Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multi-structure synergistically-enhanced thermal insulation aerogel/polymer composite material and preparation method thereof

A technology of composite materials and thermoplastic polymers, applied in the direction of conjugated synthetic polymer rayon, physical treatment, rayon manufacturing, etc., can solve the problem of low mechanical strength of airgel composite fibers and poor bonding between the skin layer and the core layer interface , affect the thermal insulation effect and other issues, to achieve the effect of enhancing the thermal insulation effect, increasing the airgel content, and improving the thermal insulation effect

Active Publication Date: 2021-04-30
佛山市维晨科技有限公司
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the airgel composite fiber prepared in this way completely covers the airgel particles in the skin layer. Although the problem of airgel shedding is solved, the airgel particles are easy to agglomerate in the skin layer and become trapped in the polymer. Movement in the pores formed by the material leads to uneven distribution of airgel, which affects the thermal insulation effect
In addition, in this patent, the airgel particles and the polymer material are squeezed into the spinneret hole through the conduit structure, and the composite is only carried out at the end of the spinneret hole. It is difficult for the airgel particles to be fully mixed with the polymer material, resulting in a gap between the skin layer and the core layer. The interface binding effect is poor, and the mechanical strength of the obtained airgel composite fiber is low, which is difficult to meet the needs of practical applications

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-structure synergistically-enhanced thermal insulation aerogel/polymer composite material and preparation method thereof
  • Multi-structure synergistically-enhanced thermal insulation aerogel/polymer composite material and preparation method thereof
  • Multi-structure synergistically-enhanced thermal insulation aerogel/polymer composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The invention provides a method for preparing a thermal insulation airgel / polymer composite material synergistically reinforced by multiple structures, comprising the following steps:

[0030] S1. After uniformly mixing the first thermoplastic polymer and the airgel powder according to a preset mass ratio, a mixed material is obtained;

[0031] S2, using the mixed material obtained in step S1 as a skin layer, and using the second thermoplastic polymer as a core layer to prepare an airgel / polymer composite fiber with a skin-core structure;

[0032] S3. Perform plasma treatment on the airgel / polymer composite fiber obtained in step S2 to obtain an airgel / polymer composite fiber with a highly rough surface;

[0033] S4. Processing the airgel / polymer composite fiber with a highly rough surface obtained in step S3 into a non-woven fabric to obtain a thermal insulation airgel / polymer composite material synergistically reinforced by multiple structures.

[0034]In step S1, th...

Embodiment 1

[0041] This embodiment provides a method for preparing a thermal insulation airgel / polymer composite material synergistically reinforced by multiple structures, including the following steps:

[0042] S1. After uniformly mixing polypropylene and silica airgel powder according to the mass ratio of 70:30, a mixed material is obtained.

[0043] S2, using the mixed material obtained in step S1 as a cortex, and polyethylene as a core layer, controlling the mass ratio of the cortex to the core layer to be 1:1, and preparing a cross-section radially by a two-component sheath-core composite spinning machine The airgel / polymer composite fiber with the core-skin structure; the airgel / polymer composite fiber with the core-skin structure has a diameter of 100 μm and a detex number of 200 dtex.

[0044] S3, using air as the plasma treatment gas, setting the treatment power to 400W, and the treatment time to 30s, performing plasma treatment on the airgel / polymer composite fiber obtained in ...

Embodiment 2～7

[0047] Examples 2 to 7 respectively provide a method for preparing a multi-component structure synergistically reinforced thermal insulation airgel / polymer composite material. Compared with Example 1, the difference is that the steps in Step S1 and Step S2 are changed. The mass ratio of raw materials or the plasma treatment parameters in step S3, and other steps are consistent with those in Embodiment 1, and will not be repeated here. The raw material mass ratios and process parameters corresponding to each embodiment are shown in Table 1.

[0048] Table 1 Embodiment 2~7 corresponding raw material mass ratio and process parameter

[0049]

[0050] The properties of the airgel / polymer composites prepared in Examples 1-7 were tested, and the results are shown in Table 2.

[0051] The performance of the airgel / polymer composite material that table 2 embodiment 1~7 prepares

[0052]

[0053]

[0054] It can be seen from Table 2 that the increase in the proportion of air...

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
Diameteraaaaaaaaaa
Apertureaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a multi-structure synergistically-enhanced thermal insulation aerogel / polymer composite material and a preparation method thereof. Aerogel / polymer composite fibers with skin-core structures are prepared by taking a mixture of a first thermoplastic polymer and aerogel powder as skin layers and taking a second thermoplastic polymer as core layers; and the aerogel / polymer composite fibers with the skin-core structures are subjected to plasma treatment and then processed into non-woven fabric, and thus the multi-structure synergistically-enhanced thermal insulation aerogel / polymer composite material. By means of the mode, the synergistic effect of the skin layers and the core layers in the aerogel / polymer composite fibers with the skin-core structures can be utilized, so that the multi-structure synergistically-enhanced thermal insulation aerogel / polymer composite material has high mechanical strength and good heat preservation and insulation performance; and the synergistic effect of the skin-core structures, highly rough surface structures and highly fluffy stacked structures in the aerogel / polymer composite material can be utilized to achieve excellent heat preservation and heat insulation effects, thereby satisfying the requirements of practical application.

Description

technical field [0001] The invention relates to the technical field of airgel composite materials, in particular to a heat-preserving and heat-insulating airgel / polymer composite material synergistically reinforced by multiple structures and a preparation method thereof. Background technique [0002] Airgel is a lightweight porous solid material obtained by replacing the internal liquid with air without changing the volume of hydrogel (wet gel), which has extremely high porosity and rich surface chemical groups. Therefore, it has a very wide range of applications in thermal insulation, catalysis, biochemistry and other fields. [0003] At present, there are thermal insulation materials prepared on the basis of airgel on the market, but most of these materials use coating, surface coating or intermediate interlayer to load airgel on textile materials, high-temperature equipment or building exterior walls and other substrate surfaces, so as to achieve the effect of thermal in...

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): D04H1/4382D04H1/541D04H1/492D04H1/56D04H3/147D01F1/10D01F8/06D06M10/02
CPCD04H1/4382D04H1/541D04H1/492D04H1/56D04H3/147D01F8/06D01F1/10D06M10/025
Inventor 王栋王文李沐芳
Owner 佛山市维晨科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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