Unlock instant, AI-driven research and patent intelligence for your innovation.

Colored special-shaped acrylic fiber as well as preparation method and application thereof

A technology of acrylic fibers and special shapes, which is applied in textiles and papermaking, chemical post-treatment of synthetic polymer rayon, single-component synthetic polymer rayon, etc. Dyeing old dude is not high, to achieve the effect of avoiding subsequent dyeing, high color fastness to washing, and green and environmentally friendly operation

Pending Publication Date: 2021-06-22
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the dope coloring may affect the spinnability of the fiber and the physical properties of the fiber, and it is not easy to change the color
After dyeing, there may be a problem that the dyeing age is not high, and at the same time, a large amount of sewage will be produced

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Colored special-shaped acrylic fiber as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Fiber forming: the solvent used is an aqueous sodium thiocyanate solution with a mass concentration of 50wt%, and dissolves the following monomers in parts by weight by a high-speed dissolving machine: 92 parts of acrylonitrile, 7.5 parts of methyl methacrylate and methacrylic acid 0.5 part of sodium is prepared into a spinning solution with a polyacrylonitrile polymer (the viscosity-average molecular weight of polyacrylonitrile in the polyacrylonitrile polymer is about 45,000-65,000) content of 7-12% after dissolving.

[0034] The spinning solution is heated to 85°C by a heater, and the heated spinning solution is extruded from the rectangular hole of the spinneret, and the as-spun fiber is formed by double diffusion in the coagulation bath. Among them, the aspect ratio of the extrusion hole of the spinneret nozzle is 15:1, the aspect ratio of the extrusion hole of the nozzle hole is 10:1, the hole length of the extrusion hole is greater than 0.1mm, the number of sp...

Embodiment 2

[0039] (1) Fiber forming: the solvent used is an aqueous solution of sodium thiocyanate with a mass concentration of 50 wt%, and dissolves the following monomers in parts by weight by a high-speed dissolving machine: 90 parts of acrylonitrile, 9 parts of methyl acrylate and 1 part of sodium propylene sulfonate, After dissolving, the spinning solution with a content of 10-12% of polyacrylonitrile polymer (the viscosity-average molecular weight of polyacrylonitrile in the polyacrylonitrile polymer is about 45,000-65,000) is prepared.

[0040] The spinning solution is heated to 85°C by the heater, and the heated spinning solution is extruded from the rectangular hole of the spinneret, and the primary fiber is formed by double diffusion in the coagulation bath, wherein the length and width of the extrusion hole of the spinneret The ratio of 10:1, the aspect ratio of the injection hole extrusion hole is 6:1, the hole length of the extrusion hole is greater than 0.3mm, the number of ...

Embodiment 3～8

[0045] The preparation steps of Examples 3-8 are the same as in Example 1, and most of its experimental parameters are also the same as in Example 1. The difference is that the length-to-width ratio of the nozzle hole of the spinneret and the length-to-width ratio of the extrusion hole are selected. The specific parameters are listed in Table 1. Comparing different spinnerets in the same coagulation bath forming conditions, the coagulation bath temperature is 2°C, the coagulation bath concentration is 12.5%, and the ratio of extrusion speed to traction roller speed is 1.8. The results are as follows:

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a colored special-shaped acrylic fiber as well as a preparation method and application thereof. The colored special-shaped acrylic fibers are composed of acrylic fibers and dye, wherein the acrylic fibers and the dye are combined through ionic bonds and hydrogen bonds, wherein the viscosity-average molecular weight of the acrylic fibers is 45,000-65,000, and the acrylic fibers are polyacrylonitrile polymers with the acrylonitrile content larger than 80 wt%. The colored special-shaped acrylic fibers disclosed by the invention have flat fiber performance, relatively high washing color fastness (greater than or equal to grade 4) and relatively low lustring temperature, so that post-dyeing of the special-shaped fibers is avoided, the environmental pollution is reduced, and a wide application prospect is provided; and the preparation process is simple, environmentally friendly and convenient and flexible to operate.

Description

technical field [0001] The invention relates to the technical field of acrylic fiber manufacturing, in particular to a colored special-shaped acrylic fiber with convenient operation, safety and environmental protection, high gloss and color fastness to washing, and a preparation method and application thereof. Background technique [0002] The production of special-shaped fibers in China is mainly based on flat fibers. Flat acrylic fiber has special luster, bulkiness and anti-pilling performance, and has good post-processing effect. [0003] Chinese patent CN01126748.8 "A method for preparing colored acrylic fibers by dope coloring method" discloses a method for producing colored acrylic fibers using NaSCN wet spinning process and dope coloring method, including the following steps: 1) adding pigment and dispersant Prepare a uniform color paste with NaSCN aqueous solution, the concentration of NaSCN aqueous solution is the same as that used in the preparation of spinning st...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D01F6/38D01F11/06
CPCD01F6/38D01F11/06
Inventor 杨雪红张超锋路金奎赵丹贤俞玉芳
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com