High-fluidity, scratch-resistant and low-temperature-folding-resistant ABS (acrylonitrile butadiene styrene)/TPU (thermoplastic polyurethane) alloy material and preparation method and application thereof

Abstract

The invention discloses a high-fluidity, scratch-resistant and low-temperature-folding-resistant ABS/TPU alloy material which is prepared from the components by weight percentage of 60 wt%-85 wt% of ABS resin, 10 wt%-30 wt% of TPU and 1 wt%-10 wt% of compatilizer; the preparation method comprises the steps that the ABS resin and the TPU are dried under the condition of 85 DEG C to 100 DEG C for 2-4 hours, then the ABS resin and the TPU are fully mixed with other component raw materials according to the ratio by a high-speed mixer for 2-10 minutes, the mixtures is then transmitted to a double-screw extruder by a precision metering feeding device, and a product is obtained through mixing, extrusion, bracing, cooling and grain cutting; the prepared ABS/TPU alloy material has excellent scratch resistance, low low temperature folding resistance and high fluidity, the preparation method is simple in process, convenient to operate and suitable for industrial production, and the ABS/TPU alloy material can be applied to the fields of small electronic consumer products, electric tools, computer keys, automobile bumpers and the like.

Description

technical field [0001] The invention relates to an ABS composite modified material, in particular to a high-flow, scratch-resistant, low-temperature foldable ABS / TPU alloy material and its preparation method and application, belonging to the field of polymer materials. Background technique [0002] ABS resin is a terpolymer composed of styrene, butadiene and acrylonitrile. It combines the high fluidity of styrene, the rubber toughness of butadiene and the chemical resistance of acrylonitrile. It has excellent processing performance, Low temperature resistance, electrical insulation, chemical corrosion resistance, high gloss and excellent electroplating performance, as well as good creep resistance, high dimensional stability, small molding shrinkage, etc., are widely used in military industry, automobiles, electronic appliances, etc. The field of application is very wide. However, the scratch resistance of ABS resin is not good, and the low temperature bending resistance is...

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Problems solved by technology

[0004] "ABS / TPU Alloy Properties and Microstructure" "Modern Plastics Processing Application" and "Research on Blending Modification of Thermoplastic Polyurethane to ABS" "Synthetic Resins and Plastics" pointed out that TPU has good compatibility with ABS, and the addition of TPU The toughness and fluidity of ABS can be improved at the same time, but how to prepare ABS / TPU alloy materials with balanced mechanical strength, excellent scratch resistance, low-temperature folding properties, and high fluidity has not been reported yet.

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