Sealing rubber for supercapacitor

Abstract

The invention discloses a sealing rubber for a supercapacitor. The sealing rubber is prepared from the raw materials in parts by weight: 70-100 parts of hydrogenated styrene-butadiene-styrene block copolymer, 15-30 parts of cyanosilicone rubber, 4-14 parts of polyetheretherketone, 30-50 parts of epoxypropane grated nanocellulose, 5-12 parts of precipitated barium sulphate, 2-6 parts of glass fibers, 2-8 parts of carbon nanotubes, 1-2.8 parts of stearic acid, 0.5-1.2 parts of chlorinated paraffin, 0.5-1.2 parts of disproportionated rosin, 0.5-1.2 parts of white oil, 1-2 parts of tert-butyl hydroperoxide, 0.4-1 part of dibenzoyl peroxide, 0.2-1 part of lubricant, 0.2-1 part of dispersant and 0.2-1 part of anti-aging agent. The sealing rubber for the supercapacitor, provided by the invention,is not only low in cost, but also high in mutual dispersion degree, good in mechanical property after being cured, balanced in toughness and hardness, high in loading capacity and extremely good in resilience.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a sealing rubber for super capacitors. Background technique [0002] Supercapacitor is a new type of energy storage device, which has the advantages of good high-power charging and discharging performance, high energy conversion efficiency, good temperature characteristics, long cycle life and environmental protection, so its technology has been widely valued by countries all over the world. [0003] The seal of the supercapacitor has a great influence on the performance of the supercapacitor. If the seal is not good, the internal electrolyte will be in direct contact with the outside air, which will cause the deterioration and salinization of the electrolyte, which will seriously reduce the conductivity of the electrolyte. , the sealing structure of the conventional large-capacity supercapacitor adopts a rubber seal, and the contact part between the rubber seal and the upper ...

AI Technical Summary

Problems solved by technology

[0003] The seal of the supercapacitor has a great influence on the performance of the supercapacitor. If the seal is not good, the internal electrolyte will be in direct contact with the outside air, which will cause the deterioration and salinization of the electrolyte, which will seriously reduce the conductivity of the electrolyte. , the sealing structure of the conventional large-capacity supercapacitor adopts a rubber seal, and the contact part between the rubber seal and the upper edge of the shell tends to lose its original elasticity under long-term pressure, and it is easy to cause the electrolyte to leak out, resulting in the failure of the capacitor and Necessary losses such as corrosion of external parts