Special packing of high electrical insulating property capacitor film and preparation method of special packing
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A technology of capacitor film and insulation, which is applied in the field of high electrical insulation capacitor film special filler and its preparation, can solve the problems of low density, poor low temperature impact resistance, easy aging and other problems, and achieve small thermal expansion coefficient, high electrical insulation, The effect of improving mechanical strength
Inactive Publication Date: 2015-01-07
TONGLING XINLI ELECTRONICS
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Although simple polypropylene (PP) film has the outstanding advantages of heat resistance and corrosion resistance, and the product can be sterilized by steam, and its density is small, it is the lightest general-purpose plastic; but it has the disadvantages of poor low temperature impact resistance and easy aging
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[0013] A special filler for capacitor films with high electrical insulation, made of the following raw materials in parts by weight (kg): poly-4-methyl-1-pentene 1.5, magnesium oxide powder 5, silane coupling agent 1.5, cerium carbonate 1.5 , thiourea 2.5, muscovite 17, aluminum silicate 5, dipentaerythritol 1.5, barium stearate 4, calcium stearate 2.5, medical stone powder 58, water, 5% hydrochloric acid, additive 18;
[0014] The auxiliary agent is made of the following raw materials in parts by weight (kg): 1.5 dimethylacetamide, 1.3 liquid paraffin, 0.6 sodium benzoate, 2.5 activated calcium carbonate, 6 bamboo charcoal powder, 13 3.5% sodium hydroxide solution, and Iron 0.5, Swire oil 0.1, ethyl acrylate 2.5, methyl acrylate 1.3, osmanthus essential oil 0.1, thiophosphobutyloctyl zinc salt 0.2, ammonium bicarbonate 0.3, beryllium oxide 0.7, tributyl phosphate 0.4, calcium sulfite 0.5, Potassium persulfate 0.1, ammonium persulfate 0.1, appropriate amount of water; the prep...
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Abstract
The invention discloses special packing of a high electrical insulating property capacitor film. The special packing is prepared from the following raw materials in parts by weight: 1-2 parts of poly-4-methyl-1-amylene, 4-6 parts of magnesia powder, 1-2 parts of a silane coupling agent, 1-2 parts of cerous carbonate, 2-3 parts of thiourea, 15-18 parts of white mica, 4-6 parts of aluminum silicate, 1-1.4 parts of dipentaerythritol, 3-5 parts of barium stearate, 2-3 parts of calcium stearate, 55-60 parts of medical stone powder, a proper amount of water, a proper amount of 4-6% hydrochloric acid and 15-20 parts of additives. Due to the addition of white mica and aluminum silicate, the mechanical strength, the toughness, the anti-aging property and the corrosion resistance of the capacitor film are improved, and the special packing has very high properties such as electric insulating property, acid-alkali corrosion resistance, elasticity, toughness, sliding property, thermal resistance and small thermal expansion coefficients; due to the adoption of the medical stone powder, the cost is lowered, and the reinforcing property is good; due to the adoption of the additives, the dispersity and the reinforcing property of the packing are improved, and the strength and the impact-resisting toughness of the capacitor film are improved.
Description
technical field [0001] The invention belongs to the field of capacitors, in particular to a special filler for high electrical insulation capacitor films and a preparation method thereof. Background technique [0002] Film capacitors are excellent capacitors due to their many excellent characteristics. Although pure polypropylene (PP) film has the outstanding advantages of heat resistance, corrosion resistance, products can be sterilized by steam, and low density, it is the lightest general-purpose plastic; but it has the disadvantages of poor low temperature impact resistance and easy aging. Therefore, it is necessary to modify the film. In addition, the power of film capacitors is increasing at present. In order to prevent breakdown and prolong the service life of capacitors, it is necessary to increase the insulation performance of capacitor films. One of the modification methods is to improve the filler. Contents of the invention [0003] The object of the present i...
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