Polymer Industrial Products

SI Blue is a standard thin-to-medium viscosity agent suitable for general-purpose bonding. SI Black features a thicker viscosity providing greater control for precision or overhead applications. SI Green is ultra-thin and specifically designed to penetrate and repair hairline cracks. Selecting the right viscosity ensures optimal bond strength and application performance.

Yes — for hard-to-bond polymers such as PTFE, HDPE, nylon, and polypropylene, Poly Prep is an essential surface preparation step. This solvent-based adhesion promoter etches the polymer surface to create the right texture, dramatically increasing bond strength. Skipping this step can result in significantly weaker or failed bonds on low-surface-energy substrates.

The Activator/Accelerator acts as a catalyst that initiates and accelerates the polymer bonding reaction. It works in conjunction with the bonding agent to speed up cure times and enhance the strength of the molecular cross-link. It is particularly important in time-sensitive field repair applications where fast, reliable adhesion is critical.

No — Tech-Bond's Filler, which is a silica sand compound, is not recommended for polymers or plastics. It is designed for gap filling and crack repair in metal, wood, composites, and pot metal. When mixed with the bonding agent, it forms a rock-hard mass that can be drilled, tapped, sanded, and painted after curing.

Tech-Bond's Debonder is a precision-grade solvent designed to dissolve and remove cured bonding agents cleanly from surfaces, parts, tools, and skin. For bonded joints requiring full separation, immersing the joint in acetone may be necessary and can take a day or more. Always use in a well-ventilated area and test on sensitive finishes beforehand.

Tech-Bond bonding agents and kits have an extended shelf life when stored in a refrigerator. Before use, products should be brought back to room temperature to ensure optimal viscosity and performance. Poly Prep and solvent-based products should be stored in a cool, dry place. Proper storage is critical to maintaining adhesive effectiveness over time.