What is UHMWPE fiber?
UHMWPE (ultra-high molecular weight polyethylene) fiber, made from polyethylene with molecular weight of 1 million to 5 million, with the highest specific strength, the highest specific modulus and the lightest specific gravity in the world, is one of the three top high-performance fibers today, which includes aramid fiber, carbon fiber and UHMWPE fiber.
Comparison of Strength and Density of Several Fibers
(Dyneema® is UHMWPE fiber)
Characteristics of UHMWPE fiber
♦UHMWPE fiber was first commercialized by Royal DSM N.V. in the late 1970s.
♦One of the three high-tech fibers (carbon fiber, aramid fiber and UHMWPE fiber) in the world.
The fiber has the following excellent properties:
- Ultra high strength
- Light weight
- Great impact resistance
- Great electrical insulation
- Great thermal conductivity
- Great chemical corrosion resistance
- Great UV resistance
The disadvantages of UHMWPE fiber are low heat resistance (the melting temperature under stress is 145 ℃ – 160 ℃), a little poor compressibility, flammability and creep.
Synthesis technologies of UHMWPE fiber
The method of gel spinning – hot stretching has become a relatively developed industrial production technology. According to the different solvents, it can be divided into dry synthesis (ten naphthalene and other high volatile solvents, represented by DSM / Toyobo) and wet synthesis (mineral oil, white oil and other low volatile solvents, represented by Honeywell / Mitsui Chemicals).
Compared with wet spinning process, dry spinning has the advantages of short process, environmental protection and high comprehensive performance index of products.
Applications of UHMWPE fiber
|Mooring, trawling, towing, offshore aquaculture, offshore oil production and seabed acquisition||Offshore oil retaining dike, fishing trawl, purse seine, deep-sea aquaculture cage|| |
Hull and components
|Sea mine laying net, parachute rope||Soft bulletproof clothing, parachute, camouflage net|| |
Tank armor plate, light armored vehicle body, aircraft, armed helicopter armor plate, automobile bulletproof plate, bulletproof helmet, etc
|Anti cutting gloves, anti cutting work clothes, stab proof clothes|| |
Ballistic helmet, high-performance ballistic plate, ballistic shield
|Mountaineering rope, fishing line, racket net wire, kite rope, bow string||Sail, blowing boat, fencing suit|| |
Rowing, archery bow, ski, hockey stick, fishing rod
|Air ship sea rescue net, parachute rope|| |
Structural parts in aircraft cabin and cockpit safety protection door
|Surgical suture, artificial muscle||Medical gloves|| |
X-ray room anti shielding workbench
|Cargo sling||Protective and cargo lifting net|| |
|Flexible container, lifting rope, vehicle traction rope, balloon pull rope, helicopter lifting rope, stone filled net bag, optical cable reinforcing core||Blanket, conveyor belt|| |
Wireless transmitting fairing
Body Armor and Armored Car
Anti Cutting Gloves
Mooring and Lifting Band