Packing specially used for heat-resistant wear-resistant capacitor film and preparation method of packing

Abstract

The invention discloses packing specially used for a heat-resistant wear-resistant capacitor film. The packing is prepared from the following raw materials in parts by weight: 4-6 parts of phosphite ester, 0.8-1 part of turpentine, 0.5-0.8 part of white oil, 0.1-0.2 part of butyl naphthalene sulfonic acid sodium salt, 0.1-0.2 part of hydroxyl alkylphenol ethoxylates, 0.4-0.7 part of maleic anhydride, 0.3-0.4 part of triethanolamine, 2-3 parts of diamond nanoparticle, 60-65 parts of clay, a proper amount of 4-6% hydrochloric acid, a proper amount of water and 15-20 parts of aids. According to the packing, due to addition of diamond nanoparticles, the wear resistance of the film is improved; due to addition of phosphite ester, the heat resistance of the film is improved; due to use of clay, the cost is reduced; and moreover, due to use of the aids, the dispersity and reinforcing performance of the packing can be improved, and the strength and impact toughness of the film can be improved.

Description

technical field [0001] The invention belongs to the field of capacitor films, in particular to a special filler for heat-resistant and wear-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 and qua...

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