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Do you know the application of foaming agent

wallpapers Innovations 2020-04-13

A foaming agent is a substance that makes the target substance into pores. It can be divided into the chemical foaming agent, physical foaming agent, and surfactant. Chemical blowing agents are those compounds that, when decomposed by heating, can release gases such as carbon dioxide and nitrogen, and form pores in the polymer composition; physical blowing agents are foam pores that change through the physical form of a certain substance, That is, formed by the expansion of compressed gas, the volatilization of liquid or the dissolution of solid; the foaming agent has high surface activity, which can effectively reduce the surface tension of the liquid, and the double electron layer is arranged on the surface of the liquid film to surround the air, Forming bubbles, and then composed of a single bubble.

Application of foaming agent in foam concrete

With the worldwide emphasis on building energy efficiency, foaming agents have also begun to be applied to lightweight wallboards and foamed concrete, and form their own technical systems. The use of a foaming agent in building materials mainly lies in the application of foam concrete. The difference between foam concrete and ordinary concrete is that no coarse aggregate is used, and it contains a large number of uniformly closed foam cells. Compared with foam concrete made of foaming agents, Ordinary concrete has many special properties. At present, the cement foam concrete foaming agent is mainly synthesized, compounded mainly, and supplemented by animals and plants. Mainly improve the stability and application performance of blowing agent

To be compounded by adding functional additives, composite foaming agents can not only significantly increase the strength of foam concrete, but also improve production efficiency.

Application of foaming agent in blocks and various lightweight boards

At present, the annual output of blocks in the world is huge. It is mainly used for filling walls and insulating blocks with foaming agents. It is mainly used for thermal insulation in the south, and wall insulation in the north. It can be used in high and low-temperature areas. The biggest feature is the special feature of block heat insulation after using a foaming agent.

Application of foaming agent in compensating foundation materials

Modern building design and construction pay more attention to free settlement and self-weight during the construction process. The self-weight of the building is different, and the free settlement difference will be generated during the construction process. In the architectural design, the part with lower self-weight is usually required to be used as the compensation foundation and the foaming agent. In the foam concrete, it can better meet the design requirements of compensation foundation materials.

Application of foaming agent in highway backfilling light soil

The latest lightweight backfill soil is made by mixing a certain percentage of foam and cement into the sand or soil. Adding foaming agent to lighten the foamed soil can replace fly ash for solidification and backfilling, and the technical parameters of the foaming agent can be adjusted so that the density of the lightweight soil is controlled at 500 ~ 1 500 kg / m3 and the compressive strength is at 0.1 ~ Adjusted within the range of 1.5 MPa, the lightweight soil added with blowing agent has high flow performance, and can be pumped into a small filled space, and according to the design requirements, the blowing agent does not affect the self-adaptability of cement. Therefore, the backfill soil is in a self-supporting state, so that the pressure acting on the back of the wall is very small, and can be applied to the construction in a narrow site.

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Tag: foaming agen