PVC/ABS alloy material with high anti-impact strength and preparation method thereof

Abstract

The invention provides a PVC/ABS alloy material with high anti-impact strength and a preparation method thereof. The alloy material comprises, by weight, 30 to 80% of a PVC composite material modified by filled active nanometer calcium carbonate and 20 to 70% of injection molding grade ABS resin. The PVC composite material comprises PVC resin, a heat stabilizer, a lubricant, an anti-impact modifier, an anti-oxidant, a fire retardant and the filler active nanometer calcium carbonate, and the weight ratio of the above-mentioned components is as follows: PVC resin: the heat stabilizer: the anti-impact modifier: the lubricant: the anti-oxidant: the fire retardant: the filler active nanometer calcium carbonate = 100 parts: 4.7-5.5 parts: 5-15 parts: 0.1-6 parts: 0.1-2 parts: 3-6 parts: 5-20 parts. The preparation method is as follows: all the materials are weighed according to a formula for the PVC composite material and placed in a high speed mixer with a rotate speed of 680 to 1400 r/min for high speed stirring, when the temperature of an obtained mixture rises to 100 to 120 DEG C, the high speed mixture is put in a low speed mixer with a rotate speed of 85 r/min for stirring and cooling, after the temperature of the mixture drops to 40 to 50 DEG C, a desired amount of the dried ABS resin is added into the mixture, low speed mixing at a rotate speed of 85 r/min is carried out for 2 to 8 min, and a discharged material is a dry blend for the alloy material; the dry blend is added into a double screw extruder or a double/single screw two-stage extruder for melt blending and extruding at a temperature of 110 to 170 DEG C, and an obtained material is cut into granular materials by using a plastic grain cutting machine.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PVC / ABS alloy material with high impact resistance and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) plastic is based on PVC resin, mixed with various additives such as stabilizers, plasticizers, fillers, colorants and modifiers, and processed through plasticization and molding. PVC plastic has good comprehensive mechanical properties and flame retardancy, and the source of raw materials is abundant, and the price is low. It is a general-purpose material with the most superior performance-price ratio. The disadvantage is that the melt viscosity is large. [0003] ABS resin is copolymerized from three monomers of acrylonitrile-butadiene-styrene, which not only maintains the gloss and processing fluidity of polystyrene, but also has the impact resistance of rubber and the rigidity of acrylonitrile, which is very excellent. However...

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Problems solved by technology

[0009] The purpose of the invention of this application is to provide a PVC / ABS alloy material with high impact resistance and good comprehensive performance for the problem of poor impact resistance existing in the prior art

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