PPF
Innegra™ Hybridized Yarn Family
Quantum Materials (Innegra) ? HMPP-HYBRID
Manufacturer page / TDSDescription
Current Innegra hybridized-yarn family. Properties are construction-dependent and therefore no single strength, modulus or density is assigned. Official source: https://innegra5280.com/products/
Comparative overview
High-performance polypropylene fiber — Hybrid polypropylene yarn
Strengths: Very low density, high elongation, impact tolerance, damping and excellent dielectric transparency at low-to-moderate material cost.
When to use: Select for impact skins, luggage, helmets, automotive underbody, marine/sporting hybrids and radome/antenna structures needing toughness without conductivity.
Key tradeoffs: Low stiffness and poor heat/fire capability; creep and bonding must be managed. Usually hybridized with a stiffer fiber for structural loads.
Qualitative ratings (1–10 scale)
| Relative cost | 5/10 — Moderate — specialty high-modulus polypropylene above commodity PP but below aramid/UHMWPE/PBO. |
|---|---|
| EM transparency | 10/10 — Exceptional — polypropylene is an excellent dielectric and RF transparent. |
| Temperature / fire resistance | 1/10 — Very low — low melting temperature makes it unsuitable for hot/fire-critical structures. |
| Impact / penetration resistance | 8/10 — Very high — very low density and about 9.5–10% elongation support strong low-velocity energy dissipation; ballistic role is mainly as a hybrid. |
| Electrical / thermal conductivity | 1/10 — Very low — electrically insulating with low thermal conductivity. |
| Specific tensile strength | 3/10 — 3/10 | 794.0 kN·m/kg | Class median |
| Atmospheric durability | 5/10 — Moderate — very low moisture uptake, but polypropylene is vulnerable to UV and thermo-oxidative ageing unless well stabilized. |
| Sustainability (CO₂e) | 8/10 — 2.20 kg CO₂e/kg fiber — Low emissions — data quality: Low |
Technical properties
Applications and processing
damage tolerancedampingHybrid laminates requiring impact resistancelow density or dielectric transparencyCo-mingled yarns; co-woven reinforcements; spread tow; UD; braids; multiaxials; prepregs