UHMWPE Hanwha Chemical U030
UHMWPE Hanwha Chemical U030 Resin
Material Introduction: UHMWPE Hanwha Chemical U030 is an ultra‑high‑molecular‑weight polyethylene material. It is well‑known for extremely high wear resistance, outstanding impact resistance, low friction coefficient and self‑lubricating property. Nevertheless, its processing methods differ from ordinary polyethylene.
Main Applications
Wear‑resistant components: wear‑resistant plates, silo linings, chute liners, guide rails, etc. Its wear resistance is approximately 7 times that of carbon steel.
Bearings and self‑lubricating parts: bearings, gears, cams, shaft sleeves, sliding blocks and so on. Its self‑lubricating characteristic can reduce or eliminate the use of lubricants.
High‑performance fibers and films: bulletproof vests, helmets, ropes, sails, etc. Higher‑molecular‑weight grades such as U090 and specific gel‑spinning process are generally required for these applications.
Other fields: electrical & electronic components (flame‑retardant grades available), sports equipment (snowboards, safety helmets), medical products (artificial joints), and corrosion‑resistant parts for chemical industry.
Performance Parameters
| Performance Category | Test Item | Test Standard | Data / Range | Unit |
|---|---|---|---|---|
| Basic Properties | Grade | ‑ | U030 | ‑ |
| Type | ‑ | UHMWPE | ‑ | |
| Average Molecular Weight | Internal Method | Approx. 3.0 × 10⁶ | g/mol | |
| Density | ASTM D1505 | 0.930 | g/cm³ | |
| Bulk Density | ISO 60 | 0.45 | g/cm³ | |
| Average Particle Size | Internal Method | 120 | µm | |
| Mechanical Properties | Tensile Yield Strength | ASTM D638 | ＞16.7 | MPa |
| Elongation at Break | ASTM D638 | ＞300 | % | |
| Rockwell Hardness | ASTM D785 | 63 | ‑ | |
| Abrasion Loss | ISO 15527 | 120 | ‑ | |
| Cantilever Beam Notched Impact Strength (23°C) | ASTM D256 | No break | ‑ | |
| Thermal Properties | Heat‑Deflection Temperature (1.8 MPa) | ASTM D648 | 79.0 | °C |
| Melting Peak Temperature | ASTM D3418 | 135 | °C | |
| Others | Volatile Matter Content | ASTM D1960 | 0.06‑0.07 | % |
| Yellowness Index | ASTM D1926 | 2.1‑2.4 | ‑ |
Processing Technology
Compression‑Sintering Molding
Brief Introduction: The original and still widely‑adopted processing method for UHMWPE.
Process flow: Fill powdered UHMWPE raw material into mold → Cold‑press at room temperature to obtain preform → Place preform in sintering furnace for heating and sintering above melting point under specified temperature and time → Cool and shape under pressure.
Key parameters: Sintering temperature is generally above melting point (e.g. 180‑220°C). Sintering time and pressure shall be precisely adjusted according to product thickness and dimension.
Ram Extrusion
Brief Introduction: Mainly used for bars, pipes and other profiles.
Features: Widely applied since the 1960s.
Other Processing Methods
With modification of conventional equipment, UHMWPE processing technologies have been developed, including single‑screw extrusion (special‑screw design required), blow molding (for large hollow containers), etc.
Processing Notes
‑ Raw‑material pretreatment: UHMWPE has low moisture absorption. Drying at 80°C for 1‑2 hours is recommended under humid storage condition to reduce internal bubbles and surface defects. ‑ Equipment requirement: For extrusion or injection molding, equipment modification or UHMWPE‑dedicated machines (extruders with powerful feeding and special‑screw structure) are generally required. ‑ Shrinkage: UHMWPE has large molding shrinkage, which shall be fully considered in mold design. ‑ Degradation prevention: Despite good thermal stability, excessive processing temperature and prolonged heating time shall be avoided to prevent oxidative degradation.
Disclaimer: All above data is for reference only.
