A solvent-free environment-friendly type mica tape and a preparation method thereof
A kind of mica tape, an environment-friendly technology, applied in the field of mica tape, can solve the problems of environmental pollution, waste of raw materials, etc., and achieve the effects of reducing the use of organic solvents, benefiting environmental protection, good wrapping process and insulation performance
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Embodiment 1
[0020] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 60°C, and keep it warm for 30min;
[0021] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 100°C, keep warm for 1 hour, add dioctyl phthalate, then raise the temperature to 130°C, keep warm for 10 minutes, and the adhesive can be obtained;
[0022] 3) Laminate and dry the mica paper, glass fiber cloth and adhesive in the lamination equipment according to the conventional method and proportion, and then cut it into the required specifications.
Embodiment 2
[0024] 1) Put epoxy resin, maleic anhydride and unsaturated polyesterimide resin in the reaction kettle according to the proportion, stir, heat to 75°C, and keep it warm for 60min;
[0025] 2) Continue to add polyester-modified silicone resin to the reaction kettle, raise the temperature to 120°C, keep it warm for 2 hours, then add dioctyl phthalate, then raise the temperature to 145°C, keep it warm for 20 minutes, and the adhesive can be obtained;
[0026] 3) Laminate and dry the mica paper, polyimide film and adhesive in lamination equipment according to conventional methods and proportions, and then cut them into required specifications.
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