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High-impact pc/asa alloy material and preparation method thereof
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An alloy material and high-impact technology, which is applied in the field of high-impact PC/ASA alloy material and its preparation, to achieve the effect of ultra-high impact performance
Active Publication Date: 2020-08-11
SHANGHAI KUMHO SUNNY PLASTICS
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[0004] In the prior art, the patent CN102372915A discloses a high-impact high-flow PC / ASA alloy material, and the unnotched impact of the PC / ASA alloy material prepared by it can reach 85KJ / m 2 Above, but the notch impact is all at 40KJ / m 2 the following
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Embodiment 1
[0031] A high-impact PC / ASA alloy material, comprising the following components in parts by weight: 75 parts of PC resin, 10 parts of ASA resin, 10 parts of SAN resin, 4 parts of methyl methacrylate / silicon / acrylate toughening agent , EMA-GMA 1 part, phosphite 0.2 part, pentaerythritol ester 0.2 part.
[0032] Its preparation method is as follows:
[0033] Send the above-mentioned prepared components into the mixer for pre-mixing for 3-10 minutes, pass the pre-mixed material obtained above through a twin-screw extruder, control the speed of the screw extruder to 600rpm, and the extrusion temperature to 240-260°C. The pressure is 2-4MPa, and the length-to-diameter ratio of the screw is 44:1.
Embodiment 2
[0048] A high-impact PC / ASA alloy material, comprising the following components in parts by weight: 70 parts of PC resin, 15 parts of ASA resin, 10 parts of SAN resin, 4 parts of methyl methacrylate / silicon / acrylate toughening agent , 1 part of EMA-GMA, 0.2 part of phosphite, and 0.2 part of pentaerythritol ester.
[0049] Its preparation method is as follows:
[0050] Put the above prepared components into the mixer for premixing for 3 to 10 minutes, pass the premixed material obtained above through a twin-screw extruder, control the screw extruder speed to 400rpm, extrude temperature at 250°C, and pressure at 2~4MPa, the length-to-diameter ratio of the screw is 44:1.
Embodiment 3
[0052] A high-impact PC / ASA alloy material, comprising the following components in parts by weight: 70 parts of PC resin, 10 parts of ASA resin, 15 parts of SAN resin, 4 parts of methyl methacrylate / silicon / acrylate toughening agent , 1 part of EMA-GMA, 0.2 part of phosphite, and 0.2 part of pentaerythritol ester.
[0053] Its preparation method is as follows:
[0054] Send the above-mentioned prepared components into the mixer for pre-mixing for 3-10 minutes, pass the pre-mixed material obtained above through a twin-screw extruder, control the screw extruder speed to 450rpm, extrude temperature at 250°C, and pressure at 2~4MPa, the length-to-diameter ratio of the screw is 44:1.
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Abstract
The invention relates to high-impact PC / ASA alloy and a preparation method of the high-impact PC / ASA alloy. The alloy material comprises the following components in parts by weight: 30 to 75 parts of PC resin, 5 to 30 parts of ASA resin, 5 to 25 parts of SAN resin, 0.1 to 1 part of an antioxidant, 0.1 to 1 part of a lubricant, 1 to 5 parts of a compatibilizer and 2 to 10 parts of a toughening agent. The preparation method comprises the following steps: adding the components to a mixer to be mixed, blending and granulating through a twin-screw extruder, controlling the revolving speed of the screw extruder to be 400 to 600rpm, the extruding temperature to be 240 to 260 DEG C, and the pressure to be 2 to 4MPa, melting and extruding, and granulating to obtain a high-impact PC / ASA alloy material. Compared with the prior art, the prepared PC / ASA alloy material disclosed by the invention has ultra-high impact physical properties.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a high-impact PC / ASA alloy material and a preparation method thereof. Background technique [0002] Acrylonitrile-styrene-acrylate (ASA) is an engineering plastic with physical properties similar to ABS. ASA resin has the characteristics of good dimensional stability and high notched impact performance. Compared with ABS resin, ASA resin has great advantages in terms of weather resistance and aging resistance of the material. This is because the double bond of polybutadiene in ABS is easily oxidized and crosslinked under the condition of oxygen, UV radiation and heat, which makes the rubber age, impact strength decreases and fade. However, since ASA does not contain carbon-carbon double bonds, ASA has better weather resistance and aging resistance. Therefore, ASA engineering plastics have a great market application space in the automotive, communication, electronics and other ...
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