CN103897368B - A kind of conductive polycarbonate composites and goods thereof and preparation method - Google Patents
A kind of conductive polycarbonate composites and goods thereof and preparation method Download PDFInfo
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- CN103897368B CN103897368B CN201210585786.9A CN201210585786A CN103897368B CN 103897368 B CN103897368 B CN 103897368B CN 201210585786 A CN201210585786 A CN 201210585786A CN 103897368 B CN103897368 B CN 103897368B
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Abstract
The present invention discloses a kind of conductive polycarbonate composites and goods thereof and preparation method.Described conductive polycarbonate composites comprises the component calculated by weight as follows: polycarbonate 65 ~ 85 parts; Polyester 1 ~ 10 part; Toughner 0 ~ 3 part; Carbon black A5 ~ 15 part; Black B 3 ~ 10 parts; Auxiliary agent 0 ~ 1 part; Wherein, total number of carbon black A and black B is no less than 10 parts; Described carbon black A is that specific surface area is at 10 ~ 40m
2the carbon black of/g; Described black B is oil-absorption(number) is 130 ~ 400cm
3/ 100g.The preparation method of described conductive polycarbonate composites, for after polycarbonate, polyester, toughner, carbon black, oxidation inhibitor being mixed in proportion, to melt extrude, granulation at the temperature of 230 ~ 260 DEG C, obtains described conductive polycarbonate composites.It is in the application prospect having the field of high request to have to conductivity of composite material, toughness and surface property simultaneously.
Description
Technical field
The present invention relates to conductive polymers field, particularly a kind of conductive polycarbonate composites and goods thereof and preparation method.Background technology
Existing SMT assembling uses carrier band as holding and the instrument of transport electronic components usually.In order to prevent electrostatic damage electronic component, the carrier band of use must have electroconductibility.In order to prepare electroconductibility carrier band, the carbon black filled polycarbonate material of a large amount of use.In plastic substrate, adding conductive filler material, to prepare conductive composite polymer be common, and carbon black is cheap and be widely used with it.Carbon black filler is filled in polymkeric substance, realizes the transformation of plastics electrical property from insulating to conducting electricity.But a large amount of existence of carbon black in polymeric matrix, can reduce the performance of matrix material, especially mechanical property greatly, and carbon black causes extrusion moulding product surface imperfection the dispersion of material is uneven, produces the bad and pit that causes of dispersion.Miniaturization and the high speed installation requirement of electronic component are more and more higher, propose stricter requirement to the performance of carrier band, and mechanical property and the extrusion moulding product surface finish of corresponding material are particularly crucial.
Chinese patent CN101208389A discloses a kind of for conducting electricity the carbon black filled polycarbonate of carrier band, uses poly-alkyl carbonate can obtain high tenacity as impact modifying agent and the carrier band of low gaseous volatilization.Chinese patent CN1637069A discloses a kind of method using two kinds of different oil-absorption(number) (DBP) carbon blacks accurately to control resin combination electroconductibility.But, when the addition of graphitized carbon black is excessive, easily counter productive is brought to toughness and surface property, and the DBP of graphitized carbon black is higher, in polycarbonate, has the trend of more difficult dispersion.
Summary of the invention
Goal of the invention of the present invention, being to overcome the deficiencies in the prior art, providing a kind of conductive polycarbonate composites, this conductive polycarbonate composites has high toughness and electroconductibility, has high surface quality simultaneously.
Another object of the present invention is to provide the goods be made up of described conductive polycarbonate composites.
Another object of the present invention is to provide the conduction be made up of described conductive polycarbonate composites carrier band.
Another object of the present invention is to the preparation method providing described conductive polycarbonate composites to make.
A kind of conductive polycarbonate composites, described conductive polycarbonate composites comprises the component calculated by weight as follows:
Polycarbonate 65 ~ 85 parts;
Polyester 1 ~ 10 part;
Toughner 0 ~ 3 part;
Carbon black A5 ~ 15 part;
Black B 3 ~ 10 parts;
Auxiliary agent 0 ~ 1 part;
Wherein, total number of carbon black A and black B is no less than 10 parts; Described carbon black A is that specific surface area is at 10 ~ 40m
2the carbon black of/g; Described black B is oil-absorption(number) is 130 ~ 400cm
3/ 100g.
In the present invention, the specific surface area of described carbon black measures according to ASTM standard D3037, and the oil-absorption(number) of carbon black measures according to ASTM standard D2414.
A kind of conductive polycarbonate composites, described conductive polycarbonate composites is made up of the component calculated by weight as follows:
Polycarbonate 65 ~ 85 parts;
Polyester 1 ~ 10 part;
Toughner 0 ~ 3 part;
Carbon black A5 ~ 15 part;
Black B 3 ~ 10 parts;
Auxiliary agent 0 ~ 1 part;
Wherein, total number of carbon black A and black B is no less than 10 parts; Described carbon black A is that specific surface area is at 10 ~ 40m
2the carbon black of/g; Described black B is oil-absorption(number) is 130 ~ 400cm
3/ 100g.
Wherein, the melt flow rate (MFR) of described polycarbonate is at 300 DEG C, and 1.2KgASTMD-1238 is 5 ~ 30g/10min under measuring.
Wherein, described polyester is polyethylene terephthalate, Poly(Trimethylene Terephthalate) and/or polybutylene terephthalate.
Specific surface area is at 10 ~ 40m
2the carbon black particle diameter of/g is larger, dispersed better, manyly to use as toning agent.
Wherein, the preferred specific surface area of described carbon black A is determined as 20 ~ 31m according to ASTM standard D3037
2the carbon black of/g.
Wherein, described carbon black A is the carbon black prepared by lamp black method.
Wherein, described toughner is MBS MBS or ethylene-methyl acrylate copolymer EMA.
Wherein, described auxiliary agent is oxidation inhibitor or lubricant.
Wherein, described oxidation inhibitor is the mixture of one or more in hindered phenol compound, phosphite ester compound and organosulfur oxidation inhibitor.
A kind of goods be made up of described conductive polycarbonate composites.
A kind of conduction carrier band be made up of described conductive polycarbonate composites.
The preparation method of described conductive polycarbonate composites, is characterized in that, comprises the steps:
After in proportion polycarbonate, polyester, toughner, carbon black, auxiliary agent being mixed, melt extrude at the temperature of 230 ~ 260 DEG C, granulation, obtain described conductive polycarbonate composites.
Compared with prior art, the present invention has following beneficial effect:
The present invention, by adding the composite of carbon black, improves toughness and the dispersion of carbon black in system of conductive polycarbonate composites, makes the conductive polycarbonate composites prepared have high toughness and electroconductibility, have high surface quality simultaneously.The described application prospect having the field of high request to have to conductivity of composite material, toughness and surface property simultaneously, is particularly useful for making conduction carrier band.
Embodiment
Below in conjunction with some embodiments, conductive polycarbonate composites of the present invention, preparation method and application thereof are described further.Specific embodiment is for further describing the present invention, non-limiting protection scope of the present invention.
Embodiments of the invention adopt following raw material:
Polycarbonate-1, purchased from LG-Dow company, trade mark PC1300-10NP;
Polycarbonate-2, changes into company purchased from Japanese Supreme Being people, trade mark PCL-1225Y;
Polyethylene terephthalate, selects the common bright chip product that engineering plastics factory of Yizheng branch office of asset management company limited of SINOPEC produces;
Carbon black A-1, purchased from Degussa company, the trade mark dim 101, specific surface area is 20m
2/ g;
Carbon black A-2, purchased from American Columbian chemical company, trade mark Raven430U, specific surface area is 31m
2/ g;
Black B-1, purchased from American Cabot company, the trade mark
xC500, DBP value is 148cm
3/ 100g;
Black B-2, purchased from SPC chemical company of Switzerland, the trade mark
cB3100, DBP value is 380cm
3/ 100g;
Toughner-1MBS, purchased from LG chemical company of Korea S, trade mark M-521;
Toughner-2EMA, purchased from American DuPont company, trade mark ELVALOY1125AC;
Anti-oxidant Irganox 1010, purchased from Ciba company, four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester;
In embodiment, raw material used calculates all by weight.
The Izod notched impact strength that toughness measures matrix material according to ASTM standard D256 measures; The shock strength of described matrix material is at least 100J/m and is just applicable to conduct electricity carrier band;
Electroconductibility measures according to ASTM standard D257; Surface resistivity is larger, and material conductivity is poorer;
Surface quality evaluation method is as follows:
Use single screw extrusion machine to extrude the sheet material that thickness is 80 ~ 120 μm on the particle of extruding pelletization, in the region of the long 10CM of wide 5CM, when height is less than 3 higher than the number of the raised points (pit) with periphery sheet material 40 μm, judge surface quality as well; Pit number, 3 ~ 6 time, is judged to be that surface quality is better; When pit number is greater than 6, be judged to be that surface quality is poor.Pit height adopts miking, and height H is calculated as follows:
H=H
0-H
1，
Wherein, sheet thickness H
1, pit place carrier band thickness H
0.
Embodiment 1 ~ 4 and comparative example 1 ~ 5
In the ratio of table 1, after polycarbonate, polyester, toughner, carbon black, auxiliary agent are mixed, melt extrude at the temperature of 230 ~ 260 DEG C, granulation, obtain the conductive polycarbonate composites of embodiment 1 ~ 4.
Table 1
As can be seen from embodiment 1,2 and comparative example 1,2, after with the addition of carbon black A in matrix material, while product keeps excellent conductive performance, its surface property significantly improves, and toughness improves.As can be seen from embodiment 3 and comparative example 3, when the addition of carbon black is very few, negative impact is had to the conductivity of product, as can be seen from embodiment 4 and comparative example 4, when the addition of carbon black A is too much, there is negative impact to the impact property of product, as can be seen from embodiment 4 and comparative example 5, when the addition of black B is too much, there is negative impact to the impact of product and surface quality.
Embodiment 5 ~ 12
In the ratio of table 2, after polycarbonate, polyester, toughner, carbon black, oxidation inhibitor are mixed, melt extrude at the temperature of 230 ~ 260 DEG C, granulation, obtain the conductive polycarbonate composites of embodiment 5 ~ 12.
Table 2
From the results shown in Table 2, the preparation-obtained conductive polycarbonate composites of the present invention has high toughness and electroconductibility, has high surface quality simultaneously.The described application prospect having the field of high request to have to conductivity of composite material, toughness and surface property simultaneously, is particularly useful for making conduction carrier band.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a conductive polycarbonate composites, is characterized in that, described conductive polycarbonate composites comprises the component calculated by weight as follows:
Wherein, total number of carbon black A and black B is no less than 10 parts; Described carbon black A is that specific surface area is at 10 ~ 40m
2the carbon black of/g; Described black B is oil-absorption(number) is 130 ~ 400cm
3/ 100g, described carbon black A is not identical with black B.
2. a conductive polycarbonate composites, is characterized in that, described conductive polycarbonate composites is made up of the component calculated by weight as follows:
Wherein, total number of carbon black A and black B is no less than 10 parts; Described carbon black A is that specific surface area is at 10 ~ 40m
2the carbon black of/g; Described black B is oil-absorption(number) is 130 ~ 400cm
3/ 100g, described carbon black A is not identical with black B.
3. conductive polycarbonate composites as claimed in claim 1 or 2, is characterized in that, the melt flow rate (MFR) of described polycarbonate at 300 DEG C, 1.2KgASTMD ?1238 measure under be 5 ~ 30g/10min.
4. conductive polycarbonate composites as claimed in claim 1 or 2, it is characterized in that, described polyester is polyethylene terephthalate, Poly(Trimethylene Terephthalate) and/or polybutylene terephthalate.
5. conductive polycarbonate composites as claimed in claim 1 or 2, it is characterized in that, described carbon black A is the carbon black prepared by lamp black method.
6. conductive polycarbonate composites as claimed in claim 1 or 2, is characterized in that, described toughner be Jia base Bing olefin(e) acid Jia Zhi ?Ding bis-Xi ?styrol copolymer MBS or Yi Xi ?methyl acrylate copolymer EMA.
7. conductive polycarbonate composites as claimed in claim 1 or 2, it is characterized in that, described auxiliary agent is oxidation inhibitor or lubricant; Described oxidation inhibitor is the mixture of one or more in hindered phenol compound, phosphite ester compound and organosulfur oxidation inhibitor.
8. one kind by the goods that in claim 1 ~ 7, described in any one claim, conductive polycarbonate composites is made.
9. the conduction carrier band be made up of conductive polycarbonate composites described in any one claim in claim 1 ~ 7.
10. the preparation method of conductive polycarbonate composites described in any one claim in claim 1 ~ 7, is characterized in that, comprise the steps:
After in proportion polycarbonate, polyester, toughner, carbon black, auxiliary agent being mixed, melt extrude at the temperature of 230 ~ 260 DEG C, granulation, obtain described conductive polycarbonate composites.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105176044B (en) * | 2015-10-21 | 2016-11-30 | 东莞市保特高分子材料科技有限公司 | A kind of conductive agglomerate and its preparation method and application |
| MX2020009792A (en) * | 2018-03-28 | 2020-10-12 | Dow Global Technologies Llc | Composite of non-polar organic polymer and ultra-low-wettability carbon black. |
| CN112266597B (en) * | 2020-10-20 | 2023-06-23 | 浙江洁美电子科技股份有限公司 | Conductive polycarbonate composition for carrier tape and carrier tape prepared from conductive polycarbonate composition |
| CN115403861B (en) * | 2022-09-21 | 2023-07-14 | 武汉金发科技有限公司 | Isotropic electromagnetic shielding polypropylene composite material and preparation and application thereof |
| CN116769295B (en) * | 2023-06-29 | 2024-02-23 | 浦江亿通塑胶电子有限公司 | Conductive PC (polycarbonate) for conductive carrier tape sheet and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0495668A1 (en) * | 1991-01-18 | 1992-07-22 | Mitsubishi Chemical Corporation | Method for producing seamless tube for use as intermediate image-transfer belt |
| CN101208389A (en) * | 2005-06-23 | 2008-06-25 | 3M创新有限公司 | Carrier tapes and compositions thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2574076B2 (en) * | 1991-05-21 | 1997-01-22 | 帝人化成株式会社 | Conductive thermoplastic resin composition |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0495668A1 (en) * | 1991-01-18 | 1992-07-22 | Mitsubishi Chemical Corporation | Method for producing seamless tube for use as intermediate image-transfer belt |
| CN101208389A (en) * | 2005-06-23 | 2008-06-25 | 3M创新有限公司 | Carrier tapes and compositions thereof |
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