CN110669296A - Carbon nano material reinforced polystyrene and preparation method and application thereof - Google Patents
Carbon nano material reinforced polystyrene and preparation method and application thereof Download PDFInfo
- Publication number
- CN110669296A CN110669296A CN201910935420.1A CN201910935420A CN110669296A CN 110669296 A CN110669296 A CN 110669296A CN 201910935420 A CN201910935420 A CN 201910935420A CN 110669296 A CN110669296 A CN 110669296A
- Authority
- CN
- China
- Prior art keywords
- polystyrene
- carbon nano
- reinforced polystyrene
- carbon
- 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
Images
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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/005—Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
-
- 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
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two 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
- C08J2325/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- 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
- C08J2425/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- 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
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/016—Additives defined by their aspect ratio
-
- 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
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a carbon nano-material reinforced polystyrene and a preparation method and application thereof, wherein the carbon nano-material reinforced polystyrene comprises the following components: 60-85 parts by weight of polystyrene; 1-7 parts by weight of carbon nano conductive filler; 5-15 parts by weight of a filler coating agent; 0.5-8 parts by weight of a modifier; 0.2-1.5 parts by weight of auxiliary agent. The carbon nano material reinforced polystyrene has excellent conductivity, lower resistivity, higher tensile strength, impact strength and elongation at break.
Description
Technical Field
The invention belongs to the field of electronic component mounting, and particularly relates to carbon nano material reinforced polystyrene as well as a preparation method and application thereof.
Background
The carrier tape is mainly applied to the Surface Mount Technology (SMT) of electronic components, and in the process of storing and transporting various static sensitive components, the problems of material damage, poor processing procedure and the like can occur due to the action of static electricity and electromagnetic radiation, so that huge loss can be caused. In the three-layer coextrusion carrier tape, two layers on the surface are used as conductive layer materials, and the materials are required to have excellent conductivity, so that the antistatic performance and the impact resistance of the carrier tape are particularly critical.
The traditional carbon black particles are taken as conductive fillers in the market, and a large amount of carbon black fillers are added to meet the conductive performance of the product, so that the mechanical property of the product is seriously damaged. Meanwhile, the high-carbon-content carbon black has higher requirements on the dispersion performance of products, and in the processing process, the high-carbon-content carbon black is easy to carbonize at the die orifice of an extruder, so that the production and processing are influenced, and the problems that the surface carbon black is easy to fall off and the like exist. Therefore, while ensuring the conductivity and mechanical properties of the product, the technical difficulties are to find conductive fillers with more excellent comprehensive use performance as substitutes and to solve the problems of processing performance and dispersion of the product.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a carbon nano-material reinforced polystyrene and a preparation method and application thereof. The carbon nano material reinforced polystyrene has excellent conductivity, lower resistivity, higher tensile strength, impact strength and elongation at break.
In one aspect of the present invention, the present invention provides a carbon nanomaterial-reinforced polystyrene, which, according to an embodiment of the present invention, includes:
60-85 parts by weight of polystyrene;
1-7 parts by weight of carbon nano conductive filler;
5-15 parts by weight of a filler coating agent;
0.5-8 parts by weight of a modifier;
0.2-1.5 parts by weight of auxiliary agent.
According to the carbon nano material reinforced polystyrene disclosed by the embodiment of the invention, a small amount of carbon nano conductive filler is added, and the filler coating agent is added, so that the surface of the carbon nano conductive filler is coated with the filler coating agent, the carbon nano conductive filler is favorably and uniformly dispersed in the polystyrene, and the carbon nano material reinforced polystyrene can have a stable conductive network structure and endow the composite material with an excellent conductive function. Meanwhile, by adding a small amount of carbon nano conductive filler, the resistivity of the obtained carbon nano material reinforced polystyrene is not too good, and the requirements of subsequent products can still be met. And the well-dispersed carbon nano material also has excellent reinforcing effect, can obviously improve the tensile strength, the impact strength and the elongation at break of the polystyrene, and realizes the good balance of the comprehensive mechanical properties of the composite material.
In addition, the carbon nanomaterial reinforced polystyrene according to the above embodiment of the present invention may also have the following additional technical features:
in some embodiments of the present invention, the carbon nano conductive filler is at least one selected from graphite, graphene, carbon nanotube, conductive carbon black. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the invention, the graphene has a sheet diameter of 2-20 μm and a thickness of no more than 5 nm. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the invention, the carbon nanotubes have a diameter of 1 to 10nm and an aspect ratio of not less than 2000. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the invention, the conductive carbon black has a particle size of no greater than 30 nm. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the present invention, the filler coating agent is at least one selected from the group consisting of liquid paraffin oil and zinc stearate. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the invention, the modifier is at least one selected from the group consisting of ethylene propylene diene monomer, butadiene rubber, isobutylene rubber, nitrile rubber, ethylene-butyl acrylate-glycidyl methacrylate copolymer, ethylene-methyl acrylate-glycidyl methacrylate copolymer, styrene-butadiene thermoplastic elastomer, hydrogenated styrene-butadiene block copolymer, chlorinated polyethylene, acrylonitrile-butadiene-styrene copolymer, methyl acrylate-butadiene-styrene copolymer. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In some embodiments of the present invention, the auxiliary agent is at least one selected from the group consisting of honeywell AC6, honeywell C5, honeywell B6, titanate coupling agent 201, silane coupling agent 550, KT15, KT 25. Therefore, the comprehensive performance of the carbon nano material reinforced polystyrene can be further improved.
In still another aspect of the present invention, the present invention provides a method for preparing the above carbon nanomaterial-reinforced polystyrene, the method comprising, according to an embodiment of the present invention: mixing polystyrene with carbon nano conductive filler, filler coating agent, modifier and auxiliary agent in sequence, and performing primary extrusion granulation, drying and secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene. According to the method for preparing the carbon nano material reinforced polystyrene, disclosed by the embodiment of the invention, a small amount of the carbon nano conductive filler is added, and the filler coating agent is added, so that the filler coating agent is coated on the surface of the carbon nano conductive filler, and the carbon nano conductive filler is favorably and uniformly dispersed in the polystyrene, so that the carbon nano material reinforced polystyrene can have a stable conductive network structure, and an excellent conductive function is endowed to a composite material. Meanwhile, by adding a small amount of carbon nano conductive filler, the resistivity of the obtained carbon nano material reinforced polystyrene is not too good, and the requirements of subsequent products can still be met. And the well-dispersed carbon nano material also has excellent reinforcing effect, can obviously improve the tensile strength, the impact strength and the elongation at break of the polystyrene, and realizes the good balance of the comprehensive mechanical properties of the composite material. Furthermore, by adopting the melt extrusion mode for granulation, the carbon nano material reinforced polystyrene has more excellent conductivity, the dispersibility and the mechanical property of the carbon nano conductive filler in the polystyrene can be improved, and the point resistance is uniform.
In some embodiments of the present invention, the method for preparing carbon nanomaterial-reinforced polystyrene comprises: mixing and stirring a part of the polystyrene, the carbon nano conductive filler and the filler coating agent for the first time; carrying out second mixing stirring on the material obtained by the first mixing stirring, the modifier and the auxiliary agent; and performing the primary extrusion granulation on the material obtained by the second mixing and stirring, drying the obtained master batch, mixing the dried master batch with the other part of the polystyrene, and performing the secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the invention, the first mixing agitation and the second mixing agitation are both performed in a high speed blender. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the present invention, the first mixing and stirring step is performed at a rotation speed of 600-. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the present invention, the second mixing and stirring is performed at a rotation speed of 1200-1400r/min for 1-5 min. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the invention, the first extrusion granulation and the second extrusion granulation are both performed in a flat twin extruder. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the invention, the mass ratio of one portion of the polystyrene to another portion of the polystyrene is from 4 to 6: 6-4. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the present invention, the method for preparing carbon nanomaterial-reinforced polystyrene comprises: feeding a part of the polystyrene, the carbon nano conductive filler, the filler coating agent, the modifier and the auxiliary agent into an internal mixer for mixing and banburying, and performing the primary extrusion granulation; and drying the master batch obtained by the primary extrusion granulation, mixing the master batch with the other part of the polystyrene, and performing the secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the invention, the primary extrusion pelletization is performed in a single screw extruder and the secondary extrusion pelletization is performed in a flat twin extruder. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In some embodiments of the invention, the mass ratio of the portion of polystyrene to the remaining portion of polystyrene is 4-6: 6-4. Therefore, the comprehensive performance of the carbon nano conductive filler can be further improved.
In another aspect of the present invention, the present invention provides an electronic carrier tape, wherein the electronic carrier tape comprises the above-mentioned carbon nanomaterial-reinforced polystyrene or the carbon nanomaterial-reinforced polystyrene prepared by the above-mentioned method for preparing carbon nanomaterial-reinforced polystyrene. Therefore, the electronic carrier tape has uniform point resistance, good conductivity and mechanical properties, excellent surface flatness and dimensional stability of the carrier tape sheet, and outstanding processing performance, and is an excellent carrier tape conductive layer material.
In another aspect of the present invention, an electronic component is provided, wherein the electronic component includes the electronic tape. Therefore, the electronic component has excellent conductivity and mechanical property.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic flow diagram of a method for preparing carbon nanomaterial-reinforced polystyrene according to one embodiment of the present invention;
FIG. 2 is a schematic flow diagram of a method for preparing carbon nanomaterial-reinforced polystyrene according to still another embodiment of the present invention;
FIG. 3 is an enlarged view of the carbon nanomaterial-reinforced polystyrene obtained in example 1 under a microscope;
fig. 4 is an SEM image of the carbon nanomaterial-reinforced polystyrene obtained in example 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In one aspect of the present invention, the present invention provides a carbon nanomaterial-reinforced polystyrene, which, according to an embodiment of the present invention, includes: 60-85 parts by weight of polystyrene; 1-7 parts by weight of carbon nano conductive filler; 5-15 parts by weight of a filler coating agent; 0.5-8 parts by weight of a modifier; 0.2-1.5 parts by weight of auxiliary agent. The inventor finds that the filler coating agent is coated on the surface of the carbon nano conductive filler by adding a small amount of the carbon nano conductive filler and adding the filler coating agent, so that the carbon nano conductive filler is uniformly dispersed in polystyrene, and the carbon nano material reinforced polystyrene can have a stable conductive network structure, so that the composite material has an excellent conductive function. Meanwhile, by adding a small amount of carbon nano conductive filler, the resistivity of the obtained carbon nano material reinforced polystyrene is not too good, and the requirements of subsequent products can still be met. And the well-dispersed carbon nano material also has excellent reinforcing effect, can obviously improve the tensile strength, the impact strength and the elongation at break of the polystyrene, and realizes the good balance of the comprehensive mechanical properties of the composite material. Furthermore, the higher content of the filler coating agent can improve the dispersion performance of the material, improve the smoothness of the surface of the material, but reduce the comprehensive mechanical property of the material, limit the processing performance of the material, and only play a role in coating the powder on the granules and facilitating the processing by the lower content of the filler coating agent, so that the influence on the comprehensive performance of the material is small.
Specifically, the specific type of the polystyrene is not particularly limited, and those skilled in the art can select the polystyrene according to actual needs, for example, the polystyrene may be extrusion grade polystyrene, injection-molded grade polystyrene, and the like, and the specific type of the carbon nano conductive filler is also not particularly limited, and those skilled in the art may select the polystyrene according to actual needs, for example, at least one selected from graphite, graphene, carbon nanotube, and conductive carbon black. The inventor finds that the carbon nano conductive filler compounding system is easier for materials to form a conductive network, and the comprehensive performance of the material is superior to that of a single carbon nano conductive filler. The sheet diameter of graphene as the carbon nano conductive filler can be 2-20 μm, such as 2 μm, 5 μm, 10 μm, 15 μm and 20 μm, and the thickness can be not more than 5nm, such as 1nm, 2nm, 3nm, 4nm and 5 nm. The inventor finds that the sheet diameter and the thickness of the graphene can be macroscopically observed to have certain influence on the polarization color of the material through an optical microscope, and the refractive index of the film formed by the material can be reflected. The carbon nanotubes as the carbon nano conductive filler may have a diameter of 1 to 10nm, for example, 1nm, 3nm, 5nm, 7nm, 9nm, 10nm, and an aspect ratio of not less than 2000. The inventor finds that the carbon nano tube is more easily agglomerated as the diameter is smaller, the larger the winding phenomenon is more obvious, and the material with longer length-diameter ratio is more easily formed into a good conductive network. The conductive carbon black as the carbon nano conductive filler may have a particle diameter of not more than 30nm, and for example, may be 1nm, 5nm, 10nm, 15nm, 20nm, 25nm, 30 nm. The inventor finds that the particle size of the conductive carbon black is too large, and the dispersion performance and the comprehensive mechanical property of the material are greatly influenced.
Further, the specific types of the filler coating agent, the modifier and the auxiliary agent are not particularly limited, and may be selected by those skilled in the art according to actual needs, for example, the filler coating agent may be at least one selected from liquid paraffin oil and zinc stearate. The inventor finds that the liquid paraffin oil has a certain coating effect and can improve the processing performance of the material. The modifier may be at least one selected from the group consisting of ethylene-propylene-diene monomer, butadiene rubber, isobutylene rubber, nitrile rubber, ethylene-butyl acrylate-glycidyl methacrylate copolymer, ethylene-methyl acrylate-glycidyl methacrylate copolymer, styrene-butadiene thermoplastic elastomer, hydrogenated styrene-butadiene block copolymer, chlorinated polyethylene, acrylonitrile-butadiene-styrene copolymer, methyl acrylate-butadiene-styrene copolymer. The present inventors have found that an ethylene-methyl acrylate-glycidyl methacrylate copolymer can be used for modifying an ethylene-based polymer and a polycondensation-based polymer because both functional groups, i.e., an active vinyl group and an ionically reactive epoxy group, can be polymerized by a functional group and also can be polymerized by an ionic reaction. The auxiliary agent can be at least one selected from the group consisting of HONEYWELL AC6, HONEYWELL C5, HONEYWELL B6, titanate coupling agent 201, silane coupling agent 550, KT15 and KT 25. The inventor finds that the HONEYWELL B6 has extremely high external lubrication and demolding effects, does not influence the Vicat thermal change temperature and the impact strength of the product, and the HONEYWELL B6 can improve the extrusion rate of the product and keep the surface of the product glossy.
According to the carbon nano material reinforced polystyrene disclosed by the embodiment of the invention, a small amount of carbon nano conductive filler is added, and the filler coating agent is added, so that the surface of the carbon nano conductive filler is coated with the filler coating agent, the carbon nano conductive filler is favorably and uniformly dispersed in the polystyrene, and the carbon nano material reinforced polystyrene can have a stable conductive network structure and endow the composite material with an excellent conductive function. Meanwhile, by adding a small amount of carbon nano conductive filler, the resistivity of the obtained carbon nano material reinforced polystyrene is not too good, and the requirements of subsequent products can still be met. And the well-dispersed carbon nano material also has excellent reinforcing effect, can obviously improve the tensile strength, the impact strength and the elongation at break of the polystyrene, and realizes the good balance of the comprehensive mechanical properties of the composite material.
In still another aspect of the present invention, the present invention provides a method for preparing the above carbon nanomaterial-reinforced polystyrene, the method comprising, according to an embodiment of the present invention: mixing polystyrene with carbon nano conductive filler, filler coating agent, modifier and auxiliary agent in sequence, and performing primary extrusion granulation, drying and secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene. The inventor finds that the carbon nano material reinforced polystyrene has more excellent conductivity by adopting the melt extrusion mode for granulation, and can improve the dispersibility and mechanical properties of the carbon nano conductive filler in the polystyrene, and the point resistance of the carbon nano conductive filler is uniform. Specifically, the specific modes of mixing polystyrene with the carbon nano conductive filler, the filler coating agent, the modifier and the auxiliary agent, and performing primary extrusion granulation, drying and secondary extrusion granulation are not particularly limited, and those skilled in the art can select the mixture according to actual needs, for example, referring to fig. 1, including:
s100: mixing and stirring a part of polystyrene with carbon nano conductive filler and filler coating agent for the first time
In the step, a part of polystyrene, carbon nano conductive filler and filler coating agent are mixed and stirred for the first time. Further, the first mixing and stirring can be performed in a high-speed stirrer, specifically, the first mixing and stirring can be performed at a rotation speed of 600-. The inventor finds that the time length and the rotating speed of the first mixing stirring can influence the pre-dispersion performance of the material and the state of the filler coating agent in the system.
S200: mixing the material obtained by the first mixing and stirring, the modifier and the auxiliary agent for the second mixing and stirring
In the step, the material obtained by the first mixing and stirring is mixed and stirred with the modifier and the auxiliary agent for the second time. The inventors have found that modifiers and auxiliaries can improve the processability of the material and can improve the dispersibility of the material as a whole. Further, the second mixing and stirring can be performed in a high-speed stirrer, and specifically, the second mixing and stirring can be performed at a rotation speed of 1200-. The inventors have found that the time and speed of the second mixing and stirring can affect the predispersion of the material and the state of the filler coating agent in the system.
S300: performing primary extrusion granulation on the material obtained by secondary mixing and stirring, drying the obtained master batch, mixing the dried master batch with the other part of the polystyrene, and performing secondary extrusion granulation
And in the step, performing primary extrusion granulation on the material obtained by the second mixing and stirring, drying the obtained master batch, mixing the dried master batch with the other part of the polystyrene, and performing secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene. The inventor finds that the material obtained by the second mixing and stirring is subjected to primary extrusion granulation and then mixed with the other part of the polystyrene, and secondary extrusion granulation is carried out, namely, the primary extrusion granulation is firstly carried out to prepare the master batch with higher content of the carbon nano conductive filler, and then the master batch is added and diluted to obtain the carbon nano material reinforced polystyrene with proper content of the carbon nano conductive filler, so that the content of the carbon nano conductive filler in the carbon nano material reinforced polystyrene is effectively controlled, and the carbon nano material reinforced polystyrene with uniformly distributed carbon nano conductive filler is obtained, so that the carbon nano material reinforced polystyrene has excellent conductivity and mechanical property, and the point resistance is uniform.
It should be noted that, both the primary extrusion granulation and the secondary extrusion granulation can be performed in a flat twin extruder, so that the comprehensive performance of the carbon nanomaterial reinforced polystyrene can be further improved. Further, the mass ratio of one part of polystyrene in S100 to another part of polystyrene in S300 is not particularly limited, and may be selected by those skilled in the art according to actual needs, and may be, for example, 4 to 6: 6-4, preferably 1: 1. the inventors found that when the ratio is 1: the dispersion effect is best when 1 hour.
Further, the concrete modes of mixing polystyrene with the carbon nano conductive filler, the filler coating agent, the modifier and the auxiliary agent, performing primary extrusion granulation, drying and secondary extrusion granulation can also refer to fig. 2, and include:
s1: part of polystyrene, carbon nano conductive filler, filler coating agent, modifier and auxiliary agent are sent into an internal mixer to be mixed and internally mixed, and then are extruded and granulated once
In the step, one part of polystyrene, the carbon nano conductive filler, the filler coating agent, the modifier and the auxiliary agent are sent to an internal mixer for mixing and internal mixing, and are extruded and granulated for one time. The inventor finds that the dispersion performance of the high-concentration powder can be better improved by banburying. The primary extrusion granulation may be performed in a single screw extruder.
S2: drying the master batch obtained by the primary extrusion granulation, mixing the master batch with the other part of the polystyrene, and then carrying out secondary extrusion granulation
In the step, the master batch obtained by the primary extrusion granulation is dried and mixed with the other part of the polystyrene, and the carbon nano material reinforced polystyrene is obtained after the secondary extrusion granulation. The inventor finds that the master batch obtained by the primary extrusion granulation is mixed with the other part of the polystyrene and then subjected to the secondary extrusion granulation, namely, the master batch with higher content of the carbon nano conductive filler is prepared by the primary extrusion granulation, and then the polystyrene is added and the master batch is diluted to obtain the carbon nano material reinforced polystyrene with proper content of the carbon nano conductive filler, so that the content of the carbon nano conductive filler in the carbon nano material reinforced polystyrene is effectively controlled, the carbon nano material reinforced polystyrene with uniformly distributed carbon nano conductive filler is obtained, and the carbon nano material reinforced polystyrene has excellent conductivity and mechanical property and uniform point resistance.
Further, the mass ratio of one part of the polystyrene in S1 to the other part of the polystyrene in S2 is not particularly limited, and may be selected by those skilled in the art according to actual needs, and may be, for example, 4 to 6: 6-4, preferably 1: 1. the inventors found that when the ratio is 1: the material dispersion effect is best at 1 hour.
According to the method for preparing the carbon nano material reinforced polystyrene, disclosed by the embodiment of the invention, a small amount of the carbon nano conductive filler is added, and the filler coating agent is added, so that the filler coating agent is coated on the surface of the carbon nano conductive filler, and the carbon nano conductive filler is favorably and uniformly dispersed in the polystyrene, so that the carbon nano material reinforced polystyrene can have a stable conductive network structure, and an excellent conductive function is endowed to a composite material. Meanwhile, by adding a small amount of carbon nano conductive filler, the resistivity of the obtained carbon nano material reinforced polystyrene is not too good, and the requirements of subsequent products can still be met. And the well-dispersed carbon nano material also has excellent reinforcing effect, can obviously improve the tensile strength, the impact strength and the elongation at break of the polystyrene, and realizes the good balance of the comprehensive mechanical properties of the composite material. Furthermore, by adopting the melt extrusion mode for granulation, the carbon nano material reinforced polystyrene has more excellent conductivity, the dispersibility and the mechanical property of the carbon nano conductive filler in the polystyrene can be improved, and the point resistance is uniform. It should be noted that the characteristics and advantages of the carbon nanomaterial reinforced polystyrene are also applicable to the method for preparing the carbon nanomaterial reinforced polystyrene, and are not described again.
In yet another aspect of the present invention, the present invention provides an electronic carrier tape, according to an embodiment of the present invention, the electronic carrier tape includes the above-described carbon nanomaterial-reinforced polystyrene or the carbon nanomaterial-reinforced polystyrene prepared by the above-described method of preparing the carbon nanomaterial-reinforced polystyrene. Therefore, the electronic carrier tape has uniform point resistance, good conductivity and mechanical properties, excellent surface flatness and dimensional stability of the carrier tape sheet, and outstanding processing performance, and is an excellent carrier tape conductive layer material. It should be noted that the characteristics or advantages of the carbon nanomaterial reinforced polystyrene or the method for preparing the carbon nanomaterial reinforced polystyrene are also applicable to the electronic carrier tape, and are not described again.
In yet another aspect of the present invention, an electronic component is provided, and according to an embodiment of the present invention, the electronic component includes the above-described electronic tape. Specifically, the electronic component may be an electronic chip, a semiconductor, or the like. Therefore, the electronic component has excellent conductivity and mechanical property. It should be noted that the features and advantages of the electronic carrier tape are also applicable to the electronic component, and are not described in detail herein.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 85.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape, wherein a microscopic enlarged view and an SEM image of the polystyrene are shown in figures 3 and 4.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 1.16X 103Ω, tensile strength: 42MPa (ASTM-D638, 5mm/min), flexural Strength: 46MPa (ASTM-D790, 2mm/min), elongation at break: 45% (ASTM-D638, 5mm/min), simply supported beam notched impact strength: 7.734KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.124% (ASTM D955-2000), the material surface flatness is good, the processability is excellent.
Example 2
The internal mixer temperature was set to 195 ℃.
The temperature range of the single screw extruder was set at 180 ℃, 200 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, the screw length-diameter ratio of the flat double extruder is 44.
The carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 85.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
The carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape is prepared by carrying out banburying molding on the components of the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape by using a banbury mixer and then carrying out primary granulation by using a single-screw extruder, wherein the components are sequentially added with carbon nano conductive filler, liquid paraffin oil, titanate coupling agent, PS, compound auxiliary agent and compound toughening modifier during banburying. Drying the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape, and mixing the dried master batch A with PS according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter, and the measured surface resistance was 2.24X 103Ω, tensile strength: 39MPa (ASTM-D638, 5mm/min), flexural Strength: 43MPa (ASTM-D790, 2mm/min), elongation at break: 39% (ASTM-D638, 5mm/min), simply supported beam notched impact strength: 6.654KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.203 percent (ASTM D955-2000), good surface flatness of the material and excellent processing performance.
Example 3
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.2 percent; carbon nanotube: 2 percent; PS: 92.53 percent; liquid paraffin oil: 2 percent; titanate coupling agent: 0.02 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 3 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.25 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. And extruding the premix material by a flat double extruder for the first time, cooling and granulating, drying, and extruding and granulating by a flat double extruder for the second time to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 1.56X 104Ω, tensile strength: 38MPa (ASTM-D638, 5mm/min), flexural Strength: 40MPa (ASTM-D790, 2mm/min), elongation at break: 41% (ASTM-D638, 5mm/min), simple beam notched impact strength: 7.467KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.256% (ASTM D955-2000), the material surface flatness is good, the processability is excellent.
Example 4
The internal mixer temperature was set to 195 ℃.
The temperature range of the single screw extruder was set at 180 ℃, 200 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and 44 ℃ of the screw length-diameter ratio of the flat twin-extruder.
The carbon nano material reinforced polystyrene for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.2 percent; carbon nanotube: 2 percent; PS: 92.53 percent; liquid paraffin oil: 2 percent; titanate coupling agent: 0.02 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 3 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.25 percent.
And carrying out banburying molding on the components of the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape by using a banbury mixer, carrying out primary granulation by using a single-screw extrusion agent, drying, carrying out secondary extrusion by using a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape. During banburying, the components are added with carbon nano conductive filler, liquid paraffin oil, titanate coupling agent, PS, composite auxiliary agent and composite toughening modifier in sequence.
Utilization tableThe surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter, and the measured surface resistance was 6.65X 104Ω, tensile strength: 44MPa (ASTM-D638, 5mm/min), flexural Strength: 40MPa (ASTM-D790, 2mm/min), elongation at break: 36% (ASTM-D638, 5mm/min), impact strength of simple beam notch 7.767KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.187% (ASTM D955-2000), the material surface flatness is general, the processability is excellent.
Comparative example 1 without addition of carbon nanotubes
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 4.4 percent; PS: 85.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter, and the measured surface resistance was 6.43X 102Omega, tensile strength: 35MPa (ASTM-D638, 5mm/min), flexural Strength: 33MPa (ASTM-D790, 2mm/min), elongation at break: 37% (ASTM-D638, 5mm/min), simple beam notched impact strength: 6.234KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.423% (ASTM D955-2000), the material surface smoothness is general, and the processability is excellent.
The Xinao self-produced two-dimensional graphene has ultrahigh conductivity, and compared with 7738S/m carbon nano-tubes, the conductivity of the two-dimensional graphene can reach 248200S/m, so that the surface resistance of the carbon nano-material reinforced polystyrene for the high-precision electronic carrier tape obtained in comparative example 1 is lower than that of examples 1-4; meanwhile, the elongation at break of the composite toughening modifier in the comparative example 1 is higher than that of the composite toughening modifier in the example 4 by 3 percent; also, comparative example 1 has more composite toughening modifiers than examples 1-4, making the material more shrinkable and more shrinkable.
Comparative example 2 no addition of graphene
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: carbon nanotube: 4.4 percent; PS: 85.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 3.89X 103Ω, tensile strength: 40MPa (ASTM-D638, 5mm/min), flexural Strength: 42MPa (ASTM-D790, 2mm/min), elongation at break: 42% (ASTM-D638, 5mm/min), simple beam notched impact strength: 7.744KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.16% (ASTM D955-2000), the material surface smoothness is general, and the processability is excellent.
The surface resistance of the graphene is lower than that of the graphene in examples 3 and 4, and the conductivity of the graphene is better than that of a pure carbon nanotube due to the addition of a proper amount of two-dimensional graphene in examples 3 and 4; the tensile strength is higher than that of the embodiment 2 and 3, because the carbon nano tube can improve the tensile property of the material by a certain amount compared with the graphene in the structure in the comparative embodiment 2, and the composite toughening modifier is higher than that in the comparative embodiment 3 by 3 percent; the bending strength is higher than that of the examples 3 and 4, the elongation at break is higher than that of the examples 2-4, and the impact strength of the notch of the simply supported beam is higher than that of the examples 1-3, because the composite toughening modifiers are different, and the carbon nano tube reinforces the mechanical property of the material; the material shrinkage was higher than that of example 1, demonstrating that the complex system was superior to the monomer system conductive filler in terms of shrinkage.
Comparative example 3: increasing the content of modifier
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 82.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 9 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 1.24X 103Ω, tensile strength: 42MPa (ASTM-D638, 5mm/min), flexural Strength: 46MPa (ASTM-D790, 2mm/min), elongation at break: 44% (ASTM-D638, 5mm/min), simply supported beam notched impact strength: 8.734KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.489% (ASTM D955-2000), the material surface smoothness is general, and the processability is excellent.
Comparative example 4: reducing the modifier content
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 88.06 percent; liquid paraffin oil: 4 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 3 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 1.56X 103Ω, tensile strength: 35MPa (ASTM-D638, 5mm/min), flexural Strength: 34MPa (ASTM-D790, 2mm/min), elongation at break: 34% (ASTM-D638, 5mm/min), impact strength of a simple beam notch: 6.134KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.177% (ASTM D955-2000), the material surface flatness is general, the processability is excellent.
Comparative example 5: reducing the content of the filler coating agent
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 87.06 percent; liquid paraffin oil: 2 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter to be 3.56X 104Ω, tensile strength: 46MPa (ASTM-D638, 5mm/min), flexural Strength: 47MPa (ASTM-D790, 2mm/min), elongation at break: 45% (ASTM-D638, 5mm/min), simply supported beam notched impact strength: 8.736KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.197% (ASTM D955-2000), the material surface smoothness is general, the processability is excellent.
Comparative example 6: increasing the content of the filler coating agent
The temperature of the high-speed stirrer is set to be 90-120 ℃.
The temperature section of the twin flat extruder was set to: 180 ℃, 190 ℃, 200 ℃, 210 ℃, 215 ℃, 210 ℃, 200 ℃, and the length-diameter ratio of the screw of the parallel double-screw extruder is 44.
The carbon nano material reinforced polystyrene master batch for the high-precision electronic carrier tape comprises the following components in percentage by weight: graphene: 0.4 percent; carbon nanotube: 4 percent; PS: 83.06 percent; liquid paraffin oil: 6 percent; titanate coupling agent: 0.04 percent; composite toughening modifier (MBS: SEBS ═ 1: 2): 6 percent; composite auxiliary (antioxidant 168: antioxidant 1010 ═ 1: 1): 0.5 percent.
PS, the carbon nano conductive filler and the filler coating agent are added into a high-speed stirrer and stirred for 1-2 minutes at the rotating speed of 650r/min, then stirred for 3-4 minutes at the rotating speed of 1300r/min, and then the composite toughening modifier and the composite auxiliary agent are added and stirred for 1-5 minutes at the rotating speed of 1300 r/min. Extruding the premix through a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene master batch A for the high-precision electronic carrier tape. After drying, the carbon nano material reinforced polystyrene master batch A and PS for the high-precision electronic carrier tape are mixed according to the proportion of 1: 1, performing secondary extrusion by a flat double extruder, and cooling and granulating to obtain the carbon nano material reinforced polystyrene for the high-precision electronic carrier tape.
The surface resistance of the carbon nanomaterial-reinforced polystyrene for high-precision electronic carrier tape obtained in this example was measured by a surface resistance meter, and the measured surface resistance was 5.24X 104Ω, tensile strength: 38MPa (ASTM-D638, 5mm/min), flexural Strength: 36MPa (ASTM-D790, 2mm/min), elongation at break: 37% (ASTM-D638, 5mm/min), simple beam notched impact strength: 6.784KJ/m2(ASTM-D256, size: 80X 10X 4mm, notch depth: 0.6mm), material shrinkage: 0.256% (ASTM D955-2000), material surface flatness is normal, processability is normal.
By comparing examples 1 to 4 with comparative examples 1 to 6, it can be seen that:
(1) as can be seen from comparison of examples 1 to 3, the carbon nanomaterial reinforced polystyrene for high-precision electronic carrier tapes prepared by the scheme of example 1 has more excellent mechanical properties and conductivity than the carbon nanomaterial reinforced polystyrene prepared by the schemes of examples 2 and 3;
(2) the embodiment 3-4 of the invention can show that the carbon nano material for the high-precision electronic carrier tape enhances the dispersion performance of the polystyrene in the flat twin-extruder to be better than that of an internal mixer;
(3) compared with the comparative examples 1 and 2, the embodiment 1 of the invention can show that under the condition of the same addition of the carbon nano conductive filler, the graphene and carbon nano tube composite has more excellent comprehensive performance, namely better performance in elongation at break, impact strength of a simple beam notch and material shrinkage, and the conductivity reaches the standard, and the comprehensive comparison can show that the carbon nano material reinforced polystyrene for the graphene and carbon nano tube composite high-precision electronic carrier tape has better comprehensive performance;
(4) compared with the comparative examples 3-4, the composite toughening modifiers with different contents have the advantages that the mechanical properties of the material in all aspects are improved along with the increase of the content of the composite toughening modifiers, the conductivity and the surface flatness of the material are changed along with the increase of the content of the composite toughening modifiers, a certain adverse effect is realized, and the composite toughening modifiers (MBS: SEBS: 1: 2) have the best comprehensive performance when the content is 6%;
(5) compared with the comparative examples 5 to 6, the filler coating agent in the embodiment 1 of the invention has different contents, the processing of the material is changed along with the increase of the content of the filler coating agent, the conductivity and the surface flatness of the material are changed along with the change of the content of the filler coating agent, and the filler coating agent has the optimal conductivity and mechanical property when the content is 4%.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A carbon nanomaterial-reinforced polystyrene, comprising:
60-85 parts by weight of polystyrene;
1-7 parts by weight of carbon nano conductive filler;
5-15 parts by weight of a filler coating agent;
0.5-8 parts by weight of a modifier;
0.2-1.5 parts by weight of auxiliary agent.
2. The carbon nanomaterial-reinforced polystyrene according to claim 1, wherein the carbon nanomaterial-conductive filler is at least one selected from graphite, graphene, carbon nanotubes, and conductive carbon black.
3. The carbon nanomaterial-reinforced polystyrene according to claim 2, wherein the graphene has a sheet diameter of 2 to 20 μm and a thickness of not more than 5 nm;
optionally, the diameter of the carbon nanotube is 1-10nm, and the length-diameter ratio is not less than 2000;
optionally, the conductive carbon black has a particle size of no greater than 30 nm;
optionally, the filler coating agent is at least one selected from liquid paraffin oil and zinc stearate;
optionally, the modifier is at least one selected from ethylene propylene diene monomer, butadiene rubber, isobutylene rubber, nitrile rubber, ethylene-butyl acrylate-glycidyl methacrylate copolymer, ethylene-methyl acrylate-glycidyl methacrylate copolymer, styrene-butadiene thermoplastic elastomer, hydrogenated styrene-butadiene block copolymer, chlorinated polyethylene, acrylonitrile-butadiene-styrene copolymer and methyl acrylate-butadiene-styrene copolymer;
optionally, the auxiliary agent is at least one selected from the group consisting of HONEYWELL AC6, HONEYWELL C5, HONEYWELL B6, titanate coupling agent 201, silane coupling agent 550, KT15 and KT 25.
4. A method of preparing the carbon nanomaterial-reinforced polystyrene of any one of claims 1 to 3, comprising:
mixing polystyrene with carbon nano conductive filler, filler coating agent, modifier and auxiliary agent in sequence, and performing primary extrusion granulation, drying and secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene.
5. The method of claim 4, comprising:
mixing and stirring a part of the polystyrene, the carbon nano conductive filler and the filler coating agent for the first time;
carrying out second mixing stirring on the material obtained by the first mixing stirring, the modifier and the auxiliary agent;
and performing the primary extrusion granulation on the material obtained by the second mixing and stirring, drying the obtained master batch, mixing the dried master batch with the other part of the polystyrene, and performing the secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene.
6. The method of claim 5, wherein the first mixing agitation and the second mixing agitation are both performed in a high speed blender;
optionally, the first mixing and stirring is performed at a rotation speed of 600-700r/min for 1-2min and at a rotation speed of 1200-1400r/min for 3-4 min;
optionally, the second mixing and stirring is performed at a rotation speed of 1200-1400r/min for 1-5 min;
optionally, the primary extrusion granulation and the secondary extrusion granulation are both performed in a flat twin extruder;
optionally, the mass ratio of one part of the polystyrene to the other part of the polystyrene is 4-6: 6-4.
7. The method of claim 4, comprising:
feeding a part of the polystyrene, the carbon nano conductive filler, the filler coating agent, the modifier and the auxiliary agent into an internal mixer for mixing and banburying, and performing the primary extrusion granulation;
and drying the master batch obtained by the primary extrusion granulation, mixing the master batch with the other part of the polystyrene, and performing the secondary extrusion granulation to obtain the carbon nano material reinforced polystyrene.
8. The method according to claim 7, wherein the primary extrusion granulation is performed in a single screw extruder and the secondary extrusion granulation is performed in a flat twin extruder;
optionally, the mass ratio of one portion of the polystyrene to another portion of the polystyrene is from 4 to 6: 6-4.
9. An electronic carrier tape, comprising the carbon nanomaterial-reinforced polystyrene of any one of claims 1 to 3 or the carbon nanomaterial-reinforced polystyrene prepared by the method for preparing a carbon nanomaterial-reinforced polystyrene of any one of claims 4 to 8.
10. An electronic component, characterized in that the electronic component comprises the electronic carrier tape according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935420.1A CN110669296A (en) | 2019-09-29 | 2019-09-29 | Carbon nano material reinforced polystyrene and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935420.1A CN110669296A (en) | 2019-09-29 | 2019-09-29 | Carbon nano material reinforced polystyrene and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110669296A true CN110669296A (en) | 2020-01-10 |
Family
ID=69080183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910935420.1A Pending CN110669296A (en) | 2019-09-29 | 2019-09-29 | Carbon nano material reinforced polystyrene and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110669296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391011A (en) * | 2020-11-18 | 2021-02-23 | 台春节能新材料(苏州)有限公司 | Novel high-heat-resistance xps extrusion-molded heat-insulation board and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090136A (en) * | 2017-05-19 | 2017-08-25 | 深圳市纳米港有限公司 | Anlistatig polystyrene polymeric composite and preparation method thereof |
| CN108250603A (en) * | 2018-01-19 | 2018-07-06 | 广州润锋科技有限公司 | Polystyrene carrier material that a kind of carbon nanotube conducting is modified and preparation method thereof |
| CN109135270A (en) * | 2018-08-09 | 2019-01-04 | 厦门巧亿科技有限公司 | A kind of conduction of modified graphene, anti-static plastic and preparation method thereof |
| CN109880247A (en) * | 2019-02-18 | 2019-06-14 | 华研(佛山)纳米材料有限公司 | A kind of polystyrene electronic carrier tape material and preparation method thereof containing ultra-dispersed carbon nanotube |
-
2019
- 2019-09-29 CN CN201910935420.1A patent/CN110669296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107090136A (en) * | 2017-05-19 | 2017-08-25 | 深圳市纳米港有限公司 | Anlistatig polystyrene polymeric composite and preparation method thereof |
| CN108250603A (en) * | 2018-01-19 | 2018-07-06 | 广州润锋科技有限公司 | Polystyrene carrier material that a kind of carbon nanotube conducting is modified and preparation method thereof |
| CN109135270A (en) * | 2018-08-09 | 2019-01-04 | 厦门巧亿科技有限公司 | A kind of conduction of modified graphene, anti-static plastic and preparation method thereof |
| CN109880247A (en) * | 2019-02-18 | 2019-06-14 | 华研(佛山)纳米材料有限公司 | A kind of polystyrene electronic carrier tape material and preparation method thereof containing ultra-dispersed carbon nanotube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112391011A (en) * | 2020-11-18 | 2021-02-23 | 台春节能新材料(苏州)有限公司 | Novel high-heat-resistance xps extrusion-molded heat-insulation board and preparation process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101309738B1 (en) | Polymer/conductive filler composite with high electrical conductivity and the preparation method thereof | |
| EP1813649B1 (en) | Electroconductive masterbatch and resin composition including the same | |
| Zhan et al. | Electrical, thermal, and mechanical properties of polyarylene ether nitriles/graphite nanosheets nanocomposites prepared by masterbatch route | |
| KR102085939B1 (en) | A expanded bead having electrical conductivity and a method for manufacturing the same | |
| CN102585348A (en) | Toughened conducting material and preparation method for toughened conducting material | |
| WO2013111862A1 (en) | Method for producing master batch for conductive resin, and master batch | |
| KR102359134B1 (en) | Conductive resin composition, molded article and manufacturing method thereof | |
| CN111117200A (en) | Graphene reinforced polycarbonate conductive composite material and preparation method thereof | |
| TW201924913A (en) | Electrically conductive resin composition and method of preparing the same | |
| CN115216130A (en) | Carbon nano tube modified polycarbonate composite material with high conductivity, high flatness and low micro-pores, and preparation method and product thereof | |
| KR101055620B1 (en) | Polymer / carbon nanotube composite with excellent electrical properties and its manufacturing method | |
| CN110669296A (en) | Carbon nano material reinforced polystyrene and preparation method and application thereof | |
| WO2013157621A1 (en) | Masterbatch for electrically conductive resin, and electrically conductive resin | |
| JPS6246925B2 (en) | ||
| CN114590000B (en) | Polyetherimide composite film and preparation method thereof | |
| US20170287585A1 (en) | Electroconductive Resin Composite and Electroconductive Resin Composition Having Excellent Impact Strength, and Method of Producing the Same | |
| US20210082598A1 (en) | Conductive High Strength Extrudable Ultra High Molecular Weight Polymer Graphene Oxide Composite | |
| CN110724340B (en) | Permanent antistatic polypropylene composite material and preparation method thereof | |
| TWI721556B (en) | Electrically conductive resin composition and preparation method thereof | |
| JP2003286350A (en) | Molded articles of carbon fiber reinforced thermoplastic resin containing carbon nanotube and method for production thereof | |
| CN108314889A (en) | A kind of high heat conduction high temperature resistant PC composite material and preparation methods | |
| CN114507379B (en) | Heat-conducting composite filler, preparation method thereof, heat-conducting thermoplastic resin composite material and application thereof | |
| CN117924874A (en) | Electromagnetic wave absorbing material, wire rod, preparation method and application thereof | |
| CN112300554B (en) | Flame-retardant polycarbonate with carbon nano tube enhanced laser marking and application thereof | |
| JPS6345421B2 (en) |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |