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CN109280317B - Fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material and preparation method thereof - Google Patents

Fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material and preparation method thereof Download PDF

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CN109280317B
CN109280317B CN201710593390.1A CN201710593390A CN109280317B CN 109280317 B CN109280317 B CN 109280317B CN 201710593390 A CN201710593390 A CN 201710593390A CN 109280317 B CN109280317 B CN 109280317B
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styrene
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CN109280317A (en
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杨桂生
高军
李术
杨莺
何璟
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CHUZHOU GENIUS NEW MATERIALS CO LTD
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
    • C08J5/041—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with metal fibres
    • 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
    • C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • 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
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • 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
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/068—Ultra high molecular weight polyethylene

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
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  • Mechanical Engineering (AREA)
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Abstract

The invention belongs to the technical field of polymer composite materials, and particularly relates to a fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material with an electromagnetic shielding function and a preparation method thereof. The material is prepared from the following components in parts by weight: the ABS resin is selected from 45-61 parts of acrylonitrile-butadiene-styrene, 12-20 parts of polycarbonate, 2-10 parts of toughening agent, 5-30 parts of metal fiber, 2-10 parts of chemical treatment agent and 1-2 parts of processing aid which are produced by a bulk method, the granular and powdery materials are uniformly mixed, then fed into a double screw to be mixed and extruded, and cut into particles, then the prepared particles are fed into a single screw, and the metal fiber is added in a side feeding mode to be mixed, extruded and cut into particles. The material prepared by the method has large exposed area of fiber and low surface resistivity of the material, and can obtain excellent performance in the fields of antistatic, electromagnetic shielding and the like.

Description

Fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material and preparation method thereof
(I) technical field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a fiber-exposed metal fiber acrylonitrile-butadiene-styrene polycarbonate alloy material with an electromagnetic shielding function and a preparation method thereof.
(II) background of the invention
At present, the development of polymer composite materials with electromagnetic shielding, antistatic and other functionalities is relatively fast, and most of the existing technologies are realized by directly adding carbon fibers, metal fibers and the like to be blended with polymer materials, then extruding by using double screws, melting, extruding and granulating to form the conduction rate inside the composite materials.
The fiber with the conduction function is exposed on the surface of the product contacting with the electromagnetic wave, and directly contacts with the electromagnetic wave to form an effective and efficient conduction network. However, because the fiber and the base material polymer material have large density difference, obvious fiber shape difference and the like, the fiber and the base material polymer material have different flow speeds and different solidification speeds after being melted, the frozen material surface layer is the polymer plastic base material, most of the fiber exists in the workpiece, and only a few fibers are on the surface of the workpiece. The electromagnetic shielding and antistatic product has low surface resistance, influences on conductivity and has poor electromagnetic shielding effect. When in use, the surface of the product is extruded by a large pressure, so that the conductive fibers are contacted up and down to achieve the effect.
In the traditional mode, because the fibers emerge less on the surface of the product, the fibers in the product are mainly contacted with each other by pressure, once the fibers are distributed unevenly and aggregated in the product, an open circuit is formed, the electromagnetic shielding function of the composite material is lost, and product waste is caused.
Some historical experiences have the conditions of fiber exposure adjustment through a process, such as lower mold temperature, lower injection temperature and the like, but the conditions have the defects that the mold is difficult to keep the mold at the lower mold temperature all the time and stable production is realized, and the mold and the injection temperature are low, so that the internal stress of a product is overlarge, and the product is easy to crack.
The chinese patent application No. 201210248625.0 discloses an effective method for exposing fibers of a fiber reinforced injection-molded product, but is not perfect, for example, the fibers are exposed more by performing secondary processing after injection molding of the product, which undoubtedly reduces the production efficiency and increases the product cost.
Disclosure of the invention
In order to solve the technical defects, the invention aims to provide a fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material and a preparation method thereof. The material can enable more conductive fibers and larger area to be directly exposed on the surface of a product, and saves the secondary processing procedure, thereby not only improving the conductivity of the material, but also improving the production efficiency, improving the qualification rate of the product and finally reducing the production cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material which is prepared from the following components in parts by weight:
acrylonitrile-butadiene-styrene resin: 45 to 61 portions of the mixture of the components,
polycarbonate (C): 12 to 20 portions of the (B) component,
a toughening agent: 2 to 10 portions of the components are added,
metal fibers: 5 to 30 portions of the raw materials are added,
chemical treatment agent: 2 to 10 portions of the components are added,
processing aid: 1-2 parts.
The acrylonitrile-butadiene-styrene resin is selected from one or a mixture of more of acrylonitrile-butadiene-styrene graft copolymer, acrylonitrile-ethylene propylene elastomer-styrene graft copolymer, acrylonitrile-styrene-acrylic acid terpolymer and methyl methacrylate-butadiene-styrene graft copolymer, has a melt index of 2-10 g/10min at 200 ℃ and under a load test condition of 10 kg, and can be obtained by a bulk method.
The polycarbonate is selected from polycarbonate with molecular weight of 30000-45000 and melt index of 1-5 g/10min under the test conditions of 300 ℃ and 1.2 kg load.
The toughening agent is selected from one or a mixture of more of a series of impact modifiers with a core-shell structure, styrene impact modifiers, thermoplastic elastomers and silicone rubber.
The metal fiber is stainless steel fiber with the diameter of 10 um-150 um.
The chemical treatment agent is ultrahigh molecular weight thermoplastic resin with molecular weight more than 150 ten thousand, such as ultrahigh molecular weight polyethylene UHMWPE and the like.
The processing aid is selected from a mixture of a heat stabilizer and a lubricant, wherein the heat stabilizer is selected from one or more of a hindered phenol heat stabilizer, a thioester heat stabilizer and a phosphite heat stabilizer, and the lubricant is selected from one or more of solid paraffin, liquid paraffin, low molecular weight polyethylene, stearic acid amide, methylene bis-stearic acid amide and ethylene bis-stearic acid amide.
The invention also provides a preparation method of the fiber exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material, which comprises the following steps:
uniformly mixing 45-61 parts of acrylonitrile-butadiene-styrene, 12-20 parts of polycarbonate, 2-10 parts of toughening agent, 2-10 parts of chemical treatment agent and 1-2 parts of processing aid, feeding the mixture into a double-screw extruder, fully melting and compounding the materials under the conveying and shearing action of a screw, extruding the materials by a machine head, bracing, cooling and granulating; the screw temperature of a first area of the double-screw extruder is 200-220 ℃; the temperature of the screw from the second area to the machine head is 220-260 ℃; the rotating speed of the screw is 100-500 r/min;
then feeding the prepared particles into a single-screw extruder, simultaneously adding 5-30 parts of metal fibers from a position close to one third of the extruder head in a side feeding mode, and extruding, bracing, cooling and granulating the mixture; the screw temperature of the first area of the single screw extruder is 200-220 ℃; the temperature of the screw from the second area to the machine head is 220-250 ℃, and the temperature of the screw at the side feeding port is 240-250 ℃; the rotating speed of the screw is 100-400 r/min.
Compared with the prior art, the method has the following advantages:
1. the accurate technical route for preparing the acrylonitrile-butadiene-styrene resin, the polycarbonate, the metal fiber and the preparation method in the fiber exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material is determined.
2. Through the use of the chemical treatment agent, the technical aim of improving the fiber exposure is achieved.
3. By adopting the technical invention of mixing materials by using a single screw rod in the material preparation stage, the final fiber is exposed out of the outer surface of the product, the unstable production state caused by continuous process adjustment in the product processing stage is saved, the stable fiber exposed product is realized, and the product percent of pass is increased.
4. The invention of the technology in the material preparation stage enables more and larger area of the fiber to be directly exposed on the outer surface of the product, and the defects of low production efficiency caused by exposing the fiber by a secondary processing method at the later stage are eliminated.
(IV) detailed description of the preferred embodiments
The present invention is further illustrated by the following specific examples.
The raw materials used in the following examples were:
acrylonitrile-butadiene-styrene resin (ABS) is PA-709 and 750A of Daqing petrochemical, qimei, taiwan, china.
Polycarbonate (PC) was 1600-03 for LG and PC1225Z100 for Teijin.
The toughening agent is a Brillouin MBS core-shell type toughening agent with the mark of M511.
The metal fiber is stainless steel fiber with the diameter of 50um produced by Ganzhou major industry metal fiber Co.
The chemical treating agent is M2 brand UHMWPE produced by Beijing assistant II factory.
The heat stabilizer in the processing aid is hindered phenol (AO-50 in Changchun chemical industry) and phosphite ester (2112 in Changchun chemical industry) (weight ratio AO-50: 2112=1, 2), and the lubricant is domestic EBS and is sold in the market.
The physical property test standard of the fiber exposed type metal fiber acrylonitrile-butadiene-styrene polycarbonate alloy material provided by the embodiment of the invention is shown in the table 1.
TABLE 1 test standards for physical Properties of materials
Physical Properties Test method
Exposed surface area ratio of fiber
Surface resistivity IEC 60093
Example 1
Uniformly mixing 45 parts of Qimei PA-709, 12 parts of 1600-03,2 parts of M511, 10 parts of UHMWPE and 1 part of processing aid (0.6 part of heat stabilizer and 0.4 part of lubricant) by a high-speed stirrer, feeding the mixture into a double-screw extruder, fully melting and mixing under the conveying and shearing action of a screw, extruding through a die of a machine head, drawing strips, cooling and granulating.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 30 parts of stainless steel fibers from a position which is one third of the distance from the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The screw temperature of a first zone of the single screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, and the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the results of the performance tests are shown in table 2.
Comparative example 1
Uniformly mixing 45 parts of Qimei PA-709, 12 parts of 1600-03,2 parts of M511, 10 parts of UHMWPE and 1 part of processing aid (0.6 part of heat stabilizer and 0.4 part of lubricant) by a high-speed mixer, feeding the mixture into a double-screw extruder, simultaneously adding 30 parts of stainless steel fibers from a side feeding port, fully melting and mixing under the conveying and shearing action of a screw, extruding through a head die, drawing into strips, cooling and granulating.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
Comparative example 2
55 parts of Qimei PA-709, 12 parts of 1600-03,2 parts of M511 and 1 part of processing aid (0.6 part of heat stabilizer and 0.4 part of lubricant) are mixed uniformly by a high-speed stirrer, the mixture is fed into a double-screw extruder, is fully melted and mixed under the conveying and shearing action of a screw, and is extruded, pulled into strips, cooled and cut into granules by a die of a machine head.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 30 parts of stainless steel fibers from a position which is close to one third of the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The temperature of a screw in the first zone of the single-screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, wherein the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
Example 2
Mixing 55 parts of Qimei PA-709, 18 parts of 1600-03,5 parts of M511,5 parts of UHMWPE and 2 parts of processing aid (0.6 part of heat stabilizer and 0.4 part of lubricant) uniformly by a high-speed mixer, feeding the mixture into a double-screw extruder, fully melting and mixing under the conveying and shearing action of a screw, extruding by a die of a machine head, drawing strips, cooling and granulating.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 15 parts of stainless steel fibers from a position which is close to one third of the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The screw temperature of a first zone of the single screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, wherein the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
Comparative example 3
Mixing 55 parts of Daqing 750, 18 parts of 1600-03 parts of M511,5 parts of UHMWPE and 2 parts of processing aid (1.2 parts of heat stabilizer and 0.8 part of lubricant) uniformly by a high-speed stirrer, feeding the mixture into a double-screw extruder, fully melting and mixing under the conveying and shearing action of screws, extruding through a die of a machine head, drawing strips, cooling and granulating.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 15 parts of stainless steel fibers from a position which is close to one third of the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The screw temperature of a first zone of the single screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, wherein the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
Comparative example 4
Mixing 55 parts of Qimei PA-709, 18 parts of PC1225Z100,5 parts of M511,5 parts of UHMWPE and 2 parts of processing aid (1.2 parts of heat stabilizer and 0.8 part of lubricant) uniformly by a high-speed stirrer, feeding the mixture into a double-screw extruder, fully melting and mixing under the conveying and shearing action of a screw, extruding by a die of a machine head, drawing strips, cooling and granulating.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 15 parts of stainless steel fibers from a position which is close to one third of the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The temperature of a screw in the first zone of the single-screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, and the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
Example 3
61 parts of Qimei PA-709, 20 parts of 1600-03, 10 parts of M511,2 parts of UHMWPE and 2 parts of processing aid (1.2 parts of heat stabilizer and 0.8 part of lubricant) are uniformly mixed by a high-speed mixer, the mixture is fed into a double-screw extruder, fully melted and mixed under the conveying and shearing action of a screw, and then extruded by a die of a machine head, pulled into strips, cooled and cut into granules.
The temperature of the first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of the screws from the second zone to each section of the extruder head is controlled between 220 and 240 ℃, and the rotating speed of the screws is 350r/min.
And then feeding the particles manufactured by the double screws into a single screw extruder, simultaneously adding 5 parts of stainless steel fibers from a position which is one third of the distance from the extruder head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture.
The screw temperature of a first zone of the single screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, wherein the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
The prepared material was injection molded into standard square plaques with dimensions of 60mm by 2.5mm, and the performance test results are shown in table 2.
TABLE 2 test results of material properties
Figure BDA0001355204600000061
The fiber exposure type metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material prepared by the embodiment has obviously improved fiber exposure and surface resistivity. As shown in Table 2, the fiber exposure and the surface resistivity of the material of the invention using the new processing method (single screw processing of fibers) are significantly improved; the invention uses the newly added chemical treatment agent to obviously improve the fiber exposure and the surface resistivity of the material; the invention uses newly-explored acrylonitrile-butadiene-styrene resin and polycarbonate type to obviously improve the fiber exposure and the surface resistivity of the material compared with the material prepared by the conventional material.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (3)

1. A preparation method of a fiber exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material is characterized by comprising the following steps: according to the weight portion, 45 portions of Qimei PA-709, 12 portions of 1600-03,2 portions of M511 and 10 portions of M2 brand UHMWPE and 1 portion of processing aid are uniformly mixed by a high-speed mixer, the mixture is sent into a double-screw extruder, and is fully melted and mixed under the conveying and shearing action of a screw, and then is extruded, pulled into strips, cooled and cut into granules by a die of a machine head, wherein the temperature of a first zone of the double-screw extruder is controlled between 200 and 220 ℃, the temperature of each section of the screw from a second zone to the machine head is controlled between 220 and 240 ℃, and the rotating speed of the screw is 350r/min; the processing aid consists of 0.6 part of heat stabilizer and 0.4 part of lubricant EBS, wherein the heat stabilizer comprises the following components in parts by weight of 1:2 AO-50 and 2112;
feeding the particles manufactured by double screws into a single screw extruder, simultaneously adding 30 parts of stainless steel fibers with the diameter of 50 mu m from a position close to one third of a machine head in a side feeding mode, and extruding, drawing strips, cooling and granulating the mixture, wherein the temperature of a screw in a first area of the single screw extruder is 210 ℃; the temperature of the screw from the second area to the machine head is 220-240 ℃, and the temperature of the screw at the side feeding port is 245 ℃; the screw rotation speed is 300r/min.
2. The fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material is prepared by the preparation method of claim 1.
3. The fiber-exposed metal fiber acrylonitrile-butadiene-styrene/polycarbonate alloy material of claim 2, wherein the fiber exposed surface area ratio is 98%, and the surface resistivity is 0.012 Ω.
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