Manufacturing method of high-temperature-resistant flame-retardant environment-friendly capacitor shell

Abstract

The invention relates to a manufacturing method of a high-temperature-resistant flame-retardant environment-friendly capacitor shell, belonging to the field of manufacturing of capacitor shells. The method comprises the following steps: adding modified waste plastic shell powder, a silicone master batch, polyglycollic acid, mica powder, vapor-phase silicon dioxide, modified active magnesium hydroxide, tri(2-chloropropyl)phosphate, nano calcium carbonate, isocyanate, iron stearate, glass fiber, cellulose ether, calcium hydroxide and polyether into polypropylene, and carrying out injection molding. The modified waste plastic shell powder is prepared by the following steps: carrying out crushing activation on waste plastic shells, linear polyethylene, polylactic acid, amide stearate, polyethylene wax, a titanate coupling agent, talcum powder, potassium hydroxide and liquid paraffin by a ball mill three times, and curing to obtain the modified waste plastic shell powder. The capacitor shell has the advantages of favorable mechanical properties and high temperature resistance. The heat-deformation temperature is 168 DEG C, and the flame retardancy is Grade UL94-V0. The capacitor shell can be degraded, solves the problem of abundant waste plastic shells and other solid wastes, and implements energy saving and environment friendliness on the premise of controlling the cost.

Description

technical field [0001] The invention relates to a method for manufacturing a capacitor shell, in particular to a method for manufacturing a high-temperature-resistant, flame-retardant, and environment-friendly capacitor shell. Background technique [0002] At present, with the rapid development of the electronics industry, the demand for high-level, low-price electronic products is becoming more and more urgent. , with the rapid development of the electronics industry, it is adjusting its product structure and accelerating product upgrading to meet the increasingly high new requirements of the electronics industry. [0003] There are generally two types of shells in traditional capacitors: plastic shells and metal shells. Most of the plastic shells are made of ABS plastic through injection molding machines. However, the capacitor shell made of ABS plastic has poor heat resistance and will deform at about 100~108°C, so it cannot be used in high-power capacitors or high-tempe...

AI Technical Summary

Problems solved by technology

However, the capacitor shell made of ABS plastic has poor heat resistance and will deform at about 100~108°C, so it cannot be used in high-power capacitors or high-temperature-resistant capacitors; its flame-retardant performance is generally at the UL94-HB level, and its flame-retardant performance poorer, less secure

In the production of capacitor shells, there will be a large amount of leftover materials, residual plastic shell products, scrapped plastic shells due to large product size errors and serious damage, and a large number of waste shells due to the scrapping of capacitors after long-term use. These wastes are due to Non-degradable, easy to generate a large amount of solid waste, great damage to the environment, and virtually increase the cost of production or use

In the process of production and processing, the capacitor case made of ABS plastic is difficult to heat and form again after curing and molding. After mechanical activation treatment, it is used in the production of capacitor case for the second time. The plasticity is poor, and the mechanical properties are very poor. Powder, generally only processed into bricks and boards with relatively simple shapes