LCP (Liquid Crystal Polymer) vs Silicone Rubber (VMQ/HTV): 0% composition overlap. Significantly different materials serving different application areas.
LCP (Liquid Crystal Polymer) vs Silicone Rubber (VMQ/HTV)
Side-by-side chemical composition and mechanical property comparison.
Overview
LCP (Liquid Crystal Polymer)
Liquid Crystal Polymer — self-reinforcing aromatic polyester with outstanding flow into thin walls (<0.2mm). Extremely low moisture absorption (0.02%), minimal warpage, excellent dimensional stability. Near-zero creep. Inherently flame-retardant (V-0 at 0.2mm). Very high HDT (>270°C). Trade names: Vectra (Celanese), Zenite (DuPont), Siveras (Toray). THE micro-connector and SMT-reflow-compatible polymer. Used for SMD connectors, fiber optic ferrules, chip carriers, sensors, and ultra-thin-wall electronic housings.
Silicone Rubber (VMQ/HTV)
Silicone rubber (VMQ = Vinyl Methyl Polysiloxane) — THE extreme-temperature elastomer. Usable from -60°C to +230°C continuous (short-term +300°C). Excellent UV/ozone/weathering resistance. Biocompatible (FDA, USP Class VI). Low compression set. Electrically insulating. Lower tensile/tear strength than organic rubbers. Used for seals/gaskets, medical tubing/implants, food-grade components, baby products, automotive ignition boots, and LED/lighting encapsulation.
| LCP (Liquid Crystal Polymer) | Silicone Rubber (VMQ/HTV) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 37 |
Mechanical properties
| Property | LCP (Liquid Crystal Polymer) | Silicone Rubber (VMQ/HTV) | Unit |
|---|---|---|---|
| tensile_strength | 130–190 | 6–12 | MPa |
| elongation | 2–4 | 200–600 | % |
| e_modulus | 9000–17000 | — | MPa |
Compatibility Assessment
LCP (Liquid Crystal Polymer) and Silicone Rubber (VMQ/HTV) have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is LCP (Liquid Crystal Polymer) the same as Silicone Rubber (VMQ/HTV)?
LCP (Liquid Crystal Polymer) and Silicone Rubber (VMQ/HTV) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace LCP (Liquid Crystal Polymer) with Silicone Rubber (VMQ/HTV)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between LCP (Liquid Crystal Polymer) and Silicone Rubber (VMQ/HTV)?
The main differences are in the following elements: overall alloying content. LCP (Liquid Crystal Polymer) is a Polymers grade, while Silicone Rubber (VMQ/HTV) is a Polymers grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.