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High melting point resin fibers and nonwoven fabric

A technology of resin fiber and high melting point, applied in the direction of melt spinning, fiber treatment, fiber chemical characteristics, etc., can solve the problems of unusable and difficult to obtain nanofibers, and achieve excellent heat resistance or chemical resistance, crystallinity Low cost and excellent workability

Active Publication Date: 2017-05-10
DAICEL CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Methods such as melt blowing are known as methods for converting these high-melting point resins into fibers (fibers), but the diameter of the fibers is several μ to several tens of μm, and it is difficult to obtain even finer nanofibers.
In addition, methods such as electrospinning are known as methods for obtaining even finer nanofibers, but as super engineering plastics with high melting points such as PEEK, many of them are insoluble in organic solvents and the like, so they cannot be used.

Method used

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  • High melting point resin fibers and nonwoven fabric
  • High melting point resin fibers and nonwoven fabric
  • High melting point resin fibers and nonwoven fabric

Examples

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Embodiment

[0122] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited by these examples.

[0123] (Production of polymer sheet)

[0124] Polymer sheets A to D were produced by the following method.

[0125] Use the T-die extrusion molding device (manufactured by Toyo Seiki Seisakusho Co., Ltd.) of the experimental plastic refining machine (Labo Plastomill), use a T-die with a mold width of 150 mm and a crack width of 0.4 mm, and extrude at an extrusion temperature of 345 to 360 ° C. Next, a chip-shaped sample of PEEK resin, which is the following high-melting point resin, is extruded into a sheet, and wound at a pulling roll temperature of 140°C and a winding speed of 1.0-2.0m / min to produce a high-melting high-melting sample with a thickness of 0.1mm. Molecular sheets A-D. The polymer sheets B, C, and D were heat-treated at 230° C. for 20 minutes after being formed by the extruder.

[0126] The crystallinity ...

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Abstract

A purpose of the present invention is to provide: high melting point resin fibers which have heat resistance, solvent resistance and excellent processability / formability, while having a diameter of 4 [mu]m or less; and a nonwoven fabric which is formed from the high melting point resin fibers. Another purpose of the present invention is to provide a method for efficiently producing high melting point resin fibers having a diameter of 4 [mu]m or less with use of a laser melt electrospinning method. High melting point resin fibers according to the present invention are formed from a resin having a melting point of 250 DEG C or more, and have a diameter of 4 [mu]m or less. It is preferable for the high melting point resin fibers according to the present invention that the resin having a melting point of 250 DEG C or more is PEEK and the crystallization degree thereof is 30% or less.

Description

technical field [0001] The present invention relates to a high-melting-point resin fiber and a non-woven fabric utilizing a melt-type electrospinning method. [0002] More specifically, it relates to a high-melting-point resin (film) processed into ultrafine fibers with a diameter of 4 μm or less by a melt-type electrospinning method (laser melting electrospinning method) using laser light as a heating means. Melting point resin fibers and non-woven fabrics made of high melting point resin fibers. This application claims the priority of Japanese Patent Application No. 2014-213828 filed in Japan on October 20, 2014, and uses the content here. Background technique [0003] In recent years, fibers having a fiber diameter of submicron or nanometer order have attracted attention from the viewpoint of enabling the development of novel materials that effectively utilize a large specific surface area and a fiber shape. As a method for producing such fibers, for example, an electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/76D01D5/08D04H1/728
CPCD04H1/728D01D5/08D01F6/76D01D5/0023D01D5/0092D01F6/665D04H3/016
Inventor 郑贵宽横山绫
Owner DAICEL CHEM IND LTD
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