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Polyaryletherketone fiber, non-woven fabric and preparation method and application thereof

A technology of polyaryletherketone and non-woven fabric, which is applied in the field of polyaryletherketone fiber and its preparation, can solve the problems of thick fiber, high cost, and different processing methods, and achieve fine fiber, high strength and good filtering effect Effect

Pending Publication Date: 2022-03-11
厦门当盛新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyaryletherketone fiber is mainly prepared by melt spinning method, which needs to be stretched, crimped and cut at high temperature, which is expensive and the formed fiber is relatively thick
[0006] In addition, polyphenylene sulfide and polyaryletherketone have huge differences in chemical structure, resulting in great differences in processing methods between the two
Therefore, those skilled in the art have no motivation to adopt the flash spinning method of polyphenylene sulfide to prepare polyaryletherketone fibers

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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  • Polyaryletherketone fiber, non-woven fabric and preparation method and application thereof
  • Polyaryletherketone fiber, non-woven fabric and preparation method and application thereof

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preparation example Construction

[0027] The preparation method of the polyaryletherketone fiber of the present invention comprises the following steps: (1) the step of preparing spinning dope; (2) the step of preparing fiber.

[0028] Steps for preparing spinning dope

[0029] The polyaryletherketone is dissolved in a solvent to form a spinning dope. The dissolution temperature may be 250-500°C; preferably 300-400°C; more preferably 330-370°C. The dissolution pressure may be 1-50 MPa; preferably 5-40 MPa; more preferably 7-20 MPa.

[0030] The polyaryletherketone and the solvent can be mixed under stirring to form a spinning dope. The stirring speed may be 80-200 rpm; preferably 100-150 rpm; more preferably 110-130 rpm. The mixing time can be 1~20h; preferably 2~10h; more preferably 3~5h. Using the above conditions, the polyaryletherketone can be fully dissolved in the solvent to form a spinning dope with good uniformity, thereby increasing the strength of the fiber.

[0031] The content of polyarylethe...

Embodiment 1～3

[0056] Put polyether ether ketone and carbon tetrachloride in a high-pressure reactor, and mix them for 3 hours at a temperature of 350 °C, a pressure of 10 MPa, and a stirring speed of 120 rpm to obtain a spinning stock solution with a polyether ether ketone concentration of 3 wt%. .

[0057] The spinning stock solution is sprayed out from the spinneret of the flash spinning equipment, and the carbon tetrachloride in the spinning stock solution evaporates instantly to obtain polyether ether ketone fibers.

[0058] The polyetheretherketone fibers are formed into a fiber web on the accumulating belt, and the fiber web is hot-rolled by rollers to form a polyaryletherketone nonwoven fabric.

[0059] The specific parameters are shown in Table 1. The properties of fibers and non-woven fabrics are shown in Table 1.

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Abstract

The invention discloses a polyaryletherketone fiber, a non-woven fabric and a preparation method and application of the polyaryletherketone fiber and the non-woven fabric. The preparation method of the polyaryletherketone fiber comprises the following steps: (1) dissolving polyaryletherketone in a solvent under the conditions that the temperature is 250-500 DEG C and the pressure is 1-50MPa, so as to form a spinning solution with the polyaryletherketone content of 0.5-10wt%; and (2) spraying the spinning solution from a spinning nozzle of the flash spinning equipment, and evaporating the solvent in the spinning solution to obtain the polyaryletherketone fiber. The polyaryletherketone fiber obtained by the method is small in diameter and high in strength, and the non-woven fabric formed by the polyaryletherketone fiber is good in filtering effect.

Description

technical field [0001] The invention relates to a polyaryletherketone fiber and a preparation method thereof, and also relates to a polyaryletherketone nonwoven fabric, a preparation method and application thereof. Background technique [0002] Flash spinning is a spinning method in which the polymer solution is above the boiling point of the solvent and extruded through the spinneret under high pressure to reach normal pressure. Due to the sudden drop in pressure during spinning, the solvent evaporates sharply, and the polymer is re-solidified into fibers, forming a network-like fiber composed of single fibers. The fibers are collected, conveyed and hot-rolled to form non-woven fabrics. [0003] The polymer raw materials that are formed into fibers by the flash evaporation process are mainly polyolefins with relatively regular structures, such as polyethylene, polypropylene, polymethylpentene, etc. CN113005543A discloses a kind of flash spinning method, comprises the step...

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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IPC IPC(8): D01F6/66D01D5/11D04H3/009D04H3/14
CPCD01F6/665D01D5/11D04H3/14D04H3/009
Inventor 罗章生
Owner 厦门当盛新材料有限公司
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