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A kind of preparation method of dope dyed elastic polyester fiber

An elastic polyester, dope dyeing technology, applied in the field of fiber dyeing, can solve problems such as difficult dyeing performance

Active Publication Date: 2020-04-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for preparing dope-colored elastic polyester fibers, so as to solve the problem that polyester fibers in the prior art are difficult to realize simultaneously on the basis of ensuring resilience through modification. Technical issues for good dyeing performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example gives a preparation method of dope-colored elastic polyester fiber. In this method, the colorant and elastomer toughening agent are made into PET masterbatch, and then the PET masterbatch is added to the PET spinning dope for dope Coloring, and then directly prepare colored elastic polyester fiber by spinning;

[0042] The elastic toughening agent is ethylene-propylene copolymer PBE, melt index: 6000g / 10min; ethylene component: 15wt%; density: 0.861g / cm 3 ; Vicat softening point: 48 ℃.

[0043] The method specifically includes the following steps:

[0044] Step 1, PET pretreatment:

[0045] Dry the PET powder in an oven at 80°C for 8 hours, then raise it to 120°C and continue drying for 4 hours, so that the moisture of the PET powder after drying is below 80ppm, and the intrinsic viscosity of the PET powder is 0.65dL / g;

[0046] Step 2, prepare PET color masterbatch:

[0047] First, mix the coloring agent, coupling agent and antioxidant according to the...

Embodiment 2

[0065] This embodiment provides a preparation method of dope dyed elastic polyester fiber. The difference between this method and Example 1 is that the formulation of the PET color masterbatch is different. The PET color masterbatch in this embodiment is calculated by weight percentage. Made from the following raw materials, PET powder is 76%, coloring agent is 20%, toughening agent is 3%, antioxidant is 0.5%, and coupling agent is 0.5%.

Embodiment 3

[0067] This embodiment provides a preparation method of dope dyed elastic polyester fiber. The difference between this method and Example 1 is that the formulation of the PET color masterbatch is different. The PET color masterbatch in this embodiment is calculated by weight percentage. Made from the following raw materials, the PET powder is 74%, the coloring agent is 20%, the toughening agent is 5%, the antioxidant is 0.5%, and the coupling agent is 0.5%.

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Abstract

The invention provides a method for preparing stock solution dyed elastomeric polyester fiber. The method includes: preparing a colorant and an elastomer toughening agent into PET (polyester) masterbatch; then adding the PET masterbatch into a PET spinning stock solution for stock solution dyeing to obtain the dyed elastomeric polyester fiber directly by spinning. In the method, the colorant and the elastomer toughening agent are taken as the masterbatch and added to the spinning stock solution of the polyester fiber, and technical problems existing in dyeing properties and resilience broughtby the fact that traditional fiber needs to be dyed with dyes after forming are solved; the method is simple in operation and favorable for environmental friendliness, and the obtained polyester fiberis high in color fastness, bright in color, soft in handfeel and good in resilience.

Description

technical field [0001] The invention belongs to the field of fiber dyeing and relates to polyester fibers, in particular to a method for preparing dope-colored elastic polyester fibers. Background technique [0002] Polyester fiber is a synthetic fiber obtained by spinning polyethylene terephthalate (PET), and its trade name is polyester. Polyester fiber not only has high strength, but also has excellent wear resistance and creep resistance, so it is widely used in clothing, home textiles and other textile fields. It is the largest variety of synthetic fibers at present, and is called "three major synthetic fibers" together with nylon and acrylic fibers. [0003] Although polyester fiber has excellent textile performance and wear performance, its dyeing performance and resilience are poor, so the use in many wear fields is limited. For example, in the field of military clothing, the general military clothing is darker in color, and requires high color fastness, high streng...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/04
CPCD01F1/04D01F6/92
Inventor 丁筠乔辉李珊珊
Owner BEIJING UNIV OF CHEM TECH
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