阅读说明：本技术 一种耐高温、抗氧化聚丙烯色母粒及其制备工艺 (High-temperature-resistant and antioxidant polypropylene color master batch and preparation process thereof ) 是由 王斌 于 2020-04-16 设计创作，主要内容包括：本发明提供了一种耐高温、抗氧化聚丙烯色母粒,包括以下重量份原料：50-60份聚丙烯树脂,20-30份颜料,10-15份分散剂,0.5-2份抗氧剂,0.5-2份光稳定剂,0.5-1偶联剂,本发明公开了该色母粒的制备工艺,通过设计在挤压壳体内设有螺杆组件和加热组件,从而对挤压壳体内各区域段的温度进行精确控制,提高螺杆挤出机挤出成型效率。(The invention provides a high-temperature-resistant and antioxidant polypropylene color master batch, which comprises the following raw materials in parts by weight: 50-60 parts of polypropylene resin, 20-30 parts of pigment, 10-15 parts of dispersing agent, 0.5-2 parts of antioxidant, 0.5-2 parts of light stabilizer and 0.5-1 part of coupling agent.)

1. The high-temperature-resistant and antioxidant polypropylene color master batch is characterized by comprising the following raw materials in parts by weight:

50-60 parts of polypropylene resin

20-30 parts of pigment

10-15 parts of dispersant

0.5-2 parts of antioxidant

0.5-2 parts of light stabilizer

0.5-1 part of coupling agent

The pigment is one or more of iron oxide red, carbon black, lead chrome yellow, zinc chrome yellow, chromium oxide green and lead chrome green, iron blue, cobalt blue and ultramarine;

the dispersing agent is one or more of sodium stearate, magnesium stearate, calcium stearate, aluminum stearate, ferric stearate and potassium stearate;

the antioxidant is one of antioxidant 1076 or antioxidant 1010;

the light stabilizer is a mixture of titanium dioxide and benzophenone, and the mixing weight ratio of the titanium dioxide to the benzophenone is 1: 1.5-2;

the coupling agent is a mixture of dimethyl amino silane, tributyl amino methyl silane and hexadecyl methyl cyclooctane siloxane, and the weight ratio of the mixture of the dimethyl amino silane, the tributyl amino methyl silane and the hexadecyl methyl cyclooctane is 1:1.4-1.6: 1.9-2.1.

2. The preparation process of the high-temperature-resistant and antioxidant polypropylene color master batch as claimed in claim 1, which is characterized by comprising the following steps:

s01: weighing the following raw materials, by weight, 50-60 parts of polypropylene resin, 20-30 parts of pigment, 10-15 parts of dispersing agent, 0.5-2 parts of antioxidant, 0.5-2 parts of light stabilizer and 0.5-1 part of coupling agent;

s02, sequentially adding the polypropylene resin, the pigment, the dispersing agent and the coupling agent in the proportion into a high-speed stirrer for mixing and stirring, wherein the rotating speed of the high-speed stirrer is 500-550rad/min, the stirring temperature is 80-90 ℃, and the stirring time is 3-5 min;

s03: sequentially adding the antioxidant and the light stabilizer in the proportion into a high-speed stirrer for mixing and stirring until the mixture is uniform, wherein the rotating speed of the high-speed stirrer is 600-650rad/min, the stirring temperature is 110-120 ℃, and the stirring time is 5-10 min;

s04: conveying the mixture prepared in the step S03 to a screw extruder through a feeder, and extruding and molding, wherein the screw extrusion temperature is as follows: the feeding section is 110-120 ℃, the melting section is 130-140 ℃, the homogenizing section is 140-150 ℃ and the die head temperature is 140-150 ℃.

3. The preparation process of the high-temperature-resistant and antioxidant polypropylene color master batch as claimed in claim 2, wherein the preparation process comprises the following steps: the screw extruder comprises an extruding shell (1), wherein a feed inlet (2) is formed in one side of the top end of the extruding shell (1), a driving motor (3) is fixed on the left side of the extruding shell (1), the output end of the driving motor (3) is connected with a rotating shaft (4), the rotating shaft (4) penetrates through a coupler to penetrate through the extruding shell (1) and extend to the inside of the extruding shell (1), a screw assembly is connected to the rotating shaft (4), a reinforcing rod (5) is arranged at the tail end of the screw assembly, a die head (6) is arranged at the tail end of the reinforcing rod (5), and a ring is arranged around the screw assembly, and a heating assembly corresponding to the screw assembly is arranged in the extruding shell (1).

4. The preparation process of the high-temperature-resistant and antioxidant polypropylene color master batch as claimed in claim 3, wherein the preparation process comprises the following steps: from the direction of driving motor (3), screw assembly includes first screw rod (7), second screw rod (8) and third screw rod (9) that length is the same in proper order, the diameter ratio of first screw rod (7), second screw rod (8) and third screw rod (9) is 1:1.5:2, the junction of first screw rod (7) and second screw rod (8) is equipped with first adapter sleeve (10), the junction of second screw rod (8) and third screw rod (9) is equipped with second adapter sleeve (11).

5. The preparation process of the high temperature resistant and antioxidant polypropylene color master batch according to claim 4, characterized in that: keep away from pivot (4), the one end of first screw rod (7) is equipped with first installation pole (29), is close to first screw rod (7), the one end of second screw rod (8) is equipped with second installation pole (30), first installation pole (29) with the equal threaded connection of second installation pole (30) is in first adapter sleeve (10), the other end of second screw rod (8) is equipped with third installation pole (31), is close to second screw rod (8), the one end of third screw rod (9) is equipped with fourth installation pole (32), third installation pole (31) with the equal threaded connection of fourth installation pole (32) is in second adapter sleeve (11).

6. The preparation process of the high-temperature-resistant and antioxidant polypropylene color master batch according to claim 5, characterized in that: heating element includes first axle sleeve (12) and second axle sleeve (13), first axle sleeve (12) are fixed pivot (4) anterior segment, second axle sleeve (13) are fixed on stiffener (5), first axle sleeve (12), first adapter sleeve (10), second adapter sleeve (11) and second axle sleeve (13) will extrusion casing (1) divide into three region end, be feeding section, melting section and homogenization section in proper order, and feeding section, melting section and homogenization section correspond and are equipped with first temperature sensor (14), second temperature sensor (15) and third temperature sensor (16).

7. The preparation process of the high temperature resistant and antioxidant polypropylene color master batch as claimed in claim 6, wherein the preparation process comprises the following steps: be equipped with three first spliced poles of group (17) on first axle sleeve (12), three groups first spliced pole (17) supports jointly and has first support ring (18), be equipped with three second spliced poles of group (19) on first connecting sleeve (10), three groups second spliced pole (19) support jointly and have second support ring (20), be equipped with three third spliced poles of group (21) on second connecting sleeve (11), three groups third spliced pole (21) support jointly and have third support ring (22), be equipped with three fourth spliced poles of group (23) on second axle sleeve (13), three groups fourth spliced pole (23) support jointly and have fourth support ring (24), just be equipped with multiunit first heating pipe (25) between first support ring (18) and second support ring (20), be equipped with multiunit second heating pipe (26) between second support ring (20) and third support ring (22), a plurality of groups of third heating pipes (27) are arranged between the third supporting ring (22) and the fourth supporting ring (24).

8. The preparation process of the high temperature resistant and antioxidant polypropylene color masterbatch according to claim 7 is characterized in that a P L C controller (28) is arranged on one side of the extrusion shell (1), and the P L C controller (28) is electrically connected with the first heating tube (25), the second heating tube (26), the third heating tube (27), the first temperature sensor (14), the second temperature sensor (15), the third temperature sensor (16) and the driving motor (3).

Technical Field

The invention relates to the technical field of color master batches, in particular to a high-temperature-resistant and antioxidant polypropylene color master batch and a preparation process thereof.

Background

The color master batch is called color master batch and also called color seed, and is a special colorant for novel high polymer materials, also called pigment preparation. The color master is mainly used for plastics. The color master batch is composed of three basic elements of pigment or dye, carrier and additive, and is an aggregate prepared by uniformly loading an excessive amount of pigment in resin, which can be called pigment concentrate, so that its tinting strength is higher than that of the pigment itself, and the color master batches can be classified into PE color master batch, PP color master batch, ABS color master batch, PVC color master batch, EVA color master batch and the like according to the carrier classification.

In the production process of the existing PP color master batch, because the temperature in a screw extruder is not well controlled during injection molding, the color master batch subjected to extrusion molding has certain difference and influences subsequent use, and therefore, the invention researches and develops the high-temperature-resistant and antioxidant polypropylene color master batch and the preparation process thereof.

Disclosure of Invention

The invention provides a high-temperature-resistant and antioxidant polypropylene color master batch and a preparation process thereof, which are used for solving the technical problem that the subsequent use is influenced by certain difference of the color master batch formed by extrusion because the temperature in a screw extruder is not well controlled during injection molding in the production process of the conventional PP color master batch provided in the background art.

In order to solve the technical problems, the invention adopts the technical scheme that: a high-temperature-resistant and antioxidant polypropylene color master batch comprises the following raw materials in parts by weight:

50-60 parts of polypropylene resin

20-30 parts of pigment

10-15 parts of dispersant

0.5-2 parts of antioxidant

0.5-2 parts of light stabilizer

0.5-1 part of coupling agent

The pigment is one or more of iron oxide red, carbon black, lead chrome yellow, zinc chrome yellow, chromium oxide green and lead chrome green, iron blue, cobalt blue and ultramarine;

the dispersing agent is one or more of sodium stearate, magnesium stearate, calcium stearate, aluminum stearate, ferric stearate and potassium stearate;

the antioxidant is one of antioxidant 1076 or antioxidant 1010.

The light stabilizer is a mixture of titanium dioxide and benzophenone, and the mixing weight ratio of the titanium dioxide to the benzophenone is 1: 1.5-2;

the coupling agent is a mixture of dimethyl amino silane, tributyl amino methyl silane and hexadecyl methyl cyclooctane siloxane, and the weight ratio of the mixture of the dimethyl amino silane, the tributyl amino methyl silane and the hexadecyl methyl cyclooctane is 1:1.4-1.6: 1.9-2.1.

The preparation process of the high-temperature-resistant and antioxidant polypropylene color master batch comprises the following steps:

s01: weighing the following raw materials, by weight, 50-60 parts of polypropylene resin, 20-30 parts of pigment, 10-15 parts of dispersing agent, 0.5-2 parts of antioxidant, 0.5-2 parts of light stabilizer and 0.5-1 part of coupling agent;

s02, sequentially adding the polypropylene resin, the pigment, the dispersing agent and the coupling agent in the proportion into a high-speed stirrer for mixing and stirring, wherein the rotating speed of the high-speed stirrer is 500-550rad/min, the stirring temperature is 80-90 ℃, and the stirring time is 3-5 min;

s03: sequentially adding the antioxidant and the light stabilizer in the proportion into a high-speed stirrer for mixing and stirring until the mixture is uniform, wherein the rotating speed of the high-speed stirrer is 600-650rad/min, the stirring temperature is 110-120 ℃, and the stirring time is 5-10 min;

s04: conveying the mixture prepared in the step S03 to a screw extruder through a feeder, and extruding and molding, wherein the screw extrusion temperature is as follows: the feeding section is 110-120 ℃, the melting section is 130-140 ℃, the homogenizing section is 140-150 ℃ and the die head temperature is 140-150 ℃.

Further, the screw extruder includes the extrusion casing, extrusion casing top one side is equipped with the feed inlet, the left side of extrusion casing is fixed with driving motor, the driving motor output is connected with the pivot, the pivot passes through the shaft coupling and crosses the extrusion casing and extends to the inside of extrusion casing, be connected with screw assembly in the pivot, screw assembly's end is equipped with the stiffener, the end of stiffener is equipped with the die head, encircles screw assembly's all around, be equipped with in the extrusion casing with the corresponding heating element of screw assembly.

Further, from the direction of driving motor, screw assembly includes first screw rod, second screw rod and the third screw rod that length is the same in proper order, the diameter ratio of first screw rod, second screw rod and third screw rod is 1:1.5:2, the junction of first screw rod and second screw rod is equipped with first adapter sleeve, the junction of second screw rod and third screw rod is equipped with the second adapter sleeve.

Further, keep away from the pivot, the one end of first screw rod is equipped with first installation pole, is close to first screw rod, the one end of second screw rod is equipped with the second installation pole, first installation pole with the equal threaded connection of second installation pole is in the first connecting sleeve, the other end of second screw rod is equipped with the third installation pole, is close to the second screw rod, the one end of third screw rod is equipped with the fourth installation pole, the equal threaded connection of third installation pole with the fourth installation pole is in the second connecting sleeve.

Further, heating element includes first axle sleeve and second axle sleeve, first axle sleeve is fixed the pivot anterior segment, the second axle sleeve is fixed on the stiffener, first axle sleeve, first adapter sleeve, second adapter sleeve and second axle sleeve will the extrusion casing divide into three regional end, is feeding section, melting section and homogenization section in proper order, and feeding section, melting section and homogenization section correspond and are equipped with first temperature sensor, second temperature sensor and third temperature sensor.

Further, be equipped with three first spliced poles of group, three groups on the primary shaft cover first spliced pole supports jointly and has first support ring, be equipped with three groups of second spliced poles on the first spliced pole, three groups the second spliced pole supports jointly and has the second support ring, be equipped with three groups of third spliced poles, three groups on the second spliced pole the third spliced pole supports jointly and has the third support ring, be equipped with three groups of fourth spliced poles, three groups on the second shaft cover the fourth spliced pole supports jointly and has the fourth support ring, just be equipped with multiunit first heating pipe between first support ring and the second support ring, be equipped with multiunit second heating pipe between second support ring and the third support ring, be equipped with multiunit third heating pipe between third support ring and the fourth support ring.

Furthermore, one side of the extrusion shell is provided with a P L C controller, the P L C controller all with the first heating pipe, the second heating pipe, the third heating pipe, the first temperature sensor, the second temperature sensor, the third temperature sensor and the driving motor electric connection.

Compared with the prior art, the invention has the beneficial effects that:

1. the extrusion shell is divided into three area ends by the first shaft sleeve, the first connecting sleeve, the second connecting sleeve and the second shaft sleeve, the feeding section, the melting section and the homogenizing section are correspondingly provided with the first temperature sensor and the first heating pipe, the second temperature sensor and the second heating pipe, the third temperature sensor and the third heating pipe, the feeding section, the melting section and the homogenizing section are driven by the driving motor to rotate the plurality of support rings, so that the plurality of heating pipes are driven to rotate, the P L C controller is used for heating the raw materials by intermittently starting the second heating pipe or the third heating pipe under the continuous heating of the first heating pipe according to the temperature requirement of each area section, the temperature of each area section can be accurately controlled, and the extrusion molding efficiency of the extruder is improved;

2. the screw assembly is arranged in the screw extruder, and is divided into three groups of first screws, second screws and third screws with the same length, the diameters of the first screws, the second screws and the third screws are gradually increased, namely the depth of screw grooves is gradually reduced, the amount of raw materials entering from a feed inlet is large, the amount of extruded raw materials is small, and when the raw materials are extruded, part of the raw materials are extruded for multiple times, so that the extrusion forming effect is good.

Drawings

FIG. 1 is a schematic view of the overall structure of a screw extruder according to the present invention;

FIG. 2 is an enlarged view of part A of the present invention;

FIG. 3 is an enlarged view of the part B of the present invention;

FIG. 4 is a schematic view of a heating assembly according to the present invention.

In the drawing, 1-an extrusion shell, 2-a feed inlet, 3-a driving motor, 4-a rotating shaft, 5-a reinforcing rod, 6-a die head, 7-a first screw rod, 8-a second screw rod, 9-a third screw rod, 10-a first connecting sleeve, 11-a second connecting sleeve, 12-a first shaft sleeve, 13-a second shaft sleeve, 14-a first temperature sensor, 15-a second temperature sensor, 16-a third temperature sensor, 17-a first connecting column, 18-a first supporting ring, 19-a second connecting column, 20-a second supporting ring, 21-a third connecting column, 22-a third supporting ring, 23-a fourth supporting ring, 24-a fourth supporting ring, 25-a first heating pipe, 26-a second heating pipe, 27-a third heating pipe, 28-P L C controller, 29-a first mounting rod, 30-a second mounting rod, 31-a third mounting rod and 34-a fourth mounting rod.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in many different forms and are not limited to the embodiments described herein, but rather are provided for the purpose of providing a more thorough disclosure of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.