CN104558848A - Halloysite nanotube-enhanced conducting polypropylene material and preparation method thereof - Google Patents
Halloysite nanotube-enhanced conducting polypropylene material and preparation method thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention relates to the technical field of a high molecular material, and in particular relates to a halloysite nanotube-enhanced conducting polypropylene material and a preparation method thereof. The conducting polypropylene material consists of the following raw materials in parts by weight: 30-80 parts of propene polymer (PP) resin, 5-15 parts of a polar elastomer, 5-15 parts of a flexibilizer, 1-40 parts of a halloysite nanotube, 4-15 parts of conductive carbon black, 0-1 part of nucleating agent and 0-2 parts of other auxiliaries. The conducting polypropylene material disclosed by the invention, with the low addition of the conductive carbon black, is excellent in conductivity and antistatic effect; and meanwhile, the conducting polypropylene material is relatively good in strength and toughness, long in service life, simple in production process and low in production cost.
Description
Technical field
The present invention relates to technical field of polymer materials, be specifically related to conductive polypropylene material of a kind of halloysite nanotubes enhancing and preparation method thereof.
Background technology
Polypropylene (PP) is a kind of non-polar polymeric material, has very high insulativity, and volume specific resistance can reach 10
16-10
20Ω cm, but often also easily produce electrostatic, attract dust, have impact on the application of PP in some fields.Low-resistance PP not only has outstanding antistatic effect, and can be used in the field such as electromagnetic shielding, semi-conductor.
Reducing the conventional method of PP resistivity is add static inhibitor, precipitate into surface reach antistatic effect by static inhibitor, but resistance to reduce degree little, and easily loss, timeliness are short.By filling high-effective conductive particle or electro-conductive fiber can reduce resistivity of material largely in resin, be more filled conductive carbon black in prior art.PP, EVA and graphitized carbon black combine by Chinese patent CN 1312321A, reach good conductive effect.Chinese patent CN 1583867A employs glass fiber material on PP, epoxy resin and graphitized carbon black basis, by forming the conductive path overlapped between fiber, obtains better conductivity polypropylene material.But, want product to possess good conductivity and antistatic effect, relatively large graphitized carbon black must be added, reach and ooze threshold value, the production cost of material is increased.And the interpolation of a large amount of graphitized carbon blacks and glass can cause the intensity of material and toughness all significantly to reduce, the use properties of material is declined, reduce the materials'use life-span.So market in urgent need is a kind of have the polypropylene material that good conductivity and antistatic effect possess the long life of good intensity and toughness simultaneously.
Summary of the invention
In order to overcome the shortcoming and defect existed in prior art, conductive polypropylene material providing a kind of halloysite nanotubes to strengthen and preparation method thereof, its amount adding graphitized carbon black is few, there is good conductivity and antistatic effect, possesses good intensity and toughness simultaneously, long service life, production technique is simple, and production cost is low.
The present invention is achieved through the following technical solutions.
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin 30-80 part
Polar elastomers 5-15 part
Toughner 5-15 part
Halloysite nanotubes 1-40 part
Graphitized carbon black 4-15 part
Nucleator 0-1 part
Other auxiliary agent 0-2 part.
Preferably, the conductive polypropylene material that described a kind of halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin 30-80 part
Polar elastomers 5-15 part
Toughner 5-15 part
Halloysite nanotubes 1-40 part
Graphitized carbon black 4-15 part
Nucleator 0.1-1 part
Other auxiliary agent 0.1-2 part.
Described PP resin is the one in polypropylene and co-polypropylene, and preferably the molten value of described PP resin is 1-10g/min.
Described polar elastomers is the one in POE-g-MAH, PE-g-MAH, EPDM-g-MAH, SEBS-g-MAH, EMA, EVA, EAA, and preferably the Shore A hardness of described polar elastomers is 30-90.More preferably described polar elastomers is POE-g-MAH, and its percentage of grafting is greater than 1%, can produce better action effect in melt blending with graphitized carbon black.
Described toughner is one or more the mixture of POE, PE, SEBS, EPDM, EPR, EMA, EVA, EAA.Preferably described toughner is low viscous POE, it can form the less disperse phase of size in polypropylene matrix, improve toughness of material, it has better coating function to graphitized carbon black simultaneously, graphitized carbon black is helped to form conductive network smoothly, make materials conductive performance good, the consumption of graphitized carbon black reduces, and cost declines.
The median size of described graphitized carbon black is 10-40nm, and specific surface area is 50-400m
2/ g, ratio resistance is 10-20 Ω cm.
Described halloysite nanotubes is the micro-tube shaped structure halloysite nanotubes through organic process; Preferably its mean length is 1-40 μm, and mean diameter is 10-50nm.Hydroxyl on halloysite nanotubes and polar elastomers interact at processing temperatures, expand the distribution range of graphitized carbon black, and rely on its trickle size and large length-to-diameter ratio, form the conductive network of more crypto set with graphitized carbon black, the conductivity of material and antistatic effect are strengthened further.In addition, intensive network structure effectively can improve intensity and the tough of material.
Described nucleator is one or more the mixture in Sorbitol Nucleator, organophosphate or superfine talcum powder.
Other auxiliary agent described is one or more the mixture in oxidation inhibitor, lubricant, photostabilizer, dispersion agent.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
Steps A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 3-10min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, obtain granular mixture, for subsequent use;
Step B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 3-10min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
Wherein in steps A and step B, twin screw extruder extrusion temperature is: a district temperature 140-160 DEG C, two district temperature 150-170 DEG C, three district temperature 160-180 DEG C, four district temperature 170-190 DEG C, five district temperature 180-200 DEG C, six district temperature 180-200 DEG C, seven district temperature 180-200 DEG C, eight district temperature 170-190 DEG C; Screw speed 300-500rpm.
beneficial effect of the present invention is:
The present invention uses low viscous toughner, helps graphitized carbon black to form conductive network smoothly, makes materials conductive performance good, and the consumption of graphitized carbon black reduces.Further, the halloysite nanotubes of trickle by means of size, large length-to-diameter ratio and graphitized carbon black form the conductive network of more crypto set, and the conductivity of material and antistatic effect are strengthened further, again effectively improve intensity and the tough of material.Synergy between graphitized carbon black, polar elastomers, halloysite, toughner, can significantly improve the electrical efficiency of PP.The amount that present method adds graphitized carbon black is few, has good conductivity and antistatic effect, possesses good intensity and toughness, long service life simultaneously.The present invention has prepared conductive polypropylene material by two-step approach, and production technique is simple, and production cost is low, is worthy to be popularized.The conducting polypropylene that halloysite nanotubes prepared by the present invention strengthens can be applied in conduction, electromagnetic shielding, the field such as antistatic, applied range.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and comparative example, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
embodiment 1
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 78 parts
Polar elastomers 5 parts
Toughner 4 parts
Halloysite nanotubes 8 parts
Graphitized carbon black 4 parts
Nucleator 0.2 part
Other auxiliary agent 0.8 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 8g/min; Described polar elastomers is POE-g-MAH, and its Shore A hardness is 30; Described toughner is the POE 8130 of purchased from American Tao Shi; The described halloysite nanotubes place of production is Yichang, and its mean length is 30 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces, and median size is 30nm, and specific surface area is 150m
2/ g, ratio resistance is 17 Ω cm; Described nucleator is nucleator in organic phosphate class; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:1:1:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 5min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 5min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 150 DEG C, two district's temperature 165 DEG C, three district's temperature 180 DEG C, four district's temperature 190 DEG C, five district's temperature 200 DEG C, six district's temperature 200 DEG C, seven district's temperature 190 DEG C, eight district's temperature 190 DEG C.Screw speed is 400rpm.
Material prepared by embodiment 1 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 2
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 68 parts
Polar elastomers 5 parts
Toughner 5 parts
Halloysite nanotubes 15 parts
Graphitized carbon black 7 parts
Nucleator 0.2 part
Other auxiliary agent 0.8 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 1g/min; Described polar elastomers is POE-g-MAH, and its Shore A hardness is 50; Described toughner is the POE 8130 of purchased from American Tao Shi; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; The described halloysite nanotubes place of production is Yichang, and its mean length is 20 μm, and mean diameter is 35nm; Described nucleator is nucleator in organic phosphate class; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:2:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 8min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 8min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 160 DEG C, two district's temperature 170 DEG C, three district's temperature 175 DEG C, four district's temperature 185 DEG C, five district's temperature 195 DEG C, six district's temperature 185 DEG C, seven district's temperature 200 DEG C, eight district's temperature 185 DEG C, screw speed is 350rpm.
Material prepared by embodiment 2 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 3
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 67 parts
Polar elastomers 8 parts
Toughner 4 parts
Halloysite nanotubes 15 parts
Graphitized carbon black 5 parts
Nucleator 0.3 part
Other auxiliary agent 0.7 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 3g/min; Described polar elastomers is the EMA HP4051 of purchased from American Du Pont, and its Shore A hardness is 70; Described toughner is the LLDPE 7042 that China Petrochemical Industry produces, and the described halloysite nanotubes place of production is Yichang, and its mean length is 50 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; Described nucleator is nucleator in organic phosphate class; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:3:4.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 3min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 3min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 140 DEG C, two district's temperature 150 DEG C, three district's temperature 160 DEG C, four district's temperature 170 DEG C, five district's temperature 180 DEG C, six district's temperature 180 DEG C, seven district's temperature 180 DEG C, eight district's temperature 170 DEG C.Screw speed is 500rpm.
Material prepared by embodiment 3 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 4
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 63 parts
Polar elastomers 12 parts
Toughner 6 parts
Halloysite nanotubes 25 parts
Graphitized carbon black 10 parts
Nucleator 0.3 part
Other auxiliary agent 0.7 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 5g/min; Described polar elastomers is LDPE-g-MAH, and its Shore A hardness is 90; Described toughner is the EPDM TPS SOFT purchased from German Melos; The described halloysite nanotubes place of production is Yichang, and its mean length is 10 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; Described nucleator is superfine talcum powder; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:1:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 10min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 10min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 145 DEG C, two district's temperature 160 DEG C, three district's temperature 170 DEG C, four district's temperature 180 DEG C, five district's temperature 190 DEG C, six district's temperature 190 DEG C, seven district's temperature 185 DEG C, eight district's temperature 180 DEG C.Screw speed is 300rpm.
Material prepared by embodiment 4 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 5
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 61.3 parts
Polar elastomers 5 parts
Toughner 8 parts
Halloysite nanotubes 25 parts
Graphitized carbon black 4 parts
Other auxiliary agent 0.7 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 7g/min, and described polar elastomers is LDPE-g-MAH, and its Shore A hardness is 90; Described toughner is the POE 8130 of purchased from American Tao Shi; The described halloysite nanotubes place of production is Yichang, and its mean length is 30 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:1:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 10min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, other auxiliary agent and A is added in mixing machine, mixing 10min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 145 DEG C, two district's temperature 160 DEG C, three district's temperature 170 DEG C, four district's temperature 180 DEG C, five district's temperature 190 DEG C, six district's temperature 190 DEG C, seven district's temperature 185 DEG C, eight district's temperature 180 DEG C.Screw speed is 300rpm.
Material prepared by embodiment 5 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 6
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 57.7 parts
Polar elastomers 8 parts
Toughner 6 parts
Halloysite nanotubes 20 parts
Graphitized carbon black 8 parts
Nucleator 0.3 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 2g/min; Described polar elastomers is SEBS-g-MAH, and its Shore A hardness is 75; Described toughner is the SEBS YH-501 purchased from Ba Ling petrochemical industry; The described halloysite nanotubes place of production is Yichang, and its mean length is 30 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; Described nucleator is a kind of Sorbitol Nucleator.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 10min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator and A is added in mixing machine, mixing 10min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 145 DEG C, two district's temperature 160 DEG C, three district's temperature 170 DEG C, four district's temperature 180 DEG C, five district's temperature 190 DEG C, six district's temperature 190 DEG C, seven district's temperature 185 DEG C, eight district's temperature 180 DEG C.Screw speed is 300rpm.
Material prepared by embodiment 6 adopts ASTM standard to test, and concrete test result is listed in table 1.
embodiment 7
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 68 parts
Polar elastomers 6 parts
Toughner 8 parts
Halloysite nanotubes 10 parts
Graphitized carbon black 8 parts
Wherein, described PP resin is homopolymerization, and its molten value is 10g/min; Described polar elastomers is SEBS-g-MAH, and its Shore A hardness is 75; Described toughner is the EVA 2810A of purchased from American Celanese; The described halloysite nanotubes place of production is Yichang, and its mean length is 30 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 5min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes and A is added in mixing machine, mixing 5min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
In steps A and step B, twin screw extruder extrusion temperature is: district's temperature 145 DEG C, two district's temperature 160 DEG C, three district's temperature 170 DEG C, four district's temperature 180 DEG C, five district's temperature 190 DEG C, six district's temperature 190 DEG C, seven district's temperature 185 DEG C, eight district's temperature 180 DEG C.Screw speed is 300rpm.
Material prepared by embodiment 7 adopts ASTM standard to test, and concrete test result is listed in table 1.
comparative example 1
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 99.3 parts
Other auxiliary agent 0.7 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 5g/min, and other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:1:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
Add in mixing machine by PP resin, other auxiliary agent by ratio of weight and the number of copies, mixing 5min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
Twin screw extruder extrusion temperature is: district's temperature 150 DEG C, two district's temperature 165 DEG C, three district's temperature 180 DEG C, four district's temperature 190 DEG C, five district's temperature 200 DEG C, six district's temperature 200 DEG C, seven district's temperature 190 DEG C, eight district's temperature 190 DEG C.
Screw speed is 400rpm.
Material prepared by comparative example 1 adopts ASTM standard to test, and concrete test result is listed in table 1.
comparative example 2
The conductive polypropylene material that halloysite nanotubes strengthens, comprises the raw material of following parts by weight:
PP resin: 84 parts
Toughner 5 parts
Graphitized carbon black 10 parts
Nucleator 0.2 part
Other auxiliary agent 0.8 part
Wherein, described PP resin is homopolymerization PP, and its molten value is 3g/min, and described toughner is the POE 8130 of purchased from American Tao Shi, and the described halloysite nanotubes place of production is Yichang, and its mean length is 30 μm, and mean diameter is 35nm; Described graphitized carbon black is the Corpren CB 3100 that Sweden SPC produces; Described nucleator is nucleator in organic phosphate class; Other auxiliary agent described is the mixture that antioxidant 1010, irgasfos 168, calcium stearate and photostabilizer form with ratio 1:2:2:1.
Conductive polypropylene material that a kind of halloysite nanotubes strengthens and preparation method thereof, comprises the following steps:
A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 8min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, for subsequent use;
B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and A is added in mixing machine, mixing 8min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
Twin screw extruder extrusion temperature is: district's temperature 160 DEG C, two district's temperature 170 DEG C, three district's temperature 175 DEG C, four district's temperature 185 DEG C, five district's temperature 195 DEG C, six district's temperature 185 DEG C, seven district's temperature 200 DEG C, eight district's temperature 185 DEG C.Screw speed is 350rpm.
Material prepared by comparative example 2 adopts ASTM standard to test, and concrete test result is listed in table 1.
The performance of table 1. embodiment and comparative example
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Comparative example 1 | Comparative example 2 | |
| Tensile strength (MPa) | 24.3 | 24.6 | 23.9 | 23.1 | 22.5 | 27.2 | 26.0 | 34.2 | 20.8 |
| Elongation at break (%) | 157 | 96 | 121 | 155 | 163 | 139 | 112 | 156 | 56 |
| Flexural strength (MPa) | 34.2 | 38.6 | 36.9 | 34.3 | 33.2 | 40.6 | 38.9 | 34.3 | 33.8 |
| Modulus in flexure (MPa) | 1654 | 1910 | 1858 | 1556 | 1456 | 2159 | 1923 | 1232 | 1534 |
| Izod notched impact strength (J/m) | 74 | 63 | 86 | 97 | 105 | 89 | 82 | 39 | 36 |
| Volume specific resistance (Ω cm) | 8.2×10 5 | 3.8×10 5 | 9.2×10 4 | 4.6×10 4 | 5.6×10 5 | 1.1×10 5 | 6.4×10 5 | 8.9×10 17 | 4.5×10 8 |
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and any apparent replacement is all within protection scope of the present invention without departing from the inventive concept of the premise.
Claims (10)
1. a conductive polypropylene material for halloysite nanotubes enhancing, is characterized in that: the raw material comprising following parts by weight:
PP resin 30-80 part
Polar elastomers 5-15 part
Toughner 5-15 part
Halloysite nanotubes 1-40 part
Graphitized carbon black 4-15 part
Nucleator 0-1 part
Other auxiliary agent 0-2 part.
2. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, is characterized in that: the raw material comprising following parts by weight:
PP resin 30-80 part
Polar elastomers 5-15 part
Toughner 5-15 part
Halloysite nanotubes 1-40 part
Graphitized carbon black 4-15 part
Nucleator 0.1-1 part
Other auxiliary agent 0.1-2 part.
3. the conductive polypropylene material that strengthens of a kind of halloysite nanotubes according to claim 1, is characterized in that: described PP resin is the one in polypropylene and co-polypropylene, and its molten value is 1-10g/min.
4. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, it is characterized in that: described polar elastomers is the one in POE-g-MAH, PE-g-MAH, EPDM-g-MAH, SEBS-g-MAH, EMA, EVA, EAA, its Shore A hardness is 30-90.
5. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, is characterized in that: described toughner is one or more the mixture of POE, PE, SEBS, EPDM, EPR, EMA, EVA, EAA.
6. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, is characterized in that: the median size of described graphitized carbon black is 10-40nm, and specific surface area is 50-400m
2/ g, ratio resistance is 10-20 Ω cm.
7. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, it is characterized in that: described halloysite nanotubes is the micro-tube shaped structure halloysite nanotubes through organic process, mean length is 1-40 μm, and mean diameter is 10-50nm.
8. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, is characterized in that: described nucleator is one or more the mixture in Sorbitol Nucleator, organophosphate or superfine talcum powder.
9. the conductive polypropylene material of a kind of halloysite nanotubes enhancing according to claim 1, is characterized in that: other auxiliary agent described is one or more the mixture in oxidation inhibitor, lubricant, photostabilizer, dispersion agent.
10. the preparation method of the conductive polypropylene material that a kind of halloysite nanotubes in claim 1-9 described in any one strengthens, is characterized in that: comprise the following steps:
Steps A, by ratio of weight and the number of copies polar elastomers, graphitized carbon black and toughner are added in mixing machine, be uniformly mixed 3-10min, after raw material fully mixes, by twin screw extruder melt blending and extruding pelletization, obtain granular mixture, for subsequent use;
Step B, by ratio of weight and the number of copies the granular mixture obtained in PP resin, halloysite nanotubes, nucleator, other auxiliary agent and steps A is added in mixing machine, mixing 3-10min, after fully mixing, by twin screw extruder melt blending and extruding pelletization;
Wherein in steps A and step B, twin screw extruder extrusion temperature is: a district temperature 140-160 DEG C, two district temperature 150-170 DEG C, three district temperature 160-180 DEG C, four district temperature 170-190 DEG C, five district temperature 180-200 DEG C, six district temperature 180-200 DEG C, seven district temperature 180-200 DEG C, eight district temperature 170-190 DEG C; Screw speed 300-500rpm.
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