Polyamide-Based Holt Melt Adhesives
Polyamide-based hot melt adhesives offer excellent resistance to heat, oil, grease, plasticizers, and solvents. They are also very strong and flexible. These qualities make them a good choice for difficult to bond, low energy substrates. Polyamide-based hot melt adhesives are generally used in electronics, filtration, automotive, and aerospace applications due to their high heat and chemical resistance properties.
TECHNOMELT® PA hot melt adhesives offer beneficial characteristic properties necessary to excel in demanding performance environments. They have higher thermal stability and good chemical resistance to common solvents, plasticizers, and oils. TECHNOMELT® PA adhesives have higher creep resistance under load and better heat resistance with thermally stability up to 160°C.
TECHNOMELT® PA provides protection for modern electronic components, printed circuit boards (PCBs), and lighting applications. The product family delivers electrical insulation, as well as temperature, vibration and solvent resistance for many applications. These products protect electronics from the harshest environmental conditions, including high humidity, long-term UV exposure and extreme thermal cycling. TECHNOMELT® PA also supports low pressure molding, which is a faster and more efficient process than conventional potting. The products range includes one-part material – no mixing or curing – and reduces material consumption through streamlined, multi-level, contour-exact encapsulation. This is a sustainable option with its green chemistry and reusable formulation.
Polyamide-based hot melt adhesives have high cohesive strength with strong inter-chain hydrogen bonds, which is the reason for their relative high strength and chemical resistance properties. TECHNOMELT® PA formulations offer a flexible open time from a few seconds up to about a minute and provide excellent adhesion to a wide variety of substrates including metal, paper, wood, and many plastics such as PVC and surface-treated polypropylene and polyethylene. Polyamide hot melt adhesives are also used for bonding textile fabrics because they have good resistance to dry cleaning fluids. Other important applications include furniture assembly, shoe making, automotive assembly, and gas/oil filter bonding.