BYK YouTube Big Chemie Silicone-based Additives in Different Solvents
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You can see the effects of additives on BYK YouTube. Behavior of polysiloxane-based additives in three different solvents - After shaking three types of solvents (ethanol, xylene, butyl acetate), no foam remains. A certain amount of silicone-based additive (BYK-323) is added to each solvent. After shaking, the left bottle is cloudy, the middle bottle is clear but foams strongly, and the right side is clear with no foam. The effectiveness of silicone-based surface modifiers strongly depends on the compatibility in the solution state.
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Behavior of polysiloxane-based additives in three types of solvents
・After shaking three types of solvents (ethanol, xylene, butyl acetate), no foam remains. A certain amount of silicone-based additive (BYK-323) is added to each solvent. After shaking, the left bottle is cloudy, the middle bottle is transparent but foams strongly, and the right side is transparent with no foam: The effectiveness of silicone-based surface modifiers strongly depends on the compatibility in the solution state.
During the application and coating process on substrates, various surface defects occur. One cause is the significant difference in surface tension. For example, if the surface tension of the coating is higher than that of the substrate, issues such as poor wettability (high contact angle), poor adhesion, and beading may arise. Even after application or during drying, this difference in surface tension can lead to undesirable leveling and color floating. BYK additives can improve or prevent these surface defects.
