CN106633833B - The preparation method of a kind of electronic equipment case material - Google Patents
The preparation method of a kind of electronic equipment case material Download PDFInfo
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- CN106633833B CN106633833B CN201610870669.5A CN201610870669A CN106633833B CN 106633833 B CN106633833 B CN 106633833B CN 201610870669 A CN201610870669 A CN 201610870669A CN 106633833 B CN106633833 B CN 106633833B
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Abstract
The present invention relates to the preparation methods of a kind of electronic equipment case material, belong to electromangnetic spectrum field.For carbon material in traditional case material, capacitance is smaller, surface active groups are few, bad dispersibility, Secondary Emission clutter cannot effectively be inhibited, frequency electromagnetic waves, the low problem of shield effectiveness, the present invention provides the preparation methods of a kind of electronic equipment case material, aniline in-situ chemical of the present invention polymerize synthesized polyaniline enveloped carbon nanometer tube, charing process prepares nitrogen-doped carbon nanometer pipe again, it obtains using carbon nanotube as core, N doping carbon-coating is shell, with larger capacitance amount, the nitrogen-doped carbon nanometer pipe of nucleocapsid structure, and it is subjected to compound aluminium of preparing with aluminum substrate and adsorbs nitrogen-doped carbon nanometer pipe composite material, finally with melt pelletization after the equal mixings of polyamide nylon 6, injection molding, electronic equipment machine shell material is made.
Description
Technical field
The present invention relates to the preparation methods of a kind of electronic equipment case material, belong to electromangnetic spectrum field.
Background technique
With the arrival of information age, various electronics, electrical equipment are used widely, in order to establish the communication network of high speed
The working frequency of network, digital display circuit improves increasingly.And the electromagnetic interference generated therewith not only can generate danger to human body, natural environment
Evil, and adverse effect, especially high-power high-frequency equipment can be generated to electronic equipment, it can be to neighbouring electronic equipment, essence
Close instrument, communication signal, parameter testing etc. generate serious interference, and with the rapid development of electronic technology, people are in daily life
The electromagnetic radiation that contact is passively or actively in work is more and more.Scientific investigations showed that electromagnetic radiation can generate weight to human health
It influences, such as causes the obstacle of nervous system；Cause a variety of hormone disturbances of hypophysis and corticotropin raising etc.；Drop
Low pregnancy rate, delay embryonic development, promote fetal weight decline etc..On the other hand, since electromagnetic wave technology is in aerospace, logical
The extensive use in the fields such as letter, military affairs, because information-leakage event also happens occasionally caused by electromagenetic wave radiation.Meanwhile electromagnetism
Wave radiation also will cause electronic apparatus system failure, such as the electromagenetic wave radiation of extraneous electronic equipment may make pacemaker
It stops working or gets muddled, the interference of external electromagnetic wave radiation will cause weapon system failure etc., harmful to human life security
And national national defense safety.Therefore we are badly in need of taking measures to eliminate or reducing electromagnetic interference.
Common method is that electronic device shell is adulterated using carbon material at present, but in the case material of this method preparation
Carbon material, capacitance is smaller, and surface active groups are few, bad dispersibility, cannot effectively inhibit Secondary Emission clutter, high-frequency electromagnetic
Wave, shield effectiveness is low, using limited.
Summary of the invention
The technical problems to be solved by the invention: for carbon material in traditional case material, capacitance is smaller, surface-active
Group is few, bad dispersibility, cannot effectively inhibit Secondary Emission clutter, frequency electromagnetic waves, the low problem of shield effectiveness, and the present invention mentions
The preparation method of a kind of electronic equipment case material is supplied, aniline in-situ chemical of the present invention polymerize synthesized polyaniline carbon coated nanometer
Pipe, then charing process prepare nitrogen-doped carbon nanometer pipe, obtain using carbon nanotube being core, N doping carbon-coating for shell, have larger electricity
Capacity, the nitrogen-doped carbon nanometer pipe of nucleocapsid structure, and it is subjected to compound aluminium of preparing with aluminum substrate and adsorbs nitrogen-doped carbon nanometer
Pipe composite material, finally waits melt pelletization after mixings with polyamide nylon 6, and electronic equipment machine shell material is made in injection molding
Material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) 3.0 ~ 3.6g aniline is weighed, it is to stir in 5% hydrochloric acid with 300 ~ 400r/min that 480 ~ 500mL mass fraction, which is added,
After mixing 20 ~ 30min, 7.0 ~ 8.4g carbon nanotube is added, and 30 ~ 50min is dispersed with 300W ultrasonic echography, obtain carbon nanotube
7.0 ~ 8.4g ammonium persulfate is added into carbon nano tube suspension for suspension, and 300 ~ 400mL mass fraction is 5% hydrochloric acid, in ice
20 ~ 30min is stirred under water-bath, subsequent vacuum filter is washed with deionized filter residue 3 ~ 5 times, obtains polyaniline-coated carbon nanotube；
(2) the above-mentioned polyaniline-coated carbon nanotube of 3 ~ 5g is weighed, is placed in a vacuum drying oven, is dried extremely at 80 ~ 90 DEG C
Constant weight then continues in tube furnace, is heated to 400 ~ 450 DEG C under nitrogen atmosphere with 4 DEG C/min and keeps the temperature 2 ~ 3h, continues to heat
To 700 ~ 720 DEG C and 1 ~ 2h is kept the temperature, cooled to room temperature obtains nitrogen-doped carbon nanometer pipe；
(3) the above-mentioned nitrogen-doped carbon nanometer pipe of 1 ~ 2g is weighed, is added in 80 ~ 100mL dehydrated alcohol, with 500W ultrasonic echography
Disperse 15 ~ 20min, 95 ~ 98g aluminium powder is added, 20 ~ 30min is stirred with 300 ~ 400r/min, is filtered after standing 1 ~ 2h, by filter residue
It is placed in a vacuum drying oven, dries at 105 ~ 110 DEG C to constant weight, be subsequently filled into ball mill, with 400 ~ 500r/min ball milling 2
~ 3h obtains aluminium absorption nitrogen-doped carbon nanometer pipe composite material；
(4) 50 ~ 60g polyamide nylon 6 is weighed, dry 15 ~ 20h is placed in 80 ~ 90 DEG C of air dry ovens, will dry
The polyamide nylon 6 of processing and the above-mentioned aluminium of 15 ~ 20g adsorb nitrogen-doped carbon nanometer pipe composite material, 1 ~ 2g silane coupling agent
It is fitted into high-speed mixer after KH-570 mixing, 5 ~ 8min is stirred with 1500 ~ 2000r/min, obtains mixture；
(5) preheating of mixed material is added twin-screw extrude to after 50 ~ 60 DEG C, is heated to 220 ~ 240 DEG C of meltings altogether
It is mixed, 60 meshes are crossed, extruding pelletization is cooled to room temperature, and obtains composite material granular, and composite material granular is placed in 105 ~ 110 DEG C very
It in empty drying box after dry 2 ~ 3h, is fitted into injection molding machine charging basket, is heated to 200 ~ 250 DEG C, keep 15 ~ 20min of temperature, injection is pre-
For heat into 80 ~ 90 DEG C of molds, compression moulding is cooled to room temperature demoulding, obtains electronic equipment machine shell material.
Electronic equipment machine shell material compression strength prepared by the present invention is detected up to 60 ~ 70MPa, thermal coefficient reaches 66
~ 70W/mK, electromagnet shield effect is up to 60 ~ 80DB.
The method have the benefit that:
(1) electronic equipment machine shell material prepared by the present invention can effectively shield electromagnetic radiation, enhance making for electronic equipment
With safety and extend the service life of product itself；
(2) electronic device shell material shields range prepared by the present invention is wide, shielding properties is lasting, and preparation process is simple,
Product obtained is nontoxic, suitable large-scale production and application easy to use.
Specific embodiment
3.0 ~ 3.6g aniline is weighed, it is in 5% hydrochloric acid, with 300 ~ 400r/min stirring 20 that 480 ~ 500mL mass fraction, which is added,
After ~ 30min, 7.0 ~ 8.4g carbon nanotube is added, and 30 ~ 50min is dispersed with 300W ultrasonic echography, obtain carbon nanotube suspension
7.0 ~ 8.4g ammonium persulfate is added into carbon nano tube suspension for liquid, and 300 ~ 400mL mass fraction is 5% hydrochloric acid, in ice-water bath
20 ~ 30min of lower stirring, subsequent vacuum filter are washed with deionized filter residue 3 ~ 5 times, obtain polyaniline-coated carbon nanotube；It weighs
The above-mentioned polyaniline-coated carbon nanotube of 3 ~ 5g, is placed in a vacuum drying oven, and dries at 80 ~ 90 DEG C to constant weight, then continues at pipe
In formula furnace, 400 ~ 450 DEG C are heated to 4 DEG C/min under nitrogen atmosphere and keeps the temperature 2 ~ 3h, continues to be heated to 700 ~ 720 DEG C and protect
1 ~ 2h of temperature, cooled to room temperature obtain nitrogen-doped carbon nanometer pipe；Weigh the above-mentioned nitrogen-doped carbon nanometer pipe of 1 ~ 2g, it is added 80 ~
In 100mL dehydrated alcohol, 15 ~ 20min is dispersed with 500W ultrasonic echography, 95 ~ 98g aluminium powder is added, is stirred with 300 ~ 400r/min
It mixes 20 ~ 30min, is filtered after standing 1 ~ 2h, filter residue is placed in a vacuum drying oven, dried at 105 ~ 110 DEG C to constant weight, then
It is fitted into ball mill, with 400 ~ 500r/min, 2 ~ 3h of ball milling, obtains aluminium absorption nitrogen-doped carbon nanometer pipe composite material；Weigh 50 ~ 60g
Polyamide nylon 6 is placed in 80 ~ 90 DEG C of air dry ovens dry 15 ~ 20h, by the polyamide nylon 6 of drying process
Nitrogen-doped carbon nanometer pipe composite material is adsorbed with the above-mentioned aluminium of 15 ~ 20g, is packed into high-speed stirring after the mixing of 1 ~ 2g Silane coupling reagent KH-570
It mixes in machine, 5 ~ 8min is stirred with 1500 ~ 2000r/min, obtains mixture；By preheating of mixed material to after 50 ~ 60 DEG C, twin-screw is added
In extruder, 220 ~ 240 DEG C of melt blendings are heated to, cross 60 meshes, extruding pelletization is cooled to room temperature, composite material granular is obtained,
After composite material granular is placed in 105 ~ 110 DEG C of vacuum ovens dry 2 ~ 3h, it is fitted into injection molding machine charging basket, it is heated to 200 ~
250 DEG C, 15 ~ 20min of temperature is kept, injection is preheated in 80 ~ 90 DEG C of molds, and compression moulding is cooled to room temperature demoulding, obtains electronics
Equipment shell material.
Example 1
3.0g aniline is weighed, it is after stirring 20min with 300r/min, to add in 5% hydrochloric acid that 480mL mass fraction, which is added,
7.0g carbon nanotube, and 30min is dispersed with 300W ultrasonic echography, carbon nano tube suspension is obtained, into carbon nano tube suspension
7.0g ammonium persulfate is added, 300mL mass fraction is 5% hydrochloric acid, 20min is stirred under ice-water bath, subsequent vacuum filter is spent
Ion water washing filter residue 3 times, obtains polyaniline-coated carbon nanotube；The above-mentioned polyaniline-coated carbon nanotube of 3g is weighed, vacuum is placed in
In drying box, dries at 80 DEG C to constant weight, then continue in tube furnace, be heated to 400 DEG C under nitrogen atmosphere with 4 DEG C/min
And keep the temperature 2h, continue to be heated to 700 DEG C and keep the temperature 1h, cooled to room temperature obtains nitrogen-doped carbon nanometer pipe；Weigh the above-mentioned nitrogen of 1g
Doped carbon nanometer pipe is added in 80mL dehydrated alcohol, disperses 15min with 500W ultrasonic echography, 95g aluminium powder is added, with 300r/
Min stirs 20min, filters after standing 1h, filter residue is placed in a vacuum drying oven, and dries at 105 DEG C to constant weight, is subsequently filled into
In ball mill, with 400r/min ball milling 2h, aluminium absorption nitrogen-doped carbon nanometer pipe composite material is obtained；Weigh 50g polyamide Buddhist nun
Dragon 6 is placed in 80 DEG C of air dry ovens dry 15h, by the polyamide nylon 6 of drying process and the above-mentioned aluminium adsorption of nitrogen of 15g
Doped carbon nanometer pipe composite material is fitted into high-speed mixer after the mixing of 1g Silane coupling reagent KH-570, is stirred with 1500r/min
5min obtains mixture；By preheating of mixed material to after 50 DEG C, adds twin-screw extrude, be heated to 220 DEG C of melt blendings, mistake
60 meshes, extruding pelletization are cooled to room temperature, and obtain composite material granular, and composite material granular is placed in 105 DEG C of vacuum ovens
It after dry 2h, is fitted into injection molding machine charging basket, is heated to 200 DEG C, keep temperature 15min, injection is preheated in 80 DEG C of molds, is suppressed
Molding, is cooled to room temperature demoulding, obtains electronic equipment machine shell material.
Electronic equipment machine shell material compression strength prepared by the present invention is detected up to 60MPa, thermal coefficient reaches 66W/
MK, electromagnet shield effect is up to 60DB.
Example 2
3.2g aniline is weighed, it is after stirring 25min with 350r/min, to add in 5% hydrochloric acid that 490mL mass fraction, which is added,
7.5g carbon nanotube, and 40min is dispersed with 300W ultrasonic echography, carbon nano tube suspension is obtained, into carbon nano tube suspension
7.5g ammonium persulfate is added, 350mL mass fraction is 5% hydrochloric acid, 25min is stirred under ice-water bath, subsequent vacuum filter is spent
Ion water washing filter residue 4 times, obtains polyaniline-coated carbon nanotube；The above-mentioned polyaniline-coated carbon nanotube of 4g is weighed, vacuum is placed in
In drying box, dries at 85 DEG C to constant weight, then continue in tube furnace, be heated to 420 DEG C under nitrogen atmosphere with 4 DEG C/min
And keep the temperature 2.5h, continue to be heated to 710 DEG C and keep the temperature 1.5h, cooled to room temperature obtains nitrogen-doped carbon nanometer pipe；Weigh 1.5g
Above-mentioned nitrogen-doped carbon nanometer pipe is added in 90mL dehydrated alcohol, disperses 18min with 500W ultrasonic echography, 96g aluminium powder is added,
25min is stirred with 350r/min, is filtered after standing 1.5h, filter residue is placed in a vacuum drying oven, is dried at 108 DEG C to perseverance
Weight, is subsequently filled into ball mill, with 450r/min ball milling 2.5h, obtains aluminium absorption nitrogen-doped carbon nanometer pipe composite material；Weigh 55g
Polyamide nylon 6 is placed in 85 DEG C of air dry ovens dry 18h, by the polyamide nylon 6 and 18g of drying process
Above-mentioned aluminium adsorbs nitrogen-doped carbon nanometer pipe composite material, is fitted into high-speed mixer after the mixing of 1.5g Silane coupling reagent KH-570,
7min is stirred with 1800r/min, obtains mixture；By preheating of mixed material to after 55 DEG C, adds twin-screw extrude, be heated to
230 DEG C of melt blendings, cross 60 meshes, and extruding pelletization is cooled to room temperature, obtains composite material granular, composite material granular is placed in
It in 108 DEG C of vacuum ovens after dry 2.5h, is fitted into injection molding machine charging basket, is heated to 220 DEG C, keep temperature 18min, injection is pre-
For heat into 85 DEG C of molds, compression moulding is cooled to room temperature demoulding, obtains electronic equipment machine shell material.
Electronic equipment machine shell material compression strength prepared by the present invention is detected up to 65MPa, thermal coefficient reaches 68W/
MK, electromagnet shield effect is up to 70DB.
Example 3
3.6g aniline is weighed, it is after stirring 30min with 400r/min, to add in 5% hydrochloric acid that 500mL mass fraction, which is added,
8.4g carbon nanotube, and 50min is dispersed with 300W ultrasonic echography, carbon nano tube suspension is obtained, into carbon nano tube suspension
8.4g ammonium persulfate is added, 400mL mass fraction is 5% hydrochloric acid, 30min is stirred under ice-water bath, subsequent vacuum filter is spent
Ion water washing filter residue 5 times, obtains polyaniline-coated carbon nanotube；The above-mentioned polyaniline-coated carbon nanotube of 5g is weighed, vacuum is placed in
In drying box, dries at 90 DEG C to constant weight, then continue in tube furnace, be heated to 450 DEG C under nitrogen atmosphere with 4 DEG C/min
And keep the temperature 3h, continue to be heated to 720 DEG C and keep the temperature 2h, cooled to room temperature obtains nitrogen-doped carbon nanometer pipe；Weigh the above-mentioned nitrogen of 2g
Doped carbon nanometer pipe is added in 100mL dehydrated alcohol, disperses 20min with 500W ultrasonic echography, 98g aluminium powder is added, with
400r/min stirs 30min, filters after standing 2h, filter residue is placed in a vacuum drying oven, and is dried at 110 DEG C to constant weight, with
It is fitted into ball mill afterwards, with 500r/min ball milling 3h, obtains aluminium absorption nitrogen-doped carbon nanometer pipe composite material；Weigh 60g polyamide
Resin nylon 6 is placed in 90 DEG C of air dry ovens dry 20h, by the polyamide nylon 6 of drying process and the above-mentioned aluminium of 20g
Nitrogen-doped carbon nanometer pipe composite material is adsorbed, is fitted into high-speed mixer after the mixing of 2g Silane coupling reagent KH-570, with 2000r/
Min stirs 8min, obtains mixture；It by preheating of mixed material to after 60 DEG C, adds twin-screw extrude, is heated to 240 DEG C of meltings
It is blended, crosses 60 meshes, extruding pelletization is cooled to room temperature, obtains composite material granular, composite material granular is placed in 110 DEG C of vacuum
It in drying box after dry 3h, is fitted into injection molding machine charging basket, is heated to 250 DEG C, keep temperature 20min, injection is preheated to 90 DEG C of moulds
In tool, compression moulding is cooled to room temperature demoulding, obtains electronic equipment machine shell material.
Electronic equipment machine shell material compression strength prepared by the present invention is detected up to 70MPa, thermal coefficient reaches 70W/
MK, electromagnet shield effect is up to 80DB.
Claims (1)
1. the preparation method of a kind of electronic equipment case material, it is characterised in that specific preparation step are as follows:
(1) weigh 3.0 ~ 3.6g aniline, 480 ~ 500mL mass fraction, which is added, is in 5% hydrochloric acid, with 300 ~ 400r/min stirring 20 ~
After 30min, 7.0 ~ 8.4g carbon nanotube is added, and 30 ~ 50min is dispersed with 300W ultrasonic echography, obtain carbon nanotube suspension
7.0 ~ 8.4g ammonium persulfate is added into carbon nano tube suspension for liquid, and 300 ~ 400mL mass fraction is 5% hydrochloric acid, in ice-water bath
20 ~ 30min of lower stirring, subsequent vacuum filter are washed with deionized filter residue 3 ~ 5 times, obtain polyaniline-coated carbon nanotube；
(2) the above-mentioned polyaniline-coated carbon nanotube of 3 ~ 5g is weighed, is placed in a vacuum drying oven, is dried at 80 ~ 90 DEG C to constant weight,
It then continues in tube furnace, be heated to 400 ~ 450 DEG C under nitrogen atmosphere with 4 DEG C/min and keep the temperature 2 ~ 3h, continue to be heated to 700
~ 720 DEG C and 1 ~ 2h is kept the temperature, cooled to room temperature obtains nitrogen-doped carbon nanometer pipe；
(3) the above-mentioned nitrogen-doped carbon nanometer pipe of 1 ~ 2g is weighed, is added in 80 ~ 100mL dehydrated alcohol, with the dispersion of 500W ultrasonic echography
95 ~ 98g aluminium powder is added in 15 ~ 20min, stirs 20 ~ 30min with 300 ~ 400r/min, filters after standing 1 ~ 2h, filter residue is placed in
In vacuum oven, dries at 105 ~ 110 DEG C to constant weight, be subsequently filled into ball mill, with 400 ~ 500r/min, 2 ~ 3h of ball milling,
It obtains aluminium and adsorbs nitrogen-doped carbon nanometer pipe composite material；
(4) 50 ~ 60g polyamide nylon 6 is weighed, dry 15 ~ 20h is placed in 80 ~ 90 DEG C of air dry ovens, will be dried
Polyamide nylon 6 and the above-mentioned aluminium of 15 ~ 20g adsorb nitrogen-doped carbon nanometer pipe composite material, 1 ~ 2g silane coupling agent KH-
It is fitted into high-speed mixer after 570 mixing, 5 ~ 8min is stirred with 1500 ~ 2000r/min, obtains mixture；
(5) preheating of mixed material is added twin-screw extrude to after 50 ~ 60 DEG C, is heated to 220 ~ 240 DEG C of melt blendings, mistake
60 meshes, extruding pelletization are cooled to room temperature, and obtain composite material granular, and composite material granular is placed in 105 ~ 110 DEG C of vacuum drying
It in case after dry 2 ~ 3h, is fitted into injection molding machine charging basket, is heated to 200 ~ 250 DEG C, keep 15 ~ 20min of temperature, injection is preheated to 80
In ~ 90 DEG C of molds, compression moulding is cooled to room temperature demoulding, obtains electronic equipment machine shell material.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231587A (en) * | 2014-08-27 | 2014-12-24 | 上海日之升新技术发展有限公司 | Thermoplastic composite material for electromagnetic shielding housings and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104231587A (en) * | 2014-08-27 | 2014-12-24 | 上海日之升新技术发展有限公司 | Thermoplastic composite material for electromagnetic shielding housings and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 氮掺杂碳纳米管/铝基复合材料的制备及性能;何卫等;《材料工程》;20160228;第44卷(第2期);第49-55页 |
| 聚苯胺改性氮掺杂碳纳米管制备及其超级电容器性能;李莉香等;《物理化学学报》;20130131;第29卷(第1期);第111-116页 |
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