CN105522723A - Method for manufacturing two-point eight-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film - Google Patents
Method for manufacturing two-point eight-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film Download PDFInfo
- Publication number
- CN105522723A CN105522723A CN201610077718.XA CN201610077718A CN105522723A CN 105522723 A CN105522723 A CN 105522723A CN 201610077718 A CN201610077718 A CN 201610077718A CN 105522723 A CN105522723 A CN 105522723A
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- China
- Prior art keywords
- biaxially oriented
- thin
- ultra
- thermostable
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 19
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000004743 Polypropylene Substances 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- -1 polypropylene Polymers 0.000 claims abstract description 7
- 229920001155 polypropylene Polymers 0.000 claims abstract description 7
- 239000000155 melt Substances 0.000 claims abstract description 4
- 239000010408 film Substances 0.000 claims description 25
- 239000010409 thin film Substances 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 4
- 238000003851 corona treatment Methods 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000000048 melt cooling Methods 0.000 claims 1
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a method for manufacturing a 2.8-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film for a capacitor, which is characterized in that a polypropylene resin material with the isotacticity of 95-98%, the ash content of less than 30ppm and the melt index of 2.0g/10 min-3.2 g/10min is adopted, melted by an extruder, extruded by a die head, cooled and formed by a cooling roller and a cast sheet air knife, longitudinally stretched at a stretching ratio of 4.5-5 times and transversely stretched at 8-9 times to prepare the ultrathin high-temperature-resistant polypropylene capacitor film; the capacitor film prepared by the invention has the characteristics of light weight, small loss, good stability, excellent electrical insulation and mechanical properties and the like, and the manufactured capacitor with the same capacity not only has reduced volume, but also has more obvious cost advantage.
Description
Technical field
The invention belongs to the preparation method of the macromolecular compound be only obtained by reacting with carbon-to-carbon unsaturated bond, relate to the manufacture method of a kind of capacitor with ultra-thin thermostable biaxially oriented polypropylene capactive film, be specially adapted to the manufacture that thickness is the ultra-thin thermostable biaxially oriented polypropylene capactive film of capacitor of 2.8 microns, obtained polypropylene capactive film is applicable to the manufacture of the capacitor product that capacity is large, volume is little.
Background technology
Biaxially oriented polypropylene capacitor thin film is owing to being apolar medium material, have that light weight, loss are little, the feature such as good stability, electrical insulating property and good mechanical performance manufactures the identical capacitor of capacity, use ultra-thin capacitor thin film, volume can obviously reduce, be the perfect medium material of Low-voltage Electronic capacitor and high-voltage power capacitor, be widely used in capacitor every profession and trade.Along with the development of society, the progress of science and technology, Power capacitor industry requires more and more less to the size of capacitor, increasing to the requirement of capacity.The capacitor that manufacture capacity is identical, uses the capacitor thin film of relatively Thin Specs, and not only its volume can reduce, and cost advantage is more obvious.
Summary of the invention
The object of the present invention is to provide a kind of ultra-thin, thermally-stabilised good, high temperature resistant, ultra-thin thermostable biaxially oriented polypropylene capactive film that hot strength is large and production method thereof.
Technical solution of the present invention is: a kind of ultra-thin thermostable biaxially oriented polypropylene capactive film, it is characterized in that: horizontal percent thermal shrinkage≤0.5%, longitudinal percent thermal shrinkage≤3.6%, transverse tensile strength >=250MPa, longitudinal tensile strength >=200MPa at 120 DEG C when standing 15 minutes, transverse modulus of elasticity >=3500N/mm2, longitudinal modulus of elasticity >=2000N/mm2, the capacitor that manufacture capacity is identical, use ultra-thin capacitor thin film, volume can obviously reduce.
A kind of specific embodiments of 2.8 microns of ultra-thin thermostable biaxially oriented polypropylene capactive films is as follows:
(1) feed: power taking work grade polypropylene raw material, by unit of vacuum material-suction system, above metal detector is drawn onto extruder in hopper, carries out autofeed;
(2) extrusion plasticizing: extruder temperature is 210 DEG C ~ 245 DEG C, pp material by after extruder by heat fused, and extrude and form the uniform viscous state melt of melting;
(3) measure: viscous state melt after measuring pump, become isothermal, equipressure, equivalent melt enter filter;
(4) filter: adopt 10 micron screen to filter melt, the impurity in elimination melt and non-fusant;
(5) die head sizing: die head each district temperature is all set as 245 DEG C, by the melt of the isothermal after filtration, equipressure, equivalent by die head, forms sheet melt;
(6) cooling forming: sharp cooling roll temperature is set to 98 DEG C, sheet melt is attached on cold roller by the air pressure note of air knife, and form the sheet containing required crystallization, the thickness of sheet is at 120 microns ~ 126 microns;
(7) biaxial tension: by the sheet of 120 microns ~ 126 microns, is 120 DEG C ~ 137 DEG C in temperature, carries out longitudinal stretching under the condition of longitudinal stretching than 4.5 ~ 5.0 times; Then be 158 DEG C ~ 170 DEG C in temperature, carry out cross directional stretch under the condition of cross directional stretch than 8 ~ 9 times, be i.e. obtained 2.8 microns of ultra-thin thermostable biaxially oriented polypropylene capactive films;
(8) obtained film also needs to carry out to cool, trimming, sided corona treatment, timeliness, the operation such as to cut, final obtained required film product.
The present invention has the following advantages:
1, employing isotacticity is 95% ~ 98%, content of ashes is less than 30ppm, melt index is the polyacrylic resin material of 2.0g/10min ~ 3.2g/10min, by extruder melting, die head is extruded, through chill roll and slab air knife cooling forming, then with 4.5 ~ 5 times of draw ratio longitudinal stretchings, with ultra-thin high temperature resistant polypropylene capactive film obtained after 8 ~ 9 times of cross directional stretch;
2, the features such as light weight, loss are little, good stability, electrical insulating property and good mechanical performance that adopt the capacitor thin film that obtains of the present invention to have, manufacture the capacitor that capacity is identical, not only its volume can reduce, and cost advantage is more obvious.
Detailed description of the invention
A kind of specific embodiments of 2.8 microns of ultra-thin thermostable biaxially oriented polypropylene capactive films is as follows:
(1) feed: power taking work grade polypropylene raw material, by unit of vacuum material-suction system, above metal detector is drawn onto extruder in hopper, carries out autofeed;
(2) extrusion plasticizing: extruder temperature is 210 DEG C ~ 245 DEG C, pp material by after extruder by heat fused, and extrude and form the uniform viscous state melt of melting;
(3) measure: viscous state melt after measuring pump, become isothermal, equipressure, equivalent melt enter filter;
(4) filter: adopt 10 micron screen to filter melt, the impurity in elimination melt and non-fusant;
(5) die head sizing: die head each district temperature is all set as 245 DEG C, by the melt of the isothermal after filtration, equipressure, equivalent by die head, forms sheet melt;
(6) cooling forming: sharp cooling roll temperature is set to 98 DEG C, sheet melt is attached on cold roller by the air pressure note of air knife, and form the sheet containing required crystallization, the thickness of sheet is at 120 microns ~ 126 microns;
(7) biaxial tension: by the sheet of 120 microns ~ 126 microns, is 120 DEG C ~ 137 DEG C in temperature, carries out longitudinal stretching under the condition of longitudinal stretching than 4.5 ~ 5.0 times; Then be 158 DEG C ~ 170 DEG C in temperature, carry out cross directional stretch under the condition of cross directional stretch than 8 ~ 9 times, be i.e. obtained 2.8 microns of ultra-thin thermostable biaxially oriented polypropylene capactive films;
(8) obtained film also needs to carry out to cool, trimming, sided corona treatment, timeliness, the operation such as to cut, final obtained required film product.
Claims (7)
1. a ultra-thin thermostable biaxially oriented polypropylene capactive film, it is characterized in that: horizontal percent thermal shrinkage≤0.5%, longitudinal percent thermal shrinkage≤3.6%, transverse tensile strength >=250MPa, longitudinal tensile strength >=200MPa at 120 DEG C when standing 15 minutes, transverse modulus of elasticity >=3500N/mm2, longitudinal modulus of elasticity >=2000N/mm2.
2. a production method for ultra-thin thermostable biaxially oriented polypropylene capactive film, its feature comprises the steps:
(1) feed: employing isotacticity is 95% ~ 98%, content of ashes is less than 30ppm, melt index is the polyacrylic resin material of 2.0g/10min ~ 3.2g/10min;
(2) melt extrude: pp material is dissolved by extruder heating, forms isothermal and isobaric melt through die head;
(3) melt cooling slab is shaping: by the melt of isothermal and isobaric through chill roll cooling and shaping, obtained sheet;
(4) biaxial tension: obtained slab is carried out preheating, stretching, sizing by longitudinal stretching machine, obtained thick film; Again thick film is carried out preheating, stretching, sizing by transverse drawing mill, obtained film.
3. the capacitor according to claim 2 manufacture method of ultra-thin thermostable biaxially oriented polypropylene film, is characterized in that: the pp material described in step (1) adopts electrician's grade polypropylene.
4. the manufacture method of ultra-thin thermostable biaxially oriented polypropylene film of the capacitor according to Claims 2 or 3, is characterized in that: the extruder temperature described in step (2) 230 DEG C ~ 245 DEG C; Die head temperature 245 DEG C.
5. the manufacture method of ultra-thin thermostable biaxially oriented polypropylene film of the capacitor according to Claims 2 or 3, is characterized in that: the chill-roll temperature described in step (3) is 94 DEG C ~ 98 DEG C.
6. the manufacture method of ultra-thin thermostable biaxially oriented polypropylene film of the capacitor according to Claims 2 or 3, is characterized in that: the vertical machine drawing temperature described in step (4) is 120 DEG C ~ 146 DEG C; Transverse stretching machine temperature is 158 DEG C ~ 171 DEG C.
7. the manufacture method of ultra-thin thermostable biaxially oriented polypropylene film of the capacitor according to Claims 2 or 3, is characterized in that: the ultra-thin thermostable biaxially oriented capacitor thin film of formation also needs through sided corona treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077718.XA CN105522723A (en) | 2016-02-04 | 2016-02-04 | Method for manufacturing two-point eight-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077718.XA CN105522723A (en) | 2016-02-04 | 2016-02-04 | Method for manufacturing two-point eight-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105522723A true CN105522723A (en) | 2016-04-27 |
Family
ID=55765407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610077718.XA Pending CN105522723A (en) | 2016-02-04 | 2016-02-04 | Method for manufacturing two-point eight-micron ultrathin high-temperature-resistant biaxially oriented polypropylene capacitor film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105522723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863862A (en) * | 2017-03-04 | 2017-06-20 | 江苏中立方实业有限公司 | The capacitor method of production of high-crystallinity Biaxially oriented polypropylene capactive film |
| CN111086181A (en) * | 2019-12-28 | 2020-05-01 | 北京星和众工设备技术股份有限公司 | Preparation method of lithium battery diaphragm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120008251A1 (en) * | 2010-07-12 | 2012-01-12 | Wei-Ching Yu | Film capacitors comprising melt-stretched films as dielectrics |
| CN102751091A (en) * | 2012-07-06 | 2012-10-24 | 江苏中立方实业有限公司 | High-temperature resistant ultrathin polypropylene metalized capacitor film for capacitor |
| CN104684732A (en) * | 2012-10-08 | 2015-06-03 | 特里奥凡德国有限公司及两合公司 | Microporous separator film having homogeneous porosity and greater resistance to puncturing |
-
2016
- 2016-02-04 CN CN201610077718.XA patent/CN105522723A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120008251A1 (en) * | 2010-07-12 | 2012-01-12 | Wei-Ching Yu | Film capacitors comprising melt-stretched films as dielectrics |
| CN102751091A (en) * | 2012-07-06 | 2012-10-24 | 江苏中立方实业有限公司 | High-temperature resistant ultrathin polypropylene metalized capacitor film for capacitor |
| CN104684732A (en) * | 2012-10-08 | 2015-06-03 | 特里奥凡德国有限公司及两合公司 | Microporous separator film having homogeneous porosity and greater resistance to puncturing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863862A (en) * | 2017-03-04 | 2017-06-20 | 江苏中立方实业有限公司 | The capacitor method of production of high-crystallinity Biaxially oriented polypropylene capactive film |
| CN111086181A (en) * | 2019-12-28 | 2020-05-01 | 北京星和众工设备技术股份有限公司 | Preparation method of lithium battery diaphragm |
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Application publication date: 20160427 |