What is the raw material of foam? What materials do you need to make foam? I need detailed materials-

Foam raw materials are surfactants or polymer compounds.

As long as gas is introduced into the foaming agent (surfactant or polymer compound) solution, foam will form on the surface of the solution. After the foam is formed, the liquid entrained between the bubble walls is dissipated downward under the action of gravity, the liquid film gradually becomes thinner, and the bubbles approach each other and deform.

There should be an optimal concentration of foaming agent in bulk phase, which is close to the critical concentration of micelle formation. The smaller the concentration, the smaller the adsorption capacity, and the smaller the strength and elasticity of the membrane. When the concentration exceeds the critical micelle formation concentration, the adsorption capacity remains unchanged, but the elastic effect of the membrane will decrease.

Expansion data foam is a dispersion system formed by insoluble gas dispersed in liquid or molten solid. In order to increase foam stability, a very small amount of foam stabilizer (polar organic matter with long carbon chain, such as lauryl alcohol) is often added. Foam stabilizer and foaming agent can not only form a dense mixed film on the surface, but also reduce the critical micelle formation concentration of foaming agent and the adsorption speed of foaming agent, thus increasing the elasticity of the film and increasing the foam stability.

The common defoaming method is to add soluble or insoluble polar organic matter, which can be adsorbed or spread on the surface to replace the original foaming agent, but can not form a stable liquid film itself, so it has defoaming effect. Commonly used defoamers include short-chain or branched alcohols (such as isoamyl alcohol), phosphate esters (such as tributyl phosphate), silicone oil, fluorine-containing polar organic compounds, polymers of ethylene oxide and propylene oxide, etc.

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