Modified color master batch dyeing process

Abstract

The invention relates to a modified color master batch dyeing process, which comprises the following steps: a filler grinding step; mixing carrier raw materials; a carrier raw material cooling step; a carrier raw material grinding step; mixing and stirring the raw materials; a master batch raw material banburying step; and granulating the modified color master batch, namely extruding and granulating the master batch raw materials subjected to internal mixing in an extruder to obtain the modified color master batch. Colored filler with uniform color is obtained through the filler grinding step, and color carrier raw materials with uniform color are obtained through the carrier raw material mixing step. The carrier raw material agent with uniform color is obtained through the carrier raw material cooling step and the carrier raw material grinding step. The master batch raw material with uniform color is obtained through the raw material mixing and stirring step. The modified color master batch with uniform color is obtained through the master batch raw material banburying step and the modified color master batch granulation step. The modified color master batch obtained by the modified color master batch dyeing process is uniform in color, so that uniform color of a colored product is ensured.

Description

Technical Field

[0001] The present invention relates to the field of modified masterbatch production, and particularly to a dyeing process for modified masterbatch. Background Art

[0002] The full name of masterbatch is plastic masterbatch. Masterbatch is a plastic processing aid developed in the 1980s. It is composed of an excessive amount of chemical additives, carrier resin, dispersant, etc. Masterbatch is an aggregate obtained by uniformly attaching an excessive amount of pigments to the resin. Masterbatch refers to, during the plastic processing and molding process, for the convenience of operation, various additives, fillers required and a small amount of carrier resin are first mixed and kneaded, and then processed through equipment such as an extruder for metering, mixing, melting, extruding, pelletizing, etc. to obtain pelletized materials, which are called masterbatch. Masterbatch is composed of carrier resin, various fillers and various additives. The limit of additives or the content of fillers in masterbatch is several times to more than ten times higher than the required amount in actual plastic products. During the molding process, it is necessary to adjust the ratio of masterbatch to matrix resin according to the content of relevant components in the masterbatch and the amount to be added in the actual product. Masterbatch can usually be divided into ordinary filled masterbatch and functional masterbatch, such as color masterbatch, anti-fog drip masterbatch, etc.

[0003] However, colored masterbatch is an important raw material for manufacturing colored products. In traditional methods for preparing colored masterbatch, such as the technical solution disclosed in the patent with application number CN201610397487.0 and invention name "A high-concentration colored masterbatch and its preparation method", the colors of the produced colored masterbatch are not uniform, resulting in uneven colors of colored products. Summary of the Invention

[0004] Based on this, in view of the technical problem that the colors of colored masterbatch produced by traditional methods for preparing colored masterbatch are not uniform, resulting in uneven colors of colored products, it is necessary to provide a dyeing process for modified masterbatch.

[0005] A dyeing process for modified masterbatch, the process comprising the following steps: Filler grinding step: Mix and stir the filler and color powder according to a mass ratio of 10:1, then conduct grinding treatment, and mix and stir the ground filler and color powder to obtain a colored filler; Carrier raw material mixing step: Mix and stir the carrier raw material, color powder and dispersant evenly according to a mass ratio of 10:1:0.4 to obtain a colored carrier raw material; Carrier raw material cooling step: Cool and dry the colored carrier raw material; Carrier raw material grinding step: Grind the cooled and dried colored carrier raw material and water according to a mass ratio of 7:4 to obtain a carrier raw material agent; Raw material mixing and stirring step: The colored filler, carrier raw material agent, color powder and additives are fully mixed and stirred according to the mass ratio of 2:7:0.5:0.2 to obtain the masterbatch raw material; Masterbatch raw material kneading step: Knead the masterbatch raw material; Modified masterbatch granulation step: Extrude and granulate the kneaded masterbatch raw material in an extruder to obtain the modified masterbatch.

[0006] In one embodiment, the carrier raw material comprises the following components in parts by mass: 10 to 22 parts of polyethylene, 15 to 25 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of polypropylene, 8 to 16 parts of styrene resin, 6 to 12 parts of acrylonitrile, and 6 to 16 parts of poly(propylene naphthalate).

[0007] In one embodiment, the color powder is titanium dioxide.

[0008] In one embodiment, the filler comprises the following components in parts by mass: 10 to 25 parts of barium sulfate powder, 20 to 40 parts of calcium carbonate powder, 10 to 30 parts of mica powder, and 15 to 35 parts of silicon dioxide powder.

[0009] In one embodiment, in the filler grinding step, a three-roll mill is used to grind the filler and the color powder.

[0010] In one embodiment, the dispersant is a mixture of polyamide wax and silicone oil.

[0011] In one embodiment, in the masterbatch raw material kneading step, kneading treatment is carried out in a kneader, the kneading temperature is 180 °C to 210 °C, and the kneading time is 0.5 hour.

[0012] In one embodiment, in the modified masterbatch granulation step, the extruder is a twin-screw extruder, the temperature inside the twin-screw extruder is 280 °C to 320 °C, and the rotation speed is 350 r / min to 380 r / min.

[0013] In one embodiment, the additives comprise the following components in parts by mass: 10 to 20 parts of antioxidant, 15 to 25 parts of plasticizer, 14 to 26 parts of toughening agent, 10 to 20 parts of lubricant, and 25 to 40 parts of modifier.

[0014] In one embodiment, the modifier comprises the following components in parts by mass: 16 to 26 parts of polyethylene glycol, 14 to 22 parts of polyethylene wax, 15 to 23 parts of silicone powder, 17 to 25 parts of pentaerythritol stearate, 13 to 18 parts of oleamide, and 8 to 34 parts of poly(butylene succinate).

[0015] The above-mentioned modified masterbatch dyeing process steps are concise, exquisite, and easy to control, with each step being meticulous. Through the filler grinding step, a colored filler with uniform color is obtained. Through the carrier raw material mixing step, a color carrier raw material with uniform color is obtained. Through the carrier raw material cooling step and the carrier raw material grinding step, a carrier raw material agent with uniform color is obtained. Through the raw material mixing and stirring step, a masterbatch raw material with uniform color is obtained. Through the masterbatch raw material kneading step and the modified masterbatch granulation step, a modified masterbatch with uniform color is obtained. The modified masterbatch obtained by the above-mentioned modified masterbatch dyeing process has uniform color, thus ensuring the uniform color of the colored products and the stable quality of the colored products. Brief Description of the Drawings

[0016] Figure 1 It is a process flow diagram of the modified masterbatch dyeing process in an embodiment. Detailed Embodiments

[0017] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed embodiments of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0018] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0019] In the present invention, unless otherwise clearly specified or defined, the terms "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present invention, unless otherwise clearly specified or defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0022] Please refer to Figure 1 , the present invention provides a modified masterbatch dyeing process, and the process includes the following steps: Step 101: Filler grinding step: Mix and stir the filler and color powder according to a mass ratio of 10:1, then carry out grinding treatment, and mix and stir the ground filler and color powder to obtain a colored filler.

[0023] Among them, in this embodiment, the color powder is titanium dioxide.

[0024] Specifically, mix the filler and color powder according to a mass ratio of 10:1, fully stir in a high-speed mixer, then use a three-roll grinder for grinding treatment, and mix and stir the ground filler and color powder in a high-speed mixer to obtain a colored filler.

[0025] Step 102: Carrier raw material mixing step: Mix and stir the carrier raw material, color powder and dispersant evenly according to a mass ratio of 10:1:0.4 to obtain a colored carrier raw material.

[0026] Among them, in this embodiment, the dispersant is a mixture of polyamide wax and silicone oil.

[0027] Specifically, the carrier raw material, toner, and dispersant are mixed according to a mass ratio of 10:1:0.4, and fully stirred evenly in a high-speed mixer to obtain a colored carrier raw material.

[0028] Step 103: Carrier raw material cooling step: Cool and dry the colored carrier raw material.

[0029] Specifically, the colored carrier raw material is naturally cooled and dried to facilitate later grinding.

[0030] Step 104: Carrier raw material grinding step: Grind the cooled and dried colored carrier raw material and water according to a mass ratio of 7:4 to obtain a carrier raw material agent.

[0031] Specifically, the cooled and dried colored carrier raw material and water are mixed according to a mass ratio of 7:4, and ground using a three-roll mill to obtain a carrier raw material agent.

[0032] Step 105: Raw material mixing and stirring step: Sufficiently mix and stir the colored filler, carrier raw material agent, toner, and additive according to a mass ratio of 2:7:0.5:0.2 to obtain a masterbatch raw material.

[0033] Specifically, the colored filler, carrier raw material agent, toner, and additive are mixed according to a mass ratio of 2:7:0.5:0.2, and fully mixed and stirred in a high-speed mixer to obtain a masterbatch raw material.

[0034] Step 106: Masterbatch raw material kneading step: Knead the masterbatch raw material.

[0035] Specifically, the masterbatch raw material is kneaded in a kneader. The kneading temperature is 180 °C to 210 °C, and the kneading time is 0.5 hours.

[0036] Step 107: Modified masterbatch granulation step: Extrude and granulate the kneaded masterbatch raw material in an extruder to obtain a modified masterbatch.

[0037] Specifically, the kneaded masterbatch raw material is extruded and granulated in an extruder to obtain a modified masterbatch. The extruder is a twin-screw extruder. The temperature inside the twin-screw extruder is 280 °C to 320 °C, and the rotation speed is 350 r / min to 380 r / min.

[0038] In one embodiment, to enhance the antioxidant property of the modified masterbatch, the carrier raw material comprises the following components in parts by mass: 10 to 22 parts of polyethylene, 15 to 25 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of polypropylene, 8 to 16 parts of styrene resin, 6 to 12 parts of acrylonitrile, and 6 to 16 parts of poly(propylene naphthalate). The carrier raw material composed of the above components can enhance the antioxidant property of the modified masterbatch.

[0039] In one embodiment, to increase the structural strength and structural stability of the modified masterbatch, the filler comprises the following components in parts by mass: 10 to 25 parts of barium sulfate powder, 20 to 40 parts of calcium carbonate powder, 10 to 30 parts of mica powder, and 15 to 35 parts of silicon dioxide powder. The filler composed of the above components has excellent corrosion resistance and stable chemical properties. Thus, the structural strength and structural stability of the modified masterbatch are increased.

[0040] In one embodiment, to improve the flexibility and weather resistance of the modified masterbatch, the auxiliary agent comprises the following components in parts by mass: 10 to 20 parts of antioxidant, 15 to 25 parts of plasticizer, 14 to 26 parts of toughening agent, 10 to 20 parts of lubricant, and 25 to 40 parts of modifier. Specifically, the plasticizer is dibutyl phthalate. The antioxidant is antioxidant 1010. The toughening agent is EMA toughening agent. The lubricant is a mixture of calcium stearate and zinc stearate. The auxiliary agent composed of the above components can improve the flexibility and weather resistance of the modified masterbatch.

[0041] In this embodiment, to improve the glossiness of the modified masterbatch, the modifier comprises the following components in parts by mass: 16 to 26 parts of polyethylene glycol, 14 to 22 parts of polyethylene wax, 15 to 23 parts of silicone powder, 17 to 25 parts of pentaerythritol stearate, 13 to 18 parts of oleamide, and 8 to 34 parts of poly(butylene succinate). The modifier composed of the above components can effectively modify the glossiness of the masterbatch and increase the light stability of the modified masterbatch.

[0042] The above-mentioned dyeing process steps of the modified masterbatch are concise and delicate, and easy to control, with each step being carefully executed. Through the filler grinding step, a uniformly colored filler is obtained. Through the carrier raw material mixing step, a uniformly colored color carrier raw material is obtained. Through the carrier raw material cooling step and the carrier raw material grinding step, a uniformly colored carrier raw material agent is obtained. Through the raw material mixing and stirring step, a uniformly colored masterbatch raw material is obtained. Through the masterbatch raw material internal mixing step and the modified masterbatch granulation step, a uniformly colored modified masterbatch is obtained. The modified masterbatch obtained by the above-mentioned dyeing process of the modified masterbatch has a uniform color, thus ensuring the uniform color of the colored product and the stable quality of the colored product.

[0043] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0044] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A modified masterbatch dyeing process, characterized in that: The process comprises the following steps: Filler grinding step: the filler and the color powder are mixed and stirred in a mass ratio of 10:1, and then ground, and the ground filler and the color powder are mixed and stirred to obtain a colored filler; Carrier raw material mixing step: the carrier raw material, the color powder and the dispersant are mixed and stirred in a mass ratio of 10:1:0.4 to obtain a colored carrier raw material; Carrier raw material cooling step: cooling and drying the colored carrier raw material; Carrier raw material grinding step: grinding the cooled and dried colored carrier raw material and water in a mass ratio of 7:4 to obtain a carrier raw material agent; Raw material mixing and stirring step: the colored filler, carrier raw material, color powder and auxiliary agent are fully mixed and stirred in a mass ratio of 2:7:0.5:0.2 to obtain a masterbatch raw material; Masterbatch raw material mixing step: mixing the masterbatch raw material; The modified masterbatch granulation step is to extrude and granulate the masterbatch raw materials after mixing in an extruder to obtain the modified masterbatch.

2. The process according to claim 1, characterized in that The carrier raw material includes the following components in parts by weight: 10 to 22 parts of polyethylene, 15 to 25 parts of ethylene-vinyl acetate copolymer, 20 to 30 parts of polypropylene, 8 to 16 parts of styrene resin, 6 to 12 parts of acrylonitrile and 6 to 16 parts of polytrimethylene naphthalate.

3. The process according to claim 1, characterized in that The toner is titanium dioxide.

4. The process according to claim 1, characterized in that The filler comprises the following components in parts by mass: 10 to 25 parts of barium sulfate powder, 20 to 40 parts of calcium carbonate powder, 10 to 30 parts of mica powder and 15 to 35 parts of silicon dioxide powder.

5. The process according to claim 1, characterized in that In the filler grinding step, a three-roll mill is used to grind the filler and the toner.

6. The process according to claim 1, characterized in that The dispersant is a mixture of polyamide wax and silicone oil.

7. The process according to claim 1, characterized in that In the master batch raw material banburying step, banburying treatment is carried out in a banbury mixer, the banburying temperature is 180 degrees Celsius to 210 degrees Celsius, and the banburying time is 0.5 hours.

8. The process according to claim 1, characterized in that In the modified masterbatch granulation step, the extruder is a twin-screw extruder, the temperature in the twin-screw extruder is 280 degrees Celsius to 320 degrees Celsius, and the rotation speed is 350 r / min to 380 r / min.

9. The process according to claim 1, characterized in that The auxiliary agent includes the following components in parts by weight: 10 to 20 parts of antioxidant, 15 to 25 parts of plasticizer, 14 to 26 parts of toughening agent, 10 to 20 parts of lubricant and 25 to 40 parts of modifier.

10. The process according to claim 9, characterized in that The modifier includes the following components in parts by mass: 16 to 26 parts of polyethylene glycol, 14 to 22 parts of polyethylene wax, 15 to 23 parts of silicone powder, 17 to 25 parts of pentaerythritol stearate, 13 to 18 parts of oleic acid amide and 8 to 34 parts of polybutylene succinate.

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