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Production technique of shockproof polyester industrial filament yarn

A production process and impact-resistant technology, applied in the direction of filament/thread forming, single-component polyester rayon, heating/cooling fabric, etc., can solve the problem of high breaking strength, achieve good buffering effect, good toughness, strong Impact resistance effect

Inactive Publication Date: 2011-01-26
ZHEJIANG KESITE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on impact-resistant polyester industrial filaments with high strength and high elongation, such as safety belts, protective nets, bend-resistant hoses, protective clothing and other impact-resistant products. High-strength wear-resistant polyester industrial filament, most of its products are characterized by high breaking strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A production process of impact-resistant polyester industrial filaments, including solid-phase thickening-melt spinning-high temperature stretching, heat setting-winding forming:

[0026] 1) Solid-phase thickening: The intrinsic viscosity of the polyester chips used is 0.64dl / g, the melting point is ≥261°C, the carboxyl group is ≤30mol / t, the content of diethylene glycol is ≤1.2%, and the pre-crystallization degree reaches 40%. Effectively remove unbound water and reduce the impact of powder produced in the process of viscosification on textiles.

[0027] By vacuum drum phase polycondensation, under the process conditions of 230°C and vacuum degree ≤ 60Pa, small molecules such as diethylene glycol and water are continuously released, and the polyester macromolecular chain is gradually lengthened, the molecular weight is gradually increased, and the intrinsic viscosity is increased.

[0028] The 30° large inclination angle of the drum and the high speed of...

Embodiment 2

[0037] Embodiment 2: A production process of impact-resistant polyester industrial filaments, including solid-phase tackification-melt spinning-high temperature stretching, heat setting-winding forming:

[0038] 1) Solid-phase thickening: The intrinsic viscosity of the polyester chips used is 0.62dl / g, the melting point is ≥265°C, the carboxyl group is ≤30mol / t, the content of diethylene glycol is ≤1.25%, and the pre-crystallization degree reaches 39%. Effectively remove unbound water and reduce the impact of powder produced in the process of viscosification on textiles.

[0039] Through vacuum drum phase condensation, under the process conditions of 225°C and vacuum degree ≤ 60Pa, small molecules such as diethylene glycol and water are continuously released, and the polyester macromolecular chain is gradually lengthened, the molecular weight is gradually increased, and the intrinsic viscosity is increased.

[0040] The 30° large inclination angle of the drum and the high spe...

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Abstract

The invention relates to a manufacturing technique of a shockproof polyester filament for industry, comprising: solidoid viscosifying, melt spinning, high temperature tension; heat setting, winding forming. Particularly, a viscosified polyester chip is adopted high POY in low temperature, super drawing in ultra-temperature and high power retraction in ultra-temperature via filature on a spinning,leading and rolling one-step combination machine; then macromolecule chain is regularly curled via cold treatment to make the rupture strength of the fiber reach to 6.8cN / dtex and make the elongationat break reach to 36%, so as to have the advantages of stronger bounce impact force, better toughness, good cushioning effect when getting external force. The invention is applicable to firenet, protective screening, safety belt, exposure suit and products which are prevented from exogenic action.

Description

technical field [0001] The invention relates to a production process of polyester industrial filaments, in particular to a production process of impact-resistant polyester industrial filaments. Background technique [0002] Since the 1980s, European and American countries began to industrialize the production of polyester industrial yarns. In the 1990s, my country began to introduce equipment and technology. It has been mainly producing high-strength types, and has successively developed low-shrinkage, high-modulus and low-shrinkage products. Most of them are outstanding in high breaking strength, high initial modulus, low dry heat shrinkage and other internal indicators, and are widely used in conveyor belts, hoisting belts, V-belts, tire cord fabrics, safety belts, protective nets, bending-resistant rubber hoses, and protective clothing. And other impact-resistant products. However, there are few reports on impact-resistant polyester industrial filaments with high strength ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/08D01D5/088D01D5/12D02J1/22D02J13/00D06C7/02D01F6/62
Inventor 陈晓美
Owner ZHEJIANG KESITE CHEM FIBER