Polyolefin/styrene resin composition and preparation method thereof

Abstract

The invention relates to the technical field of polymer / styrene resin composition and a preparation method thereof. The composition comprises the following compositions, by weight, 100-800 parts of polyolefin, 100-800 parts of styrene resin, 30-100 parts of compatilizer, 30-200 parts of flexibilizer, 50-200 parts of flame retardants, 40-80 parts of effect assisting flame retardants, 10-100 parts of compound flame retardants, 0-30 parts of enhancer, 0-10 parts of anti-oxidation additives and 0-5 parts of processing aids. The preparation method of the composition comprises the steps of placing the compositions of the proportion in a high-speed mixer and mixing the compositions for 1-3 minutes; conveying evenly-mixed materials into a double-screw extruder through a precise metering material-conveying device; sufficiently mixing the materials through the shearing function of screw rods, and feeding the compound flame retardants and the enhancer into the extruder in a melting section of the extruder through a side direction forced feeding device; and packing the melted mixing materials into finished products after extrusion, strip pulling, cooling and dicing. The composition has remarkable flame retarding effect and is stable in mechanical performance.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and relates to a polyolefin / styrene-based resin composition and a preparation method thereof. Background technique [0002] Polyolefin plastic is a general-purpose plastic. Because of its relatively simple synthesis process, low price and excellent performance, it has a wide range of applications. Styrene-based resins are engineering plastics with excellent performance. The typical product is acrylonitrile-butadiene-styrene Terpolymer, this product has excellent chemical resistance, formability, high and low temperature toughness, but its synthesis process is complicated, and its price is more expensive than polyolefin, which limits its use. In order to better integrate the advantages and properties of the two materials, many scholars have studied the alloy materials of the two products. However, it is well known that polyolefins and styrene-based resins have poor compatibility. If the ...

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Problems solved by technology

[0002] Polyolefin plastic is a general-purpose plastic. Because of its relatively simple synthesis process, low price and excellent performance, it has a wide range of applications. Styrene-based resins are engineering plastics with excellent performance. The typical product is acrylonitrile-butadiene-styrene Terpolymer, this product has excellent chemical resistance, formability, high and low temperature toughness, but its synthesis process is complicated, and its price is more expensive than polyolefin, which limits its use

In order to better integrate the advantages and properties of the two materials, many scholars have studied the alloy materials of the two products. However, it is well known that polyolefins and styrene-based resins have poor compatibility. If the two are simply melted and mixed, the obtained The product will delaminate to form two phases, and the material performance is extremely poor

Moreover, research on the flame retardancy of polyolefin / styrene-based resin compositions is less, as in the PP and ABS nano-filler alloy and its preparation method in the Chinese patent with the published application number 200510023968.7, a kind of PP and ABS nano-filler is obtained Alloy, but affected by the formula and processing technology design in this invention, the ratio of the two main materials is in a relatively narrow range. In the actual application process, the scope of use has great limitations

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