Adhesives
One- and Two-Component MDI-Based Polyurethane Adhesive Systems
PTU supplies and develops MDI-based polyurethane (PU) adhesive systems for manufacturers requiring reliable bonding performance across a range of substrates and applications.
PTU adhesive systems can be supplied as one-component, moisture-curing MDI-based prepolymers or as two-component polyurethane formulations, depending on the required processing method, cure profile and performance requirements.
These systems can be formulated for bonding suitable metals, plastics, wood, composites and other substrates, with applications including structural bonding, panel lamination, composite assemblies and selected footwear and furniture applications.
PTU works with customers to develop adhesive formulations around the specific substrate combination, application method, production process and required bond performance.
Product Features
Strong and Durable Bonds
Formulations can be developed to provide the required combination of mechanical strength, durability and resistance to environmental conditions for specific bonding applications.
Tailored Cure and Processing Profiles
PTU can adjust formulation reactivity and cure characteristics to suit different production processes, allowing manufacturers to balance open time, assembly time and cure speed.
Substrate Versatility
PU adhesive systems can be formulated for bonding a wide range of substrates, including wood, metals, plastics and composite materials. Adhesion performance depends on the specific substrate, surface condition, formulation and processing conditions, and primers or surface treatments may be required for some materials.
Resistance to Heat and Moisture
Selected formulations can be developed to provide resistance to moisture, temperature variation and other environmental conditions encountered in the intended application.
Tailored Viscosity and Rheology
PTU can formulate adhesives across a range of viscosities and rheological profiles. Thixotropic formulations can be developed for applications requiring controlled application to vertical or inclined surfaces with reduced sagging.
Foaming Adhesive Systems
PTU can formulate moisture-reactive foaming PU adhesives that expand during curing to help fill gaps and accommodate uneven surfaces. These systems can be used in suitable wood and furniture applications where gap filling and effective substrate contact are required.
Application-Specific Formulation
PTU works with customers to optimise adhesive systems for the required combination of substrate compatibility, viscosity, open time, cure speed, bond strength and production process.