Preparation method and preparation equipment of antistatic color master batch with improved color stability

Abstract

The application discloses a preparation method and preparation equipment of antistatic color master batch with improved color stability, and comprises the following steps: step one: carrier grinding, after mixing the carrier and water according to a mass ratio of 8:3, the mixture is put into a carrier grinding device for grinding; step S2: colorant grinding, after mixing the colorant and water according to a mass ratio of 8:3, the mixture is put into a colorant grinding device for grinding; step S3: ingredient grinding, after mixing the ingredient and water according to a mass ratio of 7:3, the mixture is put into an ingredient grinding device for grinding; step S4: mixing ingredients, the carrier, the colorant and the ingredient are put into a mixing tank according to a mass ratio of 9:2:3 and stirred and mixed for n; and step S5: extruding and granulating.The preparation method and preparation equipment of antistatic color master batch with improved color stability are simple in structure and high in efficiency, the stability of the color master batch can be improved by adding zinc oxide powder material, and the color stability of the color master batch is improved.

Description

Technical Field

[0001] This invention belongs to the field of color masterbatch preparation technology, specifically relating to a method and equipment for preparing antistatic color masterbatch that improves color stability. Background Technology

[0002] With technological advancements, color masterbatches are now added during plastic processing to enhance aesthetics, decoration, identification, weather resistance, mechanical properties, and optical performance. When using color masterbatches, the pigments are pretreated and uniformly dispersed in the carrier resin, significantly improving dispersion and coloring efficiency. This method offers advantages such as simple operation, low cost, and no environmental pollution. Color masterbatch coloring is currently the most common plastic coloring method. Color masterbatches generally consist of three parts: a colorant, a carrier, and a dispersant. After being mixed in a high-speed mixer, they are crushed, extruded, and granulated. Color masterbatches offer significant advantages in plastic processing, including high concentration, good dispersibility, and cleanliness.

[0003] However, current masterbatches do not have antistatic properties, which can easily lead to bacterial contamination and safety issues. Furthermore, the structure and color of masterbatches prepared in the current technology are not stable enough, resulting in poor quality. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a method and equipment for preparing antistatic masterbatches that improve color stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A method for preparing antistatic masterbatch with improved color stability includes the following steps:

[0007] Step 1: Carrier grinding. The carrier is prepared by mixing PT resin, polyterephthalate and acrylonitrile in a certain proportion. The mixed carrier and water are mixed at a mass ratio of 8:3 and then placed in a carrier grinding device for grinding. The grinding time is 30-45 minutes.

[0008] Step S2: Pigment grinding. The pigment is prepared by mixing zinc sulfide and anatase titanium dioxide in a mass ratio of 2:5. The pigment and water are mixed in a mass ratio of 8:3 and then put into a pigment grinding device for grinding. The grinding time is 20-30 minutes.

[0009] Step S3: Ingredient mixing and grinding. The ingredients are prepared by mixing zinc oxide powder, dispersant, flame retardant, antistatic agent and plasticizer in a certain proportion. The mixed ingredients and water are mixed in a mass ratio of 7:3 and then put into the ingredient grinding device for grinding. The grinding time is 30 to 45 minutes.

[0010] Step S4: Mixing ingredients. The carrier, colorant, and ingredients obtained in steps S1 to S3 are placed into a mixing tank in a mass ratio of 9:2:3 and stirred for 10 to 30 minutes.

[0011] Step S5: Extrusion granulation. The mixture obtained in step S4 is put into an extruder for heating and extrusion. The mixture is extruded and granulated by the extruder and then cut and granulated by the pelletizer to obtain antibacterial and antiviral masterbatch.

[0012] Furthermore, the PT resin, polyterephthalate and acrylonitrile are mixed in a mass ratio of 5:3:2 to obtain the product.

[0013] An antistatic masterbatch preparation device for improving color stability includes a raw material grinding device, a proportioning and mixing device, and an extrusion granulation device. The raw material grinding device includes a first frame, a grinding chamber at the left end of the first frame, a first feed port at the upper end of the first frame, and a first discharge port at the lower end of the first frame.

[0014] The mixing device includes a mixing tank, the upper end of which is provided with a plurality of first feed hoppers, the first feed hoppers being connected to the first discharge port via pipes, the first feed hoppers being provided with weighing sensors and first control valves, the upper end of which is provided with a second drive motor, the lower end of which is provided with a first stirring shaft, the first stirring shaft being provided with a plurality of stirring paddles, and the lower end of which is provided with a first discharge pipe.

[0015] The extrusion granulation device includes an extruder, a second feed hopper at the left end of the extruder, the second feed hopper being connected to the first discharge pipe via a pipe, a spiral stirring blade inside the extruder, a third drive motor at the left end of the extruder, the spiral stirring blade being connected to the third drive motor, a second discharge port at the lower right end of the extruder, a strip-making mold inside the second discharge port, and a first heating jacket on the outside of the extruder.

[0016] Furthermore, the grinding chamber includes a material guiding zone, a stirring zone, a crushing zone, and a grinding zone, which are arranged sequentially from top to bottom. The grinding zone contains grinding balls that are matched to the grinding zone. A first connecting post is located at the upper end of each grinding ball. A first baffle post is located at the upper end of the first connecting post, which corresponds to the lower end of the crushing zone. A second connecting post is located at the upper end of the first baffle post, and several first crushing blades are distributed on the second connecting post. Several second crushing blades are located at the upper end of the crushing zone, and the first and second crushing blades are matched to each other. A third connecting post is located at the upper end of the second connecting post, and several push plates are located on the third connecting post, which corresponds to the stirring zone. A fourth connecting post is located at the upper end of the third connecting post, and several guide plates are located on the fourth connecting post, which are matched to the material guiding zone.

[0017] Furthermore, the guide plate is provided with a cutting blade, which is located at the front end of the guide plate in the rotation direction.

[0018] Furthermore, the upper end of the fourth connecting column is provided with a baffle, the upper end of the baffle is provided with a first rotating shaft, the first rotating shaft is mounted on the upper end of the first frame through a bearing, the upper end of the first rotating shaft is provided with a first sprocket, the right end of the first frame is provided with a mounting cavity, the mounting cavity is provided with a first drive motor, the first drive motor passes through the mounting cavity and is provided with a second sprocket, the first sprocket and the second sprocket are connected by a chain.

[0019] Furthermore, the upper end of the first stirring shaft is provided with a plurality of first support rods, and the end of the first support rod is provided with a scraper, the scraper corresponding to the inner wall of the mixing tank.

[0020] Furthermore, the grinding and granulation device includes a second frame, a cooling device, and a granulation device. The extruder is installed at the left end of the second frame. The cooling device includes a cooling pool, which is installed in the middle of the second frame. Both ends of the cooling pool are provided with a first guide roller and a second guide roller. The first guide roller is located at the upper end of the cooling pool, and the second guide roller is located inside the cooling pool. The cooling water in the cooling pool covers the second guide roller.

[0021] The pelletizing device includes a pelletizing box, which is installed at the right end of the second frame. A third guide roller is provided at the left end of the pelletizing box, and a pelletizing roller is provided at the right side of the third guide roller. A fourth drive motor is provided at the front end of the pelletizing box, and the pelletizing roller is connected to the fourth drive motor. A feeding guide plate is provided at the right end of the pelletizing box.

[0022] Furthermore, the cooling device includes an inlet pipe and an outlet pipe. One end of the inlet pipe is connected to the cooling pool, and the other end of the inlet pipe is equipped with an inlet valve. One end of the outlet pipe is connected to the cooling pool, and the other end of the outlet pipe is equipped with an outlet valve. The first guide roller and the second guide roller are provided with a plurality of first guide grooves. The strip forming mold is provided with a plurality of forming holes, and the forming holes correspond one-to-one with the first guide grooves. The third guide roller is provided with a plurality of second guide grooves, and the second guide grooves correspond one-to-one with the first guide grooves. There are two third guide rollers, which are arranged vertically. The pelletizing roller includes a roller body, and the roller body is provided with a plurality of pelletizing blades. There are two pelletizing rollers, which are arranged vertically.

[0023] This invention discloses a method and equipment for preparing antistatic masterbatch with improved color stability. Compared with the prior art, its advantages lie in the fact that the raw materials are ground, mixed, and extruded and granulated sequentially through a raw material grinding device, a proportioning and mixing device, and an extrusion granulation device, thereby completing the preparation of antibacterial and antiviral masterbatch. The structure is simple and efficient, and the preparation efficiency and quality of the masterbatch are also high. By adding zinc oxide powder, the masterbatch is given a micro-nano structure, which increases the stability of the masterbatch. This allows the zinc oxide powder to maintain the color stability of the masterbatch and also to slowly release metal ions or achieve contact sterilization through adhesion, thus providing the masterbatch with antibacterial and antiviral functions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the raw material grinding device according to a preferred embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the proportioning and mixing device according to a preferred embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the extrusion granulation apparatus according to a preferred embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the cooling pool according to a preferred embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of a portion A of a preferred embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the pelletizing roller according to a preferred embodiment of the present invention.

[0031] The reference numerals in the accompanying drawings include: 100, raw material grinding device; 110, first frame; 121, grinding zone; 122, crushing zone; 123, mixing zone; 124, material guiding zone; 130, mounting cavity; 131, first drive motor; 132, second sprocket; 140, grinding ball; 141, first connecting column; 142, first baffle column; 150, second connecting column; 151, first crushing blade; 152, second crushing blade; 160, third connecting column; 161, push plate; 170, fourth connecting column; 171, guide plate; 180, baffle; 181, first rotating shaft; 182, first sprocket; 190, chain; 200, proportioning and mixing device; 210, mixing tank; 211, first feed hopper; 212, first discharge hopper. 220. Pipe; 230. Second drive motor; 231. First stirring shaft; 240. Stirring paddle; 241. First support rod; 300. Scraper; 310. Extrusion granulation device; 311. Extruder; 312. Second feed hopper; 320. Second discharge port; 330. Third drive motor; 340. Spiral stirring blade; 350. First heating jacket; 350. Strip forming mold; 351. Forming hole; 400. Second frame; 410. Cooling pool; 420. Water inlet pipe; 421. Water inlet valve; 430. Water outlet pipe; 431. Water outlet valve; 441. First guide roller; 442. Second guide roller; 450. Third guide roller; 451. Second guide groove; 460. Pelletizing roller; 461. Pelletizing blade; 470. Pelletizing box. Detailed Implementation

[0032] This invention discloses a method and equipment for preparing antistatic masterbatch with improved color stability. The specific implementation of this invention will be further described below with reference to preferred embodiments.

[0033] See attached diagram. Figure 1-7 , Figure 1 This is a schematic diagram of a preferred embodiment of the present invention. Figure 2 This is a schematic diagram of the raw material grinding device according to a preferred embodiment of the present invention. Figure 3 This is a schematic diagram of the proportioning and mixing device according to a preferred embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of the extrusion granulation apparatus according to a preferred embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of the cooling pool according to a preferred embodiment of the present invention. Figure 6 This is a schematic diagram of a portion A of a preferred embodiment provided by the present invention. Figure 7 This is a schematic diagram of the structure of the pelletizing roller according to a preferred embodiment of the present invention.

[0034] Preferred embodiment.

[0035] This embodiment provides a method for preparing antistatic masterbatch with improved color stability, including the following steps:

[0036] Step 1: Carrier grinding. The carrier is prepared by mixing PT resin, polyterephthalate and acrylonitrile in a certain proportion. The mixed carrier and water are mixed at a mass ratio of 8:3 and then placed in a carrier grinding device for grinding. The grinding time is 30-45 minutes.

[0037] Step S2: Pigment grinding. The pigment is prepared by mixing zinc sulfide and anatase titanium dioxide in a mass ratio of 2:5. The pigment and water are mixed in a mass ratio of 8:3 and then put into a pigment grinding device for grinding. The grinding time is 20-30 minutes.

[0038] Step S3: Ingredient mixing and grinding. The ingredients are prepared by mixing zinc oxide powder, dispersant, flame retardant, antistatic agent and plasticizer in a certain proportion. The mixed ingredients and water are mixed in a mass ratio of 7:3 and then put into the ingredient grinding device for grinding. The grinding time is 30 to 45 minutes.

[0039] Step S4: Mixing ingredients. The carrier, colorant and ingredients obtained in steps S1 to S3 are placed into mixing tank 210 in a mass ratio of 9:2:3 and stirred for 10 to 30 minutes.

[0040] Step S5: Extrusion granulation. The mixture obtained in step S4 is placed into an extruder 310 for heating and extrusion. The mixture is extruded and granulated by the extruder 310 and then cut and granulated by a pelletizer to obtain antibacterial and antiviral masterbatch.

[0041] Furthermore, the PT resin, polyterephthalate and acrylonitrile are mixed in a mass ratio of 5:3:2 to obtain the product.

[0042] Zinc oxide powder can not only add micro-nano structures to color masterbatches, increasing their stability and allowing them to maintain color stability, but also slowly release metal ions or adhere to the surface to achieve contact sterilization, thus providing antibacterial and antiviral functions to the color masterbatches.

[0043] This embodiment also provides an antistatic masterbatch preparation device for improving color stability, including a raw material grinding device 100, a proportioning and mixing device 200, and an extrusion granulation device 300. The raw material grinding device 100 includes a first frame 110, a grinding chamber at the left end of the first frame 110, a first feed inlet at the upper end of the first frame 110, and a first discharge outlet at the lower end of the first frame 110. The number of raw material grinding devices 100 is three, which are respectively a carrier grinding device, a colorant grinding device, and a batching grinding device, used for grinding the carrier, colorant, and batching material, respectively.

[0044] The mixing device 200 includes a mixing tank 210. The upper end of the mixing tank 210 is provided with a plurality of first feed hoppers. The first feed hoppers are connected to the first discharge port through pipes. The first feed hoppers are provided with weighing sensors and first control valves. The upper end of the mixing tank 210 is provided with a second drive motor 220. The lower end of the second drive motor 220 is provided with a first stirring shaft 230. The first stirring shaft 230 is provided with a plurality of stirring paddles 231. The lower end of the mixing tank 210 is provided with a first discharge pipe 212.

[0045] The extrusion granulation device 300 includes an extruder 310. The left end of the extruder 310 is provided with a second feed hopper, which is connected to the first discharge pipe 212 through a pipe. The extruder 310 is provided with a spiral stirring blade 330. The left end of the extruder 310 is provided with a third drive motor 320, which is connected to the spiral stirring blade 330. The lower right end of the extruder 310 is provided with a second discharge port 312, which is provided with a strip forming mold 350. The outer side of the extruder 310 is provided with a first heating jacket 340.

[0046] Further, the grinding chamber includes a guiding zone 124, a stirring zone 123, a crushing zone 122, and a grinding zone 121, which are arranged sequentially from top to bottom. Grinding balls 140 are provided within the grinding zone 121, and the grinding balls 140 are matched with the grinding zone 121. A first connecting post 141 is provided at the upper end of the grinding balls 140, and a first baffle post 142 is provided at the upper end of the first connecting post 141. The first baffle post 142 corresponds to the lower end of the crushing zone 122, and a second connecting post 142 is provided at the upper end of the first baffle post 142. The second connecting column 150 has several first crushing blades 151 distributed on it. The upper end of the crushing zone 122 is provided with several second crushing blades 152. The first crushing blades 151 and the second crushing blades 152 are matched. The upper end of the second connecting column 150 is provided with a third connecting column 160. The third connecting column 160 is provided with several push plates 161, which correspond to the stirring zone 123. The upper end of the third connecting column 160 is provided with a fourth connecting column 170. The fourth connecting column 170 is provided with several guide plates 171, which are matched with the guiding zone 124. The feeding zone 124, stirring zone 123, crushing zone 122 and grinding zone 121 are respectively used for introducing, stirring, crushing and grinding the color masterbatch raw materials. During the stirring process, the stirring zone 123 can be used to place the raw materials to accumulate in the stirring zone 123, thereby ensuring subsequent crushing and grinding. The crushing zone 122 is used to crush the color masterbatch raw materials and reduce the subsequent grinding pressure.

[0047] Furthermore, the guide plate 171 is provided with a cutting blade, which is located at the front end of the guide plate 171 in the rotation direction. The cutting blade can also play a certain cutting role, cutting some slightly larger raw materials into smaller pieces.

[0048] Furthermore, the upper end of the fourth connecting column 170 is provided with a baffle 180, and the upper end of the baffle 180 is provided with a first rotating shaft 181. The first rotating shaft 181 is mounted on the upper end of the first frame 110 through a bearing. The upper end of the first rotating shaft 181 is provided with a first sprocket 182. The right end of the first frame 110 is provided with a mounting cavity 130. The mounting cavity 130 is provided with a first drive motor 131. The first drive motor 131 passes through the mounting cavity 130 and is provided with a second sprocket 132. The first sprocket 182 and the second sprocket 132 are connected by a chain 190. When the first drive motor 131 starts, it drives the second sprocket 132 to rotate, and then drives the first sprocket 182 to rotate through the chain 190, which in turn drives the first rotating shaft 181 to rotate, thereby driving the grinding ball 140 to rotate. That is, the grinding ball 140 is used to grind the carrier, pigment and ingredients.

[0049] Furthermore, the upper end of the first stirring shaft 230 is provided with a plurality of first support rods 240, and the end of the first support rods 240 is provided with a scraper 241, the scraper 241 corresponding to the inner wall of the mixing tank 210. The scraper 241 can continuously scrape the inner wall of the mixing tank 210 to prevent the color masterbatch raw material from adhering to the mixing tank 210.

[0050] Furthermore, the grinding and granulation apparatus includes a second frame 400, a cooling device, and a granulation device. The extruder 310 is installed at the left end of the second frame 400. The cooling device includes a cooling pool 410, which is installed in the middle of the second frame 400. Both ends of the cooling pool 410 are provided with a first guide roller 441 and a second guide roller 442. The first guide roller 441 is located at the upper end of the cooling pool 410, and the second guide roller 442 is located inside the cooling pool 410. The cooling water in the cooling pool 410 covers the second guide roller 442.

[0051] The pelletizing device includes a pelletizing box 470, which is installed at the right end of the second frame 400. A third guide roller 450 is provided at the left end of the pelletizing box 470, and a pelletizing roller 460 is provided at the right side of the third guide roller 450. A fourth drive motor is provided at the front end of the pelletizing box 470, and the pelletizing roller 460 is connected to the fourth drive motor. A feeding guide plate 171 is provided at the right end of the pelletizing box 470.

[0052] Further, the cooling device includes an inlet pipe 420 and an outlet pipe 430. One end of the inlet pipe 420 is connected to the cooling pool 410, and the other end of the inlet pipe 420 is provided with an inlet valve 421. One end of the outlet pipe 430 is connected to the cooling pool 410, and the other end of the outlet pipe 430 is provided with an outlet valve 431. The first guide roller 441 and the second guide roller 442 are provided with a plurality of first guide grooves. The strip forming mold 350 is provided with a plurality of forming holes 351, and the forming holes 351 correspond one-to-one with the first guide grooves. The third guide roller 450 is provided with a plurality of second guide grooves 451, and the second guide grooves 451 correspond one-to-one with the first guide grooves. There are two third guide rollers 450, and the two third guide rollers 450 are arranged vertically. The pelletizing roller 460 includes a roller body, and the roller body is provided with a plurality of pelletizing blades 461. There are two pelletizing rollers 460, and the two pelletizing rollers 460 are arranged vertically.

[0053] It is worth mentioning that the technical features such as zinc oxide powder involved in this patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted using conventional choices in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated in detail.

[0054] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A method for preparing an antistatic color master batch with improved color stability, characterized in that, Includes the following steps: Step 1: Carrier grinding. The carrier is prepared by mixing PT resin, polyterephthalate and acrylonitrile in a mass ratio of 5:3:

2. The mixed carrier and water are mixed in a mass ratio of 8:3 and then placed in a carrier grinding device for grinding. The grinding time is 30~45 minutes. Step S2: Pigment grinding. The pigment is prepared by mixing zinc sulfide and anatase titanium dioxide in a mass ratio of 2:

5. The pigment and water are mixed in a mass ratio of 8:3 and then put into a pigment grinding device for grinding. The grinding time is 20~30 minutes. Step S3: Ingredient mixing and grinding. The ingredients are prepared by mixing zinc oxide powder, dispersant, flame retardant, antistatic agent and plasticizer in a certain proportion. The mixed ingredients and water are mixed in a mass ratio of 7:3 and then put into the ingredient grinding device for grinding. The grinding time is 30~45 minutes. Step S4: Mixing ingredients. The carrier, pigment and ingredients obtained in steps S1 to S3 are placed into the mixing tank (210) in a mass ratio of 9:2:3 and stirred for 10 to 30 minutes. Step S5: Extrusion granulation. The mixture obtained in step S4 is put into an extruder (310) for heating and extrusion. It is extruded and granulated through the extruder (310) and then cut and granulated by a pelletizer to obtain antibacterial and antiviral masterbatch.

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