A release layer coating liquid and a preparation method of an MLCC release film

Abstract

The present application relates to a kind of off-type layer coating fluid and the preparation method of MLCC off-type film, belong to off-type film technical field, including main agent, auxiliary agent and functional agent, main agent is silicone oil, functional agent includes nano cesium tungsten oxide powder, chlorinated phosphorus cyanide polymer powder and silica gel agent, the composition of auxiliary agent is curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoaming agent and surfactant, and when preparing, step is: first base film is pretreated, then preparation off-type layer coating fluid is coated on base film, finally solidification drying is carried out, when using, by using leveling agent and defoaming agent, improve the surface flatness after producing MLCC off-type film, by nano cesium tungsten oxide powder and chlorinated phosphorus cyanide polymer powder, so that the present technical solution has higher heat insulation and temperature resistance, reduce the influence of external thermal radiation on MLCC, and by silica gel agent, also facilitate to play the effect of protection, reduce abrasion when stacking, improve production effect, convenient to use.

Description

Technical Field

[0001] This invention relates to the field of release film technology, and in particular to a release layer coating liquid and a method for preparing MLCC release film. Background Technology

[0002] MLCC release film is a consumable that must be used in the MLCC production process. During the production of MLCCs, ceramic slurry needs to be coated onto the MLCC release film. After the product is dried and slit, it needs to be stacked in multiple layers. The MLCC release film plays a supporting and surface protection role in the entire production process and is widely used. However, in order to ensure the production quality of MLCCs, there are also high requirements for the quality of the MLCC release film. For example, the surface height difference needs to be controlled within 500nm. Therefore, the production requirements and preparation methods of MLCC release film are subject to high requirements.

[0003] For example, Chinese invention patent CN112538312B discloses a release layer coating liquid for a release film. The main agent of the coating liquid is Shin-Etsu KS-847T silicone oil. The coating liquid also contains a curing agent, a catalyst, an anchoring agent, and a solvent. The mass percentage of Shin-Etsu KS-847T silicone oil in the coating liquid is (6.07~7.33)%. The main agent of this release layer coating liquid is Shin-Etsu KS-847T silicone oil, which gives the coating high stability and smoothness. The addition of a curing agent to the coating liquid components improves the curing speed and stability of the coating, while also increasing the coating speed, thus meeting the needs of high-speed product production. This invention also discloses a method for preparing an MCLL release film.

[0004] For example, Chinese invention patent CN114702714B discloses a release film for MLCCs and its preparation method, which includes a substrate layer, a base layer, and a release layer. The base layer is coated on the substrate layer, and the release layer is coated on the base layer. The base layer is obtained by coating with an acrylic adhesive and then drying it. The raw materials for preparing the acrylic adhesive are composed of 1-5 parts of acrylate polymer resin and 0.1-0.5 parts of curing agent by weight percentage. The release layer is obtained by coating with a release coating liquid and then drying it. This release coating liquid is composed of the following components by weight: 70-100 parts of silicone release agent, 0-30 parts of release force modifier, 2-5 parts of crosslinking agent (hydrogen-containing silicone oil), 0.1-1 part of anchoring agent, 1-5 parts of platinum catalyst, 300-800 parts of 120# solvent, 300-800 parts of D30 solvent, 500-1000 parts of methyl ethyl ketone, and 100-200 parts of isopropanol. The release film for MLCCs of this invention has stable release force and features high flatness and high cleanliness, ensuring uniform film thickness of ceramic green sheets and preventing localized release defects and insufficient cleanliness that could lead to a decrease in yield.

[0005] Although the surface flatness meets the usage requirements, the performance is poor. During production and use, the protection effect on MLCCs and the wear between internal workpieces after stacking are prone to occur. When exposed to external influences, they are also easily affected by external heat. As a result, MLCCs have poor protection against heat radiation during production, making them inconvenient to use. In complex environments, it is difficult to guarantee the quality of NLCC production. Summary of the Invention

[0006] To overcome the technical defects of the existing technology, the present invention provides a release layer coating liquid and a method for preparing MLCC release film, so as to achieve good protection effect and isolate external heat radiation, thereby facilitating the protection of MLCC.

[0007] The technical solution adopted in this invention is: a release layer coating liquid and a method for preparing MLCC release film, comprising a main agent, an auxiliary agent, and a functional agent, wherein the main agent is silicone oil, the functional agent comprises nano-cesium tungsten oxide powder, chlorinated phosphine polymer powder, and a silicone agent, and the auxiliary agent comprises a curing agent, a catalyst, an anchoring agent, a solvent oil, a leveling agent, a defoamer, and a surfactant. In use, the use of nano-cesium tungsten oxide powder, chlorinated phosphine polymer powder, and silicone agent not only improves the heat insulation and temperature resistance performance during use, but also enhances the protective effect on MLCCs through the silicone agent, reducing the impact of external heat radiation on MLCC production and preventing wear during stacking, thus improving the production quality of MLCCs and facilitating their use. Furthermore, the use of leveling agents and defoamers improves surface smoothness during preparation, reducing the occurrence of bubble depressions or uneven thickness, thereby improving the quality of the MLCC release film.

[0008] Preferably, the silicone oil in the main agent accounts for 50-80 parts by weight in the release layer coating liquid. The nano cesium tungsten oxide powder, chlorinated phosphine polymer powder, and silicone agent in the functional agent are in the following weight ratios: 1-5 parts nano cesium tungsten oxide powder, 0.5-3 parts chlorinated phosphine polymer powder, and 10-15 parts silicone agent. The curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer, and surfactant in the auxiliary agent are in the following weight ratios: 0.05-0.08 parts curing agent, 0.02-0.05 parts catalyst, 0.002-0.01 parts anchoring agent, 5-10 parts solvent oil, 0.1-0.5 parts leveling agent, 0.05-0.1 parts defoamer, and 0.02-0.2 parts surfactant. The solvent oil is a mixture of methyl isobutyl ketone, butanone, and toluene.

[0009] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0010] Step 1: Pre-treat the base film;

[0011] Step 2: Prepare the release layer coating solution;

[0012] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0013] Step 4: Curing and drying to complete the preparation.

[0014] Preferably, in step one, when pretreating the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, and then cleaned. After cleaning, the surface of the base film is removed again by electrostatic dust removal. In step two, when preparing the release coating liquid, the auxiliary agent and the functional agent are first prepared separately according to the weight ratio. After mixing, the main agent, the auxiliary agent and the functional agent are then mixed to form the release coating liquid. During mixing, the temperature inside the mixing container is maintained at 70-90°C. After mixing, the mixture is kept at this temperature for 20-30 minutes before use. In step four, after coating, the temperature is controlled at 80-60°C during curing. After curing for 1-2 hours, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed, with the drying temperature controlled at 20-34°C. After drying, a curing treatment is performed, with the curing temperature controlled at 50-60°C and the curing time controlled at 10-15 hours.

[0015] The beneficial effects of this invention are: when used, the surface smoothness of the MLCC release film is improved by employing leveling agents and defoamers; the use of nano-cesium tungsten oxide powder and chlorinated phosphine polymer powder gives this technical solution high heat insulation and temperature resistance, reducing the impact of external heat radiation on MLCCs; and the use of silicone agent also provides a protective effect, reducing wear during stacking, improving production efficiency, and making it convenient to use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the proportions of the ingredients in this invention.

[0017] Figure 2 This is a performance test diagram of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Example 1

[0020] Please see Figure 1-2As shown, a release coating liquid and a method for preparing MLCC release film are disclosed. The method includes a main agent, auxiliary agents, and functional agents. The main agent is silicone oil, and the functional agents include nano-cesium tungsten oxide powder, chlorinated phosphine polymer powder, and silicone agent. The auxiliary agents consist of curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer, and surfactant. When used, the nano-cesium tungsten oxide powder, chlorinated phosphine polymer powder, and silicone agent not only improve the heat insulation and temperature resistance during use but also enhance the protection of the MLCC through the silicone agent. This reduces the impact of external heat radiation on MLCC production and prevents wear during stacking, improving the production quality of the MLCC and facilitating its use. Furthermore, the use of leveling agents and defoamers improves surface smoothness during preparation, reducing the occurrence of air bubbles, depressions, or uneven thickness, thus improving the quality of the MLCC release film.

[0021] The silicone oil in the main agent accounts for 50 parts by weight in the release layer coating liquid. The nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are 1 part nano cesium tungsten oxide powder, 0.5 parts chlorinated phosphine polymer powder and 10 parts silicone agent by weight. The curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agent are 0.05 parts curing agent, 0.02 parts catalyst, 0.002 parts anchoring agent, 5 parts solvent oil, 0.1 parts leveling agent, 0.05 parts defoamer and 0.02 parts surfactant by weight, and the solvent oil is a mixture of methyl isobutyl ketone, methyl ethyl ketone and toluene.

[0022] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0023] Step 1: Pre-treat the base film;

[0024] Step 2: Prepare the release layer coating solution;

[0025] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0026] Step 4: Curing and drying to complete the preparation.

[0027] In step one, during the pretreatment of the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, followed by cleaning. After cleaning, the surface of the base film is cleaned again using electrostatic dust removal. In step two, when preparing the release coating liquid, the additives and functional agents are prepared separately according to the weight ratio. After mixing, the main agent, additives, and functional agents are then mixed to form the release coating liquid. During mixing, the temperature inside the mixing container is maintained at 70°C. After mixing, the mixture is kept at this temperature for 20 minutes before use. In step four, after coating, the curing temperature is controlled at 80°C. After curing for 1 hour, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 20°C. After drying, a curing treatment is performed at 50°C for 10 hours.

[0028] After the preparation was completed, performance testing was conducted, and the test results are as follows: Figure 2 As shown.

[0029] Example 2

[0030] Please see Figure 1-2 As shown, a release coating liquid and a method for preparing MLCC release film are described. The raw materials used in the release coating liquid are the same as those in Example 1, except that: the silicone oil in the main agent accounts for 60 parts by weight in the release coating liquid; the nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are 2 parts by weight of nano cesium tungsten oxide powder, 0.8 parts by weight of chlorinated phosphine polymer powder and 11 parts by weight of silicone agent; the curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agents are 0.06 parts by weight of curing agent, 0.03 parts by weight of catalyst, 0.005 parts by weight of anchoring agent, 6 parts by weight of solvent oil, 0.2 parts by weight of leveling agent, 0.06 parts by weight of defoamer and 0.08 parts by weight of surfactant, and the solvent oil is a mixture of methyl isobutyl ketone, butanone and toluene.

[0031] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0032] Step 1: Pre-treat the base film;

[0033] Step 2: Prepare the release layer coating solution;

[0034] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0035] Step 4: Curing and drying to complete the preparation.

[0036] In step one, during the pretreatment of the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, followed by cleaning. After cleaning, the surface of the base film is cleaned again using electrostatic dust removal. In step two, when preparing the release coating liquid, the additives and functional agents are first prepared separately according to the weight ratio. After mixing, the main agent, additives, and functional agents are then mixed to form the release coating liquid. During mixing, the temperature inside the mixing container is maintained at 75°C. After mixing, the mixture is kept at this temperature for 22 minutes before use. In step four, after coating, the curing temperature is controlled at 78°C. After curing for 1.2 hours, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 25°C. After drying, a curing treatment is performed at 55°C for 12 hours.

[0037] After the preparation was completed, performance testing was conducted, and the test results are as follows: Figure 2 As shown.

[0038] Example 3

[0039] Please see Figure 1-2 As shown, a release coating liquid and a method for preparing MLCC release film are described. The raw materials used in the release coating liquid are the same as those in Example 1, except that: the silicone oil in the main agent accounts for 65 parts by weight in the release coating liquid; the nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are 3 parts by weight of nano cesium tungsten oxide powder, 2 parts by weight of chlorinated phosphine polymer powder and 13 parts by weight of silicone agent; the curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agents are 0.06 parts by weight of curing agent, 0.03 parts by weight of catalyst, 0.005 parts by weight of anchoring agent, 7 parts by weight of solvent oil, 0.3 parts by weight of leveling agent, 0.08 parts by weight of defoamer and 0.1 parts by weight of surfactant, and the solvent oil is a mixture of methyl isobutyl ketone, butanone and toluene.

[0040] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0041] Step 1: Pre-treat the base film;

[0042] Step 2: Prepare the release layer coating solution;

[0043] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0044] Step 4: Curing and drying to complete the preparation.

[0045] In step one, during the pretreatment of the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, followed by cleaning. After cleaning, the surface of the base film is cleaned again using electrostatic dust removal. In step two, when preparing the release layer coating liquid, the additives and functional agents are prepared separately according to the weight ratio. After mixing, the main agent, additives, and functional agents are then mixed to form the release layer coating liquid. During mixing, the temperature inside the mixing container is maintained at 80°C. After mixing, the mixture is kept at this temperature for 25 minutes before use. In step four, after coating, the curing temperature is controlled at 70°C. After curing for 1.5 hours, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 26°C. After drying, a curing treatment is performed at 55°C for 13 hours.

[0046] After the preparation was completed, performance testing was conducted, and the test results are as follows: Figure 2 As shown.

[0047] Example 4

[0048] Please see Figure 1-2 As shown, a release coating liquid and a method for preparing MLCC release film are described. The raw materials used in the release coating liquid are the same as those in Example 1, except that: the silicone oil in the main agent accounts for 65 parts by weight in the release coating liquid; the nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are 4 parts by weight of nano cesium tungsten oxide powder, 2.8 parts by weight of chlorinated phosphine polymer powder and 14 parts by weight of silicone agent; the curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agents are 0.07 parts by weight of curing agent, 0.04 parts by weight of catalyst, 0.008 parts by weight of anchoring agent, 8 parts by weight of solvent oil, 1.4 parts by weight of leveling agent, 0.08 parts by weight of defoamer and 0.15 parts by weight of surfactant, and the solvent oil is a mixture of methyl isobutyl ketone, butanone and toluene.

[0049] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0050] Step 1: Pre-treat the base film;

[0051] Step 2: Prepare the release layer coating solution;

[0052] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0053] Step 4: Curing and drying to complete the preparation.

[0054] In step one, during the pretreatment of the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, followed by cleaning. After cleaning, the surface of the base film is cleaned again using electrostatic dust removal. In step two, when preparing the release coating liquid, the additives and functional agents are prepared separately according to the weight ratio. After mixing, the main agent, additives, and functional agents are then mixed to form the release coating liquid. During mixing, the temperature inside the mixing container is maintained at 85°C. After mixing, the mixture is kept at this temperature for 28 minutes before use. In step four, after coating, the curing temperature is controlled at 65°C. After curing for 1.8 hours, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 30°C. After drying, a curing treatment is performed at 58°C for 14 hours.

[0055] After the preparation was completed, performance testing was conducted, and the test results are as follows: Figure 2 As shown.

[0056] Example 5

[0057] Please see Figure 1-2 As shown, a release coating liquid and a method for preparing MLCC release film are described. The raw materials used in the release coating liquid are the same as those in Example 1, except that: the silicone oil in the main agent accounts for 80 parts by weight in the release coating liquid; the nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are 5 parts by weight of nano cesium tungsten oxide powder, 3 parts by weight of chlorinated phosphine polymer powder and 15 parts by weight of silicone agent; the curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agents are 0.08 parts by weight of curing agent, 0.05 parts by weight of catalyst, 0.01 parts by weight of anchoring agent, 10 parts by weight of solvent oil, 0.5 parts by weight of leveling agent, 0.1 parts by weight of defoamer and 0.2 parts by weight of surfactant, and the solvent oil is a mixture of methyl isobutyl ketone, butanone and toluene.

[0058] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0059] Step 1: Pre-treat the base film;

[0060] Step 2: Prepare the release layer coating solution;

[0061] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0062] Step 4: Curing and drying to complete the preparation.

[0063] In step one, during the pretreatment of the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, followed by cleaning. After cleaning, the surface of the base film is removed again using electrostatic dust removal. In step two, when preparing the release coating liquid, the additives and functional agents are first prepared separately according to the weight ratio. After mixing, the main agent, additives, and functional agents are then mixed to form the release coating liquid. During mixing, the temperature inside the mixing container is maintained at 90°C. After mixing, the mixture is kept at this temperature for 30 minutes before use. In step four, after coating, the curing temperature is controlled at 60°C. After curing for 2 hours, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 34°C. After drying, a curing treatment is performed at 60°C for 15 hours.

[0064] After the preparation was completed, performance testing was conducted, and the test results are as follows: Figure 2 As shown.

[0065] Comparative Example 1

[0066] Please see Figure 1-2 As shown, a release coating liquid and a method for preparing MLCC release film are disclosed. The method includes a main agent and an auxiliary agent. The main agent is silicone oil, and the auxiliary agent consists of a curing agent, a catalyst, an anchoring agent, a solvent oil, a leveling agent, a defoamer, and a surfactant. When used, the leveling agent and the defoamer are employed to improve the surface smoothness during preparation, reduce the problems of bubble depressions or uneven thickness, and improve the quality of the MLCC release film.

[0067] The silicone oil in the main agent accounts for 50 parts by weight in the release layer coating liquid. The curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant in the auxiliary agents are respectively 0.05 parts of curing agent, 0.02 parts of catalyst, 0.002 parts of anchoring agent, 5 parts of solvent oil, 0.1 parts of leveling agent, 0.05 parts of defoamer and 0.02 parts of surfactant. The solvent oil is a mixture of methyl isobutyl ketone, methyl ethyl ketone and toluene.

[0068] A method for preparing a release film for MLCCs, comprising the following steps, using a release layer coating solution during the production of the MLCC release film:

[0069] Step 1: Pre-treat the base film;

[0070] Step 2: Prepare the release layer coating solution;

[0071] Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film;

[0072] Step 4: Curing and drying to complete the preparation.

[0073] In step one, when pretreating the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, and then cleaned. After cleaning, the surface of the base film is removed again by electrostatic dust removal. In step two, when preparing the release layer coating liquid, the additives are first prepared separately according to the weight ratio. After mixing, the main agent and the additives are then mixed to form the release layer coating liquid. During mixing, the temperature inside the mixing container is maintained at 70°C. After mixing, the mixture is kept at this temperature for 20 minutes before use. In step four, after coating, the curing temperature is controlled at 80°C. After curing for 1 hour, the mixture is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying treatment is performed at 20°C. After drying, a curing treatment is performed at 50°C for 10 hours.

[0074] The difference between this comparative example and Example 1 is that no functional agents were added during the preparation process, and performance testing was conducted after preparation. The test results are as follows: Figure 2 As shown.

[0075] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A release layer coating liquid for MLCC release film, characterized in that: It includes a main agent, auxiliary agents and functional agents, wherein the main agent is silicone oil, the functional agents include nano cesium tungsten oxide powder, chlorinated phosphine polymer powder and silicone agent, and the auxiliary agents are composed of curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer and surfactant. The silicone oil in the main agent accounts for 50-80 parts by weight in the release layer coating liquid, and the nano cesium oxide tungsten powder, chlorinated phosphine polymer powder and silicone agent in the functional agent are in the following weight ratios: 1-5 parts nano cesium oxide tungsten powder, 0.5-3 parts chlorinated phosphine polymer powder and 10-15 parts silicone agent. The curing agent, catalyst, anchoring agent, solvent oil, leveling agent, defoamer, and surfactant in the additive are, by weight, 0.05-0.08 parts of curing agent, 0.02-0.05 parts of catalyst, 0.002-0.01 parts of anchoring agent, 5-10 parts of solvent oil, 0.1-0.5 parts of leveling agent, 0.05-0.1 parts of defoamer, and 0.02-0.2 parts of surfactant. The solvent oil is a mixture of methyl isobutyl ketone, butanone, and toluene.

2. A method for preparing a release film for MLCCs, characterized in that, Includes the following steps: Step 1: Pre-treat the base film; Step 2: Prepare the release layer coating solution for the MLCC release film as described in claim 1; Step 3: Apply the release layer coating solution prepared in Step 2 onto the treated base film; Step 4: Curing and drying to complete the preparation.

3. The method for preparing the MLCC release film according to claim 2, characterized in that: In step one, when pretreating the base film, the surface of the base film is first subjected to low-temperature air blowing treatment, and then cleaned. After cleaning, the surface of the base film is cleaned again by electrostatic dust removal.

4. The method for preparing the MLCC release film according to claim 2, characterized in that: In step two, when preparing the release layer coating liquid, the auxiliary agent and the functional agent are first prepared separately according to the weight ratio. After mixing, the main agent, the auxiliary agent and the functional agent are then mixed to form the release layer coating liquid. During mixing, the temperature inside the mixing container is maintained at 70-90℃. After mixing, the mixture is kept at this temperature and allowed to stand for 20-30 minutes before use.

5. The method for preparing the MLCC release film according to claim 2, characterized in that: In step four, after coating, the curing temperature is controlled at 80-60 degrees Celsius. After curing for 1-2 hours, the product is allowed to cool naturally to room temperature. After cooling to room temperature, a low-temperature drying process is performed, with the drying temperature controlled at 20-34 degrees Celsius. After drying, a curing process is performed, with the curing temperature controlled at 50-60 degrees Celsius and the curing time controlled at 10-15 hours.

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