Polymerization kettle for PVC plastic anti-impact agent production

Abstract

The invention discloses a polymerization kettle for PVC plastic anti-impact agent production, and relates to the technical field of polymerization kettles. The polymerization kettle comprises a polymerization kettle body, wherein three reinforcing supporting legs are fixedly installed at the bottom end of the polymerization kettle body, a material distributing and feeding mechanism is installed at the top end of the polymerization kettle body, driving mechanisms are installed at the two ends of the circumferential outer wall of the polymerization kettle body, a two-way mixing assembly is arranged in the polymerization kettle body, the material distributing and feeding mechanism comprises a mounting opening formed in the top end of the polymerization kettle body, the inner wall of the mounting opening is rotationally connected with a feeding hopper through a sealing bearing, and a hemispherical convex block is fixedly mounted at the inner bottom of the feeding hopper. The driving mechanism can drive a bidirectional mixing assembly in the polymerization kettle body to rotate, meanwhile, torsion of the end column is conducted through the arranged push-pull rod by utilizing a linkage effect, then the feeding hopper is driven to rotate, and uniform feeding treatment can be achieved through the arranged material distributing and feeding mechanism.

Description

technical field [0001] The invention relates to the technical field of polymerization kettles, in particular to a polymerization kettle for producing PVC plastic anti-impact agents. Background technique [0002] PVC is the English abbreviation of polyvinyl chloride. It is a polymer formed by polymerization of vinyl chloride monomer (VCM) in the presence of peroxides, azo compounds and other initiators or under the action of light and heat according to the mechanism of free radical polymerization. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins. PVC is a white powder with an amorphous structure, with a small degree of branching, a glass transition temperature of 77-90°C, and begins to decompose at around 170°C. It has poor stability to light and heat. Decomposition produces hydrogen chloride, which further autocatalyzes and decomposes, causing discoloration and rapid decline in physical and mechanical properties...

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Problems solved by technology

[0004] However, the above-mentioned invention has the following disadvantages: the stirring design of the above-mentioned patent is a conventional shaft-type stirring, and its range of action is relatively fixed. The direction of action is relatively single, resulting in low actual reaction efficiency; on the other hand, the above-mentioned patent lacks a feeding design, which leads to concentrated accumulation of raw materials when feeding, which further reduces the mixing efficiency of the device for materials and increases the reaction time. Therefore, there are certain limitations

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