FoamStar SI2250

Product Details

CasNo： 9006-65-9

Appearance： liquid

Delivery Time： 15 days

Packing： 200kg/drum

Purity： 99%

I. Basic Information

• Product Type: Defoamer
• Brand & Model: FoamStar SI2250
• Core Ingredient: Modified Polydimethylsiloxane. Through chemical modification of polydimethylsiloxane, specific functional groups are introduced to optimize its molecular structure, enhancing its compatibility with water - based coating systems and defoaming performance.
• Packaging Specification: Common packaging specifications include 25 kg/barrel and 200 kg/barrel. It is packaged in plastic barrels or iron barrels with good sealing performance to prevent the product from being contaminated, volatilized or leaked during transportation and storage.

II. Core Features

1. Wide Applicability to Water - Based SystemsSuitable for various water - based coating systems, such as acrylic water - based coatings, water - based alkyd coatings, water - based polyurethane coatings, etc., as well as water - based color pastes. It can play a stable role in complex water - based formulations composed of different resin systems, pigments and fillers, and will not have adverse reactions with other components in the system, ensuring that the chemical stability and physical properties of coatings and color pastes are not affected.

2. High Shear StabilityIn the coating production process, such as high - speed stirring, grinding and dispersion under high shear force environment, FoamStar SI2250 can still maintain stable chemical structure and defoaming performance. It will not undergo demulsification, delamination and other phenomena due to high shear force, ensuring that foam can be effectively inhibited in the coating preparation stage, and avoiding foam affecting key production links such as pigment dispersion and system uniformity.

3. Efficient Instant Defoaming and Long - Lasting Foam Inhibition

• Instant Defoaming: In the coating construction process, whether it is foam generated during spraying, brushing or roller coating, this defoamer can quickly spread to the foam surface, reduce the surface tension of the foam liquid film, make the foam break quickly, ensure the smoothness of the coating film, avoid defects such as pinholes and bubbles, and improve the appearance quality of coating.
• Long - Lasting Foam Inhibition: During coating processing (such as stirring, pumping, etc.) and storage, it can continuously inhibit the regeneration of foam. Even if it is placed for a long time or in an environment with changing temperature and humidity, it can effectively prevent foam from being generated again due to system flow, gas escape and other reasons, and extend the effective storage and service life of coatings.

4. Low Dosage and Good Preservation of Paint Film PerformanceThe conventional dosage is only 0.05%–0.3% of the total system mass to achieve the ideal defoaming effect. After addition, it will not have a negative impact on key paint film properties of water - based coatings, such as gloss, adhesion, hardness, water resistance and weather resistance. On the contrary, it helps to improve the construction performance of coatings, make the paint film more uniform and dense, and enhance the protective and decorative effects of the paint film.

III. Application Fields

IV. Usage Recommendations

1. Addition TimingIt is recommended to add the defoamer in the paint mixing stage of the coating formula, that is, after the resin, pigment, filler and other components are fully mixed evenly, add the defoamer slowly while stirring to ensure that it is evenly dispersed into the system. If a large amount of foam has been generated during production, a small amount of defoamer can be taken for local defoaming first, and then added according to the recommended dosage.

2. Recommended Dosage

• Water - based coatings: 0.1%–0.3% (of the total system mass);
• Water - based color pastes: 0.05%–0.2% (of the total system mass).Before first use, it is recommended to conduct a small - scale formula test to determine the optimal dosage to achieve a balance between the best defoaming effect and paint film performance.

3. Operation PrecautionsWhen adding the defoamer, the stirring speed should not be too fast, generally controlled at 200–400 rpm, so as to avoid damaging the molecular structure of the defoamer due to high - speed shearing and affecting the defoaming effect. If other additives are used at the same time, pay attention to the addition sequence, avoid direct contact with strongly alkaline or strongly acidic additives, and it is recommended to add them at an interval of 15–30 minutes to prevent chemical reactions that cause additive failure.

V. Storage and Safety

• Storage Conditions: Store in a cool, dry and ventilated warehouse, avoiding direct sunlight and high - temperature environments. The storage temperature should be controlled at 5℃–35℃. The shelf life of unopened products is usually 12–24 months. After opening, use it as soon as possible and seal the packaging container tightly to prevent the product from absorbing moisture or being contaminated.
• Safety Tips: It is recommended to wear protective gloves and goggles during operation to avoid contact between the product and skin and eyes. If it accidentally comes into contact with the skin, rinse immediately with plenty of water; if it comes into contact with the eyes, rinse immediately with plenty of water and seek medical attention. This product is not a dangerous chemical and should be transported and stored as an ordinary chemical product. For details, refer to the MSDS Safety Data Sheet.