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Prodcuct Overview
SW-20 is a silicone agent powder used in various cement mortars that need to reduce water absorption and improve water repellency. Performance: effectively reduce the water absorption rate of the material, making the material "hydrophobic" while maintaining the material's "breathing" performance, without affecting the material's construction performance and having no adverse effect on the material's mechanical properties.
What is Hydrophobic Agent?
Hydrophobic Agent is a high-performance additive designed to reduce water absorption in cement, mortar, gypsum, and other building materials. By forming a hydrophobic layer within the matrix, it prevents capillary water penetration while maintaining the breathability of the substrate.
The use of Hydrophobic Agent provides key benefits: enhanced durability, improved resistance against efflorescence, reduced risk of cracks caused by moisture, and longer service life of construction materials. It also contributes to better surface finishes and reduced maintenance costs.
For projects exposed to moisture, rain, or harsh environments, Hydrophobic Agent ensures long-lasting protection, superior quality, and reliable performance—making it an indispensable solution for modern construction.
Advantages
SW-20 can effectively reduce the water absorption of the material, giving the mortar surface a lotus leaf bead effect.
Technical Data
| Appearance | White powder |
| Bulk density | 300-500kg/m3 |
| Recommended dosage (relative to dry powder) | 0.1-0.5% |
Free Samples are Available!
Discover the superior performance of SUNBO’s construction chemical additives today! Request your free sample and test their quality in real applications. Experience how our products enhance workability, durability, and efficiency in your projects.
Factory Strength

Advanced Distributed Control System

R&D Center

Modern Production Facilities

Shandong Plant

Suzhou Plant

Automated Production
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+86 137 7191 2518
Xinhua Industrial Park, Wangting Town, Xiangcheng Dist, Suzhou City, Jiangsu, China.
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