The molecular chain length of UHMWPE is 10 ~
20 times that of hdpe. The main advantages of longer molecular chains (higher
molecular weight) give UHMWPE are toughness, wear resistance and resistance to
stress cracking. Because it is a kind of polyethylene, UHMWPE also has
lubricity, chemical resistance and general purpose HDPE excellent electrical
properties.
Long molecular chains make materials
difficult to process in common moulding and extrusion equipment. When heated
above the melting point, UHMWPE becomes transparent but does not flow.Chemical
and performance UHMWPE is produced by ziegler polymerization. The process
requires a particularly high degree of purity, ethylene monomer impurity
control in a few parts per million. The product is a white powder with a
particle size similar to that of table salt.
UHMWPE is used for low speed bearing housing.
Low friction coefficient is further reduced by adding siloxane, aluminum
disulfide, graphite and special paraffin wax. In the food processing industry,
UHMWPE self-lubricity, easy purification, low flavor gas/flavor transmission
and boiling water resistance are used. Has met FDA and USDA requirements for
use in food, water, and pharmaceutical industries. Some of the USES of UHMWPE
are based on its noise absorption and shock absorption. If UHMWPE is needed,
dye can be used for coloring, while pigments are slightly inferior.
PTFE/Polymer/UHMWPE
Tube Ram Extruder, PTFE/Polymer/UHMWPE Rad Ram Extruder, Gasket machine, Plastic
Pipe machine, etc. These machines can be used to produce a variety of fields
need some ptfe, polymer, ultra high molecular weight and other products.
UHMWPE may be used in a new generation of
self-unloading ore carriers, railway wagons and large trucks due to its smooth,
non-viscous and abrasion resistance. These properties make it also useful for
agriculture and earth-moving machinery, with UHMWPE materials to protect steel.
The combination of chemical resistance and surface smoothness has many
applications. For food processing industry, UHMWPE is used as the surface
material of meat cutting board. UHMWPE is used as contact surface and roller
for processing food and medicine conveyors. It has the properties of
self-lubricating, resistance to boiling water and resistance to chemical
cleaner.
