For businesses in the chemical and materials sector, identifying key ingredients that drive product innovation is critical. Hydroxyl Terminated Polydimethylsiloxane (PDMS), also known as OH Polymer or Silanol Terminated Silicone Oil (CAS No. 70131-67-8), is one such essential material. Characterized by its hydroxyl functional groups at the molecular ends, this silicone fluid offers a unique blend of reactivity and stability, making it a go-to choice for a wide array of demanding applications. As a leading manufacturer and supplier of specialized silicone products, we are dedicated to providing high-quality Hydroxyl Terminated PDMS to meet your formulation needs.

The Fundamental Advantage: Hydroxyl Functionality

The presence of terminal hydroxyl groups (-OH) on the PDMS chain is what sets this material apart. This functionality enables it to:

  • React and Crosslink: OH-terminated PDMS is a cornerstone for creating crosslinked silicone networks, particularly in condensation-curing systems like RTV silicone rubbers and sealants. These reactions form the durable, elastic structures characteristic of these products.
  • Act as a Reactive Intermediate: It serves as a building block for more complex silicone polymers, resins, and surface treatment agents, allowing for tailored material properties.
  • Modify Surfaces: The hydroxyl groups can interact with substrates to enhance adhesion, impart hydrophobicity, or provide lubricating and softening effects.

Diverse Applications Driven by Hydroxyl Terminated PDMS

As a versatile silicone fluid, Hydroxyl Terminated PDMS finds application across numerous industries. Our clients, who include product formulators and manufacturers, rely on us as a trusted supplier for:

  • RTV Silicone Sealants and Adhesives: This is perhaps the most significant application, where OH-terminated PDMS is the primary base polymer. It allows for ambient temperature curing and is used extensively in construction, automotive, and general assembly.
  • Textile Finishing: In the textile industry, it is employed as a softening agent, providing a luxurious feel, improved drape, and better sewability for fabrics. Manufacturers frequently inquire about bulk purchase options for textile auxiliaries.
  • Electronics Protection: Its excellent dielectric properties and thermal stability make it ideal for potting, encapsulating, and insulating electronic components, protecting them from moisture, heat, and vibration.
  • Release Agents: In some molding applications, it can function as a release agent due to its low surface tension and non-stick properties.
  • Modification of Other Polymers: It can be used to graft onto or react with organic polymers to impart silicone characteristics like flexibility and weather resistance.

Selecting Your Ideal OH Polymer from a Leading Manufacturer

When you are ready to buy Hydroxyl Terminated PDMS, partnering with an experienced manufacturer and supplier is crucial. We offer:

  • Customization: We can tailor viscosity and OH content to precisely match your formulation requirements.
  • Consistent Quality: Our commitment to high purity and rigorous quality control ensures reliable performance batch after batch.
  • Competitive Pricing: Sourcing directly from our manufacturing facility in China provides cost advantages for bulk orders.
  • Technical Expertise: Our team is available to provide guidance and support for your application development.

We invite you to explore the potential of Hydroxyl Terminated PDMS for your next project. Contact us today to learn more about our product offerings and to request a quote. As your dedicated supplier, we are committed to providing the advanced silicone materials you need to succeed.