Application of OIT-45 anti-mildew agent

2021-10-17   Pageview:302

OIT has a strong ability to kill mold, the use of the effect is significantly better than the traditional anticorrosive anti-mold agent, is the polymer materials, leather, artificial leather and microfiber anti-mold agent of the new generation of products.

This product can also be used in emulsions, coatings, paints, lubricants, shoe polish, bamboo and wood products and cultural relics protection and many other products of mold prevention. The recommended dosage is 0.3-1.5% (w/w) and can be used by impregnation or spraying method.

 

 

 

 

 

 

 

 

 

 

 

During the construction process, pollution caused by the air or construction facilities, such as scattered foreign paint mist, fine dust particles, and condensed vapor droplets, fall into the still fluid coating film. If the surface of these pollutants The tension is lower than that of the wet film, which causes the coating to spread out from the center of the pollution source to form shrinkage holes that do not expose the bottom. If the coating film is thick, the coating will move from the bottom into the shrinkage cavity to replenish, preventing the formation of shrinkage holes: If the coating film is thin and the amount of paint in the bottom layer is not enough to replenish, shrinkage holes are inevitable.
During the curtain coating construction, if the surface tension of the pollutant particles falling on the surface of the flow curtain is smaller than that of the paint, the liquid film at the pollutant particles will flow to the surroundings and cause the thin area of ​​the curtain to form a curtain hole. When the curtain falls on the substrate, shrinkage will occur.
In addition, if the critical surface tension of the substrate is low, even if the surface tension of the coating is lower than it, it can wet the substrate when it is just coated, but during the drying process, as the solvent volatilizes, the surface of the film will be wetted. The tension continues to increase, approaching the surface tension of the film-forming polymer. When the surface tension of the wet film reaches the critical surface tension of the substrate, the spread coefficient is less than 0, and shrinkage or shrinkage will appear. If the wet film loses effective fluidity due to its high viscosity before then, shrinkage cavities will not be formed; if the temperature rises to make the coating film fluid again, shrinkage cavities will occur.

Intrinsic factors such as the formulation and composition of the shrinkage coating caused by internal reasons can also cause shrinkage. During the storage of the coating, if a small amount of macromolecular substances in the resin aggregate, particles that are insoluble in the solvent will be produced; or during the cross-linking and curing process of the coating, the solvent volatilization causes the solubility between the resin and the solvent of different compositions to change , Poorly soluble resins may precipitate and become insoluble colloidal particles; polypropylene wax sds in addition, if the low surface tension substances in the coating, such as polydimethylsiloxane, antifoaming agent, etc. are excessive or their molecular weight is too large, they will produce insoluble particles in the coating. Compatible droplets; these particles or droplets that are incompatible with the system will form low surface tension points in the wet film, and produce a surface tension gradient with the surrounding coatings, causing the wet film with higher surface tension to be unable to wet These points cause shrinkage holes, which are generally point-type shrinkage holes that do not expose the bottom.

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