CN117126491A - Colorant for plastic products and preparation method thereof - Google Patents
Colorant for plastic products and preparation method thereof Download PDFInfo
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- CN117126491A CN117126491A CN202311136872.6A CN202311136872A CN117126491A CN 117126491 A CN117126491 A CN 117126491A CN 202311136872 A CN202311136872 A CN 202311136872A CN 117126491 A CN117126491 A CN 117126491A
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- Prior art keywords
- colorant
- polypropylene
- plastic articles
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- carrageenan
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- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 239000003086 colorant Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- -1 polypropylene Polymers 0.000 claims abstract description 60
- 239000004743 Polypropylene Substances 0.000 claims abstract description 41
- 229920001155 polypropylene Polymers 0.000 claims abstract description 41
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000004698 Polyethylene Substances 0.000 claims abstract description 19
- 229920000573 polyethylene Polymers 0.000 claims abstract description 19
- 239000004014 plasticizer Substances 0.000 claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 239000001038 titanium pigment Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 7
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 24
- 235000010418 carrageenan Nutrition 0.000 claims description 19
- 239000000679 carrageenan Substances 0.000 claims description 19
- 229940113118 carrageenan Drugs 0.000 claims description 19
- 229920001525 carrageenan Polymers 0.000 claims description 19
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- 235000019359 magnesium stearate Nutrition 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000002745 absorbent Effects 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000008035 bio-based plasticizer Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910003472 fullerene Inorganic materials 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 18
- 239000006185 dispersion Substances 0.000 abstract description 12
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000049 pigment Substances 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 8
- 239000011148 porous material Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000006096 absorbing agent Substances 0.000 abstract description 4
- 239000011258 core-shell material Substances 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004408 titanium dioxide Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 14
- 239000004594 Masterbatch (MB) Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- 239000012855 volatile organic compound Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000001023 inorganic pigment Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000012621 metal-organic framework Substances 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000010128 melt processing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 125000002524 organometallic group Chemical group 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007928 solubilization Effects 0.000 description 2
- 238000005063 solubilization Methods 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 239000013177 MIL-101 Substances 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 208000032140 Sleepiness Diseases 0.000 description 1
- 206010041349 Somnolence Diseases 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 125000002843 carboxylic acid group Chemical group 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 235000021404 traditional food Nutrition 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Abstract
The application provides a colorant for plastic products and a preparation method thereof, wherein the colorant comprises the following components: 32-40% of polypropylene, 10-15% of polyethylene wax, 0.5-1.5% of optical absorber, 0.5-1.2% of antioxidant, 15-22% of precipitated barium sulfate, 10-18% of titanium dioxide, 5-10% of organic metal framework and 2-5% of biological base plasticizer; the MOF organic metal frame material is added into the colorant, has a larger pore canal structure and pore diameter, can provide enough space for titanium pigment and barium sulfate and form core shell lamellar pigment particles, so that the dispersion performance of the pigment in plastic products is improved, the dispersion performance of the filler in polypropylene is further improved, and compared with the traditional plasticizer such as dibutyl phthalate, the organic metal frame material has better environment-friendly performance, is easy to obtain in material, has lower cost and can effectively prevent the excessive emission of VOC.
Description
Technical Field
The application relates to the technical field of high polymer materials, in particular to a colorant for plastic products and a preparation method thereof.
Background
With plastic products, the plastic products are widely applied to life and industry. As people have increased demands for quality of life and environmental protection, the color diversification requirements of plastic products have also increased. The coloration of plastic articles is typically accomplished using colorants that play an important role in maintaining the color and appearance of the product. However, the conventional plastic colorants have poor dispersibility, and cannot uniformly disperse pigments in plastic particles. The color of the produced plastic product is uneven, the processes such as extension molding and the like are difficult to realize, and the quality and the value of the product are seriously affected.
In addition, conventional plastic colorants use a large amount of organic pigments which contain volatile organics which volatilize during the coloring process and are further released during product use. These volatile organics are known as VOCs and present a potential risk and hazard to humans and the environment. Prolonged exposure to VOC-containing environments can cause headache, somnolence, nausea, dryness, and other symptoms, and even damage and disease to the liver, lungs, and nervous system. Because of the large amount of plasticizer in conventional plastic colorants, the emitted VOCs are also numerous, and present a significant hazard to humans and the natural environment.
To solve this problem, inorganic pigments have been used instead of conventional organic pigments. The inorganic pigment does not contain VOC and has better durability and stability. However, inorganic pigments themselves are relatively viscous and do not readily disperse uniformly with plastic particles, and therefore it is desirable to use dispersants to aid in their uniform dispersion. In addition, the colorant adopting the inorganic pigment needs to be added with other auxiliary agents such as thickening agents, leveling agents and the like to improve the weather resistance and the coloring effect of the plastic product, and the traditional food packaging plastic at present contains a large amount of plasticizers to meet the requirements of softness and formability. However, the addition of the plasticizer not only affects the mechanical properties and the molding properties of the plastic itself, but also causes a certain degree of pollution to the food. In addition, these plasticizers can penetrate into the food and may have an effect on human health during use.
In view of the above, there is a certain technical difficulty in developing and producing plastic colorants with high transparency, no plasticizer and good stability.
Disclosure of Invention
The application provides a colorant for plastic products, which aims to solve the technical problems that the colorant for plastic products contains a plasticizer and has low transparency and low dispersion degree.
A second object of the present application is to provide a process for preparing a colorant for plastic articles.
In order to achieve the first object, the present application adopts the following technical scheme:
a colorant for plastic products, which comprises the following components in percentage by weight:
by adding MOF organic metal framework material with larger pore canal structure and pore diameter into the colorant, enough space can be provided for titanium pigment and barium sulfate and core shell lamellar pigment particles are formed, so that the dispersion performance of pigment in plastic products is improved, and the dispersion performance of filler in polypropylene is further improved, wherein the organic metal framework is MIL-101 (CR) and is purchased from Henan Wittig chemical industry Co., ltd., BET specific surface 2800-3200m 2 And/g, compared with the traditional plasticizer such as dibutyl phthalate, the plasticizer has better environment-friendly property, easily available materials and lower cost, and can effectively prevent the excessive emission of VOC.
Preferably, the bio-based plasticizer is a mixture of carrageenan and magnesium stearate, the mass ratio of the carrageenan to the magnesium stearate is 3-7:1, more preferably, the mass ratio of the carrageenan to the magnesium stearate is 4:1, and a high molecular cross-linking structure can be formed between the carrageenan and the magnesium stearate through the formation of hydrogen bonds, so that the plasticizer has a plasticizing effect.
Preferably, the carrageenan is any one of kappa-type carrageenan, iota-type carrageenan and lambda-type carrageenan, more preferably, the carrageenan is lambda-type carrageenan, and after being compounded with magnesium stearate, attractive force is generated between the lambda-type carrageenan and stearic acid molecules through formation of hydrogen bonds, so that interaction and compatibility of the lambda-type carrageenan are promoted, a 3,6-AG structural unit in the lambda-type carrageenan can be subjected to condensation reaction with carboxylic acid groups in stearic acid to form a high-molecular crosslinked structure, further the plasticizing effect is achieved, the ductility and flexibility of the material are improved, the service life of the material is prolonged, the glass transition temperature of the plastic material is reduced to a certain extent, the influence of temperature change on the material is reduced, the transparency and the brightness of the plastic material are increased, and the optical performance of the plastic material is improved.
Preferably, the optical absorber is a non-fullerene receptor, a fullerene receptor, BO-4Cl, PC 71 Any one of BM can prevent the color change in the actual application scene by adding the optical absorber, can strengthen the coloring power of the pigment, improve the color quality of the plastic product, strengthen the coloring power of the pigment and improve the color quality of the plastic product.
Preferably, the relative molecular weight of the polyethylene wax is 5000-7000, more preferably, the relative molecular weight of the polyethylene wax is 5000-6000, in this range, the dispersion property of the masterbatch is best, and the prepared masterbatch is higher in transparency when used for plastic products, because the polyethylene wax with higher relative molecular weight has higher crystallinity and melting point, so that the polyethylene wax has better solubilization effect in the preparation process of the masterbatch, thereby improving the transparency of the masterbatch. In contrast, too low a relative molecular mass may result in polyethylene waxes that are easy to disperse, but poor in solubilization, and difficult to increase the clarity of the masterbatch.
Preferably, the polypropylene is a mixture of isotactic polypropylene and syndiotactic polypropylene, on the one hand, the isotactic polypropylene has higher polymerization degree and longer molecular chain, so that the isotactic polypropylene has higher toughness and ductility; the syndiotactic polypropylene has more branched structure in molecular chain, and the molecules are not easy to be orderly arranged during interaction, so that the hardness of the material is increased. The two are compounded to form master batches, so that the plastic product has better strength and certain hardness, and the isotactic polypropylene and the syndiotactic polypropylene have different melting points and crystallinity, so that the melting points and the crystallinity of the plastic material are more average after the compounding, and the high-temperature resistance of the material is improved.
Preferably, the mass ratio of the isotactic polypropylene to the syndiotactic polypropylene is 4-4.5:1, more preferably 4:1, at this time, the isotactic polypropylene is dominant, the polymerization degree can be improved, the crystallization volume can be increased, the stability of the compound is improved, meanwhile, the addition of the syndiotactic polypropylene can improve the hardness of the masterbatch, so that the product is harder and more durable, the apparent optical density of the masterbatch with the compound ratio is similar to that of the common masterbatch, and the dispersion degree of the masterbatch in the plastic product is higher.
In order to achieve the second object, the present application adopts the following technical scheme:
a process for preparing a colorant for plastic articles as claimed in any one of the preceding claims,
s1, weighing all raw materials according to a proportion, and crushing polypropylene and polyethylene wax to 800 meshes;
s2, sequentially adding the crushed polypropylene and polyethylene wax powder, precipitated barium sulfate, titanium pigment, an optical absorbent, an antioxidant, magnesium stearate and a plasticizer into a high-speed mixer, uniformly mixing, and dehumidifying at a constant temperature of 30 ℃ to obtain a mixture;
and S3, delivering the mixture obtained in the step S2 into an extruder for granulation, and obtaining the composite material.
In the preparation method of the colorant for plastic products, in the step S2, the water content of the mixture is 12-15%.
In the preparation method of the colorant for plastic products, in the step S3, the temperature is 230-280 ℃.
Compared with the prior art, the application has the following advantages:
1. according to the colorant for plastic products, the MOF organic metal frame material is added into the colorant, so that the colorant has a larger pore canal structure and pore diameter, enough space can be provided for titanium pigment and barium sulfate, and core shell lamellar pigment particles are formed, so that the dispersion performance of pigment in the plastic products is improved, the dispersion performance of filler in polypropylene is further improved, and compared with the traditional plasticizer such as dibutyl phthalate, the colorant has the advantages of better environment friendliness, easily available materials, lower cost and capability of effectively preventing the excessive discharge of VOC.
2. The preparation method of the colorant for plastic products provided by the application reduces the water content, reduces the water vapor on the surfaces of master batch particles, and prevents the problems of bubbles, cracks, rough surfaces and the like in melt processing, thereby improving the product quality, being simple to operate, low in cost, suitable for large-scale industrial production, and good in economic benefit and broad in market prospect.
Detailed Description
The following describes specific embodiments of the present application with reference to specific examples 1 to 3 and comparative examples 1 to 3:
example 1:
s1, weighing all raw materials according to the proportion of the table 1, and crushing polypropylene and polyethylene wax to 800 meshes, wherein the proportion of isotactic polypropylene to syndiotactic polypropylene is 4:1;
s2, sequentially adding the crushed polypropylene and polyethylene wax powder, precipitated barium sulfate, titanium pigment, an optical absorbent, an antioxidant, magnesium stearate and a plasticizer into a high-speed mixer, uniformly mixing, and dehumidifying at a constant temperature of 30 ℃ until the water content is 12%, thereby obtaining a mixture;
and S3, conveying the mixture obtained in the step S2 into an extruder, and extruding and granulating at the temperature of 230 ℃ to obtain the composite material.
Example 2:
s1, weighing all raw materials according to the proportion of the table 1, and crushing polypropylene and polyethylene wax to 800 meshes, wherein the proportion of isotactic polypropylene to syndiotactic polypropylene is 4:1;
s2, sequentially adding the crushed polypropylene and polyethylene wax powder, precipitated barium sulfate, titanium pigment, an optical absorbent, an antioxidant, magnesium stearate and a plasticizer into a high-speed mixer, uniformly mixing, and dehumidifying at a constant temperature of 30 ℃ until the water content is 14%, thereby obtaining a mixture;
and S3, conveying the mixture obtained in the step S2 into an extruder, and extruding and granulating at the temperature of 250 ℃ to obtain the composite material.
Example 3:
s1, weighing all raw materials according to the proportion of the table 1, and crushing polypropylene and polyethylene wax to 800 meshes, wherein the proportion of isotactic polypropylene to syndiotactic polypropylene is 4:1;
s2, sequentially adding the crushed polypropylene and polyethylene wax powder, precipitated barium sulfate, titanium pigment, an optical absorbent, an antioxidant, magnesium stearate and a plasticizer into a high-speed mixer, uniformly mixing, and dehumidifying at a constant temperature of 30 ℃ until the water content is 15%, so as to obtain a mixture;
and S3, conveying the mixture obtained in the step S2 into an extruder, and extruding and granulating at the temperature of 280 ℃ to obtain the composite material.
Comparative example 1:
the ratio of isotactic polypropylene to syndiotactic polypropylene was adjusted to 1:1, and the remaining components and preparation method were the same as in example 1.
Comparative example 2:
the replacement of the organometallic framework with a polyvinyl amide and the remaining components and preparation method are identical to those of example 1.
Comparative example 3:
the biobased plasticizer was replaced with dibutyl phthalate and the remaining components and preparation method were identical to example 1.
Table 1: examples 1 to 3 and comparative examples 1 to 3 in mass percent (%)
| Component (A) | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Polypropylene | 33.2 | 35.8 | 40 | 33.2 | 33.2 | 33.2 |
| Polyethylene wax | 15 | 12 | 15 | 15 | 15 | 15 |
| Optical absorber | 1.3 | 1.2 | 0.5 | 1.3 | 1.3 | 1.3 |
| Antioxidant agent | 1.5 | 1 | 0.5 | 1.5 | 1.5 | 1.5 |
| Precipitated barium sulfate | 22 | 22 | 19 | 22 | 22 | 22 |
| Titanium white powder | 18 | 15 | 10 | 18 | 18 | 18 |
| Organometallic frame | 5 | 10 | 10 | 5 | - | - |
| Polyethylene amide | - | - | - | - | 5 | 5 |
| Bio-based plasticizer | 4 | 3 | 5 | 4 | 4 | - |
| Dibutyl phthalate | - | - | - | - | - | 4 |
The colorants obtained in examples 1 to 3 and comparative examples 1 to 3 were each blow-molded into films for packaging bags, and the film properties were examined, wherein the test structures are shown in Table 2.
Table 2: test data
As can be seen from Table 2, the colorant for plastic products provided by the application has a large pore structure and pore diameter by adding the MOF organic metal framework material into the colorant, and can provide enough space for titanium pigment and barium sulfate and form core shell lamellar pigment particles, so that the dispersion performance of pigment in plastic products is improved, the dispersion performance of filler in polypropylene is further improved, compared with the traditional plasticizer such as dibutyl phthalate and the like, the colorant has better environment-friendly performance, easily obtained materials and lower cost, can effectively prevent excessive discharge of VOC, and the preparation method reduces the moisture content of master batch particle surfaces, prevents the problems of bubble, crack, surface roughness and the like in melt processing, thereby improving the product quality, being simple to operate, having lower cost, being suitable for large-scale industrial production and having good economic benefit and broad market prospect.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (10)
1. A colorant for plastic articles, comprising the following components in weight percent:
2. a colorant for plastic articles according to claim 1, wherein: the bio-based plasticizer is a mixture of carrageenan and magnesium stearate, and the mass ratio of the carrageenan to the magnesium stearate is 3-7:1.
3. A colorant for plastic articles according to claim 2, wherein: the carrageenan is any one of kappa-type carrageenan, iota-type carrageenan and lambda-type carrageenan.
4. A colorant for plastic articles according to claim 1, wherein: the optical absorbent is non-fullerene receptor, BO-4Cl or PC 71 BM, any one of the following.
5. A colorant for plastic articles according to claim 1, wherein: the relative molecular weight of the polyethylene wax is 5000-7000.
6. A colorant for plastic articles according to claim 1, wherein: the polypropylene is a mixture of isotactic polypropylene and syndiotactic polypropylene.
7. The colorant for plastic articles according to claim 6, wherein: the mass ratio of the isotactic polypropylene to the syndiotactic polypropylene is 4-4.5:1.
8. A process for the preparation of a colorant for plastic articles as claimed in any one of claims 1 to 7, characterized in that:
s1, weighing all raw materials according to a proportion, and crushing polypropylene and polyethylene wax to 800 meshes;
s2, sequentially adding the crushed polypropylene and polyethylene wax powder, precipitated barium sulfate, titanium pigment, an optical absorbent, an antioxidant, magnesium stearate and a plasticizer into a high-speed mixer, uniformly mixing, and dehumidifying at a constant temperature of 30 ℃ to obtain a mixture;
and S3, delivering the mixture obtained in the step S2 into an extruder for granulation, and obtaining the composite material.
9. The method for producing a colorant for plastic articles according to claim 8, wherein: in the step S2, the water content of the mixture is 12-15%.
10. The method for producing a colorant for plastic articles according to claim 8, wherein: in the step S3, the temperature is 230-280 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311136872.6A CN117126491A (en) | 2023-09-05 | 2023-09-05 | Colorant for plastic products and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311136872.6A CN117126491A (en) | 2023-09-05 | 2023-09-05 | Colorant for plastic products and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117126491A true CN117126491A (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311136872.6A Pending CN117126491A (en) | 2023-09-05 | 2023-09-05 | Colorant for plastic products and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117126491A (en) |
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- 2023-09-05 CN CN202311136872.6A patent/CN117126491A/en active Pending
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