CN103832030A - Polyester film for electronic information and preparation method for polyester film - Google Patents
Polyester film for electronic information and preparation method for polyester film Download PDFInfo
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- CN103832030A CN103832030A CN201410065739.0A CN201410065739A CN103832030A CN 103832030 A CN103832030 A CN 103832030A CN 201410065739 A CN201410065739 A CN 201410065739A CN 103832030 A CN103832030 A CN 103832030A
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Abstract
The invention provides a polyester film for electronic information and a preparation method for the polyester film. The polyester film consists of a top layer, a core layer and a bottom layer, wherein the core layer is made from polyethylene glycol terephthalate; each of the top layer and the bottom layer is prepared from 80 to 100 percent of master batch and 20 to 0 percent of polyethylene glycol terephthalate slices; the master batch is prepared from polyethylene glycol terephthalate, nano-silica and an antistatic agent. The prepared polyester film has a total thickness of 1 to 4 microns and surface static electricity being less than or equal to 1,000V, has the characteristics of low surface static electricity, high insulativity, high thermal stability and the like, is applied to a film coating layer of a dry film product of an electronic information PCB (printed circuit board), and has effects of oxygen isolation, layering and mechanical scratch prevention.
Description
Technical field
The present invention relates to thin film technique field, be specifically related to a kind of electronic information polyester film and preparation method thereof.
Background technology
Polyester film is taking PETG as raw material, adopts extrusion molding to make sheet, then the thin-film material of making through biaxial tension.Its mechanical performance is good, and rigidity, hardness and toughness are high, puncture-resistant, and rub resistance, high temperature resistant and low temperature, chemical proofing, oil resistivity, air-tightness and fragrance protectiveness are good, are one of conventional barrier laminated film base materials, the conventional cladding material that does boiling packaging.
Wherein, for the polyester film of the epiphragma layer of the dry film product of printed substrate (PBC), mainly play starvation, layering and avoid mechanical scuffing effect.This film effects on surface requires very harsh, require also comparatively strict to physical index, it can prevent by the electric discharge harm of film surface institute static electrification, prevent that dust or dust etc. are attracted to membrane surface, prevent from being adhered to and being caused the irregular of pattern by foreign matter, make stay in grade, and in the time that flat film is wound into spool shape, convenient operation.And the corona resistance of current existing polyester film is bad, the large and poor insulativity of its static, the epiphragma layer that can not be used on the printed substrate of electronic information is used.
Summary of the invention
The object of the present invention is to provide a kind of electronic information polyester film and preparation method thereof, reduce its static, and increase its insulating properties, thereby can be used for the epiphragma layer of printed substrate.
The present invention for the technical scheme that realizes its object and take is: a kind of electronic information polyester film, formed by top layer, sandwich layer and bottom, the material of described sandwich layer is PETG, the gross thickness of described polyester film is that 1 ~ 4 μ m, refractive index are 0.160 ~ 0.170, surface roughness is 0.075 ~ 0.115 μ m, and the volume resistance of polyester film is 1.0 × 10
15Ω m ~ 1.1 × 10
15Ω m, surface electrostatic≤1000V;
Described top layer is prepared from by weight percentage by master batch and poliester chip: master batch is 80 ~ 100%, and poliester chip is 20 ~ 0%; Described master batch is the mixture that the particle diameter be made up of PETG, nano silicon and antistatic additive is 1.5 ~ 1.9nm, and wherein in master batch, the concentration of nano silicon is that the weight of 4900 ~ 5100ppm, antistatic additive accounts for 4 ~ 8% of master batch gross weight;
Described bottom by master batch and poliester chip by weight percentage be prepared from: master batch is 80 ~ 100%wt, and poliester chip is 20 ~ 0%; Described master batch is the mixture that the particle diameter be made up of PETG, nano silicon and antistatic additive is 2.2 ~ 2.5nm, and wherein in master batch, the concentration of nano silicon is that the weight of 3300 ~ 3500ppm, antistatic additive accounts for 10 ~ 15% of master batch gross weight.
Further, the particle diameter of described nano silicon is for being not more than 10nm.
Further, described antistatic additive is titanium oxide, tin oxide, zinc oxide or mica sheet, and its particle diameter is for being not more than 100pm.
Another object of the present invention is to provide a kind of method of preparing above-mentioned electronic information polyester film, and step is as follows:
(1) poliester chip through fluid bed with the temperature fluidisation 15～30min of 150～170 DEG C after again drying tower with 150～170 DEG C dry 4～5 hours PETG dried feed;
(2) dried feed of PETG is placed in to main extruder and is heated into molten condition, obtain after filtration squeezing melt as the master of sandwich layer;
By proportioning by PETG dried feed and master batch in two auxiliary extruders through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain respectively the auxiliary crowded melt as top layer and bottom;
(3) the crowded melt of master and two auxiliary crowded melts are converged and extrude blend melt in three layers of die head, it converges extrusion temperature is 270～290 DEG C;
(4) blend melt in (3) is become to slab through cold roll forming Electrostatic Absorption, then obtain successively the electronic information polyester film of three-layer structure through longitudinal stretching, cross directional stretch; The voltage that its Electrostatic Absorption adopts is that 7.5-9.0kV, electric current are that 6-8mA, hauling speed are 10 ± 1mm/mim.
Compared with prior art, beneficial effect of the present invention has:
1, polyester film of the present invention is to adopt three-layer co-extruded formation, its vertical, horizontal thermal contraction equilibrium, and reduce the thickness of film, making its gross thickness is 1 ~ 4 μ m, in reducing polyester film thickness, improves its overall performance.
2, due to the top layer of film of the present invention and the material of bottom be by master batch and poliester chip by weight percentage be prepared from, improved the antistatic behaviour of the upper and lower surfacing of this polyester film, the volume resistance that makes film of the present invention is 1.0 × 10
15Ω m ~ 1.1 × 10
15Ω m, surface electrostatic≤1000V; Thereby the electric discharge that greatly reduces film surface institute static electrification endangers, prevents dust or dust etc. and be attracted to membrane surface, prevent from being adhered to and being caused the irregular of pattern by foreign matter, improves quality.
3, mature production technology of the present invention, has very strong operability, has adapted to well the demand of suitability for industrialized production.
Detailed description of the invention
Embodiment 1:
(1) poliester chip is obtained to PETG dried feed at drying tower for dry 5 hours with 150 DEG C again after fluid bed is with the temperature fluidisation 30min of 150 DEG C;
(2) PETG dried feed is placed in to main extruder and is heated into molten condition, obtain after filtration squeezing melt as the master of sandwich layer;
(3) particle diameter of being made up of PETG, nano silicon and titanium oxide is the master batch of 1.5nm, and in master batch, the concentration of nano silicon is that 4900ppm, particle diameter are 8m; The particle diameter of titanium oxide is 9pm, and its weight accounts for gross weight 4%;
By PETG dried feed 20% in above-mentioned master batch 80% and (1) in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as top layer;
(4) master batch that the particle diameter of being made up of PETG, nano silicon and titanium oxide mica sheet is 2.2nm, in master batch, the concentration of nano silicon is that 3300ppm, particle diameter are 8m; The particle diameter of titanium oxide is 9pm, and its weight accounts for gross weight 10%;
By PETG dried feed 20% in above-mentioned master batch 80% and (1) in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as bottom;
(5) the main melt that squeezes in (2) is converged and extrudes blend melt respectively with the auxiliary crowded melt in (3), (4) in three layers of die head, it converges extrusion temperature is 270 DEG C;
(6) be that 7.5kV, electric current are that the cold roll forming Electrostatic Absorption that 6mA, hauling speed are 10 ± 1mm/mim becomes slab by blend melt in (5) through overvoltage, obtain successively again the electronic information polyester film of three-layer structure through longitudinal stretching, cross directional stretch, this polyester film gross thickness is that 1 μ m, refractive index are 0.160, surface roughness is 0.075 μ m, and the volume resistance of polyester film is 1.0 × 10
15Ω m, surface electrostatic≤1000V.
Embodiment 2:
(1) poliester chip is obtained to PETG dried feed at drying tower for dry 4 hours with 170 DEG C again after fluid bed is with the temperature fluidisation 15min of 170 DEG C;
(2) dried feed of PETG is placed in to main extruder and is heated into molten condition, obtain after filtration squeezing melt as the master of sandwich layer;
(3) particle diameter of being made up of PETG, nano silicon and mica sheet is the master batch of 1.7m, and in master batch, the concentration of nano silicon is that 5100ppm, particle diameter are 10nm; The particle diameter of mica sheet is 100pm, and its weight accounts for gross weight 8%;
By above-mentioned master batch 100% in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as top layer;
(4) master batch that is 2.3m by the particle diameter of being made by PETG, nano silicon and mica sheet, in master batch, the concentration of nano silicon is that 3500ppm, particle diameter are 10nm; The particle diameter of mica sheet is 100pm, and its weight accounts for gross weight 15%;
By above-mentioned master batch 100% in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as bottom;
(5) the main melt that squeezes in (2) is converged and extrudes blend melt respectively with the auxiliary crowded melt in (3), (4) in three layers of die head, it converges extrusion temperature is 290 DEG C;
(6) be that 9.0kV, electric current are that the cold roll forming Electrostatic Absorption that 8mA, hauling speed are 10 ± 1mm/mim becomes slab by blend melt in (5) through overvoltage, obtain successively again the electronic information polyester film of three-layer structure through longitudinal stretching, cross directional stretch, this polyester film gross thickness is that 4 μ m, refractive index are 0.170, surface roughness is 0.115 μ m, and the volume resistance of polyester film is 1.1 × 10
15Ω m, surface electrostatic≤1000V.
Embodiment 3:
(1) poliester chip is obtained to PETG dried feed at drying tower for dry 4.5 hours with 160 DEG C again after fluid bed is with the temperature fluidisation 20min of 160 DEG C;
(2) dried feed of PETG is placed in to main extruder and is heated into molten condition, obtain after filtration squeezing melt as the master of sandwich layer;
(3) master batch that is 1.9nm by the particle diameter of being made by PETG, nano silicon and zinc oxide, in master batch, the concentration of nano silicon is that 5000ppm, particle diameter are 90nm; The particle diameter of titanium oxide, tin oxide, zinc oxide or mica sheet is 80pm, and its weight accounts for gross weight 6%;
By PETG dried feed 10% in above-mentioned master batch 90% and (1) in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as top layer;
(4) master batch that is 2.5nm by the particle diameter of being made by PETG, nano silicon and oxidation zinc metal sheet, in master batch, the concentration of nano silicon is that 3400ppm, particle diameter are 90nm; The particle diameter of zinc oxide is 80pm, and its weight accounts for gross weight 12%;
By PETG dried feed 10% in above-mentioned master batch 90% and (1) in an auxiliary extruder through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain the auxiliary crowded melt as bottom;
(5) the main melt that squeezes in (2) is converged and extrudes blend melt respectively with the auxiliary crowded melt in (3), (4) in three layers of die head, it converges extrusion temperature is 280 DEG C;
(6) be that 8.0kV, electric current are that the cold roll forming Electrostatic Absorption that 7mA, hauling speed are 10 ± 1mm/mim becomes slab by blend melt in (5) through overvoltage, obtain successively again the electronic information polyester film of three-layer structure through longitudinal stretching, cross directional stretch, this polyester film gross thickness is that 3 μ m, refractive index are 0.160, surface roughness is 0.10 μ m, and the volume resistance of polyester film is 1.0 × 10
15Ω m, surface electrostatic≤1000V.
The above, be only preferred embodiment of the present invention, not the present invention done to any type of restriction.Any simple modification, equivalent variations and modification that every foundation technology of the present invention and method essence are done above embodiment, all still belong in the scope of technology of the present invention and method scheme.
Claims (4)
1. an electronic information polyester film, formed by top layer, sandwich layer and bottom, the material of described sandwich layer is PETG, it is characterized in that: the gross thickness of described polyester film is that 1 ~ 4 μ m, refractive index are 0.160 ~ 0.170, surface roughness is 0.075 ~ 0.115 μ m, and the volume resistance of polyester film is 1.0 × 10
15Ω m ~ 1.1 × 10
15Ω m, surface electrostatic≤1000V;
Described top layer is prepared from by weight percentage by master batch and poliester chip: master batch is 80 ~ 100%, and poliester chip is 20 ~ 0%; Described master batch is the mixture that the particle diameter be made up of PETG, nano silicon and antistatic additive is 1.5 ~ 1.9nm, and wherein in master batch, the concentration of nano silicon is that the weight of 4900 ~ 5100ppm, antistatic additive accounts for 4 ~ 8% of master batch gross weight;
Described bottom by master batch and poliester chip by weight percentage be prepared from: master batch is 80 ~ 100%wt, and poliester chip is 20 ~ 0%; Described master batch is the mixture that the particle diameter be made up of PETG, nano silicon and antistatic additive is 2.2 ~ 2.5nm, and wherein in master batch, the concentration of nano silicon is that the weight of 3300 ~ 3500ppm, antistatic additive accounts for 10 ~ 15% of master batch gross weight.
2. electronic information polyester film according to claim 1, is characterized in that: the particle diameter of described nano silicon is for being not more than 10nm.
3. electronic information polyester film according to claim 1, is characterized in that: described antistatic additive is titanium oxide, tin oxide, zinc oxide or mica sheet, and its particle diameter is for being not more than 100pm.
4. a method for polyester film for electronic information as claimed in claim 1 in preparing, is characterized in that: step is as follows:
(1) poliester chip through fluid bed with the temperature fluidisation 15～30min of 150～170 DEG C after again drying tower with 150～170 DEG C dry 4～5 hours PETG dried feed;
(2) dried feed of PETG is placed in to main extruder and is heated into molten condition, obtain after filtration squeezing melt as the master of sandwich layer;
By proportioning by PETG dried feed and master batch in two auxiliary extruders through melting, vacuumize after processing, refilter moisture content and the impurity removed in raw material and obtain respectively the auxiliary crowded melt as top layer and bottom;
(3) the crowded melt of master and two auxiliary crowded melts are converged and extrude blend melt in three layers of die head, it converges extrusion temperature is 270～290 DEG C;
(4) blend melt in (3) is become to slab through cold roll forming Electrostatic Absorption, then obtain successively the electronic information polyester film of three-layer structure through longitudinal stretching, cross directional stretch; The voltage that its Electrostatic Absorption adopts is that 7.5-9.0kV, electric current are that 6-8mA, hauling speed are 10 ± 1mm/mim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410065739.0A CN103832030B (en) | 2014-02-26 | 2014-02-26 | A kind of electronic information polyester film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410065739.0A CN103832030B (en) | 2014-02-26 | 2014-02-26 | A kind of electronic information polyester film and preparation method thereof |
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| CN103832030A true CN103832030A (en) | 2014-06-04 |
| CN103832030B CN103832030B (en) | 2016-04-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079766A (en) * | 2016-06-29 | 2016-11-09 | 安徽国风塑业股份有限公司 | Thermal-adhering thermal equilibrium type BOPP thin film and processing technology thereof in a kind of mould |
| CN107474497A (en) * | 2017-07-31 | 2017-12-15 | 安徽铜爱电子材料有限公司 | Low electrostatic heat transfer printing carbon tape biaxially oriented polyester film and preparation method thereof |
| CN110682649A (en) * | 2018-07-04 | 2020-01-14 | 康利源科技（天津）股份有限公司 | PET film structure and production process |
| CN110696504A (en) * | 2019-10-09 | 2020-01-17 | 安徽国风塑业股份有限公司 | TTR (thermal transfer ribbon) biaxially oriented polyester base film for color printing and preparation method thereof |
| CN113829715A (en) * | 2021-09-23 | 2021-12-24 | 安徽铜爱电子材料有限公司 | Polyester film for capacitor and preparation method thereof |
| CN115447236A (en) * | 2022-10-31 | 2022-12-09 | 广东鑫瑞新材料科技有限公司 | Polyester film for lithium battery diaphragm process protection and preparation method thereof |
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| JPH0358318A (en) * | 1989-07-27 | 1991-03-13 | Fuji Photo Film Co Ltd | Magnetic recording medium |
| CN1397077A (en) * | 2000-11-29 | 2003-02-12 | 帝人株式会社 | Polyester film for capacitors |
| CN102543433A (en) * | 2012-01-05 | 2012-07-04 | 安徽国风塑业股份有限公司 | BOPET for ultra-thin weather-proof balanced type capacitor and manufacturing method thereof |
-
2014
- 2014-02-26 CN CN201410065739.0A patent/CN103832030B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0358318A (en) * | 1989-07-27 | 1991-03-13 | Fuji Photo Film Co Ltd | Magnetic recording medium |
| CN1397077A (en) * | 2000-11-29 | 2003-02-12 | 帝人株式会社 | Polyester film for capacitors |
| CN102543433A (en) * | 2012-01-05 | 2012-07-04 | 安徽国风塑业股份有限公司 | BOPET for ultra-thin weather-proof balanced type capacitor and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079766A (en) * | 2016-06-29 | 2016-11-09 | 安徽国风塑业股份有限公司 | Thermal-adhering thermal equilibrium type BOPP thin film and processing technology thereof in a kind of mould |
| CN107474497A (en) * | 2017-07-31 | 2017-12-15 | 安徽铜爱电子材料有限公司 | Low electrostatic heat transfer printing carbon tape biaxially oriented polyester film and preparation method thereof |
| CN110682649A (en) * | 2018-07-04 | 2020-01-14 | 康利源科技（天津）股份有限公司 | PET film structure and production process |
| CN110696504A (en) * | 2019-10-09 | 2020-01-17 | 安徽国风塑业股份有限公司 | TTR (thermal transfer ribbon) biaxially oriented polyester base film for color printing and preparation method thereof |
| CN113829715A (en) * | 2021-09-23 | 2021-12-24 | 安徽铜爱电子材料有限公司 | Polyester film for capacitor and preparation method thereof |
| CN115447236A (en) * | 2022-10-31 | 2022-12-09 | 广东鑫瑞新材料科技有限公司 | Polyester film for lithium battery diaphragm process protection and preparation method thereof |
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| Publication number | Publication date |
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| CN103832030B (en) | 2016-04-06 |
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Address after: 230088 No.1000, Mingchuan Road, high tech Zone, Hefei City, Anhui Province Patentee after: Anhui Guofeng New Material Co.,Ltd. Address before: Tianzhi Road, national high tech Industrial Development Zone, Hefei City, Anhui Province, No. 36 230088 Patentee before: ANHUI GUOFENG PLASTIC CO.,LTD. |
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