CN115160952A - Low-temperature-resistant release film for low-temperature-cured silicone oil - Google Patents
Low-temperature-resistant release film for low-temperature-cured silicone oil Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0862—Nickel
Abstract
The invention discloses a low-temperature-resistant release film based on low-temperature curing silicone oil, and particularly relates to the technical field of release films.
Description
Technical Field
The invention relates to the technical field of release films, in particular to a low-temperature-resistant release film based on low-temperature curing silicone oil.
Background
Release films are films whose surface energy is differentiated, and release films are not sticky or slightly sticky after being contacted with a particular material under limited conditions.
In general, in order to increase the release force of the plastic film, the plastic film is subjected to plasma treatment, or fluorine coating, or silicon coating release agent is coated on the surface layer of the film material, such as PET, PE, OPP, and the like, so that the release force can be extremely light and stable for various organic pressure-sensitive adhesives, and the release force can be correspondingly adjusted according to different required release film release forces and different viscosities of isolation product adhesives, so that the extremely light and stable release force can be achieved during stripping.
At present, the general curing temperature of the release film in the prior art exceeds 140 ℃, and the excessive curing temperature can generate a thermal deformation phenomenon to the PET release film, so-called hot wrinkle, tension lines and the like, the existence of the hot wrinkle and the tension lines can cause uneven local coating, thereby influencing normal use, the release force is easily influenced by aging, the tensile strength is lower, the damage is easily caused by external force stretching, and because the pasted objects are completely adhered to the surface of the release film, the pull-off is not convenient and quick, and some objects protected by the release film can give off pungent odor, especially in the moment of pulling off the release film, the user experience feeling is poorer, the release film can form white garbage after being used, the environment can be greatly polluted, the ecological environment is seriously influenced, therefore, the research on a novel low-temperature-resistant release film based on low-temperature curing silicone oil is of great significance for solving the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a low-temperature resistant release film based on low-temperature curing silicone oil, and the technical problems to be solved by the invention are as follows: the general curing temperature of the release film in the prior art exceeds 140 ℃, and the too high curing temperature can produce a thermal deformation phenomenon to PET release film, so-called hot wrinkle, tension line etc., thereby the existence of hot wrinkle and tension line can lead to local coating inequality to influence normal use, and release force receives ageing influence easily, and tensile strength is lower, receive external force drawing easily and produce the damage, and because paste article and bond completely on the surface of release film, be not convenient for tear fast, and some article that can give out pungent smell from the protection of type film, especially in the twinkling of an eye of tearing the release film, make user experience feel relatively poor, and can form white rubbish after the use from the type film, can cause very big pollution to the environment, seriously influence ecological environment's problem.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a low temperature resistant from type membrane based on low temperature curing silicone oil, includes the environmental protection enhancement layer, the environmental protection enhancement layer sets up at base member in situ portion, the upper surface and the lower surface on base member layer all are provided with the coating, the one side that the base member was kept away from in the coating is provided with a plurality of indentation grooves, be provided with in the indentation groove and prevent being stained with the layer.
The integral preparation method comprises the following steps:
s1, firstly, blowing a film to obtain a substrate layer.
S2, adhering two sides of the environment-friendly reinforcing layer to the middle of the two substrate layers.
And S3, coating a coating layer on the surface of the substrate layer.
And S4, finally, performing indentation treatment on the surface of the coating layer by using indentation equipment.
As a further scheme of the invention: the environment-friendly reinforcing layer is formed by weaving a plurality of plant fibers in a criss-cross mode, and the plant fibers are degradable straw fibers.
The base layer is formed by mixing modified resin and degradable resin and then blowing a film, and the thickness of the base layer is 75 nanometers.
The coating layer is formed by coating a special release mixed material on the surface of the base layer and then curing at a low temperature.
The manufacturing method of the anti-sticking layer comprises the following steps: and coating a layer of anti-sticking material on the surface of the indentation equipment in the process of processing the indentation groove to obtain the anti-sticking layer.
As a further scheme of the invention: the coating method of the coating layer is one of micro-gravure coating, gravure coating or knife coating, and the coating speed is 50 square meters per minute.
Before coating the coating layer, coating the surface of the substrate layer after corona and dust removal treatment, wherein the coating thickness is 90-100 nanometers, and the surface roughness Ra is less than or equal to 0.2 nanometer.
The width of the indentation groove is 0.2-0.3 mm.
As a further scheme of the invention: the preparation method of the special release mixed material comprises the following steps:
s1, taking 2-3 parts by weight of hydrogen-containing silicone oil with the hydrogen content of 6-9wt%, 3-5 parts of microcrystalline wax, 1-2 parts of antistatic particles, 10-30 parts of vinyl dimethyl silicone oil, 1-3 parts of a catalyst, 1-3 parts of a light stripping additive, 1-2 parts of a curing agent, 50-60 parts of a diluent, 2-3 parts of a deodorizing material and 10-20 parts of a modifier for later use.
The antistatic particles are one or more of copper powder, silver powder, nickel powder or polysulfonic acid compounds, and the light stripping additive is Dow Corning 7200.
S2, uniformly mixing hydrogen-containing silicone oil, vinyl dimethyl silicone oil and a diluent, adding microcrystalline wax, dispersing at a high speed for 5-10 minutes, adding antistatic particles, continuously stirring for 5-8 minutes, uniformly mixing, adding a light stripping additive and a modifier, stirring again for 5-8 minutes to uniformly mix, finally slowly adding a catalyst and a curing agent, and stirring and mixing for 8-10 minutes to form the low-temperature curable release agent.
And S3, adding a deodorizing material into the obtained low-temperature curable release agent, and continuously and uniformly mixing to obtain the special release mixed material.
The preparation method of the odor removing material comprises the following steps: 5-10 parts of 5-mercaptosalicylic acid, 2-3 parts of aromatic additive, 0.06-0.1 part of 2-mercaptoimidazole, 50-100 parts of cosmetic white oil and 2-6 parts of sodium ethoxide, introducing nitrogen to start reaction, and distilling to remove the cosmetic white oil after the reaction is finished to obtain the deodorant material.
As a further scheme of the invention: the catalyst is a platinum catalyst.
The diluting solvent is a mixture of a solvent D-30 and a solvent IPA.
As a further scheme of the invention: the specific preparation method of the substrate layer comprises the following steps:
the modified resin and the degradable resin are uniformly mixed, and then the matrix layer is obtained through high-temperature melting, screw mixing, extrusion casting, stretching, splitting and rolling.
As a further scheme of the invention: the preparation method of the anti-sticking material comprises the following steps:
adding the lubricating oil and the aromatic additive into a mixing device according to the proportion of 5.
As a further scheme of the invention: the aromatic additive is an aromatic additive or an essence extract wrapped by a slow release microcapsule.
The invention has the beneficial effects that:
1. according to the environment-friendly adhesive film, the environment-friendly reinforcing layer formed by weaving the straw fibers is added into the base body layer, so that the base body layer can be uniformly supported and is not easily stretched and damaged by external force, meanwhile, the base body layer is formed by mixing the modified resin and the degradable resin and then blowing the film, has the same degradability as the straw fibers, can be explained after being used, can reduce pollution to the environment to a certain extent, can be cured at low temperature by coating the surface of the base body layer through the developed special release mixed material, and is not easily influenced by aging, and the arrangement of the indentation groove and the anti-adhesive layer can reduce the adhesive area of an adhered article and facilitate quick tearing;
2. according to the invention, the antistatic particles are added into the special release mixed material, so that both surfaces of the release film have good conductivity on the premise of keeping the release function of the release film in the prior art, static electricity generated on the surface of the release film can be effectively and timely conducted away, and the static electricity is prevented from being accumulated on the surface of the release film to adsorb dirt such as dust, hair and the like, so that the release film product is more convenient to clean.
Drawings
FIG. 1 is a schematic front perspective view of the present invention;
FIG. 2 is a schematic bottom perspective view of the present invention;
in the figure: 1. an environment-friendly reinforcing layer; 2. a substrate layer; 3. a coating layer; 4. a indentation groove; 5. and a sticking prevention layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-2, a low temperature resistant release film for low temperature curing silicone oil comprises an environment-friendly reinforcing layer, wherein the environment-friendly reinforcing layer is arranged inside a substrate layer, and coating layers are arranged on the upper surface and the lower surface of the substrate layer.
The integral preparation method comprises the following steps:
s1, firstly, blowing a film to obtain a substrate layer.
S2, adhering two sides of the environment-friendly reinforcing layer to the middle of the two substrate layers.
And S3, coating a coating layer on the surface of the substrate layer.
The environment-friendly reinforcing layer is formed by weaving a plurality of plant fibers in a criss-cross mode, and the plant fibers are degradable straw fibers.
The matrix layer is formed by blowing a film after mixing modified resin and degradable resin, and the thickness of the matrix layer is 75 nanometers.
The coating layer is formed by coating a special release mixed material on the surface of the base layer and then curing at low temperature.
The coating method of the coating layer is one of micro-gravure coating, gravure coating or blade coating, the coating speed is 50 square meters per minute, and the blade coating is adopted in the embodiment.
Before coating the coating layer, coating the surface of the substrate layer after corona and dust removal treatment, wherein the coating thickness is 90-100 nanometers, and the surface roughness Ra is less than or equal to 0.2 nanometer.
The width of the indentation groove is 0.2-0.3 mm, and the width of the indentation groove is 0.3 mm in the embodiment.
The preparation method of the special release mixed material comprises the following steps:
s1, taking 2-3 parts by weight of hydrogen-containing silicone oil with the hydrogen content of 6-9wt%, 3-5 parts of microcrystalline wax, 1-2 parts of antistatic particles, 10-30 parts of vinyl dimethyl silicone oil, 1-3 parts of a catalyst, 1-3 parts of a light stripping additive, 1-2 parts of a curing agent, 50-60 parts of a diluent, 2-3 parts of a deodorizing material and 10-20 parts of a modifier for later use.
The antistatic particles are one or more of copper powder, silver powder, nickel powder or polysulfonic acid compounds, the copper powder is adopted in the embodiment, and the light stripping additive is Dow Corning 7200.
S2, uniformly mixing hydrogen-containing silicone oil, vinyl dimethyl silicone oil and a diluent, adding microcrystalline wax, dispersing at a high speed for 5 minutes, adding antistatic particles, continuously stirring for 5 minutes, uniformly mixing, adding a light stripping additive and a modifier, stirring for 5 minutes again to uniformly mix, finally slowly adding a catalyst and a curing agent, and stirring and mixing for 8 minutes to form the low-temperature curable release agent.
And S3, adding a deodorizing material into the obtained low-temperature curable release agent, and continuously and uniformly mixing to obtain the special release mixed material.
The preparation method of the deodorizing material comprises the following steps: according to parts by weight, 5-10 parts of 5-mercaptosalicylic acid, 2-3 parts of an aromatic additive, 0.06-0.1 part of 2-mercaptoimidazole, 50-100 parts of cosmetic-grade white oil and 2-6 parts of sodium ethoxide, introducing nitrogen to start reaction, and distilling to remove the cosmetic-grade white oil after the reaction is finished, so as to obtain the deodorizing material.
The catalyst is a platinum catalyst.
The dilution solvent is a mixture of solvent D-30 and solvent IPA.
The specific preparation method of the substrate layer comprises the following steps:
the modified resin and the degradable resin are uniformly mixed, and then the matrix layer is obtained through high-temperature melting, screw mixing, extrusion casting, stretching, splitting and rolling.
The aromatic additive is aromatic additive or essence extract encapsulated by sustained-release microcapsule.
Example 2:
as shown in figures 1-2, the low-temperature-resistant release film based on the low-temperature-curing silicone oil comprises a substrate layer, wherein coating layers are arranged on the upper surface and the lower surface of the substrate layer, a plurality of indentation grooves are formed in the surface, away from the substrate, of each coating layer, and anti-sticking layers are arranged in the indentation grooves.
The integral preparation method comprises the following steps:
s1, firstly, blowing a film to obtain a substrate layer.
And S2, coating a coating layer on the surface of the substrate layer.
And S3, finally, performing indentation treatment on the surface of the coating layer by using indentation equipment.
The base layer is formed by blowing a film after mixing modified resin and degradable resin, and the thickness of the base layer is 75 nanometers.
The coating layer is formed by coating a special release mixed material on the surface of the base layer and then curing at low temperature.
The manufacturing method of the anti-sticking layer comprises the following steps: and in the process of processing the indentation groove, coating a layer of anti-sticking material on the surface of indentation equipment to obtain an anti-sticking layer.
The coating method of the coating layer is one of micro gravure coating, gravure coating or knife coating, and the coating speed is 50 square meters per minute.
Before coating the coating layer, coating the surface of the substrate layer after corona and dust removal treatment, wherein the coating thickness is 90-100 nanometers, and the surface roughness Ra is less than or equal to 0.2 nanometer.
The width of the indentation groove is 0.2-0.3 mm.
The preparation method of the special release mixed material comprises the following steps:
s1, taking 2-3 parts by weight of hydrogen-containing silicone oil with the hydrogen content of 6-9wt%, 3-5 parts of microcrystalline wax, 1-2 parts of antistatic particles, 10-30 parts of vinyl dimethyl silicone oil, 1-3 parts of a catalyst, 1-3 parts of a light stripping additive, 1-2 parts of a curing agent, 50-60 parts of a diluent, 2-3 parts of a deodorizing material and 10-20 parts of a modifier for later use.
In this embodiment, the mixture of nickel powder and polysulfonic acid compounds is adopted, and the light stripping additive is dow corning 7200.
S2, uniformly mixing hydrogen-containing silicone oil, vinyl dimethyl silicone oil and a diluent, adding microcrystalline wax, dispersing at a high speed for 5-10 minutes, adding antistatic particles, continuously stirring for 5-8 minutes, uniformly mixing, adding a light stripping additive and a modifier, stirring again for 5-8 minutes to uniformly mix, finally slowly adding a catalyst and a curing agent, and stirring and mixing for 8-10 minutes to form the low-temperature curable release agent.
And S3, adding a deodorizing material into the obtained low-temperature curable release agent, and continuously and uniformly mixing to obtain the special release mixed material.
The preparation method of the deodorizing material comprises the following steps: 5-10 parts of 5-mercaptosalicylic acid, 2-3 parts of aromatic additive, 0.06-0.1 part of 2-mercaptoimidazole, 50-100 parts of cosmetic white oil and 2-6 parts of sodium ethoxide, introducing nitrogen to start reaction, and distilling to remove the cosmetic white oil after the reaction is finished to obtain the deodorant material.
The catalyst is a platinum catalyst.
The diluting solvent is a mixture of the solvent D-30 and the solvent IPA.
The specific preparation method of the substrate layer comprises the following steps:
the modified resin and the degradable resin are uniformly mixed, and then the matrix layer is obtained through high-temperature melting, screw mixing, extrusion casting, stretching, splitting and rolling.
The preparation method of the anti-sticking material comprises the following steps:
and (3) adding the lubricating oil and the aromatic additive into a mixing device according to the proportion of 5.
The aromatic additive is aromatic additive or essence extract encapsulated by slow release microcapsule.
Example 3:
as shown in figures 1-2, a low temperature resistant release film for low temperature curing silicone oil comprises an environment-friendly reinforcing layer, wherein the environment-friendly reinforcing layer is arranged inside a base layer, the upper surface and the lower surface of the base layer are both provided with a coating layer, one surface of the coating layer, which is far away from the base body, is provided with a plurality of indentation grooves, and the indentation grooves are internally provided with anti-sticking layers.
The integral preparation method comprises the following steps:
s1, firstly, blowing a film to obtain a substrate layer.
S2, adhering two sides of the environment-friendly reinforcing layer to the middle of the two substrate layers.
And S3, coating a coating layer on the surface of the substrate layer.
And S4, finally, performing indentation treatment on the surface of the coating layer by using indentation equipment.
The environment-friendly reinforcing layer is formed by weaving a plurality of plant fibers in a criss-cross mode, and the plant fibers are degradable straw fibers.
The base layer is formed by blowing a film after mixing modified resin and degradable resin, and the thickness of the base layer is 75 nanometers.
The coating layer is formed by curing a release material coated on the surface of the base layer.
The manufacturing method of the anti-sticking layer comprises the following steps: and coating a layer of anti-sticking material on the surface of the indentation equipment in the process of processing the indentation groove to obtain the anti-sticking layer.
The coating method of the coating layer is one of micro gravure coating, gravure coating or knife coating, and the coating speed is 50 square meters per minute.
Before coating the coating layer, coating the surface of the substrate layer after corona and dust removal treatment, wherein the coating thickness is 90-100 nanometers, and the surface roughness Ra is less than or equal to 0.2 nanometer.
The width of the indentation groove is 0.2-0.3 mm.
The specific preparation method of the substrate layer comprises the following steps:
the modified resin and the degradable resin are uniformly mixed, and then the matrix layer is obtained through high-temperature melting, screw mixing, extrusion casting, stretching, splitting and rolling.
The preparation method of the anti-sticking material comprises the following steps:
adding the lubricating oil and the aromatic additive into a mixing device according to the proportion of 5.
The aromatic additive is aromatic additive or essence extract encapsulated by slow release microcapsule.
Comparative example 1:
the difference from the examples 1-3 is that the release agent is different from the release agent selected, and the release agent is vinyl organic silicone oil resin and Sn catalytic curing system.
And (3) determining the influence of degradability, tensile strength, curing temperature and aging on the release force, whether the release film is convenient to tear and the user experience feeling of the release film obtained in each embodiment and comparative example.
The determination method comprises the following steps:
1. the testing method of the degradability comprises the following steps:
the release films obtained in example 1, example 2, example 3 and comparative example 3 were buried in soil, respectively, and degraded to obtain a degradation rate of 30 days.
2. Tensile strength test method:
the release films obtained in example 1, example 2, example 3 and comparative example 3 were subjected to a tensile test to obtain a tensile strength value (Mba), and the average value of 5 values was used as a test result.
3. Testing of curing temperature:
different curing temperatures were recorded during the fabrication process.
4. The test method for the influence of aging on the release force comprises the following steps:
coating the detection glue on the surface of the detection strip, drying, using a laminating machine to respectively laminate the detection strip on the surfaces of the release films obtained in the embodiments 1, 2, 3 and 3 under the pressure of 2KG to obtain a detection adhesive tape, standing for 24 hours under the conditions that the temperature and the humidity are respectively controlled at 25 +/-3 ℃ and 50 +/-10%, then mounting the adhesive tape on a clamp, stretching the adhesive tape at 180 degrees by using a tensile machine at different temperatures, wherein data displayed by a computer of the tensile machine is the release force (g/in) of the test piece, and taking the average value of 5 numerical values as a test result.
5. Test whether it is convenient to tear:
the release films obtained in the embodiment 1, the embodiment 2, the embodiment 3 and the comparative example 3 are respectively connected with articles, a laminating machine is used for laminating, and a plurality of groups of workers respectively perform tearing tests to judge whether tearing is convenient.
6. Testing user experience:
the release films obtained in the embodiments 1, 2, 3 and 3 are respectively connected with an article, and are attached by using an attaching machine, and a plurality of groups of workers respectively perform tearing tests to judge whether the smell is pungent and affects the experience.
The results of the assay are shown in the following table:
remarking: each value is an average of the results of a plurality of measurements.
In conclusion, the release film obtained in the comparative example 1 has a low degradation rate and a low tensile strength, requires a high curing temperature, is easy to change due to the temperature, is inconvenient to tear during actual operation and use, has a poor user experience, and has a certain pungent smell during tearing.
The environment-friendly reinforced layer knitted by straw fibers is added into the base layer, so that the base layer can be uniformly supported and is not easily stretched and damaged by external force, meanwhile, the base layer is formed by mixing modified resin and degradable resin and then blowing the film, has the same degradability as the straw fibers, can be explained after being used, can reduce the pollution to the environment to a certain extent, can be solidified at low temperature and is not easily influenced by aging, the sticking area of a stuck article is reduced by the arrangement of the mark pressing groove and the anti-sticking layer, and is convenient and quick to tear, meanwhile, a certain amount of aromatic additive is added into the anti-sticking layer and the specially-made release mixed material, so that the pungent smell emitted by colloid on the surface of the article when the release film is torn can be reduced, the user experience feeling is greatly improved, and the anti-static particles are added into the specially-made release mixed material, so that the two surfaces of the release film can have good electric conductivity, the static generated on the surface of the release film can be effectively guided away, and the hair can be prevented from being adsorbed on the release film and being more conveniently and collected on the release film under the premise that the release function of the release film in the prior art is kept.
The points to be finally explained are: although the present invention has been described in detail with reference to the general description and the specific embodiments, on the basis of the present invention, the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a low temperature resistant from type membrane based on low temperature curing silicone oil, includes environmental protection enhancement layer, its characterized in that: the environment-friendly reinforcing layer is arranged inside the base body layer, coating layers are arranged on the upper surface and the lower surface of the base body layer, a plurality of indentation grooves are formed in one surface, away from the base body, of each coating layer, and anti-sticking layers are arranged in the indentation grooves;
the integral preparation method comprises the following steps:
s1, firstly, blowing a film to obtain a substrate layer;
s2, bonding two surfaces of the environment-friendly reinforcing layer to the middle of the two substrate layers;
s3, coating a coating layer on the surface of the substrate layer;
and S4, finally, performing indentation treatment on the surface of the coating layer by using indentation equipment.
2. The low-temperature-resistant release film for low-temperature-curing silicone oil according to claim 1, characterized in that: the environment-friendly reinforcing layer is formed by weaving a plurality of plant fibers in a criss-cross mode, and the plant fibers are degradable straw fibers;
the base layer is formed by mixing modified resin and degradable resin and then blowing a film, and the thickness of the base layer is 75 nanometers;
the coating layer is formed by coating a special release mixed material on the surface of the base layer and then curing at a low temperature;
the manufacturing method of the anti-sticking layer comprises the following steps: and coating a layer of anti-sticking material on the surface of the indentation equipment in the process of processing the indentation groove to obtain the anti-sticking layer.
3. The low-temperature resistant release film based on low-temperature curing silicone oil as claimed in claim 2, wherein: the coating method of the coating layer is one of micro-gravure coating, gravure coating or blade coating, and the coating speed is 50 square meters per minute;
before coating the coating layer, coating the surface of the substrate layer after corona and dust removal treatment, wherein the coating thickness is 90-100 nanometers, and the surface roughness Ra is less than or equal to 0.2 nanometer;
the width of the indentation groove is 0.2-0.3 mm.
4. The low-temperature-resistant release film for low-temperature-curing silicone oil according to claim 2, characterized in that: the preparation method of the special release mixed material comprises the following steps:
s1, taking 2-3 parts by weight of hydrogen-containing silicone oil with the hydrogen content of 6-9wt%, 3-5 parts of microcrystalline wax, 1-2 parts of antistatic particles, 10-30 parts of vinyl dimethyl silicone oil, 1-3 parts of a catalyst, 1-3 parts of a light stripping additive, 1-2 parts of a curing agent, 50-60 parts of a diluent, 2-3 parts of a smell removing material and 10-20 parts of a modifier for later use;
the antistatic particles are one or more of copper powder, silver powder, nickel powder or polysulfonic acid compounds, and the light stripping additive is Dow Corning 7200.
S2, uniformly mixing hydrogen-containing silicone oil, vinyl dimethyl silicone oil and a diluent, adding microcrystalline wax, dispersing at a high speed for 5-10 minutes, adding antistatic particles, continuously stirring for 5-8 minutes, uniformly mixing, adding a light stripping additive and a modifier, stirring again for 5-8 minutes to uniformly mix, finally slowly adding a catalyst and a curing agent, and stirring and mixing for 8-10 minutes to form a low-temperature curable release agent;
s3, adding a smell removing material into the obtained low-temperature curable parting agent, and continuously and uniformly mixing to obtain a special parting mixed material;
the preparation method of the odor removing material comprises the following steps: according to parts by weight, 5-10 parts of 5-mercaptosalicylic acid, 2-3 parts of an aromatic additive, 0.06-0.1 part of 2-mercaptoimidazole, 50-100 parts of cosmetic-grade white oil and 2-6 parts of sodium ethoxide, introducing nitrogen to start reaction, and distilling to remove the cosmetic-grade white oil after the reaction is finished, so as to obtain the deodorizing material.
5. The low-temperature-resistant release film for low-temperature-curing silicone oil according to claim 4, wherein the low-temperature-resistant release film comprises: the catalyst is a platinum catalyst;
the diluting solvent is a mixture of a solvent D-30 and a solvent IPA.
6. The low-temperature resistant release film based on low-temperature curing silicone oil as claimed in claim 2, wherein: the specific preparation method of the substrate layer comprises the following steps:
the modified resin and the degradable resin are uniformly mixed, and then the matrix layer is obtained through high-temperature melting, screw mixing, extrusion casting, stretching, splitting and rolling.
7. The low-temperature-resistant release film for low-temperature-curing silicone oil according to claim 3, characterized in that: the preparation method of the anti-sticking material comprises the following steps:
adding the lubricating oil and the aromatic additive into a mixing device according to the proportion of 5.
8. The low temperature resistant release film for low temperature curing silicone oil according to claim 7, wherein: the aromatic additive is an aromatic additive or an essence extract wrapped by a slow-release microcapsule.
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