Silicone gel for cosmetic conductors mainly uses vinyl silicone oil (Vi-PDMS/Vi-PMVS) as the base polymer, combined with hydrogen-containing silicone oil as a crosslinking agent, and conductive fillers to achieve electrical conductivity.
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Chemical Structure: Polydimethylsiloxane (PDMS) terminated with vinyl groups (-CH=CH₂) at both ends.
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Characteristics: Colorless and transparent, low viscosity (100-100000cps), excellent flexibility and chemical stability.
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Function: Forms the elastic network structure of the silicone gel, providing good skin adhesion and comfort.
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Usage Amount: Accounts for approximately 60-80% of the formula, serving as the primary component.
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Characteristics: Contains Si-H bonds in the molecule, which can undergo crosslinking reactions with vinyl groups under the action of a platinum catalyst.
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Function: Forms a three-dimensional network structure with vinyl silicone oil, determining the hardness and elasticity of the gel.
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Ratio: The mass ratio to vinyl silicone oil is usually (0.2-5):100.
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Types: High-hydrogen or low-hydrogen silicone oil can be selected to adjust crosslinking density.
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Dimethylsiloxane (PDMS): Sometimes added as a plasticizer to improve gel softness.
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Hydroxyl-Containing Silicone Oil: Enhances affinity and adhesion to the skin.
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Alkoxy-Containing Silicone Oil: Improves system stability and processing performance.
Ordinary beauty device conductive gel (for microcurrent/RF devices) is usually a water-based formula without silicone oil:
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Main Components: Water, Glycerin, Propylene Glycol, Sodium Hyaluronate, Electrolytes (NaCl/KCl)
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Conductive Principle: Relies on free ions generated by electrolyte dissociation for conductivity
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Characteristics: Refreshing and non-greasy, easy to clean, suitable for daily beauty device use
Silicone-Based Conductive Gel:
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Main Components: Silicone Oil + Crosslinking Agent + Conductive Filler
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Conductive Principle: Relies on the physical conductive network formed by conductive fillers
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Characteristics: Long-lasting lubrication, high-temperature resistance, suitable for special medical or industrial applications
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Medical Aesthetic Equipment:
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Professional RF treatment equipment (requires high-temperature resistance)
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Skin electrophysiological monitoring electrode patches
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Special high-conductivity gel for microcurrent shaping devices
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Special Cosmetics:
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Conductive facial masks (for iontophoresis)
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Smart beauty instrument accessories (e.g., conductive contacts)
For preparing cosmetic conductive silicone gel, select:
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Base Silicone Oil: Vinyl-Terminated Polydimethylsiloxane (Vi-PDMS) with a viscosity of 1000-10000cps and a vinyl content of 0.02-0.5mmol/g
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Crosslinking Agent: Hydrogen-Containing Silicone Oil (e.g., MQ type) to control crosslinking density
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Conductive Filler: Silver Powder (best conductivity) or Carbon Nanotubes (lower cost) with an addition amount of 30-50%
Note: For ordinary beauty devices, it is recommended to use commercially available water-based conductive gel instead of silicone-based products, as the latter may affect instrument performance and clog pores.
The core silicone oil for cosmetic conductive silicone gel is vinyl silicone oil (Vi-PDMS/Vi-PMVS), supplemented by hydrogen-containing silicone oil for crosslinking to form an elastic network, and conductive fillers to achieve conductive function. It is essentially different from ordinary water-based conductive gel for beauty devices and is suitable for specific medical aesthetic equipment and high-end conductive beauty products.
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