PREPARATION METHOD FOR LONG CONTINUOUS ELECTROSPUN POLYACRYLONITRILE NANOFIBER YARN, AND APPLICATION THEREOF

Title:

PREPARATION METHOD FOR LONG CONTINUOUS ELECTROSPUN POLYACRYLONITRILE NANOFIBER YARN, AND APPLICATION THEREOF

Document Type and Number:

WIPO Patent Application WO/2020/232931

Kind Code:

A1

Abstract:

A preparation method for a long continuous electrospun polyacrylonitrile nanofiber yarn, comprising the following steps: a. dissolving a polyacrylonitrile raw material into a polar solvent in mechanical stirring to obtain a uniform spinning solution; b. preparing the polyacrylonitrile solution in step a into a polyacrylonitrile non-woven fabric in an electrospinning machine; c. slitting the non-woven fabric in step b into elongated strips having a width of 0.5-6 cm; d. drawing the elongated strips in step c in a water bath at 80-95ºC at a draw ratio of 2-5 times, and then drawing same in air at 110-150ºC at a draw ratio of 3-10 times to obtain a fiber bundle having a highly oriented inner fiber; and e. twisting the fiber bundle in step d to obtain a long continuous electrospun polyacrylonitrile nanofiber yarn having a length of not less than 2,000 m.

Inventors:

HOU HAOQING (CN)
OUYANG WEN (CN)
WANG YUMING (CN)
CHENG CHUYUN (CN)
WANG QI (CN)
LV XIAOYI (CN)

Application Number:

PCT/CN2019/106959

Publication Date:

November 26, 2020

Filing Date:

September 20, 2019

Export Citation:

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Assignee:

JIANGXI ADVANCED NANOFIBER S&T CO LTD (CN)

International Classes:

D02G3/02; D01D5/42; D01D10/02; D02G3/26; D04H3/007; D04H3/033

Domestic Patent References:

WO2005073442A1

2005-08-11

Foreign References:

CN104947211A	2015-09-30
CN107858780A	2018-03-30
CN103132194A	2013-06-05
US20160298265A1	2016-10-13
CN105603561A	2016-05-25
CN107503000A	2017-12-22
CN107841808A	2018-03-27
CN110144649A	2019-08-20
CN110079903A	2019-08-02
CN110129934A	2019-08-16

Other References: