Process for producing fire-retardant high-tenacity terylene yarn

Abstract

The invention relates to a process for producing a fire-retardant high-tenacity terylene yarn, which comprises the following steps: reforming equipment by using the prior industrial terylene yarn production line; adopting two sets of solid phase thickening devices; preparing high-viscosity polyester slices and high-viscosity fire-retardant master batches respectively, and thickening the high-viscosity polyester slices and the high-viscosity fire-retardant master batches, wherein the high-viscosity fire-retardant master batches are metered precisely according to certain proportion through a master batch adding machine and are mixed with the high-viscosity polyester slices, the optimal proportion of the two materials is controlled to be 12:88, so that the fire resistance and the tenacity are greatly improved; processing the two materials by a pin screw extruder, a meter and a spinneret plate; after slow cooling, lateral blowing and oiling, performing multi-stage hot-rolling stretching; and finally winding the two materials into spinning cakes on a winder. The process has the characteristics of simplicity, easy operation, high product tenacity, good fire resistance and the like.

Description

Technical field [0001] The invention relates to the technical field of polyester spinning, in particular to a process for producing flame-retardant polyester high-strength yarns. Background technique [0002] In recent years, due to the strengthening of people's awareness of environmental protection, fire protection, and safety, more and more attention has been paid to fireproof materials. Among them, fireproof and flame retardant industrial textiles have become the focus. my country’s civil POY polyester yarn has mature experience in flame retardancy, which can be basically summarized into three types: one is to apply flame-retardant materials to the molecular chain of polymer materials, called copolymerization; the other is to combine flame-retardant materials with Polymer materials are mixed and processed, which is called blending method; the third method is to prepare flame-retardant materials as a solution to finish textile polymer materials, which is called post-finishing m...

AI Technical Summary

Problems solved by technology

But because of its low product strength, it is generally used in civilian products such as clothing fabrics and clothing materials with low strength.

With the development of polyester industrial yarn, its scope of application continues to expand. Products such as fire-resistant hoisting ropes, safety belts, flame-retardant mining belt cores, fire-resistant tarpaulins, coated fabrics, and decorative materials have attracted more and more attention. It is a high-strength flame-retardant polyester yarn, which requires high mechanical strength while being flame-retardant. The traditional civilian POY polyester yarn obviously cannot meet this requirement.