Aerogel complex fiber thermal insulation material and preparation method thereof

A composite fiber and thermal insulation material technology, applied in thermal insulation, building components, etc., can solve problems such as low mechanical strength, limited operability and application, and poor toughness, and achieve high safety performance, superior thermal insulation performance, and long life.

Active Publication Date: 2014-09-17
SHANGHAI GUANFA MARINE BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low mechanical strength and poor toughness of pure airgel, this leads to poor dimensional stability of the airgel material and limits its operability and application in construction. How to improve the mechanical properties of airgel materials and realize their convenient use is an important issue at this stage based on the high thermal insulation performance of the airgel

Method used

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  • Aerogel complex fiber thermal insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation process of the airgel composite glass fiber insulation blanket of the present embodiment is as follows: figure 1 As shown, the specific steps are as follows:

[0029] (1) Coating process: put 1kg of glass fiber (fiber length 5mm, diameter 2μm) in a centrifuge to fully disperse to make it evenly dispersed; through an external spraying device, 0.5kg of the pre-prepared A-stage phenolic The resin adhesive is sprayed onto the surface of the glass fiber; then 3kg of prepared hydrophobic silica airgel particles (porosity greater than 80%, thermal conductivity less than 0.03w / m·k) are evenly sprayed onto the glass fiber in stages ; Spray the pre-prepared 0.05kg phthalic anhydride curing agent to the glass fiber surface covered by airgel particles again by an external spray device; in the above process, carry out under the constant working state of the stirring centrifuge;

[0030] (2) Curing molding process: Pour the airgel particle-coated glass fiber raw mate...

Embodiment 2

[0036] The preparation process of the airgel composite ceramic fiber insulation felt of the present embodiment is as follows: figure 1 As shown, the specific steps are as follows:

[0037] (1) Coating process: Place 5kg of ceramic fibers (fiber length 20mm, diameter 10μm) in a centrifuge and disperse them evenly; Spray the adhesive on the surface of the ceramic fiber; then spray the prepared 8kg hydrophobic silica airgel particles (porosity greater than 60%, thermal conductivity less than 0.03w / m·k) evenly on the inorganic fiber in stages; again Spray the pre-prepared 0.1kg trimethylchlorosilane curing agent on the surface of the ceramic fiber coated with airgel particles through an external spray device; in the above process, the stirring centrifuge is always working;

[0038](2) Curing molding process: Pour the airgel particle-coated ceramic fiber raw material prepared in the above process into the prefabricated mold, heat at 80°C, and pressurize 5000kN to make it solidify ...

Embodiment 3

[0044] The preparation process of the airgel composite rock wool fiber insulation board of the present embodiment is as follows: figure 1 As shown, the specific steps are as follows:

[0045] (1) Coating process: Put 10kg of rock wool fibers (50mm in length and 80μm in diameter) in a centrifuge to disperse them evenly; Spray the oxygen resin adhesive onto the surface of the inorganic fiber; then spray the prepared 1.25kg hydrophobic airgel particles (with a porosity greater than 60% and a thermal conductivity less than 0.03w / m·k) onto the rock wool fiber in stages; Spray the pre-prepared 0.0625kg of phthalic anhydride curing agent on the surface of the inorganic fiber coated with airgel particles through the external spraying equipment again; in the above process, it is carried out under the constant working state of the stirring centrifuge;

[0046] (2) Curing molding process: Pour the airgel particle-coated inorganic fiber raw material prepared in the above process into a p...

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Abstract

The invention discloses an aerogel complex fiber thermal insulation material and a preparation method thereof. The aerogel complex fiber thermal insulation material is formed by composite processing with SiO2 aerogel particles, inorganic fibers, an adhesive and a curing agent as raw material, and an insulation quilt, an insulation blanket and an insulation board can be formed; the preparation method of the aerogel complex fiber thermal insulation material comprises the following steps of coating the SiO2 aerogel particles with a certain size on the surfaces of the inorganic fibers with a certain specification through mist spray, heating, pressurizing, drying and shaping, and reinforcing and shaping through a spinning process. Different forms of thermal insulation materials, such as the insulation quilt, the insulation blanket and the insulation board, can be prepared according to the control pressure and the cutting size. The thermal insulation material, which is prepared by the invention, has the advantages of excellent thermal insulation property, good mechanical strength, simple production process and stable performance of a finished product, and can be widely applied to the fields of building thermal insulation and industrial thermal insulation.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an airgel composite fiber thermal insulation material and a preparation method thereof. Background technique [0002] At present, the total energy consumption of buildings in my country has exceeded 30% of the total primary energy consumption, ranking first in energy consumption, and the proportion of building energy consumption in my country's energy consumption is still increasing year by year. Building energy conservation has become one of the key areas of energy conservation in the whole society. one. The development of building energy-saving materials has always promoted the development of building energy-saving technology and promoted the industrial upgrading of the building energy-saving industry. [0003] Silica airgel is a continuous three-dimensional network structure formed by the mutual aggregation of nanoscale particles. Because of its special nanoscale ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/78
Inventor 史继超辛春华阮丰乐董波
Owner SHANGHAI GUANFA MARINE BIOTECH CO LTD
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