1 / 6

Know How Molecular Defoamers Work

Shah Patil & Company is the Best Defoamers Manufacture & Exporter in Maharashtra, India. We Export our Defoamer products in Affordable price. Contact Now Visit www.puredefoamer.com

shahpatil
Download Presentation

Know How Molecular Defoamers Work

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MolecularDefoamers

  2. Know How Molecular Defoamers Work The defoamer should overcome the stabilizing effect of the surfactants and remove the air. These are formulated to be conflicting with the surfactant layer interface. Defoamers are low-surface-tension liquids, having controlled incompatibility or insolubility, positive entering coefficient to enter the lamella and positive spreading coefficient to spread across the lamella. Defoamers should be distributed as hydrophobic droplets in the formula.

  3. Once the defoamer droplet spreads across the lamella, it disturbs the surfactant stabilization, letting the water to drain from the lamella, resulting in thinning of the bubble layer and eventual breaking of the bubble. Another key characteristic of defoamer, in addition to the surface tension for effective performance of defoamer, is that the defoamer can be spread in the liquid being defoamed to the correct and effective droplet size.

  4. Five main methods of defoaming activity: • Hydrophobic solid • In-situ formation of hydrophobic solids • Competition for surfactant • Low-surface-tension liquids • Antagonistic surfactants/polymers. Molecular defoamers fall into antagonistic surfactants/polymers. This technology is successful because to form a rigid film rather than an elastic film in the lamella wall, the defoaming molecule interacting with other surfactants in the coating. This is achieved by a repulsive interaction occurring between the surfactant chains.

  5. Thus, the lamella area surrounding the bubble does not stretch and is more prone to burst open and release the air. As a result, the difficulty in finding effective and efficient defoamers is to balance this incompatibility needed in the coating system, with the defoamer’s ability to overcome the stabilizing effect of surfactants, without causing any defects in the coating system, such as craters, crawling, colorant separation, etc. This is the way molecular defoamer work to go against surfactants in a paint coating. Contact the Defoamer Manufactureras early as possible to help your work process free of foam.

  6. Pure Defoamer Address:89, Mahaveer Nagar, Oil Lane Sangli : 416416, Maharashtra. India1 Mobile : +91 - 94224-08095 Email:shahpatilexports@gmail.com shahpatil@gmail.com Website:www.puredefoamer.com

More Related