In a liquid containing a surface active agent, aspherical bubble rising, into a stable macro bubble (big bubble). While these bubblesrise to the air interface, but which is encircled by a layer of surfactantmolecules. On the air interface also has a layer ofsurfactant molecules of the surface film, and therefore, when the bubbles riseto the surface to form a double layer. Double layerthickness of up to several microns, these small surface of the foam is verystable and difficult to eliminate. Bub ...

It can be defined as the foam of air bubbles in aliquid medium in a stable dispersion. If the general air into the liquid, thebubble generated can assume a spherical shape. Since the air is lessdense than the liquid, and thus it will migrate to the surface, when the gasreaches the surface of the liquid without surfactant, the bubble will burst,the air inside the bubble dissipates, the liquid surrounding the bubble in theprevious and together. Thus, the pure liquid (liquid containing nosurfactant ...

In many inks and coatings processingproduction process, the need to use surface-active substances to achievespecial effects. Forexample, in the production of water-based paint, water-insoluble base materialproduction, water-insoluble base material is required to deal with the use ofemulsifiers. At the same time,we have to improve substrate wetting and coating pigment dispersion by using additives.Surfactant most importantcharacteristic is that they have a tendency to build in the interface, such ...

For the surface treatmentof glass fiber. Silane coupling agent can improve theglass fiber and resin adhesive properties, improve the glass fiber reinforcedcomposite material strength, water resistance, weather resistance and otherproperties. In 2004 the use of glass fiber silane coupling agentaccounts for about 50% of the total consumption, which used more varieties ofvinyl silane, aminosilane, methacryloxysilane and so on.For surface treatment ofinorganic fillers. Silane coupling agent In thein ...

Silane coupling agentis a kind of special structure of low molecular weight organic siliconcompounds. Thegeneral formula for RSiX3, where R represents amino, mercapto vinyl, epoxy,chloropropyl, cyano and methacryloxy groups and other groups. These groups and different matrix resins have a strongability to react, and x represents a hydrolyzable group such as halogen,alkoxy, acyloxy and the like. Silanecoupling agent is trichlorosilane (HSiCl3) and with reactive groups ofunsaturated olefins in the ...

Curing agent can be divided according touse at room temperature curing agent and heat curing agent. Epoxy resin at hightemperature curing general good performance, but in civil construction in theuse of paint and adhesives due to heating difficulties, need room temperaturecuring. So most of the use of fatty amines, ring lipids and polyamide, and soon. In particular, coatings and adhesives used in winter have to be used incombination with polyisocyanates, or polyhalines having a malodorous odor.A ...

The curing temperature of the curing agentand the heat resistance of the cured product has a great relationship.Similarly, in the same type of curing agent, although the same functionalgroups, but due to different chemical structure, its properties and curingproperties are different. Therefore, a comprehensive understanding of the samefunctional groups and different chemical structure of the polyamine curingagent of the traits, characteristics, the choice of curing agent is veryimportant.In term ...

The silicone polymer is a polymer compoundhaving a silicon atom in its main chain. At present the most importantorganosilicon polymer is polysiloxane. Polysiloxanes are polymeric, chain-like,cyclic or reticular polymeric compounds that are polymerized from many monomerscontaining double bonds, commonly known as silicones. Its structure ischaracterized by containing a silicon, oxygen atoms alternately arranged in thebasic skeleton, each silicon atoms are connected with organic groups. Thesilicon- ...

Silicone is a very good nature of thepolymer material, with good temperature resistance, weatherability,physiological inertia and insulation properties. Electronics, biomedical,aerospace, machinery, shipbuilding and daily-use industries have a wide rangeof applications. Silicone materials from the morphology of a gaseous, solid,liquid, etc., can be cross-linked into a solid membrane. Can also be a softelastomer, can be room temperature crosslinking, high temperature crosslinkingcan also be appli ...

Polyacrylic acid sodium is a matureindustrial products, there are industry standards. The standard number is: HG /T2838-2010. Standard product appearance is colorless to yellow liquid, solidcontent greater than or equal to 30%.High relative molecular mass forflocculants.Water treatment agent - flocculantPolyacrylic acid sodium is a linear,soluble polymer compounds, the molecular chain of the carboxyl group due toelectrostatic repulsion. So that the polymer chain stretches around, causingthe adso ...