Release film for MLCC and preparation method thereof
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A release film, lamination technology, applied in coatings, polyurea/polyurethane coatings, epoxy coatings, etc., can solve the problems of curing deformation, deformation, affecting the quality of lamination capacitors, etc.
Active Publication Date: 2020-07-10
DONGGUAN DINGLI FILM TECH
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Second, in the preparation process of the multilayer capacitor (MLCC), during the drying process of the release film and the ceramic slurry, the temperature rises, and the 50um ultra-thin release fi
Method used
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Embodiment 1
[0030] The release film for laminated capacitors, in parts by weight, its preparation raw materials include:
[0031]
[0032] Wherein, the solvent is selected from the mixture of methanol, ethylene glycol, n-heptane, butanone, and ethyl acetate, and the ratio of methanol, ethylene glycol, n-heptane, butanone, and ethyl acetate is 1:1 :3:3:1. The average particle size of the platinum-carbon catalyst is 40 μm, and the platinum content is 3%-6%. In the mixture of nano zirconia and nano zinc oxide, the particle size of the nano zirconia and nano zinc oxide particles is 100nm.
[0033] The method for preparing a release film using the raw materials of the above-mentioned components and content, the steps include:
[0034] (1) Add polymethylhydrosiloxane, methanol, ethylene glycol, n-heptane, butanone, and ethyl acetate into container A (such as a stainless steel bucket), and stir with a stirrer at a stirring speed of 700r / min. Stirring time is 3min;
[0035] (2) Then add po...
Embodiment 2
[0041] The release film for laminated capacitors, in parts by weight, its preparation raw materials include:
[0042]
[0043] Wherein, the solvent is selected from the mixture of methanol, ethylene glycol, n-heptane, butanone, and ethyl acetate, and the ratio of methanol, ethylene glycol, n-heptane, butanone, and ethyl acetate is 1:1 :2:4:1. The average particle size of the platinum-palladium carbon bimetallic catalyst is 60 μm, and the platinum content is 5%-12%. In the mixture of nano-zirconia and nano-zinc oxide, the particle size of the nano-zirconia and nano-zinc oxide particles is 150nm.
[0044]The preparation method of the release film for the laminate capacitor in this embodiment is the same as that in Embodiment 1, so no detailed description is given here.
Embodiment 3
[0046] The preparation method of the release film for the laminated capacitor of this example is basically the same as that of Example 1, except that polyurethane resin is used as the spreading agent in Example 3, and flexible epoxy vinyl resin is used as the spreading agent in Example 1.
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Abstract
The invention provides a release film for a MLCC. The preparation raw materials comprise: 8-12 parts of silicone oil, 70-85 parts of a solvent, 0.5-1.5 parts of a catalyst, 1-2.5 parts of an anchoringagent, 5-8 parts of a lubricant, 1-7 parts of an organic adhesive, 0.2-0.7 part of an organic adhesive curing agent, 1-7 parts of an inorganic adhesive, 0.2-0.7 part of an inorganic adhesive curing agent and 3-5 parts of an extension agent. The organic adhesive is selected from at least one of alkylphenol formaldehyde resin, resorcinol formaldehyde resin and thermosetting alkyl phenolic resin; the organic adhesive curing agent is selected from at least one of paraformaldehyde or hexamethylenetetramine, the inorganic adhesive is selected from nano copper oxide-phosphoric acid inorganic adhesive or aluminum dihydrogen phosphate inorganic adhesive, and the inorganic adhesive curing agent is selected from a mixture of nano zirconium oxide and nano zinc oxide. The release film has excellent high-temperature resistance and smoothness, and can be prevented from being abraded, scratched and deformed by heating. The invention further provides a preparation method of the release film for the MLCC.
Description
technical field [0001] The invention relates to the technical field of release films, in particular to a release film for laminate capacitors and a preparation method thereof. Background technique [0002] The release film is a film material that is not sticky or slightly sticky after contacting with a specific material under limited conditions. At present, the reason why the PET release film has a release effect is mainly because the surface is coated with a layer of silicone oil or fluorine silicone oil with a barrier effect. [0003] The clay layer required for multilayer capacitors (MLCC) is made by uniform casting of liquid clay (ie ceramic slurry) on the surface of the release film and drying at high temperature. The release film is mainly used to carry the clay layer during casting coating, and its release surface must be smooth and smooth, without defects such as rubbing spots and scratched lines. First, if the release film is partially unevenly coated after curing...
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