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Method for preparing building thermal insulation heat-resisting board

A technology for heat-resistant boards and buildings, applied in thermal insulation, building components, climate change adaptation, etc., can solve problems such as easy water absorption, complicated construction process, and increased weight

Active Publication Date: 2014-05-14
钟春燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Benzene board is flammable and has good thermal insulation effect, but it is easy to absorb water, which will cause weight increase and deformation. Waterproof measures must be in place, otherwise it will directly affect the service life. In addition, the fire performance is low, the construction process is complicated, and grids need to be added cloth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Coconut water was used as the culture medium to inoculate activated Gluconoacetobacter xylinum, the inoculum amount was 8% of the weight of the culture medium, and the shallow plate was statically fermented at 28°C for 7 days, and a biocellulose film was obtained on the surface of the culture medium with a thickness of 15mm. After cutting it into a mask product of proper shape, the remaining small pieces of corner gel product are ready for use.

[0033]

Embodiment 2

[0035] With glucose 3wt%, sucrose 2wt%, yeast extract 1wt%, peptone 0.5wt%, disodium hydrogen phosphate 0.2wt%, dipotassium hydrogen phosphate 0.1wt%, magnesium sulfate 0.1wt%, agar 2wt% and 91.1wt% water It is prepared as a culture medium, inoculated with activated Acetobacter xylinum, the inoculation amount is 10% of the weight of the medium, and fermented dynamically in shake flasks or other containers at 26°C for 5 days, and a spherical biocellulose gel is obtained in the medium particles.

[0036]

[0037] 2. Preparation of airgel

Embodiment 3

[0039] The small corner gel product obtained in Example 1 was dissolved in 6% sodium hydroxide aqueous solution, stirred continuously, and ultrasonically dispersed for 1 hour under the power condition of 300w to prepare a dispersion solution. Continue to stir, add 2.5 mol / L silicate solution, and then keep the reaction at 50-80°C for 1 hour, and adjust the pH value to 6.0-7.0; after keeping the reaction for 1 hour, wash with deionized water to terminate the reaction. The airgel product is obtained by subjecting the gel solution chelated with silicon dioxide to supercritical drying of high-temperature ethanol.

[0040]

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PUM

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Abstract

The invention relates to a method for preparing a thermal insulation heat-resisting board which is good in thermal insulation effect, low in self weight, fireproof and heat resistant. The method includes the following steps that (1) biological cellulose is prepared; (2) the biological cellulose is dissolved into solvent, so that a disperse solution is manufactured; (3) a silicate water solution is added into the disperse solution for reacting under the condition of continuous stirring; (4) supercritical drying is conducted on a gel solution after reacting, so that aerogel is manufactured; (5) the aerogel and the rest of auxiliary materials are mixed, pressed and formed together, and then the thermal insulation heat-resisting board is obtained. Due to the fact that an aerogel product which is made of biological cellulose is used in the thermal insulation heat-resisting board, so that the weight and the density of the thermal insulation board are greatly lowered, and better heat-resisting performance and insulation performance can be achieved.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing a thermal insulation and heat-resistant board for building. [0002] Background technique [0003] Insulation boards for construction are easy to understand, and they are boards for building insulation. The thermal insulation board is a rigid foam plastic board made of polystyrene resin as raw material plus other raw and auxiliary materials and polymers, mixed with heat and injected with a catalyst, and then extruded to form a rigid foam plastic board. It has moisture-proof and waterproof properties. Reduce the thickness of the building's outer envelope, thereby increasing the indoor usable area. [0004] Its common types are: [0005] XPS insulation board is made of polystyrene resin as raw material plus other raw and auxiliary materials and polymers. It is a rigid foam board manufactured by heating and mixing while injecting a catalyst, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/80E04B1/94
CPCY02A30/24Y02B80/10
Inventor 钟春燕钟宇光
Owner 钟春燕
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