CN112778762B - Conductive PPS composite material and preparation method thereof - Google Patents
Conductive PPS composite material and preparation method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title abstract description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 88
- 239000011347 resin Substances 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 45
- 239000000314 lubricant Substances 0.000 claims abstract description 43
- 239000012745 toughening agent Substances 0.000 claims abstract description 40
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 36
- 238000002156 mixing Methods 0.000 claims description 44
- 239000000463 material Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 20
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- 241000872198 Serjania polyphylla Species 0.000 abstract description 7
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- 238000005054 agglomeration Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000203 mixture Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 238000009472 formulation Methods 0.000 description 6
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 235000019384 rice bran wax Nutrition 0.000 description 5
- 239000004170 rice bran wax Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000011231 conductive filler Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
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- 239000005977 Ethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 150000001336 alkenes Chemical group 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 229920001897 terpolymer Polymers 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
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- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
-
- 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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a conductive PPS composite material and a preparation method thereof, belonging to the technical field of modification of high polymer materials. The conductive PPS composite material comprises the following components in parts by weight: 40-75 parts of PPS resin, 20-40 parts of modified conductive carbon black master batch and 5-20 parts of toughening agent. The invention selects the conductive carbon black with smaller particle size, easy dispersion and high conductive efficiency and the lubricant to be mixed in an internal mixer and an open mill, so that the conductive carbon black is fully soaked by the lubricant, thereby improving the dispersibility in resin and reducing the agglomeration condition of the conductive carbon black; the toughening agent with high content of GMA is selected, so that the reaction activity is high, and the compatibility with PPS resin is good, thereby effectively toughening PPS.
Description
Technical Field
The invention relates to the field of modification of high polymer materials, in particular to a conductive PPS composite material and a preparation method thereof.
Background
PPS is a thermoplastic special engineering plastic with excellent comprehensive performance, and has the outstanding characteristics of high temperature resistance, corrosion resistance, radiation resistance, non-combustibility, excellent mechanical property and excellent electrical property. The method is mainly used for automobile manufacturing, electronic and electric appliances, machinery industry, chemical instruments and meters, aerospace industry and the like. However, like other plastics, PPS differs from metals primarily in its insulating and dielectric properties, which limits its ability to replace metals in certain applications. With the development of industrial production and scientific technology, some fields with higher requirements on the conductivity of materials, such as electrical engineering, electromagnetic shielding, electronic information and other fields, have higher requirements on the conductive materials, and the materials are expected to have excellent comprehensive performance.
At present, the conductive modification in the modification of PPS engineering plastics is mostly filled with graphite, and after various conductive fillers are added into PPS, the dispersion is uneven or the fillers are agglomerated, so that the toughness of the PPS is reduced. And the conductive PPS has harsh environmental conditions, and is easy to crack when applied to a workpiece used in a severe cold area, and the toughness of the conductive PPS cannot meet the requirements of the use conditions.
Therefore, how to provide a conductive PPS composite material with low temperature resistance is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention aims to provide a conductive PPS composite material and a preparation method thereof, wherein a conductive carbon black with a small particle size, easy dispersion and high conductive efficiency and a lubricant are selected and mixed in an internal mixer and an open mill, so that the conductive carbon black is fully infiltrated by the lubricant, thereby improving the dispersibility in resin and reducing the agglomeration of the conductive carbon black; the toughening agent with high GMA content is selected, so that the reactivity is very high, and the toughening agent has very good compatibility with PPS resin, thereby effectively toughening PPS. The conductive PPS generally has the problems of stress concentration caused by filler aggregation and poor material toughness because of conductive fillers, and the toughening effect of the conductive PPS material by adding the toughening agent is not obvious. The invention aims to solve the problem that the conductive filler is difficult to disperse and agglomerate in resin, and the toughening agent with higher reaction activity modifies the material, so that the conductive PPS material with better low-temperature impact is obtained.
In order to achieve the purpose, the invention adopts the following technical scheme:
a conductive PPS composite material comprises the following components in parts by weight: 40-75 parts of PPS resin, 20-40 parts of modified conductive carbon black master batch and 5-20 parts of toughening agent.
Preferably, the modified conductive carbon black master batch is composed of 95-70 parts of conductive carbon black and 5-30 parts of lubricant according to parts by weight.
The technical effect of adopting the technical scheme is as follows: the conductive carbon black with high proportion has less lubricant, so that the full mixing is difficult to carry out, and the conductive carbon black with low proportion has the problems of low effective content of master batch and high addition amount. Therefore, the proper proportion is selected, which is beneficial to practical use.
Preferably, the conductive carbon black is selected from one or more of graphene, conductive carbon nanotubes, conductive polyaniline, conductive aluminum powder, graphite, carbon fibers or iron fibers. Further preferably CABOT VULCAN XC605.
The technical effect of adopting the technical scheme is as follows: the particle size, structure, degree of oxidation, etc. of the conductive carbon black are all related to its dispersion and conductivity. The proper conductive carbon black needs to be selected, the conductive effect is considered, the dispersion effect is also considered, particularly the dispersion effect is directly related to the toughness of the material, and the influence of the good dispersion effect of the carbon black on the plastic material is small. The conductive carbon black with small particle size, easy dispersion and high conductive efficiency and the lubricant are selected and mixed in an internal mixer and an open mill, so that the conductive carbon black is fully soaked by the lubricant, the dispersibility in resin is improved, and the agglomeration condition of the conductive carbon black is reduced.
CABOT VULCAN XC605 has balanced conductivity and carbon black dispersibility, and is added into resin due to the particle size and the oxidation degree, so that the impact property is relatively good.
Preferably, the lubricant is selected from one or more of silicone, calcium stearate, zinc stearate, lithium stearate, montan wax, rice bran wax, silicone oil and polypropylene wax. More preferably, the rice bran wax RBW 300VITA.
The technical effect of adopting the technical scheme is as follows: the rice bran wax RBW 300VITA has unique wetting effect, and can effectively disperse the filler and the pigment with low dosage when being added in the production of color master batches and functional master batches.
Preferably, the PPS resin is one of noval resins 3110, 1130C, 1150C, 1170C, 1190C, or 11100C. Further preferably, the new sum 3110.
The technical effect of adopting the technical scheme is as follows: PS is selected from low flow PPS having a relatively high molecular weight and narrow distribution, typically having a New Hei 3110, and having relatively good impact properties. And because the resin has relatively high viscosity, the screw has strong shearing and dispersing effects on the carbon black in the extrusion processing process.
Preferably, the toughening agent is selected from one or more of ethylene-1-octene copolymer-methacrylic acid-glycidyl ester, random ethylene-methyl acrylate-glycidyl methacrylate terpolymer or random copolymer of ethylene and butyl acrylate. More preferably, sumitomo BOND FAST CG5001.
The technical effect of adopting the technical scheme is as follows: the toughening agent with high content of GMA is selected, so that the reaction activity is very high, the toughening agent is very compatible with PPS resin, PPS is effectively toughened, the toughening agent with high activity has very good compatibility with PPS, and the olefin structure in the molecule provides good toughness and low-temperature resistance of the material. The Sumitomo BOND FAST CG5001 toughener is characterized by 19% GMA functional groups, has very active chemical reaction activity, and simultaneously has olefin groups which provide good toughness and low temperature resistance of the material.
Preferably, the modified conductive carbon black master batch is prepared by the following method:
weighing conductive carbon black and a lubricant according to the parts by weight, mixing to obtain a premix, and putting the premix into an internal mixer for melt mixing, wherein the temperature of a screw cylinder of the internal mixer is 90-120 ℃, and the time is 30-90min;
and (3) putting the internally mixed materials into an open mill for mixing again, and slicing the materials after mixing to be used as master batch, wherein the temperature of a screw cylinder of the open mill is 90-120 ℃, and the time is 60-120min.
Preferably, the usage part ratio of the conductive carbon black to the lubricant is (2-10): 1
The invention also provides a preparation method of the conductive PPS composite material, which comprises the following steps:
s1, weighing the components in parts by weight, and blending until the components are uniform to obtain a premix;
and S2, melting and mixing the premix obtained in the step S1, and extruding and granulating to obtain the conductive PPS composite material.
Preferably, in step S1, the mixing is carried out in a mixer at a mixing rate of 300-500rpm for a mixing time of 5-20min.
Preferably, in step S2, melt mixing and extrusion granulation are performed in a twin-screw extruder;
the length-diameter ratio of the screw of the double-screw extruder is (40-48) 1, the temperature of the screw barrel is 290-330 ℃, and the rotating speed of the screw is 400-550rpm.
According to the technical scheme, compared with the prior art, the conductive PPS composite material and the preparation method thereof provided by the invention have the following technical effects:
(1) According to the conductive PPS composite material provided by the invention, the conductive carbon black with small particle size, easy dispersion and high conductive efficiency and the lubricant are selected and mixed in an internal mixer and an open mill, so that the conductive carbon black is fully soaked by the lubricant, the dispersibility in resin is improved, and the agglomeration condition of the conductive carbon black is reduced; the toughening agent with high GMA content is selected, so that the reaction activity is very high, and the toughening agent has very good compatibility with PPS resin, thereby effectively toughening PPS.
(2) The conductive PPS with better low-temperature impact prepared by the invention is a PPS resin added with self-made conductive carbon black and a toughening agent, and the volume resistivity can reach less than or equal to 10 3 Ohm cm PPS composite material with good low-temperature impact resistance.
(3) The preparation method of the conductive PPS composite material provided by the invention is prepared by carrying out melt extrusion and granulation on PPS resin, self-made conductive carbon black master batches and a toughening agent, has a simple material preparation process and low cost, and can be used in the fields of pipeline gaskets and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a conductive PPS composite material, which comprises the following components in parts by weight: 40-75 parts of PPS resin, 20-40 parts of modified conductive carbon black master batch and 5-20 parts of toughening agent.
In order to further optimize the technical scheme, the modified conductive carbon black master batch consists of 95-70 parts by weight of conductive carbon black and 5-30 parts by weight of lubricant.
In order to further optimize the technical scheme, the conductive carbon black is selected from one or a mixture of more of graphene, conductive carbon nanotubes, conductive polyaniline, conductive aluminum powder, graphite, carbon fibers or iron fibers.
In order to further optimize the technical scheme, the lubricant is selected from one or a mixture of more of silicone, calcium stearate, zinc stearate, lithium stearate, montan wax, rice bran wax, silicone oil and polypropylene wax.
In order to further optimize the technical scheme, the PPS resin is newly added into one of 3110, 1130C, 1150C, 1170C, 1190C or 11100C.
In order to further optimize the technical scheme, the toughening agent is one or a mixture of more of ethylene-1-octene copolymer-methacrylic acid-glycidyl ester, random ethylene-methyl acrylate-glycidyl methacrylate terpolymer or random copolymer of ethylene and butyl acrylate.
In order to further optimize the technical scheme, the modified conductive carbon black master batch is prepared by the following method:
weighing conductive carbon black and a lubricant according to the weight parts, mixing to obtain a premix, and putting the premix into an internal mixer for melt mixing, wherein the temperature of a screw cylinder of the internal mixer is 90-120 ℃, and the time is 30-90min;
and (3) putting the internally mixed materials into an open mill for mixing again, and slicing the materials after mixing to be used as master batch, wherein the temperature of a screw cylinder of the open mill is 90-120 ℃, and the time is 60-120min.
In order to further optimize the technical scheme, the usage part ratio of the conductive carbon black to the lubricant is (2-10): 1.
the invention also provides a preparation method of the conductive PPS composite material, which comprises the following steps:
s1, weighing the components in parts by weight, and blending until the components are uniform to obtain a premix;
and S2, carrying out melt mixing on the premix obtained in the step S1, and carrying out extrusion granulation to obtain the conductive PPS composite material.
In order to further optimize the technical scheme, in the step S1, mixing is carried out in a mixer, the mixing speed is 300-500rpm, and the mixing time is 5-20min.
In order to further optimize the technical scheme, in the step S2, the melting mixing and the extrusion granulation are carried out in a double-screw extruder;
the length-diameter ratio of the screw of the double-screw extruder is (40-48): 1, the barrel temperature is 290-330 ℃, and the screw rotating speed is 400-550rpm.
The conductive PPS composite material provided by the embodiment of the invention specifically comprises the following components: PPS resin: new sum to PPS 3110, new sum to PPS1170C; a toughening agent: sumitomo BOND FAST 2C (epoxy-containing polyethylene copolymer), sumitomo BOND FAST CG5001 (ethylene-glycidyl methacrylate copolymer); lubricant: kraien RBW 300VITA (partially saponified rice bran wax); modified conductive carbon black master batch: self-made conductive carbon black XC605 master batch; conductive carbon black: CABOT VULCAN XC605, CABOT VULCAN XC72R. The conductive carbon black with small particle size, easy dispersion and high conductive efficiency and the lubricant are selected to be mixed in an internal mixer and an open mill, so that the conductive carbon black is fully soaked by the lubricant, the dispersibility in the resin is improved, and the agglomeration condition of the conductive carbon black is reduced; the toughening agent with high GMA content is selected, so that the reactivity is very high, and the toughening agent has very good compatibility with PPS resin, thereby effectively toughening PPS. On the other hand, the preparation method of the conductive PPS composite material provided by the embodiment of the invention comprises the steps of putting PPS resin, a toughening agent and self-made modified conductive carbon black master batches into a mixer for blending until the mixture is uniform to obtain a premix; and putting the obtained premix into a double-screw extruder for melt mixing, and extruding and granulating to obtain the conductive PPS material with better low-temperature impact.
Example 1
The embodiment discloses a conductive PPS composite material, which comprises the following components: 68 parts of PPS resin, 22 parts of modified conductive carbon black master batch and 10 parts of toughening agent; wherein the PPS resin is newly-blended PPS 3110 or newly-blended PPS1170C, and the toughening agent is Sumitomo BOND FAST 2C or Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and conductive carbon black and a lubricant are mixed according to the weight ratio of 80:20, banburying in an internal mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Crainen RBW 300VITA.
Example 2
The embodiment discloses a conductive PPS composite material, which comprises the following components: 61 parts of PPS resin, 24 parts of modified conductive carbon black master batch and 15 parts of toughening agent; wherein the PPS resin is newly blended PPS 3110, and the flexibilizer is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and is prepared by mixing conductive carbon black and a lubricant according to the weight ratio of 80:20, banburying in a banbury mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Kelain RBW 300VITA.
Example 3
The embodiment discloses a conductive PPS composite material, which comprises the following components: 61 parts of PPS resin, 24 parts of modified conductive carbon black master batch and 15 parts of toughening agent; wherein the PPS resin is newly blended PPS 3110, and the toughening agent is Sumitomo BOND FAST 2C1; the modified conductive carbon black master batch is a self-made material, and conductive carbon black and a lubricant are mixed according to the weight ratio of 80:20, banburying in an internal mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Crainen RBW 300VITA.
Example 4
The embodiment discloses a conductive PPS composite material, which comprises the following components: 63 parts of PPS resin, 27 parts of modified conductive carbon black master batch and 10 parts of toughening agent; wherein, the PPS resin is newly blended PPS 3110, and the flexibilizer is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and is prepared by mixing conductive carbon black and a lubricant according to the weight ratio of 80:20, banburying in a banbury mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Kelain RBW 300VITA.
Example 5
The embodiment discloses a conductive PPS composite material, which comprises the following components: 66 parts of PPS resin, 24 parts of modified conductive carbon black master batch and 10 parts of toughening agent; wherein, the PPS resin is newly-blended PPS1170C, and the toughening agent is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and is prepared by mixing conductive carbon black and a lubricant according to the weight ratio of 80:20, banburying in an internal mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Crainen RBW 300VITA.
Example 6
The embodiment discloses a conductive PPS composite material, which comprises the following components: 40 parts of PPS resin, 40 parts of modified conductive carbon black master batch and 20 parts of toughening agent; wherein, the PPS resin is newly-blended PPS1170C, and the toughening agent is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and conductive carbon black and a lubricant are mixed according to the weight ratio of 80:20, banburying in a banbury mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Kelain RBW 300VITA.
Example 7
The embodiment discloses a conductive PPS composite material, which comprises the following components: 75 parts of PPS resin, 20 parts of modified conductive carbon black master batch and 5 parts of toughening agent; wherein the PPS resin is newly-blended PPS1170C, and the toughening agent is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and conductive carbon black and a lubricant are mixed according to the weight ratio of 80:20, banburying in an internal mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Crainen RBW 300VITA.
Example 8
The embodiment discloses a conductive PPS composite material, which comprises the following components: 65 parts of PPS resin, 20 parts of modified conductive carbon black master batch and 15 parts of toughening agent; wherein, the PPS resin is newly blended PPS 3110, and the flexibilizer is Sumitomo BOND FAST CG5001; the modified conductive carbon black master batch is a self-made material, and conductive carbon black and a lubricant are mixed according to the weight ratio of 80:20, banburying in an internal mixer, adding into an open mill, mixing to form a sheet, and slicing to obtain the conductive carbon black CABOT VULCAN XC605 and the lubricant Crainen RBW 300VITA.
Example 9
This example is essentially the same as the raw material formulation of example 8, except that: the toughening agent is Sumitomo BOND FAST 2C.
Example 10
This example is essentially the same as the raw material formulation of example 8, except that: the PPS resin is newly synthesized into PPS1170C.
Comparative example 1
This comparative example is essentially the same as the raw material formulation of example 8, except that: the modified conductive carbon black master batch is not added, the resin dosage is different, the conductive carbon black and a small amount of lubricant are added, the conductive carbon black is CABOT VULCAN XC605, and the lubricant is Kelain RBW 300VITA.
Comparative example 2
This comparative example is essentially the same as the raw material formulation of example 8, except that: the modified conductive carbon black master batch is not added, the resin dosage is different, and the conductive carbon black is CABOT VULCAN XC605.
Comparative example 3
This comparative example is essentially the same as the raw material formulation of example 8, except that: the modified conductive carbon black master batch is not added, the resin dosage is different, the conductive carbon black and a small amount of lubricant are added, the conductive carbon black is CABOT VULCAN XC72R, and the lubricant is Kelain RBW 300VITA.
The parameters in the preparation method of the conductive PPS composite material can be properly adjusted within the protection range according to actual needs by those skilled in the art. In addition, comparative examples 1 to 3 were prepared in the same manner as in examples 1 to 9.
The specific formulation of the raw materials of the conductive PPS composite materials disclosed in examples 1 to 9 of the present invention and the conductive PPS composite materials provided in comparative examples 1 to 3 are shown in table 1.
TABLE 1 proportioning Table (parts by weight) of raw materials for examples 1 to 9 and comparative examples 1 to 3
To further illustrate the technical effects of the present invention, the conductive PPS composite materials of examples 1 to 9 and comparative examples 1 to 3 were subjected to performance tests, and the test results are shown in tables 2 and 3.
The tensile strength test is carried out by adopting a plastic tensile property test method (ISO 527-2), the impact strength test of a simple beam notch is carried out by adopting a simple beam impact strength test method (ISO 179), and the surface resistance test is carried out by adopting a solid insulating material volume resistivity and surface resistivity test method (IEC 60093).
Table 2 results of performance testing of the conductive PPS composites of examples 1-9
TABLE 3 results of testing the properties of the conductive PPS composites of comparative examples 1-3
| Detecting items | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Tensile strength MPa | 35.7 | 35.7 | 36.4 |
| Tensile elongation at break% | 5.5 | 5.4 | 5.3 |
| Impact kJ/m of simply supported beam gap 2 | 9.3 | 8.7 | 8.3 |
| Impact kJ/m of a notch of a simply supported beam at minus 30 DEG C 2 | 6.4 | 6.6 | 5.6 |
| Surface resistance Ohm cm | 10 3 | 10 3 | 10 2 |
In conclusion, compared with the method of directly using carbon black for impact and low-temperature impact, the self-made conductive carbon black master batch has higher impact and conductivity; the conductive carbon black is characterized in that XC605 has better impact than XC72R, but the conductivity is not as good as XC72R, and the toughening agent with high GMA content is superior to the common toughening agent and has high impact.
It will be apparent to those skilled in the art that many modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is therefore contemplated that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The conductive PPS composite material is characterized by comprising the following components in parts by weight: 40-75 parts of PPS resin, 20-40 parts of modified conductive carbon black master batch and 5-20 parts of toughening agent;
the PPS resin is newly added 3110;
the toughening agent is Sumitomo BOND FAST CG5001;
the modified conductive carbon black master batch is prepared by mixing conductive carbon black and a lubricant according to the weight ratio of 80:20 in mass ratio; the conductive carbon black is CABOT VULCAN XC605, and the lubricant is Kelain RBW 300VITA;
the modified conductive carbon black master batch is prepared by the following method:
weighing conductive carbon black and a lubricant according to the parts by weight, mixing to obtain a premix, and putting the premix into an internal mixer for melt mixing, wherein the temperature of a screw cylinder of the internal mixer is 90-120 ℃, and the time is 30-90min; and (3) putting the internally mixed materials into an open mill for mixing again, and slicing the materials after mixing to be used as master batch, wherein the temperature of a screw cylinder of the open mill is 90-120 ℃, and the time is 60-120min.
2. A method of making the conductive PPS composite of claim 1 comprising the steps of:
s1, weighing the components in parts by weight, and blending until the components are uniform to obtain a premix;
and S2, melting and mixing the premix obtained in the step S1, and extruding and granulating to obtain the conductive PPS composite material.
3. The method for preparing a conductive PPS composite material according to claim 2, wherein the mixing is performed in a mixer at a mixing speed of 300 to 500rpm for 5 to 20min in step S1.
4. The method for preparing a conductive PPS composite material according to claim 2, wherein in step S2, melt mixing and extrusion granulation are performed in a twin-screw extruder; the length-diameter ratio of the screw of the double-screw extruder is (40-48) 1, the temperature of the screw barrel is 290-330 ℃, and the rotating speed of the screw is 400-550rpm.
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