LCP (liquid crystal polymers) refers to polymers which show a certain degree of order in the melt. Because of these liquid-crystalline properties, LCP has a high melting point, good melt flow, good flame resistance (V0 according to UL 94), high dimensional stability (even at high temperatures), good chemical resistance, low thermal expansion and good mechanical properties. In addition, LCP has good weathering stability and very good barrier properties against gases and water vapor.
LCP is resistant to hydrolysis, weak acids and bases, alcohols, aromatics, chlorinated hydrocarbons, esters, ketones and all chemicals that usually cause stress cracks in many plastics. Strong oxidizing acids and strong alkalis do attack LCP.
Glass and carbon fiber reinforced grades have increased strength and rigidity.
Examples of how LCP is used include:
Connectors, electromechanical components, glow plug connectors, chip card readers, sunlight sensors, couplings for optical fibers, bearings, seals and functional elements for pumps and measuring instruments.
Operating temperature: -200 bis +240 °C
Melting temperature: +280 bis +330 °C