Hydrophobic silicas comprise a unique group of materials that feature many types of advantageous properties and attributes. Their features make them suitable for a wide range of applications, including sealants, greases, adhesives, processing aids, and personal care products, among many others.
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This material functions as a kind of anti-caking substance to eliminate, reduce, or mitigate the risk of hardening or 'caking' within powders. It achieves this through moisture control (e.g. repellency) that helps to keep the particles consistently defined and separate, facilitating the free-flow of the powder.
Benefits of Using Hydrophobic Silica
If you're considering hydrophobic silica, this material features numerous benefits that make it crucial for an array of compounds. These key advantages include:
- Adsorbent ' Can adsorb liquids, solids, and gasses to create powder from liquids and pastes
- Anti-Blocking ' Keeps film sheets separate and prevents sticking
- Anti-Sagging ' Keeps wet coatings or paints from running or drooping
- Anti-Setoff ' Prevents the potential inadvertent transfer of ink between printed pages known as setoff
- Anti-Setting ' Helps increase the amount of time it takes for paint and pigments to dry on metallic and other surfaces when used with certain chemicals
- Free Flow of Powders ' Functions as an anti-caking agent that keeps powders from hardening or caking
- Foam Control ' Decreases foam levels or minimizes foam buildup
- Hydrophobicity Control ' Serves as a natural water repellent that causes water to form droplets
- Mechanical and Optical Properties Improvements ' Improves the transparency, clarity, and durability, among other material qualities
- Reinforcement ' Provides reinforcement for some materials' elastomeric properties
- Pigment Stabilization and Dispersion ' Facilitates the reliable application of certain types of complex pigments
- Print Definition ' Reduces the risk of smudging, runoff, and other issues that could otherwise compromise print clarity and definition
- Processability Improvements ' Enables increased processing along with application precision
- Rheology Control ' Maintains the consistency of products throughout containers or batches
- Thickening ' Increases the thickness of sealants, pigments, adhesives, and other types of liquid products to help improve application control and prevent running
- Thixotropy ' Thins compounds that are normally thicker, specifically through stirring, shaking, or disturbing these compounds using other methods
- Suspension and Stability Behavior ' Helps stabilize complex liquids while evenly suspending ingredient mixtures in batches
Hydrophobic Silica Free Flow Applications
Hydrophobic silica allows for the free flow and storage of a variety of powdered products, which are often prone to caking and hardening. The consensus for why this material has this effect is that hydrophobic silica forms a mono-particle silica layer around the particles within the powder. Subsequently, this layer helps reduce any 'inner friction' that could otherwise develop, creating a kind of ball-bearing effect. In turn, applications benefit from increased consistency of product throughout batches, minimizing the risk of potential issues during processing.
Many different industries use hydrophobic silica across a range of products and applications. Some of the different products that utilize hydrophobic silica include:
- Coatings and paint
- Animal nutrition and feed
- Printing inks
- Toners
- Powdered defoamers and antifoams
- PVC-based plastics
- Pharmaceuticals and cosmetics
- Tablet powder blends
- Plastic powders
- Fire extinguisher powder
- Polyester resins and gel coats
Industry Example: Tire Recycling
Hundreds of millions of tires are disposed of every year. If they are not recycled or reused, this can have a significant negative effect on the environment.
Contact us to discuss your requirements of high purity silica. Our experienced sales team can help you identify the options that best suit your needs.
The use of hydrophobic silica can help lessen the environmental impact of tire disposal by allowing for a more efficient recycling process. Specifically, hydrophobic silica helps during the grinding of the recycled tires into progressively smaller-sized granules. It assists with the free flow and particle screening of the granules, and imparts water repellency to help with moisture control.
Hydrophobic Silica Products from Applied Material Solutions
When selecting a hydrophobic silica, turn to Applied Material Solutions. We offer a wide variety of options, including fumed and precipitated products.
For more information about our silica products and other solutions, Contact Applied Material Solutions today or call our offices at 262-723-.
Hydrophobic silicas are a unique class of materials with a wide variety of functional attributes and beneficial properties making it ideal for numerous applications ranging from adhesives, greases, and sealants to personal care and processing aid products. At Applied Material Solutions, we offer high-quality fumed and precipitated hydrophobic silicas to provide superior performance for your products.
Benefits of Hydrophobic Silica
Hydrophobic silica has several different benefits that make it a crucial ingredient in many different compounds across diverse industries. These benefits include:
- Adsorbent. Hydrophobic silica adsorbs solid, liquid, and gaseous materials to easily convert liquids and pastes into powder. This allows for easier handling and dosing.
- Anti-Blocking. Its anti-blocking properties prevent film sheets from sticking together due to static or other interactions.
- Anti-Sagging. Hydrophobic silica increases sag resistance, making it especially useful for paints and coatings as it prevents them from drooping or running while wet.
- Anti-Setoff. Hydrophobic silica prevents setoff, or the accidental transfer of ink between printed pages. It can be used to create anti-setoff sprays and powders.
- Anti-Setting. It can be used in chemicals to slow pigment or paint dry times, especially on metallic surfaces. This is a key additive in paints and coatings, especially for use on larger or more complex projects that require more time for application.
- Free Flow of Powders. Hydrophobic silica acts as an anti-caking material to prevent powders from caking or hardening. It controls the moisture to keep each particle separate and defined for free-flowing distribution or use.
- Foam Control. Hydrophobic silica can be used as an active ingredient in defoamers, which reduce or minimize foam, making it ideal for adhesives, paints, food applications, and more.
- Hydrophobicity Control. Hydrophobic silica naturally repels water and forces it to form droplets. Adding this material to compounds allows manufacturers to enhance hydrophobicity control in a product.
- Mechanical and Optical Properties Improvements. Adding hydrophobic silica can improve the clarity, transparency, durability, and other attributes of materials.
- Reinforcement. Hydrophobic silica reinforces the elastomeric properties of certain materials. It can increase the material's tensile strength, resistance to tearing, and stabilization in the face of temperature changes.
- Pigment Stabilization and Dispersion. Adding hydrophobic silica to pigments can make the liquid material more stable and easier to disperse evenly. This allows for a more reliable application of complex pigments.
- Print Definition. Hydrophobic silica can reduce runoff, smudging, and other errors that reduce print definition and clarity. Inks with hydrophobic silica additives are clearer, crisper, and more precise.
- Processability Improvements. Carefully adding quantities of hydrophobic silica to pigments, inks, sealants, and personal care products allows for more precise application and better processing.
- Rheology Control. Hydrophobic silica can control the suspension of particles in water-based materials to ensure product consistency throughout the batch or container.
- Thickening. It can thicken pigments, sealants, adhesives, and other products to prevent running and poor application control.
- Thixotropy. Hydrophobic silica makes thick compounds thinner when they're shaken, stirred, or otherwise disturbed. This temporary fluidity allows for easier mixing and preparation.
- Suspension and Stability Behavior. Hydrophobic silica can stabilize complex fluid products and consistently suspend a mix of ingredients throughout the batch.
Choose Applied Material Solutions for Hydrophobic Silica
At Applied Material Solutions, our top-quality fumed and precipitated hydrophobic silicas offer reinforcement and enhanced performance for products across a diverse range of industries. Our state-of-the-art treated silica production facility allows us to produce large volumes and reduce delivery times for our customers. To learn more about the properties and applications of hydrophobic silica, check out our product page today.