Adhesion Promoters for Plastic

Yes, when properly applied, adhesion promoters significantly increase bond strength on difficult plastics. Poly Prep etches the polymer surface to create the correct texture and chemistry for adhesive bonding. This surface preparation step is critical—without it, cyanoacrylates and bonding agents will not achieve a reliable, permanent hold on low surface energy substrates like PTFE or HDPE.

Low surface energy plastics are the most challenging to bond and require adhesion promoters. These include HDPE, PTFE (Teflon), polypropylene, nylon, Delrin (POM), and silicone rubber. These materials have smooth, chemically inert surfaces that prevent standard adhesives from forming strong mechanical or chemical bonds without prior surface etching.

Apply Poly Prep to the cleaned polymer surface and allow it to dry fully—it is fast-acting and dries quickly due to its solvent-based formula. Once dry, proceed immediately to the bonding step using a compatible cyanoacrylate or Tech-Bond bonding agent. Available in sizes from 0.75 oz to 5 gallons for both small repairs and large-scale industrial use.

Yes. Poly Prep is designed for industrial-scale use, available in 1-gallon and 5-gallon sizes with volume pricing. It is used in automotive, manufacturing, pipeline, and construction industries for repairing and assembling components made from HDPE, PTFE, nylon, and other difficult polymer substrates that conventional adhesives cannot bond reliably.

The Professional and Deluxe Kits include Poly Prep adhesion promoter, a SI Bonding Agent (choice of SI Blue, SI Black, or SI Green viscosity), an Activator/Accelerator, Filler for gap reinforcement, and a Debonder for clean removal. These all-in-one kits are designed for technicians requiring a complete surface preparation and bonding solution in one package.

Poly Prep should be stored in a cool, dry place in accordance with solvent-based product safety guidelines. For complete kits including bonding agents, Tech-Bond recommends refrigerator storage to maximize shelf life. Always bring products to room temperature before use to ensure proper application performance and chemical effectiveness.