CN106751557A - A kind of low abrasion conduction PBT/PET composites and preparation method thereof - Google Patents
A kind of low abrasion conduction PBT/PET composites and preparation method thereof Download PDFInfo
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- CN106751557A CN106751557A CN201611011618.3A CN201611011618A CN106751557A CN 106751557 A CN106751557 A CN 106751557A CN 201611011618 A CN201611011618 A CN 201611011618A CN 106751557 A CN106751557 A CN 106751557A
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2203/20—Applications use in electrical or conductive gadgets
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- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
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Abstract
The invention discloses low abrasion conduction PBT/PET composites of one kind and preparation method thereof.The present invention is using PBT, PET as base-material, CNT, nucleator, primary antioxidant, auxiliary antioxidant, dispersant, filler that addition is handled well, mix through in homogenizer, melting extrusion granulation in double screw extruder is placed into, so as to obtain a kind of low abrasion conduction PBT/PET composites.Wherein CNT is processed beforehand through a kind of inorganic agent.The composite is except possessing PBT/PET alloy high temperature resistants, outside the characteristics of good mechanical property, also have resistivity low, any surface finish, the advantages of not falling black powder abrasion performance, can be used for the upper and lower bins of SMT, it may also be used for Antistatic transfer container, pallet, also can be used for electric appliance housing and structural member in occasions such as colliery, oil carrier, dust and fuel gas.
Description
Technical field
The present invention relates to carbon nanotube conducting technical field of composite materials, more particularly to a kind of low abrasion carbon nanotube conducting
PBT/PET composites and preparation method thereof.
Background technology
The upper and lower bins of SMT are widely used in automatic trigger up and down, can be used to hold pcb board, easy to clean, wiring board turnover
Convenient, stacking is neat, is easy to management.The upper and lower bins of SMT used BMC as raw material in the past, but not environmentally.Existing market is wide
The upper and lower bin raw materials of SMT of use have the conductive charcoal of the fibre reinforced ABS, Japanese NIKKO-RACK of PANASONIC and Asahi Chemical Industry
The HIPS of black filling.But these material heatproofs are below 110 DEG C, can also in long-term use process (under vibrations, hygrothermal environment)
Conductive filler is produced to peel off and obscission.Therefore, the conductive PP Pipe Compound for developing new heat-resistant, wear-resistant consumption has urgent market
Demand.
Polybutylene terephthalate (PBT) (PBT) and polyethylene terephthalate (PET) are 20 century 70s hairs
Exhibition get up thermoplastic polyester, using blend method prepare PBT/PET alloys have intensity it is high, rigidity good, heatproof, moisture-proof,
Solvent resistant and low-cost feature, are widely applied at the aspect such as automobile and household electrical appliances.
CNT has good electric conductivity, few as conductive filler addition, and smaller, table is influenceed on resin property
Face glossiness is good, the phenomenon of the black powder that will not occur dropping during finished product use, and plays net well in use
Change is acted on.
Blending method is the most common method for preparing carbon nano-tube/polymer based composites.The method is by carbon nanometer
Pipe is dispersed directly into polymeric matrix.Easily occur to reunite, it is necessary to be surface-treated due to CNT.Conventional surface changes
Property agent has：Silane, titanate coupling agent, stearic acid and high molecular surfactant etc., in addition, can also using dispersant and
Ultrasonic wave etc. is subject to aid dispersion.The advantage of blending method is simple and easy to apply, easily realizes large-scale industrial production, without spy
Different equipment, each component ratio is easily controllable.Have the disadvantage that component is difficult to be uniformly dispersed, be susceptible to reunite.CNT itself
Specific surface area is larger, and surface can be very high, is very easy to reunite, and greatly limit its application.
CN102532823A discloses a kind of antistatic PBT material, comprising PBT, glass fibre, CNT, antioxidant,
Lubricant, toughener, the patent are not directed to surface treatment and the scattering problem of CNT.
CN103214799A discloses a kind of heat conduction antistatic PET/PTT materials, using single CNT as work(
Energy filler, with the direct melt blending such as PET/PTT, the composite of gained has heat conduction and anti-static function simultaneously.Its carbon is received
Mitron is to first pass through conventional strong oxidizer treatment, then with coupling agent treatment, process is cumbersome, and strong acid treatment may damage carbon
The self structure of nanotube.Antistatic PET engineering plastics are also to employ similar approach disclosed in CN103183934A.
CN102675836A discloses a kind of preparation method of conduction/antistatic polyester PET composite material, and the patent is used
Conductive powder CNT and aniline are carried out into solution blending with PET pellets, conduction/antistatic polyester PET composite material are obtained,
But solution blending is suitable only for the preparation of a small amount of composite, is not suitable for large-scale production.
The content of the invention
To overcome the deficiencies in the prior art, the invention discloses low abrasion conduction PBT/PET composites and its system of one kind
Preparation Method.
The technical solution adopted for the present invention to solve the technical problems is：A kind of low abrasion conduction PBT/PET composites,
Fraction meter by weight, its each group distribution ratio is as follows：
The CNT of the treatment is that CNT is added in high-speed mixer, is firstly added 2% methyl silicon
Oil, 100 DEG C mix 30 minutes, then cooling discharging.
Primary antioxidant selects four [β-(3,5- di-tert-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol esters, and the preferably trade mark is vapour
The Irganox 1010 of Ba Jinghua productions；Auxiliary anti-oxidant selects three (2,4- di-tert-butylphenol) phosphite esters, and the preferably trade mark is vapour
The Irganox 168 of Ba Jinghua productions；Dispersant aluminium titanium compound, the preferably trade mark are Hangzhou Jesse's card Chemical Manufacture
HY-133。
A kind of preparation method of low abrasion conduction PBT/PET composites, it has following steps：
(1) by weight percentage, by PBT 50~100%, PET 1~30%, the CNT 3.5 handled well~
5%, barium sulfate 0~20%, nucleator 0~1%, antioxidant 1010 0.1~1%, irgasfos 168 0.1~1% and dispersant
After 0.1~1% accurate weighing, it is pre-dried at 85~90 DEG C；
(2) above-mentioned dried material is added into 1~4min of high-speed mixer for dry mixing, is then added mixed material double
Screw extruder, cooling, dry, pelletizing get product after double screw extruder melting extrusion；Wherein extruder barrel temperature
180~230 DEG C, 250~350 revs/min of screw speed.
Low abrasion conduction PBT/PET composites of the invention, have the advantages that compared with the prior art：
1st, the CNT added in the present invention, addition is small, and conductive effect is good, and because addition is small, product table
Face is bright and clean, wears away small.Simultaneously because addition is small, on other performances substantially without influence.
2nd, the present invention is surface-treated CNT by dimethicone, can effectively prevent the reunion of CNT, promotes
Dispersion of the CNT in PBT/PET composites, product surface resistance is low, wears away small.
3rd, conductive PBT/PET composites prepared by the present invention are provided simultaneously with PBT/PET alloy high temperature resistants, good mechanical property
The characteristics of, can be used for outside the upper and lower bins of SMT, it may also be used for Antistatic transfer container, pallet, also can be in colliery, oil carrier, dust and can
The occasions such as combustion gas body are used for electric appliance housing and structural member.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment one
(1) by PBT 84.6%, PET 5%, the CNT 3.5% handled well, barium sulfate 6%, nucleator 0.2%,
After antioxidant 1010 0.2%, irgasfos 168 0.2% and the accurate weighing of dispersant 0.3%, it is pre-dried at 85~90 DEG C；
(2) above-mentioned dried material is added into 1~4min of high-speed mixer for dry mixing, is then added mixed material double
Screw extruder, cooling, dry, pelletizing get product after double screw extruder melting extrusion.Extruder barrel temperature 200~
230 DEG C, 300 revs/min of screw speed.
Embodiment two
Its preparation process is formulated and is with embodiment one：By PBT 90.6%, PET 5%, the CNT handled well
3.5%, nucleator 0.2%, antioxidant 1010 0.2%, irgasfos 168 0.2% and dispersant 0.3%.
Embodiment three
Its preparation process is formulated and is with embodiment one：PBT 84.1%, PET 5%, the CNT 4% handled well, sulphur
Sour barium 6%, nucleator 0.2%, antioxidant 1010 0.2%, irgasfos 168 0.2% and dispersant 0.3%.
Comparative example one
Its preparation process is formulated and is with embodiment one：PBT 84.6%, PET 5%, untreated CNT 3.5%,
Barium sulfate 6%, nucleator 0.2%, antioxidant 1010 0.2%, irgasfos 168 0.2% and dispersant 0.3%.
Comparative example two
Its preparation process is formulated and is with embodiment one：PBT 85.1%, PET 5%, the CNT 3% handled well, sulphur
Sour barium 6%, nucleator 0.2%, antioxidant 1010 0.2%, irgasfos 168 0.2% and dispersant 0.3%.
Comparative example three
Its preparation process is formulated and is with embodiment one：PBT 80.1%, PET 5%, conductive black 8%, barium sulfate 6%,
Nucleator 0.2%, antioxidant 1010 0.2%, irgasfos 168 0.2% and dispersant 0.3%.
Embodiment and comparative example gained particle are dried into 3~6h in 120 DEG C of baking oven as stated above, then by drying
Good particle injects sample preparation on injection machine.Injection moulding die temperance control is at 35~45 DEG C.
Bending property test is carried out by GB/T9341-2008, and specimen size is 80 × 10 × 4mm, and rate of bending is 2mm/
Min, span is 64mm；Test equipment is the XWW-20A type electronic universal testers of Chengde Jinjian Testing Instrument Co., Ltd.；
Notched Chalpy impact intensity is performed by GB/T1843-2008, and specimen size is 80 × 10 × 4mm, pendulum energy
5.5J, test equipment is the XC-22D radial-boom impact testers of Chengde Jinjian Testing Instrument Co., Ltd.；
Non-notch cantilever beam impact strength is performed by GB/T1843-2008, and specimen size is 80 × 10 × 4mm, pendulum energy
Amount 5.5J, test equipment is the XC-22D radial-boom impact testers of Chengde Jinjian Testing Instrument Co., Ltd. of U.S..Take 5 samples
Bar, test result is divided into fracture and is not broken；
Load deformation temperature is performed by testing standard GB/T1634.2-2004, and test equipment builds detector for Chengde gold
The XRW-300M thermal deformation vicat softening point temperature analyzers of device Co., Ltd.Test condition is 0.45MPa.
Surface resistivity presses GB/T1410-2006/IEC60093:1980 perform, and test equipment is the remote middle electronics in Shanghai
The PC27-7H insulation resistance meters of device factory.
GB/T3960-1983 (1989) execution is pressed in volume abrasion, and test equipment is that Jinan benefit China tribology tester technology has
The vertical omnipotent friction wear testing machine of the MMW-1A of limit company.
The formula and Performance comparision of embodiment one to three and comparative example one to three are shown in Table 1.
The formula and Performance comparision of the embodiment one to three of table 1 and comparative example one to three
As shown in Table 1, the low abrasion conduction PBT/PET composite material surface resistance that example one, example two, example three are enumerated
Rate is low, volume abrasion it is small, can be used for produce electron trade circuit board handling use blanking rack, electrostatic is not produced in use, together
When without coming off, and heat distortion temperature is high, is preferable material.
Comparative example one is also easy to produce dust due to having used untreated CNT in production, and with dimethyl-silicon
The CNT of oil processing is compared, and volume worn becomes big, and sheet resistance is increased substantially, and surface resistivity does not reach 105Ω with
Under industry requirement.
The treated content of carbon nanotubes of the addition of comparative example two is low, does not reach the surface of conductive PBT/PET composites
Resistivity requirement.
Comparative example three adds superconductive carbon black, and general addition will reach more than 8%, and the abrasion of its volume is larger, uses
In carbon dust obscission occurs.
Conductive PBT/PET composites prepared by this patent are except possessing PBT/PET alloys high temperature resistants, good mechanical property
Also low with resistivity outside feature, any surface finish the advantages of do not fall black powder abrasion performance, can be used for outside the upper and lower bins of SMT, may be used also
For Antistatic transfer container, pallet, also can the occasions such as colliery, oil carrier, dust and fuel gas be used for electric appliance housing and
Structural member.
The above-mentioned description to embodiment is to be understood that and apply this hair for the ease of those skilled in the art
It is bright.Man skilled in the art obviously can easily to these embodiments, various modifications may be made, and General Principle described herein
It is applied in other embodiments without by performing creative labour.Therefore, the invention is not restricted to the embodiment of this fruit, this area
Technical staff's announcement of the invention, does not depart from improvement that scope made and modification all should be in protection of the invention
Within the scope of.
Claims (3)
1. a kind of low abrasion conduction PBT/PET composites, it is characterised in that fraction meter by weight, its each group distribution ratio is as follows：
Wherein, the CNT handled well is that CNT is added in high-speed mixer, is firstly added 2% methyl
Silicone oil, 100 DEG C mix 30 minutes, then cooling discharging.
2. it is according to claim 1 it is low abrasion conduction PBT/PET composites, it is characterized in that：The primary antioxidant is four
[β-(3,5- di-tert-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol ester；The auxiliary anti-oxidant is sub- three (2,4- di-tert-butylphenols)
Phosphate；The dispersant is aluminium titanium compound.
3. the preparation method of low abrasion conduction PBT/PET composites according to claim 1 has following steps：
(1) by weight percentage, by PBT 50~100%, PET 1~30%, the CNT 3.5~5% handled well, sulphur
Sour barium 0~20%, nucleator 0~1%, antioxidant 1010 0.1~1%, irgasfos 168 0.1~1% and dispersant 0.1~
After 1% accurate weighing, it is pre-dried at 85~90 DEG C；
(2) above-mentioned dried material is added into 1~4min of high-speed mixer for dry mixing, mixed material is then added into twin-screw
Extruder, cooling, dry, pelletizing get product after double screw extruder melting extrusion；Wherein extruder barrel temperature 180~
230 DEG C, 250~350 revs/min of screw speed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393744A (en) * | 2020-03-26 | 2020-07-10 | 南京京锦元科技实业有限公司 | TPE material with antibacterial conductivity and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532823A (en) * | 2010-12-30 | 2012-07-04 | 合肥杰事杰新材料股份有限公司 | Anti-static polybutylene terephthalate (PBT) material with excellent comprehensive performance and preparation method thereof |
| 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 |
| CN105754214A (en) * | 2016-03-10 | 2016-07-13 | 北京北交富沃机电工程科技有限公司 | Low-percolation-threshold polypropylene-based composite electroconductive high polymer material and preparation method thereof |
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2016
- 2016-11-17 CN CN201611011618.3A patent/CN106751557B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532823A (en) * | 2010-12-30 | 2012-07-04 | 合肥杰事杰新材料股份有限公司 | Anti-static polybutylene terephthalate (PBT) material with excellent comprehensive performance and preparation method thereof |
| 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 |
| CN105754214A (en) * | 2016-03-10 | 2016-07-13 | 北京北交富沃机电工程科技有限公司 | Low-percolation-threshold polypropylene-based composite electroconductive high polymer material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111393744A (en) * | 2020-03-26 | 2020-07-10 | 南京京锦元科技实业有限公司 | TPE material with antibacterial conductivity and preparation method thereof |
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