April 02, 2024
Application Of Silicone Powder Treatment Agents In Cosmetics
The main principles of silicone surface treatment:
The hydroxyl groups on the surface of inorganic powders are usually hydrophilic and incompatible with organic polymers. Silicone surface treatment can reduce the surface energy of inorganic powders, reduce agglomeration between powder particles, and make them more compatible with polymers and easier to disperse.
The diagram is as follows:
Schematic of silicone surface treatmentSilicone products mainly play two roles:
Improve the dispersion of aggregates.
Improves polymer-powder compatibility thereby improving wetting.
The role of silicone surface treatment:
Products treated with silicone tend to have better dispersion, temperature resistance and hydrophobicity. It mainly achieves the above effects through the following methods:
Improve the adhesion between powder and polymer.
Strengthen the wetting of the powder by the polymer.
Improve the dispersion of powder in polymer.
Improve electrical properties and improve mechanical properties.
Reduce the viscosity of the powder/polymer mix.
Common Silicones Applications in Powder Processing
Common silicones used in powder processing and their characteristics
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Silicone Type
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Characteristics
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Silanes
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Small molecules that are reactive and do not migrate. Often used for product handling with higher requirements
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Hydrogen silicone oil
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Excellent reactivity and water repellency
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Hydroxy silicone oil
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Has certain reactivity, temperature resistance and dispersibility
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Emulsion products
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Modified silicone oil emulsions and their mixtures, different additives can be added according to requirements. Lotion products are easy to use, environmentally friendly, cost-effective and efficient
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Nanjing Manta New Material Co., Ltd.