CN114685921B - Preparation method of quantum dot resin material - Google Patents
Preparation method of quantum dot resin material Download PDFInfo
- Publication number
- CN114685921B CN114685921B CN202011641779.7A CN202011641779A CN114685921B CN 114685921 B CN114685921 B CN 114685921B CN 202011641779 A CN202011641779 A CN 202011641779A CN 114685921 B CN114685921 B CN 114685921B
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- resin material
- speed
- solution
- granulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a method for preparing a quantum dot resin material, which specifically comprises the following steps: step one: preparing quantum dot powder, namely preparing carbon quanta with good stability and no toxicity by utilizing a hydrothermal reaction; step two: compounding ingredients, namely fully mixing quantum dot powder, a dispersing agent and a resin base material; step three: extruding and granulating, namely extruding and granulating the fully mixed composite material at high temperature through a double screw to form the quantum dot resin material. The quantum dot resin obtained by the method has excellent fluorescence, mechanical property and flame retardant property. The method is simple and easy to implement, is suitable for various resins, and only needs to uniformly disperse a certain proportion of quantum dot powder in a resin base material.
Description
Technical Field
The invention relates to a preparation method of a quantum dot resin material with good fluorescence, mechanical property and flame retardant property, which can be applied to the display field, injection molding of special products, film materials and the like, and has the advantages of simplicity, easiness and practicability and innovation.
Background
Currently, polyolefin or polyester resin materials are used in many ways, but most of them are used in lower-end injection molding or film material products. How to maximize the added value and optimize the mechanical properties of the alloy has become a research hot spot. The carbon quantum dots are fluorescent nano particles with the size of 2-4nm in the true sense, the particle size is adjustable, the raw materials are mild, the synthesis is simple, and the product is nontoxic. The nano-size effect of the quantum dot can be very good to reinforce the resin substrate, so that the tensile strength base and bending strength of the quantum dot are greatly improved, and on the other hand, the color gamut level of the display device can be effectively improved when the quantum dot device is used as a backlight source. Meanwhile, as the functional groups on the surface of the carbon quantum dot are rich, surrounding oxygen can be rapidly consumed under high-temperature open flame to form carbon dioxide, water and coke to carry out flame-retardant protection on the substrate.
Mixing the quantum dots with the polymer resin can greatly provide the fluorescence, mechanical and flame retardant properties of the resin material, but the quenching deactivation of the quantum dots caused by the high Wen Canza performance of the quantum dots and the polymer resin is poor in that the fluorescent resin activity can only be traced by preserving a small amount of optical properties as described in CN 109790234. In addition, the nano-size of the quantum dot is extremely easy to generate agglomeration phenomenon, so that the product performance is poor, fluorescence disappears and the like. The fluorescent compound and the production method thereof in CN 103992344 have extremely high production requirements, complex and toxic raw material matching and are not easy to popularize in a large area. The invention can make up the defects and develop the nontoxic quantum dot resin material which has simple process and can be prepared in large quantity.
Disclosure of Invention
The invention aims to provide a preparation method of a quantum dot resin material for overcoming the defects in the prior art. The defect that other quantum dots are easy to quench after being mixed at high temperature by a screw rod is overcome, meanwhile, the material is endowed with more excellent mechanical property and better flame retardant property, the added value of the material is greatly improved, and the material can be applied to optical devices, injection molding of special products, film materials and the like.
The technical scheme of the invention is as follows: the preparation method of the quantum dot resin material comprises the following specific steps:
step one: preparing quantum dot powder; dissolving citric acid and urea serving as raw materials in deionized water to prepare a solution, transferring the solution into a hydrothermal kettle, placing the hydrothermal kettle into a high-temperature oven for reaction, taking out the hydrothermal reaction kettle after the reaction is finished, opening the hydrothermal reaction kettle after cooling, taking out a quantum dot solution, and drying to obtain quantum dot powder;
step two: compounding ingredients; the dispersing agent and the quantum dot powder are mixed according to the mass ratio of 1: mixing the components in the proportion of (10-50) to form a component A; the mass ratio of the component A to the resin material is 1: mixing and stirring the components in a high-speed mixer according to the proportion of (10-100) to form a composite ingredient;
step three: extruding and granulating; and extruding and granulating the composite ingredients through double screw rods at high temperature to form the quantum dot resin material.
Preferably, in the first step, the molar ratio of citric acid to urea is 1: (0.5-1) preparing the solution with the mass concentration of 1-2%; the temperature of the high-temperature oven is 180-200 ℃, and the reaction time is 6-10 hours.
Preferably, the rotating speed of the high-speed mixer in the second step is 1000-1400r/min, and the mixing and stirring time is 2-4 minutes.
The parameters of the twin-screw extruder in the preferred step three are: the melt temperature is set to be 170-280 ℃ (the temperature is set according to the melt temperature of the selected resin base material), the screw rotating speed is set to be 20-28r/min, and the feeding speed is set to be 10-15r/min. And (3) cooling the bracing piece in a water cooling mode after extrusion, and keeping the granulating speed set parallel to the rotating speed of the screw rod to keep continuous.
Preferably, the dispersing agent is one or more of stearic acid amide, erucic acid amide, ethylene bisstearic acid amide or paraffin wax.
Preferably, the resin-based material is a polyester resin or a polyolefin resin. More preferably, the resin-based material is one or more of polyethylene, polypropylene, polymethyl methacrylate, polystyrene, polycarbonate or polyethylene terephthalate.
The emission wavelength of the obtained quantum dot resin material is between 460 and 490 nm.
The beneficial effects are that:
1. the invention changes the types of quantum dots, creatively uses carbon quanta, has microscopic dimensions of 2-4nm, can stably maintain the self-fluorescence characteristic in a high-temperature environment, and greatly improves the yield of products in the processing process
2. According to the invention, the carbon quantum dots are fully dispersed in the resin material by using the dispersing agent, so that the performance degradation caused by agglomeration is reduced.
3. The innovative use of the carbon quantum dot composite resin material improves the mechanical property, fluorescence property and flame retardance of the resin material, expands the application fields of various products and improves the added value of the products.
4. The quantum dot resin material can be molded by various methods such as injection molding, film blowing and the like to prepare a product. 5. The quantum dot resin material can control the concentration and the proportion of the carbon quantum dots in the resin base material at will, and can be customized according to the requirement.
Drawings
FIG. 1 is a schematic diagram showing fluorescence contrast of the quantum dot resin material of example 1 in a typical resin;
FIG. 2 is a fluorescence excitation and emission spectra of the quantum dot resin of example 1;
fig. 3 is a graph of the carbon quantum projection electron microscope synthesized in example 1.
Detailed Description
The technical solutions in the embodiments are clearly and perfectly described in conjunction with the embodiments of the present invention, and the embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to fall within the scope of the present invention.
Example 1:
1. the molar ratio was set to 1:1, preparing the citric acid and the urea into a solution with the concentration of 1% in deionized water, and transferring the prepared solution into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 200 ℃ for reaction, wherein the reaction duration is 8 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after the hydrothermal reaction kettle is cooled to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder for standby, wherein the optimal emission wavelength of the obtained quantum dot is 460nm as shown in fig. 2, and the average particle size of the quantum dot is 2.6nm as shown in fig. 3;
2. stearic acid amide and the carbon quantum dot powder obtained in the step 1 are mixed according to the mass ratio of 1:10, mixing the components A and polymethyl methacrylate according to the mass ratio of 1:100 in a high-speed mixer for 3 minutes at the speed of 1200r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 210 ℃, the screw speed is set to 25r/min, the feeding speed is set to 12r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw speed and maintain continuous strips, so that the flame-retardant fluorescent quantum dot polymethyl methacrylate resin with high strength is obtained as shown in figure 1;
example 2:
1. the molar ratio was set to 1:0.9 of citric acid and urea are prepared into a solution with the concentration of 1% in deionized water, and the prepared solution is transferred into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 180 ℃ for reaction, wherein the reaction duration is 6 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after cooling to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder with the average particle size of 3nm for later use;
2. erucamide and the carbon quantum dot powder obtained in the step 1 are mixed according to the mass ratio of 1:50, mixing the components A and the polyethylene according to the mass ratio of 1:80 in a high-speed mixer for 3 minutes at the speed of 1200r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 180 ℃, the screw speed is set to 20r/min, the feeding speed is set to 13r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw speed and maintain continuous strips, so that the flame-retardant fluorescent quantum dot polyethylene particles with high strength are obtained;
example 3:
1. the molar ratio was set to 1:0.8 of citric acid and urea are prepared into a solution with the concentration of 1% in deionized water, and the prepared solution is transferred into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 200 ℃ for reaction, wherein the reaction duration is 9 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after cooling to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder with the average particle size of 2.5nm for later use;
2. and (2) mixing ethylene bis-stearamide with the carbon quantum dot powder obtained in the step (1) according to the mass ratio of 1:30, mixing the components A and the polypropylene according to the mass ratio of 1:60 in a high-speed mixer for 3 minutes at the speed of 1000r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 190 ℃, the screw speed is set to 28r/min, the feeding speed is set to 15r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw speed and maintain continuous strips, so that the flame-retardant fluorescent quantum dot polyethylene particles with high strength are obtained;
example 4:
1. the molar ratio was set to 1:0.7 of citric acid and urea are prepared into a solution with the concentration of 1% in deionized water, and the prepared solution is transferred into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 200 ℃ for reaction, wherein the reaction duration is 10 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after cooling to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder with the average particle size of 2.8nm for later use;
2. paraffin and the carbon quantum dot powder obtained in the step 1 are mixed according to the mass ratio of 1:10, mixing the components A and the polystyrene according to the mass ratio of 1:40 in a high-speed mixer for 3 minutes at the speed of 1400r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 280 ℃, the screw rotating speed is set to 22r/min, the feeding speed is set to 15r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw rotating speed and maintain continuous strips, so that the flame-retardant fluorescent quantum dot polystyrene particles with high strength are obtained;
example 5:
1. the molar ratio was set to 1:0.6 of citric acid and urea are prepared into a solution with the concentration of 1% in deionized water, and the prepared solution is transferred into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 200 ℃ for reaction, wherein the reaction duration is 7 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after cooling to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder with the average particle size of 2.6nm for later use;
2. and (2) mixing ethylene bis-stearamide with the carbon quantum dot powder obtained in the step (1) according to the mass ratio of 1:20, and mixing the component A and the polycarbonate in a mass ratio of 1:30 in a high-speed mixer for 3 minutes at a speed of 1200r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 250 ℃, the screw speed is set to 21r/min, the feeding speed is 10r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw speed and maintain continuous strips, so that the flame-retardant fluorescent quantum dot polycarbonate particles with high strength are obtained;
example 6:
1. the molar ratio was set to 1:0.5 of citric acid and urea are prepared into a solution with the concentration of 2% in deionized water, and the prepared solution is transferred into a hydrothermal reaction kettle, wherein the liquid level is not more than two thirds of the reaction kettle. Putting the hydrothermal reaction kettle into a high-temperature oven at 200 ℃ for reaction, wherein the reaction duration is 6 hours, finally taking out the hydrothermal reaction kettle, opening the hydrothermal reaction kettle after cooling to room temperature, taking out the quantum dot solution, and drying to obtain quantum dot powder with the average particle size of 2.6nm for later use;
2. and (2) mixing ethylene bis-stearamide with the carbon quantum dot powder obtained in the step (1) according to the mass ratio of 1:10, mixing the components A and the polyethylene terephthalate in a mass ratio of 1:10 in a high-speed mixer for 4 minutes at a speed of 1400r/min to form a component B for later use;
3. putting the component B into a double-screw extruder for melting, mixing and granulating, wherein the melt temperature of the double-screw extruder is set to 220 ℃, the screw rotating speed is set to 23r/min, the feeding speed is 11r/min, bracing and cooling are carried out in a water cooling mode after extrusion, and the granulating speed is set to be parallel to the screw rotating speed and maintain continuous strips, so that the high-strength flame-retardant fluorescent quantum dot polyethylene terephthalate particles are obtained;
Claims (5)
1. the preparation method of the quantum dot resin material comprises the following specific steps:
step one: preparing quantum dot powder; dissolving citric acid and urea serving as raw materials in deionized water to prepare a solution, transferring the solution into a hydrothermal kettle, placing the hydrothermal kettle into a high-temperature oven for reaction, taking out the hydrothermal reaction kettle after the reaction is finished, opening the hydrothermal reaction kettle after cooling, taking out a quantum dot solution, and drying to obtain quantum dot powder;
step two: compounding ingredients; the dispersing agent and the quantum dot powder are mixed according to the mass ratio of 1: mixing the components in a ratio of (10) to (50) to form a component A; the mass ratio of the component A to the resin material is 1: mixing and stirring the materials in a high-speed mixer according to the proportion of (10-100) to form a composite ingredient;
step three: extruding and granulating; extruding and granulating the composite ingredients through double screws at high temperature to form a quantum dot resin material;
wherein the dispersing agent is one or more of stearic acid amide, erucic acid amide, ethylene bisstearic acid amide or paraffin wax; the resin-based material is one or more of polyethylene, polypropylene, polymethyl methacrylate, polystyrene, polycarbonate or polyethylene terephthalate.
2. The process according to claim 1, wherein in step one the molar ratio of citric acid to urea is 1: (0.5-1) preparing a solution with a mass concentration of 1-2%; the temperature of the high-temperature oven is 180-200 ℃, and the reaction time is 6-10 hours.
3. The preparation method of claim 1, wherein the rotation speed of the high-speed mixer in the second step is 1000-1400r/min, and the mixing and stirring time is 2-4 minutes.
4. The method of claim 1, wherein the twin screw extruder parameters in step three are: the temperature of the melt is set to be 170-280 ℃, the rotating speed of the screw is set to be 20-28r/min, and the feeding speed is set to be 10-15r/min.
5. The method of claim 1, wherein the resulting quantum dot resin material has an emission wavelength between 460nm and 490 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011641779.7A CN114685921B (en) | 2020-12-31 | 2020-12-31 | Preparation method of quantum dot resin material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011641779.7A CN114685921B (en) | 2020-12-31 | 2020-12-31 | Preparation method of quantum dot resin material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114685921A CN114685921A (en) | 2022-07-01 |
| CN114685921B true CN114685921B (en) | 2023-09-26 |
Family
ID=82135676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011641779.7A Active CN114685921B (en) | 2020-12-31 | 2020-12-31 | Preparation method of quantum dot resin material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114685921B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115651291A (en) * | 2022-07-13 | 2023-01-31 | 北京化工大学 | In-situ growth multicolor fluorescent carbon dot resin material and preparation method and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045242A (en) * | 2013-01-21 | 2013-04-17 | 吉林大学 | Preparation method of carbon dot having high fluorescent quantum yield |
| CN105271172A (en) * | 2015-11-05 | 2016-01-27 | 东华大学 | Preparation method of super-high-quantum-yield carbon quantum dots with citric acid-urea as raw materials |
| CN108822527A (en) * | 2018-05-25 | 2018-11-16 | 陕西科技大学 | The modified aqueous polyurethane nano composite material and preparation method of carbon quantum dot |
| CN109679007A (en) * | 2018-12-29 | 2019-04-26 | 厦门市米宫科技有限公司 | A kind of polymolecularity quantum dot injection molding material rice and preparation method thereof |
| CN110819097A (en) * | 2019-10-29 | 2020-02-21 | 南京工业大学 | Carbon quantum dot-polymer composite material, preparation and application |
| CN113603993A (en) * | 2021-07-13 | 2021-11-05 | 南京工业大学 | Preparation method of self-healing polymer-nano composite material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3699651A4 (en) * | 2017-10-17 | 2021-07-14 | NS Materials Inc. | Resin moulded body, production method therefor, and wavelength conversion member |
-
2020
- 2020-12-31 CN CN202011641779.7A patent/CN114685921B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045242A (en) * | 2013-01-21 | 2013-04-17 | 吉林大学 | Preparation method of carbon dot having high fluorescent quantum yield |
| CN105271172A (en) * | 2015-11-05 | 2016-01-27 | 东华大学 | Preparation method of super-high-quantum-yield carbon quantum dots with citric acid-urea as raw materials |
| CN108822527A (en) * | 2018-05-25 | 2018-11-16 | 陕西科技大学 | The modified aqueous polyurethane nano composite material and preparation method of carbon quantum dot |
| CN109679007A (en) * | 2018-12-29 | 2019-04-26 | 厦门市米宫科技有限公司 | A kind of polymolecularity quantum dot injection molding material rice and preparation method thereof |
| CN110819097A (en) * | 2019-10-29 | 2020-02-21 | 南京工业大学 | Carbon quantum dot-polymer composite material, preparation and application |
| CN113603993A (en) * | 2021-07-13 | 2021-11-05 | 南京工业大学 | Preparation method of self-healing polymer-nano composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114685921A (en) | 2022-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107987503B (en) | Spraying-free high-impact PC alloy material with metallic luster and preparation method thereof | |
| CN101392077B (en) | Polypropylene color master-batch with pearlescent interference effect and preparation method thereof | |
| CN105754334B (en) | A kind of selective low power laser sintered nylon powder and preparation method thereof | |
| CN100497458C (en) | Biologically degradable starch base high molecular composition, film made thereof, and its preparing method | |
| CN113025002B (en) | Degradable foaming material and preparation method thereof | |
| CN114685921B (en) | Preparation method of quantum dot resin material | |
| CN109233229A (en) | A kind of 3D printing PLA silk material and preparation method thereof of shock resistance ultraviolet aging resistance | |
| CN111978644B (en) | Polypropylene breathable film and preparation method thereof | |
| CN101705063A (en) | High molecular bonding resin for aluminum composite panel and preparation method thereof | |
| CN112143184A (en) | Biodegradable color master batch and preparation method thereof | |
| CN1213093C (en) | Plastic coloring tangerine mother particle | |
| CN112677599A (en) | PE multilayer barrier composite film and preparation method thereof | |
| CN113549313A (en) | Low-temperature-resistant PC composite material and preparation process thereof | |
| CN113527851B (en) | Polylactic acid carrier color master batch and preparation method thereof | |
| CN101225222B (en) | Polylactic acid as well as derivative composite material and preparation method thereof | |
| CN105440621B (en) | PLA noctilucence master batch and preparation method thereof | |
| CN102850734A (en) | High-transmittance high-shading PET composition and preparation method thereof | |
| CN103144392A (en) | Photostable antimicrobial polypropylene material product and preparation method thereof | |
| CN113402736A (en) | Antibacterial color master batch and preparation method thereof | |
| CN108059804B (en) | PBAT degradation color master batch and preparation method thereof | |
| CN103627072B (en) | High transparent polyolefin film master batch | |
| WO2020078682A1 (en) | An additive for plastic injection processes and additive production method | |
| CN111234456A (en) | Anti-aging and mildew-proof polyether-ether-ketone material and preparation method thereof | |
| CN117986726B (en) | Lignin composite nano microsphere modified PE plastic and preparation method and application thereof | |
| CN113881121B (en) | High-coloring high-aging-resistance polyethylene color master batch and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |