Dow launches DOWSIL™ VE-8001, a flexible silicone adhesive for flexible and foldable displays of smartphones, wearables, laptops, televisions and many other types of electronic devices. The two-part primerless silicone adhesive is applied directly to thin metal surfaces which forms an elastic layer, or inner hinge, that helps to protect the display from damage caused by folding and unfolding.
Low-temperature Curing with Reduced Energy Costs
DOWSIL™ VE-8001 Flexible Silicone Adhesive is easy to apply and features low-temperature curing for reduced energy costs and provides durable mechanical properties. The tensile strength and elongation of the adhesive support designs with a small folding radius.
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Manufacturers of flexible and foldable devices need an elastic adhesive that is easy to process, cures at low temperatures and can withstand repeated folding and unfolding,” said Jayden Cho, global marketing segment leader for Consumer Electronics at Dow.
Primerless Adhesion with Right Modulus for Foldable Display
The new Dow adhesive speeds production with primerless adhesion and offers the right modulus for the elastic layer within a foldable display. The new adhesive supports the reliability of consumer devices by withstanding the demands of greater use.
DOWSIL™ VE-8001 Flexible Silicone Adhesive can be applied with screen printing, roll-to-roll coating, automatic dispensing or injection molding. The adhesive’s viscosity makes it easy to apply to substrates such as the etched areas of thin stainless-steel sheets used as frames underneath the display of foldable laptops.
The adhesive supports low-temperature curing (80°C for 1 hour at 300 µm thickness) and higher heat can be applied for accelerated curing. The adhesive has a working time of 12 hours at room temperature and does not harden prematurely.
Stable Mechanical Properties with High Elongation
DOWSIL™ VE-8001 Flexible Silicone Adhesive exhibits stable mechanical properties after both dynamic and static testing. Hardness, adhesive strength and tensile strength remain consistent over time. The elongation is high (40 percent) and indicates the material’s ability to stretch significantly before breaking.
The adhesive’s tensile strength and elongation help in controlling the stress neutral line, preventing damage to the display, especially in the folded area. The adhesive provides shock resistance to help protect the display panel from drops and other impacts.
Source: Dow