Polymerization device for nylon-6 slice with low melt resistance, high spinnability and ultralow viscosity and operation method thereof

Abstract

The invention discloses a polymerization device for a nylon-6 slice with low melt resistance, high spinnability and ultralow viscosity. The polymerization device comprises a polymerization unit, polymerization box bodies and a base. According to the invention, through arrangement of a deaerator on the polymerization unit through a dredging tube, generation of oxide due to an oxidation reaction during implementation of reaction mass production of reactants in the polymerization box bodies can be effectively avoided, so the glossiness of the nylon-6 slice can be greatly improved, and yellowing caused by the oxidation reaction can be effectively avoided; meanwhile, through arrangement of heating units and heat exchange units in the polymerization unit and between the polymerization box bodies, the internal temperature of the polymerization box bodies can be effectively guaranteed so as to obtain an effective circulation heat supply effect during implementation of polymerization of the reactants, and a temperature during the reaction is allowed to reach an optimal steady state to avoid the situation of reduction of quantitative generation of the reactants due to an incomplete reaction, so the purposes of effectively improving the polymerization effect of the nylon-6 slice and realizing effective mass production are achieved, and disadvantages in the prior art are effectively madeup.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a low-melt resistance and high-spinnability ultra-low-viscosity nylon 6 slice polymerization device and an operation method. Background technique [0002] Nylon "6" chip is a polymer compound made of caprolactam as raw material, adding a certain amount of additives, polymerizing under certain technological conditions, and going through the processes of tape injection, pelletizing, extraction and vacuum drying. It is the main raw material for the production of nylon filaments, staples, brown yarns, fishing nets and nylon cords, etc. Its poly pick extraction and related equipment are the main technical keys of this product. Its main quality indicators are: average molecular weight of injection tape slices 12700 (standard: 12700\13100), the monomer content of the injection tape is: 8.98% (standard is <10%), the average molecular weight of the dried slices is 14200 ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the nylon 6 slices are polymerized, the oxidation reaction is very easy to occur and the complete amount of the reaction is reduced, so that the gloss is greatly reduced and the yellowing is very easy to occur, and the circulation heating effect cannot be effectively achieved during heating. During the reaction, the temperature is not stable enough to cause the incomplete reaction to reduce the quantitative production of reactants, so it cannot meet the needs of the prior art

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