CN105504433A - Preparation method for HDPE conductive composite material - Google Patents

Preparation method for HDPE conductive composite material Download PDF

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Publication number
CN105504433A
CN105504433A CN201510938827.1A CN201510938827A CN105504433A CN 105504433 A CN105504433 A CN 105504433A CN 201510938827 A CN201510938827 A CN 201510938827A CN 105504433 A CN105504433 A CN 105504433A
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hdpe
parts
composite material
preparation
coupling agent
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CN201510938827.1A
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Inventor
左士祥
杨阳
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Suzhou Yuxi New Material Technology Co Ltd
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Suzhou Yuxi New Material Technology Co Ltd
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Priority to CN201510938827.1A priority Critical patent/CN105504433A/en
Publication of CN105504433A publication Critical patent/CN105504433A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE

Abstract

The invention discloses a preparation method for an HDPE conductive composite material. The preparation method comprises the steps that 1, all raw materials are weighed according to the mass ratio; 2, expanded graphite is preheated, and surface treatment is performed on the preheated expanded graphite through a coupling agent; 3, polyvinyl alcohol, PE wax, POE and high-density polyethylene are added, stirring is performed for 40-60 min at the temperature of 60 DEG C-100 DEG C, then iron powder, zinc powder and UHMWPE are added, and stirring is performed for 20-40 min under the conditions that the temperature is 80 DEG C-100 DEG C, and the revolving speed is 800-1000 r/min; 4, the rest raw materials are added, mixing is performed for 80-120 min, then the raw materials are put into an extruder. According to the HDPE conductive composite material, the electromagnetic shielding effectiveness is 45-65 db, and the electrical conductivity is 7*10<-3>-10<-2>S/cm and is higher than the electrical conductivity 10<-10> of pure HDPE; the volume resistivity is 3-5.3 omega.cm, the conductive property is excellent, and the tensile strength is 41-50 MPa; the surplus raw materials are easy to obtain, the breaking elongation is 300%-320%, and the impact strength is 27-35 kJ/m<2>; the HDPE conductive composite material can be widely used and continuously replace existing materials.

Description

A kind of preparation method of HDPE conducing composite material
Technical field
The present invention relates to conductive plastics field, particularly relate to a kind of preparation method of HDPE conducing composite material.
Background technology
Conducing composite material mainly refers to conductive polymeric composite at present, specifically polymkeric substance and various conducting material is consisted of certain complex method.For a long time, macromolecular material normally widely uses in electrical industry, installation work, Communication Engineering etc. as insulating material.Common high molecular materials is in processing and use procedure, and electrostatic phenomenon is very serious, in some cases, not only can affect the use properties of material, even also can work the mischief, as reduced the use properties of sensitive film; The electrostatic precipitation of Plastic Packaging Materials, reduces commodity value; The various plastics that inflammable, explosive environments uses and electronic product, the spark blast caused due to electrostatic and burning.All these should adopt conducing composite material, to improve the electrostatic capacity of material.
Conductive polymeric composite is consisted of certain complex method polymkeric substance and various conductive material, and it comprises conductive plastics, conductive rubber, electrically conducting coating, electro-conductive fiber and electro-conductive adhesive etc.Due to electronics, communication, the developing rapidly of information technology, inevitable without Radio frequency interference (signal disturbing) of rationing the power supply, shielding and stealth material are had higher requirement.Ferrite has radar absorption characteristic, but its complete processing limits its application, if ferrite powder and resin complexes, available hot-press method is made the shielding part of different shape or is made Surface absorption coating to satisfy the demand by the method for coating.Compound conductive plastic is also used as the semiconductor layer in the inside and outside portion of high-tension cable in a large number, and the outside semiconductive layer of low-voltage cable.Conductive rubber resistance to air loss is good, through being usually used in sealing material.In addition, conductive rubber is often used in electronics and electric vacuum technology, and it can overcome the shortcoming because soldering causes, and has certain intensity and electroconductibility.
Surface conduction film forming method, can use electrically conducting coating evaporation metal or metal oxide film, and metal thermal spraying, wet method coating etc. also can be adopted to form surface conduction film.Such as, on polyester film, transparent conductive membrane made by gold evaporation, platinum or Indium sesquioxide etc.Conductive filler material dispersion method: be the main method of producing conducting polymer composite at present, can be used for manufacturing various conducting polymer composite.Electro-conductive material is conventional carbon black in the past, adopts now carbon fiber, graphite fibre, metal powder, steel fiber and fragment, the glass fibre of metallizing and other various novel conductive materials more.Electro-conductive material lamination composite algorithm: be that the conductive layers such as carbon fiber felt, wire, sheet, band and plastic base layer are overlapped together the conductive plastics made.The wire adopted, sheet, band mainly contain steel, aluminium, copper and stainless steel.The matrix resin scope that compound conductive plastic adopts is quite extensive, and conventional has: ABS, PE, EVA, PA, PC, PP, PET, POM, and PPO, PBT, PVC of modification, admixture PC/ABS etc.
HDPE is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity.High density polyethylene(HDPE) is white particle that is nontoxic, tasteless, odorless, and fusing point is about 130 DEG C, and relative density is 0.941 ~ 0.960.It has good thermotolerance and winter hardiness, and chemical stability is good, also has higher rigidity and toughness, and physical strength is good.Dielectric properties, environmental stress crack resistance is also better.Temperature of fusion 120 ~ 160 DEG C.For the material that molecule is larger, suggestion temperature of fusion scope is between 200 ~ 250 DEG C.High density polyethylene(HDPE) is kind of a white powder granular product, and nontoxic, tasteless, density is within the scope of 0.940 ~ 0.976g/cm3; Degree of crystallinity is 80% ~ 90%, and softening temperature is 125 ~ 135 DEG C, and use temperature can reach 100 DEG C; Hardness, tensile strength and creep properties are better than Low Density Polyethylene; Wear resistance, electrical insulating property, toughness and winter hardiness are all better, but poorer with low density insulativity; Chemical stability is good, at ambient temperature, is insoluble to any organic solvent, the corrosion of acid-and base-resisting and various salt; The perviousness of film to water vapour and air is little, water-absorbent is low; Loss of properties on aging, ESCR is not so good as Low Density Polyethylene, particularly thermal oxidation can make its degradation, so resin need add oxidation inhibitor and UV light absorber etc. to improve the deficiency improving this respect.The heat-drawn wire of density polyethylene film with high under stressing conditions is lower, will note during this point application.
Along with the development of social city, technicalization, along with popularizing of humanity concept, and the formation of novel harmonious society, it is very important for designing the HDPE conducing composite material that a kind of electromagnet shield effect is high, tensile strength is high, elongation at break is high, shock strength is high and volume specific resistance is low.
Summary of the invention
The invention provides a kind of preparation method of HDPE conducing composite material, solve the low and volume specific resistance high-technology problem of the electromagnet shield effect in existing HDPE conducing composite material, tensile strength, elongation at break, shock strength.
The present invention is by the following technical solutions: a kind of preparation method of HDPE conducing composite material, and concrete preparation process is as follows:
Step 1): take various raw material according to ratio of quality and the number of copies, HDPE100 part; Aluminium sesquioxide 30-40 part; Polyaniline 35-45 part; Expanded graphite 5-7 part; PE wax 2.5-3.5 part; Silicon carbide 5-15 part; Polyvinyl alcohol 8-12 part; Sulfonic acid 35-45 part; Polyaniline 50-70 part; POE15-25 part; Iron powder 9-11 part; Zinc powder 20-30 part; UHMWPE10-20 part; Oxidation inhibitor 55-65 part; Coupling agent 0.5-1.5 part; High density polyethylene(HDPE) 30-50 part;
Step 2): first expanded graphite is preheating to 70-90 DEG C, carries out surface treatment 30-50min with coupling agent;
Step 3): add polyvinyl alcohol, PE wax, POE and high density polyethylene(HDPE), stir 40-60min at 60-100 DEG C, then add iron powder, zinc powder and UHMWPE, 80-100 DEG C, rotating speed under 800-1000r/min condition, stir 20-40min;
Step 4): add surplus stock, mixing 80-120min, then drops into forcing machine, extrusion temperature 90-100 DEG C, 150-180 DEG C, 210-240 DEG C, 190-210 DEG C, screw speed 20-40r/min.
As a preferred technical solution of the present invention: the conducing composite material of HDPE described in step 1) composition by mass fraction proportioning is: HDPE100 part; Aluminium sesquioxide 35 parts; Polyaniline 40 parts; Expanded graphite 6 parts; 3 parts, PE wax; 10 parts, silicon carbide; Polyvinyl alcohol 10 parts; Sulfonic acid 40 parts; Polyaniline 60 parts; POE20 part; Iron powder 10 parts; Zinc powder 25 parts; UHMWPE15 part; 60 parts, oxidation inhibitor; Coupling agent 1 part; High density polyethylene(HDPE) 40 parts.
As a preferred technical solution of the present invention: described sulfonic acid adopts Witco 1298 Soft Acid or three carboxyl Phenylsulfonic acids.
As a preferred technical solution of the present invention: described oxidation inhibitor adopts antioxidant 1010 or irgasfos 168.
As a preferred technical solution of the present invention: described coupling agent adopts NDZ-401 titanate coupling agent or isobutyl triethoxy silane coupling agent.
All raw materials that the present invention uses are know altogether existing, and using method and function are prior art.
beneficial effect
The preparation method of a kind of HDPE conducing composite material of the present invention, adopts above technical scheme compared with prior art, has following technique effect: the electromagnet shield effect 1, substantially increasing HDPE, electromagnet shield effect 45-65db; 2, specific conductivity 7 × 10 -3-10 -2s/cm, than the specific conductivity 10 of pure HDPE -10high; 3, volume specific resistance 3-5.3 Ω cm, conductivity is excellent, tensile strength 41-50MPa; 4, raw material is easy to get, elongation at break 300-320%, shock strength 27-35kJ/m 2, can be used widely, and constantly substitute current material.
Embodiment
Set forth content of the present invention in further detail by the following examples.
embodiment 1
The first step: take according to ratio of quality and the number of copies: HDPE100 part; Aluminium sesquioxide 30 parts; Polyaniline 35 parts; Expanded graphite 5 parts; 2.5 parts, PE wax; 5 parts, silicon carbide; Polyvinyl alcohol 8 parts; Witco 1298 Soft Acid 35 parts; Polyaniline 50 parts; POE15 part; Iron powder 9 parts; Zinc powder 20 parts; UHMWPE10 part; Irgasfos 168 is 55 parts; NDZ-401 titanate coupling agent 0.5 part; High density polyethylene(HDPE) 30 parts.
Second step: first expanded graphite is preheating to 70 DEG C, carries out surface treatment 30min with coupling agent;
3rd step: add polyvinyl alcohol, PE wax, POE and high density polyethylene(HDPE), stir 40min at 60 DEG C, then add iron powder, zinc powder and UHMWPE, 80 DEG C, rotating speed under 800r/min condition, stir 20min;
4th step: add surplus stock, mixing 80min, then drops into forcing machine, extrusion temperature 90 DEG C, 150 DEG C, 210 DEG C, 190 DEG C, screw speed 20r/min.
Aluminium sesquioxide, expanded graphite and HDPE arrange in pairs or groups and use, and substantially increase the electromagnet shield effect of HDPE, electromagnet shield effect 46db; By iron powder, zinc powder and HDPE synergy, specific conductivity 7 × 10 -2s/cm, than the specific conductivity 10 of pure HDPE -10high; The synergy of silicon carbide, UHMWPE, PE wax and other component parts, volume specific resistance 5.3 Ω cm, conductivity is excellent, tensile strength 41MPa; Raw material is easy to get, elongation at break 300%, shock strength 27kJ/m 2.
embodiment 2
The first step: take according to ratio of quality and the number of copies: HDPE100 part; Aluminium sesquioxide 40 parts; Polyaniline 45 parts; Expanded graphite 7 parts; 3.5 parts, PE wax; 15 parts, silicon carbide; Polyvinyl alcohol 12 parts; Witco 1298 Soft Acid 45 parts; Polyaniline 70 parts; POE25 part; Iron powder 11 parts; Zinc powder 30 parts; UHMWPE20 part; Irgasfos 168 is 65 parts; Isobutyl triethoxy silane coupling agent 1.5 parts; High density polyethylene(HDPE) 50 parts.
Second step: first expanded graphite is preheating to 90 DEG C, carries out surface treatment 50min with coupling agent;
3rd step: add polyvinyl alcohol, PE wax, POE and high density polyethylene(HDPE), stir 60min at 100 DEG C, then add iron powder, zinc powder and UHMWPE, 100 DEG C, rotating speed under 1000r/min condition, stir 40min;
4th step: add surplus stock, mixing 120min, then drops into forcing machine, extrusion temperature 100 DEG C, 180 DEG C, 240 DEG C, 210 DEG C, screw speed 40r/min.
Aluminium sesquioxide, expanded graphite and HDPE arrange in pairs or groups and use, and substantially increase the electromagnet shield effect of HDPE, electromagnet shield effect 45db; By iron powder, zinc powder and HDPE synergy, specific conductivity 9 × 10 -3s/cm, than the specific conductivity 10 of pure HDPE -10high; The synergy of silicon carbide, UHMWPE, PE wax and other component parts, volume specific resistance 4 Ω cm, conductivity is excellent, tensile strength 47MPa; Raw material is easy to get, elongation at break 315%, shock strength 34kJ/m 2.
embodiment 3
The first step: take according to ratio of quality and the number of copies: HDPE100 part; Aluminium sesquioxide 35 parts; Polyaniline 40 parts; Expanded graphite 6 parts; 3 parts, PE wax; 10 parts, silicon carbide; Polyvinyl alcohol 10 parts; Witco 1298 Soft Acid 40 parts; Polyaniline 60 parts; POE20 part; Iron powder 10 parts; Zinc powder 25 parts; UHMWPE15 part; Irgasfos 168 is 60 parts; Isobutyl triethoxy silane coupling agent 1 part; High density polyethylene(HDPE) 40 parts.
Second step: first expanded graphite is preheating to 80 DEG C, carries out surface treatment 40min with coupling agent;
3rd step: add polyvinyl alcohol, PE wax, POE and high density polyethylene(HDPE), stir 50min at 80 DEG C, then add iron powder, zinc powder and UHMWPE, 90 DEG C, rotating speed under 900r/min condition, stir 30min;
4th step: add surplus stock, mixing 100min, then drops into forcing machine, extrusion temperature 95 DEG C, 165 DEG C, 225 DEG C, 200 DEG C, screw speed 30r/min.
Aluminium sesquioxide, expanded graphite and HDPE arrange in pairs or groups and use, and substantially increase the electromagnet shield effect of HDPE, electromagnet shield effect 65db; By iron powder, zinc powder and HDPE synergy, specific conductivity 10 -2s/cm, than the specific conductivity 10 of pure HDPE -10high; The synergy of silicon carbide, UHMWPE, PE wax and other component parts, volume specific resistance 3 Ω cm, conductivity is excellent, tensile strength 50MPa; Raw material is easy to get, elongation at break 320%, shock strength 35kJ/m 2.
Above-described embodiment is just for setting forth content of the present invention, instead of restriction, and any change therefore in the implication suitable with claims of the present invention and scope, all should think to be included in the scope of claims.

Claims (5)

1. a preparation method for HDPE conducing composite material, is characterized in that:
Step 1): take various raw material according to ratio of quality and the number of copies, HDPE100 part; Aluminium sesquioxide 30-40 part; Polyaniline 35-45 part; Expanded graphite 5-7 part; PE wax 2.5-3.5 part; Silicon carbide 5-15 part; Polyvinyl alcohol 8-12 part; Sulfonic acid 35-45 part; Polyaniline 50-70 part; POE15-25 part; Iron powder 9-11 part; Zinc powder 20-30 part; UHMWPE10-20 part; Oxidation inhibitor 55-65 part; Coupling agent 0.5-1.5 part; High density polyethylene(HDPE) 30-50 part;
Step 2): first expanded graphite is preheating to 70-90 DEG C, carries out surface treatment 30-50min with coupling agent;
Step 3): add polyvinyl alcohol, PE wax, POE and high density polyethylene(HDPE), stir 40-60min at 60-100 DEG C, then add iron powder, zinc powder and UHMWPE, 80-100 DEG C, rotating speed under 800-1000r/min condition, stir 20-40min;
Step 4): add surplus stock, mixing 80-120min, then drops into forcing machine, extrusion temperature 90-100 DEG C, 150-180 DEG C, 210-240 DEG C, 190-210 DEG C, screw speed 20-40r/min.
2. the preparation method of a kind of HDPE conducing composite material according to claim 1, is characterized in that: the conducing composite material of HDPE described in step 1) composition by mass fraction proportioning is: HDPE100 part; Aluminium sesquioxide 35 parts; Polyaniline 40 parts; Expanded graphite 6 parts; 3 parts, PE wax; 10 parts, silicon carbide; Polyvinyl alcohol 10 parts; Sulfonic acid 40 parts; Polyaniline 60 parts; POE20 part; Iron powder 10 parts; Zinc powder 25 parts; UHMWPE15 part; 60 parts, oxidation inhibitor; Coupling agent 1 part; High density polyethylene(HDPE) 40 parts.
3. the preparation method of a kind of HDPE conducing composite material according to claim 1, is characterized in that: described sulfonic acid adopts Witco 1298 Soft Acid or three carboxyl Phenylsulfonic acids.
4. the preparation method of a kind of HDPE conducing composite material according to claim 1, is characterized in that: described oxidation inhibitor adopts antioxidant 1010 or irgasfos 168.
5. the preparation method of a kind of HDPE conducing composite material according to claim 1, is characterized in that: described coupling agent adopts NDZ-401 titanate coupling agent or isobutyl triethoxy silane coupling agent.
CN201510938827.1A 2015-12-16 2015-12-16 Preparation method for HDPE conductive composite material Pending CN105504433A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114302919A (en) * 2019-09-02 2022-04-08 株式会社德山 Method for treating metal oxide powder with chemical and method for producing the same

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CN102850678A (en) * 2012-09-20 2013-01-02 吴江市天源塑胶有限公司 High-strength conductive plastic
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114302919A (en) * 2019-09-02 2022-04-08 株式会社德山 Method for treating metal oxide powder with chemical and method for producing the same
CN114302919B (en) * 2019-09-02 2023-03-31 株式会社德山 Method for treating metal oxide powder with chemical and method for producing the same

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Application publication date: 20160420