Preparation method of long-acting stable foaming agent

A foaming agent, stable technology, applied in the field of preparation of long-term stable foaming agent, can solve the problem of low stability of foaming foam, achieve good foaming and foam stability, good foam stability, good foaming effect of ability

Inactive Publication Date: 2019-04-16
雷春艳
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention: Aiming at the problem that the foaming foam stability of the existing cement foaming agent is not high, a preparation method of a long-acting and stable foaming agent is provided

Method used

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  • Preparation method of long-acting stable foaming agent

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Embodiment Construction

[0027]Take fresh tea tree flowers, wash them with deionized water, dry them in an oven with a temperature of 60-80°C to constant weight, and cool them to room temperature to obtain dried tea tree flowers. Grind the dried tea tree flowers and grind them for 20-80°C. 30-mesh sieve to get tea tree pollen, mix tea tree pollen, polyvinylpolypyrrolidone and 80% ethanol solution at a mass ratio of 1:0.4:20, and ultrasonicate at 300-350W ultrasonic power and 60-70°C Extract for 1-2 hours, centrifuge at a centrifugal speed of 3000-4000r / min for 10-15 minutes, collect the supernatant as the extract; mix sodium dodecylbenzenesulfonate with the extract at a mass ratio of 1:20 , stirring at a stirring speed of 500 to 600r / min for 1 to 2 hours to obtain a mixed solution, mix lauryl alcohol and the mixed solution at a mass ratio of 1:30, and continue to stir for 20 to 30 minutes to obtain a modified extract; at a mass ratio of 1:30 50 Add cellulase to the modified extract, stir at a temperat...

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Abstract

The invention relates to a preparation method of a long-acting stable foaming agent, and belongs to the technical field of concrete additives. The method adopts anionic surfactant sodium dodecylbenzenesulfonate and a lauryl alcohol to compound and modify a tea saponin extract, thereby reducing the surface tension of a compounding system, a sulfonic acid group (-SO3) in a surfactant molecule is associated with groups such as -OH, -COOH, -CH2OH and the like in a base foaming agent by forming chemical bonds, and the lauryl alcohol and tea saponin can form tight mixing film on the surface of a foam; pseudomonas aeruginosa and a corresponding fermentation medium are inoculated into the modified tea saponin extract, the pseudomonas aeruginosa is converted into rhamnolipid by using a glucose carbon source in the tea saponin extract, biosurfactant rhamnolipid is inoculated to the tea saponin extract, the surface tension of a system can be significantly reduced, and the foaming and foam stability of the prepared foaming agent are relatively stable.

Description

technical field [0001] The invention relates to a preparation method of a long-acting and stable foaming agent, which belongs to the technical field of concrete additives. Background technique [0002] Foamed concrete plays an important role in the development of new energy-saving wall and roof heat preservation and heat insulation technology and materials because of its light weight, thermal insulation, heat insulation, sound insulation, and good seismic performance. Its performance is affected by many factors, among which the performance of the blowing agent will directly affect the fluidity and stability of the freshly mixed slurry, and ultimately determine whether the sample collapses or not, density, strength and pore structure. [0003] Foaming agent, also known as foaming agent, refers to a class of substances that promote the generation of foam by physical or chemical methods to form closed-cell or connected-cell structures. The foaming agent can generate air bubble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B24/06C12P19/44C12R1/385C04B103/42
CPCC04B40/0039C04B24/06C04B2103/42C12P19/44C04B24/20C04B24/026C04B24/2688
Inventor 雷春艳王凡史志新
Owner 雷春艳
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