Serbuk Hidrofobik Silikon (SHP): Penghalang Kalis Air Tahan Lama untuk Bahan Binaan
2025-11-14 18:02Silicone Hydrophobic Powder (SHP) is a highly effective water-repellent agent, typically based on siloxane chemistry. As a powder additive, SHP is widely incorporated into dry-mix mortars, putties, and specialty cement products to significantly reduce the material’s water absorption and capillary suction. By forming a microscopic hydrophobic layer, SHP Powder imparts long-lasting Hydrophobic Performance and excellent Freeze-Thaw Resistance to building materials, making it crucial for enhancing construction durability.
1. The Mechanism and Chemical Basis of SHP
Silicone Hydrophobic Powder is generally composed of high molecular weight Polysiloxanes processed through adsorption and drying technologies.
Core Mechanism: Capillary Hydrophobization
When SHP Powder is introduced into the mortar and mixed with water, the hydrophobic silicone molecules are released and evenly distributed along the capillary walls and pore surfaces of the cement matrix.
Hydrophobic Layer Formation: The silicone molecules react chemically with silicates and hydration products in the matrix (typically under alkaline conditions), forming a tightly bound Siloxane Hydrophobic Layer on the internal surfaces.
Reduced Surface Tension: This hydrophobic layer dramatically alters the surface energy within the pores, preventing water droplets from wetting the material. The capillaries are effectively "closed," thus blocking the pathway for water to be drawn into the material through capillary action.
2. Four Core Functional Keywords of Hydrophobic Powder
The functions of SHP Powder are centered on water protection and durability, key to achieving long-term material performance:
| Keyword | Technical Contribution | Application Value |
| Hydrophobic Performance | SHP Powder chemically changes the capillary walls from hydrophilic to hydrophobic, drastically reducing the material's water uptake. | Protects buildings from moisture ingress, preventing mold growth, efflorescence, and salt leaching. |
| Water Impermeability | While primarily a water repellent, the effective sealing of capillary channels by SHP indirectly improves the material's Water Impermeability under low-pressure conditions. | Suitable for structures requiring moisture and seepage protection, such as basements, tunnels, and tanks. |
| Freeze-Thaw Resistance | By preventing water from being absorbed and retained in the pores, the material avoids volume expansion damage caused by freezing water, thereby enhancing Freeze-Thaw Resistance. | Extends material lifespan in cold climates, maintaining strength and integrity. |
| Long-Term Durability | Protects the material from attack by water and water-soluble harmful substances (e.g., chlorides, SO₄²⁻), significantly increasing the Long-Term Durability of the construction material. | Ideal for demanding exposure environments like bridges, marine structures, and exterior façades. |
3. Application Areas of Silicone Hydrophobic Powder
SHP Powder is the preferred additive for high-performance waterproof and moisture-proof material formulations:
Waterproof Mortar: Used for rendering in roofs, basements, and wet areas, providing core Water Impermeability and Hydrophobic Performance.
Dempul Luaran dan Kemasan:Digabungkan ke dalam salutan luaran dan dempul untuk mengelakkan penembusan air hujan dan substrat meningkat lembap, meningkatkan dindingPrestasi Hidrofobik.
Mortar Meratakan Sendiri:Meningkatkan keupayaan kalis lembapan bahan lantai, terutamanya untuk aplikasi lantai bawah dan subgred.
Produk Simen Khas:Seperti jubin simen, penurap telap, dan bata turapan berwarna, menambah baiknyaRintangan beku-cairdanKetahanan Jangka Panjang.
4. Kesimpulan dan Komitmen Perkhidmatan Berkualiti
Serbuk Hidrofobik Silikon (SHP) menyediakan stabil dan sangat berkesanPrestasi Hidrofobikkepada bahan binaan moden melalui mekanisme kimianya yang unik, berfungsi sebagai jaminan asas untuk mencapai seni bina yang berkekalanKetahanan Jangka Panjang.
Komitmen Kami terhadap Kualiti dan Perkhidmatan
Kami berdedikasi untuk membekalkan prestasi tinggiSerbuk SHPproduk, mengawal ketat kandungan dan pengedaran saiz zarah bahan aktif silikon untuk memastikanketerserakan yang sangat baik dan kesan hidrofobikmerentasi pelbagai sistem mortar. Pasukan sokongan teknikal kami pakar dalam menangani cabaran kalis air dan kawalan kelembapan pelanggan dalam persekitaran lembap dan projek ketahanan tinggi, memastikan kamiSerbuk SHPmemaksimumkan bahanRintangan beku-cairdanKetidaktelapan Air.
