CN110894364A - Super-dispersed carrier-free color master batch and preparation method and application thereof - Google Patents
Super-dispersed carrier-free color master batch and preparation method and application thereof Download PDFInfo
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- CN110894364A CN110894364A CN201911117742.1A CN201911117742A CN110894364A CN 110894364 A CN110894364 A CN 110894364A CN 201911117742 A CN201911117742 A CN 201911117742A CN 110894364 A CN110894364 A CN 110894364A
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- 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
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/223—Packed additives
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- 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
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- 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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- 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
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to the technical field of color masterbatch, in particular to a super-dispersed carrier-free color masterbatch and a preparation method and application thereof. The super-dispersed carrier-free color master batch provided by the invention comprises 50-70 parts of pigment and 30-50 parts of processing aid in parts by mass; the processing aid is one or more of polypropylene wax, polyethylene wax and Fischer-Tropsch wax. The invention can disperse the pigment by selecting proper processing aids and controlling the content of each component, and the obtained carrier-free color master batch has good dispersibility. In addition, the color master batch obtained by matching the specific pigment with the specific processing aid not only has good dispersibility, but also has stronger coloring capability and good surface effect when being used for coloring plastic products.
Description
Technical Field
The invention relates to the technical field of color masterbatch, in particular to a super-dispersed carrier-free color masterbatch and a preparation method and application thereof.
Background
The carrier-free color master batch is popular with customers because of its universality and can be used for coloring plastics such as PE, PP, PC, ABS and the like.
Carrier-free color concentrates are typically processed from pigments and various adjuvants. Wherein, the pigment is a colored fine particle powdery substance, is generally insoluble in water and can be dispersed in various media such as oil, resin, organic solvent and the like; it has hiding power, tinting strength, is relatively stable to light, and is commonly used in formulating paints, inks, and pigmented plastics and rubbers. Pigments are generally insoluble in the medium used and are present in most cases in the form of aggregates. To obtain good tinting strength, hiding power, chroma, and the like, the aggregates of the pigment must be opened and held stable. If the pigment is not well dispersed, many defects may occur, such as: low surface gloss, color shift, flooding, light transmission, etc.
With the technological progress, the particle size of the pigment is smaller and the specific surface area is larger and larger, the pigment is difficult to disperse, and if the color masterbatch is prepared according to the prior formula, the aggregate of the pigment cannot be completely opened, so that various problems can be caused. Therefore, the formula of the carrier-free color master batch is urgently needed to be adjusted so as to avoid various defects of products caused by poor pigment dispersibility.
Disclosure of Invention
The invention aims to provide a super-dispersed carrier-free color master batch, and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a super-dispersed carrier-free color master batch which comprises 50-70 parts of pigment and 30-50 parts of processing aid in parts by mass; the processing aid is one or more of polypropylene wax, polyethylene wax and Fischer-Tropsch wax.
Preferably, the viscosity of the polypropylene wax is 2500-3000 mPa & s, and the softening point is 150 +/-3 ℃; the viscosity of the polyethylene wax is 1100-1300 mPa & s, and the softening point is 105 +/-3 ℃; the Fischer-Tropsch wax has a viscosity of 1500-1800 mPa & s and a softening point of 100 +/-3 ℃.
Preferably, the pigment comprises one or more of high pigment carbon black, titanium dioxide, organic red pigment, organic yellow pigment and phthalocyanine blue pigment.
Preferably, the particle size of the high pigment carbon black is 6-15 nm, and the oil absorption is (40-45)/100 g.
Preferably, the particle size of the titanium dioxide is 20-26 nm, and the oil absorption is (22-25)/100 g.
Preferably, the organic red pigment has a particle size of 3 to 10nm and an oil absorption of (55 to 60)/100 g.
Preferably, the particle size of the organic yellow pigment is 3-10 nm, and the oil absorption is (40-45)/100 g.
Preferably, the phthalocyanine blue pigment has a particle size of 3 to 10nm and an oil absorption of (44 to 48)/100 g.
The invention provides a preparation method of the super-dispersed carrier-free color master batch, which comprises the following steps: and mixing the pigment and the processing aid, and banburying, extruding and granulating the obtained mixture in sequence to obtain the super-dispersed carrier-free color master batch.
The invention also provides the application of the super-dispersed carrier-free color master batch prepared by the preparation method in the scheme or the super-dispersed carrier-free color master batch prepared by the preparation method in plastic coloring.
The invention provides a super-dispersed carrier-free color master batch which comprises 50-70 parts of pigment and 30-50 parts of processing aid in parts by mass; the processing aid is one or more of polypropylene wax, polyethylene wax and Fischer-Tropsch wax. The invention can disperse the pigment by selecting proper processing aids and controlling the content of each component, and the obtained carrier-free color master batch has good dispersibility.
In addition, the color master batch obtained by matching the specific pigment with the specific processing aid not only has good dispersibility, but also has stronger coloring capability and good surface effect when being used for coloring plastic products.
Detailed Description
The invention provides a super-dispersed carrier-free color master batch which comprises 50-70 parts of pigment and 30-50 parts of processing aid in parts by mass; the processing aid is one or more of polypropylene wax, polyethylene wax and Fischer-Tropsch wax.
The super-dispersed carrier-free color master batch comprises 50-70 parts by mass of pigment. In the present invention, the pigment preferably includes one or more of high pigment carbon black, titanium dioxide, organic red pigment, organic yellow pigment and phthalocyanine blue pigment. When a plurality of pigments are included, the distribution relation of the pigments is not particularly required, and the skilled person can carry out color matching according to actual needs. In the invention, the particle size of the high pigment carbon black is preferably 6-15 nm, more preferably 9nm, and the oil absorption is preferably (40-45)/100 g; the particle size of the titanium dioxide is preferably 20-26 nm, and the oil absorption is preferably (22-25)/100 g; the particle size of the organic red pigment is preferably 3-10 nm, more preferably 3nm, and the oil absorption is preferably (55-60)/100 g; in the invention, the particle size of the organic yellow pigment is preferably 3-10 nm, more preferably 4nm, and the oil absorption is preferably (40-45)/100 g; the particle size of the phthalocyanine blue pigment is preferably 3-10 nm, and the oil absorption is preferably (44-48)/100 g. The present invention does not require any particular kind of the organic red pigment and the organic yellow pigment, and both of the organic red pigment and the organic yellow pigment are well known in the art. In an embodiment of the present invention, the organic red pigment is specifically permanent red, and the organic yellow pigment is specifically permanent yellow. The pigments used in the present invention are all difficult to disperse pigments well known in the art.
Based on the mass parts of the pigment, the super-dispersed carrier-free color master batch disclosed by the invention comprises 30-50 parts of processing aid. In the present invention, the processing aid is one or more of polypropylene wax, polyethylene wax and fischer-tropsch wax, preferably polyethylene wax or fischer-tropsch wax, more preferably fischer-tropsch wax. In the invention, the viscosity of the polypropylene wax is preferably 2500-3000 mPa & s, and the softening point is preferably 150 +/-3 ℃; the viscosity of the polyethylene wax is preferably 1100-1300 mPa & s, and the softening point is preferably 105 +/-3 ℃; the viscosity of the Fischer-Tropsch wax is preferably 1500-1800 mPa & s, and the softening point is preferably 100 +/-3 ℃.
According to the invention, the pigment can be fully dispersed by selecting a proper processing aid and controlling the content of each component, so that the obtained carrier-free color master batch has good dispersibility.
In addition, the invention enables the color master batch to have good dispersibility and good coloring capability and surface effect by matching the specific pigment with the specific processing aid. For example: when the high-pigment carbon black, the organic yellow or the organic red are matched with Fischer-Tropsch wax for use and the high-pigment carbon black and the permanent yellow are matched with polyethylene wax for use, the obtained color master batch has good dispersibility and good coloring capability, and has good surface effect when being applied to coloring plastic products.
In the invention, the particle size of the super-dispersion carrier-free color master batch is preferably 2.5-3.5 mm, and more preferably 3.0 mm.
The invention provides a preparation method of the super-dispersed carrier-free color master batch, which comprises the following steps: and mixing the pigment and the processing aid, and banburying, extruding and granulating the obtained mixture in sequence to obtain the super-dispersed carrier-free color master batch.
According to the invention, the pigment and the processing aid are mixed to obtain a mixture. In the invention, the mixing is preferably carried out in a mixer, the mixing time is preferably 3-8 min, and the mixing speed is preferably 1000-1400 r/min.
After the mixing is finished, the obtained mixture is subjected to banburying and extrusion granulation in sequence to obtain the super-dispersed carrier-free color master batch. In the invention, the internal mixing is preferably carried out in an internal mixer, when the internal mixing is carried out, the first-stage temperature of the internal mixer is preferably 130-140 ℃, the second-stage temperature of the internal mixer is preferably 135-145 ℃, and the rotating speed of the internal mixer is preferably 220 r/min. In the invention, the extrusion granulation is preferably carried out in a single-screw extruder, the screw rotation speed is preferably 140r/min, the first-stage temperature is preferably 140-150 ℃, the second-stage temperature is preferably 150-155 ℃, the third-stage temperature is preferably 155-160 ℃, the die head temperature is preferably 160-170 ℃, and the extrusion granulation mode is preferably hot-cutting granulation. After extrusion granulation is completed, the present invention preferably further comprises cooling the hot cut pellets to obtain the ultra-dispersed unsupported color masterbatch. In the present invention, the cooling is preferably performed by a blower, and the cooling is preferably performed by three-stage air cooling.
The invention provides an application of the super-dispersed carrier-free color master batch prepared by the scheme or the preparation method in plastic coloring. The invention has no special requirements for the mode of application, and can be applied by the mode of application well known in the field.
The ultra-disperse unsupported color concentrates provided by the present invention and the methods of preparation and use thereof are described in detail below with reference to the examples, but they should not be construed as limiting the scope of the invention.
Example 1
Weighing and proportioning according to the following formula: 70 parts of high pigment carbon black and 30 parts of Fischer-Tropsch wax.
Mixing the components in a mixer at a speed of 1400r/min for 5min, then banburying by a continuous internal mixer, extruding and granulating by a single-screw extruder, wherein the temperature of the internal mixer is set as follows: the first section is 130 ℃, the second section is 140 ℃, and the rotating speed of a main engine is 220 r/min; the extruder temperature was set at: the temperature of the first section is 140 ℃, the temperature of the second section is 150 ℃, the temperature of the third section is 160 ℃, the temperature of a die head is 170 ℃, the rotating speed of a main engine is 140r/min, and the ultra-dispersed carrier-free color master batch is obtained after the third section is air-cooled.
Examples 2 to 9
The difference from example 1 is the type of pigment and the type of processing aid, the specific formulation is shown in Table 1, and the others are the same as example 1.
Application example
The color concentrates of examples 1-9 were mixed with PP uniformly (the amount of color concentrate added was 0.5% by weight of PP), and then injection molded into sheet-like test pieces 80mm long, 60mm wide and 1.5mm thick, L value was measured, and surface effect and gloss were observed, and the specific results are shown in Table 1.
TABLE 1 color concentrate compositions and Properties of examples 1-9
From the results in table 1, it can be seen that all three waxes produced colorless dots, indicating that the color concentrates of the present invention have good dispersibility. Among them, the best L-value coloring power in black (high-color carbon black) is Fischer-Tropsch wax (the lower the L value is, the stronger the coloring power is), the surface effect of Fischer-Tropsch wax is close to that of polyethylene wax, polypropylene wax is the worst, and the surface of an injection molded sheet has flow marks; in the red color, the best tinctorial strength of the Fischer-Tropsch wax is, the injection molded sheet of polyethylene wax is transparent, and the injection molded sheet of polypropylene wax has flow marks and is transparent; in yellow, the Fischer-Tropsch wax has the best tinting strength, and the surfaces of the polyethylene wax and polypropylene wax injection molding sheets have flow marks; the gloss difference between the polyethylene wax, the polypropylene wax and the Fischer-Tropsch wax in the PP injection molded sheet is not large. The conclusion thus drawn is that: fischer-tropsch waxes are most suitable for processing ultra-disperse, carrier-free color concentrates.
Examples 10 to 11 and comparative example
The difference from the example 4 lies in the proportion of each component of the super-dispersed carrier-free color master batch, and the specific composition is shown in the table 2.
The color concentrates prepared in examples 10 to 11 and comparative example were mixed with PP uniformly (the amount of the color concentrate was 0.5% by mass of PP), and then injection-molded into sheet-like test pieces 80mm long, 60mm wide and 1.5mm thick, and L value was measured to observe surface effect and gloss, and the specific results are shown in Table 2.
Table 2 compositions and properties of color concentrates for examples 4, 10, 11 and comparative examples
As can be seen from Table 2, the carrier-free color concentrates of examples 4, 10, and 11 and the PP molding sheets all have stronger tinting strength, high gloss, and good surface effect, wherein the formulation of example 4 is the best because the tinting strength is the highest, the surface effect is also good, and the gloss is also not low. And after the color master batch obtained by the comparative example and PP are subjected to injection molding, the obtained injection molding sheet has colored dots on the surface, which shows that the dispersibility is poor, in addition, the tinting strength is low, and the surface effect is also poor. The content of the pigment and the processing aid in the carrier-free color master batch is controlled, so that the obtained color master batch has good dispersibility, strong tinting strength and good surface effect.
The embodiments show that the invention provides the ultra-dispersed unsupported color master batch, and the preparation method and the application thereof.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The super-dispersed carrier-free color master batch is characterized by comprising 50-70 parts of pigment and 30-50 parts of processing aid in parts by mass; the processing aid is one or more of polypropylene wax, polyethylene wax and Fischer-Tropsch wax.
2. The ultra-disperse non-carrier color masterbatch according to claim 1, wherein the polypropylene wax has a viscosity of 2500 to 3000 mPa-s and a softening point of 150 ± 3 ℃; the viscosity of the polyethylene wax is 1100-1300 mPa & s, and the softening point is 105 +/-3 ℃; the Fischer-Tropsch wax has a viscosity of 1500-1800 mPa & s and a softening point of 100 +/-3 ℃.
3. The ultra-disperse unsupported color concentrate of claim 1, wherein the pigment comprises one or more of high pigment carbon black, titanium dioxide, organic red pigments, organic yellow pigments, and phthalocyanine blue pigments.
4. The ultra-dispersed unsupported color masterbatch according to claim 3, wherein the high pigment carbon black has a particle size of 6 to 15nm and an oil absorption of (40 to 45)/100 g.
5. The ultra-dispersed unsupported color masterbatch according to claim 3, wherein the titanium dioxide has a particle size of 20 to 26nm and an oil absorption of (22 to 25)/100 g.
6. The super-dispersed unsupported color masterbatch according to claim 3, wherein the organic red pigment has a particle size of 3 to 10nm and an oil absorption of (55 to 60)/100 g.
7. The super-dispersed unsupported color masterbatch according to claim 3, wherein the organic yellow pigment has a particle diameter of 3 to 10nm and an oil absorption of (40 to 45)/100 g.
8. The ultra-dispersed unsupported color masterbatch of claim 3, wherein the phthalocyanine blue pigment has a particle size of 3 to 10nm and an oil absorption of (44 to 48)/100 g.
9. A process for the preparation of a super-dispersed unsupported color concentrate according to any one of claims 1 to 8, characterized in that it comprises the following steps: and mixing the pigment and the processing aid, and banburying, extruding and granulating the obtained mixture in sequence to obtain the super-dispersed carrier-free color master batch.
10. Use of the ultra-dispersed unsupported color concentrate according to any of claims 1 to 8 or prepared by the process according to claim 9 for coloring plastics.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112812359A (en) * | 2021-01-07 | 2021-05-18 | 上海英耀塑胶材料有限公司 | Carrier-free high-gloss oil black master batch and preparation method and application thereof |
| CN114149635A (en) * | 2021-11-30 | 2022-03-08 | 上海金发科技发展有限公司 | Spray-free infrared-transmitting polypropylene composition and preparation method and application thereof |
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Application publication date: 20200320 |