CN103772953A - Impact-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) alloy and preparation method thereof - Google Patents

Abstract

The invention belongs to the field of polymer composites and discloses an impact-resistant PC/ABS (Polycarbonate/Acrylonitrile Butadiene Styrene) alloy and a preparation method thereof. The impact-resistant PC/ABS alloy is prepared from the following components in parts by weight: 60-70 parts of PC, 20-30 parts of glass fiber, 30-35 parts of ABS, 5-10 parts of low-density polyethylene, 5-10 parts of paraffin, 12-27 parts of compatilizer and 2-5 parts of tris(2,4-ditert-butylphenyl) phosphite. The preparation method comprises the steps of mixing the components at a high speed, then, feeding the mixture into a twin-screw extruder, extruding and granulating to obtain the impact-resistant PC/ABS alloy. Various properties such as mechanical properties, heat resistance, weather resistance, impact resistance, crack resistance and the like of the alloy material prepared by the invention are improved.

Description

A kind of shock resistance PC/ABS Alloy And Preparation Method

Technical field

The invention belongs to polymeric material field, relate in particular to a kind of shock resistance PC/ABS Alloy And Preparation Method.

Background technology

Polycarbonate has excellent mechanical property, resistance toheat and weather resistance etc., is widely used engineering plastics, simultaneously because polycarbonate is crisp, and not shock-resistant and cracking, thereby limited it in the application such as on automobile, daily necessities.

Shock-resistant and the splitting resistance of existing raising polycarbonate, main by improving rubber content, thereby improve shock resistance and the splitting resistance of matrix material, but this method can cause the thermotolerance of material to decline, there is investigator by adding ABS resin to solve the problem that material thermal resistance declines, but due to the consistency existing problems between ABS resin and carbonic ether, easily exist binding deficient to cause the mechanical property of material to reduce.

Summary of the invention

The object of the invention is to provide a kind of shock resistance PC/ABS Alloy And Preparation Method, and the performance that makes the each side such as mechanical property, resistance toheat, weather resistance, impact and the splitting resistance of alloy material is all improved.

Object of the present invention can be achieved through the following technical solutions:

A kind of shock resistance PC/ABS alloy, mainly made by the component that comprises following weight part:

PC 60-70 part,

Glass fibre 20-30 part,

ABS 30-35 part,

Low Density Polyethylene 5-10 part,

Paraffin 5-10 part,

Compatilizer 12-27 part,

Three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 2-5 part.

Described compatilizer is the mixture of atactic styrene-maleic anhydride copolymer and ABS graft polypropylene.

In described compatilizer, the mass ratio of atactic styrene-maleic anhydride copolymer and ABS graft polypropylene is 2:1.

A preparation method for shock resistance PC/ABS alloy, the method comprises the following steps:

(1) take PC60-70 part, glass fibre 20-30 part, ABS30-35 part, Low Density Polyethylene 5-10 part, paraffin 5-10 part, compatilizer 12-27 part and three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 2-5 part;

(2) by above-mentioned raw materials after high-speed mixing, send in twin screw extruder, extrude, granulation;

Each section of extruder temperature of described twin screw extruder is 200-260 ℃.

Described in step (2), the stir speed (S.S.) of high-speed mixing is 1000rpm, and churning time is 20 minutes.

Beneficial effect:

The present invention adopts the fiber reinforcement system of PC and glass fibre, and ABS resin and Low Density Polyethylene are added for shock resistance breach ability in solution system, problem the present invention that toughness is low, increase toughness and the thermotolerance problem of whole system, and added the mixture of atactic styrene-maleic anhydride copolymer and ABS graft polypropylene as compatilizer, increase the amalgamation problem of each material in whole system.

Embodiment

Below in conjunction with embodiment, the present invention is further illustrated.

Embodiment 1

(1) take PC60kg, glass fibre 30 kg, ABS30kg, Low Density Polyethylene 5kg, paraffin 5kg, atactic styrene-maleic anhydride copolymer 8 kg, ABS graft polypropylene 4 kg and three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 2kg;

(2) by above-mentioned raw materials after high-speed mixing, send in twin screw extruder, extrude, granulation;

The temperature in the each district of screw rod is: the first 200 ℃, district, 210 ℃ of Second Regions, 240 ℃, San district, 260 ℃, Si district.

Described in step (2), the stir speed (S.S.) of high-speed mixing is 1000rpm, and churning time is 20 minutes.

The performance test results that makes material is as shown in table 1.

Embodiment 2

(1) take PC70kg, glass fibre 20kg, ABS35 kg, Low Density Polyethylene 8kg, paraffin 10 kg, atactic styrene-maleic anhydride copolymer 18 kg, ABS graft polypropylene 9 kg and three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 5 kg;

(2) by above-mentioned raw materials after high-speed mixing, send in twin screw extruder, extrude, granulation;

The temperature in the each district of screw rod is: the first 200 ℃, district, 230 ℃ of Second Regions, 250 ℃, San district, 260 ℃, Si district.

Described in step (2), the stir speed (S.S.) of high-speed mixing is 1000rpm, and churning time is 20 minutes.

The performance test results that makes material is as shown in table 1.

Embodiment 3

(1) take PC65kg, glass fibre 25kg, ABS30 kg, Low Density Polyethylene 10 kg, paraffin 8kg, atactic styrene-maleic anhydride copolymer 8kg, ABS graft polypropylene 4 kg and three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 4kg;

(2) by above-mentioned raw materials after high-speed mixing, send in twin screw extruder, extrude, granulation;

The temperature in the each district of screw rod is: the first 200 ℃, district, 220 ℃ of Second Regions, 240 ℃, San district, 260 ℃, Si district.

Described in step (2), the stir speed (S.S.) of high-speed mixing is 1000rpm, and churning time is 20 minutes.

The performance test results that makes material is as shown in table 1.

 

Table 1

Claims (5)

1. a shock resistance PC/ABS alloy, is characterized in that, is mainly made up of the component that comprises following weight part:

PC 60-70 part,

Glass fibre 20-30 part,

ABS 30-35 part,

Low Density Polyethylene 5-10 part,

Paraffin 5-10 part,

Compatilizer 12-27 part,

Three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 2-5 part.

2. shock resistance PC/ABS alloy according to claim 1, is characterized in that, described compatilizer is the mixture of atactic styrene-maleic anhydride copolymer and ABS graft polypropylene.

3. shock resistance PC/ABS alloy according to claim 2, is characterized in that, in described compatilizer, the mass ratio of atactic styrene-maleic anhydride copolymer and ABS graft polypropylene is 2:1.

4. a preparation method for shock resistance PC/ABS alloy, is characterized in that, the method comprises the following steps:

(1) take PC60-70 part, glass fibre 20-30 part, ABS30-35 part, Low Density Polyethylene 5-10 part, paraffin 5-10 part, compatilizer 12-27 part and three (2.4-di-tert-butyl-phenyl) phosphorous acid ester 2-5 part;

(2) by above-mentioned raw materials after high-speed mixing, send in twin screw extruder, extrude, granulation;

Each section of extruder temperature of described twin screw extruder is 200-260 ℃.

5. the preparation method of shock resistance PC/ABS alloy according to claim 4, is characterized in that, described in step (2), the stir speed (S.S.) of high-speed mixing is 1000rpm, and churning time is 20 minutes.