CN109897386A - Polycarbonate compositions and its preparation method and application - Google Patents
Polycarbonate compositions and its preparation method and application Download PDFInfo
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- CN109897386A CN109897386A CN201910201350.7A CN201910201350A CN109897386A CN 109897386 A CN109897386 A CN 109897386A CN 201910201350 A CN201910201350 A CN 201910201350A CN 109897386 A CN109897386 A CN 109897386A
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Abstract
The present invention relates to a kind of polycarbonate compositions and its preparation method and application.In terms of mass fraction, the raw material of the polycarbonate compositions includes 0.1 part~99.9 parts of aromatic copolycarbonate-polysiloxane copolymer and 0.1 part~30 parts modified carbon nano-tubes.Wherein, shown in aromatic copolycarbonate-polysiloxane copolymer end group such as following formula (1),‑R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5；Modified carbon nano-tube is polytetrafluoroethylene (PTFE) grafting carbon nanotube.The flame retardant property of the polycarbonate compositions is high.
Description
Technical field
The present invention relates to technical field of composite materials, more particularly to a kind of polycarbonate compositions and preparation method thereof and
Using.
Background technique
Polycarbonate (PC) is a kind of thermoplastic engineering plastic of high comprehensive performance, has certain anti-flammability, but still
It is difficult to meet certain application fields such as television set, computer, the casing of printer and component, transformer coil, automobile component, building
The requirement to PC flame retardant property such as material.Therefore, Chang Tianjia fire retardant is to improve its flame retardant property.Currently used fire retardant can
To be divided into halogen containing flame-retardant and halogen-free flame retardants, halogen containing flame-retardant is gradually used by limitation due to polluting the environment, and nothing
The flame retarding efficiency of halogen fire retardant is low.
Summary of the invention
Based on this, it is necessary to provide a kind of environmentally friendly and high anti-flammability polycarbonate compositions.
A kind of polycarbonate compositions, in terms of mass fraction, the raw material of the polycarbonate compositions includes:
0.1 part~99.9 parts of aromatic copolycarbonate-polysiloxane copolymer；And
0.1 part~30 parts of modified carbon nano-tube；
Wherein, shown in the end group such as following formula (1) of the aromatic copolycarbonate-polysiloxane copolymer,
Wherein ,-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5；The modified carbon nano-tube is poly- four
Vinyl fluoride grafting carbon nanotube.
Above-mentioned polycarbonate compositions include aromatic copolycarbonate-polysiloxane copolymer and modified carbon nano-tube, are changed
Property carbon nanotube be polytetrafluoroethylene (PTFE) grafting carbon nanotube, aromatic copolycarbonate-polysiloxane copolymer and modified carbon nano tube
Pipe cooperates, and modified carbon nano-tube avoids the reunion characteristic of carbon nanotube, can be uniformly dispersed and be promoted whole in resin
The performance uniformity of body composition improves whole anti-flammability.
The viscosity-average molecular weight of the polytetrafluoroethylene (PTFE) is 500000 or more in one of the embodiments,.
Aromatic copolycarbonate-the polysiloxane copolymer is by having such as following formula (3) institute in one of the embodiments,
The polycarbonate of the group shown is copolymerized with the polysiloxanes with the group as shown in following formula (4),
Wherein ,-R3、-R4、-R5、-R6、-R7And-R8One be respectively and independently selected from alkyl and phenyl that carbon atom number is 1~6
Kind ,-R9For containing aliphatic or aromatic organic residue ,-z- is selected from alkylene, the carbon atom that carbon atom number is 1~20
Count one in the alkylidene for 1~20, the cycloalkylidene that carbon atom number is 5~20 and the ring alkylidene that carbon atom number is 5~20
Kind, c and d are respectively 0~4 any integer, any integer that n is 1~500.
- the R in one of the embodiments,9For o- allyl benzene phenolic group (o-Allyl phenol residue),
P- hydroxy styrenes base (p-hydroxystyrene residue) or cloves phenolic group (eugenol residue).
Any integer that the n is 5~150 in one of the embodiments,.
A kind of preparation method of polycarbonate compositions, comprising the following steps:
By raw material melting mixing, the polycarbonate compositions are obtained, wherein the raw material includes 0.1 part~99.9 parts
Aromatic copolycarbonate-polysiloxane copolymer and 0.1 part~30 parts of modified carbon nano-tube；The aromatic polycarbonate
Shown in ester-polysiloxane copolymer end group such as following formula (1),
Wherein ,-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5；
The modified carbon nano-tube is polytetrafluoroethylene (PTFE) grafting carbon nanotube.
The raw material of the polytetrafluoroethylene (PTFE) grafting carbon nanotube includes polytetrafluoroethylene (PTFE) and carbon in one of the embodiments,
Nanotube, wherein the quality of the polytetrafluoroethylene (PTFE) is the 5%~35% of the quality of the carbon nanotube.
The outer diameter of the carbon nanotube is 5nm~20nm in one of the embodiments,；And/or the carbon nanotube
Length is 500 μm~1200 μm.
Polycarbonate compositions made from the preparation method of above-mentioned polycarbonate compositions or above-mentioned polycarbonate compositions
Preparing the application in electronic device.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
The disclosure of invention is more thorough and comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Number herein refers both to mass fraction.
The polycarbonate compositions of one embodiment, in terms of mass fraction, the raw material of polycarbonate compositions includes:
0.1 part~99.9 parts of aromatic copolycarbonate-polysiloxane copolymer；And
0.1 part~30 parts of modified carbon nano-tube.
Shown in aromatic copolycarbonate-polysiloxane copolymer end group such as following formula (1):
Wherein ,-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5.Preferably ,-R1Be carbon atom number be 4
~12 alkyl；And/or any integer that a is 1~3.It is, of course, understood that-R1It can be straight-chain, be also possible to
Branched, binding site can be m, p, o.Further ,-R1For methyl, tert-butyl, tertiary pentyl, nonyl or 12
Alkyl.
In one of the embodiments, aromatic copolycarbonate-polysiloxane copolymer mass fraction be 50 parts~
99.5 parts.Preferably, aromatic copolycarbonate-polysiloxane copolymer mass fraction is 50 parts~90 parts.Further preferably
Ground, aromatic copolycarbonate-polysiloxane copolymer mass fraction are 50 parts, 83 parts or 90 parts.
Aromatic copolycarbonate-polysiloxane copolymer is as having as shown in following formula (3) in one of the embodiments,
The polycarbonate of group is copolymerized with the polysiloxanes with the group as shown in following formula (4),
Wherein ,-R3、-R4、-R5、-R6、-R7And-R8One be respectively and independently selected from alkyl and phenyl that carbon atom number is 1~6
Kind ,-R9For containing aliphatic or aromatic organic residue ,-z- is selected from alkylene, the carbon atom that carbon atom number is 1~20
Count one in the alkylidene for 1~20, the cycloalkylidene that carbon atom number is 5~20 and the ring alkylidene that carbon atom number is 5~20
Kind, c and d are respectively 0~4 any integer, any integer that n is 1~500.Further ,-R3、-R4、-R5、-R6、-R7And-
R8It is each independently methyl.-R9It is selected from o- allyl benzene phenolic group (o-Allyl phenol residue), p- hydroxy styrenes base
One of (p-hydroxystyrene residue) and cloves phenolic group (eugenol residue).Preferably ,-z- is different
Propylidene.C and d is respectively 0；And/or any integer that n is 5~150.
Aromatic copolycarbonate-polysiloxane copolymer structure is as follows in one of the embodiments:
.Wherein, R10The alkyl for being 2~3 for carbon atom number, m are that 2~4, x is 5~7, and copolymer end group is above-mentioned
(1) structure.
Modified carbon nano-tube is polytetrafluoroethylene (PTFE) grafting carbon nanotube.The raw material of polytetrafluoroethylene (PTFE) grafting carbon nanotube includes
Carbon nanotube and polytetrafluoroethylene (PTFE).Further, the quality of polytetrafluoroethylene (PTFE) is the 5%~35% of the quality of carbon nanotube.Into
One step, the quality of polytetrafluoroethylene (PTFE) are the 10%~30% of the quality of carbon nanotube.It is further preferred that the matter of polytetrafluoroethylene (PTFE)
Amount is 10%, 15%, 21% or the 27% of the quality of carbon nanotube.The viscosity of polytetrafluoroethylene (PTFE) in one of the embodiments,
Average molecular weight is 500000 or more.Preferably, the viscosity-average molecular weight of polytetrafluoroethylene (PTFE) 500000~10000000 it
Between.The outer diameter of carbon nanotube is 5nm~20nm in one of the embodiments,；And/or the length of carbon nanotube be 500 μm~
1200μm.Preferably, the outer diameter of carbon nanotube is 4nm~15nm；And/or the length of carbon nanotube is 700 μm~1000 μm.
Verified, above-mentioned polycarbonate compositions have good antistatic effect and mechanical strength.
The preparation method of above-mentioned polycarbonate compositions, comprising the following steps:
S110, aromatic copolycarbonate-polysiloxane copolymer is prepared.
Specifically, aromatic copolycarbonate-polysiloxane copolymer is by aromatic copolycarbonate and polysiloxane copolymer
For the copolymer of main structure.It further, is the aromatic copolycarbonate copolymer being made of aromatic copolycarbonate, and with poly-
For silicone copolymers for main structure and with o- aryl phenolic group, p- hydroxy styrenes base or clove tree phenolic group are end group
Polymer in a solvent, has and carries out polymerization reaction in the environment of catalyst, and it is anti-finally to terminate polymerization using end stopping agent
It answers.Further, the structural formula of end stopping agent is shown below:
Wherein ,-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5.Preferably ,-R1Be carbon atom number be 4
~12 alkyl；And/or any integer that a is 1~3.It is, of course, understood that-R1It can be straight-chain, be also possible to
Branched, binding site can be m, p, o.Further ,-R1For methyl, tert-butyl, tertiary pentyl, nonyl or 12
Alkyl.
Further, aromatic copolycarbonate quasi polymer used in aromatic copolycarbonate-polysiloxane copolymer
It is reacted with carbonate precursors such as phosgene or carbonate products by divalent phenol and is made in part.One embodiment wherein
In, shown in the structure of divalent phenol such as following formula (6):
Wherein-R3With-R4,-z-, c and d all as hereinbefore.Further, divalent phenol is (4- hydroxy benzenes) alkane.Specifically
Ground, divalent phenol are selected from 4,4 '-dihydroxybiphenyls, double (4- hydroxy benzenes) methane of 1,1-, double (4- hydroxy benzenes) ethane of 1,1-
And 2, one of double (4-hydroxyphenyl)propane of 2-.Preferably, divalent phenol 2, the double (4-hydroxyphenyl)propane of 2- (the third two
Phenol).
In one embodiment, carbonats compound is selected from one of diethyl carbonate and dialkyl carbonic ester.
Specifically, carbonats compound is selected from one of diphenyl carbonate, dimethyl carbonate and diethyl carbonate.
S120, modified carbon nano-tube is prepared.
Specifically, carbon nanotube is first prepared using CVD (chemical vapor deposition) method, polytetrafluoroethylene (PTFE) is then grafted to carbon
Then the polytetrafluoroethylene (PTFE) for being grafted to carbon nano tube surface further polymerize, obtains modified carbon nano-tube by nanotube surface.?
In one embodiment, the quality of polytetrafluoroethylene (PTFE) is the 5%~35% of the quality of carbon nanotube.Further, polytetrafluoroethyl-ne
The quality of alkene is the 10%~30% of the quality of carbon nanotube.It is further preferred that the quality of polytetrafluoroethylene (PTFE) is carbon nanotube
Quality 10%, 15%, 21% or 27%.The viscosity-average molecular weight of polytetrafluoroethylene (PTFE) exists in one of the embodiments,
500000 or more.Preferably, the viscosity-average molecular weight of polytetrafluoroethylene (PTFE) is between 500000~10000000.One wherein
In embodiment, the outer diameter of carbon nanotube is 5nm~20nm；And/or the length of carbon nanotube is 500 μm~1200 μm.Preferably,
The outer diameter of carbon nanotube is 4nm~15nm；And/or the length of carbon nanotube is 700 μm~1000 μm.
It further, is high energy ultraviolet light irradiation method by the method that polytetrafluoroethylene (PTFE) is grafted to carbon nano tube surface.Specifically
Solid polytetrailuoroethylene and carbon nanotube powder are placed under the high energy ultraviolet lamp that wavelength is 100~256nm simultaneously, and protect by ground
Lamp and the distance between solid polytetrailuoroethylene and carbon nanotube powder are held within 30mm.After completing surface grafting modification,
The polytetrafluoroethylene (PTFE) of carbon nano tube surface is further polymerize on this basis, to increase carbon nano tube surface polytetrafluoro
The molecular weight of ethylene.Preferably, the molecular weight of the polytetrafluoroethylene (PTFE) of modified carbon nano tube pipe surface is 500000 or more.It is further excellent
Selection of land, between the molecular weight 500000~10000000 of the polytetrafluoroethylene (PTFE) of modified carbon nano tube pipe surface.By in carbon nanotube
On the one hand surface grafting polytetrafluoroethylene (PTFE) macromolecular increases the mechanics transmitting between carbon nanotube and resinous substrates, another party
Face increases the anti-flammability of entire product；Meanwhile the mechanical strength that the strong mechanical performance of carbon nanotube itself closes entire composition
Have and is significantly promoted.The purity of carbon nanotube is 99.9% or more.It is, of course, understood that this field can also be used
Other common preparation methods prepare modified carbon nano-tube.
S130, by aromatic copolycarbonate-polysiloxane copolymer, modified carbon nano-tube melting mixing, obtain poly- carbonic acid
Ester composition.
The temperature of melting mixing is 40 DEG C~120 DEG C in one of the embodiments, and the time is 1.2h~2.5h.It is preferred that
Ground, the temperature of melting mixing are 60 DEG C~100 DEG C, and the time is 1.5h~2h.Further, the temperature of melting mixing be 65 DEG C~
85 DEG C, the time is 1.7h~2h.
The preparation method of above-mentioned polycarbonate compositions is simple and easy.
Above-mentioned polycarbonate compositions are preparing the application in electronic device.
Specifically, above-mentioned polycarbonate compositions are preparing the application in electronic product.
Above-mentioned polycarbonate compositions are preparing the application in auto parts and components in one of the embodiments,.
Above-mentioned polycarbonate compositions in the shell for preparing electronic product or prepare electronics production in one of the embodiments,
Application in the part of product.
Specific embodiment
It is described in detail below in conjunction with specific embodiment.Following embodiment such as non-specified otherwise does not then include except can not
The other components outside impurity avoided.It in embodiment if not otherwise indicated using drug and instrument, is this field conventional selection.
Test method without specific conditions in embodiment, according to normal conditions, such as condition described in document, books or life
The method for producing manufacturer's recommended is realized.
Embodiment 1
(1) preparation of aromatic copolycarbonate-polysiloxane copolymer (PC-PDMS) is divided into following several steps:
1. preparing polycarbonate oligomer.The synthetic route of polycarbonate oligomer is as follows:
The specific steps of polycarbonate oligomer: it is dissolved in the sodium hydrate aqueous solution of 400L 5% (mass percent)
The third diphenol A of 60kg, is made the sodium hydrate aqueous solution of the third diphenol A.Later by the aqueous solution with the flow and dichloro of 138L/h
Methane (flow of 69L/h) and phosgene (flow of 10.7kg/h) hybrid reaction continue 3.5 hours.By the pH of mixed after reaction
Value is formulated to 10.5, removes water phase and retains methylene chloride phase (220L), to obtain polycarbonate oligomerCompound corresponding to letter A i.e. in synthetic route chart.?In, m 3.
2. preparing polysiloxane polymer.The synthetic route for preparing polysiloxane polymer is as follows:
Prepare the specific steps of polysiloxane polymer: by 1483g octamethylcy-clotetrasiloxane, 1,1,3,3- tetramethyl of 96g
86% sulfuric acid of base disiloxane and 35g are mixed, and are stirred at room temperature 17 hours.Oily phase is separated later, and 25g is added
It is stirred 1 hour after sodium hydroxide.It after filtering, is evaporated in vacuo at 150 DEG C, 3torr, obtains oil after low-boiling point material of going out
Shape object.Prepare the 2- propenyl phenol of 60g and platinum chloride-ethanol complex mixture of 0.0014g, in the mixture, is added
Above-mentioned grease 294g, and stirred 3 hours under conditions of being maintained at 90 DEG C~115 DEG C.Product is taken out with methylene chloride
Out, and with 80% alcohol it cleans three times, removes superfluous 2- propenyl phenol, product is just dried with anhydrous sodium sulfate,
Heating removing solvent is carried out for 115 DEG C in vacuum, to obtain the polysiloxane polymer that end group is phenolic groupCompound corresponding to letter b i.e. in synthetic route.?In, n 30.
3. preparing fragrant adoption with the 182g polysiloxane polymer B 2. obtained with the polycarbonate oligomer A 1. obtained
Polycarbonate-polysiloxane copolymer.Wherein.Synthetic route is as follows:
Specific steps are as follows: the above-mentioned 182g polysiloxane polymer 2. obtained is dissolved with the methylene chloride of 2L, and
It is mixed with the above-mentioned polycarbonate oligomer 10L 1. obtained.Here, sodium hydroxide 26g is dissolved in 1L water, and it is added
Triethylamine 5.7mL is stirred to react 1 hour at room temperature.After reaction, the sodium hydroxide water of 5.2 mass % is added in the above system
Solution 5L, and it is dissolved with the third diphenol of 600g A, it is stirred at room temperature instead after methylene chloride 8L and p- dodecylphenol 96g is added
It answers 2 hours.After reaction, 5L methylene chloride is added, then successively uses water 5L, 0.03N sodium hydrate aqueous solution 5L progress alkali cleaning is net,
It is net that 0.2N hydrochloric acid 5L carries out pickling, then is cleaned 2 times with 5L water, finally removes methylene chloride, and vacuum drying 24 is small at 120 DEG C
When, aromatic copolycarbonate-polysiloxane copolymer of sheet is obtained, the aromatic copolycarbonate-polysiloxane copolymer
Structure is as follows:
, wherein x is 5, m 3, n 30.X is 5.
(2) modified carbon nano-tube is prepared
The pure nano-carbon tube CNT-1 of non-surface modification, wherein 5~20nm of carbon nanotube diameter, length are 500~1200
μm, purity is 99.9% or more.
The modified carbon nano-tube CNT-2 of surface grafting polytetrafluoroethylene (PTFE): preparing two pieces of substrates, can be glass system, can also
Think silicon wafer.A deposition on substrate carbon nanotube powder wherein, in another deposition on substrate polytetrafluorethylepowder powder,
In, the molecular weight of polytetrafluoroethylene (PTFE) is 500000~1000000, and the quality of polytetrafluoroethylene (PTFE) is the 5% of the quality of carbon nanotube.
Carbon nanotube diameter 12.1nm, length are 760 μm, and purity is 99.9% or more.After this by two substrates it is placed side by side in
Under high energy ultraviolet lamp, the irradiation power of high energy UV is 20mW, and the illumination wavelength lambda of high energy UV is 256nm, in nitrogen
Processing 20min is carried out under atmosphere, obtains the modified carbon nano-tube CNT-2 of surface grafting polytetrafluoroethylene (PTFE).
The modified carbon nano-tube CNT-3 of surface grafting polytetrafluoroethylene (PTFE): the carbon modified of surface grafting polytetrafluoroethylene (PTFE) is received
Mitron CNT-2 is dissolved in tetrafluoroethene aqueous solution, in the presence of sodium, potassium or peroxy-disulfuric acid amine, in the pressure of 500kPa
Under, in the case where 150 DEG C of temperature, polymerization reaction is carried out again, the reaction time 2 hours, obtains surface grafting polytetrafluoroethylene (PTFE)
Modified carbon nano-tube CNT-3.The molecular weight of the polytetrafluoroethylene (PTFE) of the multi-walled carbon nanotube CNT-3 of surface grafting polytetrafluoroethylene (PTFE) exists
Between 80000~350000.
2~embodiment of embodiment 9
(1) raw material of embodiment 2~9 is weighed according to the component of table 1, wherein aromatic copolycarbonate-polysiloxanes copolymerization
Object and modified carbon nano-tube are all from embodiment 1.The molecular weight of polytetrafluoroethylene (PTFE) is 500000~1000000 in table 1.It will be fragrant
Race's polycarbonate-polysiloxane copolymer and modified carbon nano-tube CNT-2 carry out melting mixing at 280 DEG C, are then granulated dry
It is dry, it is compressed into tablet form, obtains the polycarbonate compositions of each embodiment.
(2) polycarbonate compositions of step (1) are detected, wherein according to ATM D256 canonical measure impact resistance
Intensity；According to ASTMD-790 canonical measure bending modulus；Anti-flammability is measured according to UL94 combustion experiment；It is surveyed according to JIS K7210
It measures MI (Melt Index, melt index).The test result of each embodiment is as shown in table 1.
Table 1
As shown in Table 1, the polycarbonate compositions of embodiment 2~6 has flame retardant property, and volume intrinsic resistance value
Also reduced, antistatic effect also has preferable promotion.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of polycarbonate compositions, which is characterized in that in terms of mass fraction, the raw material packet of the polycarbonate compositions
It includes:
0.1 part~99.9 parts of aromatic copolycarbonate-polysiloxane copolymer；And
0.1 part~30 parts of modified carbon nano-tube；
Wherein, shown in the end group such as following formula (1) of the aromatic copolycarbonate-polysiloxane copolymer,
-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5；The modified carbon nano-tube is polytetrafluoroethylene (PTFE)
Grafting carbon nanotube.
2. polycarbonate compositions according to claim 1, which is characterized in that-the R1Selected from methyl, tert-butyl, uncle penta
One of base, nonyl and dodecyl.
3. polycarbonate compositions according to claim 1, which is characterized in that the viscosity average mark of the polytetrafluoroethylene (PTFE)
Son amount is 500000 or more.
4. polycarbonate compositions according to claim 1, which is characterized in that the poly- silicon oxygen of aromatic copolycarbonate-
Alkyl copolymer is as the polycarbonate with the group as shown in following formula (3) and with the poly- silicon oxygen of the group as shown in following formula (4)
Alkane is copolymerized,
Wherein ,-R3、-R4、-R5、-R6、-R7And-R8It is respectively and independently selected from alkyl and phenyl that carbon atom number is 1~6
One kind ,-R9For containing aliphatic or aromatic organic residue, it is former that-z- is selected from the alkylene that carbon atom number is 1~20, carbon
In the ring alkylidene that the cycloalkylidene and carbon atom number that alkylidene that subnumber is 1~20, carbon atom number are 5~20 are 5~20
One kind, c and d are respectively 0~4 any integer, any integer that n is 1~500.
5. polycarbonate compositions according to claim 4, which is characterized in that-the R9Selected from o- allyl benzene phenolic group,
One of p- hydroxy styrenes base and cloves phenolic group.
6. polycarbonate compositions according to claim 4, which is characterized in that any integer that the n is 5~150.
7. a kind of preparation method of polycarbonate compositions, which comprises the following steps:
By raw material melting mixing, the polycarbonate compositions are obtained, wherein the raw material includes 0.1 part~99.9 parts of virtue
Fragrant race's polycarbonate-polysiloxane copolymer and 0.1 part~30 parts of modified carbon nano-tube, the aromatic copolycarbonate-are poly-
Shown in the end group of silicone copolymers such as following formula (1),
Wherein ,-R1It is the alkyl that carbon atom number is 1~35, any integer that a is 0~5；The modified carbon nano-tube is polytetrafluoro
Vinyl Graft carbon nanotube.
8. the preparation method of polycarbonate compositions according to claim 7, which is characterized in that the polytetrafluoroethylene (PTFE) connects
The raw material for preparing of branch carbon nanotube includes polytetrafluoroethylene (PTFE) and carbon nanotube, wherein the quality of the polytetrafluoroethylene (PTFE) is described
The 5%~35% of the quality of carbon nanotube.
9. the preparation method of polycarbonate compositions according to claim 8, which is characterized in that outside the carbon nanotube
Diameter is 5nm~20nm；And/or the length of the carbon nanotube is 500 μm~1200 μm.
10. the described in any item polycarbonate compositions of claim 1~6 or the described in any item poly- carbonic acid of claim 7~9
Polycarbonate compositions made from the preparation method of ester composition are preparing the application in electronic device.
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