Shanghai ShiCi International Trading Co., LTD.
  • Products
    The company mainly produces and sells "HUAMAO" as well as "SANWEI" two major brand products. Products covered three series: One is polyvinyl alcohol (PVA) series of products with an annual capacity of 100,000 tons; the second is dispersible polymer powder can be 85,000 tons per year; the last is the cellulose products annual capacity of 60,000tons. 
  • Services
    Shanghai Shici is willing to provide products with high performance and high quality. Good after-sales services guaranteed for better shopping experience. Please feel free to contact us!
  • Company
    Shanghai shici International Trading Co.Ltd is a professional company which contain enterprise sales, warehousing, distribution, technical services. Shanghai Shici in view of the new market situation and customer demand, the establishment of raw material supply as the core, formulation research, technical support, such as supporting the "integration, one-stop" service marketing model. 
  • Application
    Our polyvinyl alcohol (PVA) series of products, dispersible polymer powder, hydroxy propyl methyl cellulose and other related products are well applied in many fields such as paper, adhesives and emulsion, textiles, barrier films, tec,.
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The Function and Mechanism of Polyvinyl Alcohol Powder in Putty

After the PVA powder is mixed with other powders, the paste slurry is formed by adding water. After evaporation, the structure of inorganic and organic binder is formed, the brittle rigid skeleton of the water rigid material, and the flexible and ductile connection of the PVA powder in the gap and the film structure of the solid surface, this connection can be imagined by a lot of small spring connected to the rigid skeleton, because the polyvinyl alcohol formation of polymer resin film tensile strength is far higher than the number of water rigid materials, so that the strength of the putty can be enhanced, that is, cohesion can be improved.

Because of the flexibility of the polymer, the deformation ability is much higher than the rigid structure formed by the water rigid material, so it can improve the deformation ability of the putty, the effect of the dispersing stress is improved greatly, and the crack resistance of the putty is improved. The water resistance of polyvinyl alcohol powder can be weaker than that of dispersible latex powder. But in the cement-containing putty alkaline system, polyvinyl alcohol will be putty in the cement produced by the alkali saponification, at the same time by the absorption of quartz materials, polyvinyl alcohol hydrophilic can be greatly weakened, so it will not affect the water resistance of waterproof putty performance.

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