How to Use Methyl MQ Resin in Antifoaming Agents
This explains the specific uses of methyl MQ resin in antifoaming agents. Simply put, it primarily enhances the performance of antifoaming agents through compounding and addition, focusing on high temperature resistance, strong alkali resistance, and defoaming effect.
1. Compounding Use
Compounding with hydroxyl silicone oil: High-viscosity hydroxyl silicone oil and MQ silicone resin together can form a highly branched network polymer, making the antifoaming agent more resistant to high temperatures and strong alkalis. The general addition amount is between 5% and 10%.
Compounding with polyether-modified silicone oil: The smaller the ratio of MQ resin (M/Q), the more complex the spatial network structure, and the better the defoaming performance. However, it should be noted that if the ratio is too small, it may be difficult to dissolve in methyl silicone oil, so the proportion must be carefully controlled.
2. Addition Method
Direct addition: Directly mixing MQ resin into the antifoaming agent base material, such as methyl silicone oil, can improve its surface properties, making the antifoaming agent more resistant to high temperatures and shear forces.
As a crosslinking agent: Hydrogen-containing MQ silicone resin can also be used as a crosslinking agent in the hydrosilylation reaction, further improving the stability and performance of the antifoaming agent.
3. Application Scenarios
Industrial defoaming: Particularly suitable for use in high-temperature and strong alkaline environments, such as in the chemical, textile, and paper industries.
Food and medicine: Because MQ resin itself is non-toxic and environmentally friendly, it can also be used in food processing and pharmaceutical production.
4. Precautions
Solubility: The solubility of MQ resin is affected by the M/Q ratio, and the proportion must be adjusted according to the type of base material.
Stability: Under strong acid or strong alkaline conditions, MQ resin may hydrolyze, so attention should be paid to the operating environment.
