Bamboo cellulose aerogel thermal insulation material as well as preparation method and application thereof

The technology of cellulose aerogel and thermal insulation material is applied in the field of building thermal insulation materials, which can solve the problems of large environmental pollution of chemical reagents, complex preparation process, difficult promotion, etc., and achieves low price, simple preparation process and short preparation time. Effect

Active Publication Date: 2020-04-28
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this method is complex, time-consuming, and requires processes such as bleaching and strong alkali treatment. The discharge of chemical reagents causes great environmental pollution, and it is difficult to promote in practice.

Method used

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  • Bamboo cellulose aerogel thermal insulation material as well as preparation method and application thereof
  • Bamboo cellulose aerogel thermal insulation material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The embodiment of the present invention provides a kind of preparation method of bamboo cellulose airgel insulation material, such as figure 1 As shown, it specifically includes the following steps:

[0039] S1, get bamboo processing waste, put into container after washing with deionized water, add the 1.0wt% sodium chlorite solution that quality is 15 times of bamboo processing waste, meanwhile, add glacial acetic acid to adjust its pH value 4.0, and treated in a water bath at 75°C for 6 hours, wherein sodium chlorite and glacial acetic acid were added every hour, and the concentration and pH of the sodium chlorite solution were controlled to be 1.0 wt% and 4.0 , to remove lignin, and then wash to neutral with deionized water to obtain comprehensive cellulose;

[0040] S2, get 10g of the heald cellulose sample prepared in step S1 and add it to 990g deionized water, disperse to obtain a heald cellulose suspension with a concentration of 1wt%, then use the industrial ul...

Embodiment 2

[0045] The embodiment of the present invention provides a preparation method of bamboo cellulose airgel thermal insulation material, which is similar to embodiment 1 and specifically includes the following steps:

[0046] S1, get bamboo processing waste, put into container after washing with deionized water, add the 1.2wt% sodium chlorite solution that quality is 13.5 times of bamboo processing waste, meanwhile, add glacial acetic acid to adjust its pH value 3.5, and treated in a water bath at 75°C for 5 hours, wherein, every hour, sodium chlorite and glacial acetic acid were added to control the concentration and pH of the sodium chlorite solution to be 1.2wt% and 3.5% respectively , to remove lignin, and then wash to neutral with deionized water to obtain comprehensive cellulose;

[0047] S2, get 10g of the heald cellulose sample prepared in step S1 and add it to 990g deionized water, disperse to obtain a heald cellulose suspension with a concentration of 1wt%, then use the ...

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Abstract

The invention discloses a bamboo cellulose aerogel thermal insulation material and a preparation method and application thereof. The preparation method comprises the steps that bamboo processing wasteis subjected to bleaching treatment to remove lignin to prepare holocellulose, the holocellulose is prepared into suspension liquid and then subjected to ultrasonic crushing, and then pre-freezing and vacuum freeze-drying treatment are conducted in sequence. The preparation method comprises a chemical treatment step, an ultrasonic treatment step and a freezing treatment step, so that the use of chemical agents can be greatly reduced, and the preparation method is green and environmentally friendly; the preparation method is simple in preparation process, low in energy consumption, short in preparation time, wide in raw material source, low in price, low in cost and wide in practical application prospect; the prepared bamboo cellulose aerogel thermal insulation material not only has certain strength, but also has a good thermal insulation effect, can effectively improve the utilization rate and the industrial added value of the bamboo processing waste, expands the recycling way of thebamboo processing waste, and is of great theoretical significance.

Description

technical field [0001] The invention belongs to the technical field of building thermal insulation materials, and in particular relates to a bamboo cellulose airgel thermal insulation material and a preparation method and application thereof. Background technique [0002] Insulation materials are an important means to reduce building energy consumption and greenhouse gas emissions. With the increasingly serious problem of global warming, the application of insulation materials is becoming more and more important. Traditional insulation materials include polystyrene, polyurethane, cork, mineral wool, melamine, and more. [0003] Traditional thermal insulation materials are widely used due to their low cost and simple preparation process, but the thickness of traditional thermal insulation materials is thick, which greatly increases the complexity of building structures, and is not environmentally friendly, and waste is likely to cause environmental pollution. In addition, its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L1/02
CPCC08J9/28C08J2201/0484C08J2301/02
Inventor 王汉坤黎静黄汉霄张雪霞张晓凤
Owner INT CENT FOR BAMBOO & RATTAN
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