CN112341747A - Carbon nanotube modified permanent antistatic ABS material and preparation method thereof - Google Patents
Carbon nanotube modified permanent antistatic ABS material and preparation method thereof Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 81
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 81
- 239000000463 material Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 51
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 229920005672 polyolefin resin Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000002109 single walled nanotube Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 5
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002861 polymer material Substances 0.000 abstract description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- 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
Abstract
The invention discloses a carbon nanotube modified permanent antistatic ABS material and a preparation method thereof, belonging to the field of high polymer materials. A carbon nanotube modified permanent antistatic ABS material comprises the following components in percentage by mass: 95-98% of ABS resin, 1-3% of carbon nanotube master batch, 0.5-2% of compatilizer, 0.2-1% of antioxidant and 0.2-1% of lubricant. And discloses a preparation method. According to the invention, the carbon nanotube master batch is prepared by the low-polarity resin, and then the ABS resin and the carbon nanotube master batch are blended and extruded, so that the carbon nanotube exists in the low-polarity component, the structure of the carbon nanotube is kept complete, the actual addition amount of the carbon nanotube is reduced to be within 1%, the antistatic effect can be achieved, and meanwhile, the mechanical property and the processing property of the material are good.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a carbon nanotube modified permanent antistatic ABS material and a preparation method thereof.
Background
The ABS resin is a high polymer material which has high impact, high rigidity, low temperature resistance and easy processing and forming, has good glossiness and chemical resistance, and is widely applied to industries such as household appliances, electronic appliances, automobiles and the like. However, ABS resin is an insulating material and may be dangerous due to static electricity accumulated during use, thereby limiting the use of ABS resin.
At present, the antistatic modification method of the ABS resin mainly comprises the following methods: 1. adding surfactant or conductive polymer. Surfactants generally produce only a transient antistatic effect; however, the conductive polymer is generally added in a large amount, and has a large influence on the physical properties of the material. 2. Conductive fillers are added. Such as carbon black, carbon fiber, carbon nanotube, etc., carbon black and carbon fiber are generally added in a large amount, resulting in deterioration of toughness of the material.
Chinese patent CN 110615953A discloses an antistatic ABS composite material and a preparation method thereof, the invention introduces ionic liquid as a compatilizer of ABS resin and carbon nano tube, and the surface resistance of the material reaches 10 by adding 2-5 parts of carbon nano tube antistatic agent5Omega, the impact of the material is reduced to some extent by adding a large amount of carbon nanotubes.
Chinese patent CN102268171A discloses a novel antistaticThe invention relates to an electric resin material and a preparation method thereof, wherein the surface resistance of the material reaches 10 through the synergistic effect of carbon black, carbon nano tubes and polyaniline5Omega is even lower, but the antistatic agent has a plurality of types and higher total addition amount, which causes larger loss of mechanical properties of the material.
When the addition amount of the carbon nano tubes is within 1 percent, the physical properties of the ABS resin are basically not influenced, and the ABS resin has a permanent antistatic effect, so that the structure of the carbon nano tubes needs to be ensured not to be damaged, and meanwhile, the carbon nano tubes are in certain contact with each other, thereby forming a conductive path; when the pretreated carbon nano tubes are directly blended with ABS resin for extrusion and granulation, the ABS resin has certain polarity, so that the shearing generated by a screw is strong, the structure of the carbon nano tubes is easily damaged, and meanwhile, the dispersed carbon nano tubes are difficult to contact with each other due to the low addition of the carbon nano tubes. The invention focuses on the point, the carbon nanotube master batch is prepared by blending and extruding the pretreated carbon nanotube and the low-polarity resin, then the carbon nanotube master batch and the ABS resin are extruded and blended by utilizing partial incompatibility of the low-polarity resin and the ABS resin, the carbon nanotube is coated in the low-polarity resin and uniformly dispersed in the ABS resin, and the antistatic ABS with complete carbon nanotube structure and good contact is formed, and meanwhile, the overall physical property of the ABS resin is basically kept unchanged.
Disclosure of Invention
The invention aims to provide a carbon nanotube modified permanent antistatic ABS material and a preparation method thereof, which can effectively reduce the addition of carbon nanotubes, reduce the cost of the material and simultaneously reduce the loss of the mechanical property and the processability of ABS resin.
In order to achieve the purpose, the invention adopts the following technical scheme:
a carbon nanotube modified permanent antistatic ABS material comprises the following components in percentage by mass:
95 to 98 percent of ABS resin
1 to 3 percent of carbon nano tube master batch
0.5 to 2 percent of compatilizer
0.2 to 1 percent of antioxidant
0.2 to 1 percent of lubricant.
According to a further technical scheme, the carbon nanotube master batch comprises the following components in percentage by mass:
74 to 84 percent of low-polarity resin
15 to 25 percent of carbon nano tube
0.2 to 1 percent of dispersant
0.2 to 1 percent of antioxidant.
In a further technical scheme, the low-polarity resin is one of polyolefin resins and is one of PP or PE.
In a further technical scheme, the carbon nano tube is a high-content single-wall carbon nano tube pre-dispersion body, the content of the carbon nano tube is more than 80%, the outer diameter of the carbon nano tube is 1.6 +/-0.4 nm, and the length of the carbon nano tube is more than 5 nm.
In a further technical scheme, the dispersant is DP 310;
the antioxidant is prepared from 1010 and 168 mass ratios of 1: 1.
The further technical scheme is that the preparation method of the carbon nano tube master batch is characterized in that low-polarity resin, the carbon nano tube, the dispersing agent and the antioxidant are mixed in proportion and then extruded and granulated through a double-screw extruder, wherein the length-diameter ratio of a screw is 48: 1; the double-screw extruder comprises the following processes: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 170 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 190 ℃, the sixth zone is 180 ℃, the seventh zone is 180 ℃, the eighth zone is 180 ℃, the ninth zone is 180 ℃, the tenth zone is 180 ℃, the eleventh zone is 185 ℃, the twelfth zone is 185 ℃ and the head temperature is 190 ℃.
The further technical proposal is that the melt flow rate of the ABS resin is 15-25g/10min (200 ℃, 10kg), and the notched impact strength of the cantilever beam is 15-25KJ/m2。
In a further technical scheme, the compatilizer is POE-g-MAH;
the antioxidant is prepared from 1076 and 168 according to the mass ratio of 1: 1;
the lubricant is one of EBS, PETS and silicone master batch.
A preparation method of a carbon nanotube modified permanent antistatic ABS material comprises the following steps:
the method comprises the following steps: preparing carbon nano tube master batch, blending 74-84% of low-polarity resin, 15-25% of carbon nano tube, 0.2-1% of dispersing agent and 0.2-1% of antioxidant according to a proportion, and then extruding and granulating by a double-screw extruder to obtain the carbon nano tube master batch, wherein the long diameter of a screw is 48: 1;
step two: adding 95-98% of ABS resin, 1-3% of carbon nanotube master batch, 0.5-2% of compatilizer, 0.2-1% of antioxidant and 0.2-1% of lubricant into a high-speed mixer in proportion, uniformly mixing, and feeding into a screw through a double-screw extruder feeding system, wherein the length diameter of the screw is 40: 1; step one and step two are both extruded with twin screws, but the twin screws are somewhat different in structure, step one uses a die having a length to diameter ratio of 48: 1, step two uses a screw with a length-diameter ratio of 40: 1 screw.
In a further technical scheme, the process of the twin-screw extruder in the step one is as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the temperature of the first zone is 100 ℃, the temperature of the second zone is 170 ℃, the temperature of the third zone is 180 ℃, the temperature of the fourth zone is 190 ℃, the temperature of the fifth zone is 190 ℃, the temperature of the sixth zone is 180 ℃, the temperature of the seventh zone is 180 ℃, the temperature of the eighth zone is 180 ℃, the temperature of the ninth zone is 180 ℃, the temperature of the tenth zone is 180 ℃, the temperature of the eleventh zone is 185 ℃, the temperature of;
the technological parameters of the twin-screw extruder in the second step are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
Advantageous effects
Compared with the prior art, the invention has the following remarkable advantages:
1. the invention prepares a permanent antistatic ABS material modified by carbon nano tubes, and the material has a permanent antistatic effect.
2. According to the invention, the carbon nanotube master batch is prepared by the low-polarity resin, and then the ABS resin and the carbon nanotube master batch are blended and extruded, so that the carbon nanotube exists in the low-polarity component, the structure of the carbon nanotube is kept complete, the actual addition amount of the carbon nanotube is reduced to be within 1%, the antistatic effect can be achieved, and meanwhile, the mechanical property and the processing property of the material are good.
3. The carbon nano tube has low addition amount, low corresponding material cost and high physical property retention rate, and compared with the manufacturing process in the prior art, the preparation method is simpler and the product quality is high.
Detailed Description
The present invention will be described in further detail with reference to examples.
The preparation method of the carbon nanotube master batch in the following examples 1 to 3 is as follows:
preparing the carbon nano tube master batch: adding 79% of low-polarity LDPE resin, 20% of carbon nano tube, 0.5% of dispersant DP310, 0.25% of antioxidant 1010 and 0.25% of antioxidant 168 into a high-speed stirrer, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating for later use. Wherein the technological parameters of the extruder are as follows: the rotating speed of the screw is 400r/min, and the temperature of each zone is as follows:
the temperature of the first zone is 100 ℃, the temperature of the second zone is 170 ℃, the temperature of the third zone is 180 ℃, the temperature of the fourth zone is 190 ℃, the temperature of the fifth zone is 190 ℃, the temperature of the sixth zone is 180 ℃, the temperature of the seventh zone is 180 ℃, the temperature of the eighth zone is 180 ℃, the temperature of the ninth zone is 180 ℃, the temperature of the tenth zone is 180 ℃, the temperature of the eleventh zone is 185 ℃, the temperature of;
example 1
Adding 97.7% of ABS resin PA-757, 1% of carbon nanotube master batch, 0.5% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed mixer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
Example 2
Adding 96.7% of ABS resin PA-757, 2% of carbon nanotube master batch, 0.5% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed mixer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
Example 3
Adding 95.2% of ABS resin PA-757, 3% of carbon nanotube master batch, 1% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed stirrer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
The products of examples 1 to 3 were produced by means of an injection molding machine as test specimens with the following results:
| item | ABS material (PA-757) | Example 1 | Example 2 | Example 3 |
| Melt flow rate g/10min | 18 | 17.5 | 17.1 | 16.0 |
| Tensile strength MPa | 44 | 42.7 | 41.2 | 39.8 |
| Notched impact strength KJ/m of cantilever beam2 | 21 | 20.1 | 18.6 | 17.7 |
| Surface resistance omega | 1016 | 107-108 | 105-107 | 105-107 |
Note: the test conditions for the melt flow rate were 200 ℃ and 10 kg.
The preparation method of the carbon nanotube master batch in the following examples 4 to 6 is as follows:
preparing the carbon nano tube master batch: adding 79% of low-polarity PP resin, 20% of carbon nano tube, 0.5% of dispersing agent DP310, 0.25% of antioxidant 1010 and 0.25% of antioxidant 168 into a high-speed stirrer, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating for later use. Wherein the technological parameters of the extruder are as follows: the rotating speed of the screw is 400r/min, and the temperature of each zone is as follows:
the temperature of the first zone is 100 ℃, the temperature of the second zone is 170 ℃, the temperature of the third zone is 180 ℃, the temperature of the fourth zone is 190 ℃, the temperature of the fifth zone is 190 ℃, the temperature of the sixth zone is 180 ℃, the temperature of the seventh zone is 180 ℃, the temperature of the eighth zone is 180 ℃, the temperature of the ninth zone is 180 ℃, the temperature of the tenth zone is 180 ℃, the temperature of the eleventh zone is 185 ℃, the temperature of;
example 4
Adding 97.7% of ABS resin PA-757, 1% of carbon nanotube master batch, 0.5% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed mixer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
Example 5
Adding 96.7% of ABS resin PA-757, 2% of carbon nanotube master batch, 0.5% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed mixer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
Example 6
Adding 95.2% of ABS resin PA-757, 3% of carbon nanotube master batch, 1% of compatilizer POE-g-MAH, 0.2% of antioxidant 1076, 0.2% of antioxidant 168 and 0.4% of lubricant EBS into a high-speed stirrer in proportion, uniformly mixing, feeding into a screw through a double-screw extruder feeding system, and extruding and granulating. The process parameters of the extruder are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
The products of examples 4 to 6 were produced by means of an injection molding machine as test specimens with the following results:
| item | ABS material (PA-757) | Example 4 | Example 5 | Example 6 |
| Melt flow rate g/10min | 18 | 17.4 | 16.1 | 15.2 |
| Tensile strength MPa | 44 | 43.3 | 40.4 | 39.2 |
| Notched impact strength KJ/m of cantilever beam2 | 21 | 19.5 | 17.3 | 16.4 |
| Surface resistance omega | 1016 | 107-108 | 105-107 | 105-107 |
Note: the test conditions for the melt flow rate were 200 ℃ and 10 kg.
According to the embodiment, after the carbon nanotube master batch is added to 1%, the surface resistance of the material can reach the antistatic level, and the mechanical property and the processing property of the material are basically kept good.
Claims (11)
1. A carbon nanotube modified permanent antistatic ABS material is characterized by comprising the following components in percentage by mass:
2. the carbon nanotube modified permanent antistatic ABS material of claim 1, wherein the carbon nanotube master batch comprises the following components by mass percent:
3. the carbon nanotube-modified permanent antistatic ABS material of claim 2, wherein the low polarity resin is one of polyolefin resins.
4. The carbon nanotube modified permanent antistatic ABS material of claim 3, wherein the low polarity resin is one of PP or PE.
5. The carbon nanotube-modified permanent antistatic ABS material of claim 2, wherein the carbon nanotubes are single-walled carbon nanotube pre-dispersion, the content of the carbon nanotubes is more than 80%, the outer diameter of the carbon nanotubes is 1.6 +/-0.4 nm, and the length of the carbon nanotubes is more than 5 nm.
6. The carbon nanotube-modified permanent antistatic ABS material according to claim 2, wherein the dispersant is DP 310;
the antioxidant is characterized in that the mass ratio of the antioxidant 1010 to the antioxidant 168 is 1: 1.
7. The carbon nanotube modified permanent antistatic ABS material according to any of claims 2-6, wherein the carbon nanotube master batch is prepared by blending low-polarity resin, carbon nanotubes, a dispersing agent and an antioxidant in proportion, and then extruding and granulating the mixture by a double-screw extruder, wherein the length-diameter ratio of a screw is 48: 1; the double-screw extruder comprises the following processes: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 170 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 190 ℃, the sixth zone is 180 ℃, the seventh zone is 180 ℃, the eighth zone is 180 ℃, the ninth zone is 180 ℃, the tenth zone is 180 ℃, the eleventh zone is 185 ℃, the twelfth zone is 185 ℃ and the head temperature is 190 ℃.
8. The carbon nanotube-modified permanent antistatic ABS material according to claim 1,
the melt flow rate of the ABS resin is 15-25g/10min (200 ℃, 10kg), and the notched impact strength of a cantilever beam is 15-25KJ/m2。
9. The carbon nanotube-modified permanent antistatic ABS material according to claim 1,
the compatilizer is POE-g-MAH;
the antioxidant is prepared from 1076 and 168 according to the mass ratio of 1: 1;
the lubricant is one of EBS, PETS and silicone master batch.
10. A preparation method of a carbon nanotube modified permanent antistatic ABS material is characterized by comprising the following steps:
the method comprises the following steps: preparing carbon nanotube master batch, blending 74-84% of low-polarity resin, 15-25% of carbon nanotube, 0.2-1% of dispersing agent and 0.2-1% of antioxidant according to a proportion, and then extruding and granulating by a double-screw extruder to obtain the carbon nanotube master batch, wherein the length-diameter ratio of a screw is 48: 1.
step two: adding 95-98% of ABS resin, 1-3% of carbon nanotube master batch, 0.5-2% of compatilizer, 0.2-1% of antioxidant and 0.2-1% of lubricant into a high-speed stirrer according to a proportion, uniformly mixing, and feeding into a screw through a double-screw extruder feeding system, wherein the length-diameter ratio of the screw is 40: 1.
11. the method for preparing the carbon nanotube modified permanent antistatic ABS material as claimed in claim 9, wherein the twin-screw extruder process in the step one is as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 170 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 190 ℃, the sixth zone is 180 ℃, the seventh zone is 180 ℃, the eighth zone is 180 ℃, the ninth zone is 180 ℃, the tenth zone is 180 ℃, the eleventh zone is 185 ℃, the twelfth zone is 185 ℃ and the head temperature is 190 ℃.
The technological parameters of the twin-screw extruder in the second step are as follows: the rotating speed of the screw is 400-600r/min, and the temperature of each zone is as follows: the first zone is 100 ℃, the second zone is 200 ℃, the third zone is 210 ℃, the fourth zone is 220 ℃, the fifth zone is 220 ℃, the sixth zone is 210 ℃, the seventh zone is 210 ℃, the eighth zone is 210 ℃, the ninth zone is 200 ℃, the tenth zone is 210 ℃, and the head temperature is 220 ℃.
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