High grade sealants are 100% silicone glass glue

2020-11-04 16:46:00

Friends who often use sealants will find that the adhesion effect caused by changing different products is also different. Some high-grade sealants imported from abroad have better effect, and some brand products are better. In short, there will be differences.

The high-grade sealants are made of 100% silicone glass glue, which is hard and lack of wettability. It has poor compatibility with some aluminum-plastic plates, stainless steel and aluminum alloys. In addition, its curing speed is relatively fast. The surface of aluminum-plastic plate, stainless steel and aluminum alloy is very smooth, and the glue has not completely penetrated into the surface of aluminum-plastic plate, stainless steel and aluminum alloy It's melted, so it won't stick. However, the better the silicone adhesive is, the better the solubility may be with some aluminum-plastic plates, stainless steel and aluminum alloy, but the domestic silicone adhesive will be better. It can be seen that the quality of basic materials is guaranteed, and the effect of sealant is also guaranteed.

Surfactant molecules are first adsorbed on the interface between oil and solution. Under the action of lipophilic and hydrophilic groups of surfactant, plus the convection and agitation of the solution, the oil gradually separates from the metal surface and enters into the solution, forming an extremely small spherical emulsion. When the surface of the parts is strongly corroded after removing the oxide scale, various harmful gases and gases will be produced during the corrosion process When the body escapes, it produces acid fog, which has a great impact on the environment and equipment. If a small amount of OP emulsifier is added to the pickling tank, the surface of the pickling solution can produce a layer of foam to prevent the acid mist from escaping.

In the process of electroplating, in order to improve the performance of electrolyte and the quality of coating, it is often necessary to add some additives. Among them, surfactant is one of the main varieties. It has the functions of leveling, brightening, diffusing, changing the physical properties of coating and inhibiting the escape of acid mist. The surfactants commonly used in electroplating include Pingjia, OP emulsifier, sodium dodecyl sulfate, sodium methylene naphthalene sulfonate, fluorine surfactant, fatty acid polyethylene oxide ester, polyethylene oxide castor oil, etc.