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Raw material and additive for industries which include high thermal stability, low chemical reactivity, water repellency, and flexibility over a wide range of temperatures

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Polydimethylsiloxane (PDMS)

is a type of silicone polymer, a silicon-based organic polymer composed of repeating units of dimethylsiloxane. It is one of the most widely used silicone elastomers due to its unique properties. Here are some key aspects of polydimethylsiloxane (PDMS):

  1. Chemical Structure: PDMS consists of a linear chain of alternating silicon and oxygen atoms, with two methyl (CH3) groups attached to each silicon atom. This structure gives PDMS its flexibility, low surface energy, and inertness.

  2. Physical Properties: PDMS is a clear, odorless, and non-toxic liquid at room temperature. It has excellent thermal stability, remaining stable over a wide range of temperatures, from -50°C to 200°C or higher. PDMS is also highly resistant to oxidation, moisture, and UV radiation.

  3. Low Surface Tension: PDMS exhibits low surface tension, which imparts water repellency and non-stick properties. This makes it useful in various applications such as coatings, lubricants, and release agents.

  4. Elasticity and Flexibility: PDMS is highly elastic and flexible, with a rubber-like consistency. It can undergo significant deformation without permanent damage and can return to its original shape after deformation. This property makes PDMS suitable for use in flexible molds, gaskets, and seals.

  5. Biocompatibility: PDMS is biocompatible and widely used in medical and biomedical applications. It is commonly used in medical devices, such as catheters, tubing, and implants, as well as in microfluidic devices and laboratory equipment.

  6. Viscoelastic Properties: PDMS exhibits viscoelastic behavior, meaning it behaves both as a viscous fluid and an elastic solid under different conditions. This property makes it useful in damping and vibration isolation applications.

  • Silicone Oils Polydimethylsiloxane (PDMS) 2CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 5CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 10CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 50CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 100CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 350CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 1000CS

  • Silicone Oils Polydimethylsiloxane (PDMS) 12500CS

Silicone Emulsion 

A stable dispersion of silicone oil droplets in water, typically stabilized with surfactants or emulsifiers. Silicone emulsions are widely used in various industries for their unique properties and versatility. Here are some key points about silicone emulsions:

  1. Composition: Silicone emulsions consist of silicone oil dispersed in water. The silicone oil, usually polydimethylsiloxane (PDMS), is the dispersed phase, while water serves as the continuous phase. Emulsifiers or surfactants are added to stabilize the emulsion and prevent the silicone droplets from coalescing or separating.

  2. Types of Silicone Emulsions: Silicone emulsions come in various forms, including cationic, anionic, non-ionic, and amphoteric, depending on the type of surfactant used and the desired application. Each type of emulsion offers specific properties and benefits.

  3. Applications: Silicone emulsions find numerous applications across different industries:

    • In the textile industry, silicone emulsions are used as softeners and lubricants for fabrics, imparting a soft and smooth feel to textiles and improving their tear resistance.

    • In the personal care and cosmetics industry, silicone emulsions are used in skincare products such as lotions, creams, and hair conditioners to provide smoothness, emollience, and moisture retention.

    • In the paper industry, silicone emulsions are used as release agents and anti-foaming agents during the papermaking process.

    • In the construction industry, silicone emulsions are used as water repellents and sealants to protect building materials such as concrete, masonry, and wood from moisture damage.

    • In the automotive industry, silicone emulsions are used as mold release agents, lubricants, and anti-corrosion coatings for automotive components.

  4. Benefits: Silicone emulsions offer several advantages, including:

    • Enhanced lubrication and smoothness

    • Water repellency

    • Heat and chemical resistance

    • Non-toxicity and biocompatibility (in certain formulations)

    • Stability over a wide range of temperatures and pH levels

  • OWT Silicone Emulsion RS35 (35-36%)

  • OWT Silicone Emulsion RS60 (60-62%)

Silicone Mold Release

Mold release agents are coatings or sprays used to prevent adhesion between the surface of a mold and the material being molded. These agents form a thin, low-friction layer on the mold surface, facilitating the easy removal of the molded part without damaging it or the mold itself. Here are some key aspects of silicone mold release agents:

  1. Composition: Silicone mold release agents are typically silicone-based formulations containing silicone oils, solvents, carriers, and additives. The silicone oils provide the lubricating properties necessary for easy release, while the solvents and carriers help deliver the product evenly onto the mold surface.

  2. Application: Silicone mold release agents can be applied to various types of molds, including metal, plastic, rubber, and composite molds. They are typically applied using spray guns, brushes, rollers, or dipping methods. The application method depends on the type of mold and the specific requirements of the molding process.

  3. Benefits: Silicone mold release agents offer several benefits:

    • Facilitate easy release of molded parts, reducing the risk of damage or distortion during demolding.

    • Improve mold lifespan by reducing wear and tear caused by repeated use.

    • Enhance surface finish by minimizing surface defects and blemishes on the molded parts.

    • Increase productivity by reducing downtime associated with difficult demolding processes.

    • Prevent buildup of residue or contaminants on the mold surface, which can affect mold performance and product quality.

  4. Compatibility: Silicone mold release agents are compatible with a wide range of molding materials, including plastics, rubber, composites, and various types of resins. They are used in processes such as injection molding, compression molding, transfer molding, and casting.

  • OWT Fine Release 9368 (35-36% Water base)

  • OWT Fine Release 9628 (60-62% Water base)

Defoamer / Antifoam

Chemical additives used to control foam formation and eliminate foam in industrial processes and products. Foam, which consists of bubbles of gas trapped in a liquid or solid, can interfere with the efficiency and quality of processes in industries such as manufacturing, food processing, wastewater treatment, and pharmaceuticals. Here are some key aspects of silicone defoamers:

  1. Composition: Silicone defoamers typically contain silicone-based compounds as their active ingredients. These compounds may include polydimethylsiloxane (PDMS), silicone oils, silicone emulsions, or silicone polymers. The silicone compounds act to destabilize and break down foam bubbles, leading to their collapse and elimination.

  2. Mechanism of Action: Silicone defoamers work through several mechanisms to control foam:

    • Spreading: The silicone compounds in the defoamer spread over the surface of the foam, reducing surface tension and destabilizing the foam structure.

    • Breaking: The defoamer disrupts the foam bubbles by reducing their stability and promoting coalescence, causing them to collapse and release the trapped gas.

    • Wetting: The defoamer penetrates into the foam structure, displacing the liquid and allowing trapped gas to escape.

  3. Applications: Silicone defoamers are used in a wide range of industrial processes and products to control foam formation and improve process efficiency. Some common applications include:

    • Manufacturing processes such as paint and coating production, chemical processing, fermentation, and polymerization.

    • Food and beverage processing, including brewing, dairy processing, and soft drink production.

    • Water treatment plants, wastewater treatment, and industrial cleaning operations.

    • Pharmaceutical manufacturing, where foam control is critical for product quality and consistency.

  • OWT STRA S2610 

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