Liquid, optically clear adhesives (LOCA) provide superior optical enhancement and anti-glare properties in the manufacture of liquid crystal displays. The design of LOCA adhesives must take into account long-term exposure to environmental conditions such as light, temperature, humidity, and mechanical shock. Resin Designs chemists have devised a family of products for both screen face adhesion and edge sealing that have been fully tested to assure clarity and adhesion are maintained over time.
image: Plastic transitioning from solid to amorphous
One of the most common terms that you hear when discussing polymers used as adhesives and coatings is the “glass transition temperature” (often abbreviated Tg). This property is in fact one of the most critical to consider when choosing the correct material for your application. Since many of us never got further than high school physics and chemistry, this term can be a little confusing and deserves explanation.
A layman’s definition of the glass transition temperature of a polymer is the temperature at which an amorphous polymer moves from a hard or glassy state to a softer, often rubbery or viscous state.
Axis 310 and Axis 310-W are the most recent additions to Resin Designs’ growing line of medically tested and qualified adhesives. Both products are single component epoxies for simplicity in application. Their heat curing chemistry provides added temperature and chemical resistance properties. These adhesives bond to a wide range of substrates typically found in the design of high-performance medical devices.
Resin Designs UV 165-183 is uniquely designed for thick applications as both an adhesive and encapsulant where UL V0 fire ratings are critical. The products properties include:
B-stage epoxy films for clean reliable bonding/thermal and electrical conductivity
Most of us are familiar with epoxy adhesives and coatings, especially those of us within the electronics and medical device industries. We have all seen and often used two-component liquid epoxies. They are provided in syringes or pails for dispensing as adhesives, sealants, gaskets, and coatings. There is, however, a lesser known relative that can be cleaner, more consistent, environmentally friendly, and capable of unique properties such as thermal and electrical conductivity. It is known as B-stage epoxy film.