A kind of cement foam stabilizer and its cement composition and application method

Abstract

The invention discloses a cement foam stabilizing agent, which has a structural formula shown as the specification. Specifically, R1 and R2 are alkyl with 3-10 carbon atom numbers, and R represents a molecular skeleton. The invention also discloses a cement composition based on the cement foam stabilizing agent, and the cement composition comprises the following components by mass: 35%-50% of cement; 5-15% of polyvinyl alcohol; 4-10% of a water reducer; 1-10% of the foam stabilizing agent; 1-8% of sodium bicarbonate; 1-5% of oleic acid; 5-10% of polystyrene powder; and 10-30% of water. The cement foam stabilizing agent provided by the invention has a better function of stabilizing cell shape and size and mechanical properties, maintains the cell strength and toughness, and simultaneously enhances the strength of the cement foaming material system. The cement composition provided by the invention has the characteristics of small volume-weight, small heat conductivity coefficient, low density, high strength and no burning.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to a cement foaming material, in particular to a foam stabilizer containing a cycloalkane molecular skeleton and a foaming cement composition thereof, which is a lightweight, heat-insulating and heat-insulating building material. Background technique [0002] With the development of the construction industry and the emergence of emerging technologies, there is a new demand for new building materials, and new technologies and materials support this development. For a long time, people hope that the building materials will be lightweight and reduce the weight of the building. However, although there are many cement foam materials that can meet this requirement, it is still difficult to achieve light organic materials and high strength inorganic materials due to the limitations of the materials themselves. requirements. Moreover, organic materials have a very low ignition point, and it...

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Problems solved by technology

[0003] In the early days, rosin derivatives were used as foam stabilizers. Although it can provide appropriate viscosity at the bubble interface, form a hard film, and play a certain role in stabilizing the bubbles, its molecular structure is too large, which makes the cement hydration process stronger. Affected; in the later period, protein foaming agent was used. Protein foaming agent is a polymer compound. Although the elasticity is good and the film of the bubble is strong, there are still shortcomings in maintaining the strength of cement.

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