Properties And Application of SIMONA® PE 500/ SIMONA® PE 1000

The properties of Polyethylene are determined primarily by the chain length (degree of polymerisation).
In comparison to the standard polyethylene types SIMONA® PE-HWU and SIMONA® PE-HWST (M = 250,000 g/mol), SIMONA® PE 500 and SIMONA® PE 1000 have a higher molar mass (M), which can be determined using various methods. The viscosimetric method gives a value of approx. 1.2 million g/mol for SIMONA® PE 1000, while the figure calculated by means of the light scattering method is four times as high for the same material. Today, the molar mass is in many cases specified as molar mass calculated on the basis of viscometric measurements:

Mean Molar Mass

SIMONA®PE 1000	4.4-10.5 million g/mol
SIMONA®PE 500	500,000 g/mol

In international parlance, SIMONA® PE 500 is referred to as PE-HMW (high molecular weight) and SIMONA®PE 1000 is referred to as PE-UHMW (ultra-high molecular weight).

As the molecular weight increases, a number of properties improve in the high molecular types of PE, e. g.notched impact strength, stress crack resistance and expected service life. A decrease in rigidity and in abrasion is likewise dependent on increasing chain length,while the electrical properties and chemical resistance are generally independent of the molecular weight.

The high molecular weight of SIMONA® PE 500 and SIMONA® PE 1000 translates into outstanding materialspecific properties.

In addition to the general characteristics of standard PE-HD, such as

• Good resistance to stress cracks,
• No water absorption,
• Suitability for contact with foodstuffs,
• Very good electrical and dielectric properties,
• Good workability and processability

SIMONA® PE 500 and SIMONA® PE 1000 possess properties such as

• High impact strength and notched impact strength,
• High tensile strength at break and elongationat break,
• Outstanding long-term behaviour,
• Good slip properties (prevents caking),
• High abrasion resistance,
• High degree of toughness and usability even at low temperatures.

The information provided in this prod.info for SIMONA®PE 500 also applies to SIMONA® PE-HML 500 (also see prod.info SIMONA® PE)

Applications for SIMONA® PE 500/SIMONA® PE 1000

Mechanical engineering/transport, conveying and storage technology/packaging and filling systems

Profiles

Guide elements (chain and belt guides,

curves and guide rails)

Shafts (dashers, bearing shafts)

Distributors

Sliding elements (sliding rings, chain guides)

Anti-vibration spacers

(Collar) bearing bushings

Pump bodies

Cylindrical, worm and ball gears

Split and roller bearings

Supporting rails

Deflection devices/pulleys

Clamping devices

Star wheels

Bulk handling systems

Port and marine fender industry

Fender plates

Cylindrical fenders

Pier cladding

Protective elements for locks

Protective elements for bridges

Ram protection strips

Lock gate reinforcement

Food industry

Juicers

Filtration systems

Keg washing systems

Scrapers

Bottle washers

Disgorging systems

Washers for fruit vats

Cutting boards

Chopping blocks

Work surfaces

Insert panels for work tables

Surface coverings in industrial kitchens

and cold stores

Insert panels in vacuum packing machines

Food moulds

The good slip properties of SIMONA® PE 500 and

SIMONA® PE 1000 significantly improve the flow characteristics of bulk materials. This helps to reduce the number of disruptions in operation due to caking or freezing