In the formulation, the main functions of surfactants are: one is to improve the emulsifying ability between the components, so that they can be more effectively mixed with each other; the other is to control the system to have proper surface tension during the foaming process to produce good Bubble network structure, therefore, can also be called foam stabilizer. Polyester and polyether flexible foam have different raw material bases and different properties. Therefore, the selection and dosage ...

General resin refers to an organic structure that can soften or flow after heating, and is mostly semi-solid and solid at room temperature. Broadly speaking, resin can refer to all macromolecules processed by plastics, especially chemicals. Resin itself is also one of the raw materials for manufacturing plastics. It can be said that the application of resin is very wide. The silicone resin mentioned by the editor here refers to a very special kind of resin, also called a highly cross-linked mixt ...

For non-chemical professionals, this term is too unfamiliar. Will it exist in our lives and is closely related to life? The stickers, label paper, and even the adhesive part behind the aunt’s towel in our homes are all Cannot do without "silicone release agent". Now, the silicone manufacturer Xin Jiayi will take you to understand what a silicone release agent is.Release agent, also known as release agent, is used between the substrate and the pressure-sensitive adhesive layer. Its mai ...

With the rapid development of industry in our country, the use of defoamers has become more and more widespread, but many people only know that defoamers are mainly used to eliminate foam, but have not deeply understood the working principle of defoamers. Today I will introduce to you the working principle of defoamer.One, defoamer ingredientsWe all know that to understand the working principle of a product, we must first know the composition or structure of the product. First, let's take a look ...

Silica sol is a colloidal solution, odorless and non-toxic. Silica sol is a dispersion of nano-scale silica particles in water or solvent. Since the SiO2 in the silica sol contains a large amount of water and hydroxyl groups, the silica sol can also be expressed as SiO2.nH2O.Silica sol inorganic polymer coatings have been developed in recent years. The key technology for preparing the coating isSilica solUse a special method to remove the water-soluble sodium ions in the water glass. Generally, ...

Silicone rubber waterproof coatings are emulsion-type waterproof coatings prepared by mixing silicone rubber emulsions and other high molecular polymer emulsions as the main raw materials, mixing appropriate chemical additives and fillers, etc., and uniformly mixing them. The coating has good permeability, film-forming properties, water resistance, elasticity, adhesion, high and low temperature resistance, etc., and can be used for construction operations on dry or wet bases without clear water. ...

There is no unified understanding of the mechanism of defoaming agents. According to the mechanism of defoaming agents proposed by the predecessors, there are roughly the following:A general defoaming mechanismTypical general defoaming mechanisms are Robinson defoaming mechanism and Ross hypothesis. The Robinson mechanism is the basis of the Ross hypothesis. It mainly emphasizes the drainage of defoamers to destroy the foam and the Marangoni effect to achieve defoaming; the Ross hypothesis is ca ...

Silica gel can be used as a desiccant and can be reused. Silica gel is a porous material with different particle sizes formed by proper dehydration of silicic acid gel mSiO2·nH2O. It has an open porous structure with a large specific surface (surface area per unit mass) and can adsorb many substances. It is a good desiccant, adsorbent and catalyst carrier. The adsorption of silica gel is mainly physical adsorption, which can be regenerated and reused. Add acid to the alkali metal silicate (such ...

Silica gel is polysilicon bai oxane rubber, polysiloxane used to be called silicone, the main chain structure of du is zhiSi-O-Si structure, silicon atoms are connected by oxygen dao atoms, and at least one organic group is connected. In 1940, Dr. Eugene RoChow made a major breakthrough in technology research and development. It was the earliest elemental polymer used in the industrial field. It has been widely used and developed due to its green environmental protection characteristics.Polysilo ...

Coupling agent is a kind of substance with two functional groups with different properties. The biggest feature of its molecular structure is that the molecule contains two groups with different chemical properties. One is an inorganic-philic group that easily reacts with the surface of inorganic substances. The other is an organophilic group, which can chemically react with synthetic resins or other polymers or generate hydrogen bonds to dissolve them. Therefore, coupling agents are called &quo ...