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Primary liquid coloring sheath-core regenerated polyester fiber and preparation method thereof

A technology for regenerated polyester and dope dyeing, which is applied in the direction of adding pigments to spinning dope, conjugated synthetic polymer man-made filaments, etc., can solve problems such as environmental pollution and waste of resources, reduce comprehensive economic costs and save utilization. , the effect of reducing costs

Inactive Publication Date: 2020-04-10
SHANGHAI DEFULUN CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] my country's cumulative social stock of waste polyester bottles is about 10 million tons, most of which are for one-time use. If they are not recycled, it will not only cause waste of resources, but also seriously pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: Preparation of 3.33dtex×51mm black sheath-core composite regenerated polyester fiber

[0039] The recycled polyester used in this example is selected from commercially available recycled polyester chips without matting agent; the silane coupling agent used is dodecylmethyldiethoxysilane.

[0040] S1: Preparation of dope pigmented cortex components

[0041] S1.1 Pretreatment of environmentally friendly toner

[0042] Set the temperature of the high-speed mixer to 105°C and heat it up, start the mixer to run at a low speed, pour a certain weight of environmentally friendly carbon black FR8150 powder into the mixer, then switch the mixer to high-speed operation, and wait until the mixer reaches the setting After the temperature is 105°C, add a silane coupling agent to pretreat the toner for 25 minutes. The weight of the silane coupling agent added is 0.6% of the weight of the black toner, and then the pretreated toner is put into the bag and sealed.

[004...

Embodiment 2

[0056] Example 2 Preparation of 3.33dtex×51mm blue sheath-core composite regenerated polyester fiber

[0057] The recycled polyester used in this example is selected from commercially available recycled polyester chips without matting agent; the silane coupling agent used is dodecyltrimethoxysilane.

[0058] S1: Preparation of dope pigmented cortex components

[0059] S1.1 Pretreatment of environmentally friendly toner

[0060] Set the temperature of the high-speed mixer to 110°C and heat it up, start the mixer to run at low speed, pour a certain weight of C.I. Pigment Blue 29 powder into the mixer, then switch the mixer to high-speed operation, and wait until the mixer reaches the setting After temperature, add silane coupling agent to pretreat the toner for 30min. The weight of the silane coupling agent added is 1.0% of the weight of C.I. Pigment Blue 29 powder, and then the pretreated toner is put into the bag and sealed.

[0061] S1.2 Pretreatment of recycled polyester ...

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PUM

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Abstract

The invention relates to a primary liquid coloring sheath-core regenerated polyester fiber and a preparation method thereof. The preparation method comprises the following steps of S1, preparing a primary liquid coloring sheath layer component, namely, mixing pretreated environment-friendly toner and regenerated polyester powder according to a weight ratio of 20-26 to 74-80 to prepare a primary liquid coloring regenerated polyester master batch; and then, carrying out mixing on the primary liquid coloring regenerated polyester master batch and a regenerated polyester slice at a ratio of 4-15 to 85-96 in a vacuum state, and carrying out continuous drying at 120-130 DEG C to prepare the primary liquid coloring sheath layer component; S2, preparation of a sheath-core type regenerated composite fiber raw yarn, namely, extruding and melting the primary liquid coloring sheath layer component and the regenerated polyester slice serving as a core layer component into a melt in respective screwextruders to prepare the sheath-core type regenerated composite fiber raw yarn, and controlling the melt temperature to be 282-290 DEG C, controlling the weight ratio of the primary liquid coloring sheath layer component to the core layer component to be 15-25 to 85-75, and controlling the spinning speed to be 650-1000m / min; and S3, preparing the primary liquid coloring sheath-core regenerated polyester fiber, namely, carrying out drying, cooling and cutting off on tows through a raw yarn first-break-draft process to prepare the primary liquid coloring regenerated polyester fiber with the sheath-core structure.

Description

technical field [0001] The invention belongs to the technical field of synthetic fiber production, and in particular relates to a dope-colored sheath-core regenerated polyester fiber and a manufacturing method thereof. Background technique [0002] The sheath-core composite fiber refers to a composite fiber in which two component polymers respectively form a skin layer and a core layer continuously along the fiber longitudinal direction. According to the arrangement between the sheath and the core, it can be divided into the same core type, eccentric type, special-shaped sheath core type and multi-layer sheath core type, and the same core type is the most common. [0003] A variety of skin-core composite fibers with different characteristics can be used to make self-adhesive fabrics, such as ES fibers developed by Nippon Suzu Corporation; conductive or antistatic fabrics, such as tire cords; silk-like and wool-like fabrics, and organic optical fibers. [0004] In terms of m...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/04
CPCD01F1/04D01F8/14
Inventor 高俊杰李东华冯忠耀陆育明杨卫忠朱亚宏王缘赵学东杨成周永华
Owner SHANGHAI DEFULUN CHEM FIBER
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