CN102532847B - Modified polycarbonate material for processing locomotive capacitor shell - Google Patents

Abstract

The invention discloses a modified polycarbonate material for processing a locomotive capacitor shell. The modified polycarbonate material consists of the following raw materials in parts by weight: 56-75 parts of polycarbonate, 15-25 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 2-4 parts of an ABS-g-MAH (Acrylonitrile Butadiene Styrene-g-Maleic Anhydride) compatilizer, 3-8 parts of a toughening agent MBS (Methyl Methacrylate Butadiene Styrene), 3-4 parts of 2-carboxyethylphosphinicacid, 3-4 parts of an organic silicon flame retardant, 0.1-0.5 part of epoxy resin and 0.1-0.3 part of a composite antioxidant B225. The locomotive capacitor shell processed with the method has the characteristics of light weight, low cost, difficulty in deforming and high antistatic strength.

Description

The poly-carbon ester material of modification of processing locomotive capacitor shell

Technical field

The present invention relates to engineering plastics field, be specifically related to a kind of poly-carbon ester material of modification of processing locomotive capacitor shell.

Background technology

For the electrical condenser on power vehicle, its shell shell adopts stainless steel or ABS engineering plastics to make conventionally at present.The former housing is heavy, and cost is high, easily gets rusty, and very easily produces again housing and punctures and draw fiery phenomenon, is substituted just gradually by ABS material.And although ABS material housing is lightweight, but the wall thickness of the housing that this material is made must be more than 5cm, and no side resistance to deformation temperature is low, yielding, when but wall is too thick, difficulty of processing increases, and during production, waste product is many, and qualification rate is low, increased production cost, ABS material easily absorbs water simultaneously, causes capacitor casing insulating property to reduce, and dielectric strength declines.

Summary of the invention

In order to overcome above-mentioned deficiency, the invention provides a kind of poly-carbon ester material of modification of processing locomotive capacitor shell, adopt the poly-injection molded locomotive capacitor shell of carbon ester material of this modification to there is good processability, the not yielding and large feature of dielectric strength.

The technical solution used in the present invention is as follows for achieving the above object:

The poly-carbon ester material of modification of processing locomotive capacitor shell, is characterized in that: the weight part of its constitutive material is as follows:

Polycarbonate 56-75 part, ABS resin 15-25 part, ABS-g-MAH compatilizer 2-4 part, toughner MBS 3-8 part, 2-carboxyethyl phenyl phosphinic acid acid 3-4 part, organic silicon fibre retardant 3-4, epoxy resin 0.1-0.5 part, composite antioxidant B225 0.1-0.3 part, titanium dioxide 1-2 part.

The poly-carbon ester material of modification of described processing locomotive capacitor shell, is characterized in that: the weight part of its constitutive material is as follows:

70 parts of polycarbonate, 22 parts of ABS resin, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 3 parts of 2-carboxyethyl phenyl phosphinic acid acid, organic silicon fibre retardant 4,0.4 part of epoxy resin, 0.3 part of composite antioxidant B225, titanium dioxide 1-2 part.

The preparation method of the poly-carbon ester material of modification of described processing locomotive capacitor shell, is characterized in that, specifically comprises the following steps:

(1) take respectively each starting material;

(2) starting material that take are mixed according to formula rate;

(3) compound is put in drying machine and is dried, drying temperature is 75-85 ℃, and be 4-6 hour time of drying;

(4) dried batch mixing is dropped into twin screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is 210-270 ℃.

Beneficial effect of the present invention:

Modification of the present invention gathers carbon ester material, has the dual characteristics that has poly-carbon ester material and ABS material concurrently, adopts the poly-injection molded locomotive capacitor shell of carbon ester material of this modification to have good processability, the not yielding and large feature of dielectric strength.

Embodiment

The poly-carbon ester material of modification of locomotive capacitor shell, the weight part of its constitutive material is as follows:

70 parts of polycarbonate, 22 parts of ABS resin, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 3 parts of 2-carboxyethyl phenyl phosphinic acid acid, organic silicon fibre retardant 4,0.4 part of epoxy resin, 0.3 part of composite antioxidant B225, titanium dioxide 1-2 part.

The preparation method who produces the poly-carbon ester material of modification of locomotive capacitor shell, specifically comprises the following steps:

(1) take respectively each starting material;

(2) starting material that take are mixed according to formula rate;

(3) compound is put in drying machine and is dried, drying temperature is 80 ℃, and be 8 hours time of drying;

(4) dried batch mixing is dropped into twin screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is 210-270 ℃.

Experimental data

The poly-carbon ester material of modification of the present invention and ABS properties of materials contrast as following table:

Performance	Modified polycarbonate of the present invention	ABS
			Tensile strength	70-75mPa	40-55mPa
Bending strength	100-125mPa	30-65mPa
			Notch shock toughness	70-85KJ/m 2	15-35KJ/m 2
Water-intake rate	0.5-0.6%	1.1%
			Heat-drawn wire	135-150	95
Second-order transition temperature	149	110
			Embrittlement temperature	-100-130	-25

As can be seen from the above table, the tensile strength of modified polycarbonate, bending strength, notch shock toughness are all obviously better than ABS material, and heat-drawn wire and second-order transition temperature are higher than ABS material, and water-intake rate is lower than ABS material.

Therefore the capacitor casing intensity becoming with modified polycarbonate materials processing of the present invention is good, be ABS material housing 2-3 times, not yielding, dielectric strength is large, operable temperature range is wide, and good processability, good stability of the dimension, not contracting wall phenomenon, the wall thickness processing of housing is unaffected, the wall thickness that can increase on demand housing has case weight light simultaneously, the feature that cost is low.

Claims (1)

1. the modification of processing locomotive capacitor shell gathers carbon ester material, it is characterized in that: the weight part of its constitutive material is as follows:

70 parts of polycarbonate, 22 parts of ABS resin, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 3 parts of 2-carboxyethyl phenyl phosphinic acids, 4 parts of organic silicon fibre retardants, 0.4 part of epoxy resin, 0.3 part of composite antioxidant B225, titanium dioxide 1-2 part;

Its preparation method, specifically comprises the following steps:

(1) take respectively each starting material;

(2) starting material that take are mixed according to formula rate;

(3) compound is put in drying machine and is dried, drying temperature is 80 ℃, and be 8 hours time of drying;

(4) dried batch mixing is dropped into twin screw extruder, extruding pelletization, the barrel zone temperature of forcing machine is 210-270 ℃.