Filling special for anti-corrosion weather resistance capacitor thin film and preparation method thereof

Abstract

The invention provides a filling special for an anti-corrosion weather resistance capacitor thin film. The raw materials of the filling comprise, by weight, 1-2 parts of stearic acid, 2-3 parts of diisobutyl phthalate, 11-15 parts of zinc oxide, 3-5 parts of lanthanum hydroxide, 3-5 parts of diboron trioxide, 10-12 parts of wollastonite powder, 2-3 parts of triethanolamine, 2-3 parts of diisopropanolamine, 2-3 parts of molybdenum boride, 50-55 parts of municipal sludge, a proper amount of 5%-7% concentration of hydrochloric acid, a proper amount of water and 15-20 parts of additives. The filling is fine and even in particles and good in reinforcement performance, and the thin film strength is high; the wollastonite powder and the zinc oxide are added, so that the dielectric property, heat-resistant quality and weather resistance ability of the thin film can be improved; the triethanolamine and the diisopropanolamine are added, so that the corrosion resistant performance is good, and the service life of the thin film is prolonged; by the adoption of the municipal sludge, cost is reduced, fineness is high and the reinforcement performance is good; by the adoption of the additives, the dispersibility and the reinforcement performance of the filling can be improved, and the strength and impact resistance toughness of the thin film can be improved.

Description

technical field [0001] The invention belongs to the field of capacitor films, in particular to a special filler for corrosion-resistant and weather-resistant capacitor films and a preparation method thereof. Background technique [0002] Film capacitors are excellent capacitors due to their many excellent characteristics. Its main characteristics are as follows: non-polarity, high insulation resistance, excellent frequency characteristics (broad frequency response), and low dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the part where the signals are cross-connected, capacitors with good frequency characteristics and extremely low dielectric loss must be used to ensure that the signal will not be distorted when it is transmitted. [0003] Among all plastic film capacitors, polypropylene (PP) capacitors and polystyrene (PS) capacitors have the most prominent characteristics, so in recent years, the frequency...

AI Technical Summary

Problems solved by technology

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

Polystyrene (PS) film has extremely high transparency, good electrical insulation performance, easy coloring, good processing fluidity, good rigidity and good chemical corrosion resistance, but relatively brittle, low impact strength, prone to stress cracking, heat resistance Poor performance and not resistant to boiling water; therefore, the film needs to be modified