CN108264746A

CN108264746A - A kind of high tenacity PC/ABS compositions and preparation method thereof

Info

Publication number: CN108264746A
Application number: CN201611266429.0A
Authority: CN
Inventors: 刘强; 胡纯惠; 吉顺宏
Original assignee: Shanghai English Ji Electronics Plastic Cement Co Ltd
Current assignee: Shanghai English Ji Electronics Plastic Cement Co Ltd
Priority date: 2016-12-31
Filing date: 2016-12-31
Publication date: 2018-07-10

Abstract

The present invention relates to a kind of high tenacity PC/ABS compositions and preparation method thereof, including following raw material by weight percentage：Polycarbonate 50% 90%;ABS resin 5% 45%;Toughener 1% 5%;Compatilizer 0.5% 3%;Black sand 0.5% 1%;Processing aid 0.5% 3%;By the big torsion physical property measurement of the high intensity of product of the present invention, game machine shaft base is without cracking phenomena after test.

Description

A kind of high tenacity PC/ABS compositions and preparation method thereof

Technical field

The invention belongs to functional high molecule material physical modification technical field, and in particular to a kind of high intensity, high tenacity PC/ABS alloy materials.Suitable for can torsion operation greatly injection structure part, such as steering wheel for game console, rocking bar, pedestal.

Background technology

With constantly bringing forth new ideas for product, the new design theory of product also continues to bring out, people for moulding intensity, The performances such as rigidity, toughness also proposed higher requirement, some alloy materials can reduce under the premise of respective performances are reached Cost and the technique for meeting injection molding promote production yield and efficiency, so the research of such material also increasingly receives The concern and attention of people.However the performance of some materials be under certain condition it is conflicting, such as the big material of rigidity its Toughness will be relatively low.The PC/ABS alloy materials used at present after injection molding steering wheel for game console, are doing the big torsion of high intensity During physical property measurement under state, it is found that steering wheel shaft pedestal has cracking phenomena.Effectively cause the worry of client.

Invention content

The purpose of the present invention is overcoming above-mentioned existing deficiency, improve the physical property measurement after the injection of PC/ABS alloy materials and open Split problem.

The technical solution that the present invention takes is：

A kind of high tenacity PC/ABS compositions, including following raw material by weight percentage：

Polycarbonate 50%-90%;

ABS resin 5%-45%;

Toughener 1%-5%;

Compatilizer 0.5%-3%;

Black sand 0.5%-1%;

Processing aid 0.5% -3%;

The PC resin is bisphenol A polycarbonate, and molecular weight is in 10000-40000g/mol, makrolon of the invention It is known and can be obtained by a variety of commercial channel；

The ABS resin includes acrylonitrile-butadiene-phenylethylene graft copolymer, acrylonitrile-ethylene propylene copolymers-benzene One kind or mixing in grafted ethylene copolymer；

The toughener is one in butadiene type copolymer, methacrylate/butadiene/styrene copolymers (MBS) Kind or mixing；

The compatilizer is styrene-N- phenyl maleic acids imines-copolymer-maleic anhydride (SMI)；

The black sand selects the different trades mark and additive amount according to performance requirements such as blackness and mechanics；

The processing aid includes dispersed lubricant, brightener, White Mineral Oil, glycerine etc., and addition auxiliary agent can be in injection molding process The middle dispersibility for improving each component reduces friction, helps to demould.

The present invention provides a kind of high tenacity PC/ABS compositions and preparation method thereof, pass through reasonable selection auxiliary agent and items Raw material proportioning under the premise of material notch impact strength is maintained substantially, promotes bending, the tensile property of material, so as to improve The toughness of material improves the big torsion physical property measurement problem of Cracking of product high intensity.

Specific embodiment

With reference to specific embodiment, the present invention is further explained.These embodiments be merely to illustrate the present invention rather than It limits the scope of the invention.The embodiment of the present invention is raw materials used：

Polycarbonate：Bisphenol A polycarbonate, SABIC PC141R, melt flow rate (MFR) 12g/10min（300℃/ 1.2Kg）.

ABS：State Qiao ABS D-150, melt flow rate (MFR) 2.3g/10min（200℃/5Kg）.

Toughener：Methacrylate/butadiene/styrene copolymers (MBS), Xing Tony Da chemical industry ST4802.

Compatilizer：Styrene-N- phenyl maleic acids imines-copolymer-maleic anhydride (SMI), Xing Tony Da chemical industry, E920.

Black sand：It is commercially available.

Processing aid：The compounding of dispersed lubricant and White Mineral Oil etc., it is commercially available.

PC, ABS, MBS, SMI, black sand and processing aid are separately dried, are uniformly mixed in proportion through high speed blender Afterwards, through double screw extruder after, extruder temperature is exported from charge door to head, and temperature is controlled between 230 DEG C -260 DEG C, Rotating speed is 250-300 revs/min, fully melt it is compound after, through head extrusion, squeeze out material strip again after sink cools down, through pelletizing Machine-cut grain obtains example composition.Resulting composition 90 DEG C of dryings in hot-air oven are molded after 5 hours with injection moulding machine Into standard batten, then 240-250 DEG C of injection moulding machine temperature is measured after room stands 24 hours in constant temperature and is tested.It selects The embodiment of optimal proportion carries out the injection molding of corresponding mold, then the big torsion physical property measurement to defective product high intensity.

For specific proportioning see table 1, table 1 is proportioning embodiment；Testing standard is see table 2；Test result is shown in Table 3.

Above-mentioned is table 1；

Above-mentioned is table 2；

Above-mentioned is table 3.

According to the quantitative measurement of table 3 as a result, comparative example 1-5 can be seen that as ABS material adding proportion adds Greatly, notch impact strength is declined slightly, but is changed less, and bending and tensile strength increase.When ABS adding proportions are 30%（Embodiment 4）When material the performances such as notch shock, stretching, bending reach balance and the optimization taken into account.On this basis Be further added by ABS adding proportions increases the adding proportion of toughener simultaneously（Embodiment 5）, physical property measurement is the results show that variation is little.

With the composition injection molding product of embodiment 4, can be tested by the big torsion physical property measurement of high intensity of product Game machine shaft base is without cracking phenomena afterwards, so as to solve the problems, such as worry of the client to this.

Claims

1. a kind of high tenacity PC/ABS compositions, including following raw material by weight percentage：

Polycarbonate 50%-90%;

ABS resin 5%-45%;

Toughener 1%-5%;

Compatilizer 0.5%-3%;

Black sand 0.5%-1%;

Processing aid 0.5% -3%;

The PC resin is bisphenol A polycarbonate, and molecular weight is in 10000-40000g/mol；

The processing aid includes dispersed lubricant, brightener, White Mineral Oil or glycerine.

2. a kind of preparation method of high tenacity PC/ABS compositions is by PC, ABS, MBS, SMI, black sand and processing aid point Not Gan Zao, in proportion through high speed blender after mixing, and after through double screw extruder, extruder temperature is from charge door to machine Head outlet, temperature control between 230 DEG C -260 DEG C, rotating speed be 250-300 revs/min, fully melt it is compound after, squeezed through head Go out, after sink cools down, example composition is obtained through pelleter pelletizing again for extrusion material strip；

Resulting composition is molded into standard batten, injection molding after 90 DEG C of dryings 5 hours in hot-air oven with injection moulding machine Then 240-250 DEG C of machine temperature is measured after room stands 24 hours in constant temperature and is tested.