organosilicon

Organic silicon leveling agent is a surface state control agent widely used in industries such as coatings, inks, adhesives, etc. to improve the surface flatness and smoothness of coatings. The following is a detailed introduction to organic silicon leveling agents:

Definition and Principle

• definition:Organic silicon leveling agent is a chemical additive containing organic silicon components, used to improve the surface state of coatings.

• Leveling principle:Eliminating surface tension differences by reducing the surface tension of the coating, controlling the surface state of the coating, and eliminating surface defects. To eliminate the Bernal vortex and prevent the formation of flower and orange peel; Eliminate the surface tension gradient difference on the coating film surface, prevent the generation of shrinkage and ripples; Reduce the interfacial tension between the coating and the substrate, enhance the distribution of the coating, improve adhesion, and reduce or eliminate shrinkage caused by the substrate.

Product Category

• silicone oil:Commonly used silicone oils include polydimethylsilane and poly (methylphenylsiloxane). Polydimethylsiloxane is widely used in coatings and inks.

• Organic modified polysiloxane:Compared with silicone oil, organic modified polydimethylsiloxane has better compatibility and functional effects.

Classification and Effects

• Alkyl modified organosiloxane:It has defoaming function and can improve thermal stability, making it a commonly used organic silicon leveling agent.

• Polyether polyester modified organosiloxane:Excellent compatibility, can be used as a water oil dual-use leveling agent.

• Other modified organosiloxanes:Organic silicon leveling agents prepared by different modification methods have different effects, such as the compatibility and applications of polydimethylsiloxane with different molecular weights.

application area

• Paint industry:Widely used in solvent based coatings, UV curable coatings, water-based coatings, and other fields to improve the surface smoothness and smoothness of coatings.

• Ink industry:As an additive in printing ink, it improves the leveling and printing quality of the ink.

• Adhesive industry:Add organic silicon leveling agent to the adhesive to improve its wetting and adhesion properties.

usage method

• Add quantity:According to specific applications and coating formulations, the amount of organic silicon leveling agent added is usually between 0.1% and 1%.

• Add Stage:It can be added at any stage of the coating production process, but it is best to add it evenly during the stirring stage to ensure uniform dispersion.

matters needing attention

• Compatibility:When using silicone leveling agents, attention should be paid to their compatibility with the coating system to avoid adverse reactions.

• stability:Organic silicon leveling agents should be stored in a cool, dry, and well ventilated place, avoiding direct sunlight and high temperatures.

conclusion

Organic silicon leveling agent is an important surface state control agent, which has a wide range of applications in industries such as coatings, inks, adhesives, etc. By using organic silicon leveling agents reasonably, the surface flatness and smoothness of the coating can be effectively improved, and the quality and performance of the product can be enhanced.