CN107498742A - Its aluminium electrolutic capacitor of the preparation method and application of PET sebific ducts - Google Patents
Its aluminium electrolutic capacitor of the preparation method and application of PET sebific ducts Download PDFInfo
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- CN107498742A CN107498742A CN201710638812.2A CN201710638812A CN107498742A CN 107498742 A CN107498742 A CN 107498742A CN 201710638812 A CN201710638812 A CN 201710638812A CN 107498742 A CN107498742 A CN 107498742A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/283—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring data of the driving system, e.g. torque, speed, power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- 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
- C08L2205/02—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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a kind of preparation method of PET sebific ducts, PET sebific ducts and apply its aluminium electrolutic capacitor, the preparation method of the PET sebific ducts to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer by carrying out mixed at high speed, the PET sebific ducts prepared using this method, not only significantly improve resistance to low temperature, and enhance ageing resistance, the compliance of PET strands is enhanced, the toughness of PET sebific ducts when enhancing high temperature, reduces the probability of its embrittlement.
Description
Technical field
The present invention relates to a kind of preparation method of PET sebific ducts, PET sebific ducts and apply its aluminium electrolutic capacitor.
Background technology
It is originally most of all to use thermoplastic polyvinyl chloride high polymer as the plastic bushing of aluminium electrolutic capacitor
(Polyvinyl chloride；Abbreviation PVC).PVC is able to take general acid, the corrosion of alkali at normal temperatures, is substantially resistant to
All solvents (except chlorinated hydrocarbons solvent), ageing resistace is also relatively good, and has fairly good mechanical strength and good
Electricity saving performance, aluminium electrolutic capacitor insulating properties and other requirements are met well；Other glass transition temperature is relatively low, is easy to
The pyrocondensation processing of sleeve pipe.Therefore, PVC is also extensively used for electric wire, cable in addition to the sleeve pipe for being used for aluminium electrolutic capacitor
Insulating covering and other electronic component outer layer insulation protective cases.
Later with the development of high polymer material, it has been found that a kind of more excellent material contracting with heat sebific duct --- PET
(Polyethylene glycol terephthalate；Polyethylene terephthalate).PET resin has more excellent
Physical and mechanical properties, solvent resistance and electrical insulating property, while production cost is relatively low, has higher cost performance；PET is as warm
The polyester material of plasticity, the advantage of its performance can not be given full play of if being used alone, in order to widen PET application model
Enclose, it is necessary to be modified to it, that is, improve or optimize performance, by it is modified come assign its more performance and optimization to strengthen its former
Some performances.Compared to PVC, PET mechanical strength, resistance to elevated temperatures and electrical insulation capability is all considerably more than PVC pyrocondensations
Sleeve pipe, and using upper and traditional PVC heat-shrinkable T bush, without too big difference, the equipment investment of user will not be increased, be PVC pyrocondensations
Sleeve pipe a new generation upgrading substitute products, it is the optimal selection of battery, electrochemical capacitor manufacturing enterprise.
But while as optimal selection, also it is faced with huge challenge.In October, 2015, National Development and Reform Committee's print
Hair《Charging electric vehicle infrastructure development guide (2015-2020)》Middle planning, to the year two thousand twenty, China is by newly-increased centralization
Electric charging station 1.2 ten thousand, distributing charging pile is more than 4,800,000, to meet the charge requirement of national 5,000,000 electric automobiles.
The performance indications of charging pile must be high-low temperature resistant change impact, ageing-resistant, fire-retardant, shell material insulation etc., and be used as charging pile to use
Alminium electrolytic condenser on the basis of existing performance parameters are met, it is necessary to reach more stable performance, so, as
The sebific duct of electric capacity top layer diaphragm, it is also necessary to there is better performance, it is for example low temperature resistant, it so can just make outer to wait compared with cold air cruelly
The electric capacity that area uses ensures its effect.
As other macromolecule resin materials, the modified optimization to PET is typically started with terms of two：First, chemistry changes
Property, i.e., by being copolymerized, being grafted, block, the chemical means such as crosslinking, assign its better performance or New function；Second, use physics
Method of modifying, i.e., the methods of being blended by using inorganic filler auxiliary agent or other resin materials, improve PET performance.But no matter
It is using being chemically modified or physical modifications, the resistance to low temperature using the aluminium electrolutic capacitor of PET sebific ducts are still bad.
The content of the invention
It is contemplated that at least solve one of above-mentioned technical problem to a certain extent or provide at a kind of useful business
Industry selects.Therefore, it is an object of the present invention to propose a kind of preparation method of PET sebific ducts, the preparation side of the PET sebific ducts
Method to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer by carrying out mixed at high speed, using the party
PET sebific ducts prepared by method, not only significantly improve resistance to low temperature, and enhance ageing resistance, enhance PET strands
Compliance, the toughness of PET sebific ducts when enhancing high temperature, reduce the probability of its embrittlement.It is another object of the present invention to carry
Go out a kind of PET sebific ducts using prepared by above-mentioned preparation method.Another object of the present invention is to propose one kind using upper
State the aluminium electrolutic capacitor of PET sebific ducts.
According to the preparation method of the PET sebific ducts of the present invention, the described method comprises the following steps：S1, by PET resin in vacuum
Drying process in room, wherein the temperature control of the vacuum chamber, at 120 DEG C, the drying process time is 4H；S2, it will be done in step S1
PET resin after dry processing is taken out and is placed in high-speed mixer from the vacuum chamber, adds in the high-speed mixer
Enter toughener, antioxidant and high-temperature stabilizer, make the high-speed mixer work with to the PET resin, the toughener, institute
State antioxidant and the high-temperature stabilizer carries out mixed at high speed, to form a mixed material, wherein, the high-speed mixer turns
Speed is 40 revs/min, and in 15-35 DEG C of room temperature, the time of the mixed at high speed is 10 minutes for the temperature control of the high-speed mixer；
S3, the mixed material taken out from the high-speed mixer and be placed in an injection machine, pass through injection machine injection molding.
According to the present invention PET sebific ducts preparation method, methods described by high-speed mixer to PET resin, increase
Tough dose, antioxidant and high-temperature stabilizer carry out mixed at high speed, the PET sebific ducts prepared using this method, not only significantly improve resistance to
Cryogenic property, and ageing resistance is enhanced, the compliance of PET strands is enhanced, PET sebific ducts is tough when enhancing high temperature
Property, reduce the probability of its embrittlement.
In addition, according to the preparation method of the above-mentioned PET sebific ducts of the present invention, there can also be technical characteristic additional as follows：
The toughener is PTT.
The antioxidant is Switzerland's vapour bar elite.
The high-temperature stabilizer is focus ratio.
Present invention also offers a kind of PET sebific ducts, the PET sebific ducts are using prepared by above-mentioned any preparation method.
According to the PET sebific ducts of the present invention, the PET sebific ducts include PET resin, toughener, antioxidant and high-temperature stabilizer,
By carrying out mixed at high speed to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer, using this method
The PET sebific ducts of preparation, not only significantly improve resistance to low temperature, and enhance ageing resistance, enhance the soft of PET strands
It is pliable, the toughness of PET sebific ducts when enhancing high temperature, reduce the probability of its embrittlement.
Present invention also offers a kind of aluminium electrolutic capacitor, including aluminium electrolutic capacitor main body and the covering aluminium electroloysis electricity
The PET sebific ducts on container body surface, the PET sebific ducts are the PET sebific ducts of said structure.
According to the aluminium electrolutic capacitor of the present invention, the aluminium electrolutic capacitor includes aluminium electrolutic capacitor main body and covering institute
The PET sebific ducts of aluminium electrolutic capacitor body surfaces are stated, it is steady that the PET sebific ducts include PET resin, toughener, antioxidant and high temperature
Agent is determined, by carrying out mixed at high speed to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer, using this
PET sebific ducts prepared by method, not only significantly improve resistance to low temperature, and enhance ageing resistance, enhance PET strands
Compliance, the toughness of PET sebific ducts when enhancing high temperature, reduce the probability of its embrittlement.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the preparation method flow chart of the PET sebific ducts of one embodiment of the present of invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
With reference to figure 1, the invention provides a kind of preparation method of PET sebific ducts, can be prepared by the preparation method
PET sebific ducts, methods described specifically include following steps：
S1, by PET resin drying process in a vacuum chamber, wherein at the temperature control of the vacuum chamber at 120 DEG C, dries
The reason time is 4H.
By PET resin being dried in a vacuum chamber processing, the moisture in PET resin can be removed, is avoided follow-up
Bubble is produced in PET resin injection molding.
S2, the PET resin after drying process in step S1 is taken out from the vacuum chamber and is placed on high-speed mixer
In, toughener, antioxidant and high-temperature stabilizer are added in the high-speed mixer, makes the high-speed mixer work with to institute
State PET resin, the toughener, the antioxidant and the high-temperature stabilizer and carry out mixed at high speed, to form a mixed material,
Wherein, the rotating speed of the high-speed mixer is 40 revs/min, and the temperature control of the high-speed mixer is described in 15-35 DEG C of room temperature
The time of mixed at high speed is 10 minutes.
The PET resin after drying process in above-mentioned upper step S1 is taken out from the vacuum chamber and is placed at a high speed first
In mixer, toughener, antioxidant and high-temperature stabilizer are then added in the high-speed mixer, controls high-speed mixer work
Make to carry out mixed at high speed to the PET resin, the toughener, the antioxidant and the high-temperature stabilizer, high speed is mixed
The rotating speed of conjunction machine is controlled at 40 revs/min, by the temperature control of high-speed mixer in 15-35 DEG C of room temperature, is controlled after work after 10 minutes
High-speed mixer processed is stopped, and the PET resin, the toughener, the antioxidant and the high-temperature stabilizer are mixed at a high speed
Close and form a mixed material.
S3, the mixed material taken out from the high-speed mixer and be placed in an injection machine, pass through injection machine
Injection molding.
After the mixed material is taken out from high-speed mixer and it is placed in an injection machine, by injection molding, and
Form the PET sebific ducts of the embodiment of the present invention.
According to the present invention PET sebific ducts preparation method, methods described by high-speed mixer to PET resin, increase
Tough dose, antioxidant and high-temperature stabilizer carry out mixed at high speed, the PET sebific ducts prepared using this method, not only significantly improve resistance to
Cryogenic property, and ageing resistance is enhanced, the compliance of PET strands is enhanced, PET sebific ducts is tough when enhancing high temperature
Property, reduce the probability of its embrittlement.
In specific implementation, the toughener is PTT, and PTT is a kind of excellent performance that fiber is the exploitation of Shell companies
Polyesters tencel, it is formed by terephthalic acid (TPA) (PTA) and 1,3- propane diols (PDO) polycondensation, and its molecular structural formula is
((CH2) 3O O=C O=CO)), ptt fiber combines the flexibility of nylon, the bulkiness of acrylic fibers, the pollution resistance of terylene, adds
On elasticity inherently, and can normal temperature dyeing the features such as, the excellent wearability of various fibers is rolled into one.This implementation
The toughener of example uses PTT, by the compliance for increasing PET strands.
In specific implementation, the antioxidant is Switzerland's Ciba, by the way that antioxidant is arranged into Switzerland's Ciba,
Add the ageing resistance of PET sebific ducts.
In specific implementation, the high-temperature stabilizer is focus ratio.Because focus ratio has excellent machinery
Intensity, ductility and toughness, and creep properties and molding shrinkage are relatively low, the high-temperature stabilizer of the embodiment of the present invention uses poly phenol oxygen
Resin, the toughness of PET sebific ducts when adding high temperature, marry the probability of your PET sebific duct embrittlement.
Present invention also offers a kind of PET sebific ducts, the PET sebific ducts are as prepared by above-mentioned preparation method.
According to the PET sebific ducts of the present invention, the PET sebific ducts include PET resin, toughener, antioxidant and high-temperature stabilizer,
By carrying out mixed at high speed to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer, using this method
The PET sebific ducts of preparation, not only significantly improve resistance to low temperature, and enhance ageing resistance, enhance the soft of PET strands
It is pliable, the toughness of PET sebific ducts when enhancing high temperature, reduce the probability of its embrittlement.
Present invention also offers a kind of aluminium electrolutic capacitor, including aluminium electrolutic capacitor main body and the covering aluminium electroloysis electricity
The PET sebific ducts on container body surface, the PET sebific ducts are the PET sebific ducts of said structure.
According to the aluminium electrolutic capacitor of the present invention, the aluminium electrolutic capacitor includes aluminium electrolutic capacitor main body and covering institute
The PET sebific ducts of aluminium electrolutic capacitor body surfaces are stated, it is steady that the PET sebific ducts include PET resin, toughener, antioxidant and high temperature
Agent is determined, by carrying out mixed at high speed to PET resin, toughener, antioxidant and high-temperature stabilizer in high-speed mixer, using this
PET sebific ducts prepared by method, not only significantly improve resistance to low temperature, and enhance ageing resistance, enhance PET strands
Compliance, the toughness of PET sebific ducts when enhancing high temperature, reduce the probability of its embrittlement.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is not departing from the principle and objective of the present invention
In the case of above-described embodiment can be changed within the scope of the invention, change, replace and modification.
Claims (6)
1. a kind of preparation method of PET sebific ducts, it is characterised in that comprise the following steps：
S1, by PET resin drying process in a vacuum chamber, wherein the temperature control of the vacuum chamber is at 120 DEG C, drying process
Between be 4H；
S2, the PET resin after drying process in step S1 taken out and be placed in high-speed mixer from the vacuum chamber,
Toughener, antioxidant and high-temperature stabilizer are added in the high-speed mixer, makes the high-speed mixer work with to the PET
Resin, the toughener, the antioxidant and the high-temperature stabilizer carry out mixed at high speed, to form a mixed material, wherein,
The rotating speed of the high-speed mixer is 40 revs/min, and the temperature control of the high-speed mixer is in 15-35 DEG C of room temperature, the high speed
The 10 minutes time of mixing；
S3, the mixed material taken out from the high-speed mixer and be placed in an injection machine, be molded by injection machine
Shaping.
2. the preparation method of PET sebific ducts according to claim 1, it is characterised in that the toughener is PTT.
3. the preparation method of PET sebific ducts according to claim 1, it is characterised in that the antioxidant is Switzerland's vapour bar essence
Change.
4. the preparation method of PET sebific ducts according to claim 1, it is characterised in that the high-temperature stabilizer is poly phenol oxygen
Resin.
5. a kind of PET sebific ducts, it is characterised in that as prepared by the preparation method any one of claim 1-4.
6. a kind of aluminium electrolutic capacitor, it is characterised in that including aluminium electrolutic capacitor main body and the covering aluminium electrolutic capacitor
The PET sebific ducts of body surfaces, the PET sebific ducts are the PET sebific ducts described in claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638812.2A CN107498742A (en) | 2017-07-31 | 2017-07-31 | Its aluminium electrolutic capacitor of the preparation method and application of PET sebific ducts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710638812.2A CN107498742A (en) | 2017-07-31 | 2017-07-31 | Its aluminium electrolutic capacitor of the preparation method and application of PET sebific ducts |
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| Publication Number | Publication Date |
|---|---|
| CN107498742A true CN107498742A (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710638812.2A Pending CN107498742A (en) | 2017-07-31 | 2017-07-31 | Its aluminium electrolutic capacitor of the preparation method and application of PET sebific ducts |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075056A (en) * | 1988-12-15 | 1991-12-24 | Head Sportgerate Gesellschaft M.B.H. & Co. Ohg | Process for the production of a ball game racket frame |
| CN1642714A (en) * | 2002-03-18 | 2005-07-20 | 丰田自动车株式会社 | Laser-welded assembly |
| CN103497490A (en) * | 2013-09-27 | 2014-01-08 | 深圳市科聚新材料有限公司 | PET (polyethylene terephthalate) composite material and preparation method thereof |
| CN103554852A (en) * | 2013-10-30 | 2014-02-05 | 东莞市华炜塑胶制品有限公司 | PET (polyethylene terephthalate) heat-shrinkable bush and preparation method thereof |
-
2017
- 2017-07-31 CN CN201710638812.2A patent/CN107498742A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5075056A (en) * | 1988-12-15 | 1991-12-24 | Head Sportgerate Gesellschaft M.B.H. & Co. Ohg | Process for the production of a ball game racket frame |
| CN1642714A (en) * | 2002-03-18 | 2005-07-20 | 丰田自动车株式会社 | Laser-welded assembly |
| CN103497490A (en) * | 2013-09-27 | 2014-01-08 | 深圳市科聚新材料有限公司 | PET (polyethylene terephthalate) composite material and preparation method thereof |
| CN103554852A (en) * | 2013-10-30 | 2014-02-05 | 东莞市华炜塑胶制品有限公司 | PET (polyethylene terephthalate) heat-shrinkable bush and preparation method thereof |
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