Modified polycarbonate material for producing locomotive capacitor shell

Abstract

The invention relates to a modified polycarbonate material for producing a locomotive capacitor shell. The modified polycarbonate material for producing the locomotive capacitor shell comprises 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 acrylonitrile butadiene styrene-g-maleic anhydride (ABS-g-MAH) compatilizer, 3 to 8 parts of toughening agent methyl methacrylate-butadiene-styrene (MBS), 5 to 7 parts of flame retardant beclomethasone (BDP), 0.1 to 0.5 part of epoxy resin and 0.1 to 0.3 part of composite antioxidant B215. The locomotive capacitor shell processed by using the material has the characteristics of light weight, insusceptibility to deformation and high dielectric strength and is low in cost.

Description

technical field [0001] The invention relates to the field of engineering plastics, in particular to a modified polycarbonate material for producing locomotive capacitor casings. Background technique [0002] Capacitors currently used on 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 performan...

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.