Polyethylene Terephthalate (PETP) - Arnite®
Arnite is a relatively new semi-crystalline polymer
developed for technical applications. It has a low friction coefficient, high hardness, stiffness, wear and creep resistance. its excellent dimensional stability and wear resistance is better than that of the acetals. temperature range is -20°C to +105°C.
FEATURES
 Low friction coefficient
Dimensional stability both at temperature and humidity
Compressive strength even at low temperature
Excellent machinability
High fatigue resistance
Colour: natural
WEAK POINT
The material is very stiff so the shock resistance is not high. It is possible to modify it with the addition of other polymers but this operation is done to the detriment of such characteristics as stiffness, compressive and flexural strength which are the typical features of PET. Permanent use in water above 70°C is not recommended due to the danger of hydrolysis and resulting brittleness.
APPLICATION
Mechanical: thanks to its low friction coefficient it is particularly suitable for sliding blocks, slide ways, bearings, guides, etc. Its dimensional stability makes it an excellent choice for precision parts where tight tolerances must be maintained both in moist and hot conditions.
Food contact: it is physiological inert and extensively used in the food industry.
Electrical: the excellent electrical features (stable in the long run) make PET suitable for insulators and other electrical
components.
Chemical: good resistance to acids and chlorine solutions.
The graph compares the friction coefficient and
the compressive strength of PA6 - POM -PET.
White: friction coefficient
Green: compressive strength |
