Application areas of BYK-929 wax powder

2021-12-10   Pageview:50

1, Coating industry
2, Construction coatings
3, Industrial coatings
4, Wood and furniture coatings
5, Leather coatings

Properties and advantages
The additive adds surface protection and has a matting effect. tui jian is used in both aqueous and solvent-borne systems.

Recommended dosage
0.1-6% Additive based on total formulation.

 

 

 

 

 

 

 

 

 

 

 

 

 

In medium and high PVC coatings, the emulsion content is low. Even if the pseudoplastic associative thickener can increase the viscosity of the coating, the syneresis phenomenon is serious, causing serious delamination. Adding some Newtonian associative thickeners, because of the low amount of emulsion, the associative effect is also difficult to work. At this time, try to modify the slurry, reduce the amount of pseudoplastic associative thickener, and add a certain amount of Newtonian thickener, which greatly improves the storage and construction performance of the coating.

For ME20000R, the slurry viscosities of the three dispersion systems are basically similar. This is because ME20000R thickens water, and the amount of water in the three systems is the same, so the viscosity of the system is basically close. For the system using the associative thickener DSX3551, it can be clearly seen that the viscosity of the three dispersion systems is very different. The viscosity of the slurry using CM-134 or H-34 is higher than that of using H5040/PE-100. The viscosity of the slurry is much higher. The reason is that the use of colloidal modifiers strengthens the association of pigments, fillers and associative thickeners, thereby increasing the viscosity of the system. It must be noted that no emulsion was added at this time.

The influence of different thickeners on viscosity
The use of colloidal modifiers improves the stability of the wax dispersion slurry. When the associative thickener is used to thicken the dispersion slurry, the system using colloidal modifiers also has better stability. 4. Toning
Colloidal modifier improves paint toning
①The colloidal modifier CM-134, H-100 or H-34 can modify the pigment and filler particles. After the colloidal modifier is added, the dispersion stability of the pigment and filler particles can be maintained. After storage for a period of time, The slurry will not appear hard precipitation.
②Pigment and filler particles that have adsorbed colloidal modifier CM-134 or H100, H-34 will respond after adding a small amount of associative thickener, forming a three-dimensional network structure, preventing steric hindrance In order to improve the agglomeration and sedimentation of pigment and filler particles. The pigments and fillers without colloidal modifiers only have the electrostatic repulsion effect of the electric double layer, and the viscosity of the dispersion slurry is obviously reduced, and the high-density inorganic materials selected for low-PVC coatings are likely to cause sedimentation.

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