CN112918055B

CN112918055B - Composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film and preparation method thereof

Info

Publication number: CN112918055B
Application number: CN202110036224.8A
Authority: CN
Inventors: 范和强; 陈正坚; 梁展盛; 楼涛; 朱涛
Original assignee: Hangzhou Heshun Technology Co ltd
Current assignee: Hangzhou Heshun Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2023-03-03
Anticipated expiration: 2041-01-12
Also published as: CN112918055A

Abstract

The invention provides a composite anti-fouling anti-ultraviolet heat-insulation heat-preservation polyester film and a preparation method thereof. According to the invention, through function optimization, on the basis that the film has heat insulation and heat preservation, the antifouling performance is compounded, and the film not only has stronger super-hydrophobic performance, but also has excellent super-oleophobic property.

Description

Composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film and preparation method thereof

Technical Field

The invention belongs to the technical field of polyester films, and particularly relates to a composite anti-fouling anti-ultraviolet heat-insulating polyester film and a preparation method thereof.

Background

The polyester film (PET) is a film material which is prepared by using polyethylene glycol terephthalate as a raw material, preparing a thick sheet by an extrusion method and performing biaxial tension. Polyester film is a polymer plastic film, and is more and more favored by consumers due to excellent comprehensive performance. As the production capacity and the technical level in China still cannot meet the requirements of the market, part of the production capacity and the technical level still need to depend on import.

The polyester film is usually a transparent and glossy film, has excellent mechanical properties, high rigidity, hardness and toughness, puncture resistance, friction resistance, high temperature resistance, low temperature resistance and good air tightness, is one of common barrier composite film base materials, but has poor oil stain resistance and needs to be improved in hydrophobic property.

Chinese patent with the patent application number of CN201810539403.1 discloses a preparation method of a super-hydrophobic polyester film, which comprises copolymerizing a fluorine-containing compound and a polyester raw material to obtain fluorine-containing polyester, blending the fluorine-containing polyester, super-hydrophobic nano powder and a lubricating modifier, and drawing a film to form the super-hydrophobic polyester film. According to the invention, a small amount of fluorine-containing polymer is added to obtain the fluorine-containing polyester through polymerization, and fluorine atoms are introduced to chain segments, so that the surface energy of the polyester is reduced, and the hydrophobicity of the polyester is improved; the prepared polyester film has excellent super-hydrophobic performance, super-hydrophobic SiO2 nano particles and polyester are blended and not easy to agglomerate, and the added lubricating modifier can play a role in keeping a longer super-hydrophobic effect. The prepared super-hydrophobic polyester film has the advantages of excellent performance, simple process, easy realization of industrial production and the like, can be used for water and stain prevention of film external packaging products, and can also be used in the field of stain prevention and bacteria prevention of medical film products, but the ester film prepared by the invention has poor oleophobic property and thermal insulation property.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a composite anti-fouling ultraviolet-proof heat-insulation heat-preservation polyester film and a preparation method thereof.

The invention provides the following technical scheme:

the utility model provides a thermal-insulated heat preservation polyester film of compound anti-soil anti-ultraviolet, includes modification layer, metal coating layer, thermal-insulated heat preservation and sandwich layer, thermal-insulated heat preservation includes thermal-insulated heat preservation and lower thermal-insulated heat preservation, modification layer, metal coating layer, last thermal-insulated heat preservation, sandwich layer and thermal-insulated heat preservation from the top down set gradually down.

The total thickness of the upper and lower heat-insulating layers 2 is 5-10 μm. The heat insulation layer can block ultraviolet rays of more than 99% and infrared rays of more than 85%, and has excellent heat insulation performance.

Preferably, the polyester film has an overall thickness of 20 to 50 μm. The upper and lower heat-insulating layers 2 have the same thickness and can be arranged differently.

In any of the above embodiments, the thickness of the polyester film is preferably 30 to 40 μm.

In any of the above embodiments, the thickness of the polyester film is preferably 20 μm as a whole.

In any of the above embodiments, the thickness of the polyester film is preferably 30 μm as a whole.

In any of the above embodiments, the thickness of the polyester film is preferably 40 μm.

In any of the above embodiments, the thickness of the polyester film is preferably 50 μm as a whole.

In any of the above schemes, preferably, the modification layer is formed by depositing a fluorinated solution on the metal plating layer by a chemical vapor deposition method.

In any of the above embodiments, the fluorinated liquid is preferably at least one of perfluorooctyltrimethoxysilane, fluorinated thiol, and n-fluoroalkyl phosphate.

In any of the above schemes, preferably, the metal layer is a nanoscale metal layer formed on the heat insulation layer by using copper or aluminum oxide through a vacuum evaporation technology, and the thickness of the metal layer is 1-10 μm.

In any of the above embodiments, preferably, the metal layer has a thickness of 1 to 10 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 2 to 8 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 1 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 3 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 5 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 8 μm.

In any of the above embodiments, the metal layer preferably has a thickness of 10 μm.

In any of the above embodiments, the thickness of the heat insulating layer is preferably 5 to 10 μm.

In any of the above schemes, preferably, the thickness of the heat insulation layer is 6-8 μm.

In any of the above embodiments, the thickness of the thermal insulation layer is preferably 5 μm.

In any of the above embodiments, the thickness of the thermal insulation layer is preferably 6 μm.

In any of the above embodiments, the thickness of the thermal insulation layer is preferably 8 μm.

In any of the above embodiments, the thickness of the thermal insulation layer is preferably 10 μm.

In any of the above schemes, preferably, the heat insulation layer is made of optical grade PET raw material particles, ultraviolet blocking master batches and infrared blocking master batches, and the PET raw material particles: ultraviolet blocking master batch: 96% -98% of infrared blocking master batch: 0.5% -2%:0.1 to 2 percent.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of ultraviolet blocking agent and 45-90% of optical PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of infrared blocking agent and 45-90% of optical PET raw material particles.

In any of the above schemes, preferably, the metal layer is nanoscale metal alumina, and the preparation method comprises:

(1) Dissolving aluminum acetate tetrahydrate and CTAB in 20ml of absolute ethyl alcohol to prepare 1 mol.L ^－1 Slowly titrating the ethanol solution with oxalic acid dihydrate under stirring until the pH is =5;

(2) After the precipitate is generated, continuously stirring for a period of time until thick sol is formed, and standing for a period of time to form gel;

(3) Drying the mixture in an oven for 24 hours at 100 ℃, and then calcining the white precursor in a muffle furnace to obtain nano aluminum oxide;

(4) By changing the reactionTemperature, al (CH) ₃ COO) ₃ ·4H ₂ The nanometer alumina is prepared by the O dosage, the calcining temperature and the calcining time. And (3) settling the nano aluminum oxide to the surface of the film by a chemical vapor deposition technology to obtain the metal coating.

In any of the above embodiments, preferably, the preparation method of the modification layer comprises:

(1) A certain amount of absolute ethanol was added to the beaker, and the metal plating film was placed in the beaker and cleaned with ultrasonic waves for 15 minutes. Then, washing with deionized water, and drying by a blower;

(2) Adding 20g of phosphorus pentoxide and 20g of fluoroalkyl alcohol into 500mL of deionized water, heating and stirring until the phosphorus pentoxide and the fluoroalkyl alcohol are completely dissolved, cooling and filtering, putting 100mL of solution into a small beaker, putting the dried aluminizer into the beaker, taking out and airing after a period of time to obtain the antifouling film.

In any of the above schemes, preferably, the heat insulation layer is prepared by blending optical-grade PET raw material particles, ultraviolet-blocking master batches and infrared-blocking master batches.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96% -98%:0.5% -2%:0.1 to 2 percent.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96.5% -97.5%:0.8% -1.5%:0.4 to 1.5 percent.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96%:2%:2 percent.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96.5%:1.5%:2 percent.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =97.5%:1.5%:1.5 percent.

In any of the above schemes, preferably, the heat insulation layer is made of the following raw materials by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =98%:1%:1 percent.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of ultraviolet blocking agent and 45-90% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 20-40% of ultraviolet blocking agent and 60-80% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 10% of ultraviolet blocking agent and 90% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 20% of ultraviolet blocking agent and 80% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 30% of ultraviolet blocking agent and 70% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 40% of ultraviolet blocking agent and 60% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 50% of ultraviolet blocking agent and 50% of PET raw material particles.

In any of the above schemes, preferably, the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 55% of ultraviolet blocking agent and 45% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of infrared blocking agent and 45-90% of PET particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 20-40% of infrared blocking agent and 60-80% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 10% of infrared blocking agent and 90% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 20% of infrared blocking agent and 80% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 30% of infrared blocking agent and 70% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 40% of infrared blocking agent and 60% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 50% of infrared blocking agent and 50% of PET raw material particles.

In any of the above schemes, preferably, the infrared blocking master batch is prepared from the following raw materials in parts by weight: 55% of infrared blocking agent and 45% of PET raw material particles.

In any of the above schemes, preferably, the blocking agent is one or more of antimony-doped tin dioxide, cerium oxide, silicon dioxide, titanium dioxide and benzotriazole derivatives.

In any of the above schemes, preferably, the ultraviolet blocker is one or more of 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone, and 2-hydroxy-4-n-octoxy benzophenone.

In any of the above schemes, preferably, the infrared blocking agent is one or more of indium oxide, tin oxide, vanadium oxide, and antimony oxide.

In any of the above schemes, preferably, the preparation method of the heat insulation layer comprises the following steps:

(1) Respectively adding PET (polyethylene terephthalate) large bright particles, ultraviolet blocking master batches and infrared blocking master batches into a mixer in proportion;

(2) Mixing uniformly;

(3) And (3) putting the mixed raw materials into a double-screw extruder for extrusion to obtain the composite material.

In any of the above schemes, preferably, in the step (1), the PET large bright particles, the ultraviolet blocking master batch and the infrared blocking master batch are 96% -98% by mass: 0.5% -2%:0.1 to 2 percent of the raw materials are added into a mixer.

In any of the above schemes, preferably, in the step (1), the PET large bright particles (optical-grade PET raw material particles), the ultraviolet blocking master batch, and the infrared blocking master batch are 98% by mass: 1.5%:0.5% of the mixture was added to the blender.

In any of the above schemes, preferably, in the step (1), the PET large bright particles, the ultraviolet blocking master batch, and the infrared blocking master batch are 96% by mass: 2%:2% of the mixture was added to the blender.

In any of the above schemes, preferably, in the step (1), the PET large bright particles, the ultraviolet blocking master batch, and the infrared blocking master batch are respectively 97% by mass: 1.5%:0.5% of the mixture was added to the blender.

In any of the above schemes, preferably, in the step (2), the mixture is mixed for 5-10min at a rotation speed of 500-600r/min, then the rotation speed is adjusted to 2000-25000r/min for mixing for 3-8min, and then the mixture is mixed for 5-10min at a rotation speed of 500-600 r/min.

In any of the above schemes, the compound is preferably prepared by feeding the mixed raw materials into a twin-screw extruder for extrusion in the step (3).

In any of the above schemes, the core layer is preferably a PET high transparent layer or a color layer, and the thickness is 10-20 μm.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 65-100% of optical grade PET raw material particles, 0-30% of PET return material particles and 0-3% of color master particles.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 65-100% of optical grade PET raw material particles, 0.5-30% of PET regrind particles and 0.5-3% of color master particles.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 75-90% of optical grade PET raw material particles, 5-25% of PET return material particles and 1-2% of color master batch.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 68% optical grade PET raw particles, 30% PET regrind particles, 2% color masterbatch.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 80% of optical grade PET raw material particles, 17% of PET regrind particles, 3% of color master particles.

In any of the above schemes, preferably, the core layer is made of the following raw materials by weight: 90% of optical grade PET raw material particles, 9% of PET regrind particles, 1% of color master particles.

Advantageous effects

The invention provides a composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film and a preparation method thereof.

The deposited fluoride realizes the effects of super hydrophobicity and super lipophobicity, and simultaneously, substances such as bacteria, dust and the like are not easy to adhere to the surface of the film due to the lower surface energy of the fluoride, so that the antifouling property is realized, and the antibacterial and self-cleaning effects are indirectly realized.

Drawings

FIG. 1 is a schematic structural diagram of a composite antifouling, ultraviolet-proof and heat-insulating polyester film adopting the application;

in the figure: 1. the decoration layer, 2, metal coating layer, 3, upper heat insulation layer, 4, sandwich layer, 5, lower heat insulation layer.

Detailed Description

In order to further understand the technical features of the present invention, the present invention is described in detail with reference to the specific embodiments below. The embodiments are given by way of illustration only and not by way of limitation, and any insubstantial modifications, based on the present disclosure, may be made by those skilled in the art without departing from the scope of the present disclosure.

Example 1

The following describes the embodiment with reference to fig. 1, and the composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film comprises a modification layer 1, a metal coating layer 2, a heat-insulating and heat-preserving layer and a core layer 4. The heat insulation layer can block more than 99% of ultraviolet rays and more than 85% of infrared rays, and has excellent heat insulation performance. The heat insulation layer comprises an upper heat insulation layer 3 and a lower heat insulation layer 4, and the sum of the thicknesses of the upper heat insulation layer 3 and the lower heat insulation layer 4 is 8 mu m. The decoration layer 1, the metal coating layer 2, the upper heat insulation layer 3, the core layer 4 and the lower heat insulation layer 5 are sequentially arranged from top to bottom. The thickness of the polyester film was 30 μm as a whole.

When the composite anti-fouling anti-ultraviolet heat-insulating polyester film is prepared, the core layer 4, the upper heat-insulating layer 3 and the lower heat-insulating layer 5 are prepared into an ABA structure through a three-layer co-extrusion process, then the heat-insulating layer is coated with the metal coating layer 2 through a vacuum evaporation technology, and finally the metal coating layer 2 is modified to form the modification layer 1.

Specifically, the core layer 4: for the high clarity or color layer of PET, 70% of optical grade PET raw material particles, 28% of PET regrind particles, 3% of color masterbatch particles were used, prepared as conventional in the art, at a thickness of 15 μm. The heat insulation layer is made of optical PET raw material particles and barrier master batches. The blocking master batch comprises ultraviolet blocking master batch and infrared blocking master batch, thereby realizing the dual effects of infrared blocking and ultraviolet blocking.

In this embodiment, the ultraviolet blocking master batch is prepared from 30% of ultraviolet blocking agent and 70% of optical-grade PET raw material particles by weight. In this embodiment, the infrared blocking master batch is prepared from 20% of the infrared blocking agent and 80% of the optical-grade PET raw material particles in parts by weight. In this example, the UV blocker was 2, 4-dihydroxybenzophenone. The infrared blocking agent is indium oxide.

When the heat insulation layer is prepared specifically: respectively mixing PET (polyethylene terephthalate) large bright particles (optical grade PET raw material particles), ultraviolet blocking master batches and infrared blocking master batches, wherein the mass percentage of the PET large bright particles, the ultraviolet blocking master batches and the infrared blocking master batches is 98%:1.5%: adding 0.5% of the mixture into a mixer; firstly mixing for 5-10min at the rotating speed of 500-600r/min, then regulating the rotating speed to 2000-25000r/min for mixing for 3-8min, and then mixing for 5-10min at the rotating speed of 500-600 r/min; and finally, putting the mixed raw materials into a double-screw extruder for extrusion to obtain the composite material. The temperature of each section of extrusion melting is set as follows: zone 1: 230 ℃,2 zone 277 ℃,3 zone 291 ℃,4 zone 294 ℃,5 zone 289 ℃,6 zone 285 ℃,7 zone 284 ℃,8 zone 285 ℃.

The metal coating layer 2 is nano-scale metal aluminum oxide, and the modification layer is formed by adopting n-fluoroalkyl phosphate. The preparation method of the nano aluminum oxide layer comprises the following steps:

weighing a certain amount of aluminum acetate tetrahydrate and CTAB (cetyltrimethyl ammonium bromide) and dissolving in 20ml of absolute ethyl alcohol, and controlling the temperature of a water bath to a specified temperature; then 1 mol.L is prepared ^－1 Under continuous stirring, slowly titrating the ethanol solution until ph =5; after the precipitate is generated, continuously stirring for a period of time until thick sol is formed, and standing for a period of time to form gel; drying the mixture in an oven at 100 ℃ for 24 hours, and then calcining the white precursor in a muffle furnace to obtain the nano magnesium oxide. By changing the reaction temperature, al (CH) ₃ COO) ₃ ·4H ₂ The nanometer alumina is prepared by the O dosage, the calcining temperature and the calcining time. And (3) carrying out chemical vapor deposition technology on the surface of the nano aluminum oxide sedimentation value film to obtain the metal coating.

A modification layer: a certain amount of absolute ethanol was added to the beaker, and the metal coating layer was placed in the beaker and cleaned with ultrasonic waves for 15 minutes. Then, the mixture is washed by deionized water and dried by a blower.

20g of phosphorus pentoxide and 20g of fluoroalkyl alcohol are added into 500mL of deionized water, heated and stirred until completely dissolved, cooled and filtered, and then 100mL of the solution is taken out of a small beaker. And (4) placing the dried aluminizer in a beaker, taking out the aluminizer after a period of time, and drying the aluminizer to obtain the antifouling film, namely the modification layer.

Example 2

A composite anti-fouling anti-ultraviolet heat-insulating polyester film is similar to that in the embodiment 1, except that the heat-insulating layer is prepared from the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =97%:1.2%:1.8 percent.

Example 3

The utility model provides a compound anti-soil ultraviolet protection heat preservation polyester film that insulates against heat, is similar with embodiment 1, and the difference is that the metal level is nanometer metallic copper, and the modification layer is perfluor octyl trimethoxy silane, and the separation master batch is by optics level PET raw materials particle in the heat preservation that insulates against heat: ultraviolet blocking master batch: infrared blocking master batch =97%:1.5%:1.5 percent of the total weight.

Comparative example 1 a composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film, similar to example 1, except that the heat-insulating and heat-preserving layer is made of the following components: 94% of PET raw material particles, 3% of ultraviolet blocking master batch and 3% of infrared blocking master batch.

Comparative example 2 a composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film, similar to example 1, except that the heat-insulating and heat-preserving layer is made of the following components: 99.75% of PET raw material particles, 0.2% of ultraviolet blocking master batch and 0.05% of infrared blocking master batch.

Comparative example 3 a composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film, similar to example 1, except that the heat-insulating and heat-preserving layer is made of the following components: 98.79 percent of PET raw material particles, 1.2 percent of ultraviolet barrier master batch and 0.01 percent of infrared barrier master batch.

Test data:

(1) Contact angle with water test;

(2) Contact angle with hexadecane oil;

(3) Testing the ultraviolet blocking rate;

(4) Testing the infrared blocking rate;

(5) And (5) testing light transmittance.

The test results are shown in table 1.

TABLE 1

Through many times of tests, in the range of this application, infrared separation master batch content is many, and is effectual to infrared separation, and the ultraviolet separation master batch quantity is big equally, and is effectual to ultraviolet separation. When the using amount of the infrared blocking master batch and the ultraviolet blocking master batch exceeds the content range of the application, the compatibility of the infrared blocking master batch and the ultraviolet blocking master batch with PET is poor, the quality of the prepared film is poor, the film is mainly expressed in the aspects of antifouling, hydrophobic, oleophobic and the like, the integrity of the film shows that the film is not formed, and the film has the defects of rough and uneven surface and the like.

Example 4

A composite antifouling ultraviolet-proof heat-insulating polyester film is similar to that in example 1, except that the overall thickness of the polyester film is 20 μm.

Example 5

A composite type anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film is similar to that in example 1, except that the overall thickness of the polyester film is 40 μm.

Example 6

A composite antifouling ultraviolet-proof heat-insulating polyester film is similar to that in example 1, except that the overall thickness of the polyester film is 50 μm.

Example 7

A composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film is similar to that in example 1, except that a metal layer is a nano-scale metal layer formed on a heat-insulating and heat-preserving layer by adopting alumina through a vacuum evaporation technology, and the thickness of the metal layer is 2 microns.

Example 8

A composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film is similar to that in example 1, except that the thickness of the metal layer is 4 μm.

Example 9

A composite antifouling, ultraviolet-proof and heat-insulating polyester film is similar to that in example 1, except that the thickness of the metal layer is 8 μm.

Example 10

A composite antifouling, ultraviolet-proof and heat-insulating polyester film is similar to that in example 1, except that the thickness of the metal layer is 10 μm.

Example 11

A composite antifouling ultraviolet-proof heat-insulating polyester film is similar to that in example 1, except that the thickness of the heat-insulating layer is 5 μm.

Example 12

A composite antifouling ultraviolet-proof heat-insulating polyester film is similar to that in example 1, except that the thickness of the heat-insulating layer is 7 μm.

Example 13

A composite antifouling ultraviolet-proof heat-insulating polyester film is similar to that in example 1, except that the thickness of the heat-insulating polyester film is 10 μm.

Example 14

A composite anti-fouling, anti-uv, heat-insulating and heat-preserving polyester film, similar to example 1, except that the barrier masterbatch (barrier agent) is made of optical PET chip particles, a uv barrier agent and an infrared barrier agent, the uv barrier agent is one or more of 2- (2 '-hydroxy-5' -methylphenyl) benzotriazole, 2, 4-dihydroxybenzophenone and 2-hydroxy-4-n-octoxy benzophenone, and the infrared barrier agent is one or more of indium oxide, tin oxide, vanadium oxide and antimony oxide.

Example 15

A composite anti-fouling, anti-ultraviolet, heat-insulating and heat-preserving polyester film is similar to that in example 1, except that a core layer is a PET high-transparency layer or a PET high-transparency layer, and the thickness of the core layer is 10-20 mu m.

Example 16

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in the embodiment 1, except that a core layer is prepared from the following raw materials in parts by weight: 67% of optical grade PET chip particles, 30% of PET regrind particles, 3% of color master particles.

Example 17

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in the embodiment 1, except that a core layer is prepared from the following raw materials in parts by weight: 80% of optical grade PET chip particles, 18% of PET regrind particles, 2% of color masterbatch.

Example 18

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in the embodiment 1, except that a core layer is prepared from the following raw materials in parts by weight: 98% of optical grade PET chip particles, 1% of PET regrind particles, 1% of color master particles.

Example 19

A composite antifouling ultraviolet-proof heat-insulation polyester film is similar to that in example 1, except that the heat-insulation layer is prepared from the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96%:2%:2 percent.

Example 20

A composite antifouling ultraviolet-proof heat-insulation polyester film is similar to that in example 1, except that the heat-insulation layer is prepared from the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =96.5%:1.5%:2 percent.

Example 21

A composite antifouling ultraviolet-proof heat-insulation polyester film is similar to that in example 1, except that the heat-insulation layer is prepared from the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =97.5%:1.5%:1.5 percent.

Example 22

A composite antifouling ultraviolet-proof heat-insulation polyester film is similar to that in example 1, except that the heat-insulation layer is prepared from the following raw materials in parts by weight: optical grade PET raw material particles: ultraviolet blocking master batch: infrared blocking master batch =98%:1%:1 percent.

Example 23

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that ultraviolet blocking master batches are prepared from the following raw materials in parts by weight: 10% of ultraviolet blocking agent and 90% of PET raw material particles.

Example 24

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that ultraviolet blocking master batches are prepared from the following raw materials in parts by weight: 20% of ultraviolet blocking agent and 80% of PET raw material particles.

Example 25

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that ultraviolet blocking master batches are prepared from the following raw materials in parts by weight: 30% of ultraviolet blocking agent and 70% of PET raw material particles.

Example 26

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that ultraviolet blocking master batches are prepared from the following raw materials in parts by weight: 40% of ultraviolet blocking agent and 60% of PET raw material particles.

Example 27

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that ultraviolet-proof master batches are prepared from the following raw materials in parts by weight: 50% of ultraviolet blocking agent and 50% of PET raw material particles.

Example 28

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that ultraviolet blocking master batches are prepared from the following raw materials in parts by weight: 55% of ultraviolet blocking agent and 45% of PET raw material particles.

Example 29

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 10% of infrared blocking agent and 90% of PET raw material particles.

Example 30

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 20% of infrared blocking agent and 80% of PET raw material particles.

Example 31

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 30% of infrared blocking agent and 70% of PET raw material particles.

Example 32

A composite anti-fouling anti-ultraviolet heat-insulating heat-preserving polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 40% of infrared blocking agent and 60% of PET raw material particles.

Example 33

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 50% of infrared blocking agent and 50% of PET raw material particles.

Example 34

A composite antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is similar to that in example 1, except that the infrared blocking master batch is prepared from the following raw materials in parts by weight: 55% of infrared blocking agent and 45% of PET raw material particles.

The invention provides a composite anti-fouling ultraviolet-proof heat-insulation heat-preservation polyester film and a preparation method thereof, the invention compounds anti-fouling performance through optimization and improvement of the preparation method on the basis that the film has heat insulation and heat preservation, the film not only has stronger super-hydrophobic performance, but also has excellent super-oleophobic performance, and overcomes the defect of poor stability of the hydrophobic and oleophobic surfaces.

Claims

1. A compound antifouling ultraviolet-proof heat-insulation heat-preservation polyester film is characterized in that: the decorative heat-insulating layer comprises a decorative layer, a metal coating layer, a heat-insulating layer and a core layer, wherein the heat-insulating layer comprises an upper heat-insulating layer and a lower heat-insulating layer; the decorative layer, the metal coating layer, the upper heat-insulating layer, the core layer and the lower heat-insulating layer are sequentially arranged from top to bottom;

the core layer is a PET high transparent layer or a color layer, and the thickness of the core layer is 10-20 mu m;

the heat insulation layer is made of optical-grade PET raw material particles, ultraviolet blocking master batches and infrared blocking master batches, wherein the optical-grade PET raw material particles are as follows: ultraviolet blocking master batch: the infrared blocking master batch is (96% -98%): (0.5% -2%): (0.1% -2%);

depositing the nano-alumina on the surface of the film by a chemical vapor deposition technology to obtain a metal coating layer;

the modification layer is formed by depositing the fluoroalkyl phosphate on the metal coating layer by a chemical vapor deposition method;

the preparation method of the nano aluminum oxide comprises the following steps:

(1) Dissolving aluminum acetate tetrahydrate and CTAB in 20ml of absolute ethyl alcohol to prepare 1 mol.L ^-1 Slowly titrating the ethanol solution with oxalic acid dihydrate under stirring until the pH is =5;

(2) After the precipitation is generated, continuously stirring for a period of time until thick sol is formed, and standing for a period of time to form gel;

(3) Drying the mixture in an oven at 100 ℃ for 24h, and then calcining the white precursor in a muffle furnace to obtain the nano-alumina.

2. The composite antifouling ultraviolet-proof heat-insulating polyester film as claimed in claim 1, wherein: the ultraviolet blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of ultraviolet blocking agent and 45-90% of optical PET raw material particles.

3. The composite antifouling ultraviolet-proof heat-insulating polyester film as claimed in claim 2, wherein: the infrared blocking master batch is prepared from the following raw materials in parts by weight: 10-55% of infrared blocking agent and 45-90% of optical-grade PET raw material particles.

4. The composite antifouling ultraviolet-proof heat-insulating polyester film as claimed in claim 1, wherein: the core layer is prepared from the following raw materials in parts by weight: 65-100% of optical grade PET raw material particles, 0-30% of PET return particles and 0-3% of color master particles.

5. The composite antifouling ultraviolet-proof heat-insulating polyester film as claimed in claim 1, wherein: the preparation method of the heat insulation layer comprises the following steps:

(1) Respectively adding PET large bright particles, ultraviolet blocking master batches and infrared blocking master batches into a mixer in proportion;

(2) Mixing uniformly;

(3) And (3) putting the mixed raw materials into a double-screw extruder for extrusion to prepare the heat insulation layer.