Pressure-sensitive adhesives (PSAs) are unique in that they never fully solidify. As a result, they are permanently tacky, making them extremely useful in tape and label applications. The PSAs that most people are familiar with are those used on common tapes, food labels, and sticky notes. These PSAs are usually made from rubber and acrylic polymers and are typically cost-effective. However, a more robust PSA option is needed for applications that require high performance and durability in challenging environments and conditions.
SPUR+™ PSA 3.0: A Remarkably Durable Adhesive
Momentive’s SPUR+™ PSA 3.0 is a high-performance adhesive that provides excellent adhesion performance even upon exposure to fuel, solvents, water, and elevated temperatures. Its primary application is on tapes or transfer films, but it may also be used as a contact adhesive applied with a roller or brush.
SPUR+™ PSA 3.0 performs far superior to traditional rubber and acrylic pressure-sensitive adhesives. SPUR+™ PSA 3.0 can be applied using traditional PSA coating equipment and cured to thermally sensitive films to provide a highly tacky, chemically resistant, and weather-stable adhesive layer that bonds well to low-energy surfaces. SPUR+™ PSA 3.0 is the ideal pressure-sensitive adhesive for tapes and labels used in aerospace, automotive, medical, floor marking, and chemical labeling applications due to its outstanding resistance to solvents, moisture, and temperature. The features and benefits offered by SPUR+™ PSA 3.0 are listed below:
Useful over a wide temperature range up to 356°F
Resistant to gasoline, jet fuel, diesel, brake fluid, hydraulic fluid, xylene, acids, bases, and various other solvents
Good adhesion to polyolefins and other low-energy surfaces
Curable on thermally sensitive films
Resistant to UV and oxidation from weathering
Perfect balance of peel and tack
Compatible with fillers for cost reduction
Where is SPUR+ PSA 3.0 Used?
Automotive
The resistance of SPUR+™ PSA 3.0 to gasoline, diesel, and oil makes it an ideal contact adhesive for bonding, mounting, and masking in automotive assembly and repair applications.
Aerospace
SPUR+™ PSA 3.0 is resistant to jet fuel, hydraulic fluid, and other harsh chemicals used in airplanes. The chemical resistance and temperature stability make it an excellent adhesive for tapes and sealants used in aerospace applications.
Floor Marking
Tapes used to mark floors need to be resistant to the chemicals used to clean the floor. SPUR+™ PSA 3.0 is highly resistant to acids, bases, and other chemicals used in industrial cleaners and detergents.
SPUR+™ PSA 3.0 is the ideal pressure-sensitive adhesive for applications that require best-in-class solvent and chemical resistance. To highlight performance in harsh conditions, Momentive performed a comparative study with SPUR+™ PSA 3.0, a solvent acrylic adhesive, and a silicone adhesive. The chemical resistance of the three adhesives is summarized below.
Chemical / Solvent
SPUR+ PSA 3.0
Solvent Acrylic
Silicone
Acids
Alcohols
Aromatic Solvents
Brake Fluid
Caustic / Bases
Diesel Fuel
DMF
DMSO
N/A
DOP
Gasoline
Histology Stains
N/A
Hydraulic Fluid
Motor Oil
Power Steering Fluid
Water
The complete results of the comparison study can be viewed by clicking the link below.
SPUR+™ PSA 3.0 is packaged at a viscosity suitable for use with standard tape coating equipment. If the viscosity or solids content needs to be adjusted, the adhesive can be easily diluted with ethyl acetate, butyl acetate, MEK, MIBK, or other common solvents. SPUR+™ PSA 3.0 can be applied to the substrate with conventional tape coating techniques or by use of a brush or roller. Once applied, the solvent must be removed as part of the adhesive curing process. Curing can be done at ambient temperature, or if a more rapid cure is required, heat can be applied up to 150°C. Once cured, the adhesive can be bonded to the intended surface, or a release liner can be applied to protect the adhesive layer for future use.
Conclusion
Traditional solvent-based acrylic and silicone pressure-sensitive adhesives lack the durability required for industrial tape and label applications that encounter a high degree of exposure to harsh chemicals and solvents. SPUR+™ PSA 3.0 offers best-in-class resistance to chemicals and solvents and is characterized by an optimum balance of peel and tack, even on low-energy substrates. This makes it ideal for applications that require an adhesive to perform at a high level and withstand harsh chemicals. Click below to request a sample today.
