Maximize Impact Resistance
Although polycarbonate has excellent impact resistance in ambient
conditions, at very low temperatures it can become brittle, leading to
cracking, crazing and breakage. Impact modifiers increase the flexibility and
impact strength of PC to meet physical property requirements of rigid parts
subjected to temperature extremes. However, some impact modifiers-including
small silicone elastomer powders-are opaque and can affect the clarity of PC.
They can also reduce the flowability of the resin during processing.
Dow Corning's new siloxane fluid additive technology solves these
problems. It leverages the ability of silicone to remain flexible at very low
temperatures-down to -20°C. When dispersed within PC resin during
polymerization, our reactive silicone fluid absorbs or dissipates the energy of
impact to relieve stress that can cause cracking, crazing and breakage.
Unlike competitive materials, Dow Corning's siloxane fluid maintains
the clarity of the PC resin.
Solving Your Processing
Dow Corning's innovative silicone-based technology increases the impact
resistance of PC used for outdoor applications , such as solar panel boxes, and
for the housings of consumer electronic
devices such as smartphones and tablets. In addition, our technology:
Preserves the clarity of PC
Improves flow properties
for better processing
Enhances chemical resistance
Product highlights include:
Dow Corning TORAY BY
16-752A (PDF): A reactive phenol
modified polydimethyl siloxane fluid.
Find out how Dow Corning can help you enhance the impact performance of
PC with silicone property enhancement additives. It's
as easy as contacting your Dow Corning