Title:
CONTINUOUS SIO2 AEROGEL COMPOSITE FIBER, AND PREPARATION METHOD THEREFOR AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/041439
Kind Code:
A1
Abstract:
The present invention belongs to the technical field of composite material preparation, and discloses a continuous SiO2 aerogel composite fiber, and a preparation method therefor and the use thereof. The preparation method comprises: S1, mixing a silicon source, ethanol and water until uniform, slowly adding, in a dropwise manner, an acidic catalyst until the pH is 3, stirring the resulting mixture for 1.5-2 h, and leaving same to stand for 2-3 h to obtain an SiO2 aerogel precursor solution; S2, adding a high-molecular-weight thermosetting phenolic resin solution, adding, in a dropwise manner, a basic catalyst while stirring at a low speed until the pH is 6-7, leaving same to stand for 2-3 h, and subjecting same as a spinning solution to wet spinning to obtain an as-spun filament; and S3, subjecting the as-spun filament to hydrophobic modification, then soaking same in n-hexane for 12-24 h, taking same out, and drying same to obtain a continuous SiO2 aerogel composite fiber. The continuous SiO2 aerogel composite fiber has good thermal insulation performance and flame retardant performance, also has good flexibility and strength, and can be applied to the preparation of heat preservation and thermal insulation materials or flame retardant materials.
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Inventors:
ZHANG WEI (CN)
HU JIALI (CN)
WEI FAYUN (CN)
DAI JIAMU (CN)
WANG HAILOU (CN)
LI DAWEI (CN)
HU JIALI (CN)
WEI FAYUN (CN)
DAI JIAMU (CN)
WANG HAILOU (CN)
LI DAWEI (CN)
Application Number:
PCT/CN2023/113474
Publication Date:
February 29, 2024
Filing Date:
August 17, 2023
Export Citation:
Assignee:
UNIV NANTONG (CN)
International Classes:
C04B26/12; A41D27/02; A41D31/06; A41D31/08; D01D5/06
Domestic Patent References:
| WO2013007600A1 | 2013-01-17 |
Foreign References:
| CN115417620A | 2022-12-02 | |||
| CN109023941A | 2018-12-18 | |||
| CN112723362A | 2021-04-30 | |||
| CN113402252A | 2021-09-17 | |||
| CN102531521A | 2012-07-04 | |||
| CN105463603A | 2016-04-06 | |||
| CN108569912A | 2018-09-25 | |||
| US20210332586A1 | 2021-10-28 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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