CN109943051A - A kind of makrolon material and preparation method thereof with electromagnetic shielding action - Google Patents
A kind of makrolon material and preparation method thereof with electromagnetic shielding action Download PDFInfo
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- CN109943051A CN109943051A CN201910218922.2A CN201910218922A CN109943051A CN 109943051 A CN109943051 A CN 109943051A CN 201910218922 A CN201910218922 A CN 201910218922A CN 109943051 A CN109943051 A CN 109943051A
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- electromagnetic shielding
- pa6t
- mwnt
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- shielding action
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Abstract
The present invention relates to makrolon material preparation technical fields, specifically disclose a kind of makrolon material and preparation method thereof with electromagnetic shielding action.The preparation method of the polycarbonate of the electromagnetic shielding action comprises the following steps: (1) carbon nanotube and nylon 6T being added in organic solvent, ultrasound, it is placed in container after being uniformly dispersed and is poured film forming, 1~2h is dried in vacuo at 55~65 DEG C, obtains PA6T/MWNT composite membrane；(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, obtain PA6T/MWNT/Ni composite membrane；(3) PA6T/MWNT/Ni composite membrane and the polycarbonate melt blending at 230~250 DEG C are taken, is squeezed out by extrusion device up to the makrolon material with electromagnetic shielding action.Experiment shows that the makrolon material that the present invention is prepared has excellent mechanical property, electric conductivity and electromagnet shield effect.
Description
Technical field
The present invention relates to makrolon material preparation technical fields, and in particular to a kind of poly- carbon with electromagnetic shielding action
Acid esters material and preparation method thereof.
Background technique
Polycarbonate (abbreviation PC) is the high molecular polymer in strand containing carbonate group, is widely used in electricity
The industrial circles such as son, electric appliance and communication equipment.When polycarbonate plastic is for electronics, electrical and communication equipment field,
Since electronic component is to extraneous interference, electromagnetic wave can be acted on electronic component, generate disturbed phenomenon.It is dry in order to reduce electromagnetism
Phenomenon is disturbed, corresponding equipment generallys use component made of conductive material and shields to electric field magnetic field.Therefore a kind of tool is developed
There is the polycarbonate of electromagnetic shielding action, the polycarbonate especially with High Performance Shielding effect has wide application
Prospect.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of systems of makrolon material with electromagnetic shielding action
Preparation Method has excellent effectiveness by the makrolon material that this method is prepared.
Above-mentioned technical problem to be solved by this invention, is achieved by the following technical programs:
A kind of preparation method of the makrolon material with electromagnetic shielding action, it includes following steps:
(1) carbon nanotube and nylon 6T are added in organic solvent, ultrasound is placed in container after being uniformly dispersed and is poured
Film forming is dried in vacuo 1~2h at 55~65 DEG C, obtains PA6T/MWNT composite membrane；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, it is compound to obtain PA6T/MWNT/Ni
Film；
(3) PA6T/MWNT/Ni composite membrane and the polycarbonate melt blending at 230~250 DEG C are taken, extrusion device is passed through
It squeezes out up to the makrolon material with electromagnetic shielding action.
Preferably, the amount ratio of carbon nanotube and nylon 6T described in step (1) is 1:3~5.
Preferably, carbon nanotube described in step (1) is multi-walled carbon nanotube；The organic solvent is chloroform.
Preferably, the electroplate liquid containing nickel salt described in step (2) includes following ingredient: 100~120g/L of nickel sulfate；
30~40g/L of sodium sulphate；30~40g/L of sodium citrate；10~20g/L of sodium acetate；10~20g/L of sodium hypophosphite.
Most preferably, the electroplate liquid containing nickel salt described in step (2) includes following ingredient: nickel sulfate 110g/L；Sulphur
Sour sodium 35g/L；Sodium citrate 34g/L；Sodium acetate 15g/L；Sodium hypophosphite 15g/L.
It is further preferred that the electroplate liquid containing nickel salt, which contains, includes 20~30g/L of adjuvant, the adjuvant
It is prepared via a method which to obtain:
By Dodecyl Dimethyl Amine and 1, the chloro- 2- propyl alcohol of 3- bis- is that 2:1 is dissolved in organic solvent in molar ratio, then plus
Enter catalyst, react 12 at 110~140 DEG C~for 24 hours, it is concentrated and dried up to the adjuvant.
It is further preferred that organic solvent described in adjuvant preparation process is methanol, the catalyst is iodine
Change potassium；The amount ratio of the Dodecyl Dimethyl Amine and 1, the chloro- 2- propyl alcohol total weight of 3- bis- and organic solvent is 1g:2
~5mL；The weight ratio of the Dodecyl Dimethyl Amine and 1, the chloro- 2- propyl alcohol total weight of 3- bis- and catalyst is 100:1
~2.
Preferably, the plating conditions in step (2) are as follows: control current density be 3~4ASD, electroplating time be 20~
40min。
Most preferably, the plating conditions in step (2) are as follows: control current density is 3.5ASD, electroplating time 30min.
Preferably, the amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 1~5:100 in step (3).
Preferably, extrusion device described in step (3) is double screw extruder.
The present invention also provides a kind of polycarbonate materials prepared by the preparation method with electromagnetic shielding action
Material.
The utility model has the advantages that (1) present invention, which is first passed through, wraps up multi-walled carbon nanotube (MWNT) with nylon 6T (PA6T), it is total with solution
Mixed mode prepares PA6T/MWNT composite membrane, then plates one layer of nickel material in PA6T/MWNT composite membrane by way of plating
PA6T/MWNT/Ni composite membrane is prepared, is had by PA6T/MWNT/Ni composite membrane and the preparation of polycarbonate (PC) melt blending
The makrolon material of electromagnetic shielding action；From the above, it can be seen that the present invention provides a kind of preparation sides of completely new makrolon material
Method；Its makrolon material being prepared also has completely new raw material composition.(2) processing of the nylon 6T used by the present invention
Temperature ratio PC high, therefore PA6T is used to pass through the re-plating that first forms a film using PC as continuous phase as the reinforced phase of carried metal Ni
Mode improves filler in the dispersibility of polymer, realizes filler in the polymolecularity of polymer, greatly reduces uneven because dispersing
Caused by electric conductivity relaxation phenomenon, make final material strip surface high conduction performance.(3) using MWNT and W metal as leading jointly
Electric filler forms binary built filler by bridge of PA6T, builds conductive network body jointly by solution blending and electroplating technology
System realizes low sizing high conduction performance in the polymer, forms the high electromagnetic shielding network system.(4) in addition, in electroplating process
In, it joined the adjuvant of completely new approach synthesis in electroplate liquid, make the electromagnetic screen of makrolon material being prepared
The effect of covering further increases.
Specific embodiment
The present invention is explained further below in conjunction with specific embodiment, but embodiment does not do any type of limit to the present invention
It is fixed.
The preparation of 1 makrolon material of embodiment
(1) chlorine is added in multi-walled carbon nanotube and nylon 6T (PA6T for being RA230NK purchased from the Mitsui company trade mark)
In imitative, ultrasound is placed in container after being uniformly dispersed and is poured film forming, is dried in vacuo 1h at 60 DEG C, it is compound to obtain PA6T/MWNT
Film；
The amount ratio of multi-walled carbon nanotube described in the step and nylon 6T and chloroform are 1g:4g:30mL；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, it is compound to obtain PA6T/MWNT/Ni
Film；
Electroplate liquid described in the step containing nickel salt includes following ingredient: nickel sulfate 110g/L；Sodium sulphate 35g/L；
Sodium citrate 34g/L；Sodium acetate 15g/L；Sodium hypophosphite 15g/L；Plating conditions are as follows: control current density is 3.5ASD, plating
Time is 30min；
(3) PA6T/MWNT/Ni composite membrane and polycarbonate (the poly- carbon for being 1302HP-09 purchased from the LG Corp of South Korea trade mark are taken
Acid esters) melt blending at 240 DEG C, it is squeezed out by double screw extruder up to the polycarbonate material with electromagnetic shielding action
Material；
The amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 3:100 in the step.
The preparation of 2 makrolon material of embodiment
(1) chlorine is added in multi-walled carbon nanotube and nylon 6T (PA6T for being RA230NK purchased from the Mitsui company trade mark)
In imitative, ultrasound is placed in container after being uniformly dispersed and is poured film forming, is dried in vacuo 1.5h at 55 DEG C, and it is multiple to obtain PA6T/MWNT
Close film；
The amount ratio of multi-walled carbon nanotube described in the step and nylon 6T and chloroform are 1g:3g:40mL；；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, it is compound to obtain PA6T/MWNT/Ni
Film；
Electroplate liquid described in the step containing nickel salt includes following ingredient: nickel sulfate 100g/L；Sodium sulphate 40g/L；
Sodium citrate 40g/L；Sodium acetate 10g/L；Sodium hypophosphite 10g/L；Plating conditions are as follows: control current density is 4ASD, when plating
Between be 40min；
(3) PA6T/MWNT/Ni composite membrane and polycarbonate (the poly- carbon for being 1302HP-09 purchased from the LG Corp of South Korea trade mark are taken
Acid esters) melt blending at 240 DEG C, it is squeezed out by double screw extruder up to the polycarbonate material with electromagnetic shielding action
Material；
The amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 2:100 in the step.
The preparation of 3 makrolon material of embodiment
(1) chlorine is added in multi-walled carbon nanotube and nylon 6T (PA6T for being RA230NK purchased from the Mitsui company trade mark)
In imitative, ultrasound is placed in container after being uniformly dispersed and is poured film forming, is dried in vacuo 1h at 65 DEG C, it is compound to obtain PA6T/MWNT
Film；
The amount ratio of multi-walled carbon nanotube described in the step and nylon 6T and chloroform are 1g:5g:40mL；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, it is compound to obtain PA6T/MWNT/Ni
Film；
Electroplate liquid described in the step containing nickel salt includes following ingredient: nickel sulfate 120g/L；Sodium sulphate 30g/L；
Sodium citrate 30g/L；Sodium acetate 20g/L；Sodium hypophosphite 20g/L；Plating conditions are as follows: control current density is 3ASD, when plating
Between be 40min；
(3) PA6T/MWNT/Ni composite membrane and polycarbonate (the poly- carbon for being 1302HP-09 purchased from the LG Corp of South Korea trade mark are taken
Acid esters) melt blending at 240 DEG C, it is squeezed out by double screw extruder up to the polycarbonate material with electromagnetic shielding action
Material；
The amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 4:100 in the step.
The preparation of 4 makrolon material of embodiment
(1) chlorine is added in multi-walled carbon nanotube and nylon 6T (PA6T for being RA230NK purchased from the Mitsui company trade mark)
In imitative, ultrasound is placed in container after being uniformly dispersed and is poured film forming, is dried in vacuo 1h at 60 DEG C, it is compound to obtain PA6T/MWNT
Film；
The amount ratio of multi-walled carbon nanotube described in the step and nylon 6T and chloroform are 1:4:25mL；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, it is compound to obtain PA6T/MWNT/Ni
Film；
Electroplate liquid described in the step containing nickel salt includes following ingredient: nickel sulfate 110g/L；Sodium sulphate 35g/L；
Sodium citrate 34g/L；Sodium acetate 15g/L；Sodium hypophosphite 15g/L；Adjuvant 15g/L；Plating conditions are as follows: controlling current density is
3.5ASD, electroplating time 30min；
The adjuvant is prepared via a method which to obtain: by Dodecyl Dimethyl Amine and 1, the chloro- 2- third of 3- bis-
Alcohol is that 2:1 is dissolved in methanol in molar ratio, and catalyst potassium iodide is then added, reacts 16h at 130 DEG C, is concentrated and dried up to institute
The adjuvant stated；The amount ratio of the Dodecyl Dimethyl Amine and 1, the chloro- 2- propyl alcohol total weight of 3- bis- and methanol is 1g:
4mL；The Dodecyl Dimethyl Amine and 1, the chloro- 2- propyl alcohol total weight of 3- bis- and the weight ratio of catalyst potassium iodide are
100:1.5；
(3) PA6T/MWNT/Ni composite membrane and polycarbonate (the poly- carbon for being 1302HP-09 purchased from the LG Corp of South Korea trade mark are taken
Acid esters) melt blending at 240 DEG C, it is squeezed out by double screw extruder up to the polycarbonate material with electromagnetic shielding action
Material；
The amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 3:100 in the step.
Embodiment 4 the difference from embodiment 1 is that, the electroplate liquid in embodiment 1 is added without adjuvant, and embodiment 4
Adjuvant is added in electroplate liquid.
Experimental example 1
Test bars are made referring to following standard in the makrolon material that Examples 1 to 4 is prepared and carry out correlation
Performance test.
Reference standard ASTM D638 tests tensile strength (23 DEG C)；Referring to ASTM D790 tested for flexural modulus；Reference
ASTM D256 Izod notched impact strength (23 DEG C)；Its sheet resistance is tested using sheet resistance tester；Referring to ASTM
D4935 standard testing electromagnetic shielding action；Specific test effect is shown in Table 1.
The performance test results of 1. makrolon material of table
From 1 performance test data of table can be seen that makrolon material that Examples 1 to 4 is prepared have it is excellent
Mechanical property, electric conductivity and electromagnet shield effect.The especially makrolon material that is prepared of embodiment 4, electromagnetism
Shield effectiveness is significantly larger than the makrolon material that Examples 1 to 3 is prepared, and can be applied to electromagnetic shielding requirements height
Application field；This also illustrates the adjuvant that the addition present invention is prepared in the electroplate liquid in plating step, can be into one
The electromagnet shield effect for the makrolon material being prepared is substantially improved in step.
Claims (8)
1. a kind of preparation method of the makrolon material with electromagnetic shielding action, which is characterized in that comprise the following steps:
(1) carbon nanotube and nylon 6T are added in organic solvent, ultrasound is placed in container after being uniformly dispersed and pours into
Film is dried in vacuo 1~2h at 55~65 DEG C, obtains PA6T/MWNT composite membrane；
(2) PA6T/MWNT composite membrane is placed in the electroplate liquid containing nickel salt and is electroplated, obtain PA6T/MWNT/Ni composite membrane；
(3) PA6T/MWNT/Ni composite membrane and the polycarbonate melt blending at 230~250 DEG C are taken, is squeezed out by extrusion device
Up to the makrolon material with electromagnetic shielding action.
2. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
The amount ratio of carbon nanotube described in step (1) and nylon 6T are 1:3~5.
3. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
Carbon nanotube described in step (1) is multi-walled carbon nanotube；The organic solvent is chloroform.
4. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
Electroplate liquid containing nickel salt described in step (2) includes following ingredient: 100~120g/L of nickel sulfate；Sodium sulphate 30~
40g/L；30~40g/L of sodium citrate；10~20g/L of sodium acetate；10~20g/L of sodium hypophosphite；
Most preferably, the electroplate liquid containing nickel salt described in step (2) includes following ingredient: nickel sulfate 110g/L；Sodium sulphate
35g/L；Sodium citrate 34g/L；Sodium acetate 15g/L；Sodium hypophosphite 15g/L.
5. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
Plating conditions in step (2) are as follows: control current density is 3~4ASD, and electroplating time is 20~40min；
Most preferably, the plating conditions in step (2) are as follows: control current density is 3.5ASD, electroplating time 30min.
6. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
The amount ratio of PA6T/MWNT/Ni composite membrane and polycarbonate is 1~5:100 in step (3).
7. the preparation method of the makrolon material according to claim 1 with electromagnetic shielding action, which is characterized in that
Extrusion device described in step (3) is double screw extruder.
8. the polycarbonate material with electromagnetic shielding action that the described in any item preparation methods of claim 1~7 are prepared
Material.
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