CN102399428A - Modified polycarbonate material for producing locomotive capacitor shell - Google Patents

Abstract

The invention relates to a modified polycarbonate material for producing a locomotive capacitor shell. The modified polycarbonate material consists of 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-MAH compatilizer, 3 to 8 parts of toughening agent MBS, 5 to 7 parts of flame retardant KSS, 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, low cost, difficulty in deformation and high dielectric strength.

Description

The modification of producing the locomotive capacitor casing gathers the carbon ester material

Technical field

The present invention relates to the engineering plastics field, the modification that is specifically related to produce the locomotive capacitor casing gathers the carbon ester material.

Background technology

Be used for the electrical condenser on the power vehicle at present, its shell shell adopts stainless steel or ABS engineering plastics to process usually.The former housing is heavy, and cost is high, is prone to get rusty, and very easily produces the housing puncture again and draws fiery phenomenon, is substituted by the ABS material just gradually.Though and the ABS material housing is in light weight, the wall thickness of the housing that this material is processed must be more than 5cm, and side resistance to deformation temperature is not low; Yielding, but when wall was too thick, difficulty of processing increased; Waste product is many during production, and qualification rate is low, has increased production cost; The ABS material is prone to suction simultaneously, causes the capacitor casing insulating property to reduce, and dielectric strength descends.

Summary of the invention

In order to overcome above-mentioned deficiency, the invention provides the modification of producing the locomotive capacitor casing and gather the carbon ester material, adopt this modification to gather the injection molded locomotive capacitor casing of carbon ester material and have good processability, the not yielding and big characteristics of dielectric strength.

The technical scheme that adopts for the present invention of realization above-mentioned purpose is following:

The modification of producing the locomotive capacitor casing gathers the carbon ester material, and it is characterized in that: the weight part of its constitutive material is following:

Polycarbonate 56-75 part, ABS resin 15-25 part, ABS-g-MAH compatilizer 2-4 part, toughner MBS3-8 part, fire retardant KSS 5-7 part, epoxy resin 0.1-0.5 part, composite antioxidant B215 0.1-0.3 part.

The modification of described production locomotive capacitor casing gathers the carbon ester material, it is characterized in that: the weight part of its constitutive material is following:

70 parts of polycarbonate, 22 parts of ABS resins, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 6 parts of fire retardant KSS, 0.4 part of epoxy resin, 0.3 part of composite antioxidant B215.

The modification of described production locomotive capacitor casing gathers the preparation method of carbon ester material, it is characterized in that, specifically may further comprise the steps:

(1) takes by weighing each starting material respectively;

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

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

(4) drying is good batch mixing drops into twin screw extruder, and extruding pelletization, the barrel zone temperature of forcing machine are 210-270 ℃.

Beneficial effect of the present invention:

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

Embodiment

The modification of producing the locomotive capacitor casing gathers the carbon ester material, and the weight part of its constitutive material is following:

70 parts of polycarbonate, 22 parts of ABS resins, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 6 parts of fire retardant KSS, 0.4 part of epoxy resin, 0.3 part of composite antioxidant B215.

The modification of producing the locomotive capacitor casing gathers the preparation method of carbon ester material, specifically may further comprise the steps:

(1) takes by weighing each starting material respectively;

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

(3) compound is put into carried out drying in the drying machine, drying temperature is 80 ℃, and be 5 hours time of drying;

(4) drying is good batch mixing drops into twin screw extruder, and extruding pelletization, the barrel zone temperature of forcing machine are 210-270 ℃.

Experimental data

Modification of the present invention gathers the carbon ester material and the ABS properties of materials contrasts like following table:

Performance	Modified polycarbonate of the present invention	ABS
			Tensile strength	72-76mPa	40-55mPa
Bending strength	98-120mPa	30-65mPa
			The notch shock toughness	70-80KJ/m 2	15-35KJ/m 2
Water-intake rate	0.4-0.5％	1.0％
			Heat-drawn wire	135-151	95
Second-order transition temperature	150	110
			Embrittlement temperature	-100-135	-25

Can be found out that by last table the tensile strength of modified polycarbonate, bending strength, notch shock toughness all obviously are superior to the ABS material, heat-drawn wire and second-order transition temperature are higher than the ABS material, and water-intake rate is lower than the ABS material.

Therefore the capacitor casing intensity that becomes with modified polycarbonate materials processed of the present invention is good, is ABS material housing 2-3 times, and is not yielding; Dielectric strength is big, and operable TR is wide, and good processability; Dimensional stability is good, the wall phenomenon that do not contract, and the wall thickness processing of housing is unaffected; Can increase the wall thickness of housing on demand, it is light to have case weight simultaneously, the characteristics that cost is low.

Claims (3)

1. the modification of producing the locomotive capacitor casing gathers the carbon ester material, and it is characterized in that: the weight part of its constitutive material is following:

Polycarbonate 56-75 part, ABS resin 15-25 part, ABS-g-MAH compatilizer 2-4 part, toughner MBS 3-8 part, fire retardant KSS 5-7 part, epoxy resin 0.1-0.5 part, composite antioxidant B215 0.1-0.3 part.

2. the modification of production locomotive capacitor casing according to claim 1 gathers the carbon ester material, it is characterized in that: the weight part of its constitutive material is following:

70 parts of polycarbonate, 22 parts of ABS resins, 3 parts of ABS-g-MAH compatilizers, 5 parts of toughner MBS, 6 parts of fire retardant KSS, 0.4 part of epoxy resin, 0.3 part of composite antioxidant B215.

3. the modification of production locomotive capacitor casing as claimed in claim 1 gathers the preparation method of carbon ester material, it is characterized in that, specifically may further comprise the steps:

(1) takes by weighing each starting material respectively;

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

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

(4) drying is good batch mixing drops into twin screw extruder, and extruding pelletization, the barrel zone temperature of forcing machine are 210-270 ℃.