high strength: 50–105 MPa (yield stress, tensile strength, compressive strength),
excellent toughness (grooved Charpy) – does not break,
wide temperature range for applications: from -50°C to +210°C,
very good chemical resistance, in comparison with the PA, POM, PET materials,
physiologically inert, it can come in contact with food and medicine,
high hardness (Rockwell): M 75 – M 114,
dimensional stability, good damping capability,
favorable creeping resistance: 10–30 Mpa tension for 1% extension under 1000 h at 23°C,
good electrical insulation and dielectric properties,
good resistance to high energy radiation.
Cutting (turning, milling, drilling, sawing): Traditional metalworking – or in certain cases, woodworking tools – carbon steel, rapid steel, hard metal, diamond can be used in sharp design only. Cooling is recommended, which allows the following cutting rates e. g. v = 200–400 m/min for turning and milling, v= 50–100 m/min for drilling.
Adhesive bonding: feasible (difficult for PVDF).
High Performance Materials (HPM) II. Products
Unfilled, unreinforced polyphenylene-ether. Excellent resistance to hydrolysis, negligible water absorption. Excellent resistance to acids, basis. Good heat and ageing resistance. Widely used from electronic applications to auto industry, due to the excellent combination of mechanical properties and chemical stability.
The favorable properties of natural PPE are complemented with a greater degree of rigidity, dimensional stability and hardness.
Crystalline, unreinforced polyvinylidene-fluoride (PVDF). Apart from its good, mechanical, heat and electric properties, its resistance to chemicals is outstanding.
On request. PVDF reinforced with carbon fibres. Esd material. Excellent chemical resistance. Due to the carbon fibres the dimensioal stability is also improved. Surface resistivity: 104 Ω.
It offers an optimal combination of mechanical, electrical and heat-related properties. Low-burning, its combustion is accompanied by a low degree of smoke production. Good insulator, popular material in electrical industry and electronics.
Due to glass fiber reinforcement, the properties of natural PEI are complemented with greater dimensional stability.
Unreinforced, unfilled, amorphous polysulphone (PSU). High purity material, good resistance to chemicals and hydrolysis. Excellent heat and ageing resistance. Long-term use is possible
up to 180°C.
Unreinforced, unfilled, amorphous polyphenylenesulphone (PPSU). It has a better impact energy value than PEI and PSU materials. It is extremely resistant to hydrolysis. It can be steam sterilized. Widely used in health care and food industry.
DOCASON PPSU MT
Material for medical technology. Autoclavable. Excellent thermal dimensional stability. High strength, hardness and rigidity.
Unreinforced, unfilled, amorphous polysulphone (PSU). High purity material, good resistance to chemicals and hydrolysis.