Ultra-high molecular weight polyethylene pipe series
The ultra-high molecular weight polyethylene (UHMW-PE) pipe produced by our company is a linear polyethylene pipe with a viscosity average molecular weight of more than 3.5 million. It almost concentrates the advantages of various plastics: wear resistance, impact resistance, non-scaling, chemical Stability, low temperature resistance, economy, sanitation and non-toxic properties. Ultra-high molecular weight polyethylene pipe is extruded by a special process and is a new type of engineering plastic pipe with excellent comprehensive performance.
Product Features
Wear resistance: Due to the extremely large molecular weight of UHMWPE, its abrasion resistance ranks first among plastics.
Chemical stability: UHMWPE pipe has excellent chemical stability. It is an inert material similar to polytetrafluoroethylene. It can transport various corrosive media within a certain temperature and concentration range without external need Do any anti-corrosion treatment.
Impact resistance: Ultra-high molecular weight polyethylene pipe has the highest impact resistance and impact absorption energy. Whether it is external impact or internal pressure fluctuations, it is difficult to crack, especially in a low temperature environment, its impact strength can reach The highest value, this flexibility provides a safe and reliable guarantee for the operation of the conveying system. Compared with the impact strength of other materials.
Non-scaling: Ultra-high molecular weight polyethylene has long molecular chain, few branches, few ends, low surface energy, good self-lubricating performance, so it has the characteristics of non-sticking and non-scaling, which fundamentally solves water Or the fouling and precipitation of the slurry can keep the flow rate and flow rate of the system unchanged for a long time.
Aging resistance: UHMWPE pipes have good weather resistance and aging resistance, and their service life exceeds 50 years under natural sunlight conditions.
Low temperature resistance: Excellent low temperature resistance, and its impact resistance and wear resistance are basically unchanged at -269°C. It is currently the only engineering plastic that can work at temperatures close to absolute zero.
Economical: The weight of UHMWPE pipe is eight molecules of steel pipe. Its installation adopts flange and hot-melt welding technology, which is fast and convenient, and can greatly reduce installation costs. In addition, due to its low friction coefficient (0.09), good self-lubricating performance, and its non-scaling property, its operating cost is 30% less than that of ordinary carbon steel.
Other features: It is also hygienic, non-toxic, non-absorbent, anti-static, and noise-absorbing. Its installation adopts flange or hot-melt welding technology, which is quick and convenient, safe and reliable, and can greatly reduce installation costs.
Technical index
UHMWPE performance and performance comparison with other engineering plastics
|
Project
|
ASTM
|
Unit
|
UHMWPE
|
High impact ABS
|
Nylon 66
|
Polycarbonate
|
Polyoxymethylene
|
Polytetrafluoroethylene
|
|
density
|
D1505
|
g/㎝3
|
0.935~0.975
|
1.02~1.04
|
1.13~1.15
|
1.2
|
1.41
|
2.14~2.2
|
|
Impact strength
|
D250
|
J/㎝2
|
﹥1400 Not broken
|
160~440
|
60~110
|
710~950
|
50~130
|
160
|
|
Elongation at break
|
D638
|
%
|
350
|
5~60
|
60~300
|
100~130
|
75
|
200~400
|
|
Coefficient of friction
|
D1894
|
—
|
0.07~0.11
|
0.38
|
0.37
|
0.36
|
0.18
|
0.04~0.02
|
|
Wear rate
|
D1175
|
㎎/1000time
|
70
|
770
|
175
|
280
|
210
|
250
|
|
Water absorption
|
D1505
|
%
|
＜0.01
|
0.02~0.45
|
1.5
|
0.15
|
0.25
|
＞0.01
|
|
Breakdown voltage
|
D149
|
Kv/㎜
|
50
|
14~20
|
15~19
|
16
|
15
|
20
|
|
|
|
|
Common performance indicators of UHMWPE
|
|
classification
|
project
|
UHMWPE
|
ASMT test method
|
|
Physical properties
|
Relative molecular mass/10,000
|
200-300
|
D2857
|
|
Density/(g/cm3)
|
0.945-0.975
|
D1505
|
|
Powder density/(g/cm3)
|
0.46
|
D392
|
|
Average particle size/μm
|
100-200
|
—
|
|
Mechanical properties
|
Breaking strength/MPa
|
40-45
|
D638
|
|
Elongation at break/%
|
300-400
|
D638
|
|
Flexural modulus/MPa
|
600
|
D747
|
|
Impact strength/(KJ/m2)
|
＞140
|
D250
|
|
Rockwell hardness/HRM
|
40-60
|
D747
|
|
Wear amount/(mg/1000 times)
|
70
|
D1175
|
|
Thermal properties
|
Melting point/℃
|
136
|
D2117
|
|
Heat distortion temperature/℃
|
85
|
D648
|
|
Coefficient of linear expansion/10-4℃-1
|
1.5-2.5
|
D696
|
|
Thermal conductivity/[w/(m·k)]
|
8.5
|
D177
|
|
Electrical properties
|
Volume resistivity/(Ω·cm)
|
10
|
D257
|
|
Breakdown voltage/(Kv/mm)
|
50
|
D149
|
|
Dielectric constant/106Hz
|
2.3
|
D150
|
|
