Capacitor thin film containing modified sepiolite powder and preparation method thereof

Abstract

The invention discloses a capacitor thin film containing modified sepiolite powder and a preparation method thereof. The capacitor thin film containing modified sepiolite powder comprises the following raw materials in parts by weight: 40-45 of metallocene polypropylene resin, 35-40 of LDPE (Linear low density polyethylene), 10-15 of homo-polypropylene, 3-5 of epoxy linseed oil, 2-3 of polyvinyl alcohol, 1-2 of aluminum hydroxide, 1-2 of polyisobutylene, 8-12 of diatomite, 1-2 of ferrocene, 2.2-2.5 of poly-4-methyl-1-amylene, 7.5-9.5 of modified sepiolite powder, 3.5-5 of zeolite, 1.2-1.5 of antioxidant DSTP, 0.9-1.1 of acetylcitric acid tris(2-ethylhexyl) ester, 0.8-1.2 of di-n-butyl maleate, 3-5 of calcium stearate, 2.5-3 of N-(beta-aminoethyl)-gamma-aminopropyl trimethoxysilane (triethoxysilane), and 0.5-0.7 of modified trees ash. The preparation method disclosed by the invention is simple; and simultaneously, the diatomite, the modified nano-titanium dioxide and the modified trees ash are added to the raw materials so that the barrier property and air tightness of the thin film are improved, and the thin film has good resistance to pressure and impact resistance and simultaneously has the characteristics of high heat-seal strength and good heat sealing property.

Description

technical field [0001] The invention relates to a capacitor film material, in particular to a capacitor film containing modified sepiolite powder and a preparation method thereof. Background technique [0002] Film capacitors use metal foil as an electrode, which is stacked with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and wound into a cylindrical capacitor; in all Among the plastic film capacitors, the characteristics of polypropylene (PP) capacitors and polystyrene (PS) capacitors are the most significant. Of course, the price of these two capacitors is also relatively high. The quality of the capacitor film directly affects the service life and product performance of the capacitor. The demand for films is large and there are many types. It is difficult to meet the requirements of the market by using a single raw material to produce films, but each raw material has its shortcomings, so the produced films are difficult ...

AI Technical Summary

Problems solved by technology

[0002] Film capacitors use metal foil as an electrode, which is stacked with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends, and wound into a cylindrical capacitor; in all Among the plastic film capacitors, the characteristics of polypropylene (PP) capacitors and polystyrene (PS) capacitors are the most significant. Of course, the price of these two capacitors is also relatively high. The quality of the capacitor film directly affects the service life and product performance of the capacitor. The demand for films is large and there are many types. It is difficult to meet the requirements of the market by using a single raw material to produce films, but each raw material has its own shortcomings, so the produced films are difficult to meet the needs of various situations