Excellent PC/ABS alloys of a kind of heat aging performance and preparation method thereof
Technical field
The present invention relates to polymeric material field, specifically, be a kind of excellent PC/ABS alloys of heat aging performance and
Its preparation method.
Background technology
Merlon/styrene-butadiene-acrylonitrile (PC/ABS) has excellent mechanical property, heat resistance etc., is
Widely used engineering plastics.In the basic conditions, PC can accelerate to degrade.
Chinese patent literature CN106046741A discloses a kind of high wet-heat resisting PC/ABS compositionss, by including following weight
The raw material of number is made:Merlon 30-85 parts, the step material 15-70 parts of ABS- toughener one, moisture-proof thermit powder 0.1-3 parts.Wherein,
The described step material of ABS- toughener one is made up of the raw material including following parts by weight:ABS50-80 parts, toughener 20-50 parts.
The patent improves the wet-hot aging performance of PC/ABS using PEP-36.But, PEP-36 has under conditions of 85 DEG C of 85% humidity
Effect well.But, in the long term heat ageing performance of 100 degree of 1000h, do not explain.
Chinese patent literature CN104927337A discloses a kind of wet and heat ageing resistant, high PU foams bond strength PC/ABS material
Material, described PC/ABS materials are prepared from by following component and content:Merlon 60-80 parts, response type compatilizer 0.1-3
Part, ABS 10-30 parts, PU foam bonding agent 0.2-10 parts, acrylic graft-modified type siloxane toughener 0.1-20 parts, antioxygen
Agent 0.1-3 parts.70 DEG C of 95% humidity aged property that the patent improves PC/ABS using the compatilizer with ethylene oxide group
Energy.But, evaluation of the Acidity of Aikalinity to PC/ABS long term heat ageing performances is not considered in system.
The content of the invention
It is an object of the invention to prevent PC/ABS from easily degrading under alkaline environment, adding by faintly acid phosphate ester
Enter, make whole system in solutions of weak acidity, PC is blocked additionally by epoxy resin;Both are auxiliary with reaching most after use
Good using effect, it is to avoid xanthochromia and impact that PC/ABS occurs after long term thermal deposits experiment.Enable PC/ABS materials
Meet the requirement of the long-term 100 degree of 1000h heat ageings of automobile main frame maker.
A first aspect of the present invention, there is provided the excellent PC/ABS alloys of a kind of heat aging performance, by following component by as follows
Weight portion is constituted:
Wherein,
Described PC (Merlon) is the bisphenol A polycarbonate that weight average molecular weight is 17000~30000g/mol, its
Vitrification point is 145~150 DEG C.It is preferred that PC molecular weight is 23000g/mol.L-1225Y, Tao Shi are produced in optional Supreme Being people's chemical conversion
PC-201-10, Hunan petrochemical industry PC-1100, PC-1220, Cohan wound PC 2600, PC 2400, the PC- for preferably being created with Cohan
2600。
Described ABS (acrylonitrile-butadiene-styrene copolymer) resinoid is substance law ABS material.Weight average molecular weight
For 80000~150000g/mol.The content of its butadiene is not in that butadiene is not coated by SAN between 18~30%
Problem, significantly improves the heat aging performance of PC/ABS.Described ABS include account for gross weight weight percent content be 5~
30% rubber, 10~30% acrylonitrile, 40~70% styrene, can select Korea Gumho Petrochemical Co., Ltd.
ABS P/D150, ABS P/D190, ABS8391, ABS8434 of Gaoqiao Petrochemical Company and the GP-22 of benzene neck;It is preferred that the GP-22 of benzene neck.
Described epoxy resin is selected from Dow DER330, three well R-140 and South Asia epoxy NPES 907.It is preferred that epoxy content
For the Dow DER330 of 182~192g/eq.
Described phosphate ester is triphenyl phosphite, sodium dihydrogen phosphate and sodium dihydrogen phosphite.It is preferred that weakly acidic phosphorous
Triphenyl phosphate ester.
Described toughener be s-B-S (SBS), ABS high glue powders, polyurethane elastomer, ethylene-
Methylmethacrylate copolymer (EMA), ethylene-methyl methacrylate acrylate copolymer (EBA), polyolefin elastomer, nucleocapsid knot
The silicone rubber or MBS (MBS) of structure.It is preferred that MBS.
Preferably, the particle diameter of described toughener is 50~700nm, and glue content is 40wt%~90wt%, can select and produces
EXL-2620, EXL-2330 of M521, ROHM AND HAAS in EM500, Zhong Yuan of LG;Wherein EM500, M521, EXL-2620 are equal
For MBS (MBS), EXL-2330 belongs to methyl methacrylate/acrylic acid class
Polymer (ACR);It is preferred that the EXL-2620 of ROHM AND HAAS.
The antioxidant be phosphite antioxidant 168, phosphite antioxidant S-9228, hindered phenol antioxygen 1010,
One or two in hindered phenol antioxygen 1098, hindered phenol antioxygen 1076.The antioxidant of optional CIBA companies production
1098th, antioxidant 1010, antioxidant 1076 and irgasfos 168, the S-9228 of Dover companies.Preferably macromolecule phosphorous acid
The mixing of ester antioxidant S-9228 and hindered phenol antioxygen 1098.
Described lubricant is one or more in silicone powder, pentaerythritol ester (PETS), ethylene bis stearic amide.It is excellent
Select pentaerythritol ester.
A second aspect of the present invention, there is provided the preparation method of the excellent PC/ABS alloys of above-mentioned heat aging performance, including with
Lower step:
S1, according to weight preparation raw material, raw material mix homogeneously is made in input premixed device, and protect after being heated to 60 DEG C
Temperature 15 minutes, obtains premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 15-35rpm, and barrel temperature is 220-270 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Prior art adopts emulsion method ABS material as the PC/ABS of raw material, and after 100 degree of 1000h, yellowness index reaches
6, impact property reduces by 60%.And the addition that the present invention passes through phosphate ester so that whole PC/ABS systems are in solutions of weak acidity
Under, the degraded of PC will not be promoted;In addition, blocking to PC by epoxy resin, the degraded of PC is further prevented, both have
Have good auxiliary with effect, its yellowness index only has 2, and impact property only reduces by 15%, meets Ge great automobile main frame maker
Requirement.
Specific embodiment
The specific embodiment that the present invention is provided is elaborated with reference to embodiment.
In following each embodiment and comparative example, each raw material adopts following compositions:
From PC be Cohan wound PC-2600;
From body ABS for benzene neck GP-22;
From emulsion method ABS for Korea Jin Hu HR-181;
From toughener for ROHM AND HAAS EXL-2620;
From antioxidant for CIBA companies antioxidant 1098, the S-9228 of Dover companies;
From lubricant be pentaerythritol ester (PETS);
From epoxy resin be Dow DER330;
From phosphate ester for Suning's chemical industry triphenyl phosphite;
From the AS117C strange beautiful polystyrene-acrylonitriles that are;
From PEP-36 be double (2,6- di-t-butyl -4- aminomethyl phenyls) pentaerythritol diphosphates;
From EMA-g-GMA for Hangzhou sea one EPA-810, GMA contents therein be 5%.
Embodiment 1
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 35rpm, and barrel temperature is 220 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 2
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 15rpm, and barrel temperature is 230 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 3
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 20rpm, and barrel temperature is 240 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 4
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 250 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 5
S1, according to the weight preparation raw material of table 2, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 260 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 6
S1, according to the weight preparation raw material of table 2, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 270 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 7
S1, according to the weight preparation raw material of table 2, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 250 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Embodiment 8
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 240 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
Comparative example 1-3
S1, according to the weight preparation raw material of table 1, make raw material mix homogeneously in input premixed device, and be heated to 60 DEG C
Afterwards 15 minutes are incubated, obtain premix material;
S2, the premix material for obtaining step S1 are added in double screw extruder, and simultaneously pelletizing obtains PC/ABS composite woods to extrusion
Material, wherein the barrel rotating speed of double screw extruder are 30rpm, and barrel temperature is 240 DEG C;
S3, by PC/ABS composites obtained in step S2 through injection moulding finished product.
The component and proportioning of comparative example 1-3 of table 1 and embodiment 1-4
The component and proportioning of embodiment 5-8 of table 2
Formula (is calculated in parts by weight) |
Embodiment 5 |
Embodiment 6 |
Embodiment 7 |
Embodiment 8 |
PC 2600 |
60 |
60 |
60 |
60 |
GP22 |
|
|
|
35.9 |
HR-181 |
17 |
17 |
17 |
|
EXL 2620 |
3 |
3 |
3 |
3 |
AS 117C |
19.2 |
19.1 |
19.0 |
|
1098 |
0.2 |
0.2 |
0.2 |
0.2 |
S-9228 |
0.2 |
0.2 |
0.2 |
0.2 |
PETS |
0.3 |
0.3 |
0.3 |
0.3 |
Dow DER330 |
|
|
|
0.2 |
Triphenyl phosphite |
0.1 |
0.2 |
0.3 |
0.2 |
EPA-810 |
|
|
|
|
The evaluation of implementation result
The sample that above-described embodiment and comparative example are obtained is carried out into dependence test, test result is as shown in table 3 below and table 4:
The test result of comparative example 1-3 of table 1 and embodiment 1-4
The test result of embodiment 5-8 of table 2
From the point of view of comparative example 1 and embodiment 1, using body ABS GP22 than emulsion method ABS HR-181, heat aging performance
Have a very significant increase, be primarily due to the butadiene content of body ABS between 18-22%, and emulsion method ABS HR-181
Butadiene content about 50-60%.Due to the glue content of GP22 it is relatively low, so it is well by SAN
Cladding, so heat aging property is preferable.From the point of view of embodiment 1~4, by the addition of epoxy resin, can significantly increase
Heat aging property, but whole system or meta-alkalescence.From the point of view of embodiment 5~7, triphenyl phosphite is added so that whole
Individual system can prevent the degraded of PC in acidity.In addition, can see from embodiment 3,6,8, by epoxy resin and phosphorous acid
The auxiliary of triphenylmethyl methacrylate is matched somebody with somebody, and can significantly improve the down ratio of impact strength, and in addition yellowness index also can be reduced significantly.
Below the preferred embodiment to the invention is illustrated, but the invention be not limited to it is described
Embodiment, those of ordinary skill in the art can also make a variety of equivalents on the premise of without prejudice to the invention spirit
Modification or replacement, the modification of these equivalents or replacement are all contained in the application claim limited range.