Modified polycarbonate material for processing of shell of capacitor of locomotive

Abstract

The invention relates to a modified polycarbonate material for processing of a shell of a capacitor of a locomotive. The modified polycarbonate material is prepared from the following raw materials in part by weight: 56 to 75 parts of polycarbonate, 15 to 25 parts of acrylonitrile-butadiene-styrene (ABS) resin, 2 to 4 parts of ABS-g-maleic anhydride (MAH) compatilizer, 3 to 8 parts of toughening agent methyl methacrylate-butadiene-styrene (MBS), 3 to 4 parts of flame-retardant potassium perfluorobutanesulfonate (PPFBS), 3 to 4 parts of organosilicon flame retardant, 0.1 to 0.5 part of epoxy resin, 0.1 to 0.3 part of composite antioxidant B225 and 2 to 5 parts of light calcium carbonate powder. The shell of the capacitor of the locomotive which is processed by using the material has the characteristics of light weight, difficulty in deformation and high dielectric strength, and cost is low.

Description

technical field [0001] The invention relates to the field of engineering plastics, in particular to a modified polycarbonate material for processing motorcycle capacitor casings. Background technique [0002] Capacitors currently used in power locomotives are usually made of stainless steel or ABS engineering plastics. The former shell is bulky, and the cost is high, easy to rust, and it is very easy to cause shell breakdown and fire phenomenon, which is gradually being replaced by ABS material. Although the ABS material shell is light in weight, the wall thickness of the shell made of this material must be more than 5cm. Otherwise, the deformation resistance temperature is low and it is easy to deform. However, when the wall is too thick, the processing difficulty increases, and the production waste Many, the pass rate is low, and the production cost is increased. At the same time, the ABS material is easy to absorb water, resulting in a decrease in the insulation performa...

AI Technical Summary

Problems solved by technology

The former shell is bulky, and the cost is high, easy to rust, and it is easy to cause shell breakdown and fire phenomenon, which is gradually being replaced by ABS material

Although the ABS material shell is light in weight, the wall thickness of the shell made of this material must be more than 5cm. Otherwise, the deformation resistance temperature is low and it is easy to deform. However, when the wall is too thick, the processing difficulty increases, and the production waste Many, the pass rate is low, which increases the production cost. At the same time, the ABS material is easy to absorb water, resulting in a decrease in the insulation performance of the capacitor shell and a decrease in the dielectric strength.