Overview
Hydrogen-containing silicone oil emulsion additive is a modified polysiloxane with reactive Si-H bonds, emulsified for easy water-based application. It combines the benefits of silicone oils (e.g., flexibility, water repellency) with crosslinking capabilities, making it indispensable in industries requiring durable surface modification. First developed in the 1970s, this additive addresses the need for eco-friendly alternatives to solvent-based silicones. Its emulsion form ensures safer handling and compatibility with aqueous systems, aligning with modern environmental regulations.
Physical and Chemical Properties
The additive exhibits low surface tension (20–25 mN/m) and high thermal stability (up to 200°C). The Si-H bonds enable reactions with hydroxyl or vinyl groups under catalysts like platinum, forming robust networks. Emulsions typically contain 30–60% active content with particle sizes under 1 µm for uniform dispersion. Key metrics include hydrogen activity (measured by H2 evolution) and emulsion stability (resistance to creaming/sedimentation for 6+ months). Its pH-neutral nature minimizes corrosion risks in processing equipment.
Main Applications
In textiles, it imparts softness and wrinkle resistance while reducing fiber friction. Paper coatings leverage its hydrophobicity to enhance water resistance without compromising printability. Cosmetic formulations use it as a conditioning agent for hair/skin due to its non-greasy feel. Industrial uses include mold release agents (reacting with surfaces to form anti-stick layers) and antifoam components. Emerging applications encompass ceramic glazes and battery separator coatings, where its thermal stability is critical.
Safety and Storage
While generally low-hazard, the emulsion may cause mild irritation upon prolonged skin contact. Spills should be contained with absorbents (e.g., sand) and cleaned with water. Storage requires protection from extreme temperatures—freezing breaks the emulsion, while heat accelerates Si-H decomposition. Catalysts (e.g., metal salts) can trigger premature crosslinking; thus, compatibility testing with other formulation ingredients is advised. Transport regulations typically classify it as non-dangerous goods.
B2B Procurement Guide
Buyers should prioritize suppliers who provide technical datasheets with quantified Si-H content and emulsion stability data. Bulk purchases (≥1 ton) often qualify for 10–15% discounts. For textile applications, verify compatibility with cationic/anionic systems used in dyeing baths. Sample testing should assess performance under intended processing conditions (e.g., curing temperatures). Eco-certifications (e.g., OEKO-TEX®) are valuable for export-oriented manufacturers. Lead times average 2–4 weeks for custom formulations.
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