Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Secondary composite preparation method of aerogel pre-oxidized fiber felt

A technology of airgel pre-oxygenated silk felt and pre-oxygenated silk felt, which is applied in the direction of textiles, papermaking, fiber treatment, etc., can solve the problems of high production requirements, high equipment investment, complex process, etc., and achieve low equipment requirements and low energy consumption. Low loss and good material properties

Pending Publication Date: 2022-05-06
欧普森(厦门)节能新材料科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the airgel prepared by the in-situ composite method has good performance, the method takes a long time, the process is complicated, the equipment investment is high, and the production requirements of the enterprise are high.

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of airgel pre-oxygenated silk felt:

[0032] 1) Mix 30 parts of airgel slurry, 5 parts of dispersion, 2 parts of opacifier, 62 parts of industrial ethanol, and 30 parts of water to obtain airgel slurry;

[0033] 2) impregnating the pre-oxygenated silk felt into the airgel slurry, and extruding by extrusion rollers to make the components of the pre-oxygenated silk felt absorb the airgel mixed slurry, so as to obtain the airgel pre-oxygenated silk wet felt;

[0034] 3) Dry the pre-oxidized silk felt at 80°C for 2 hours, and after drying the moisture, heat-press the obtained felt once under a hot roller press at 180°C to obtain the airgel pre-oxidized silk felt.

[0035] 4) Optionally, prepare a sealing agent by mixing 0.06 parts of curing agent, 15 parts of water, and 30 parts of silica sol, and then dry at 80°C for 1 hour to obtain a completely dust-free airgel pre-oxidized silk felt.

[0036] The thermal conductivity of airgel pre-oxidized ...

Embodiment 2

[0038] A kind of preparation method of airgel pre-oxygenated silk felt:

[0039] 1) Mix 40 parts of airgel slurry, 6 parts of dispersion, 3 parts of opacifier, 60 parts of industrial ethanol, and 35 parts of water to obtain airgel slurry;

[0040] 2) impregnating the pre-oxygenated silk felt into the airgel slurry, and extruding through extrusion rollers to make the pre-oxygenated silk felt fully absorb the airgel mixed slurry to obtain an airgel pre-oxygenated silk wet felt;

[0041] 3) Dry the pre-oxidized silk felt at 60°C for 3 hours, and after drying the water, heat-press the obtained felt once under a hot roller press at 200°C to obtain the airgel pre-oxidized silk felt.

[0042] 4) Optionally, prepare a sealing agent by mixing 0.08 parts of curing agent, 25 parts of water, and 40 parts of silica sol, and then dry at 60°C for 1.5 hours to obtain a completely dust-free airgel pre-oxidized silk felt.

[0043] The thermal conductivity of airgel pre-oxidized wire felt witho...

Embodiment 3

[0045] A kind of preparation method of airgel pre-oxygenated silk felt:

[0046] 1) Mix 38 parts of airgel slurry, 4.5 parts of dispersion, 2.5 parts of opacifier, 55 parts of industrial ethanol, and 20 parts of water to obtain airgel slurry;

[0047] 2) Immersing the pre-oxygenated silk mat into the airgel slurry, and squeezing the pre-oxygenated silk mat by extrusion rollers to fully absorb the airgel mixed slurry to obtain an airgel pre-oxidized silk mat.

[0048] 3) Dry the pre-oxidized silk felt at 70°C for 2.5 hours. After drying the moisture, heat-press the obtained felt once under a hot roller press at 150°C to obtain the airgel pre-oxidized silk felt.

[0049]4) Optionally, prepare a sealing agent by mixing 0.1 parts of curing agent, 30 parts of water, and 20 parts of silica sol, and then dry at 60°C for 1.5 hours to obtain a completely dust-free airgel pre-oxidized silk felt.

[0050] The thermal conductivity of airgel pre-oxidized wire felt without sealing coating ...

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
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Thermal conductivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to an aerogel pre-oxidized fiber felt secondary composite preparation method, which comprises: 1) uniformly mixing an aerogel slurry, a dispersion, an opacifying agent and a solvent to obtain an aerogel slurry; (2) dipping a pre-oxidized fiber felt into the aerogel slurry, and extruding through an extrusion roller to enable the pre-oxidized fiber felt to fully absorb the aerogel mixed slurry, so as to obtain an aerogel pre-oxidized fiber wet felt; and 3) drying and hot-pressing the aerogel pre-oxidized fiber wet felt to obtain the aerogel pre-oxidized fiber felt. According to the method, the problems of long flow, long time consumption, high equipment requirement and high operation difficulty in an in-situ compounding process can be solved, and the obtained aerogel pre-oxidized fiber felt has relatively good heat insulation performance; and when the sealing coating is used for sealing, complete zero dust can be realized.

Description

technical field [0001] The invention relates to an airgel composite material, in particular to a secondary composite preparation method of an airgel pre-oxygenated silk mat. Background technique [0002] Airgel is a nanoporous material with a three-dimensional structure. It is the material with the lowest thermal conductivity so far. It also has properties such as low density, high porosity, high light transmittance, and high specific surface area. However, pure aerogels have the problems of brittle skeleton, low mechanical strength, and poor toughness. In practical applications, the mechanical strength of aerogels is improved by composite reinforcements. [0003] Pre-oxidized filament is an important intermediate product in the process of preparing carbon fiber. Its chemical resistance is also better than that of synthetic fiber, and it is an excellent reinforcement. This method combines airgel with pre-oxygenated silk, so that the airgel pre-oxygenated silk felt has the u...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D06M11/79D06M11/46D06M11/45
CPCD06M11/79D06M11/46D06M11/45
Inventor 陈耀森陈泽清朱晓青
Owner 欧普森(厦门)节能新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com