CN106608085B - A kind of preparation method of antiultraviolet polyester film - Google Patents

A kind of preparation method of antiultraviolet polyester film Download PDF

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CN106608085B
CN106608085B CN201510696072.9A CN201510696072A CN106608085B CN 106608085 B CN106608085 B CN 106608085B CN 201510696072 A CN201510696072 A CN 201510696072A CN 106608085 B CN106608085 B CN 106608085B
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film
polyester
preparation
raw material
nano cerium
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CN106608085A (en
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李佳怡
李学成
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Shanghai Huzheng New Materials Co.,Ltd.
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SHANGHAI HUZHENG NANO-TECH Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/02—Temperature
    • 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
    • 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
    • C08L2203/16—Applications used for films
    • 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

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of preparation method of antiultraviolet polyester film, including preparing nano cerium colloid, preparing nano cerium polyester PET slice and membrane coextrusion mold, it is molded with the three-layer co-extruded equipment membrane of biaxial tension.Good by the antiultraviolet polyester film transparency made from the method for the present invention, VLT is more than 88%, absorption of UV 100%, long-acting good weatherability, and QUB is more than 2000 hours, can be widely used for the fields such as various advertisements, automobile and building.

Description

A kind of preparation method of antiultraviolet polyester film
Technical field
The present invention relates to a kind of preparation methods of antiultraviolet polyester PET thin film.
Background technology
Excessive ultraviolet light not only damages the body to people, but also have to a variety of materials being exposed under sunlight Destructive effect so that the color aging of surfaces such as various buildings, automobile shortens the working life, therefore ultraviolet radiation absorption function Polyester film increasingly receive the concern of people
The technology of preparing of existing uvioresistant film having disclosed mainly is led to using existing polyester film surface It is relatively common to cross the polyester film that the mode coated is realized, such as Chinese patent CN102180599A, high grade of transparency cerium oxide-oxidation It in the preparation method of silicon ultraviolet radiation absorption film, discloses and is coated in glass substrate using cerium oxide-silicon oxide colloidal sol, through dry The method of dry film forming prepares anti-ultraviolet polyester film, and the film prepared in this way is not only uvioresistant effect and pays no attention to Think, and preparation process too backwardness is not easy industrialization production.
In Chinese Patent Application No. is CN104129127A, a kind of antiultraviolet film and preparation method thereof, disclose The method coated in polyester film surface after coating is prepared using inorganic material such as ATO, ITO, VO2, WO3, and to prepare uvioresistant thin Film, this preparation method and technique productions process are too numerous and diverse, and time-consuming, power consumption, consumption manpower production cost are too high, and quality is not allowed It is easy to control, bubble, glue point, wrinkle etc. are easily generated in the production and use process.
It is thin in a kind of window film anti-ultraviolet polyesters of Chinese Patent Application No. CN201510075357.0 applied In film and preparation method thereof, it is that main material is directly melted by modified to disclose and use the seat of organic uv absorbers phenylpropyl alcohol three Melt polyester film prepared by the method for extrusion, this polyester film is main because using organic benzotriazole UV absorbers It is that weatherability is poor to want defect, and be not as durable as inorganic or Inorganic whisker ultra-violet absorber, more major defect is ultraviolet Line absorption wave frequency is relatively narrow, and the dosage of material is big, and ultraviolet radiation absorption effect is very limited, and effect is absorbed between 280~380nm Fruit is good, re-extends into 400nm more without effect.
Invention content
For the numerous defects and deficiency of the prior art, according to an embodiment of the invention, it is desirable to be able to which providing one kind can inhale The preparation method of the antiultraviolet polyester PET thin film of the UV resistance in 220nm~400nm wavelength bands is received, by this hair The polyester PET thin film transparency is good made from bright method, and mist degree is small, long-acting, good weatherability, of low cost, has important society Value and economic value.
According to embodiment, a kind of preparation method of antiultraviolet polyester film provided by the invention is walked including following technique Suddenly：
(1) preparation of nano cerium colloid
1. cerous nitrate 1~5% is weighed by mass percentage, 2. deionized water 1~50%, 3. pyrrolidones 1~50%, 4. Methanol 20%~90%, 5. triethanolamine 1~10%；It is sequentially placed into and 1. 2. 3. 4. stirs afterwards in a kettle, add 5., adjust Save PH=8~8.5 of reactant in reaction kettle；70-90 DEG C is heated to, after the reaction was complete, takes out the first alcohol and water in reaction kettle, Nitrate ion is washed off with acetone, suitable ethyl alcohol dilution is added in, the nano cerium colloid that cerium content is 5% is made；
(2) nano cerium polyester PET slice is prepared
The nano cerium colloid 10%~20% that 1. cerium content is 5% is weighed by mass percentage, 2. film grade FG-600 polyester Slice 80%~90%；Being put into twin worm extruding granulator after being 1. 2. sufficiently mixed stirring, 260~270 DEG C are heated to, is squeezed Go out, cool down, slice obtains nano cerium polyester PET slice；
(3) membrane coextrusion mold
Nano cerium polyester PET be sliced and film grade FG-600 polyester slices according to mass percent 10%~40% and 60%~ 90% blending, as the core layer raw material of film, into single screw extrusion machine, melt extrudate enters die head；
Film grade FG-600 polyester slices are after drying and processing, as the upper and lower top layer raw material of film, into Single screw extrusion Machine, melt extrudate enter die head；
The core layer raw material of film and upper and lower the top layer raw material coextrusion mold after die head converges, it is cold by 10~40 DEG C of chilling rollers But after, first through 60~100 DEG C of preheatings, draw ratio is set as 2~5, longitudinal stretching；Again through 70~130 DEG C of preheatings, draw ratio It is set as 2.5~5.5, after stretching horizontally through supercooling, static elimination, winding and cutting, it is 16um~100um's that thickness, which is made, Antiultraviolet polyester film.
According to one embodiment, the step of the preparation method of the aforementioned antiultraviolet polyester film of the present invention in (1), by quality Percentage weighs 1. cerous nitrate 3%；2. deionized water 12%；3. pyrrolidones 20%；4. methanol 60%；5. triethanolamine 5%.
According to one embodiment, the step of the preparation method of the aforementioned antiultraviolet polyester film of the present invention in (2), by quality Percentage weighs the nano cerium colloid 20% that 1. cerium content is 5%, 2. film grade FG-600 polyester slices 80%.
According to one embodiment, the step of the preparation method of the aforementioned antiultraviolet polyester film of the present invention in (3), the core of film Layer raw material, by vacuum drum is pre-crystallized, enters single screw extrusion machine after heating, drying, the melting extrusion at 275 DEG C, melting is squeezed Go out object by prefilter, metering pump, main filter, into die head；The upper and lower top layer raw material of film is tied in advance by vacuum drum Enter single screw extrusion machine after brilliant, heating, drying, the melting extrusion at 275 DEG C, melt extrudate is by prefilter, metering Pump, main filter, into die head.
Relative to the prior art, the method for the present invention uses nano cerium antiultraviolet new material, and prepared polyester film is prevented Ultraviolet light effect is good, and ultraviolet isolating rate is 100%, it is seen that light transmission rate is 86%~90%, and long-acting durability is good, and QUB is big In 2000 hours, absorption ultra-violet bands were wide, and 200~450nm band ultraviolet assimilation effects are excellent, transparent good, ultraviolet light Absorptivity is high, can be widely used for the fields such as various advertisements, automobile and building.
Description of the drawings
Fig. 1 is that the UV of antiultraviolet polyester film made from 1-4 of the embodiment of the present invention absorbs barrier curve graph.
Fig. 2 is antiultraviolet polyester film UV reflections barrier curve graph (embodiment 2-4 systems made from the embodiment of the present invention 1 The antiultraviolet polyester film UV reflection barriers curve identical obtained).
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is further explained.These embodiments are interpreted as being only used for It is bright the present invention rather than limit the scope of the invention.After the content of the invention recorded has been read, art technology Personnel can make various changes or modifications the present invention, these equivalence changes and modification equally fall into the claims in the present invention and limited Fixed range.
Raw material used in following embodiment of the present invention is as being commercial product without especially mark.The unit " degree " of temperature It is degree Celsius.
Embodiment 1
Weigh 1. cerous nitrate Ce (NO3)3·6H2O 300.0g；2. deionized water 1200.0g；3. pyrrolidones 2000.0g； 4. methanol 6000.0g；5. triethanolamine 500.0g.It is at the uniform velocity stirred 30 minutes being 1. 2. 3. 4. sequentially placed into glass reaction kettle, The PH controls for 5. adjusting reactant in reaction kettle are added to 8.5, temperature sets 80 degree, stirs 48 hours, completely after reaction, takes out Vacuum condenser shunt method takes out the first alcohol and water in reaction kettle, then washes reactant repeatedly with a large amount of acetone, adds A small amount of ethyl alcohol is diluted to the transparent nano cerium colloid that cerium content is 5%.
Weigh 1. nano cerium colloid 200.0g；2. film grade FG-600 polyester slices 800.0g.Being 1. 2. sufficiently mixed stirring After be put into twin worm extruding granulator, granulator heating temperature is transferred to 260~270 degree, by heating, squeeze out, cooling, cut Piece obtains nano cerium polyester PET slice.
Weigh 1. nano cerium polyester PET slice 100.0g；2. the film grade FG-600 polyester slices 900.0g of sinopec production. 1. 2. abundant blending and stirring is uniform, the mixture after 100 degree of 12h drying and processings, as the core layer raw material of film, by true Idle running drum is pre-crystallized, enters single screw extrusion machine after heating, drying, the melting extrusion under 275 degree, the melt extrudate warp of extrusion Prefilter, metering pump, main filter are crossed, into die head.Again film grade FG-600 polyester slices by 100 degree of drying in 12 hours After processing, as the top layer raw material of film, by vacuum drum is pre-crystallized, enters single screw extrusion machine after heating, drying, at 275 degree Lower melting extrusion, the melt extrudate of extrusion passes through prefilter, metering pump, main filter, into die head, then the sandwich layer by film Raw material and upper and lower top layer raw material, die head converge it is compound after for extrusion forming, after 32 degree chilling rollers cool down, through 90 degree in advance first Heat, draw ratio are set as under the conditions of 3.8, are preheated again in 99 degree of longitudinal stretchings, then through 99 degree, draw ratio is set as 4.6 Under part, at 109 degree again after stretching horizontally through supercooling, static elimination, winding, cutting, packaging obtains the anti-purple that thickness is 36um Outside line polyester film, core layer thickness 30um, upper and lower skin depth is 3um.
Functional test is carried out to the antiultraviolet polyester film according to usual method：Ultraviolet isolating rate 100%, it is seen that light Transmitance 90%.
As shown in Figure 1 and Figure 2, antiultraviolet polyester film made from the present embodiment is surveyed by spectrophotometer, absorbed It is wide with reflection ultra-violet bands, it is especially absorbed in 200~450nm band ultraviolets and reflecting effect is excellent.
Embodiment 2
The process and technique of preparation of nano cerium colloid and preparation nano cerium polyester PET slice are identical with embodiment 1.
Weigh 1. nano cerium polyester PET slice 150.0g；2. the film grade FG-600 polyester slices of sinopec production： 850.0g.1. 2. abundant blending and stirring is uniform, the mixture after 100 degree of 12h drying and processings, the sandwich layer as film is former Material, by vacuum drum is pre-crystallized, enters single screw extrusion machine, the melting extrusion under 275 degree, the melting of extrusion after heating, drying Extrudate is by prefilter, metering pump, main filter, into die head.Film grade FG-600 polyester slices are passed through 12 hours again After 100 degree of drying and processings, as the top layer raw material of film, by vacuum drum is pre-crystallized, enters Single screw extrusion after heating, drying Machine, the melting extrusion under 275 degree, the melt extrudate of extrusion passes through prefilter, metering pump, main filter, into die head, then By the core layer raw material of film and upper and lower top layer raw material, die head converge it is compound after for extrusion forming, after 32 degree chilling rollers coolings, First through 90 degree of preheatings, draw ratio is set as under the conditions of 3.8, is preheated again in 99 degree of longitudinal stretchings, then through 99 degree, draw ratio is set It is set under the conditions of 4.6, at 109 degree again after stretching horizontally through supercooling, static elimination, winding, cutting, packaging, obtaining thickness is The antiultraviolet polyester film of 36um, core layer thickness 30um, upper and lower skin depth is 3um.
Functional test is carried out to the antiultraviolet polyester film according to usual method：Ultraviolet isolating rate 100%, it is seen that light Transmitance 89%.
As shown in Figure 1 and Figure 2, antiultraviolet polyester film made from the present embodiment is surveyed by spectrophotometer, absorbed It is wide to reflect ultra-violet bands, is especially absorbed in 200~450nm band ultraviolets and reflecting effect is very excellent.
Embodiment 3
The process and technique of preparation of nano cerium colloid and preparation nano cerium polyester PET slice are identical with embodiment 1.
Weigh 1. nano cerium polyester PET slice 200.0g；2. the film grade FG-600 polyester slices 800.0g of sinopec production. 1. 2. abundant blending and stirring is uniform, the mixture after 100 degree of 12h drying and processings, as the core layer raw material of film, by true Idle running drum is pre-crystallized, enters single screw extrusion machine after heating, drying, the melting extrusion under 275 degree, the melt extrudate warp of extrusion Prefilter, metering pump, main filter are crossed, into die head.Again film grade FG-600 polyester slices by 100 degree of drying in 12 hours After processing, as the top layer raw material of film, by vacuum drum is pre-crystallized, enters single screw extrusion machine after heating, drying, at 275 degree Lower melting extrusion, the melt extrudate of extrusion passes through prefilter, metering pump, main filter, into die head, then the sandwich layer by film Raw material and upper and lower top layer raw material, die head converge it is compound after for extrusion forming, after 32 degree chilling rollers cool down, through 90 degree in advance first Heat, draw ratio are set as under the conditions of 3.8, are preheated again in 99 degree of longitudinal stretchings, then through 99 degree, draw ratio is set as 4.6 Under part, at 109 degree again after stretching horizontally through supercooling, static elimination, winding, cutting, packaging obtains the anti-purple that thickness is 36um Outside line polyester film, core layer thickness 30um, upper and lower skin depth is 3um.
Functional test is carried out to the antiultraviolet polyester film according to usual method：Ultraviolet isolating rate 100%, it is seen that light Transmitance 88%.
As shown in Figure 1 and Figure 2, antiultraviolet polyester film made from the present embodiment is surveyed by spectrophotometer, absorbed It is wide with reflection ultra-violet bands, it is especially absorbed in 200~450nm band ultraviolets and reflecting effect is very excellent.
Embodiment 4
The process and technique of preparation of nano cerium colloid and preparation nano cerium polyester PET slice are identical with embodiment 1.
Weigh 1. nano cerium polyester PET slice 250.0g；2. the film grade FG-600 polyester slices 750.0g of sinopec production； 1. 2. abundant blending and stirring is uniform, the mixture after 100 degree of 12h drying and processings, as the core layer raw material of film, by true Idle running drum is pre-crystallized, enters single screw extrusion machine after heating, drying, the melting extrusion under 275 degree, the melt extrudate warp of extrusion Prefilter, metering pump, main filter are crossed, into die head.Again film grade FG-600 polyester slices by 100 degree of drying in 12 hours After processing, as the top layer raw material of film, by vacuum drum is pre-crystallized, enters single screw extrusion machine after heating, drying, at 275 degree Lower melting extrusion, the melt extrudate of extrusion passes through prefilter, metering pump, main filter, into die head, then the sandwich layer by film Raw material and upper and lower top layer raw material, die head converge it is compound after for extrusion forming, after 32 degree chilling rollers cool down, through 90 degree in advance first Heat, draw ratio are set as under the conditions of 3.8, are preheated again in 99 degree of longitudinal stretchings, then through 99 degree, draw ratio is set as 4.6 Under part, at 109 degree again after stretching horizontally through supercooling, static elimination, winding, cutting, packaging obtains the anti-purple that thickness is 36um Outside line polyester film, core layer thickness 30um, upper and lower skin depth is 3um.
Functional test is carried out to the antiultraviolet polyester film according to usual method：Ultraviolet isolating rate 100%, it is seen that light Transmitance 87%.
As shown in Fig. 1 Fig. 2, antiultraviolet polyester film made from the present embodiment is surveyed by spectrophotometer, is absorbed It is wide with reflection ultra-violet bands, it is especially absorbed in 200~450nm band ultraviolets and reflecting effect is very excellent.

Claims (4)

1. a kind of preparation method of antiultraviolet polyester film, which is characterized in that comprise the technical steps that：
(1) preparation of nano cerium colloid
1. cerous nitrate 1~5% is weighed by mass percentage, 2. deionized water 1~50%, 3. pyrrolidones 1~50%, 4. methanol 20%~90%, 5. triethanolamine 1~10%；It is sequentially placed into and 1. 2. 3. 4. stirs afterwards in a kettle, add 5., adjust anti- Answer PH=8~8.5 of reactant in kettle；70-90 DEG C is heated to, after the reaction was complete, the first alcohol and water in reaction kettle is taken out, with third Ketone washes off nitrate ion, adds in suitable ethyl alcohol dilution, the nano cerium colloid that cerium content is 5% is made；
(2) nano cerium polyester PET slice is prepared
The nano cerium colloid 10%~20% that 1. cerium content is 5% is weighed by mass percentage, 2. film grade FG-600 polyester slices 80%~90%；Being put into twin worm extruding granulator after being 1. 2. sufficiently mixed stirring, 260~270 DEG C are heated to, is squeezed out, Cooling, slice obtain nano cerium polyester PET slice；
(3) membrane coextrusion mold
Nano cerium polyester PET is sliced and film grade FG-600 polyester slices are according to mass percent 10%~40% and 60%~90% Blending, as the core layer raw material of film, into single screw extrusion machine, melt extrudate enters die head；
Film grade FG-600 polyester slices are after drying and processing, as the upper and lower top layer raw material of film, into single screw extrusion machine, Melt extrudate enters die head；
The core layer raw material of film and upper and lower the top layer raw material coextrusion mold after die head converges, after 10~40 DEG C of chilling rollers cool down, First through 60~100 DEG C of preheatings, draw ratio is set as 2~5, longitudinal stretching；Again through 70~130 DEG C of preheatings, draw ratio setting It is 2.5~5.5, after stretching horizontally through supercooling, static elimination, winding and cutting, the anti-purple that thickness is 16um~100um is made Outside line polyester film.
2. the preparation method of antiultraviolet polyester film according to claim 1, which is characterized in that in step (1), by matter Amount percentage weighs 1. cerous nitrate 3%；2. deionized water 12%；3. pyrrolidones 20%；4. methanol 60%；5. triethanolamine 5%.
3. the preparation method of antiultraviolet polyester film according to claim 1 or 2, which is characterized in that in step (2), The nano cerium colloid 20% that 1. cerium content is 5% is weighed by mass percentage, 2. film grade FG-600 polyester slices 80%.
4. the preparation method of antiultraviolet polyester film according to claim 1 or 2, which is characterized in that in step (3), The core layer raw material of film, by vacuum drum is pre-crystallized, enters single screw extrusion machine after heating, drying, the melting extrusion at 275 DEG C, Melt extrudate is by prefilter, metering pump, main filter, into die head；The upper and lower top layer raw material of film turns by vacuum Enter single screw extrusion machine after the pre-crystallized, heating, drying of drum, the melting extrusion at 275 DEG C, melt extrudate by prefilter, Metering pump, main filter, into die head.
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DE10002169A1 (en) * 2000-01-20 2001-07-26 Mitsubishi Polyester Film Gmbh UV resistant polyester film, useful for the production of molded articles, has a mat covering layer comprising a homo- or co-polyethylene terephthalate and a sulfonate group containing polymer
CN104275889B (en) * 2013-07-03 2016-05-25 上海追光科技有限公司 High-performance nano compound heat-insulation film and preparation method thereof

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