CN112812519A - High infrared light and ultraviolet light blocking master batch for PET film and preparation method and application thereof - Google Patents
High infrared light and ultraviolet light blocking master batch for PET film and preparation method and application thereof Download PDFInfo
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- 229920002799 BoPET Polymers 0.000 title claims abstract description 69
- 230000000903 blocking effect Effects 0.000 title claims abstract description 54
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 40
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 28
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 239000004611 light stabiliser Substances 0.000 claims abstract description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 11
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000227 grinding Methods 0.000 claims description 8
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical group OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 5
- 229940124543 ultraviolet light absorber Drugs 0.000 claims description 5
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical group CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 4
- 230000002745 absorbent Effects 0.000 abstract description 3
- 239000002250 absorbent Substances 0.000 abstract description 3
- 238000004383 yellowing Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 239000008187 granular material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011858 nanopowder Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/205—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
- C08J3/2053—Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase the additives only being premixed with a liquid phase
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2231—Oxides; Hydroxides of metals of tin
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/0091—Complexes with metal-heteroatom-bonds
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/132—Phenols containing keto groups, e.g. benzophenones
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
Abstract
The invention belongs to the technical field of PET films, and provides a high infrared light and ultraviolet light blocking master batch for a PET film, and a preparation method and application thereof; the high infrared light and ultraviolet light blocking master batch for the PET film is prepared by taking 45-78 parts of PET resin as a carrier, adding 5-20 parts of ultraviolet light absorbent and 5-15 parts of light stabilizer, matching 10-20 parts of self-made nano tin oxide dispersion liquid and 0.05-0.1 part of phthalocyanine blue powder, and adding 0.2-0.5 part of dispersing agent; the high infrared light and ultraviolet light blocking master batch for the PET film can overcome the defects of poor ultraviolet light and infrared light blocking effect, yellowing of the surface of the film and poor film quality of the existing PET film, and also has higher light transmittance and glossiness and lower haze; the high infrared light and ultraviolet light blocking master batch for the PET film is applied to preparing the PET film, and the obtained PET film is used as an automobile window film, so that the high-quality automobile window film can be obtained.
Description
Technical Field
The invention relates to the technical field of PET films, in particular to a high infrared light and ultraviolet light blocking master batch for a PET film, and a preparation method and application thereof.
Background
The PET film, also known as a high-temperature resistant polyester film, is widely applied to industries such as optics, packaging, electronics and the like, in particular to the application on automobile window films due to good mechanical and transparent properties. In recent years, with the gradual enhancement of concepts such as health, energy conservation and low carbon of people; it is becoming increasingly recognized that prolonged exposure to ultraviolet light can cause damage to the skin and eyes, and that infrared light can cause increased thermal effects due to thermal radiation effects; therefore, people have higher and higher requirements on infrared and ultraviolet barrier of the car window film.
However, a general window film, such as a PET film, has a poor blocking effect against ultraviolet and infrared light although its light transmittance is high. Based on the method, the ultraviolet light absorbent (such as 2-hydroxy-4-n-octoxy benzophenone) and the nano tin oxide with the infrared light barrier effect are added into the PET film so as to improve the ultraviolet light and infrared light barrier effect of the PET film. However, the ultraviolet light blocking of the obtained PET film can only reach about 98 percent, and the 100 percent ultraviolet light blocking effect cannot be achieved; moreover, we find that the surface of the PET film added with the ultraviolet absorber and the nano tin oxide is easy to yellow, so that the ultraviolet and infrared light blocking effect and the product quality of the PET film are affected, and a high-quality vehicle window film cannot be obtained.
Disclosure of Invention
One of the objectives of the present invention is to provide a high infrared and ultraviolet light blocking master batch for a PET film, so as to overcome the defects of poor ultraviolet and infrared light blocking effect, yellowing of the film surface, and poor film quality of the existing PET film, and the high infrared and ultraviolet light blocking master batch for the PET film also has high light transmittance and glossiness, and low haze.
The invention also aims to overcome the defects of the prior art and provide a preparation method of the high infrared light and ultraviolet light blocking master batch for the PET film, which has a stable preparation process and is suitable for large-scale production, so as to solve the problems that nano tin oxide nano powder is difficult to disperse in the high polymer material system and nano powder liquid is difficult to apply in a double-screw granulation process.
The third purpose of the invention is to solve the defects of the prior art, and the high infrared light and ultraviolet light blocking master batch for the PET film is applied to the preparation of the PET film, so that the obtained PET film can be used as an automobile window film, and further, the high-quality automobile window film can be obtained.
Based on the above, the invention discloses a high infrared light and ultraviolet light blocking master batch for a PET film, which is prepared from the following raw materials in parts by weight:
45-78 parts of PET resin
5-20 parts of ultraviolet absorber
5-15 parts of light stabilizer
10-20 parts of self-made nano tin oxide dispersion liquid
0.2 to 0.5 portion of dispersant
0.05 to 0.1 portion of phthalocyanine blue powder.
Preferably, the PET resin is a film-grade or bottle-grade special PET resin with the viscosity of 0.6-0.85.
Preferably, the ultraviolet light absorber is 2-hydroxy-4-n-octoxybenzophenone.
Preferably, the light stabilizer is a hindered amine light stabilizer.
Preferably, the home-made nano tin oxide dispersion liquid is a dispersion liquid formed by 30% of nano tin oxide and 70% of ethylene glycol by weight.
Preferably, the dispersant is pentaerythritol stearate.
The invention also discloses a preparation method of the high infrared light and ultraviolet light blocking master batch for the PET film, which comprises the following preparation steps:
step S1, adding 30 wt% of nano tin oxide and 70 wt% of ethylene glycol into a grinder, grinding to obtain a self-made nano tin oxide dispersion liquid, and pouring the self-made nano tin oxide dispersion liquid into an extruder liquid weightlessness scale;
step S2, adding the PET resin, the ultraviolet absorber, the light stabilizer, the phthalocyanine blue powder and the dispersant into a stirring barrel, and uniformly stirring at a low speed to obtain a mixed material;
and step S3, putting the mixed material into a discharging barrel of an extruder, starting feeding the mixed material, sequentially starting a liquid pump and a liquid weightlessness scale, adding the self-made nano tin oxide dispersion liquid from a side feeding port of a double screw through the liquid pump and the liquid weightlessness scale, extruding, granulating, homogenizing and packaging to obtain the high infrared light and ultraviolet light barrier master batch for the PET film.
In the preparation method, 70 weight percent of glycol is used as a carrier, 30 weight percent of nano tin oxide is added, and the self-made nano tin oxide dispersion liquid is prepared by high-speed grinding, so that the technical problem that nano tin oxide nano powder is difficult to disperse in the high polymer material system is solved, the dispersion effect is improved, and the infrared light blocking effect is further ensured; moreover, for the self-made nano tin oxide dispersion liquid with high concentration, a special liquid pump and a liquid weightlessness scale are adopted to add the double screws through a side feeding port, so that the application problem of the nano powder liquid in the double screw granulation process is solved.
Preferably, in step S1, the grinding speed is 300 rpm, and the grinding time is 6 hours.
Preferably, in step S2, the low-speed stirring speed is 300 rpm, and the stirring time is 10 minutes.
Preferably, in step S3, the extrusion granulation process parameters are as follows: the temperatures in the extruder zones were: the temperature of the first zone is 150 +/-10 ℃, the temperature of the second zone is 230 +/-10 ℃, the temperature of the third zone is 250 +/-10 ℃, the temperature of the fourth zone is 260 +/-10 ℃, the temperature of the fifth zone to the sixth zone is 270 +/-10 ℃, the temperature of the seventh zone is 245 +/-10 ℃, the temperature of the eighth zone is 250 +/-10 ℃, the temperature of the ninth zone is 260 +/-10 ℃, the temperature of the tenth zone is 250 +/-10 ℃, the temperature of the eleventh zone is 255 +/-10 ℃ and the temperature of the head is 270 +/-10 ℃; the rotating speed of the screw is 350 +/-15 revolutions per minute, the feeding rotating speed is 70-90 revolutions per minute, the rotating speed of the granulator is 25-40 revolutions per minute, the vacuum degree is less than or equal to 1Mpa, the length of the material strip before entering water is 15-20mm, the length of the material strip before entering water is 3-6m, and the temperature of the water front tank is 40 +/-10 ℃.
The invention also discloses an application of the high infrared light and ultraviolet light blocking master batch for the PET film, namely the high infrared light and ultraviolet light blocking master batch for the PET film is applied to the preparation of the PET film.
Preferably, the PET film is prepared by adding 8 wt% of high infrared light and ultraviolet light blocking master batch to the surface layer of the PET film.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the inventor researches and tests that a proper amount of ultraviolet light absorbent matched with a light stabilizer has better absorption and blocking effects on ultraviolet light, particularly ultraviolet light in a 340nm wave band of 240-; in addition, the inventor researches and discovers that the addition of the ultraviolet light absorber and the nano tin oxide can generate yellow light on the surface of the PET film, and influences the ultraviolet light and infrared light blocking effect and the product quality, so a small amount of phthalocyanine blue is required to be added to eliminate the yellow light on the surface of the PET film, and the product quality is further improved.
Based on the method, 45 to 78 parts of PET resin is taken as a carrier, 5 to 20 parts of ultraviolet absorber and 5 to 15 parts of light stabilizer are added, 10 to 20 parts of self-made nano tin oxide dispersion liquid and 0.05 to 0.1 part of phthalocyanine blue powder are matched, 0.2 to 0.5 part of dispersant is added, preparing high infrared light and ultraviolet light blocking master batch for the PET film, adding 8 weight percent of the high infrared light and ultraviolet light blocking master batch for the PET film on the surface layer to prepare the PET film with the thickness of 23um, the PET film is tested, and the result shows that the light transmittance of the PET film is 83.3%, the haze is 2.8%, the glossiness is 127 °, the ultraviolet light blocking rate is up to 100%, and the infrared light blocking rate is up to 38.7%, which are greatly higher than the quality data requirements of high-class products in the national industry (automobile window sunshade film) standard GA T744-2013 and conventional sunshade films in the market, so that the high-quality automobile window film can be obtained.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.
Examples 1 to 4
The raw material formula of the high infrared and ultraviolet light blocking master batch for the PET film of the embodiments 1 to 4 is shown in the following table 1:
TABLE 1
| Raw materials | Example 1 | Example 2 | Example 3 | Example 4 |
| PET resin | 45 portions of | 55 portions of | 68 portions of | 78 portions of |
| Ultraviolet light absorber | 5 portions of | 9 portions of | 15 portions of | 20 portions of |
| Light stabilizers | 5 portions of | 7 portions of | 11 portions of | 15 portions of |
| Self-made nano tin oxide dispersion liquid | 10 portions of | 12 portions of | 17 portions of | 20 portions of |
| Dispersing agent | 0.2 part | 0.3 part | 0.3 part | 0.5 portion |
| Phthalocyanine blue powder | 0.05 part | 0.08 portion of | 0.1 part | 0.1 part |
Wherein the PET resin is special PET resin with viscosity of 0.6-0.85, such as Huarun CR 8863.
Wherein the ultraviolet light absorber is 2-hydroxy-4-n-octoxy benzophenone.
Wherein the light stabilizer is a hindered amine light stabilizer.
Wherein the self-made nano tin oxide dispersion liquid is a dispersion liquid formed by 30 weight percent of nano tin oxide and 70 weight percent of glycol.
Wherein the dispersant is pentaerythritol stearate.
The preparation method of the high infrared light and ultraviolet light blocking master batch for the PET film of the embodiments 1 to 4 includes the following preparation steps:
step one, mixing materials: adding 30 weight percent of nano tin oxide and 70 weight percent of glycol into a grinder, grinding to obtain a self-made nano tin oxide dispersion liquid, and pouring the self-made nano tin oxide dispersion liquid into an extruder liquid weight loss scale; and adding the PET resin, the ultraviolet absorber, the light stabilizer, the phthalocyanine blue powder and the dispersing agent into a stirring barrel, and uniformly stirring at a low speed to obtain a mixed material.
Step two, granulating, homogenizing and packaging: putting the mixed material obtained in the step one into a discharging barrel of an extruder, starting to feed the mixed material, sequentially starting a liquid pump and a liquid weightlessness scale, adding the self-made nano tin oxide dispersion liquid obtained in the step one from a side feeding port of a double screw through the liquid pump and the liquid weightlessness scale, and extruding and granulating; after obtaining the granules, opening a homogenizing stirring barrel for homogenizing for 10min before sampling or packaging; and (7) packaging.
Wherein the extrusion granulation process parameters are as follows: the temperatures in the extruder zones were: the temperature of the first zone is 150 +/-10 ℃, the temperature of the second zone is 230 +/-10 ℃, the temperature of the third zone is 250 +/-10 ℃, the temperature of the fourth zone is 260 +/-10 ℃, the temperature of the fifth zone to the sixth zone is 270 +/-10 ℃, the temperature of the seventh zone is 245 +/-10 ℃, the temperature of the eighth zone is 250 +/-10 ℃, the temperature of the ninth zone is 260 +/-10 ℃, the temperature of the tenth zone is 250 +/-10 ℃, the temperature of the eleventh zone is 255 +/-10 ℃ and the temperature of the head is 270 +/-10 ℃; the rotating speed of the screw is 350 +/-15 revolutions per minute, the feeding rotating speed is 70-90 revolutions per minute, the rotating speed of the granulator is 25-40 revolutions per minute, the vacuum degree is less than or equal to 1Mpa, the length of the material strip before entering water is 15-20mm, the length of the material strip before entering water is 3-6m, and the temperature of the water front tank is 40 +/-10 ℃.
Wherein, the granulation process requirements of the granules are as follows: the cut of the granular material is flat, the length is 2-3mm, and the granular material has no sticking knife, diamond-shaped granular material, impurity grains and color change.
The application of the high infrared and ultraviolet light blocking master batch for the PET film of the embodiment 1 to 4 is that the high infrared and ultraviolet light blocking master batch for the PET film of the embodiment 1 to 4 is added to the surface layer of the PET film in a weight percentage of 8% to prepare the PET film, so that the obtained PET film is used as the vehicle window film, and the vehicle window film with high quality can be obtained.
Comparative examples 1 to 3
The raw material formulation of the infrared and ultraviolet light blocking master batch of comparative examples 1 to 3, the preparation method and the application thereof are substantially the same as those of example 3, and the differences are shown in the following table 2:
TABLE 2
Performance testing
The infrared light and ultraviolet light blocking master batches of examples 1 to 4 and comparative examples 1 to 3 were added to the surface layer at a weight percentage of 8% to prepare PET films with a thickness of 23um, and the performance of the PET films was tested according to the standards GB T2410-2008 and GA T744-2013, and the test results are shown in the following tables 3 to 4.
TABLE 3
| Detecting items | Standard value | Example 1 | Example 2 | Example 3 | Example 4 |
| Light transmittance | ≥83％ | Conform to | Conform to | Conform to | Conform to |
| Haze degree | ≤3％ | Conform to | Conform to | Conform to | Conform to |
| Degree of gloss | ≥120 | Conform to | Conform to | Conform to | Conform to |
| Ultraviolet light blocking ratio | 100％ | Conform to | Conform to | Conform to | Conform to |
| Infrared light blocking ratio | ≥20％ | Conform to | Conform to | Conform to | Conform to |
TABLE 4
| Detecting items | Comparative example1 | Comparative example 2 | Comparative example 3 | Example 3 |
| Light transmittance | 83.2％ | 83.5％ | 80.5％ | 83.3％ |
| Haze degree | 3％ | 2.8％ | 3.1％ | 2.8％ |
| Degree of gloss | 124 | 127 | 118 | 127 |
| Ultraviolet light blocking ratio | 100％ | 98.5％ | 100％ | 100％ |
| Infrared light blocking ratio | 31.6％ | 37.2％ | 38.8％ | 38.7％ |
| Yellow value B of color | 1.03 | 2.89 | 0.91 | 1.03 |
As can be seen from tables 3-4, compared with comparative examples 1-3, the PET film prepared from the high infrared light and ultraviolet light blocking master batch for the PET film has good light transmittance, haze and glossiness, the infrared light blocking rate is improved, the ultraviolet light blocking rate can reach 100%, and the yellowing problem of the surface of the PET film can be greatly improved; moreover, the comprehensive performance of the automobile window sunshade film is greatly higher than the quality data requirements of superior products in the national industry (automobile window sunshade film) standard GA T744-2013 and conventional sunshade films in the market, and the automobile window sunshade film can be applied to the automobile window sunshade film, so that the quality of the automobile window sunshade film can be greatly improved.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
The technical solutions provided by the present invention are described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the descriptions of the above examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The high infrared light and ultraviolet light blocking master batch for the PET film is characterized by comprising the following raw materials in parts by weight:
2. the high infrared and ultraviolet light blocking master batch for the PET film according to claim 1, wherein the PET resin is a film-grade or bottle-grade special PET resin with a viscosity of 0.6-0.85.
3. The high infrared light and ultraviolet light blocking master batch for the PET film according to claim 2, wherein the ultraviolet light absorber is 2-hydroxy-4-n-octoxybenzophenone.
4. The high infrared and ultraviolet light blocking master batch for the PET film according to claim 1, wherein the light stabilizer is a hindered amine light stabilizer.
5. The high infrared and ultraviolet light blocking master batch for the PET film according to claim 1, wherein the self-made nano tin oxide dispersion liquid is a dispersion liquid formed by 30% by weight of nano tin oxide and 70% by weight of ethylene glycol.
6. The high infrared and ultraviolet blocking master batch for the PET film according to claim 1, wherein the dispersing agent is pentaerythritol stearate.
7. The preparation method of the high infrared and ultraviolet light blocking master batch for the PET film according to any one of claims 1 to 6, which is characterized by comprising the following preparation steps:
step S1, adding 30 wt% of nano tin oxide and 70 wt% of ethylene glycol into a grinder, grinding to obtain a self-made nano tin oxide dispersion liquid, and pouring the self-made nano tin oxide dispersion liquid into an extruder liquid weightlessness scale;
step S2, adding the PET resin, the ultraviolet absorber, the light stabilizer, the phthalocyanine blue powder and the dispersant into a stirring barrel, and uniformly stirring at a low speed to obtain a mixed material;
and step S3, putting the mixed material into a discharging barrel of an extruder, starting feeding the mixed material, sequentially starting a liquid pump and a liquid weightlessness scale, adding the self-made nano tin oxide dispersion liquid from a feeding port at the side of a double screw rod through the liquid pump and the liquid weightlessness scale, extruding, granulating, homogenizing and packaging to obtain the high infrared light and ultraviolet light barrier master batch for the PET film.
8. The method for preparing the high infrared and ultraviolet blocking masterbatch for the PET film according to claim 7, wherein in the step S1, the grinding speed is 300 rpm, and the grinding time is 6 hours;
in the step S2, the low-speed stirring speed is 300 rpm, and the stirring time is 10 minutes;
in the step S3, the extrusion granulation process parameters are as follows: the temperatures in the extruder zones were: the temperature of the first zone is 150 +/-10 ℃, the temperature of the second zone is 230 +/-10 ℃, the temperature of the third zone is 250 +/-10 ℃, the temperature of the fourth zone is 260 +/-10 ℃, the temperature of the fifth zone to the sixth zone is 270 +/-10 ℃, the temperature of the seventh zone is 245 +/-10 ℃, the temperature of the eighth zone is 250 +/-10 ℃, the temperature of the ninth zone is 260 +/-10 ℃, the temperature of the tenth zone is 250 +/-10 ℃, the temperature of the eleventh zone is 255 +/-10 ℃ and the temperature of the head is 270 +/-10 ℃; the rotating speed of the screw is 350 +/-15 revolutions per minute, the feeding rotating speed is 70-90 revolutions per minute, the rotating speed of the granulator is 25-40 revolutions per minute, the vacuum degree is less than or equal to 1Mpa, the length of the material strip before entering water is 15-20mm, the length of the material strip before entering water is 3-6m, and the temperature of the water front tank is 40 +/-10 ℃.
9. The use of the high infrared and ultraviolet light blocking master batch for the PET film according to any one of claims 1 to 6, wherein the high infrared and ultraviolet light blocking master batch for the PET film is used for preparing the PET film.
10. The use of the high infrared and ultraviolet light blocking master batch for the PET film according to claim 9, wherein the high infrared and ultraviolet light blocking master batch for the PET film is added to the surface layer of the PET film in a weight percentage of 8% to prepare the PET film.
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