221
10.4.3 Electronics
Keypads, keyboards and copier rollers are made from sturdy and durable silicones,
as are many components of computers, mobile electronics and home entertainment
equipment. Silicones also play an essential role in enabling LED lighting technology (Fig. 10.14). Silicones with high thermal stability and excellent dielectric properties allow their use in a variety of electrical transmission applications.
10.4.4 Aviation
Because silicones can withstand extreme stresses and temperatures, silicone adhesives and sealants are used to seal and protect black boxes, doors, electric landing
gear devices, electrical cables, engine gaskets, fuel tanks, hydraulic switches, upper
compartments, ventilation ducts, windows, wing edges and wings (Rey et al. 2013;
Dias et al. 2014).
10.4.5 Thickening and Thixotropy
Pyrogenic silica is particularly important for controlling the flow and propagation of
paints and coatings, adhesives and sealants, unsaturated polyester resins, cosmetics
and pharmaceuticals (Brunner and Wakili 2014).
Secondary optics
(diffuser)
LED chip
encapsulants
Adhesives for
environmental
seals
Thermal pottants
for heat control
Thermally conducive
encapsulants for
power components
Conformal coating
Thermal
interface materials
Conformal coating/
white reflecion
Reflector materials
Optics
(remote phosphor)
Fig. 10.14 Moldable
optical silicones allow
LED lamps
10 Reactive Silicones as Multifacetic Materials