthermore, the alcohol ether solvent is propylene glycol, and the delayed drying polymer is composed of a slow-drying resin and a high-boiling point solvent. The slow-drying resin adopts a long-oil alkyd resin, and the high-boiling point solvent adopts dioctyl phthalate, which mainly functions to retain water, thereby slowing down the volatilization rate of water and extending the time that the colorant can be applied.

[0026] A method for preparing an environmentally friendly wood coloring filler comprises the following steps: Step A: using a mixing tank 1 to process the material, firstly, 35 kg of alcohol ether solvent, 3 kg of bentonite, 2 kg of lignin, 10 kg of resin and 3 kg of delayed drying polymer are added into the mixing tank 1, then the motor is controlled to drive the stirring mechanism inside the mixing tank 1 to stir the materials inside at high speed, so that the mixed materials are evenly paddle-shaped, then 10 kg of kaolin, 25 kg of hard wood powder and 15 kg of transparent talcum powder are added, and the motor is controlled to drive the rotating shaft inside the mixing tank 1 to stir the newly added materials at high speed to mix the various materials to prepare a paste-like product; Step B: putting the prepared paste-like product into a grinder for fine grinding, which requires a mixing tank 2, and then taking it out and placing it in the mixing tank 2, while controlling the motor to drive the rotating shaft inside the mixing tank 2 to stir and mix the paste-like product, so that the materials are fully mixed in the mixing tank 2; Step C: Then add the required 5-10% nano transparent color paste into the mixing tank 2 to dye the ground product, and at the same time, the transparent color paste and the paste-like product are fully mixed and dyed through the stirring mechanism inside the mixing tank 2, and finally the final product can be obtained; Step D: After the final product is tested and qualified by the testing equipment, the qualified product is transported to the filling machine through the conveying pipeline, filled into the storage barrel by the filling machine for storage, and then packaged on the outside of the storage barrel by the packaging machine.

[0027] Further, the high-speed stirring speed in step A is 500-1300 rpm.

[0028] Furthermore, the fineness of the grinder in step B is 5-20 um.

[0029] Furthermore, the transparent color paste in step C is a universal color paste, the main component of which is made of iron oxide pigment, the stirring speed of the mixing tank 2 in step C is 500-1000rpm, and the fineness of the nano transparent color paste in step C is 200-500 nanometers.

[0030] Further, the mixing cylinder in step A includes a cylinder body 101, a first rotating shaft 102, a stirring connecting rod 103, a partition table 104, a pushing plate 105, a bottom material turntable 106, an anti-blocking plate 107 and a filter screen 108. A motor is provided at the top of the cylinder body 101, and the first rotating shaft 102 is movably installed inside the cylinder body 101. The output end of the motor is connected to the top of the first rotating shaft 102 through a coupling. The partition table 104 is fixedly installed inside the cylinder body 101. Four stirring connecting rods 103 are fixedly installed on the outer surface of the first rotating shaft 102 at a position above the partition table 104. A through hole is provided at the center of the surface of the partition table 104, and a filter screen 108 is movably installed inside the through hole. Two push plates 105 are fixedly installed on the outer surface of the first rotating shaft 102 at a position below the partition table 104, and the bottom material turntable 106 is fixedly installed at the bottom end of the first rotating shaft 102.

[0031] Further, the mixing tank in step C includes a tank body 201, a second rotating shaft 202, a U-shaped stirring rod 203, a spiral stirring rod 204 and an arc scraping rod 205. The second rotating shaft 202 is movably installed inside the tank body 201, and a motor is provided at the top of the tank body 201. The output end of the motor is connected to the top of the second rotating shaft 202 through a coupling. Four U-shaped stirring rods 203 are fixedly installed on the outer surface of the second rotating shaft 202. A spiral stirring rod 204 is provided, and four arc scraping rods 205 are fixedly installed at the bottom end of the spiral stirring rod 204, and the arc scraping rods 205 are all in contact with the inner wall panel of the tank body 201. A feed port and a feeding pipe are respectively provided on both sides of the top of the cylinder body 101 and the tank body 201, and a discharge port is provided on one side of the outer surface of the cylinder body 101 and the tank body 201. Support frames are fixedly installed at the bottom ends of the cylinder body 101 and the tank body 201, and the stirring cylinder 1 and the mixing tank 2 are connected through a feeding mechanism.

[0032] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An environmentally friendly wood coloring filler, characterized in that: The components in weight percentage include 10%-20% resin, 20-50% alcohol ether solvent, 2-5% bentonite, 3-5% lignin, 10-20% kaolin, 10-30% hardwood powder, 20-40% transparent talc powder and 3-5% delayed drying polymer.

2. The environmentally friendly wood coloring filler according to claim 1, characterized in that: The resin is a self-drying resin, and adopts alkyd resin 389-7 type, so that it has good compatibility with various resins through the film-forming and wood adhesion functions of the resin, and is convenient for making water-based or oil-based paints after drying.

3. The environmentally friendly wood coloring filler according to claim 1, characterized in that: The length of the lignin is 1-3 mm, and its main function is to remove moisture and dry the wood grain after rubbing and coloring, thereby guiding the primer to flow into the inside of the wood grain.

4. The environmentally friendly wood coloring filler according to claim 1, characterized in that: The alcohol ether solvent is propylene glycol, and the delayed drying polymer is composed of a slow-drying resin and a high-boiling-point solvent. The slow-drying resin adopts a long-oil alkyd resin, and the high-boiling-point solvent adopts dioctyl phthalate, which mainly functions to retain water, thereby slowing down the volatilization rate of water and extending the time that the colorant can be wiped off.

5. A method for preparing an environmentally friendly wood coloring filler, characterized in that: The following steps are involved: Step A: using a stirring tank (1) to process the materials, firstly, 35 kg of alcohol ether solvent, 3 kg of bentonite, 2 kg of lignin, 10 kg of resin and 3 kg of delayed drying polymer are added into the stirring tank (1), then the motor is controlled to drive the stirring mechanism inside the stirring tank (1) to stir the materials inside at high speed, so that the mixed materials are uniformly formed into a paddle shape, then 10 kg of kaolin, 25 kg of hard wood powder and 15 kg of transparent talcum powder are added into the stirring tank, and the motor is controlled to drive the rotating shaft inside the stirring tank (1) to stir the newly added materials inside at high speed to mix the various materials and prepare a paste-like product; Step B: placing the prepared paste-like product into a grinder for fine grinding, which requires a mixing tank (2), then taking it out and placing it in the mixing tank (2), while controlling the motor to drive the rotating shaft inside the mixing tank (2) to stir and mix the paste-like product, so that the materials are fully mixed in the mixing tank (2); Step C: then adding the required 5-10% nano transparent color paste into the mixing tank (2) to dye the ground product, and at the same time, the transparent color paste and the paste-like product are fully mixed and dyed through the stirring mechanism inside the mixing tank (2), and finally the final product is obtained; Step D: After the final product is tested and qualified by the testing equipment, the qualified product is transported to the filling machine through the conveying pipeline, filled into the storage barrel by the filling machine for storage, and then packaged on the outside of the storage barrel by the packaging machine.

6. The method for preparing an environmentally friendly wood coloring filler according to claim 5, characterized in that: The high-speed stirring speed in step A is 500-1300 rpm.

7. The method for preparing an environmentally friendly wood coloring filler according to claim 5, characterized in that: The fineness of the grinder in step B is 5-20 um.

8. The method for preparing an environmentally friendly wood coloring filler according to claim 5, characterized in that: The transparent color paste in step C is a universal color paste, the main component of which is made of iron oxide pigment. The stirring speed of the mixing tank (2) in step C is 500-1000 rpm, and the fineness of the nano transparent color paste in step C is 200-500 nanometers.

9. The method for preparing an environmentally friendly wood coloring filler according to claim 5, characterized in that: The stirring cylinder (1) in step A comprises a cylinder body (101), a first rotating shaft (102), a stirring connecting rod (103), a partition table (104), a pushing plate (105), a bottom material rotating table (106), an anti-blocking plate (107) and a filter screen (108). A motor is provided at the top of the cylinder body (101). The first rotating shaft (102) is movably installed inside the cylinder body (101). The output end of the motor is connected to the top of the first rotating shaft (102) via a coupling. The cylinder body (101) is fixed inside. A partition table (104) is installed, and four stirring connecting rods (103) are fixedly installed on the outer surface of the first rotating shaft (102) at a position above the partition table (104). A through hole is provided at the center position of the surface of the partition table (104), and a filter screen (108) is movably installed inside the through hole. Two pushing plates (105) are fixedly installed on the outer surface of the first rotating shaft (102) at a position below the partition table (104), and a base material turntable (106) is fixedly installed at the bottom end of the first rotating shaft (102).

10. The method for preparing an environmentally friendly wood coloring filler according to claim 9, characterized in that: The mixing tank (2) in step C comprises a tank body (201), a second rotating shaft (202), a U-shaped stirring rod (203), a spiral stirring rod (204) and an arc-shaped scraping rod (205); the second rotating shaft (202) is movably mounted inside the tank body (201); a motor is disposed at the top of the tank body (201); the output end of the motor is connected to the top of the second rotating shaft (202) via a coupling; four U-shaped stirring rods (203) are fixedly mounted on the outer surface of the second rotating shaft (202); A spiral stirring rod (204) is fixedly mounted on the outer surface of the shaft (202); four arc-shaped scraping rods (205) are fixedly mounted on the bottom end of the spiral stirring rod (204); the arc-shaped scraping rods (205) are all in contact with the inner wall panel of the tank body (201); a feed port and a feed pipe are respectively provided on both sides of the top of the cylinder body (101) and the tank body (201); a discharge port is provided on one side of the outer surface of the cylinder body (101) and the tank body (201); and a support frame is fixedly mounted on the bottom end of the cylinder body (101) and the tank body (201).

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