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LCP
Material Type
Engineering Plastics
Material Full Name
Liquid Crystal Polymer
Process Compatibility
Injection Molding, CNC Machining
Basic Properties
Property |
Description |
|---|---|
| Chemical Name | Liquid Crystal Polymer |
| Density | 1.35–1.45 g/cm³ |
| Melting Point | 280–350°C (varies by grade) |
| Heat Deflection Temp (HDT) | 180–300°C (at 1.82 MPa) |
| Tensile Strength | 150–230 MPa |
| Flexural Modulus | 10–20 GPa |
| Dielectric Constant | 2.9–3.2 (at 1 MHz) |
| Flame Resistance | UL94 V-0 (without additives) |
| Chemical Resistance | Resists acids, bases, and solvents, but weak against strong oxidizers |
Processing Characteristics
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High processing temps: Typically 300–400°C (grade-dependent).
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Low viscosity: Ideal for thin-wall and complex structures (e.g., connectors).
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Low hygroscopicity: Usually no pre-drying needed (short drying recommended for humid conditions).
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High anisotropy: Molecular orientation causes directional property differences.
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Fast solidification: Rapid cooling shortens cycle time.
Common Application Areas
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Electronics: 5G antennas, high-frequency connectors, IC packaging.
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Automotive: Sensor housings, ignition system parts.
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Medical: Surgical tools, sterilizable trays.
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Industrial: Precision gears, pump valves.
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Consumer Electronics: SIM card slots, camera module brackets.
LCP Modified Types
Type |
Modification Method |
Key Improvements |
Typical Applications |
|---|---|---|---|
| Glass-Fiber Reinforced LCP | 10–40% glass fiber addition | Higher strength, rigidity, dimensional stability | Structural parts, IC packaging |
| Carbon-Fiber Reinforced LCP | 5–30% carbon fiber | Enhanced conductivity, EMI shielding | Aerospace components |
| Mineral-Filled LCP | Talc/mica fillers | Cost reduction, reduced anisotropy | Consumer electronics housings |
| High-Flow LCP | Optimized molecular structure | Superior flow for thin-wall molding | Micro connectors |
| Hydrolysis-Resistant LCP | Hydrolytic stabilizers | Improved stability in humid environments | Medical devices |
| UV-Stabilized LCP | UV absorbers | Reduced weathering effects | Outdoor electronics |
Advantages & Disadvantages
Advantages |
Disadvantages |
|---|---|
| Extreme heat/ dimensional stability | High cost (3–5× conventional plastics) |
| Exceptional strength/rigidity | Strong anisotropy (direction-dependent properties) |
| Negligible moisture absorption | Demands high-temperature equipment |
| Inherent flame resistance (UL94 V-0) | Sensitive to strong oxidizers |
| Superior electrical insulation | Poor weldability (requires laser/ultrasonic welding) |
Other Engineering Plastics Selection
POM Materials
PA Materials
PC Materials
PET Materials
PEEK Materials
FAQ Of LCP Materials
Visit our FAQ center for more questions.
What are the most outstanding high-performance properties of LCP?
LCP exhibits exceptional thermal stability (continuous use at 240-280℃), ultra-low CTE (close to metals) and superior high-frequency dielectric properties (critical for 5G applications).
In which high-tech fields is LCP primarily used?
Widely applied in 5G antenna modules (LDS process), IC packaging substrates, aerospace precision components and micro-medical instruments requiring advanced material technology.
What special processing parameters are required for LCP injection molding?
Requires hot molds (120-180℃), high injection speed (fill time <0.5s) and precise temperature control (melt temp 320-400℃), with special attention to molecular orientation effects.