CN113861473A - Thermochromic polyester release film and preparation method thereof - Google Patents
Thermochromic polyester release film and preparation method thereof Download PDFInfo
- Publication number
- CN113861473A CN113861473A CN202110822713.6A CN202110822713A CN113861473A CN 113861473 A CN113861473 A CN 113861473A CN 202110822713 A CN202110822713 A CN 202110822713A CN 113861473 A CN113861473 A CN 113861473A
- Authority
- CN
- China
- Prior art keywords
- polyester
- thermochromic
- release
- resin
- base film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
-
- 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
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to a thermochromic polyester release film which comprises a polyester base film and a release coating coated on the surface of one side of the polyester base film, wherein the polyester base film is composed of anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin, and the weight percentages of the components are as follows: 80-90% of anti-aging polyester resin, 5-10% of antistatic polyester resin and 5-10% of thermochromic polyester resin; the polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 50-200 microns; the release coating is formed by coating release coating liquid and baking and curing, and the thickness of the release coating is 2-8 microns. The thermochromic polyester release film provided by the invention is prepared by release coating liquid and base film preparation, single-layer extrusion, coating curing and other processes, has good heat resistance, antistatic property, aging resistance and migration resistance, and can develop color and change color at normal temperature and high temperature.
Description
Technical Field
The invention relates to a functional polyester release film, in particular to a thermochromic polyester release film and a preparation method thereof, belonging to the technical field of high-molecular thermochromic materials.
Background
The release film, also called as a release film, a barrier film, a release film, a separation film, a glue-blocking film, a silicon oil film, a non-adhesive film, a slip film, a Tianna paper, a silicon oil paper, a release paper and the like, refers to a film having separability after contacting with a specific material under a limited condition. The polyester release film prepared from the PET resin has the advantages of high transparency, good glossiness, stable release force and the like, so that the polyester release film is widely applied to the fields of electronics, communication, machinery, decoration and the like.
In recent years, with the progress of science and technology, functional polyester release films are developed and applied. The thermochromic polyester release film is a functional polyester material which can generate reversible color change along with different temperatures, can develop color and change color at high temperature and normal temperature, and basically keeps the original color at normal temperature. The thermochromic polyester release film is mainly used for military anti-counterfeiting covers, decorative articles, mechanical equipment, highway signs, building marks, color-changing toys, buildings and automobile window films, and can present colors with different depths at different temperatures, so that the thermochromic polyester release film has the effects of safety warning, military camouflage, environment beautification, entertainment interest and the like. At present, research work on the thermochromic polyester release film in China has made some progress, and the thermochromic polyester release film has attracted wide attention of related enterprises.
The invention discloses a thermochromic release film patent technology in a Chinese patent database, and the patent application number is as follows: CN 201610301045.1; application date: 2016, 5 months and 9 days; publication No.: CN105907303A, published: 2016, 8 months, 31 days; the thermochromic release film is prepared by coating a release agent containing a thermochromic compound on the surface layer of a PE (polyethylene) base film; when the thermochromic release film is placed in an environment with overhigh temperature, a warning effect can be generated through color change, so that the adhesive is prevented from being aged at high speed in an external environment such as high temperature, and the service life of a product is prolonged. The defects are as follows: the thermochromic compound adopted by the thermochromic release film is one of triarylmethane compounds, spiropyran compounds or Schiff base compounds, and the compound can change color only under the condition of high temperature, and the color is irreversible, so that the application of the product is not facilitated.
Disclosure of Invention
The invention aims to provide a thermochromic polyester release film and a preparation method thereof, which effectively solve the problems in the background art and meet the market use requirements.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a thermochromic polyester release film comprises a polyester base film and a release coating coated on one side surface of the polyester base film, wherein the polyester base film is composed of an anti-aging polyester resin, an antistatic polyester resin and a thermochromic polyester resin, and the weight percentages of the components are as follows: 80-90% of anti-aging polyester resin, 5-10% of antistatic polyester resin and 5-10% of thermochromic polyester resin.
The polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 40-100 microns.
The release coating is formed by coating release coating liquid and baking and curing, and the thickness of the release coating is 2-10 microns.
The release coating liquid is prepared from a main agent, an auxiliary agent and a solvent, wherein the main agent is polyacrylate resin, octadecyl trimethoxy silane and fluorine-containing polymer, and the weight percentage of the main agent is about 20-30% of that of the release coating liquid; the auxiliary agent is phosphorous acid-diisooctyl benzene, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromic agent, heat stabilizer and release force regulator, and the weight percentage of the auxiliary agent is about 10-20% of the release coating liquid; the solvent is at least one or more of isopropyl ether, heptane and butanone, and accounts for 40-70 wt% of the ionotropic liquid.
Preferably, the polyester resin in the invention is any one or a mixture of several of polyethylene terephthalate resin, polyethylene naphthalate resin, 1.3-propylene terephthalate resin, polybutylene terephthalate resin, polyarylate resin or copolyester resin.
Preferably, the thermochromic polyester is polyethylene terephthalate resin containing an organic reversible thermochromic agent, wherein the organic reversible thermochromic agent is any one or a mixture of more of spirolactone, bromocresol purple, anthraquinone or quinacridone.
Preferably, the fluorine-containing polymer in the invention is one or a mixture of more of perfluoroalkoxy resin, ethylene-tetrafluoroethylene copolymer, polychlorotrifluoroethylene, polyhexafluoropropylene, polytetrafluoroethylene, polyvinylidene fluoride and ethylene-chlorotrifluoroethylene copolymer.
Preferably, the heat stabilizer in the invention is one or a mixture of more of stearate, calcium zinc and organic tin.
Preferably, the release force regulator is one or a mixture of more of fluorine-containing silicon acrylate copolymer or polymerization products of octamethylcyclotetrasiloxane and methylsiloxane.
The preparation method of the thermochromic polyester release film comprises the following steps:
step 1) preparation of thermochromic release coating liquid: adding octadecyltrimethoxysilane, fluorine-containing polymer and solvent into a container, and uniformly stirring for 5-10 minutes by a pneumatic stirrer to form a mixed solution, wherein the stirring speed is 600-; then adding the diisooctyl benzene phosphite into a container, uniformly stirring for 5-10 minutes, increasing the stirring speed to 900-1200r/min, and respectively adding the diisooctyl benzene phosphite, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromic agent, heat stabilizer and release force regulator after a certain time for uniformly stirring; and then adding the polyacrylate resin into a container, stirring for 6-10 minutes to obtain a mixture, and finally filtering the mixture through a filter screen to obtain a release coating liquid product.
Step 2) preparation of the thermochromic polyester base film mixture: the preparation method comprises the steps of preparing anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin according to the weight percentage of each component, and sending the components into a drying kettle to be dried, wherein the drying time is usually 3-5 hours, so that the base film mixture is obtained.
Step 3) preparation of the thermochromic polyester release film: adding the prepared thermochromic polyester base film mixture into a screw extruder, and preparing a single-layer thermochromic polyester base film through melt extrusion and bidirectional stretching; then, uniformly coating the release coating liquid on the surface of one side of the base film by an online coating method, wherein the wet coating amount is 10-20 g/square meter; finally, the finished product is prepared by baking and curing treatment with the baking temperature of 90-120 ℃ and the baking time of 20-40 seconds, rolling and packaging.
Has the advantages that:
compared with the prior art, the invention has the following remarkable beneficial effects: according to the thermochromic polyester release film provided by the invention, the prepared release coating liquid is uniformly coated on the base film by optimizing the composition of the preparation raw materials, and the formed release coating does not adhere to a contacted adhesive tape or an adhesive tape when being separated from the contacted adhesive tape or the adhesive tape and has a certain thermochromic performance; the polyester-based film prepared by compounding the raw materials of the anti-aging polyester resin, the antistatic polyester resin and the thermochromic polyester resin has good heat resistance, aging resistance, antistatic property and thermochromic property; in addition, the release film prepared by the thermochromic release coating liquid and the thermochromic polyester-based film can develop color and change color under the irradiation of ultraviolet rays and visible light, and has the characteristics of low peeling force, stable releasing force and the like. The release film is suitable for military anti-counterfeiting products, buildings and window films for automobiles, can generate reversible color change along with the change of temperature at different temperatures, and has good camouflage and warning functions.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to explain technical contents, structural features, and objects and effects of the invention in detail.
Example 1
A thermochromic polyester release film comprises a polyester base film and a release coating coated on one side surface of the polyester base film, wherein the polyester base film is composed of anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin, and the weight percentages of the components are as follows: 80% of anti-aging polyester resin, 10% of antistatic polyester resin and 10% of thermochromic polyester resin.
The polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 40 micrometers.
The release coating is formed by coating release coating liquid and baking and curing, and the thickness of the release coating is 2 microns.
The release coating liquid is prepared from a main agent, an auxiliary agent and a solvent, wherein the main agent is polyacrylate resin, octadecyl trimethoxy silane and fluorine-containing polymer, and the weight percentage of the main agent is about 20 percent of that of the release coating liquid; the auxiliary agent is phosphorous acid-phenyl diisooctyl ester, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, alkyl sodium sulfonate, neodymium nitrate/lanthanum nitrate thermochromism agent, heat stabilizer and release force regulator, and the weight percentage of the auxiliary agent is about 10 percent of that of the release coating liquid; the solvent is a mixture of at least one or more of isopropyl ether, heptane and butanone, and accounts for about 70% of the release coating liquid by weight.
The preparation method of the thermochromic polyester release film comprises the following steps:
step 1) preparation of thermochromic release coating liquid: adding octadecyltrimethoxysilane, a fluorine-containing polymer and a solvent into a container, and uniformly stirring for 5 minutes by using a pneumatic stirrer to form a mixed solution, wherein the stirring speed is 600 r/min; then adding phosphorous acid-diisooctyl benzene sulfonate into a container, uniformly stirring for 5 minutes, increasing the stirring speed to 900r/min, respectively adding phosphorous acid-diisooctyl benzene sulfonate, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromic agent, heat stabilizer and release force regulator after a certain time, and uniformly stirring; and then adding the polyacrylate resin into a container, stirring for 6 minutes to obtain a mixture, and finally filtering the mixture through a filter screen to obtain a release coating liquid product.
Step 2) preparation of the thermochromic polyester base film mixture: the preparation method comprises the steps of preparing anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin according to the weight percentage of each component, and sending the components into a drying kettle to be dried, wherein the drying time is usually 3 hours, so that the base film mixture is obtained.
Step 3) preparation of the thermochromic polyester release film: adding the prepared thermochromic polyester base film mixture into a screw extruder, and preparing a single-layer thermochromic polyester base film through melt extrusion and bidirectional stretching; then, uniformly coating the release coating liquid on the surface of one side of the base film by an online coating method, wherein the wet coating amount is 10 g/square meter; and finally, carrying out baking curing treatment at the drying temperature of 90 ℃ for 20 seconds, and then rolling and packaging to obtain the finished product of the thermochromic polyester release film.
Example 2
A thermochromic polyester release film comprises a polyester base film and a release coating coated on one side surface of the polyester base film, wherein the polyester base film is composed of anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin, and the weight percentages of the components are as follows: 85% of anti-aging polyester resin, 8% of antistatic polyester resin and 7% of thermochromic polyester resin.
The polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 60 microns.
The release coating is formed by coating release coating liquid and baking and curing, and the thickness of the release coating is 5 microns.
The release coating liquid is prepared from a main agent, an auxiliary agent and a solvent, wherein the main agent is polyacrylate resin, octadecyltrimethoxysilane and a fluorine-containing polymer, and the weight percentage of the main agent is about 25 percent of that of the release coating liquid; the auxiliary agent is phosphorous acid-phenyl diisooctyl ester, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, alkyl sodium sulfonate, neodymium nitrate/lanthanum nitrate thermochromism agent, heat stabilizer and release force regulator, and the weight percentage of the auxiliary agent is about 15 percent of that of the release coating liquid; the solvent is a mixture of at least one or more of isopropyl ether, heptane and butanone, and accounts for about 60% of the release coating liquid by weight.
The preparation method of the thermochromic polyester release film comprises the following steps:
step 1) preparation of thermochromic release coating liquid: adding octadecyltrimethoxysilane, a fluorine-containing polymer and a solvent into a container, and uniformly stirring for 8 minutes by using a pneumatic stirrer to form a mixed solution, wherein the stirring speed is 700 r/min; then adding phosphorous acid-diisooctyl benzene sulfonate into a container, uniformly stirring for 8 minutes, increasing the stirring speed to 1000r/min, respectively adding phosphorous acid-diisooctyl benzene sulfonate, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromic agent, heat stabilizer and release force regulator after a certain time, and uniformly stirring; and then adding the polyacrylate resin into the container, stirring for 8 minutes to obtain a mixture, and finally filtering the mixture through a filter screen to obtain a release coating liquid product.
Step 2) preparation of the thermochromic polyester base film mixture: the preparation method comprises the steps of preparing anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin according to the weight percentage of each component, and sending the components into a drying kettle to be dried, wherein the drying time is usually 4 hours, so that the base film mixture is obtained.
Step 3) preparation of the thermochromic polyester release film: adding the prepared thermochromic polyester base film mixture into a screw extruder, and preparing a single-layer thermochromic polyester base film through melt extrusion and bidirectional stretching; then, uniformly coating the release coating liquid on the surface of one side of the base film by an online coating method, wherein the wet coating amount is 15 g/square meter; and finally, carrying out baking curing treatment at the drying temperature of 100 ℃ for 30 seconds, and then rolling and packaging to obtain the finished product of the thermochromic polyester release film.
Example 3
A thermochromic polyester release film comprises a polyester base film and a release coating coated on one side surface of the polyester base film, wherein the polyester base film is composed of anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin, and the weight percentages of the components are as follows: 90% of anti-aging polyester resin, 5% of antistatic polyester resin and 5% of thermochromic polyester resin.
The polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 100 microns.
The release coating is formed by coating release coating liquid and baking and curing, and the thickness of the release coating is 10 microns.
The release coating liquid is prepared from a main agent, an auxiliary agent and a solvent, wherein the main agent is polyacrylate resin, octadecyltrimethoxysilane and a fluorine-containing polymer, and the weight percentage of the main agent is about 30 percent of that of the release coating liquid; the auxiliary agent is phosphorous acid-phenyl diisooctyl ester, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, alkyl sodium sulfonate, neodymium nitrate/lanthanum nitrate thermochromism agent, heat stabilizer and release force regulator, and the weight percentage of the auxiliary agent is about 20 percent of that of the release coating liquid; the solvent is a mixture of at least one or more of isopropyl ether, heptane and butanone, and accounts for about 50% of the release coating liquid by weight.
The preparation method of the thermochromic polyester release film comprises the following steps:
step 1) preparation of thermochromic release coating liquid: adding octadecyltrimethoxysilane, a fluorine-containing polymer and a solvent into a container, and uniformly stirring for 10 minutes by a pneumatic stirrer to form a mixed solution, wherein the stirring speed is 800 r/min; then adding the phosphorous acid-diisooctyl benzene sulfonate into a container, uniformly stirring for 10 minutes, increasing the stirring speed to 1200r/min, respectively adding the phosphorous acid-diisooctyl benzene sulfonate, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromic agent, heat stabilizer and release force regulator after a certain time, and uniformly stirring; and then adding the polyacrylate resin into a container, stirring for 10 minutes to obtain a mixture, and finally filtering the mixture through a filter screen to obtain a release coating liquid product.
Step 2) preparation of the thermochromic polyester base film mixture: the preparation method comprises the steps of preparing anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin according to the weight percentage of each component, and sending the components into a drying kettle to be dried, wherein the drying time is usually 5 hours, so that the base film mixture is obtained.
Step 3) preparation of the thermochromic polyester release film: adding the prepared thermochromic polyester base film mixture into a screw extruder, and preparing a single-layer thermochromic polyester base film through melt extrusion and bidirectional stretching; then, uniformly coating the release coating liquid on the surface of one side of the base film by an online coating method, wherein the wet coating amount is 20 g/square meter; and finally, carrying out baking curing treatment at the drying temperature of 120 ℃ for 40 seconds, and then rolling and packaging to obtain the finished product of the thermochromic polyester release film.
The performance comparison of the thermochromic polyester release film prepared by the method and the conventional polyester film product is shown in the attached table 1.
Attached table 1: compared with the performance of the conventional polyester film, the thermochromic polyester release film
As can be seen from the table above, the thermochromic polyester release film has good elongation at break, stable tensile strength and peeling force and low thermal shrinkage, and the product performance meets the preset requirements of low peeling force, residual adhesion rate of the silicon-coated layer and thermochromic effect, and can meet the use requirements of packaging and labeling.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all structural equivalents which can be made by using the contents of the present specification, or used directly or indirectly in other related technical fields, shall be included in the scope of the present invention.
Claims (9)
1. The thermochromic polyester release film is characterized by comprising a polyester base film and a release coating coated on the surface of one side of the polyester base film, wherein the polyester base film is composed of an anti-aging polyester resin, an antistatic polyester resin and a thermochromic polyester resin, and the weight percentages of the components are as follows: 80-90% of anti-aging polyester resin, 5-10% of antistatic polyester resin and 5-10% of thermochromic polyester resin; the polyester basal membrane is of a single-layer structure and is prepared by melt extrusion and biaxial stretching, and the thickness of the polyester basal membrane is 40-100 microns.
2. The thermochromic polyester release film according to claim 1, wherein the release coating is formed by coating a release coating solution and baking and curing the coating to a thickness of 2 to 10 μm.
3. The thermochromic polyester release film according to claim 1, wherein the release coating solution is prepared from a main agent, an auxiliary agent and a solvent, wherein the main agent comprises polyacrylate resin, octadecyltrimethoxysilane and fluoropolymer, and the weight percentage of the main agent is about 20-30% of the weight percentage of the release coating solution; the auxiliary agent is phosphorous acid-diisooctyl benzene, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromism agent, heat stabilizer and release force regulator, and the weight percentage of the auxiliary agent is about 10-20% of that of the release coating liquid; the solvent is at least one or a mixture of isopropyl ether, heptane and butanone, and accounts for about 40-70% of the release coating liquid by weight.
4. The thermochromic polyester release film of claim, wherein the polyester resin is any one or a mixture of polyethylene terephthalate resin, polyethylene naphthalate resin, 1.3 trimethylene terephthalate resin, polybutylene terephthalate resin, polyarylate resin or copolyester resin.
5. The thermochromic polyester release film according to claim 1, wherein: the thermochromic polyester is polyethylene glycol terephthalate resin containing an organic reversible thermochromic agent, wherein the organic reversible thermochromic agent is any one or a mixture of more of organic reversible thermochromic agents of spirolactone, bromocresol purple, anthraquinone or quinacridone.
6. The thermochromic polyester release film according to claim 1, wherein the fluoropolymer is one or more of perfluoroalkoxy resin, ethylene-tetrafluoroethylene copolymer, polychlorotrifluoroethylene, polyhexafluoropropylene, polytetrafluoroethylene, polyvinylidene fluoride, and ethylene chlorotrifluoroethylene copolymer.
7. The thermochromic polyester release film according to claim 1, wherein the heat stabilizer is one or a mixture of more of stearate, calcium zinc and organic tin.
8. The in-line coated low-release-force polyester release film according to claim 1, wherein the release force regulator is one or more of a fluorine-containing silicon acrylate copolymer or a polymerization product of octamethylcyclotetrasiloxane and methylsiloxane.
9. A method for preparing the thermochromic polyester release film according to any of claims 1-8, comprising the steps of:
step 1) preparation of thermochromic release coating liquid: adding octadecyltrimethoxysilane, a fluorine-containing polymer and a solvent into a container, and uniformly stirring for 5-10 minutes by a pneumatic stirrer to form a mixed solution, wherein the stirring speed is 600-800 r/min; then adding the diisooctyl benzene phosphite into a container, uniformly stirring for 5-10 minutes, increasing the stirring speed to 900-1200r/min, and respectively adding the diisooctyl benzene phosphite, triethylene tetramine, 2, 6-di-tert-butyl-4-methylphenol, phosphoethyl acrylate, calcium stearate, nano tungsten carbide, sodium alkyl sulfonate, neodymium nitrate/lanthanum nitrate thermochromism agent, heat stabilizer and release force regulator after a certain time, and uniformly stirring; adding polyacrylate resin into a container, stirring for 6-10 minutes to obtain a mixture, and finally filtering the mixture through a filter screen to obtain a release coating liquid product;
step 2) preparation of the thermochromic polyester base film mixture: preparing anti-aging polyester resin, antistatic polyester resin and thermochromic polyester resin according to the weight percentage of each component, and sending the components into a drying kettle for drying, wherein the drying time is usually 3-5 hours, so as to obtain a base film mixture;
step 3) preparation of the thermochromic polyester release film: adding the prepared thermochromic polyester base film mixture into a screw extruder, and preparing a single-layer thermochromic polyester base film through melt extrusion and bidirectional stretching; then, uniformly coating the release coating liquid on the surface of one side of the base film by an online coating method, wherein the wet coating amount is 10-20 g/square meter; finally, the finished product is prepared by baking and curing treatment with the baking temperature of 90-120 ℃ and the baking time of 20-40 seconds, rolling and packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110822713.6A CN113861473A (en) | 2021-07-21 | 2021-07-21 | Thermochromic polyester release film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110822713.6A CN113861473A (en) | 2021-07-21 | 2021-07-21 | Thermochromic polyester release film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113861473A true CN113861473A (en) | 2021-12-31 |
Family
ID=78990209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110822713.6A Pending CN113861473A (en) | 2021-07-21 | 2021-07-21 | Thermochromic polyester release film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113861473A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907303A (en) * | 2016-05-09 | 2016-08-31 | 吉翔宝（太仓）离型材料科技发展有限公司 | Thermochromic release film |
| CN106750466A (en) * | 2017-01-13 | 2017-05-31 | 广东韩亚薄膜科技有限公司 | reversible thermochromic film and preparation method thereof |
| CN110643213A (en) * | 2019-09-27 | 2020-01-03 | 广东鼎立森新材料有限公司 | Light release regulator for silicon release agent and synthesis method and application thereof |
| CN110922911A (en) * | 2019-10-22 | 2020-03-27 | 昆山博益鑫成高分子材料有限公司 | Thermochromic temperature-indicating protective film and adhesive tape |
-
2021
- 2021-07-21 CN CN202110822713.6A patent/CN113861473A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105907303A (en) * | 2016-05-09 | 2016-08-31 | 吉翔宝（太仓）离型材料科技发展有限公司 | Thermochromic release film |
| CN106750466A (en) * | 2017-01-13 | 2017-05-31 | 广东韩亚薄膜科技有限公司 | reversible thermochromic film and preparation method thereof |
| CN110643213A (en) * | 2019-09-27 | 2020-01-03 | 广东鼎立森新材料有限公司 | Light release regulator for silicon release agent and synthesis method and application thereof |
| CN110922911A (en) * | 2019-10-22 | 2020-03-27 | 昆山博益鑫成高分子材料有限公司 | Thermochromic temperature-indicating protective film and adhesive tape |
Non-Patent Citations (2)
| Title |
|---|
| 姚连珍;杨文芳;: "可逆变色微胶囊在纺织工业中的应用", 印染, no. 04, pages 48 - 51 * |
| 张澍声: "可逆热致变色材料", 中小企业科技, no. 07, pages 142 - 378 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7238419B2 (en) | White opaque film having low transparency and improved dielectric strength | |
| JP5271008B2 (en) | Laminated body | |
| CN102990936B (en) | Polyester release film for optics | |
| CN103753924B (en) | A kind of high transparent polyester film and preparation method thereof | |
| KR101707863B1 (en) | Mold release film | |
| WO2012090762A1 (en) | Mold release film | |
| US11059276B2 (en) | Release film for gravure application | |
| CN113861473A (en) | Thermochromic polyester release film and preparation method thereof | |
| CN113817199A (en) | PA modified polyester release film and preparation method thereof | |
| CN113789133A (en) | Double-layer antistatic acrylic protective film and preparation method thereof | |
| CN113817425A (en) | Photochromic polyester release film and preparation method thereof | |
| CN113861812B (en) | Coating liquid for polyester film and application thereof | |
| CN113278387A (en) | Polyester release film with ultra-light release force and preparation method thereof | |
| NL2030061B1 (en) | High-temperature resistant release paper and preparation method and application thereof | |
| CN114479366A (en) | On-line silicon-coated release polyester film added with chemically modified recycled polyester chips as well as production process and application thereof | |
| CN113352715A (en) | PET matte composite release film and preparation method thereof | |
| CN115366515A (en) | Glue reverse adhesion resistant biaxially oriented polylactic acid film and preparation method thereof | |
| WO1994013474A1 (en) | In-line silicone coated biaxially oriented copolyester film and a process for manufacturing the film | |
| CN113183580A (en) | Biaxially oriented polypropylene release film, preparation method thereof and adhesive tape film | |
| KR101722717B1 (en) | Polyester release film | |
| CN110370762A (en) | A kind of blue insulation polyester film and its processing method | |
| JP2001527147A (en) | Low fogging, speckle-free polyester film | |
| CN109320749A (en) | A kind of normal temperature cure silicon systems release film and preparation method thereof | |
| CN215250547U (en) | Vehicle body color changing film | |
| JP7323947B2 (en) | Functional cloth and its manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |