1. Dispersibility of defoaming agent in solution
The dispersion state and surface properties of defoaming agent in solution significantly affect other defoaming properties. Defoaming agents should have appropriate dispersion degree and too large or too small particle size will affect their defoaming activity.
2. Compatibility of defoaming agent in the foam system
When the surfactant is completely dissolved in an aqueous solution, it is usually aligned at the gas-liquid interface of the foam to stabilize the foam. When the surfactant is in an insoluble or supersaturated state, the particles disperse in the solution and accumulate on the foam, which acts as an antifoaming agent.
3. The ambient temperature of the foaming system
The temperature of the foaming liquid also affects the properties of the antifoaming agent. When the temperature of the foaming liquid itself is relatively high, it is recommended that special high temperature resistant defoaming agent must be used, because if ordinary defoaming agent is used, the defoaming effect will certainly be greatly reduced, and the defoaming agent will directly demulsify the emulsion.
4. Packaging, storage and transportation
Defoaming agent is suitable for 5 ~ 35℃ storage, shelf life is generally 6 months. Do not place it near a heat source or expose it to sunlight. According to common chemical storage methods, ensure that after use sealed to avoid deterioration.
5, the proportion of antifoaming agent
There is a certain degree of deviation between the addition of the original solution and the addition of the diluted solution, and the proportion is not equal. Due to the low concentration of surfactant, the diluted defoaming agent emulsion is extremely unstable and will not be stratified soon. The defoaming performance is relatively poor, and it is not suitable for long-term storage. It is recommended to use immediately after dilution.