News
Foam formation during the production and application of acrylic anti-corrosion paint can compromise coating quality and anti-corrosion performance. Chemi Tech defoamers effectively suppress foam but require precise addition for optimal results. Here’s a technical guide:
The recommended dosage of Chemi Tech defoamer is 0.1%-0.5% of the total paint weight. Excessive amounts may cause craters or adhesion issues—small-scale tests are advised to determine the ideal ratio.
- Production Phase: Add after resin dispersion but before filler incorporation to ensure homogeneity.
- Pre-Application: If foam appears after storage, add 0.05%-0.1% with low-speed agitation.
Use a high-speed disperser at 800-1200 RPM for 10-15 minutes. Avoid excessive shear to prevent defoamer degradation.
- Craters: Reduce dosage or switch to a low-surface-tension variant.
- Stratification: Verify compatibility; pre-dilute the defoamer (e.g., 1:1 with propylene glycol) if needed.
Chemi Tech defoamers, with their stable chemical structure, suit high-viscosity systems and resist stratification during storage. Tailor the process to your paint formulation for bubble-free, smooth coatings.
Guangzhou Chemi Tech New Material Co., Ltd.
Address : No. 3 Road, Lanshan Village, Xiancun Town, Zengcheng District, Guangzhou City
Contact : +86-19820415595(Manager Fang)
Tel : +86-13414362583(Manager Lee)
E-mail : crystal@gzchemitech.com