UHMWPE
Ultra-high molecular weight polyethylene (UHMWPE) refers to the linear polyethylene whose average molecular weight is more than 1.5 million,the molecular weight of ordinary polyethylene is only 20~300 thousands.Comparing with HDPE,LDPE and other plastic materials,UHMWPE has the unmatched overall performance.
High abrasion resistance,four times higher than nylon PA66,Teflon,six times higher than carbon steel,the best in all synthetic resin.
High impact strength,two times higher than PC,five times higher than ABS,it can maintain high toughness at the liquid nitrogen temperature (-196℃).
Better self-lubricating property is fairly with PTFE,the friction coefficient is only 0.07~0.11 and 1/4~1/3 of steel friction coefficient.
Impact energy absorption value is the highest in all plastics, has the best silencing effect.
High chemical stability,can resist all kinds of corrosive medium and organic medium in a certain temperature and concentration range.
Wonderful anti-adhesive capability,second only to PTFE-king of plastic.
Completely health non-toxic,can be used in contact with food and medical industry.
The smallest density in all engineering plastics,56% lighter than PTFE,22% lighter than PC,
UHMWPE can be made into gears, cams, impellers, rollers, pulleys, bearings, bearings, bushings, pins, gaskets, seals, flexible couplings, screws and pipe clamp,based on the excellent property of abrasion and impact resistance.These parts are used in textile machinery,paper-making machinery,packaging machinery.
Technical Data
|
Property
|
Test
Standard
|
Unit
|
PE300
|
PE500
|
PE1000
|
|
Density
|
ISO1183
|
g/cm3
|
0.98
|
0.98
|
0.98
|
|
Average
Molecular Weight
|
---
|
g/mol
|
4.5*106
|
7.2*106
|
9.2*106
|
|
Water
Absorption
|
---
|
%
|
< 0.01
|
< 0.01
|
< 0.01
|
|
Tensile
Stress F(150/10)
|
ISO11542-2
|
MPA
|
0.22±0.05
|
0.34±0.07
|
0.51±0.09
|
|
Yield
Elongation
|
ISO291
|
%
|
≤20
|
≤20
|
≤20
|
|
Yield
Stress
|
ISO527
|
MPA
|
≥17
|
≥17
|
≥17
|
|
Elongation
at Break
|
ISO291
|
%
|
>50
|
>50
|
>50
|
|
Tensile
Modulus
|
ISO291
1mm/min
|
MPA
|
570
|
680
|
790
|
|
Ball
Indentation Hardness(30s value test load 358N)
|
ISO2039
|
N/mm2
|
35
|
35
|
35
|
|
Shore
Hardness D (15s value)
|
ISO868
|
---
|
60
|
60
|
61
|
|
Charpy
Impact Strength
(angle
14)
|
ISO11542-2
|
KJ/m2
|
≥90
|
≥120
|
≥150
|
|
Min.Working
Temperature
|
---
|
℃
|
-269℃
|
-269℃
|
-269℃
|
|
Heat
Deflection Temperature
|
ISO291
|
℃
|
80℃
|
80℃
|
80℃
|
|
Vicat
Softening Point
|
ISO291
|
℃
|
130℃
|
130℃
|
130℃
|
|
Melting
Point
|
ISO3146-C
|
℃
|
130~135
|
130~135
|
130~135
|
|
Linear
Thermal Expansion Coefficient(23℃~80℃)
|
ISO11359
|
℃-1
|
≈2*10-4
|
≈2*10-4
|
≈2*10-4
|
|
Thermal
Conductivity 23℃
|
ISO291
|
---
|
0.41
|
0.41
|
0.41
|
|
Volume
Resistance
|
ISO291
|
Ω.m
|
>1012
|
>1012
|
>1012
|
|
Surface
Resistance
|
ISO291
|
Ω
|
>1012
|
>1012
|
>1012
|
|
Dielectric
Strength
|
ISO291
|
KV/mm
|
45
|
45
|
45
|
|
Dielectric
Constant(under 100HZ 1mhz)
|
ISO291
|
---
---
|
2.1
3.0
|
2.1
3.0
|
2.1
3.0
|
|
Comparatice
Tracking Index
(CTI
CTIM)
|
ISO291
|
---
---
|
600
600
|
600
600
|
600
600
|
|
Arc
Resistance
|
ISO291
|
Rating
|
L4
|
L4
|
L4
|