Antenna and Radome Coatings

• protective coatings for antennas, satellite dishes, and radomes • used on telecom towers, broadcast systems, and satellite infrastructure Why: Maintains a smooth, uniform surface while protecting against moisture, UV exposure, and environmental wear without interfering with signal transmission.

Electronic Enclosures and Housings

• coatings for telecom equipment boxes, junction enclosures, and outdoor cabinets Why: Improves durability, corrosion resistance, and long term stability in harsh outdoor environments, including temperature swings and humidity.

Cable and Connector Coatings

• protective coatings on communication cables and connection points Why: Helps prevent moisture ingress and surface degradation, which can impact signal integrity and lifespan.

Circuit Board and Component Protection (Conformal Coatings)

• thin protective layers applied to sensitive electronic components Why: Provides moisture resistance and environmental shielding while maintaining consistent coverage and avoiding defects that could impact performance.

Satellite and Aerospace Communication Components

• coatings used on communication hardware exposed to extreme conditions Why: Supports long term durability, thermal stability, and surface reliability in demanding environments.

• Protective coatings for diagnostic and analytical test strips • Used in medical diagnostics, environmental testing, and laboratory analysis Why: Maintains a controlled, moisture-resistant surface that protects sensitive reagents from humidity and environmental exposure. Helps preserve accuracy, consistency, and shelf life without interfering with fluid absorption or test performance.

PRODUCTS | Tulco

Products

Tulco offers a comprehensive portfolio of surface modified precipitated silica products to support a wide range of applications and performance requirements. Below you will find a list of our available products. Technical data sheets are available upon request and provide detailed information on physical and chemical properties, recommended uses, handling guidance, and performance characteristics.

For technical data sheets, additional product information, or application support, please contact Tulco directly.

HMDS / HMDZ Treated Hydrophobic Silica

Tulco Inc develops HMDS treated hydrophobic precipitated silica designed for applications where moisture resistance, powder flow, and compatibility with organic systems are critical. By modifying the silica surface with hexamethyldisilazane, surface silanol groups are replaced with trimethylsilyl functionality, creating a highly hydrophobic and organophilic material.

With more than fifty years of experience in silica surface modification, Tulco supports formulators working across coatings, elastomers, adhesives, and powder systems. Tulco products are engineered to deliver consistent performance, reliable dispersion, and predictable behavior in both processing and end use environments.

What Makes HMDS Treated Silica Different

HMDS treated precipitated silica combines the structural benefits of precipitated silica with a highly hydrophobic surface.

This results in:

strong moisture resistance
improved compatibility with organic resins and polymers
reduced water adsorption
enhanced powder flow and handling
controlled rheology without excessive thickening

Compared to other silica types, HMDS treated silica offers a balance between performance and processability. It delivers hydrophobic functionality without the aggressive thickening behavior commonly seen with fumed silica.

Key Applications of HMDZ Treated Silica

One of the most effective uses of HMDS treated silica is in dry powder systems. Used in: • powdered resins • powdered coatings • powdered metals • pigments and specialty chemicals • Performance benefits: • prevents caking in humid environments • reduces interparticle friction • improves flowability and handling • maintains consistent dosing and processing The hydrophobic surface minimizes moisture uptake, allowing powders to remain free flowing during storage and transport.

In silicone elastomers, HMDS treated silica functions as a reinforcing and processing aid. Used in: • RTV sealants • silicone adhesives • silicone rubber compounds • Performance benefits: • viscosity control • improved extrusion behavior • enhanced moisture resistance • better compatibility with siloxane systems This allows formulators to maintain performance while improving processing stability.

HMDS treated silica provides hydrophobic functionality in adhesive and sealant systems without excessive viscosity build. Used in: • polyurethane adhesives • hybrid polymer sealants • construction adhesives Functions: • anti settling support • moderate rheology control • improved moisture resistance It is often selected when formulators need balance between flow and stability.

• Hydrophilic precipitated silica focuses on absorption and reinforcement • HMDS treated precipitated silica excels in hydrophobic powder flow and compatibility • PDMS treated silica is commonly used for slip and surface effects • Hydrophobic fumed silica delivers strong rheology and anti sag performance • HMDS treated silica fills a critical middle ground by offering hydrophobic performance with easier processing and lower cost.

Tulco Inc develops surface modified hydrophobic precipitated silica designed for coating systems where moisture resistance, surface control, and long term durability are essential. Through advanced surface treatment technologies, Tulco silica products are engineered to integrate effectively into a wide range of coating formulations while maintaining consistent performance and processing behavior. Why Hydrophobic Silica in Coatings Hydrophobic surface treatment transforms precipitated silica into a highly compatible additive for organic coating systems. This results in: • reduced moisture sensitivity in coatings • improved dispersion in solvent based and waterborne systems • enhanced surface performance and durability • controlled rheology without excessive thickening • improved storage stability Hydrophobic silica plays a key role in maintaining coating consistency from production through application and long term use.

PDMS Treated Hydrophobic Silica

Tulco Inc develops PDMS treated hydrophobic precipitated silica designed for applications where surface slip, gloss control, and moisture resistance are essential. By coating precipitated silica with polydimethylsiloxane, the surface energy is reduced, creating a highly compatible, organophilic material that performs effectively in coatings, polymers, and powder systems.

What Makes PDMS Treated Silica Different

PDMS treated precipitated silica combines the porous structure of precipitated silica with a silicone based surface treatment.

This results in:

strong surface slip and reduced friction
enhanced compatibility with organic and silicone systems
controlled gloss and matting performance
moisture resistance
moderate rheology control without excessive thickening

Compared to other silica types, PDMS treated silica is optimized for surface performance rather than strong structural thickening. It is often selected when formulators need balance between flow, finish, and stability.

Key Applications of PDMS Treated Silica

One of the most widely used applications for PDMS treated silica is in coatings where gloss control is critical. Used in: • architectural paints • industrial metal coatings • wood coatings • appliance finishes • aerospace interior coatings Performance benefits: • creates micro surface roughness for gloss reduction • improves scratch resistance • enhances dispersion in coating systems • maintains lower viscosity compared to traditional matting agents

PDMS treated silica is commonly used in adhesive and sealant systems where controlled flow and surface performance are needed. Used in: • construction sealants • silicone sealants • hybrid polymer systems • pressure sensitive adhesives Functions: • anti settling support • moderate viscosity control • surface slip improvement • more consistent dispensing behavior The PDMS surface treatment provides strong compatibility with silicone based systems.

• Hydrophilic precipitated silica focuses on absorption and reinforcement • HMDS treated precipitated silica excels in hydrophobic flow and moisture resistance • PDMS treated precipitated silica specializes in surface slip and matting • Hydrophobic fumed silica delivers strong rheology and anti sag control PDMS treated silica is often selected when surface finish and flow behavior are more important than structural thickening.

Tulco Inc develops surface modified hydrophobic precipitated silica designed for coating systems where moisture resistance, surface control, and long term durability are essential. Through advanced surface treatment technologies, Tulco silica products are engineered to integrate effectively into a wide range of coating formulations while maintaining consistent performance and processing behavior. Why Hydrophobic Silica in Coatings Hydrophobic surface treatment transforms precipitated silica into a highly compatible additive for organic coating systems. This results in: • reduced moisture sensitivity in coatings • improved dispersion in solvent based and waterborne systems • enhanced surface performance and durability • controlled rheology without excessive thickening • improved storage stability Hydrophobic silica plays a key role in maintaining coating consistency from production through application and long term use.

TULLANOX LC Hydrophobic Coatings

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TULLANOX LC410 is a surface modified hydrophobic silica designed to improve the performance, consistency, and durability of coating systems. By reducing surface energy and enhancing compatibility with organic formulations, LC410 allows manufacturers to create coatings that resist moisture, apply smoothly, and maintain long term stability across a wide range of environments.

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Why TULLANOX LC410

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TULLANOX LC410 enables formulators to build coatings that perform reliably from production through end use. Its hydrophobic treatment helps coatings repel water, reduce surface defects, and maintain uniform performance without negatively impacting application properties.

This results in:

improved water resistance and reduced moisture sensitivity
smoother film formation with better surface finish
consistent dispersion in both solvent based and waterborne systems
controlled rheology without excessive thickening
enhanced durability and resistance to environmental exposure
improved storage stability and shelf life

TULLANOX LC410 supports the development of coatings that are easier to apply, more reliable in the field, and more consistent over time, helping manufacturers deliver higher quality products with fewer formulation challenges.

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In the communications industry, TULLANOX coatings are used in applications where signal reliability, environmental protection, and surface consistency are critical, particularly for equipment exposed to outdoor or high performance conditions.

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TULLANOX LC410 Applications

• Protective coatings for paper, cardboard, and flexible packaging materials • Used in food packaging, industrial goods, and moisture-sensitive product storage Why: Creates a hydrophobic barrier that reduces moisture penetration and environmental damage while maintaining material integrity and appearance. Helps extend product shelf life, prevent warping or degradation, and improve durability during storage and transport.

Overall Role in Communications

TULLANOX coatings help ensure that communication systems remain:

reliable in outdoor and high exposure environments
protected from moisture, corrosion, and surface degradation
consistent in surface quality to avoid interference or performance loss

In this space, the focus is on functional protection and long term performance, where coating consistency and environmental resistance directly impact system reliability.

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Key Benefits of Hydrophobic Coatings

Tulco as a Supplier Across Applications

Tulco is a global silica supplier supporting manufacturers across adhesives and sealants, coatings and paints, epoxies and thermoset systems, electronics, construction materials, powdered metals and dry blends, textiles and fibers, and defoamer applications. With more than fifty years of experience in silica surface modification, Tulco delivers consistent, high performance materials designed to meet the demands of modern formulations.

Working with Tulco is built around reliability, clarity, and ease. Our team partners directly with formulators, engineers, and purchasing teams to ensure every product meets exact specifications and performs consistently from batch to batch. We understand that production timelines and material consistency are critical, which is why we prioritize clear communication, accurate lead times, and responsive support throughout every stage of the process.

Tulco coordinates logistics through dedicated trucking and established transportation systems to ensure dependable, on time delivery. Whether supporting large scale manufacturing or specialized production runs, we provide a stable and reliable supply chain that helps customers avoid delays and maintain operational efficiency.

From standard product supply to custom treated silica development, Tulco offers flexible solutions tailored to your application. Our team is equipped to develop materials that align with specific performance requirements, processing conditions, and end use environments, helping customers simplify formulation challenges and improve overall product performance.

Work With Tulco

Tulco combines decades of experience, technical expertise, and dependable logistics to support customers across a wide range of industries and applications.

Contact Tulco to discuss your application, request technical data sheets, or develop a custom treated silica solution tailored to your formulation and production needs.

Address

9 Bishop Road

Ayer MA 01432

Phone

978-772-4412

Email

customerservice.tulco@hotmail.com

Products

HMDS / HMDZ Treated Hydrophobic Silica

What Makes HMDS Treated Silica Different

Key Applications of HMDZ Treated Silica

Powder Flow Aids and Anti Caking

Powder Coatings

Silicone Rubber and RTV Systems

Plastics and Polymer Systems

Adhesives and Sealants

Agricultural and Chemical Powders

Compared to other silica technologies

Hydrophobic Silica for Coatings

PDMS Treated Hydrophobic Silica

What Makes PDMS Treated Silica Different

Key Applications of PDMS Treated Silica

Matte and Satin Coatings

Powder Coatings

Printing Inks

Plastics and Polymer Systems

Adhesives and Sealants

Powdered Materials and Flow Aids

Compared to other silica technologies

Hydrophobic Silica for Coatings

TULLANOX LC Hydrophobic Coatings

Why TULLANOX LC410

TULLANOX LC410 Applications

Antenna and Radome Coatings

Electronic Enclosures and Housings

Cable and Connector Coatings

Circuit Board and Component Protection (Conformal Coatings)

Satellite and Aerospace Communication Components

Test Strips

Packaging

Overall Role in Communications

Key Benefits of Hydrophobic Coatings

Moisture Resistance and Stability

Surface Control and Finish

Rheology and Application Behavior

Dispersion and Compatibility

Coating Applications

Tulco as a Supplier Across Applications

Work With Tulco

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Phone

Email

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