The commonly used silane coupling agent is a trialkoxy type, but the trialkoxy type coupling agent may lower the stability of the matrix resin, and thus the research and application of the dialkoxy type coupling agent should be emphasized.
The synthesis of polymers with reactive silane groups is also one of the development directions of silane coupling agent, which have better compatibility with resins in adhesives. It can form a uniform surface on the surface of the adherend, thus having a better bonding effect.
Peroxysilane is also a coupling agent that has been studied. It is characterized by the fact that under the action of heat, the coupling agent decomposes to generate free radicals, which can crosslink with the ethylenic polymer, thereby promoting the adhesion of the vinyl polymer.
An important application of the new development of silane coupling agents is the production of water-crosslinked polyethylene. This process was developed by Dow Corning Corporation of the United States and has been commercialized. It has been tested in domestically using silicone emulsions to treat woolen fabrics. Besides, it has been found that the use of silane coupling agent in combination with silicone emulsions can improve the performance of woolen fabrics.
Coupling agent containing isobutyl functional group: isobutyltriethoxysilane and silane coupling agent
This product is a high-purity isobutyltriethoxysilane. The small molecular structure can penetrate the cementitious surface and penetrate into the concrete to chemically react with the water and the water molecules exposed in the acidic or alkaline environment. And then, a water repellent treatment layer is formed to inhibit moisture from entering the substrate. It is waterproof, anti-Cl, UV resistant and breathable. It can effectively prevent the corrosion of the concrete and internal steel structure due to water seepage, sunshine, acid rain and seawater erosion, loosening, peeling off, mildew and disease, and improve the service life of the building. The protected substrate has good water repellency and retains its original appearance. Alkaline environments, such as concrete that is poured shortly, stimulate the reaction and accelerate the formation of the water repellent layer.
It is widely used in various types of reinforced concrete structures, such as commercial buildings (inside and outside walls and roofs and floors of high-end buildings), parking lots, garages, warehouses and cold storages, swimming pools, highways, bridge structures, highways, port terminals. , offshore, etc. It is especially suitable for high-grade concrete structures used in harsh environments, roads, overpasses, utility poles, sewage treatment plants, landfills, high temperature plateaus, etc. . It is a product recommended by the national concrete industry anti-corrosion regulations.