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Acrylic fiber, staple yarn comprising same, and knitted fabric

A technology of acrylic fibers and knitted fabrics, applied in knitting, fiber treatment, weft knitting, etc., can solve the problems of reduced commerciality and damage to appearance, and achieve excellent anti-pilling, ultraviolet shielding performance and excellent anti-pilling , Excellent UV shielding effect

Pending Publication Date: 2022-04-08
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the woven and knitted fabrics of acrylic fiber tend to be entangled with fuzz, short hair, etc. on the surface, resulting in pilling, which significantly impairs the appearance and lowers the commerciality.

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
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  • Acrylic fiber, staple yarn comprising same, and knitted fabric
  • Acrylic fiber, staple yarn comprising same, and knitted fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] A copolymer composed of 93% by mass of acrylonitrile units and 7% by mass of vinyl acetate units was obtained by aqueous suspension polymerization. The reduced viscosity at 25° C. of a 0.5% by mass dimethylformamide solution of this copolymer was 2.0.

[0098] This copolymer was dissolved in dimethylacetamide to obtain an acrylonitrile copolymer solution having a copolymer concentration of 24% by mass. A dispersion containing and dispersing 20% ​​by mass of titanium hexoxide with an average particle diameter of 0.6 μm in dimethylacetamide was added to the acrylic fiber so that the content of titanium oxide in the final acrylic fiber was 1.7% by mass. Nitrile copolymer solution to make spinning dope.

[0099] The above-mentioned spinning stock solution was adjusted to 75°C, and extruded from an equilateral triangle-shaped discharge hole of 80 μm on one side into a coagulation solution of 35% by mass of dimethylacetamide and a temperature of 40°C for wet spinning, follow...

Embodiment 2～5

[0110] The fiber obtained in Example 1 is cut into 38mm, and according to the mixing ratio recorded in Table 2, it is spun into 30 / 2 spun yarn in terms of cotton yarn count by spinning through 2 inches, and it is braided using a 14-gauge circular knitting machine After forming a plain stitch, it is dyed with off-white by conventional methods, and the weight per unit area is 250g / m 2 of knitted fabrics.

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Abstract

The present invention provides an acrylic fiber having a triangular cross-sectional shape and having excellent ultraviolet shielding performance and pilling resistance, and provides a knitted fabric including the fiber and having excellent ultraviolet shielding performance and pilling resistance. Provided is an acrylic fiber having a triangular cross-sectional shape and a titanium oxide content of 0.3-1.9% by mass (inclusive). It is preferable that the acrylic fiber is composed of 90-98 mass% of acrylonitrile units and 2-10 mass% of vinyl monomer units, the product (K product) of knot strength and knot elongation is 10-35, and the titanium oxide has a primary particle diameter of 0.1-1.0 [mu] m.

Description

technical field [0001] The present invention relates to acrylic fibers, spun yarns and knitted fabrics containing the fibers. Background technique [0002] Compared with other synthetic fibers in the past, acrylic fiber exhibits soft feel, heat retention, bulkiness, and excellent heat retention that are most similar to wool, and is widely used for clothing such as sweaters and interior decoration such as carpets. However, the woven and knitted fabrics of acrylic fibers tend to be entangled with fuzz, short hairs, etc. on the surface to generate pills called pilling, which significantly impairs the appearance and lowers the commerciality. Against such a background, many proposals have been made to prevent the occurrence of pilling. [0003] For example, a kind of acrylic fiber is proposed in Patent Document 1, by 94.0% by mass or more of acrylonitrile units, 4.0 to 5.8% by mass of vinyl monomer units other than acrylonitrile units, and 0.2 to 2.0% by mass of Composed of vin...

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 Applications(China)
IPC IPC(8): D01F6/54D01F1/10D02G3/02D02G3/04D02G3/44D01D5/253D04B1/14D04B1/16
CPCD01F6/18D01F6/38D01F6/54D04B1/16
Inventor 稻垣达彦小野原透雄藤江正树中西志茉
Owner MITSUBISHI CHEM CORP
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