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Title:
SPINNING STOCK SOLUTION, AND HEAT-RESISTANT CREEP-RESISTANT FIBER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/156215
Kind Code:
A1
Abstract:
The invention relates to a spinning stock solution, and a heat-resistant and creep-resistant fiber and a preparation method therefor. The spinning stock solution comprises polyethylene, a solvent and a photoinitiator. The amount of the photoinitiator is 0.2 wt% -10 wt% of the mass of polyethylene. The method comprises: performing gel spinning and multi-stage drafting on a spinning stock solution to obtain a polyethylene fiber; and then performing ultraviolet irradiation by means of an ultraviolet light source to obtain a heat-resistant and creep-resistant polyethylene fiber. The light intensity of the ultraviolet light source is 100mW/cm 2 - 5000mW/cm 2. The ultraviolet irradiation time is 10s - 600s. The heat-resistant and creep-resistant polyethylene fiber has a gel content of 20wt% - 100wt% and a crystallinity of 50wt% - 90wt%. Under a temperature of 70°C and a load of 300Mpa, the creep rate of the fiber is 10 -8s -1 - 10 -7s -1. Under a load of 15MPa and a temperature increase rate of 2°C/min, the breaking temperature of the fiber is 155°C - 245°C. The present method is simple and easy to implement, and has a wide range of applications.

Inventors:
HE YONG (CN)
GUO ZIXIAN (CN)
GUO JUNGU (CN)
GUO YADONG (CN)
WANG XINPENG (CN)
XIANG CHAOYANG (CN)
WANG YIMIN (CN)
NI JIANHUA (CN)
Application Number:
PCT/CN2021/114899
Publication Date:
July 28, 2022
Filing Date:
August 27, 2021
Export Citation:
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Assignee:
UNIV DONGHUA (CN)
JIANGSU LIU JIA TECH COMPANY LTD (CN)
International Classes:
D01F6/46; D01D5/04; D01F11/04
Foreign References:
CN104695038A2015-06-10
JPH02175914A1990-07-09
CN104711696A2015-06-17
CN104818541A2015-08-05
JPH02175913A1990-07-09
CN109251389A2019-01-22
CN110922515A2020-03-27
CN102965748A2013-03-13
CN1431358A2003-07-23
CN105063787A2015-11-18
CN103741247A2014-04-23
Attorney, Agent or Firm:
TONGSHE INTELLECTUAL PROPERTY AGENCY (CN)
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