High strength UHMWPE fabric bullet proof materials
Description
The three major high-performance fibers in the world today are: aramid fiber, carbon fiber, and ultra-high molecular weight polyethylene fiber. At present, aramid fiber is only produced in small quantities in China due to technical problems; carbon fiber is still in the test and primary production stage, and the product can only be used in resistant Since the breakthrough of key production technology in 1994, ultra-high molecular weight polyethylene fibers have formed a number of industrialized production bases of ultra-high molecular weight polyethylene fibers.
Specification
| Hard weft free cloth | ||||||||
|
brand |
The raw materials |
type |
The surface density (g/m squared) |
width (m) |
The length of the (m) |
Product features |
Bullet-proof performance |
|
|
Protection level |
Surface density (kg/m²) |
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|
EH131 |
UHMWPE fiber |
2UD |
120 + 10 |
1.2/1.6 |
200 | Excellent bulletproof performance, good rigidity, light weight |
NIJ Ⅲ (M80) |
13.5 (Platen) |
|
GA141 level 3 |
5.4 (Pressure plate) |
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|
AH101 |
Aramid fibers |
4UD |
240 + 10 |
1.2/1.6 |
100 | Excellent bulletproof performance and light weight |
GA141 level 3 |
5.56 (Press plate) |
Characteristics
Advantage
1.light texture
The density of UHMWPE is only 0.97-0.98g/cm3, and it can float on the water.
2.Excellent mechanical properties
The specific strength is more than ten times that of steel wire of the same section
·Specific modulus is second only to special carbon fiber
Low elongation at break, outstanding impact and cut resistance
·High wear resistance and self-lubricating
Fatigue performance is the strongest among existing fibers and has a long service life
3.low water absorption
Drying is generally not required before processing
4.Strong weather resistance
It has excellent anti-ultraviolet ability. After 1500h of sun exposure, the strength is still more than 80% preserved. It can shield radiation, so it can be used as a shielding plate for nuclear power plants
5.Hygienic and non-toxic
Can be used in contact with food and drugs
Disadvantage
1.poor heat resistance
The melting point of ordinary polyethylene is roughly the same as that of ordinary polyethylene, which is about 140 °C.
2.High processing difficulty
Ultra-high molecular weight polyethylene has extremely poor fluidity and a melt index of almost 0, requiring special equipment for processing.
3.Low stiffness and hardness.
But this shortcoming can be improved by modification
