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A kind of bamboo cellulose airgel thermal insulation material and its preparation method and application

A technology of cellulose airgel and thermal insulation materials, applied in the field of building thermal insulation materials, can solve the problems of large environmental pollution of chemical reagents, complex preparation process, and difficulty in popularization, and achieve low price, simple preparation process, and short preparation time Effect

Active Publication Date: 2022-05-03
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of bamboo cellulose airgel thermal insulation material and its preparation method and application
  • A kind of bamboo cellulose airgel thermal insulation material and its preparation method and application

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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 of removing lignin from bamboo processing waste by bleaching to obtain holocellulose; After being configured into a suspension, it is ultrasonically broken, and then subjected to pre-freezing and vacuum freeze-drying in sequence. The preparation method of the bamboo cellulose aerogel thermal insulation material provided by the invention comprises a chemical treatment step, an ultrasonic treatment step and a freezing treatment step, which can greatly reduce the use of chemical agents, and is environmentally friendly; the preparation process is simple, and the energy consumption is low. Low cost, short preparation time, wide source of raw materials, low price, low cost, and broad practical application prospect; the prepared bamboo cellulose aerogel thermal insulation material has certain strength and good thermal insulation effect, which can effectively improve bamboo processing. The utilization rate of waste and the added value of the industry have expanded the way of recycling bamboo processing waste, which 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 Patents(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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