CN113861689A - PSU carbon nanotube conductive master batch - Google Patents
PSU carbon nanotube conductive master batch Download PDFInfo
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- CN113861689A CN113861689A CN202111195488.4A CN202111195488A CN113861689A CN 113861689 A CN113861689 A CN 113861689A CN 202111195488 A CN202111195488 A CN 202111195488A CN 113861689 A CN113861689 A CN 113861689A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 32
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 30
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 27
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000002216 antistatic agent Substances 0.000 claims abstract description 13
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000012745 toughening agent Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 10
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 20
- 239000011159 matrix material Substances 0.000 claims description 16
- 239000000835 fiber Substances 0.000 claims description 15
- 239000002202 Polyethylene glycol Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229920001223 polyethylene glycol Polymers 0.000 claims description 12
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 5
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 5
- 230000005672 electromagnetic field Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000009775 high-speed stirring Methods 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 239000008096 xylene Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 3
- 229920002492 poly(sulfone) Polymers 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OUKZUIOFTUUCEN-UHFFFAOYSA-N 7$l^{6}-thiabicyclo[4.1.0]hepta-1,3,5-triene 7,7-dioxide Chemical compound C1=CC=C2S(=O)(=O)C2=C1 OUKZUIOFTUUCEN-UHFFFAOYSA-N 0.000 description 1
- OMIHGPLIXGGMJB-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]hepta-1,3,5-triene Chemical compound C1=CC=C2OC2=C1 OMIHGPLIXGGMJB-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 229920003247 engineering thermoplastic Polymers 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920012287 polyphenylene sulfone Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- 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
- C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
- C08J2381/06—Polysulfones; Polyethersulfones
-
- 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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K2201/001—Conductive additives
-
- 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
- C08K2201/011—Nanostructured additives
-
- 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
- C08K3/041—Carbon nanotubes
-
- 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
- C08K3/08—Metals
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a PSU/carbon nano tube conductive master batch which is prepared from the following raw materials in parts by weight: 84-91 parts of PSU polymer base material, 4-8 parts of activated carbon nanotube, 5-8 parts of toughening agent, 3-4 parts of polyethylene terephthalate, 1-5 parts of nano metal powder, 0.5-0.7 part of antistatic agent, 0.1-0.2 part of antioxidant and 0.04-0.07 part of butyl titanate coupling agent. Compared with the traditional PSU antistatic modified material, the active carbon nanotube filler used in the invention can be reduced by more than 5 times under the condition of reaching the same conductivity, so that the inherent characteristics of the PSU are hardly influenced, the influence on the mechanical property and the processing property of the composite material is low, and the durability of the antistatic property is ensured. Therefore, the PSU conductive master batch provided by the invention can expand the application range of PSU antistatic products and prolong the service life of the products.
Description
Technical Field
The invention belongs to the technical field of master batch manufacturing, and particularly relates to a PSU carbon nanotube conductive master batch.
Background
The polysulfone-based composite material refers to a polymer material containing sulfone groups in a molecular chain, and common materials mainly include polysulfone (psf, psu), polyethersulfone (pse) and polyphenylene sulfone (ppsu). The non-crystalline polymer has transparency and can maintain the tough property in some harsh environment. They can be exposed to hot water containing chlorine, strong acid and alkali and high temperature environment, and can work in the wide temperature range of-40 ℃ to 207 ℃. The phenylene ether segments increase the flexibility of the polymer backbone, exhibit high toughness, elongation, ductility, and are easily melt-processed. The excellent hydrolytic stability is the difference between polysulfone and other engineering thermoplastic materials, which is attributed to the hydrolysis resistance of the phenylene sulfone and ether groups.
At present, in the process of preparing master batches, the amount of the active carbon nanotube filler is large, the characteristics of PSU (particle swarm unit) are affected, and the durability of antistatic performance cannot be ensured.
Disclosure of Invention
The invention aims to provide the PSU/carbon nanotube conductive master batch which has low consumption of an active carbon nanotube filler, has no influence on the characteristics of PSU and can ensure the durability of antistatic performance.
In order to achieve the purpose, the invention adopts the following technical scheme:
the PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 84-91 parts of PSU polymer base material, 4-8 parts of activated carbon nanotube, 5-8 parts of toughening agent, 3-4 parts of polyethylene terephthalate, 1-5 parts of nano metal powder, 0.5-0.7 part of antistatic agent, 0.1-0.2 part of antioxidant and 0.04-0.07 part of butyl titanate coupling agent.
Further, the PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 88 parts of PSU polymer matrix material, 6 parts of activated carbon nanotube, 7 parts of toughening agent, 3.5 parts of polyethylene terephthalate, 3 parts of nano metal powder, 0.6 part of antistatic agent, 0.15 part of antioxidant and 0.06 part of butyl titanate coupling agent.
The preparation method of the PSU carbon nanotube conductive master batch comprises the following steps:
1) selecting activated carbon nanotubes in parts by weight to perform circumferential array on a circular silk tube to obtain a fiber layer, then uniformly mixing the fiber layer with a toughening agent, stirring at a high speed, and finally putting the fiber layer into an organic solvent to perform ultrasonic dispersion to obtain a material A;
2) heating a PSU polymer matrix material and polyethylene glycol terephthalate to a molten state, and then crushing the PSU polymer matrix material and the polyethylene glycol terephthalate into powdery particles at a temperature of between 40 ℃ below zero and 20 ℃ below zero by taking Honeywell R407c as a refrigeration medium to obtain a material X;
3) mixing nano metal powder and an antistatic agent, placing the mixture into a container, forming an electromagnetic field outside the container, performing rotation treatment, adding an antioxidant and a butyl titanate coupling agent, stirring at a high speed for 30-40 min, adding ethanol, oscillating for 2-3 h by using ultrasonic waves, filtering, performing vacuum drying, finally stirring the mixture with a material A and a material X at a low speed for 40-50 min, and then granulating through a double-screw extruder to obtain the PSU carbon nanotube conductive master batch.
According to the characteristics, the organic solvent in the step 1) is one of dimethylbenzene, cyclohexane or methyl acetate, and the rotating speed is 1300-1500 r/min.
According to the characteristics, the high-speed stirring rotating speed in the step 3) is 1300-1700 r/min, and the low-speed stirring rotating speed is 400-600 r/min.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, the carbon nano tube is added into a PSU material matrix as a conductive filler after being pretreated and modified, so that the PSU carbon nano tube conductive master batch is prepared. Compared with the traditional PSU antistatic modified material, the active carbon nanotube filler used in the invention can be reduced by more than 5 times under the condition of reaching the same conductivity, so that the inherent characteristics of the PSU are hardly influenced, the influence on the mechanical property and the processing property of the composite material is low, and the durability of the antistatic property is ensured. Therefore, the PSU conductive master batch provided by the invention can expand the application range of PP0-PBE antistatic products and prolong the service life of the products.
2) The resistivity in the present invention was 9.45X 104～9.51×104The conductive master batch has good conductive performance, does not generate agglomeration phenomenon, ensures that all raw materials have good compatibility, has the elongation at break of 17-21 percent, and improves the conductivityThe electric master batch has the electric conductivity and the elongation at break.
Detailed Description
Embodiments of the present invention will be described in more detail below. It should be understood, however, that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Those skilled in the art will appreciate that alternative embodiments can be devised from the following description without departing from the spirit and scope of the invention.
Example 1
The PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 84 parts of PSU polymer matrix material, 4 parts of activated carbon nano tube, 5 parts of toughening agent, 3 parts of polyethylene glycol terephthalate, 1 part of nano metal powder, 0.5 part of antistatic agent, 0.1 part of antioxidant and 0.04 part of butyl titanate coupling agent.
The preparation method of the PSU carbon nanotube conductive master batch comprises the following steps:
1) selecting activated carbon nanotubes in parts by weight to perform circumferential array on a circular silk tube to obtain a fiber layer, then uniformly mixing the fiber layer with a toughening agent, stirring at a high speed, and finally putting the fiber layer into an organic solvent to perform ultrasonic dispersion to obtain a material A; the organic solvent is one of dimethylbenzene, cyclohexane or methyl acetate, and the rotating speed is 1300 r/min.
2) Heating a PSU polymer matrix material and polyethylene glycol terephthalate to a molten state, and then crushing the PSU polymer matrix material and the polyethylene glycol terephthalate into powdery particles at-40 ℃ by taking Honeywell R407c as a refrigeration medium to obtain a material X;
3) mixing nano metal powder and an antistatic agent, placing the mixture into a container, forming an electromagnetic field outside the container, performing rotation treatment, adding an antioxidant and a butyl titanate coupling agent, stirring at a high speed for 30min, adding ethanol, oscillating for 2h by using ultrasonic waves, filtering, drying in vacuum, stirring the mixture, a material A and a material X at a low speed for 40min, and then cutting the mixture into particles through a double-screw extruder base to obtain the PSU carbon nanotube conductive master batch. The high-speed stirring speed is 1300r/min, and the low-speed stirring speed is 400 r/min.
Example 2
The PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 88 parts of PSU polymer matrix material, 6 parts of activated carbon nanotube, 7 parts of toughening agent, 3.5 parts of polyethylene terephthalate, 3 parts of nano metal powder, 0.6 part of antistatic agent, 0.15 part of antioxidant and 0.06 part of butyl titanate coupling agent.
The preparation method of the PSU carbon nanotube conductive master batch comprises the following steps:
1) selecting activated carbon nanotubes in parts by weight to perform circumferential array on a circular silk tube to obtain a fiber layer, then uniformly mixing the fiber layer with a toughening agent, stirring at a high speed, and finally putting the fiber layer into an organic solvent to perform ultrasonic dispersion to obtain a material A; the organic solvent is one of dimethylbenzene, cyclohexane or methyl acetate, and the rotating speed is 1400 r/min.
2) Heating a PSU polymer matrix material and polyethylene glycol terephthalate to a molten state, and then crushing the PSU polymer matrix material and the polyethylene glycol terephthalate into powdery particles at-30 ℃ by taking Honeywell R407c as a refrigeration medium to obtain a material X;
3) mixing nano metal powder and an antistatic agent, placing the mixture into a container, forming an electromagnetic field outside the container, performing rotation treatment, adding an antioxidant and a butyl titanate coupling agent, stirring at a high speed for 35min, adding ethanol, oscillating for 2.5h by using ultrasonic waves, filtering, performing vacuum drying, finally stirring the mixture, a material A and a material X at a low speed for 45min, and then performing granulation through a double-screw extruder to obtain the PSU carbon nanotube conductive master batch. The high-speed stirring speed is 1500r/min, and the low-speed stirring speed is 500 r/min.
Example 3
The PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 91 parts of PSU polymer matrix material, 8 parts of activated carbon nanotube, 8 parts of toughening agent, 4 parts of polyethylene glycol terephthalate, 5 parts of nano metal powder, 0.7 part of antistatic agent, 0.2 part of antioxidant and 0.07 part of butyl titanate coupling agent.
The preparation method of the PSU carbon nanotube conductive master batch comprises the following steps:
1) selecting activated carbon nanotubes in parts by weight to perform circumferential array on a circular silk tube to obtain a fiber layer, then uniformly mixing the fiber layer with a toughening agent, stirring at a high speed, and finally putting the fiber layer into an organic solvent to perform ultrasonic dispersion to obtain a material A; the organic solvent is one of dimethylbenzene, cyclohexane or methyl acetate, and the rotating speed is 1500 r/min.
2) Heating a PSU polymer matrix material and polyethylene glycol terephthalate to a molten state, and then crushing the PSU polymer matrix material and the polyethylene glycol terephthalate into powdery particles at the temperature of minus 20 ℃ by taking Honeywell R407c as a refrigeration medium to obtain a material X;
3) mixing nano metal powder and an antistatic agent, placing the mixture into a container, forming an electromagnetic field outside the container, performing rotation treatment, adding an antioxidant and a butyl titanate coupling agent, stirring at a high speed for 40min, adding ethanol, oscillating for 3h by using ultrasonic waves, filtering, drying in vacuum, stirring the mixture, a material A and a material X at a low speed for 50min, and then cutting the mixture into particles through a double-screw extruder base to obtain the PSU carbon nanotube conductive master batch. The high-speed stirring speed is 1700r/min, and the low-speed stirring speed is 600 r/min.
Performance testing
The conductive mother pellets obtained in examples 1 to 4 and comparative example 1 were tested for elongation at break and resistivity, and the test results are recorded in table 1, specifically as shown in table 1:
| item | Example 1 | Example 2 | Example 3 | Comparative example |
| Resistivity (omega cm) | 9.45×104 | 9.51×104 | 9.47×104 | 1.32×107 |
| Elongation at break: (%） | 17 | 21 | 18 | 3 |
As is clear from Table 1, the resistivity in the present invention is 9.45X 104～9.51×104The conductive master batch has good conductive performance, does not generate agglomeration phenomenon, ensures that all raw materials have good compatibility, has the elongation at break of 17-21 percent, and improves the conductive performance and the elongation at break of the conductive master batch.
The above description is only for the specific embodiments of the present disclosure, but the scope of the embodiments of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes, substitutions or combinations within the technical scope of the embodiments of the present disclosure or under the concept of the embodiments of the present disclosure, and all of them should be covered by the scope of the embodiments of the present disclosure.
Claims (5)
1. The PSU carbon nanotube conductive master batch is characterized by comprising the following raw materials in parts by weight: 84-91 parts of PSU polymer base material, 4-8 parts of activated carbon nanotube, 5-8 parts of toughening agent, 3-4 parts of polyethylene terephthalate, 1-5 parts of nano metal powder, 0.5-0.7 part of antistatic agent, 0.1-0.2 part of antioxidant and 0.04-0.07 part of butyl titanate coupling agent.
2. The PSU carbon nanotube conductive masterbatch according to claim 1, which is characterized by comprising the following raw materials in parts by weight: 88 parts of PSU polymer matrix material, 6 parts of activated carbon nanotube, 7 parts of toughening agent, 3.5 parts of polyethylene terephthalate, 3 parts of nano metal powder, 0.6 part of antistatic agent, 0.15 part of antioxidant and 0.06 part of butyl titanate coupling agent.
3. The preparation method of the PSU carbon nanotube conductive masterbatch according to claim 1, characterized by comprising the following steps:
1) selecting activated carbon nanotubes in parts by weight to perform circumferential array on a circular silk tube to obtain a fiber layer, then uniformly mixing the fiber layer with a toughening agent, stirring at a high speed, and finally putting the fiber layer into an organic solvent to perform ultrasonic dispersion to obtain a material A;
2) heating a PSU polymer matrix material and polyethylene glycol terephthalate to a molten state, and then crushing the PSU polymer matrix material and the polyethylene glycol terephthalate into powdery particles at a temperature of between 40 ℃ below zero and 20 ℃ below zero by taking Honeywell R407c as a refrigeration medium to obtain a material X;
3) mixing nano metal powder and an antistatic agent, placing the mixture into a container, forming an electromagnetic field outside the container, performing rotation treatment, adding an antioxidant and a butyl titanate coupling agent, stirring at a high speed for 30-40 min, adding ethanol, oscillating for 2-3 h by using ultrasonic waves, filtering, performing vacuum drying, finally stirring the mixture with a material A and a material X at a low speed for 40-50 min, and then granulating through a double-screw extruder to obtain the PSU carbon nanotube conductive master batch.
4. The preparation method of the PSU carbon nanotube conductive masterbatch of claim 3, wherein the organic solvent in the step 1) is one of xylene, cyclohexane or methyl acetate, and the rotation speed is 1300-1500 r/min.
5. The preparation method of the PSU carbon nanotube conductive masterbatch according to claim 3, wherein the high-speed stirring speed in the step 3) is 1300-1700 r/min, and the low-speed stirring speed is 400-600 r/min.
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2021
- 2021-10-14 CN CN202111195488.4A patent/CN113861689A/en active Pending
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