Mica piece with high surface tearing strength and forming method thereof
A technology with tear resistance and high surface, applied in the direction of electrical components, fiber types, structural parts, etc., it can solve the problems of the surface layer of mica products falling off and mica products being scrapped, and achieve good surface tear resistance and high heat resistance. The effect of good resistance to surface tearing strength
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preparation example 1
[0055] The preparation method of zirconia: 5.0L of 10% sodium hydroxide solution is added to the stirring and grinding machine, and then 200g of zirconium oxychloride (Aladdin) is gradually added to the sodium hydroxide solution in the stirring and grinding machine, and the temperature is controlled At 4°C, stir and grind at 60rpm for 60min, wash the mixture and let it settle for 2h, wash with ethanol, filter, dry at 30°C to obtain a semi-finished product, put the semi-finished product in a planetary ball mill, and ball mill at 100rpm for 40min to obtain Zirconia powder, the obtained zirconia powder is calcined at 1050°C±5°C for 2 hours, and naturally cooled to obtain t-phase zirconia.
preparation example 2
[0057] The modified coating is prepared from the following raw materials in mass percentage: 24% waterborne polyurethane, 2.5% Degussa nonionic wetting and dispersing agent BREAK-THRU DA 646, 1% Foamaster MO 2190 defoamer, 4% organic Silicon substrate wetting agent, 2% propylene glycol phenyl ether, 1% Wante VANTEX-T, 55.5% deionized water, 5.71% synthetic mica, 2.86% graphene, 1.14% of the Zirconia and 0.29% yttria.
[0058] The purchased 40-mesh fluorophlogopite was placed in a planetary ball mill, ball milled at 120 rpm for 15 minutes, and sieved with a 1000-mesh sieve to obtain fluorophlogopite with a particle size of less than 1000 mesh. The purchased graphene is placed in a planetary ball mill, ball milled at 60 rpm for 60 minutes, and sieved with a 1200 mesh screen to obtain graphene with a particle size of less than 1200 mesh. The purchased diyttrium trioxide powder is placed in a planetary ball mill, ball milled at 120 rpm for 15 minutes, and sieved with a 1000 mesh ...
preparation example 3
[0066] The preparation of mica powder composition comprises the following steps:
[0067] S1, put 10kg of muscovite into a planetary ball mill, mill it at 120rpm for 10min, and sieve it with a 1000 mesh screen to obtain muscovite with a particle size of less than 1000mesh; put 5kg of biotite into a planetary ball mill, mill it at 150rpm for 10min, and use 1000 Purpose sieve sieving to obtain biotite with particle size less than 1000 mesh, put 5kg of fluorphlogopite into planetary ball mill, ball mill with 120rpm for 10min, and sieve with 1000 mesh sieve to obtain fluorphlogopite with particle size less than 1000 mesh;
[0068] S2, weighing 1000g of muscovite mica with a particle size of less than 1000 mesh, 100g of biotite with a particle size of less than 1000 mesh, and 200g of fluorophlogopite with a particle size of less than 1000 mesh, placed in a high-speed dispersion kettle, and mixed for 8 minutes at a speed of 200rpm to obtain a mica powder composition.
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