Product Details
CasNo： 9006-65-9
Appearance： liquid
Delivery Time： 15 days
Packing： 200kg/drum
Purity： 99%
Product Details
Defoamer (Brand Model: 811)
- Packaging Specification: 200 kg/blue barrel
- Main Ingredient: Organic silicon. It takes polysiloxanes such as polydimethylsiloxane as the main active substance and also contains auxiliary components like emulsifiers and dispersants to ensure that the defoamer can be evenly dispersed in the application system.
Product Properties
It is usually in a milky white or slightly transparent emulsion state and has good fluidity. The pH value is close to neutral, generally between 6 and 8, and it is not easy to significantly affect the pH of the application system.
Action Principle
- Reduce Surface Tension: Organic silicon molecules can quickly adsorb to the surface of bubbles, significantly reducing the surface tension of the liquid. Bubbles that originally existed stably due to surface tension are prone to burst after the surface tension decreases.
- Destroy Bubble Film Elasticity: The defoamer penetrates into the liquid film of the bubble, destroying the elasticity of the bubble film, making the bubble more likely to burst when colliding with each other or under external pressure, thereby playing the role of defoaming and foam suppression.
Performance Characteristics
- Efficient Defoaming: In the pulp washing and screening process, it can quickly eliminate a large number of bubbles generated by fibers, chemicals, etc., improve the washing effect and screening efficiency of pulp, and reduce fiber loss. In wastewater treatment, it can effectively deal with bubbles generated by various complex water qualities, such as wastewater containing a large amount of surfactants and organic substances, and ensure the smooth operation of the wastewater treatment process.
- Long - lasting Foam Suppression: It not only can defoam quickly but also has good foam suppression performance. One addition can inhibit the re - generation of foam for a long time, reduce the number of additions of defoamer, and reduce the use cost.
- Good Chemical Stability: The organic silicon component determines that it has excellent chemical stability. It can play a stable role under different harsh conditions such as acid - base and high temperature, and it is not easy to chemically react with other substances in the system, and does not affect the final product quality or wastewater treatment effect.
- Good Compatibility: It can be better compatible with various chemicals in the pulp production process and wastewater treatment agents, and will not produce adverse phenomena such as precipitation and flocculation, ensuring the normal operation of production and treatment processes.
Applicable Scenarios
- Pulp Mills:
- Washing Link: When removing impurities, ink and other substances in pulp, eliminate bubbles generated by stirring, fiber friction, etc., make washing water easier to separate from fibers, and improve washing efficiency and quality.
- Screening Link: Prevent bubbles from affecting fiber classification, ensure that the quality of the screened fibers meets production requirements, and improve the quality of paper.
- Wastewater Treatment:
- Papermaking Wastewater: Treat wastewater generated in the papermaking process that contains a large amount of organic substances such as lignin and hemicellulose, effectively control bubbles, and ensure the normal operation of processes such as biochemical treatment and flocculation precipitation.
- Other Industrial Wastewater: For wastewater generated by industries such as food processing, printing and dyeing, and chemical industry, as long as there is a problem of bubbles, this defoamer can be used for treatment.
Usage Methods and Precautions
- Usage Methods: According to the foam generation, it can be added directly or after dilution. Generally, it is recommended that the dilution factor is 5 - 20 times, and the usage amount depends on the specific working conditions, usually between 10 - 100 ppm. When adding, it should be added to the foaming system evenly and slowly to ensure the maximum defoaming effect.
- Precautions: When storing, it should be placed in a cool and dry place, avoiding direct sunlight and high - temperature environments to prevent product deterioration. It should be used as soon as possible after opening. If it is stored for a long time, it is necessary to check whether the product has abnormal conditions such as delamination and discoloration before use. Before mixing with other chemicals, it is recommended to conduct a small - scale test first to ensure that no adverse reactions will occur.
