Silicon dioxide aerogel composite material and molding method

A composite material and molding method technology, applied in the field of aerogel, can solve the problems of powder loss and single product, and achieve the effects of high compressive strength, good high temperature resistance and low thermal conductivity

Active Publication Date: 2013-09-18
陕西盟创纳米新型材料有限责任公司
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relevant documents disclose a glass fiber reinforced airgel board and felt, which have a certain strength due to their specific shape, but due to the use of glass fiber as a reinforcing material, the molding of the product is limited, and the product is relatively It is single and has powder falling phenomenon, so it is of great significance to find a new reinforcing material to prepare various molded products

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

[0019] 1) Set the density to 100kg / m 3 The powder of expanded perlite passing through a 80-mesh sieve is placed in a 400°C debinding furnace and baked for one hour, and the particles are cooled to room temperature as component A for later use;

[0020] 2) According to the volume ratio, stir and mix 99% industrial alcohol 100ml, tetraethyl orthosilicate 30ml, water 1.5ml, and ammonia water 1.5ml as component B for later use;

[0021] 3) Mix 100ml of component A with 100ml of component B at a stirring speed of 50 rpm to form a plastic paste, place the paste in a stainless steel box with a length of 100mm x width of 100mm x height of 10mm to shape and seal it Aging the gel, the aging time is about 2 hours. Release the mold, place the gel molded body in an autoclave, adjust the temperature to 243° C., and dry it at a pressure of 7.5 MPa for 4 hours. After the equipment drops to normal temperature and pressure, open the kettle and take out the product.

[0022] Measure its relev...

Embodiment 2

[0024] 1) Set the density to 100kg / m 3 The powder of expanded perlite passing through a 80-mesh sieve is placed in a 400°C debinding furnace and baked for one hour, and the particles are cooled to room temperature as component A for later use;

[0025] 2) According to the volume ratio, stir and mix 100ml of 99% industrial alcohol, 40ml of tetraethyl orthosilicate, 2ml of water, and 2ml of ammonia water as component B for later use;

[0026] 3) Take 200ml of component A and 100ml of component B, mix and stir at a speed of 100 rpm to form a plastic paste, place the paste in a glass box with a length of 300mm x width of 300mm x height of 30mm to shape and airtight The gel is aged for about 5 hours. Release the mold, place the gel molded body in an autoclave, adjust the temperature to 243° C., and dry it at a pressure of 7.5 MPa for 12 hours. After the equipment drops to normal temperature and pressure, open the kettle and take out the product.

[0027] Measure its relevant dat...

Embodiment 3

[0029] 1) Set the density to 100kg / m 3 The powder of expanded perlite passing through a 80-mesh sieve is placed in a 400°C debinding furnace and baked for one hour, and the particles are cooled to room temperature as component A for later use;

[0030] 2) According to the volume ratio, stir and mix 100ml of 99% industrial alcohol, 50ml of tetraethyl orthosilicate, 2.5ml of water, and 2.5ml of ammonia water as component B for later use;

[0031] 3) Mix 300ml of component A and 100ml of component B to form a plastic paste, place the paste in a stainless steel box with a length of 600mm×width 600mm×height 50mm and seal it to age the gel , the aging time is about 10 hours. Release the mold, place the gel molded body in an autoclave, adjust the temperature to 243° C., and dry it at a pressure of 7.5 MPa for 20 hours. After the equipment drops to normal temperature and pressure, open the kettle and take out the product.

[0032] Measure its relevant data: density 200kg / m 3 , Cla...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a silicon dioxide aerogel composite material. The silicon dioxide aerogel composite material comprises an ingredient A and an ingredient B at a volume ratio of (1-3);1, wherein the ingredient A is an expanded perlite powder which is at the density of 100kg/m3 and obtained by passing through a 80-mesh sieve. The expanded perlite is added into the ingredients of the existing silicon dioxide aerogel, and the aerogel composite material in a needed shape and with certain rigidness can be obtained by means of molding method-prepressing molding gel method. The silicon dioxide aerogel composite material enables the aerogel to be more widely used, and can be widely applied to the fields of thermal insulation, damping energy absorption and the like; not only can the original performance of the modified aerogel be more outstanding, but also the compounded composite material has more new functions; the composite material is high in compressive strength, and good in fire resistance, and also plays roles in anti-explosion and damping energy absorption.

Description

technical field [0001] The invention relates to a silica airgel composite material and a molding method, belonging to the field of airgel. Background technique [0002] Silica airgel is a new type of porous material with controllable structure, which has a variety of unique properties, such as low refractive index, low elastic modulus, low thermal conductivity, strong adsorption, typical fractal structure etc., can be made into various high-performance materials such as acoustic impedance coupling materials, filter materials, high-temperature heat insulation materials, etc., and have broad application prospects in many fields. [0003] In practical applications, silica airgel is usually used as a filling material in a powder state, and is filled into carriers such as heat insulation, noise reduction, shock absorption and energy absorption, adsorption, and catalyst. However, this airgel powder will reduce the performance of the airgel itself, and cannot well play the role of...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
Inventor 陈国杨建洲李仲谨张君
Owner 陕西盟创纳米新型材料有限责任公司
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap