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Preparation method of polyether sulfone short fibers

The technology of polyethersulfone fiber and polyethersulfone is applied in the field of preparation of polyethersulfone short fiber, which can solve the problems of high elongation at break, poor elastic modulus and breaking strength index, low breaking strength of filter material, etc. Achieve the effect of low elongation at break, reduced elongation at break, and high breaking strength

Active Publication Date: 2020-07-03
辽宁欧瑞康环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of polyethersulfone short fibers to solve technical problems such as poor elastic modulus and breaking strength index and low breaking strength and high elongation at break of the filter material made of the short fibers.

Method used

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  • Preparation method of polyether sulfone short fibers
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  • Preparation method of polyether sulfone short fibers

Examples

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Effect test

Embodiment 1

[0032] A kind of preparation method of polyethersulfone staple fiber, polyethersulfone resin is first melt-spun to make polyethersulfone fiber, then cut to make polyethersulfone staple fiber of 10mm; Wherein, by weight, the polyethersulfone The preparation method of sulfone resin is as follows:

[0033] (1) Pour bisphenol S into 8 times the mass concentration of 30% potassium hydroxide aqueous solution, ultrasonic vibration treatment, and centrifugation to obtain pretreated bisphenol S;

[0034] (2) Then, add 1600 parts of diphenyl sulfone into the nitrogen-protected reactor, stir and heat up to 60°C, add 100 parts of pretreated bisphenol S and 280 parts of 4,4'-dichlorodiphenyl sulfone monomer, wait After the monomers are completely dissolved, add 55 parts of potassium hydroxide and 50 parts of toluene, continue to stir and heat up to 170°C, add distilled water drop by drop until all solid insolubles in the system are dissolved, stir for 40 minutes, and then add 135 parts of ...

Embodiment 2

[0050] A kind of preparation method of polyethersulfone staple fiber, polyethersulfone resin is melt-spun to make polyethersulfone fiber first, then cut to make polyethersulfone staple fiber of 15mm; Wherein, by weight part, described polyethersulfone The preparation method of sulfone resin is as follows:

[0051] (1) Pour bisphenol S into a 40% potassium hydroxide aqueous solution with a mass concentration of 5 times the weight, perform ultrasonic vibration treatment, and centrifuge to obtain pretreated bisphenol S;

[0052] (2) Then, add 1500 parts of diphenyl sulfone into the reaction kettle protected by nitrogen, stir and heat up to 70°C, add 80 parts of pretreated bisphenol S and 280 parts of 4,4'-dichlorodiphenyl sulfone monomer, wait After the monomer is completely dissolved, add 58 parts of potassium hydroxide and 40 parts of toluene, continue to stir and heat up to 190°C, add distilled water drop by drop until all solid insolubles in the system are dissolved, stir for...

Embodiment 3

[0068] A kind of preparation method of polyethersulfone short fiber, polyethersulfone resin is melt-spun to make polyethersulfone fiber first, cut and make the polyethersulfone short fiber of 12mm then; Wherein, by weight, described polyether sulfone The preparation method of sulfone resin is as follows:

[0069] (1) Pour bisphenol S into a 35% potassium hydroxide aqueous solution with a mass concentration of 6 times the weight, perform ultrasonic vibration treatment, and centrifuge to obtain pretreated bisphenol S;

[0070] (2) Then, add 1550 parts of diphenyl sulfone into the nitrogen-protected reaction kettle, stir and heat up to 65°C, add 90 parts of pretreated bisphenol S and 280 parts of 4,4'-dichlorodiphenyl sulfone monomer, wait After the monomers are completely dissolved, add 57 parts of potassium hydroxide and 45 parts of toluene, continue to stir and heat up to 180°C, add distilled water drop by drop until all solid insolubles in the system are dissolved, stir for 3...

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Abstract

The invention provides a preparation method of polyether sulfone short fibers, The preparation method of the polyether sulfone short fibers comprises the follow steps that polyether sulfone resin is used for melting the spinning to prepare polyether sulfone fibers, and the polyether sulfone fibers are cut to prepare the polyether sulfone short fibers having a diameter of 10-15 mm, the polyether sulfone short fibers are obtained by polymerizing bisphenol 4, 4 '-dichlorodiphenyl sulfone monomer serving as a raw material, bisphenol S is pretreated firstly, a step-by-step feeding method is adoptedin the polymerization process, acrylamide polymerization and poly-phenylene terephthamide are introduced, and the elastic modulus and breaking strength of the obtained polyether sulfone short fibersare greatly improved, a filter material prepared from the polyether sulfone short fibers is high in breaking strength and low in elongation at break, and meets the technical requirements of a non-woven filter material.

Description

technical field [0001] The invention relates to the technical field of fiber filter materials, in particular to a preparation method of polyethersulfone short fibers. Background technique [0002] The mechanical properties of polyethersulfone are the highest among thermoplastics, such as tensile strength of 84.3MPa, flexural modulus of 2.65Gpa, elongation at break of 5-6%, and notched impact strength of 91J / m. Because polyethersulfone has excellent high temperature resistance, it can be used for a long time under the condition of 180 ~ 200 ℃, and has good flame retardancy, so people use polyethersulfone fiber non-woven fabric as filter material, which can meet the high temperature filtration requirements , such as high temperature dust filtration. In order to improve the service life of the filter material, people bond the polyethersulfone superfine fiber and the base layer, but this bond is not firm, and it is easy to fall off during use, resulting in a greatly shortened s...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/10C08G75/23D01D5/08D01D5/088D01D5/16D01D10/02
CPCD01F6/94D01F1/10C08G75/23D01D5/08D01D5/088D01D5/16D01D10/02
Inventor 廖国庆
Owner 辽宁欧瑞康环境技术有限公司
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