Coating base | coating it is very important to use antiseptic fungicide, the experience is important!

1. The use of mildew-resistant fungicide method is divided into physical incorporation and chemical combination. Physical incorporation saves time and effort. It is the mildew-proof agent, fungicide in the form of powder, liquid or dispersed liquid directly added to the coating. Its mildew prevention and bactericidal efficacy is not only related to its own efficacy, but also closely related to its particle size and dispersion. The diffusion of mildew prevention and fungicide in the case of wetting, the larger the particles, the worse the dispersion, and the slower the diffusion. If the invading mold spores in the mildew, fungicide has not spread before germination, will lose the mildew effect. The minimum granularity of the best mildew prevention effect is about 5 to 6 m. Physical mixing method because the coating film is exposed to sunlight, rain, after washing, volatilization and migration, will cause a weakened protective effect, only suitable for indoor coating.

2. Chemical combination method is to put the mildew prevention agent, fungicide fixed on the molecules of the coating base material through the chemical reaction, becoming a part of the film formation. It can make up for the deficiencies of the physical mixing method and maximize the efficacy. Chemical binding method is the agent of hydroxyl, amino and acyl chloride action to obtain the corresponding acrylate, and then copolymer with acrylic acid monomer or ethylene acetate monomer to make a chemical combination of mildew sterilization resin.

3. In indoor water-based paint, only need to add preservatives, and external water-based paint when need to add preservatives and mildew-proof agent, in order to protect the finished paint and paint film in the tank for microbial protection.

4. When using mercury biokiller, it can perform dual tasks, namely, tank and paint film protection. It makes it easier to add preservatives and mildew agents.

5 Suppliers of preservatives have conducted preliminary screening for typical formulations. Any latex paint is not recommended for such purposes. In the supplier's literature, a certain preparation is recommended to a certain product, but not to an alternative product, which can be referred to when used.

6. Antipreservatives are designed to be easy to use. Most preservatives used in coatings are liquid products to maximize the possible trouble of adding. And mildew agent should be stored in the paint film, seepage at any time, they are insoluble, then they should be made into a micro powder easy to wet powder, make it dispersed in the formula. Insoluble mildew agents are usually added after the thickener, mainly before the pigment is added.

7. When a batch of products is found to be contaminated, preservatives can be replenished in it. In most cases, biologically active agents can be added to the final product, noting that the agents is diluted and slowly added with appropriate agitation to not cause improper changes. Insoluble mildew prevention agent should be mixed with a suitable diluent or dispersant, and then carefully added.

8. The amount of mildew prevention should be appropriate, overdose use may appear some incompatible phenomenon, for example, the pH value has changed, or the color exceeds the routine. The right approach is to identify and eliminate microbial contamination and keep it clean, which is more effective than using mildew prevention agents at the most recommended doses.

9. The products allocated in the laboratory are different in quality from those prepared in a large scale in the factory. If it is found that there is some situation not found or not judged in the small test procedure, it is necessary to re-confirm the product when the preparation is completed.