- Adhesive based on expoxy resin
- Lower temperature minimizes thermal stress & reduces warpage
- Good adhesion to plastics, incl. LCP, PA and PPS
Heat-curing adhesives are used in many applications that require high strength and permanent resistance to environmental influences. In order to achieve these properties, the adhesive is cured at temperatures between 100 °C and 150 °C in most cases. The company Delo Industrial Adhesives has developed a special adhesive for temperature-sensitive parts that gives full strength even at a curing temperature as low as 60°C.
An application area where many temperature-sensitive materials are used is optical packaging. In this industry, components are bonded to mini-cameras, actuators and infrared, image or motion sensors for consumer electronics. The micro-optics of these assemblies are often covered by anti-reflection or filter coatings. Unlike most plastic lenses, these coatings are very sensitive and get damaged at elevated temperatures. The new Delomonopox LT204 epoxy resin now makes it possible to bond these materials without any problems.
This multi-purpose, one component adhesive can be processed within 48 hours at room temperature and has very good adhesion to many plastics, including LCP, PA and PPS, as well as to metals and FR4 composites. It can be dispensed through needles with a diameter as small as 200 µm, which are common in consumer electronics and enable finest structures. Curing is possible from 60 °C, minimizing the thermal stress and resulting in reduced warpage of the components bonded and fewer tensions within the package.
