Composite protein surfactant foaming agent

Abstract

The invention discloses a composite protein surfactant foaming agent. The foaming agent is prepared by mixing an anionic surfactant or an ampholytic surfactant with a protein anionic surfactant according to the mass ratio of 1:(0.5-3), wherein sodium caseinate is adopted as the protein anionic surfactant, lauryl sodium sulfate or lauryl sodium glycinate or sodium lauryl sarcosinate is adopted as the anionic surfactant, and lauramidopropylamine oxide or cocamidopropyl dimethylamine oxide is adopted as the ampholytic surfactant. According to the composite protein surfactant foaming agent, through the synergistic effect among the different types of surfactants, the surface tension of the system solution is reduced, the water carrying capacity of a film is improved, the thickness of the foam film is increased, and therefore the foam strength is improved. The foaming agent has the advantages that few components are contained, the using amount is little, no other auxiliary needs to be added, foaming is rapid, the foaming amount is large, the stability is very good, and the compatibility with concrete grout is good.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals and light inorganic materials, and in particular relates to a protein surfactant composite foaming agent. Background technique [0002] At present, there are two main technologies for preparing foamed concrete. One is chemical foaming, that is, during the mixing process of concrete slurry, the method of releasing gas through a chemical reaction causes pores inside the concrete to be prepared into foamed concrete; the other is Physical foaming, that is, the foaming agent is prepared into foam by stirring or air blowing, and then mixed with concrete slurry to prepare foamed concrete. Compared with chemical foaming, the cost of physical foaming is low, and the process is relatively simple. Therefore, physical foaming is the main method in the preparation process of foamed concrete. Surfactant composite foaming agent is the most widely used foaming agent in physical foaming. On the one hand, a...

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Problems solved by technology

At present, the mainstream foaming agent on the market is the fourth generation composite foaming agent, which solves the problem of poor performance of single-component foaming agents

For example, the Chinese patent whose publication number is CN103553421B and whose invention name is "An Environmentally Friendly Compound Concrete Foaming Agent and Its Preparation Method" discloses a compound consisting of alkyl glucoside, sodium fatty acid methyl ester sulfonate, cocamidopropyl Concrete foaming agent composed of betaine, tea saponin, gum arabic, polyethylene glycol and bentonite. This foaming agent has good foaming ability, fine and uniform foam, and less bleeding, but the composition of this foaming agent is complex. , the cost is high, and it cannot be used on a large scale

The Chinese patent whose publication number is CN102964083B and whose invention name is "A Modified Soybean Protein Concrete Foaming Agent" discloses that the modified soybean powder, cetyltrimethylammonium bromide, sodium dodecylbenzenesulfonate , rhamnolipid, gum arabic and hydrogen peroxide, the foaming agent has the characteristics of good concrete compatibility and high air bubble rate, but the preparation process of this foaming agent is relatively complicated and has many components , and the cost is relatively high

The Chinese patent whose publication number is CN102765962A and whose invention name is "A Foaming Agent for Polymer Concrete and Its Preparation Method" discloses a kind of foaming agent composed of macromer, sodium sulfite, acetone, formaldehyde, sodium methallyl sulfonate and Composite foaming agent composed of water, this foaming agent has the characteristics of stable product, good water solubility, and not easy to deteriorate, but the materials used in this foaming agent will pollute the environment and be toxic, and its application range is very limited

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