CN114573936A - Infrared transmission plastic and preparation method thereof - Google Patents
Infrared transmission plastic and preparation method thereof Download PDFInfo
- Publication number
- CN114573936A CN114573936A CN202210341360.2A CN202210341360A CN114573936A CN 114573936 A CN114573936 A CN 114573936A CN 202210341360 A CN202210341360 A CN 202210341360A CN 114573936 A CN114573936 A CN 114573936A
- Authority
- CN
- China
- Prior art keywords
- carbon black
- resin
- black powder
- maleic anhydride
- mixing
- 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.)
- Pending
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 22
- 239000004033 plastic Substances 0.000 title claims abstract description 22
- 230000005540 biological transmission Effects 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000006229 carbon black Substances 0.000 claims abstract description 151
- 239000011347 resin Substances 0.000 claims abstract description 98
- 229920005989 resin Polymers 0.000 claims abstract description 98
- 239000000843 powder Substances 0.000 claims abstract description 59
- 238000002156 mixing Methods 0.000 claims abstract description 51
- 239000002033 PVDF binder Substances 0.000 claims abstract description 40
- 239000011159 matrix material Substances 0.000 claims abstract description 40
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 40
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 239000003292 glue Substances 0.000 claims abstract description 23
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 21
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 238000001694 spray drying Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 42
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 8
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 239000007921 spray Substances 0.000 description 11
- 239000011268 mixed slurry Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 239000002344 surface layer Substances 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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/06—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
-
- 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
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
-
- 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
- C08J2327/00—Characterised by the use 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 a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use 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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides an infrared transmission plastic and a preparation method thereof, belonging to the field of high polymer material engineering. The product developed by the invention comprises matrix resin and carbon black powder; the carbon black powder consists of carbon black and PVDF resin; the matrix resin comprises EVA resin and LDPE resin; the amount of the PVDF resin is 3-5% by mass of the carbon black. When the carbon black powder is prepared, the PVDF resin is dissolved in a solvent to obtain a glue solution, then the carbon black is added into the glue solution in batches, and after uniform mixing, spray drying is carried out to obtain the carbon black powder with the D50 of 150-200 mu m and the particle size distribution range of 50-500 mu m. The product obtained by the invention has excellent infrared transmission performance and stable product performance.
Description
Technical Field
The invention belongs to the field of high polymer material engineering, and particularly relates to an infrared transmission plastic and a preparation method thereof.
Background
With the increased exploration of infrared rays, infrared rays have been applied to the sides of everyone, such as infrared ovens for home use, infrared lamp warmers for bathrooms, paint spray for drying automobile surfaces with infrared rays industrially, and physical therapy with infrared rays medically.
Due to the wide application of infrared rays, the preparation of infrared transmission materials is particularly important, wherein the requirements of infrared transmission plastics are wider. The infrared transmission plastic has black appearance color, can effectively cut off visible light and transmit infrared light, and has stable optical performance and good applicability. Infrared transmissive plastics, while appearing black in appearance, are actually quite different from common black plastics.
Patent application 2020115664496 discloses an infrared light permeable black plastic and a preparation method and application thereof. The method mainly comprises the steps of adding black powder into a compounded matrix resin system, and utilizing the synergistic effect of different resins in the matrix resin to improve the comprehensive mechanical property of a product, however, although the compounding of different resin systems can complement each other to make up the defects of the resins, the principle of the resin compounding system is complex, and it is unknown how to controllably play a good synergistic effect, so that how to further improve the infrared transmission performance on the basis is unknown to technicians in the field, and the inventor finds that in the actual use process, the infrared transmission performance of the obtained product is rapidly attenuated along with the use of the product, so that the performance of the product cannot be kept stable for a long time, and therefore, how to develop a product with excellent infrared transmission performance and long-term stability, is one of the technical difficulties besetting the technicians in the field.
Disclosure of Invention
Aiming at the defects that the infrared transmission performance of the existing infrared-light-permeable black plastic product cannot be further improved and the performance is rapidly attenuated along with the use of the product, the infrared-light-permeable black plastic and the preparation method thereof are provided.
In order to achieve the above object, according to one aspect of the present invention, there is provided an infrared light transmissive black plastic.
In another aspect of the invention, a preparation method of the infrared light permeable black plastic is also provided.
An infrared transmission plastic comprises matrix resin and carbon black powder;
the carbon black powder consists of carbon black and PVDF resin;
the matrix resin comprises EVA resin and LDPE resin;
the dosage of the PVDF resin is 3-5% of the mass of the carbon black;
the carbon black powder is obtained by mixing carbon black, the PVDF resin and a solvent and then carrying out spray drying.
The technical scheme adopts EVA resin and LDPE resin as matrix resin, in addition, carbon black powder consisting of carbon black and PVDF resin is added into a matrix resin system, and the carbon black powder is obtained by mixing carbon black, the PVDF resin and a solvent and then carrying out spray drying; the fundamental purpose of the design is that firstly, PVDF is used as a binder, which can provide binding performance after solvent evaporation in the spray drying process, small-particle carbon black is bound, and spherical or sphere-like carbon black powder is formed through spray drying, and the PVDF is used as a nonpolar binder, which has weaker binding performance to the carbon black based on the nonpolarity of the PVDF and the controlled addition amount, so that the carbon black powder is easy to collapse in the mixing process after the carbon black powder is added into a matrix resin system, and the collapse of the carbon black powder occurs in the mixing process with the resin and gradually occurs along with the mixing process, so that the carbon black with light weight can be prevented from floating on the surface layer of the resin system in the initial stage of mixing and being difficult to be uniformly mixed with the matrix resin, and the collapsed carbon black in the mixing process, the carbon black dispersed in the PVDF-based composite material can be well and uniformly mixed with the matrix resin under the coordination of the PVDF, and the dispersed carbon black can stably exist in the matrix resin under the coordination of the PVDF, so that the phase separation is avoided, and the product not only has good infrared transmission performance, but also can be durably maintained based on the stable dispersion of the carbon black and the PVDF in the matrix resin system.
Further, the D50 of the carbon black powder is 150-200 μm; the particle size distribution range of the carbon black powder is 50-500 mu m.
According to the technical scheme, the particle size and the particle size distribution of the carbon black powder are further regulated, and the carbon black powder in the size range is effectively controlled under the weak cohesive force action of PVDF when being added into the matrix resin of the system, most of the carbon black powder is stirred and mixed with the resin in the middle and later periods, and the carbon black powder is not easy to float on the surface of the matrix resin when being added into the matrix resin and is easy to mix with the resin.
Further, the EVA resin is maleic anhydride grafted EVA; the LDPE is maleic anhydride grafted LDPE.
Further, in the maleic anhydride grafted EVA, the grafting rate of maleic anhydride is 1.0-1.2%; in the maleic anhydride grafted LDPE, the grafting rate of maleic anhydride is 2.0-2.4%; the mass ratio of the matrix resin to the carbon black powder is 10: 1-20: 1.
according to the technical scheme, a matrix resin system grafted by maleic anhydride is further selected, the grafting rate of the maleic anhydride and the use amount of the resin and the carbon black powder are controlled, so that the excellent dispersing effect can be obtained when the carbon black powder after the collaborative collapsibility of PVDF is dispersed in the matrix resin system.
Further, the mass ratio of the maleic anhydride grafted EVA to the maleic anhydride grafted LDPE is 3: 1-5: 1.
further, the solvent is prepared from NMP and methanol according to a mass ratio of 20: 1-40: 1 is prepared by compounding.
A preparation method of infrared transmission plastic comprises the following specific preparation steps:
preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 3-5% of the mass of the carbon black;
firstly, dissolving PVDF resin in a solvent to obtain a glue solution, adding carbon black into the glue solution in batches, uniformly mixing, and carrying out spray drying to obtain carbon black powder;
preparation of the product:
and (3) uniformly mixing the carbon black powder with EVA resin and LDPE resin, and then extruding and molding to obtain the product.
Further, the adding of carbon black to the glue solution in batches comprises:
equally dividing the carbon black into 3-5 parts by mass, adding one part of the carbon black, stirring and mixing until the viscosity is kept unchanged, adding the second part of the carbon black, continuously stirring and mixing until the viscosity is kept unchanged, adding the carbon black in batches in the way until the carbon black is added, supplementing the solvent, and adjusting the viscosity to be 1500-1800 mPa.S.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 3% of the mass of the carbon black;
firstly, PVDF and a solvent are mixed according to a mass ratio of 1: 10, stirring and mixing the materials by using a stirrer at the rotating speed of 300r/min until the PVDF is completely dissolved to obtain a glue solution;
the solvent is prepared from NMP and methanol according to a mass ratio of 20: 1 is compounded;
equally dividing the weighed carbon black into 3 parts, firstly adding one part of the carbon black into the glue solution, stirring and mixing the mixture by a stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, then adding the second part of the carbon black, continuously stirring and mixing the mixture by the stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, adding the rest part of the carbon black in batches, supplementing a solvent after the carbon black is added, and adjusting the viscosity to 1500mPa & S to obtain a mixed slurry;
when the carbon black is added into the glue solution and stirring is started by using a stirrer, the carbon black is not completely and uniformly dispersed in the system, so that the viscosity of the system is larger at the initial stirring stage, and the viscosity gradually decreases and tends to be stable and unchanged as the carbon black is gradually and uniformly dispersed in the system until the carbon black is completely and uniformly dispersed;
conveying the mixed slurry into a spray dryer through a screw pump, controlling the slurry conveying speed to be 30g/min, and carrying out spray granulation under the conditions that the main disc rotating speed is 6000r/min, the air inlet temperature is 120 ℃, and the air outlet temperature is 80 ℃ to obtain carbon black powder with D50 of 150 mu m and the particle size distribution range of 50-300 mu m;
preparation of the product:
EVA resin with maleic anhydride grafting rate of 1.0% and LDPE resin with maleic anhydride grafting rate of 2.0% are mixed according to the mass ratio of 3: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 2 hours at the temperature of 40 ℃ by using a stirrer at the rotating speed of 400r/min to obtain matrix resin, and mixing the matrix resin and carbon black powder according to the mass ratio of 10: 1, adding carbon black powder into the matrix resin, continuously stirring for 3 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Example 2
Preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 4% of the mass of the carbon black;
firstly, PVDF and a solvent are mixed according to a mass ratio of 1: 12, stirring and mixing the materials by a stirrer at the rotating speed of 400r/min until the PVDF is completely dissolved to obtain a glue solution;
the solvent is prepared from NMP and methanol according to a mass ratio of 30: 1 is compounded;
equally dividing the weighed carbon black into 4 parts, firstly adding one part of the carbon black into the glue solution, stirring and mixing the mixture by using a stirrer at the rotating speed of 700r/min until the viscosity keeps stable and unchanged, then adding a second part of the carbon black, continuously stirring and mixing the mixture by using the stirrer at the rotating speed of 700r/min until the viscosity keeps stable and unchanged, adding the rest part of the carbon black in batches, supplementing a solvent after the carbon black is added, and adjusting the viscosity to 1600mPa & S to obtain a mixed slurry;
when the carbon black is added into the glue solution and stirring is started by using a stirrer, the carbon black is not completely and uniformly dispersed in the system, so that the viscosity of the system is larger at the initial stirring stage, and the viscosity gradually decreases and tends to be stable and unchanged as the carbon black is gradually and uniformly dispersed in the system until the carbon black is completely and uniformly dispersed;
conveying the mixed slurry into a spray dryer through a screw pump, controlling the slurry conveying speed to be 50g/min, and carrying out spray granulation under the conditions that the main disc rotating speed is 7000r/min, the air inlet temperature is 130 ℃, and the air outlet temperature is 82 ℃ to obtain carbon black powder with D50 of 180 mu m and the particle size distribution range of 60-400 mu m;
preparation of the product:
EVA resin with the maleic anhydride grafting rate of 1.1 percent and LDPE resin with the maleic anhydride grafting rate of 2.2 percent are mixed according to the mass ratio of 4: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 3 hours at the temperature of 45 ℃ by using a stirrer at the rotating speed of 600r/min to obtain matrix resin, and then mixing the matrix resin and carbon black powder according to the mass ratio of 15: 1, adding carbon black powder into the matrix resin, continuously stirring for 4 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Example 3
Preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 5% of the mass of the carbon black;
firstly, PVDF and a solvent are mixed according to a mass ratio of 1: 15, stirring and mixing the materials by using a stirrer at the rotating speed of 500r/min until the PVDF is completely dissolved to obtain a glue solution;
the solvent is prepared from NMP and methanol according to the mass ratio of 40: 1 is compounded;
equally dividing the weighed carbon black into 5 parts, firstly adding one part of the carbon black into the glue solution, stirring and mixing the mixture by a stirrer at the rotating speed of 800r/min until the viscosity keeps stable and unchanged, then adding the second part of the carbon black, continuously stirring and mixing the mixture by the stirrer at the rotating speed of 800r/min until the viscosity keeps stable and unchanged, adding the rest part of the carbon black in batches, supplementing a solvent after the carbon black is added, and adjusting the viscosity to 1800mPa & S to obtain a mixed slurry;
when the carbon black is added into the glue solution and stirring is started by using a stirrer, the carbon black is not completely and uniformly dispersed in the system, so that the viscosity of the system is larger at the initial stirring stage, and the viscosity gradually decreases and tends to be stable and unchanged as the carbon black is gradually and uniformly dispersed in the system until the carbon black is completely and uniformly dispersed;
conveying the mixed slurry into a spray dryer through a screw pump, controlling the slurry conveying speed to be 60g/min, and performing spray granulation under the conditions that the main disc rotating speed is 8000r/min, the air inlet temperature is 140 ℃, and the air outlet temperature is 85 ℃ to obtain carbon black powder with D50 of 200 mu m and the particle size distribution range of 100-500 mu m;
preparation of the product:
EVA resin with the maleic anhydride grafting rate of 1.2 percent and LDPE resin with the maleic anhydride grafting rate of 2.4 percent are mixed according to the mass ratio of 5: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 4 hours at the temperature of 48 ℃ by using a stirrer at the rotating speed of 800r/min to obtain matrix resin, and then mixing the matrix resin and carbon black powder according to the mass ratio of 20: 1, adding carbon black powder into the matrix resin, continuously stirring for 5 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Example 4
This example differs from example 1 in that: the EVA resin and the LDPE resin are not grafted and modified by maleic anhydride, and the rest conditions are kept unchanged.
Example 5
This example differs from example 1 in that: methanol was not added and the remaining conditions were kept constant.
Example 6
This example differs from example 1 in that: wherein the added carbon black powder has a D50 of 30 μm and a particle size distribution range of 10-45 μm, and the rest conditions are kept unchanged.
Comparative example 1
Weighing carbon black and PVDF resin accounting for 3% of the mass of the carbon black, and uniformly stirring and mixing to obtain carbon black powder;
preparation of the product:
EVA resin with maleic anhydride grafting rate of 1.0% and LDPE resin with maleic anhydride grafting rate of 2.0% are mixed according to the mass ratio of 3: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 2 hours at the temperature of 40 ℃ by using a stirrer at the rotating speed of 400r/min to obtain matrix resin, and then mixing the matrix resin and carbon black powder according to the mass ratio of 10: 1, adding carbon black powder into the matrix resin, continuously stirring for 3 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Comparative example 2
Preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 2.5 percent of the mass of the carbon black;
firstly, PVDF and a solvent are mixed according to a mass ratio of 1: 10, stirring and mixing the materials by using a stirrer at the rotating speed of 300r/min until the PVDF is completely dissolved to obtain a glue solution;
the solvent is prepared from NMP and methanol according to a mass ratio of 20: 1 is compounded;
equally dividing the weighed carbon black into 3 parts, firstly adding one part of the carbon black into the glue solution, stirring and mixing the mixture by a stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, then adding the second part of the carbon black, continuously stirring and mixing the mixture by the stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, adding the rest part of the carbon black in batches, supplementing a solvent after the carbon black is added, and adjusting the viscosity to 1500mPa & S to obtain a mixed slurry;
when the carbon black is added into the glue solution and stirring is started by using a stirrer, the carbon black is not completely and uniformly dispersed in the system, so that the viscosity of the system is larger at the initial stirring stage, and the viscosity gradually decreases and tends to be stable and unchanged as the carbon black is gradually and uniformly dispersed in the system until the carbon black is completely and uniformly dispersed;
conveying the mixed slurry into a spray dryer through a screw pump, controlling the slurry conveying speed to be 30g/min, and carrying out spray granulation under the conditions that the main disc rotating speed is 6000r/min, the air inlet temperature is 120 ℃, and the air outlet temperature is 80 ℃ to obtain carbon black powder with the D50 of 150 mu m and the particle size distribution range of 50-300 mu m;
preparation of the product:
EVA resin with maleic anhydride grafting rate of 1.0% and LDPE resin with maleic anhydride grafting rate of 2.0% are mixed according to the mass ratio of 3: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 2 hours at the temperature of 40 ℃ by using a stirrer at the rotating speed of 400r/min to obtain matrix resin, and then mixing the matrix resin and carbon black powder according to the mass ratio of 10: 1, adding carbon black powder into the matrix resin, continuously stirring for 3 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Comparative example 3
Preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 5.5 percent of the mass of the carbon black;
firstly, PVDF and a solvent are mixed according to a mass ratio of 1: 10, stirring and mixing the materials by using a stirrer at the rotating speed of 300r/min until the PVDF is completely dissolved to obtain a glue solution;
the solvent is prepared from NMP and methanol according to a mass ratio of 20: 1 is compounded;
equally dividing the weighed carbon black into 3 parts, firstly adding one part of the carbon black into the glue solution, stirring and mixing the mixture by a stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, then adding the second part of the carbon black, continuously stirring and mixing the mixture by the stirrer at the rotating speed of 600r/min until the viscosity keeps stable and unchanged, adding the rest part of the carbon black in batches, supplementing a solvent after the carbon black is added, and adjusting the viscosity to 1500mPa & S to obtain a mixed slurry;
when the carbon black is added into the glue solution and stirring is started by using a stirrer, the carbon black is not completely and uniformly dispersed in the system, so that the viscosity of the system is larger at the initial stirring stage, and the viscosity gradually decreases and tends to be stable and unchanged as the carbon black is gradually and uniformly dispersed in the system until the carbon black is completely and uniformly dispersed;
conveying the mixed slurry into a spray dryer through a screw pump, controlling the slurry conveying speed to be 30g/min, and carrying out spray granulation under the conditions that the main disc rotating speed is 6000r/min, the air inlet temperature is 120 ℃, and the air outlet temperature is 80 ℃ to obtain carbon black powder with the D50 of 150 mu m and the particle size distribution range of 50-300 mu m;
preparation of the product:
EVA resin with maleic anhydride grafting rate of 1.0% and LDPE resin with maleic anhydride grafting rate of 2.0% are mixed according to the mass ratio of 3: 1, mixing and pouring the mixture into a mixer, stirring and mixing the mixture for 2 hours at the temperature of 40 ℃ by using a stirrer at the rotating speed of 400r/min to obtain matrix resin, and then mixing the matrix resin and carbon black powder according to the mass ratio of 10: 1, adding carbon black powder into the matrix resin, continuously stirring for 3 hours by using a stirrer, transferring the materials in the mixer into a double-screw extruder, and performing extrusion molding to obtain the product.
Performance testing
Respectively manufacturing products prepared in the examples and the comparative examples into color plates with the specification of 50mm multiplied by 20mm multiplied by 2mm, cooling and placing for 24h, and testing the infrared transmittance by using a spectrophotometer; and placing the color plate in an accelerated aging test box, and testing the infrared light transmittance again after accelerated aging is carried out for 30 days under the conditions that the oxygen content is 20%, the relative humidity is 60% and the temperature is 35 ℃, wherein the specific test results are shown in the following table.
Table 1: product performance test results
The test results in table 1 show that the product obtained by the invention not only has excellent infrared transmission performance, but also has small performance attenuation after aging test, and the performance is effectively maintained.
Claims (8)
1. An infrared transmission plastic is characterized by comprising matrix resin and carbon black powder;
the carbon black powder consists of carbon black and PVDF resin;
the matrix resin comprises EVA resin and LDPE resin;
the dosage of the PVDF resin is 3-5% of the mass of the carbon black;
the carbon black powder is obtained by mixing carbon black, PVDF resin and a solvent and then carrying out spray drying.
2. An infrared transmitting plastic as claimed in claim 1, wherein said carbon black powder has a D50 of 150-200 μm; the particle size distribution range of the carbon black powder is 50-500 mu m.
3. The infrared transmitting plastic of claim 1, wherein the EVA resin is maleic anhydride grafted EVA; the LDPE is maleic anhydride grafted LDPE.
4. The infrared transmitting plastic of claim 3, wherein in the maleic anhydride grafted EVA, the maleic anhydride grafting rate is 1.0-1.2%; in the maleic anhydride grafted LDPE, the grafting rate of maleic anhydride is 2.0-2.4%; the mass ratio of the matrix resin to the carbon black powder is 10: 1-20: 1.
5. the infrared transmitting plastic as claimed in claim 4, wherein the mass ratio of the maleic anhydride grafted EVA to the maleic anhydride grafted LDPE is 3: 1-5: 1.
6. an infrared transmitting plastic according to claim 1, wherein said solvent is a mixture of NMP and methanol in a mass ratio of 20: 1-40: 1 is prepared by compounding.
7. The method for preparing the infrared transmission plastic as claimed in claim 1, which comprises the following steps:
preparing carbon black powder:
weighing carbon black and PVDF resin accounting for 3-5% of the mass of the carbon black;
firstly, dissolving PVDF resin in a solvent to obtain a glue solution, adding carbon black into the glue solution in batches, uniformly mixing, and carrying out spray drying to obtain carbon black powder;
preparation of the product:
and (3) uniformly mixing the carbon black powder with EVA resin and LDPE resin, and then extruding and molding to obtain the product.
8. The method of claim 7, wherein the adding carbon black to the glue solution in batches comprises:
equally dividing the carbon black into 3-5 parts by mass, adding one part of the carbon black, stirring and mixing until the viscosity is kept unchanged, adding the second part of the carbon black, continuously stirring and mixing until the viscosity is kept unchanged, adding the carbon black in batches in the way until the carbon black is added, supplementing the solvent, and adjusting the viscosity to be 1500-1800 mPa.S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210341360.2A CN114573936A (en) | 2022-04-02 | 2022-04-02 | Infrared transmission plastic and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210341360.2A CN114573936A (en) | 2022-04-02 | 2022-04-02 | Infrared transmission plastic and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114573936A true CN114573936A (en) | 2022-06-03 |
Family
ID=81785572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210341360.2A Pending CN114573936A (en) | 2022-04-02 | 2022-04-02 | Infrared transmission plastic and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114573936A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898669A (en) * | 2020-12-25 | 2021-06-04 | 青岛中新华美塑料有限公司 | Infrared light permeable black plastic and preparation method and application thereof |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
-
2022
- 2022-04-02 CN CN202210341360.2A patent/CN114573936A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898669A (en) * | 2020-12-25 | 2021-06-04 | 青岛中新华美塑料有限公司 | Infrared light permeable black plastic and preparation method and application thereof |
| CN113471578A (en) * | 2021-06-04 | 2021-10-01 | 苏州领湃新能源科技有限公司 | Power energy storage battery shell, preparation method and battery |
Non-Patent Citations (1)
| Title |
|---|
| 周小卫等: "《纳米氧化钒基锂离子电池阴极材料的制备及性能研究》", vol. 1, 同济大学出版社, pages: 54 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0765899B1 (en) | Process of modifying dispersion powder compositions | |
| CN103980432B (en) | Containing polycarboxylate water-reducer and its preparation method of modified soluble acrylate | |
| TW202009267A (en) | Hydrophobic thermoplastic Starch and method for manufacturing the same | |
| CN102093624B (en) | Method for preparing color master batch for ethylene vinyl acetate (EVA) shoe material | |
| CN101220158B (en) | Organic silicon granule with high brightness and good photostability, its production method and diffuser for the same | |
| CN104830078A (en) | Modified asphalt binder powder and preparation method thereof | |
| CN107163514A (en) | A kind of method that once step stretching prepares the high infrared high-barrier optical thin film thoroughly of visible ray | |
| AU2006347136B2 (en) | Process for preparing granules of pigments by means of double extrusion | |
| CN106188833A (en) | A kind of antistatic straw wood plastic composite and preparation method thereof | |
| CN114573936A (en) | Infrared transmission plastic and preparation method thereof | |
| CN201745107U (en) | Production device of functional polyamide-6 granula | |
| CN103044842B (en) | Preparation method of bimodal ABS resin | |
| CN112980054A (en) | Strip-shaped aluminum pigment for high white brightness of ABS (acrylonitrile butadiene styrene) and preparation method thereof | |
| CN106905668A (en) | A kind of stated polyesters master batch and a kind of technics of enhancing viscosity | |
| GB2029836A (en) | Plastics Based Composition | |
| CN104945877A (en) | Plastic masterbatch for electronic device and preparation method thereof | |
| CN111808525B (en) | Multiphase structure UV (ultraviolet) photocuring powder coating resin and preparation method thereof | |
| CN110511622B (en) | Color paste for preparing polymer color master batch based on supercritical fluid and preparation method thereof | |
| CN104151498A (en) | Preparation method for multi-component composite grafting modification resins used for hot melt adhesive | |
| CN109912875B (en) | Preparation method of micro-nano cellulose modified wood-plastic composite material | |
| CN115286465B (en) | Environment-friendly special fertilizer and preparation method thereof | |
| CN107868423A (en) | Electronic device plastic master batch and preparation method thereof | |
| CN1842367A (en) | Redispersing agents for redispersible polymer powders and redispersible polymer powders including same | |
| KR20160141078A (en) | Light diffusion powder and method for preparing the same | |
| CN113666672B (en) | Light photocatalytic stone-like composite material 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 | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Pei Inventor after: Gao Jianguo Inventor after: Zhao Chengfang Inventor after: Wang Dong Inventor after: Zhang Caicheng Inventor after: Guo Bin Inventor after: Xu Shize Inventor after: Zhao Shan Inventor before: Cao Pei Inventor before: Zhao Chengfang Inventor before: Wang Dong Inventor before: Zhang Caicheng Inventor before: Guo Bin Inventor before: Xu Shize Inventor before: Zhao Shan |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220603 |