Method for preparing acrylonitrile-butadiene-styrene copolymer toughened rigid polyvinyl chloride composite material

Abstract

The invention provides a method for preparing an acrylonitrile-butadiene-styrene copolymer toughened rigid polyvinyl chloride composite material and belongs to the technical field of high molecular material preparation. The method comprises the steps of: firstly, feeding 61-67 parts of polyvinyl chloride resin, 4-7 parts of plasticizer, 8-13 parts of flexibilizer, 12-18 parts of filler, 0.9-1.5 parts of stabilizer, 4-7 parts of cellulose, 0.4-1 part of lubricant and 0.7-1.5 parts of carbon black into a high-speed mixer to obtain a mixture; and then feeding the mixture into a parallel twin-screw extruder for melt extrusion, and finally, subjecting the extruded material to water cooling, sized dicing and drying, thereby obtaining the finished product, wherein the temperatures of the screws of the parallel twin-screw extruder are controlled to 130 DEG C, 135 DEG C, 140 DEG C, 145 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 165 DEG C, 170 DEG C and 165 DEG C from the first zone to the tenth zone. The method provided by the invention is simple and short in process steps and rational in raw material selection.

Description

technical field [0001] The invention belongs to the technical field of polymer material preparation, and in particular relates to a method for preparing a rigid polyvinyl chloride composite material toughened by an acrylonitrile-butadiene-styrene copolymer. Background technique [0002] Polyvinyl chloride is a basic resin with excellent performance, which is widely used in construction, automobile, home improvement, decoration and other fields. Since polyvinyl chloride materials are required to have good rigidity in the fields of construction and home decoration, less plasticizers are usually added. However, practice has proved that less plasticizers will not only make the polyvinyl chloride material hard, but also cause deterioration at low temperature. Fragility problem. Conversely, if the amount of plasticizer added is increased, it will help to overcome the brittleness at low temperature, but it will seriously affect the rigidity of the PVC material. Therefore, the app...

AI Technical Summary

Problems solved by technology

Since polyvinyl chloride materials are required to have good rigidity in the fields of construction and home decoration, less plasticizers are usually added. However, practice has proved that less plasticizers will not only make the polyvinyl chloride material hard, but also cause deterioration at low temperature. brittle problem

Conversely, if the amount of plasticizer added is increased, it will help to overcome the brittleness at low temperature, but it will seriously affect the rigidity of PVC materials

Therefore, the applicant believes that if attention is paid to the reasonable choice of the amount of plasticizer, it will be difficult to meet the rigidity requirements of the aforementioned construction and home improvement fields for PVC materials, that is to say, it is impossible to find a reasonable balance between rigidity and low-temperature brittleness. balance point

[0003] The above-mentioned technical problems have plagued the industry for a long time and are expected to be solved, but there is no corresponding technical revelation in the patents and non-patent literature published so far