A kind of special filler for antibacterial flame retardant capacitor film and preparation method thereof

Abstract

The invention provides special filler for an antibacterial and flame-retardant capacitor film. The special filler is prepared from the following raw materials in parts by weight: 5-8 parts of butadiene styrene rubber, 1.1-1.4 parts of tetrabutyl titanate, 0.4-0.7 part of sodium citrate, 4-6 parts of zinc borate, 3-4 parts of magnesium hydroxide, 2-3 parts of nanometer bentonite, 0.8-1 part of copper sulfate, 2-3 parts of sulfur powder, 4-6 parts of celestite powder, 1.5-1.7 parts of zinc stearate, 60-65 parts of clay, a proper amount of 4-6% hydrochloric acid, a proper amount of water and 15-20 parts of adjuvant. According to the invention, due to the addition of copper sulfate and sulfur powder, the antibacterial and preservative effects of the filler are good; due to the addition of tetrabutyl titanate, the high temperature resistance of the film is improved; due to the addition of zinc borate and magnesium hydroxide, the flame retardance of the film is improved; due to the addition of nanometer bentonite and celestite powder, the strength and size stability of the film are improved; due to the addition of clay, the cost is reduced; and due to the addition of adjuvant, the dispersibility and reinforcing property of the filler 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 antibacterial and flame-retardant 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