Knowde Enhanced TDS
Identification & Functionality
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- Material compatibility
In many high performance products, engineering plastics, composites and metals like aluminum are increasingly being used as replacements for traditional materials like steel because they provide favorable properties including light weight, flexibility and chemical resistance. Semi-crystalline materials have excellent solvent and heat resistance and whilst these features are often advantageous it also means that these materials are extremely difficult to bond to. The problem is further compounded with manufacturers opting for greener solutions and moving to non-solvent based adhesives. If the compatibility between the adhesive and the substrate is poor, some kind of surface preparation is usually required to provide adequate bond strength in bonded assemblies. Surface preparation methods can range from hand sanding of CFRP (carbon fiber reinforced plastic) through to etching of aluminum and plasma treatment of semi-crystalline thermoplastics. All these various treatments bring different challenges into the production line such as significant investment in manual labor, high levels of capital investment and slow processes that create bottlenecks. Onto™ SB1050 is a simple and effective wet chemistry that requires no specialist proces
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Adhesive & Sealant Type
- Processing and treatment
All Onto™ materials are precursors to highly reactive carbenes. In the unactivated form they are stable to heat and light, and therefore Onto™ SB1050 can be shipped and stored in this stable form. Once activated, the treatment is applied using a brush. SB1050 is an alcohol/water-based formulation, but the active part is compatible with a variety of solvents, so modified formulations can be designed for integration into a particular manufacturing process if required. A curing stage is required to generate the highly reactive carbene species, which then reacts and forms a bond to the substrate surface. This functional layer is now permanently bound to the surface, and the next stage of the process can be completed offline. This is in stark contrast to corona or plasma treatment and even some wet primer treatments, where longevity can be an issue and it is often necessary to bond the substrate within minutes or hours of treatment.
- Applications
Adhesives
- Cationic epoxy
- Anionic epoxy
- Two part PU
- Solvent-based TPU
Substrates
- PP
- UHMWPE
- PET
- PEN
- PEEK
- PI
- PEI
- Aluminum
Technical Details & Test Data
- Technical Details
Plaque material Adhesive Lap Shear/MPa No surface treatment Lap Shear/MPa Treated with SB1050 Substrate thickness/mm ABS A-stage epoxy 0.6 (A) 2.7 (S) 3 Nylon 6,6 A-stage epoxy 2.2 (A) 6.1 (S) 6 HDPE 2K PU 1.0 (A) 2.7 (S) 1.6 HDPE A-stage epoxy 0.5 (A) 2.7 (S) 1.6 CFRP B-stage epoxy 7.9* (A) 11.4 (S) 0.8