LCP (Liquid Crystal Polymer)

LCPs are cool, relatively new materials with interesting properties. They have tensile strength and modulus close to aluminum. Because of the highly oriented, rod like nature, of the polymer molecules, LCPs present some interesting design challenges. This is because the molecules will only form in straight lines. Additionally, the high orientation only occurs within about .040 of the surface of the part. Molecular orientation below this skin is random. As a result all of the strength of the material is in the skin. Good design data is not available for these materials, so prototyping is a must. prototypes must be molded, because of the molecular orientation mentioned above.

Applications: Electrical and Mechanical parts, Food containers, and any other applications requiring chemical inertness and high strength.

Advantage

 

Strong resistance to chemical attack
Excellent thermal and dimensional stability
Absorb little moisture
Flame retardant

Disadvantage

 

Causes weakness at weld lines
Generally incompatible with other polymers
Higher cost

Tensile StrengthFlexural ModulusImpact StrengthMax Temp.Chemical Resistance
12,000-32,000 psi1,300,000-4,600,000 psi1.1-11 ft-lb/in notched izod430°-500° FGood to Great