UHMW-PE
"Body Armor" among Plastics
UPE is an engineering plastic with a molecular weight over 3 million, renowned for its exceptional impact and wear
resistance, self-lubrication, and cryogenic stability.
Available grades: 3M, 5M, and 9.2M molecular weight.
Wear & Impact
Resistant
Super
Self-Lubricating
Cryogenic
Toughness
Core Material Advantages
Wear Resistance
Surpasses carbon steel by 7-10 times. Ideal for high-friction industrial components and conveyor liners.
Impact Strength
Virtually unbreakable. Absorbs kinetic energy effectively, used in bulletproof vests and armor plating.
Self-Lubrication
Low coefficient of friction (0.07-0.11), comparable to PTFE but with significantly higher mechanical strength.
Cryogenic Stability
Maintains high impact resistance even at liquid helium temperatures (-269°C) for aerospace applications.
UHMWPE Properties and Key Characteristics
| Performance Metrics (UHMWPE) | Extreme Performance |
|---|---|
| Molecular Weight | 3–6 Million (vs 0.05–0.3M for HDPE) |
| Density | 0.93–0.94 g/cm³ (Lightest engineering plastic) |
| Wear Resistance | 5–10x better than POM/PA (Slurry test) |
| Impact Strength | No breakage at -269°C (Liquid nitrogen) |
| Friction Coefficient | 0.05–0.10 (Self-lubricating, near PTFE) |
| Pros | Cons |
|---|---|
| Extreme Wear Resistance (5–10x Life of Standard Plastics) | Poor Heat Resistance (Softens >80°C) |
| Superior Impact Strength (Bulletproof) | Non-Injectable (Compression/Extrusion/Machining only) |
| Self-Lubricating (Oil-free) | Low Surface Energy (Difficult Bonding) |
| Ultra-wide Temp Range (-269°C to 90°C) | High Creep (Deformation under long-term load) |
| Waterproof & Chemical Resistant | High Cost (5–10x price of Standard HDPE) |
| Biocompatible & Food Grade | UV Aging (Requires UV stabilizers) |
| Selection Scenario | Core Value |
|---|---|
| Extreme Wear Resistance | 10x Lifespan of Standard Plastics |
| Ballistic Impact Resistance | Bulletproof |
| Artificial Joints | 30 Years of No Wear |
| Self-Lubricating | Maintenance-Free |
| Cryogenic Temperatures | Remains Flexible at -269°C |
|
Modified Products: Improved sliding properties, ultra-high wear resistance, high temperature resistance, flame retardancy, anti-static, UV resistance, etc. Summary: "When standard plastics surrender, UHMWPE is just getting started!" |
|
| Material | Wear Resistance | Impact (Izod, J/m) | Friction Coeff. | Water Absorption |
|---|---|---|---|---|
| UHMWPE | 10 | No Break | 0.05–0.10 | <0.01% |
| HDPE | 3 | 100–200 | 0.2–0.3 | <0.01% |
| POM | 5 | 80 | 0.2–0.3 | 0.2% |
| PA66 | 4 | 60 | 0.3–0.4 | 2.5% |
| PTFE | 2 | 160 | 0.04–0.08 | <0.01% |
Industry Applications
Dyneema Vests & Helmets
15x stronger than steel by weight. Providing ultimate protection with
minimal burden for modern infantry.
Hopper & Chute Liners
Extends industrial component life by 8x. Eliminates material “bridging” with zero-friction surfaces.
Mooring Ropes
Strength of steel at 1/7 the weight. Floats on water and resists UV/Salt degradation.
High-Speed Bases
The material behind Olympic-grade ski bases and ultra-light climbing gear.
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