Process for producing caprolactam and nylon 66 salt copolymer slice

Abstract

The invention relates to a process for producing a caprolactam and nylon 66 salt copolymer slice. The process comprises the following steps of: 1) preparing raw materials, namely respectively preparing caprolactam melt, a nylon 66 salt aqueous solution and an additive; 2) mixing the raw materials prepared in the step 1) in a mixer; 3) reacting the raw materials mixed in the step 2) in a pre-polymerization tower; 4) reacting the materials treated in the step 3) in a post-polymerization tower for reaction; 5) slicing the materials prepared in the step 4); 6) extracting the slices prepared in the step 5); 7) drying the extracted slices in the step 6); and 8) cooling the slices dried in the step 7), thus obtaining the caprolactam and nylon 66 salt copolymer slice finished product. According to the technical scheme, the caprolactam and nylon 66 salt copolymer slice has the characteristics of outstanding tensile strength, anti-impact strength and anti-puncturing strength, high gas isolation performance, high heat resistance, high mist degree, high glossiness, low temperature performance, flexibility, high transparency, high printablility and the like.

Description

technical field [0001] The invention relates to a production process of caprolactam and nylon 66 salt copolymer chips. Background technique [0002] Nylon 6 slices are the base material for the production of nylon film and fishmesh, and are widely used in food packaging, pharmaceutical packaging, packaging of electronic industry materials, and fishmesh industry. However, due to the high melting point and glass transition temperature of nylon 6, The low temperature performance is poor, the film rupture rate is high when the film is drawn, and the softness is poor at low temperature, especially as a spinning fish mesh material, its transparency needs to be further improved. Contents of the invention [0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a nylon 6 that maintains its outstanding tensile strength, impact strength and puncture strength, good gas barrier properties, excellent heat resistance, and haze In additio...

AI Technical Summary

Problems solved by technology

[0002] Nylon 6 slices are the base material for the production of nylon film and fishmesh, and are widely used in food packaging, pharmaceutical packaging, packaging of electronic industry materials, and fishmesh industry. However, due to the high melting point and glass transition temperature of nylon 6, The low temperature performance is poor, the film rupture rate is high when the film is drawn, and the softness is poor at low temperature, especially as a spinning fish mesh material, its transparency needs to be further improved

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