CN105949739B - Conductive in-dash computer/PBT resin composition and preparation method thereof - Google Patents
Conductive in-dash computer/PBT resin composition and preparation method thereof Download PDFInfo
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- CN105949739B CN105949739B CN201610410619.9A CN201610410619A CN105949739B CN 105949739 B CN105949739 B CN 105949739B CN 201610410619 A CN201610410619 A CN 201610410619A CN 105949739 B CN105949739 B CN 105949739B
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- pbt resin
- conductive
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- carbon black
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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
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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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
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention relates to a kind of conductive in-dash computer/PBT resin composition and preparation method thereof, the composition by weight percentage, including following components：PC resin 50% 60%；PBT resin 30% 45%；MBS copolymers 3% 7%；Conductive black 0.3%~3%.The preparation method of resin combination has following characteristics：PC resin is added in the first spout of extruder, PBT resin, MBS copolymers and conductive black are added in the second spout.The resin combination prepared using the present invention has stable two-arch tunnel structure, and charcoal clandestine meeting is selectively dispersed in boundary, on the premise of two-arch tunnel structure combination boundary disperses, carbon black can just form conductive path under lower content, exceeding for carbon black of reduction oozes threshold values, and composition is made to have both good electric conductivity and impact property.
Description
Technical field
The present invention relates to processing of high molecular material technical fields, and in particular to a kind of conduction in-dash computer/PBT resin combination
Object and preparation method thereof.
Background technology
PC/PBT resin combinations have preferable energy absorbing efficiency, and have preferably under different environment temperatures
Therefore stability, has broad application prospects in the automobile interior exterior gorget domain higher and higher to security requirement.Automobile interior exterior
Decorations generally have plating or a spraying post-processing, and electrostatic spraying is since its spray efficiency is high, low in the pollution of the environment more and more concerned,
Therefore, the material for having both high conductivity and high impact is increasingly favored.Also have in the prior art many relevant
Patent.For example the patent of Publication No. CN1024247 discloses a kind of conductivity type PC/PBT composite materials and preparation method thereof, leads to
The carbon fiber for crossing addition 15%-20% realizes the electric conductivity of material.But the erosion-resisting characteristics of composite material is poor, about exists
100J/m, and the addition of so a large amount of carbon fibers causes cost to greatly improve；The patent of Publication No. CN1445282 for another example
A kind of conductivity type PA/PPE resin combinations and preparation method thereof are disclosed, but since PA/PPE belongs to complete incompatible body
System also can be only formed sea-island structure by increasing reaction, electric conductivity promoted can only by increase the content of conductive black come
It realizes, and the raising of carbon black content is just inherently so that impact property declines.
The content of the invention
For in the prior art the defects of, the object of the present invention is to provide a kind of conductive in-dash computer/PBT resin compositions
And preparation method thereof.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention provides a kind of conductive in-dash computer/PBT resin composition, the PC/PBT resin combinations include
The each component of following weight percent：
Preferably, the PC/PBT resin combinations include each component of following weight percent：
Preferably, the makrolon is bisphenol A polycarbonate, and weight average molecular weight is 2.0~3.5 × 104g/
mol。
Preferably, the inherent viscosity of the PBT resin (polybutylene terephthalate (PBT)) is 0.6~1.5dl/g.
Preferably, the MBS copolymers (Methacrylate-butadiene-styrene) are nucleocapsids, and core is
The mutually spherical core of butadiene of a diameter of 100-300nm, the weight content of butadiene is 50-80%.
Preferably, the conductive carbon black is nanoscale, and average particle size particle size is less than 200 nanometers.Conductive carbon black grain size mistake
Greatly, volume parts can be caused to decline, specific surface area reduces, and is not easy to form conductive path.
Preferably, the conductive carbon black is surface modification, and surface is with-COOH group.
The present invention also provides a kind of preparation methods of conductive in-dash computer/PBT resin composition, comprise the following steps：
S1, each component for weighing following weight percent：PC resin：50%-60%；PBT resin：30%-40%；MBS
Copolymer：3%-7%；Conductive carbon black：0.3%-3%；
S2, PC resin from the first spout of extruder is added in, PBT resin, MBS copolymers is added in the second spout
And conductive carbon black, melt blending, the conductive in-dash computer/PBT resin composition is prepared.
Preferably, in step S2, the extruder screw rotating speed is 200-500rpm, and melting temperature is 250-280 DEG C.
The present invention from material properties, selects PC and PBT resin composition, PC and PBT resin composition molten first
The easy development of heat is compatible under shearing condition when melting mixing, and can occur under zero shearing condition after going out extrusion neck ring mold
Spinodal spinodals are separated, so as to form two-arch tunnel structure.The inventor of this patent is received by largely testing discovery
The introducing of rice corpuscles can be with the two-arch tunnel structure of stable resin composition；The present invention is further in conjunction with the control of expressing technique
So that nano carbon black is dispersed in the boundary of PC/PBT compositions：If PC resin, PBT resin, MBS copolymers and conductive black
It is all added in from the first spout, carbon black is easily dispersed the PBT phases in low melt viscosity；And if PC resin is taken to be fed from first
Material mouth adds in and mode that PBT resin, MBS copolymers and carbon black are added in from the second spout, and carbon black tends to having melted
PC phases migrate, moreover, the carbon black through modification of surfaces band-COOH group is also easily migrated to PC phases, occur with the end-OH of PC anti-
It should；Furthermore the compatibility of MBS and PC is better than the compatibility of MBS and PBT, therefore MBS also tends to migrate to PC, can be further
Carbon black is driven to be migrated to PC phases.
The resin combination prepared using the present invention has stable two-arch tunnel structure, and carbon black can be selectively dispersed in
Boundary, on the premise of two-arch tunnel structure combination boundary disperses, carbon black can just form conductive logical under lower content
Road, reducing exceeding for carbon black oozes threshold values, and composition is made to have both good electric conductivity and impact property.
The prior art is compared, and the present invention has following advantageous effect：
1st, the present invention using the two-arch tunnel structure of nano-particle stable resin composition, then is passed through by design of material
Component design and processes optimize, and make carbon black that can selectively be dispersed in boundary.Disperse in two-arch tunnel structure combination boundary
Under the premise of, carbon black can just form conductive path under lower content, and reducing exceeding for carbon black oozes threshold values, and therefore, composition rushes
Hitting performance will not be substantially reduced.
2nd, composition prepared by the present invention shows highest 105Ω/m2Surface resistivity and according to ASTM D256 measure
At least about 600J/m 23 DEG C measure notched Izod.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
The PC/PBT resin combinations of the present invention easy development of heat in melting mixing is compatible, and holds after outlet mold
The phase separation of Spinodal spinodals easily occurs, so as to form two-arch tunnel structure.Co-continuous is selectively dispersed in nano-particle
On the boundary of phase structure, it on the one hand can stablize two-arch tunnel structure, it on the other hand again can be under relatively low carbon black content just
Conductive network access is formed, reducing exceeding for carbon black oozes threshold values.So how carbon black could be allowed selectively to be dispersed in boundaryThis hair
It is bright to be realized by two technology points：(1) carbon black of nano level surface modification is selected；(2) process optimization：PC is taken from first
Spout adds in, and the mode that other components are added in from the first spout.
Embodiment 1-4
The raw material used for：
PC resin, weight average molecular weight are 3.0 × 104g/mol；
PBT resin, inherent viscosity 1.0dl/g；
MBS copolymers, grain size 300nm, butadiene weight percentage are 60%；
The conductive carbon black of surface modification, average-size about 100nm, surface band-COOH；Such as Akzo Nobel companies life
The Ketjenblack EC-600JD of production.
Each component is weighed according to the weight percent shown in table 1, prepares the thermoplastic resin with the following method afterwards
Composition：
Step 1, each component is weighed according to parts by weight；
Step 2, PBT resin, MBS copolymers and conductive carbon black in high-speed mixer are sufficiently mixed 10min, must mixed
Object；
Step 3, PC resin is entered from the first spout of double screw extruder, and the pre-composition obtained by step 2 is from the
Two spouts enter, by melting extrusion, cooling, drying, pelletizing to get the thermoplastic resin composition.
Comparative example 1-2
The raw material used for：
PC resin, weight average molecular weight are 3.0 × 104g/mol；
PBT resin, inherent viscosity 1.0dl/g；
MBS copolymers, grain size 300nm, butadiene weight percentage are 60%；
The conductive carbon black of surface modification, average-size about 100nm, surface band-COOH；
Each component is weighed according to the weight percent shown in table 1, prepares the thermoplastic resin with the following method afterwards
Composition：
Step 1, each component is weighed according to parts by weight；
Step 2, PC resin, PBT resin, MBS copolymers and conductive carbon black are sufficiently mixed in high-speed mixer
10min obtains mixture；
Step 3, pre-composition all from the first spout of double screw extruder is entered, by melting extrusion, cooling, done
Dry, pelletizing is to get the thermoplastic resin composition.
Comparative example 3
The preparation method of comparative example 3 is same as Example 1, and the parts by weight of each component are as shown in table 2, and difference only exists
In：The conductive carbon black grain size that this comparative example uses is 350nm.Such as the BLACK PEARLS430 of Cabot companies production.
Comparative example 4
The preparation method of comparative example 3 is same as Example 2, and the parts by weight of each component are as shown in table 2, and difference only exists
In：The non-surface modification of conductive carbon black that this comparative example uses, surface is without-COOH.Such as the BLACK of Cabot companies production
PEARLS 160。
Comparative example 5-7
The preparation method of comparative example 5-7 is identical with embodiment, and the parts by weight of each component are as shown in table 2.
Resin combination prepared by embodiment and comparative example is positioned in 100 DEG C of baking oven dry more than 12h, removes water
Point；Then carry out injection moulding and prepare sample.Physical property measurement follows following test method：It is normal based on ASTM D-256 standard tests
Warm (23 DEG C) and 1/8 " Izod notch impact strengths of low temperature (- 30 DEG C)；Thermal change based on ASTM D-648 standard tests 1.82MPa
Shape temperature.Surface resistivity presses IEC60093 standard testings.
The performance of the raw material weight percentage of embodiment 1-4 and comparative example 1-2 and its resin combination of preparation is listed in down
The performance of table 1, the raw material weight percentage of comparative example 3-7 and its resin combination of preparation is listed in the table below 2.
Table 1
Table 2
It can be seen that the PC/PBT thermoplastic resin groups prepared according to the present invention from the experimental result of embodiment and comparative example
Object is closed, has both excellent notched impact properties and electric conductivity.
The present invention using the two-arch tunnel structure of nano-particle stable resin composition, then passes through group by design of material
Set up meter and process optimization separately, make carbon black that can selectively be dispersed in boundary.Before two-arch tunnel structure combination boundary disperses
It putting, carbon black can just form conductive path under lower content, and reducing exceeding for carbon black oozes threshold values, therefore, the impact of composition
Performance will not be substantially reduced.
There are many concrete application approach of the present invention, and the above is only the preferred embodiment of the present invention.More than it should be pointed out that
Embodiment is merely to illustrate the present invention, and the protection domain being not intended to limit the invention.For the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as this hair
Bright protection domain.
Claims (3)
1. a kind of preparation method of conduction in-dash computer/PBT resin composition, which is characterized in that comprise the following steps：
S1, each component is weighed by weight percentage；
S2, PC resin from the first spout of extruder is added in, adds in PBT resin, MBS copolymers to the second spout and lead
Electrical carbon is black, melt blending, and the conductive in-dash computer/PBT resin composition is prepared；
In step S2, the extruder screw rotating speed is 200-500rpm, and melting temperature is 250-280 DEG C；
Conduction in-dash computer/PBT resin the composition includes each component of following weight percent：
The makrolon is bisphenol A polycarbonate, and weight average molecular weight is 2.0~3.5 × 104g/mol；
The conductive carbon black is nanoscale, and average particle size particle size is less than 200 nanometers；
The conductive carbon black is surface modification, and surface is with-COOH group.
2. the preparation method of conduction in-dash computer/PBT resin composition according to claim 1, which is characterized in that described
PBT resin inherent viscosity be 0.6~1.5dl/g.
3. the preparation method of conduction in-dash computer/PBT resin composition according to claim 1, which is characterized in that described
MBS copolymers be nucleocapsid, core is the mutually spherical core of butadiene of a diameter of 100-300nm, the weight content of butadiene
For 50-80%.
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| CN201610410619.9A CN105949739B (en) | 2016-06-13 | 2016-06-13 | Conductive in-dash computer/PBT resin composition and preparation method thereof |
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| CN201610410619.9A CN105949739B (en) | 2016-06-13 | 2016-06-13 | Conductive in-dash computer/PBT resin composition and preparation method thereof |
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| CN105949739A CN105949739A (en) | 2016-09-21 |
| CN105949739B true CN105949739B (en) | 2018-05-18 |
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| KR102041597B1 (en) * | 2016-12-29 | 2019-11-06 | 롯데첨단소재(주) | Resin compositions and articles using the same |
| CN107446323B (en) * | 2017-06-29 | 2019-09-17 | 上海金山锦湖日丽塑料有限公司 | PBT/ABS resin combination with permanent antistatic and preparation method thereof |
| CN111808412A (en) * | 2020-07-29 | 2020-10-23 | 江苏新奥碳纳米材料应用技术研究院有限公司 | Graphene reinforced conductive PC/PBT alloy for electronic carrier tape |
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| JPH0689228B2 (en) * | 1986-02-12 | 1994-11-09 | 帝人化成株式会社 | Resin composition |
| US8003016B2 (en) * | 2007-09-28 | 2011-08-23 | Sabic Innovative Plastics Ip B.V. | Thermoplastic composition with improved positive temperature coefficient behavior and method for making thereof |
| CN102888097A (en) * | 2012-09-27 | 2013-01-23 | 上海锦湖日丽塑料有限公司 | Polyamide polyphenylether resin composition with interpenetrating network structure and preparation thereof |
| CN103937191B (en) * | 2014-05-09 | 2015-12-30 | 东莞市德诚塑化科技有限公司 | A kind of conductive polycarbonate and preparation method thereof |
| CN104559114A (en) * | 2014-12-31 | 2015-04-29 | 上海锦湖日丽塑料有限公司 | Reactive thermoplastic resin combination and preparation method thereof |
| CN104927335B (en) * | 2015-07-15 | 2016-08-17 | 上海锦湖日丽塑料有限公司 | High heat-resisting PC/PBT resin combination of a kind of high tenacity and preparation method thereof |
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