Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the invention provides a kind of ABS composite plastic, comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic carries out modification by SAN and toughner to ABS, make the ABS composite plastic shrinking percentage be improved significantly, the mechanical property of ABS composite plastic is got a promotion.Because the present invention uses acrylonitritrile-styrene resin and toughner that ABS is carried out modification simultaneously, the former belongs to the rigid particles category, and the latter belongs to the cavernous body category, when the two is distributed among the ABS with suitable ratio simultaneously, play synergistic effect, shrink such as mutual resistance, strengthen etc. mutually.Generally, this composite structure belongs to sea-island structure, in this structure of polymer category fabulous over-all properties is arranged.
The shrinking percentage of this acrylonitrile-butadiene-phenylethylene multipolymer (ABS) is 0.4 ~ 0.7%, and its melting index is 220 ℃ of 20 ~ 40g/10min(test conditions/10KG).The weight percentage of this ABS is 70 ~ 90%, preferred 75-85%.It is that product, the platform trade mark of 121H is the product of AG15A1 that ABS can select the emerging company limited in happy golden river in Zhejiang Province, the Ningbo trade mark.
The shrinking percentage of this acrylonitritrile-styrene resin (SAN) is 0.4 ~ 0.7%, and among this SAN, the content of vinyl cyanide is 10 ~ 15%, when this ratio, has good consistency, the weight percentage of this SAN is 2 ~ 10%, is preferably 4-8%, at this scope material rigidity-toughness balanced.
This toughner is high glue powder or MBS(MBS terpolymer).This high glue powder can be selected from the glue content such as HR181 greater than 60% toughner.This MBS can be selected from EM500A, C223A etc.The parts by weight of this toughner are 6.3 ~ 19.5%, are preferably 10-16%, and material rigidity-toughness balanced, shrinking percentage control are strictly in the time of in this scope.
The weight ratio of this toughner and acrylonitritrile-styrene resin is 1 ~ 3:1 ~ 3, and during according to this Proportionality design mixture, sea-island structure is more obvious, rigidity-toughness balanced, and shrinking percentage control is strict.
This dispersion agent is preferably amide waxe class modified material, for example, and ethylene bis stearamide, TAS-2A, TAF etc.This dispersion agent also can select in this area commonly used other to have the material of dispersing property.
This oxidation inhibitor preferred 1076 and 168 is according to the composite mixture in mass ratio 1:2 ~ 2.5.This oxidation inhibitor also can be selected other oxidation inhibitor commonly used in this area.
The embodiment of the invention further provides above-mentioned ABS composite material and preparation method thereof, comprises the steps:
Step S01, supply raw materials:
Take by weighing this acrylonitrile-butadiene-phenylethylene multipolymer, acrylonitritrile-styrene resin, toughner, dispersion agent and oxidation inhibitor by prescription;
Step S02, mix:
This acrylonitrile-butadiene-phenylethylene multipolymer, acrylonitritrile-styrene resin, toughner, dispersion agent and oxidation inhibitor are mixed, obtain mixture;
Step S03 melt extrudes:
This mixture is melt extruded, obtain the ABS composite plastic.
Among the step S01, this acrylonitrile-butadiene-phenylethylene multipolymer, acrylonitritrile-styrene resin, toughner, dispersion agent and oxidation inhibitor do not repeat to set forth at this with aforementioned identical.
Further, before taking by weighing ABS, also comprise the pre-treatment step with ABS:
ABS was placed under 85 ℃ of conditions forced air drying 2~4 hours.
Among the step S02, above-mentioned each component that step S01 is taken by weighing places slow-speed mixer, stirs 3~5min, makes Uniform Dispersion between each component, obtains mixture.
Among the step S03, the mixture that step S02 is obtained places single screw extrusion machine or twin screw extruder to melt extrude processing, and the processing condition that melt extrude are:
175 ~ 220 ℃ of forcing machine one district's temperature, 175 ~ 220 ℃ of two district's temperature, 175 ~ 220 ℃ of three district's temperature, 175 ~ 220 ℃ of four district's temperature, 175 ~ 220 ℃ of five district's temperature, 175 ~ 220 ℃ of six district's temperature, 175 ~ 220 ℃ of seven district's temperature, 175 ~ 220 ℃ of heads, the residence time 2~4min, pressure are 15 ~ 20MPa.Melt extrude rear pelletizing, obtain embodiment of the invention ABS composite plastic.
The embodiment of the invention further provides the application of above-mentioned ABS composite plastic in household electrical appliance.
Below in conjunction with specific embodiment above-mentioned ABS matrix material and preparation method thereof is described in detail.
Embodiment 1
Embodiment of the invention ABS composite plastic comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic preparation method comprises the steps:
Above-mentioned each component is mixed, obtain mixture;
This mixture is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization becomes matrix material.Wherein, each heating region temperature setting of screw rod is respectively: district's temperature: 175 ℃; Two districts: 185 ℃; Three districts: 200 ℃; Four districts: 200 ℃; 210 ℃ of five district's temperature; 200 ℃ of six district's temperature; 210 ℃ of seven district's temperature; Head: 220 ℃; The residence time 2~4min.Pressure is 15 ~ 20MPa.
Embodiment 2
Embodiment of the invention ABS composite plastic comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic preparation method comprises the steps:
Above-mentioned each component is mixed, obtain mixture;
This mixture is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization becomes matrix material.Wherein, each heating region temperature setting of screw rod is respectively: district's temperature: 185 ℃; Two districts: 195 ℃; Three districts: 220 ℃; Four districts: 220 ℃; 220 ℃ of five district's temperature; 180 ℃ of six district's temperature; 200 ℃ of seven district's temperature; Head: 210 ℃; Residence time 324min.Pressure is 15 ~ 20MPa.
Embodiment 3
Embodiment of the invention ABS composite plastic comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic preparation method comprises the steps:
Above-mentioned each component is mixed, obtain mixture;
This mixture is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization becomes matrix material.Wherein, each heating region temperature setting of screw rod is respectively: district's temperature: 195 ℃; Two districts: 200 ℃; Three districts: 180 ℃; Four districts: 210 ℃; 210 ℃ of five district's temperature; 200 ℃ of six district's temperature; 180 ℃ of seven district's temperature; Head: 200 ℃; The residence time 2 ~ 4min.Pressure is 15 ~ 20MPa.
Embodiment 4
Embodiment of the invention ABS composite plastic comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic preparation method comprises the steps:
Above-mentioned each component is mixed, obtain mixture;
This mixture is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization becomes matrix material.Wherein, each heating region temperature setting of screw rod is respectively: district's temperature: 205 ℃; Two districts: 205 ℃; Three districts: 200 ℃; Four districts: 220 ℃; 220 ℃ of five district's temperature; 185 ℃ of six district's temperature; 200 ℃ of seven district's temperature; Head: 200 ℃; The residence time 2~4min.Pressure is 15 ~ 20MPa.
Embodiment 5
Embodiment of the invention ABS composite plastic comprises the component of following weight percentage:
Embodiment of the invention ABS composite plastic preparation method comprises the steps:
Above-mentioned each component is mixed, obtain mixture;
This mixture is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization becomes matrix material.Wherein, each heating region temperature setting of screw rod is respectively: district's temperature: 185 ℃; Two districts: 195 ℃; Three districts: 205 ℃; Four districts: 220 ℃; 185 ℃ of five district's temperature; 210 ℃ of six district's temperature; 200 ℃ of seven district's temperature; Head: 220 ℃; The residence time 2~4min.Pressure is 15 ~ 20MPa.
Performance test:
Tensile strength is tested by ASTM D-638 standard.Specimen types is the I type, batten size (mm): (176 ± 2) (length) * (12.6 ± 0.2) (end width) * (3.05 ± 0.2) (thickness), and draw speed is 50mm/min;
Flexural strength and modulus in flexure are tested by ASTM D-790 standard.Specimen types is specimen size (mm): (128 ± 2) * (12.67 ± 0.2) * (3.11 ± 0.2), rate of bending are 20mm/min;
The socle girder notched Izod impact strength is tested by ASTM D-256 standard.Specimen types is the I type, specimen size (mm): (63 ± 2) * (12.45 ± 0.2) * (3.1 ± 0.2); The breach type is category-A, and the breach residual thickness is 1.9mm;
The performance test results of the ABS matrix material of above-described embodiment 1 ~ 5 sees table 1.
Table 1
As can be seen from Table 1, composite properties becomes along with each component proportion: 1, toughner content increases, and mixture shock strength and elongation improve, and stretching, flexural strength reduce; 2, the mixture optimum performance appears at ABS 80%, and SAN 6%, under the proportioning of toughner 12.9%, this moment the composite properties balance; 3, in the present embodiment, the shrinking percentage of mixture all remains in the 0.2-0.4% scope and changes.
Shrinking percentage on the prior art:
Prior art |
121H |
AG15A1 |
Shrinking percentage (%) |
0.4-0.7 |
0.4-0.7 |
Table 2
The ABS shrinking percentage scope of prior art is at 0.4-0.7% as can be seen from Table 2.Prior art and embodiment are done contrast, and we can find, embodiment obviously dwindles aspect shrinking percentage, shows good dimensional stability.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.