CN110511483B - Polypropylene raw material mixture with fully dispersed red pigment and preparation method thereof - Google Patents
Polypropylene raw material mixture with fully dispersed red pigment and preparation method thereof Download PDFInfo
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- CN110511483B CN110511483B CN201910751718.7A CN201910751718A CN110511483B CN 110511483 B CN110511483 B CN 110511483B CN 201910751718 A CN201910751718 A CN 201910751718A CN 110511483 B CN110511483 B CN 110511483B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/04—Pigments
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the technical field of polypropylene production, and provides a polypropylene raw material mixture with fully dispersed red pigment and a preparation method thereof, aiming at solving the problem that the polypropylene is poor in color difference caused by the fact that the existing red pigment is not easy to disperse in the polypropylene raw material mixture, wherein the polypropylene raw material mixture comprises the following components in percentage by mass: the polypropylene powder is more than or equal to 48 percent, the red pigment is 27-30 percent, the polyethylene wax is more than or equal to 17 percent, the electrostatic agent is 0.95-1 percent, the silicone powder is 0.05-0.1 percent, and the zinc stearate is 2.5-3 percent, the sum of the mass percentages of the components is 100 percent, the softening point of the polyethylene wax is more than or equal to 120 ℃, and the polypropylene powder, the red pigment, the polyethylene wax and the zinc stearate are firstly mixed by low-speed rotation and then fully mixed by high-speed rotation during preparation. The polypropylene raw material mixture is fully dispersed with permanent bright red, no raw powder is generated, the curing time is prolonged, the service cycle of a spinning assembly is prolonged, the obtained polypropylene fiber has good color, basically no color difference occurs, and the waste silk amount is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of polypropylene production, and particularly relates to a polypropylene raw material mixture with fully dispersed red pigment and a preparation method thereof.
Background
The polypropylene fiber is made from polypropylene resin through melt spinning, and has the characteristics of light weight, flatness, smoothness, high strength, no moisture absorption, acid resistance, alkali resistance and the like. However, polypropylene has poor dyeability, and colored polypropylene is mainly prepared by adding pigment into polypropylene raw material for spinning at present. However, if the color is not sufficiently dispersed in the polypropylene raw material, the color difference is generated in the polypropylene, and the quality of the polypropylene is also affected.
At present, the red pigment is acknowledged in the field to be not easy to disperse in polypropylene raw materials, and the polypropylene raw material mixture formula of the commonly used red pigment is as follows: 39.32% of polypropylene particles, 37.99% of permanent bright red, 19.94% of emulsified mountain wax, 1.33% of electrostatic agent, 1.33% of calcium stearate and 0.09% of silicone powder. The preparation method comprises directly mixing and dispersing the above raw materials or preparing pigment into pre-dispersion to participate in dispersion; the first method has 3-8% of raw powder, so that granulation is difficult to filter, the service cycle of a spinning assembly is shortened by 70%, the waste silk amount is large, and color difference is easy to occur. The second method can improve the dispersion effect, but has the problems of large investment, water pollution and high production cost. Therefore, it is necessary to conduct research for improving the dispersion effect of the red pigment in the polypropylene raw material.
Disclosure of Invention
Aiming at the problem that polypropylene is poor in color difference due to the fact that the existing red pigment is not easy to disperse in the polypropylene raw mixed material, the invention aims to provide the polypropylene raw mixed material with the red pigment fully dispersed.
Another object of the present invention is to provide a process for the preparation of such a polypropylene raw material with a well-dispersed red pigment.
The invention provides the following technical scheme.
A polypropylene raw material mixture with fully dispersed red pigment comprises the following components in percentage by mass: the paint comprises, by mass, not less than 48% of polypropylene powder, 27-30% of red pigment, not less than 17% of polyethylene wax, 0.95-1% of electrostatic agent, 0.05-0.1% of silicone powder and 2.5-3% of flow aid, wherein the sum of the mass percentages of the components is 100%, and the softening point of the polyethylene wax is not less than 120 DEG C
As preferred in the present invention: the red pigment is permanent brilliant red.
As preferred in the present invention: the polyethylene wax is BASF PE 2.
As preferred in the present invention: the glidant is zinc stearate. In the prior art, calcium stearate is used as a release agent of polypropylene, and the inventor finds that zinc stearate is used as a flow aid and remarkably improves the dispersing granulation, especially the spinnability of spinning.
As preferred in the present invention: the paint consists of the following components in percentage by mass: 49.97 percent of MFI20 polypropylene powder, 27.99 percent of permanent brilliant red pigment, 18.19 percent of BASF PE2 polyethylene wax, 2.80 percent of zinc stearate, 0.98 percent of electrostatic agent and 0.07 percent of silicone powder.
As preferred in the present invention: compared with the existing red pigment formula of the polypropylene raw mixed material, the red pigment formula of the polypropylene raw mixed material is improved from three aspects:
firstly, the use amount of polypropylene is increased, the dispersion concentration of the red pigment in the polypropylene raw material mixture is relatively reduced, and the dispersion sufficiency of the red pigment is improved. However, too low a concentration of red pigment may result in too large a masterbatch addition beyond the capability of the metering system and inconvenience to operate. However, when the concentration of the red pigment is reduced a little, the effect of promoting dispersion can not be obviously obtained, so that a sudden change point of the using amount of the polypropylene powder exists, and the dispersion effect is obviously improved. Through a large number of tests and analysis, the relative ratio of the polypropylene to the red pigment is limited, so that when the content of the red pigment is 27-30%, the polypropylene powder is not less than 48%.
And secondly, selecting polypropylene powder with melt flow index MFI of 20 to replace the original polypropylene particle material with MFI of 30, and improving the dispersibility.
Thirdly, polyethylene wax with the softening point more than or equal to 120 ℃ is selected as the dispersing agent. The inventor finds that the polyethylene wax with the softening point not lower than 120 ℃ can keep the solid state of the polyethylene wax in a proper time without softening, thus prolonging the dispersion time of the polypropylene raw material mixture not lower than 20min and promoting the full dispersion of the polypropylene raw material mixture; meanwhile, the later-period curing time is prolonged to 7-8 seconds from 2-3 seconds, so that the best material discharging time is easier to master, and the dispersion effect is greatly improved.
Fourthly, the inventors have conducted extensive studies and found that the dispersion promoting effect is gradually improved with the increase of the amount of the polypropylene powder or the change of the polyethylene wax amount, which is a single factor, within the formulation range of the present application, but when the factors are simultaneously changed with the formulation of the present application as a whole, there is a preferable formulation, that is: 49.97 percent of MFI20 polypropylene powder, 27.99 percent of permanent bright red pigment, 18.19 percent of BASF PE2 polyethylene wax, 2.80 percent of zinc stearate, 0.98 percent of electrostatic agent and 0.07 percent of silicone powder. When the amount of a component in the formulation, such as polypropylene powder, is changed, for example by 1 percent, the dispersion is greater than 1 percent reduction, but both are less dispersible than the preferred formulations described above as obtained in the present application.
The preparation method of the polypropylene raw material mixture with the fully dispersed red pigment comprises the following steps:
(1) sequentially adding the raw materials into a mixer, starting the mixer, and keeping the mixer rotating at a low speed to mix the materials;
(2) then increasing the rotating speed of the mixer to the standard working rotating speed for rotating, and fully mixing the materials;
(3) and reducing the mixer to a low-speed rotation state again to cure the materials, and completely discharging the materials to obtain the polypropylene raw mixed material with fully dispersed red pigment.
Preferably, the rotation speed of the low-speed rotation in the step (1) is 150-200 rpm, and the operation time is 5-7 minutes.
Preferably, the standard rotating speed in the step (2) is 1500-1800 rpm, and the rotating time is 15-18 minutes.
The polypropylene raw material mixture is mixed in sections on the basis of the formula, and the inventor finds that all components of the raw material mixture are mixed at a low speed state, so that the generation of heat in the mixing process and the temperature rise caused by the heat are inhibited, partial components such as polyethylene wax can be ensured to keep the original form and can not be melted as much as possible, the full mixing opportunity of all the components is provided, and then the raw material mixture is rotated at a high speed to promote the full and uniform dispersion of the raw material mixture.
The invention has the following beneficial effects:
the polypropylene raw material mixture is prepared by a specific formula and process, the permanent bright red is fully dispersed, no raw powder is generated basically, the high-speed material mixing time and the curing time are prolonged, the service cycle of a spinning assembly is prolonged, the obtained polypropylene fiber has good color, no color difference occurs basically, and the waste silk amount is greatly reduced.
Detailed Description
The starting materials used in the present invention are commercially available or commonly used in the art, unless otherwise specified, and the methods in the following examples are conventional in the art, unless otherwise specified.
Example 1
A polypropylene raw material mixture with fully dispersed red pigment comprises the following components in percentage by mass: 49.97 percent of MFI20 polypropylene powder, 27.99 percent of permanent brilliant red pigment, 18.19 percent of BASF PE2 polyethylene wax, 2.80 percent of zinc stearate, 0.98 percent of electrostatic agent and 0.07 percent of silicone powder.
The preparation method of the polypropylene raw material mixture with the fully dispersed red pigment comprises the following steps:
(1) sequentially adding the raw materials into a mixer, starting the mixer, keeping the mixer rotating at a low speed for mixing materials, wherein the rotating speed is 200 revolutions per minute, and the running time is 5 minutes;
(2) then increasing the rotating speed of the mixer to 1500 rpm and rotating for 15 minutes to fully mix the materials;
(3) and reducing the mixer to a low-speed rotation state of 200 rpm, rotating for 7-8 seconds to cure the materials, and completely discharging the materials to obtain the polypropylene raw mixed material with fully dispersed red pigment.
The polypropylene raw material mixture can be agglomerated by being held by hands, and then is slightly rubbed by hands to form powder.
Example 2
A polypropylene base mix having a fully dispersed red pigment was prepared as in example 1, except that: the paint consists of the following components in percentage by mass: 48 percent of MFI20 polypropylene powder, 30 percent of permanent brilliant red pigment, 18 percent of BASF PE2 polyethylene wax, 0.95 percent of electrostatic agent, 0.05 percent of silicone powder and 3 percent of zinc stearate.
Example 3
A polypropylene base mix having a fully dispersed red pigment was prepared as in example 1, except that: the paint consists of the following components in percentage by mass: 49.5 percent of MFI20 polypropylene powder, 28.4 percent of permanent brilliant red pigment, 18.5 percent of BASF PE2 polyethylene wax, 1 percent of electrostatic agent, 0.1 percent of silicone powder and 2.5 percent of zinc stearate.
Example 4
A polypropylene base mix having a fully dispersed red pigment was prepared as in example 1, except that: the paint consists of the following components in percentage by mass: 50.5 percent of MFI20 polypropylene powder, 27 percent of permanent brilliant red pigment, 19 percent of BASF PE2 polyethylene wax, 0.95 percent of electrostatic agent, 0.05 percent of silicone powder and 2.5 percent of zinc stearate.
Example 5
A polypropylene base mix having a fully dispersed red pigment was prepared as in example 1, except that: the paint consists of the following components in percentage by mass: 50.2 percent of MFI20 polypropylene powder, 27.5 percent of permanent brilliant red pigment, 18.7 percent of BASF PE2 polyethylene wax, 1 percent of electrostatic agent, 0.1 percent of silicone powder and 2.5 percent of zinc stearate.
Comparative example 1
The preparation of this polypropylene blend stock was the same as in example 1, except that: the polypropylene raw material mixture consists of the following components in percentage by mass.
45% of MFI20 polypropylene powder, 33% of permanent brilliant red pigment, 18% of BASF PE2 polyethylene wax, 2.50% of zinc stearate, 0.95% of electrostatic agent and 0.55% of silicone powder.
Comparative example 2
The polypropylene raw material mixture consists of 39.32 mass percent of polypropylene granules, 37.99 mass percent of Yongguyanhong, 19.94 mass percent of emulsified wax, 1.33 mass percent of electrostatic agent, 1.33 mass percent of calcium stearate and 0.09 mass percent of silicone powder, wherein the melt flow index MFI of the polypropylene granules is 30, the used emulsified wax is PE-1 of North China chemical New science and technology Limited company of the emulsified mountain, and the softening point is 105 ℃.
The preparation method comprises the following steps: mixing the raw materials, directly mixing for 7-8 min at the rotating speed of 1500 rpm in a mixer, and curing and discharging the materials.
Comparative example 3
The formulation of this polypropylene stock was the same as in example 1, except that the preparation was the one of comparative example 2.
The dispersion performance parameters of the polypropylene blends described above are compared (average results after 10 tests) and are shown in table 1.
The spin pack life cycle in the table is the percentage of the actual life cycle relative to the theoretical life cycle (factory parameters).
TABLE 1 comparison of Dispersion Performance parameters of Polypropylene raw blends
Claims (5)
1. A preparation method of polypropylene raw material mixture with fully dispersed red pigment is characterized by comprising the following steps:
(1) sequentially adding the raw materials into a mixer, starting the mixer, and keeping the mixer rotating at a low speed to mix the materials;
(2) then increasing the rotating speed of the mixer to the standard working rotating speed for rotating, and fully mixing the materials;
(3) reducing the mixer to a low-speed rotation state again to cure the materials, and completely discharging the materials to obtain the polypropylene raw mixed material with the red pigment fully dispersed;
the weight percentage of each component is as follows: the composite material comprises, by mass, not less than 48% of polypropylene powder, 27-30% of red pigment, not less than 17% of polyethylene wax, 0.95-1% of electrostatic agent, 0.05-0.1% of silicone powder and 2.5-3% of flow aid, wherein the sum of the mass percentages of the components is 100%, and the softening point of the polyethylene wax is not less than 120 ℃;
in the step (1), the rotating speed of the low-speed rotation is 150-200 rpm, and the running time is 5-7 minutes;
in the step (2), the standard working rotating speed is 1500-1800 rpm, and the time is 15-18 minutes.
2. The method of preparing a polypropylene blend stock with fully dispersed red pigment according to claim 1, wherein the red pigment is permanent brilliant red.
3. The method of claim 1, wherein the polyethylene wax is BASF PE 2.
4. The method of claim 1, wherein the flow aid is zinc stearate.
5. A method for preparing a polypropylene raw material mixture with fully dispersed red pigment according to any one of the claims 1 to 4, characterized by comprising the following components in percentage by mass: 49.97 percent of MFI20 polypropylene powder, 27.99 percent of permanent brilliant red pigment, 18.19 percent of BASF PE2 polyethylene wax, 2.80 percent of zinc stearate, 0.98 percent of electrostatic agent and 0.07 percent of silicone powder.
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| CN201910751718.7A CN110511483B (en) | 2019-08-15 | 2019-08-15 | Polypropylene raw material mixture with fully dispersed red pigment and preparation method thereof |
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| CN201910751718.7A CN110511483B (en) | 2019-08-15 | 2019-08-15 | Polypropylene raw material mixture with fully dispersed red pigment and preparation method thereof |
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| CN110511483B true CN110511483B (en) | 2022-02-11 |
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| US4810733A (en) * | 1987-10-19 | 1989-03-07 | Toyo Ink Mfg Co., Ltd | Color concentrates |
| JPH02105839A (en) * | 1988-10-15 | 1990-04-18 | Sumitomo Chem Co Ltd | Pigment masterbatch for filled polypropylene composition |
| JPH09165474A (en) * | 1995-12-18 | 1997-06-24 | Toyo Ink Mfg Co Ltd | Granular colorant composition for paving material |
| CN102336962A (en) * | 2011-07-23 | 2012-02-01 | 佛山市衡龙科技有限公司 | PP (Polypropylene) spun-bonded non-woven fabric red master batch and preparation process thereof |
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| CN106758318A (en) * | 2016-12-10 | 2017-05-31 | 李晓光 | Polypropylene Fibre Dyeing anti-aging color masterbatch grain and its processing method |
| CN107938008A (en) * | 2017-12-15 | 2018-04-20 | 浙江四通化纤股份有限公司 | Polypropylene spinning Masterbatch |
| CN109877991A (en) * | 2019-03-06 | 2019-06-14 | 浙江金淳高分子材料有限公司 | A kind of production technology and its process equipment of non-woven fabrics packaging material Masterbatch |
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2019
- 2019-08-15 CN CN201910751718.7A patent/CN110511483B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4810733A (en) * | 1987-10-19 | 1989-03-07 | Toyo Ink Mfg Co., Ltd | Color concentrates |
| JPH02105839A (en) * | 1988-10-15 | 1990-04-18 | Sumitomo Chem Co Ltd | Pigment masterbatch for filled polypropylene composition |
| JPH09165474A (en) * | 1995-12-18 | 1997-06-24 | Toyo Ink Mfg Co Ltd | Granular colorant composition for paving material |
| CN102336962A (en) * | 2011-07-23 | 2012-02-01 | 佛山市衡龙科技有限公司 | PP (Polypropylene) spun-bonded non-woven fabric red master batch and preparation process thereof |
| CN102617916A (en) * | 2012-04-06 | 2012-08-01 | 广州远华色母厂有限公司 | Composition of color high-concentration mono-color master batch for polyolefin |
| CN106758318A (en) * | 2016-12-10 | 2017-05-31 | 李晓光 | Polypropylene Fibre Dyeing anti-aging color masterbatch grain and its processing method |
| CN107938008A (en) * | 2017-12-15 | 2018-04-20 | 浙江四通化纤股份有限公司 | Polypropylene spinning Masterbatch |
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