Raw material mixing device and process for hygroscopicity-improved nylon 6

Abstract

The invention discloses a raw material mixing device and a process for hygroscopicity-improved nylon 6. The invention belongs to the technical field of nylon 6 production. The raw material mixing device for hygroscopicity-improved nylon 6 comprises a supporting mechanism, a heating and mixing mechanism and a stirring and mixing mechanism, the supporting mechanism comprises a vertical supporting plate, the top end of the vertical supporting plate is fixedly connected with an upper supporting plate, the bottom end of the vertical supporting plate is fixedly connected with a lower supporting plate, the heating and mixing mechanism comprises a heating box, and the outer wall of the top of the heating box is communicated with a feeding pipe. The addition of a modifying agent can be realized; the hygroscopicity of the nylon 6 is reduced; the hygroscopicity of the nylon 6 is effectively and progressively improved, the shrinkage rate of the nylon 6 is reduced, and during the raw material mixing process, a modifier and caprolactam are completely mixed through the arrangement of the mixing device so as to improve the action effect of the modifier and further improve the performance improvement effect of the nylon 6.

Description

technical field [0001] The invention relates to the technical field of nylon 6 production and processing, and more specifically, relates to a raw material mixing device and process for nylon 6 with improved hygroscopicity. Background technique [0002] Nylon 6, also known as polyamide-6, PA6, nylon 6, nylon 6 is a translucent or opaque milky white semi-crystalline polymer, which is characterized by excellent thermodynamic properties, light weight, good toughness, chemical resistance and durability , Also has good wear resistance and self-lubricating properties. The chemical and physical properties of nylon 6 are very similar to nylon 66, however, it has a lower melting point and a wide process temperature range. [0003] Nylon 6 has better impact resistance and solvent resistance than nylon 66 plastic, but it is also more hygroscopic, because many quality characteristics of plastic parts are affected by hygroscopicity, and too strong hygroscopicity will also cause nylon 6 p...

AI Technical Summary

Problems solved by technology

The chemical and physical properties of nylon 6 are very similar to nylon 66, however, it has a lower melting point and a wide range of process temperatures

[0003] Nylon 6 has better impact resistance and solvent resistance than nylon 66 plastic, but it is also more hygroscopic, because many quality characteristics of plastic parts are affected by hygroscopicity, and too strong hygroscopicity will also cause nylon 6 plastic The raw material shrinkage rate is too high, therefore, it is necessary to improve the hygroscopicity of nylon 6 and reduce its hygroscopicity

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