Ensinger offers a wide range of engineering plastics with individual modifications from the following product families: Nylon (Tecamid, Tecast), Acetal (Tecaform), Polyester (Tecapet), High
temperature plastics, Tecapeek - contact Plastral for all your requirements.
Engineering plastics can be used permanently at temperatures between 100°C and 150°C. In general, this product group is also referred to as technical thermoplastics. Engineering plastics demonstrate good mechanical characteristics, high dimensional stability, good chemical resistance and resistance to wear.
Polyamide 6 (PA 6) - TECAMID 6 - is the most common extruded polyamide and offers a balanced combination of all typical characteristics of this group of materials. Damping properties and impact strength of the material deserve to be emphasized as much as high tenacity even at low temperatures. Good abrasion resistance, particularly against sliding friction partners with rough surfaces, rounds off the overall picture. Compared to the cast types, PA 6G - TECAST -, PA 6 has higher moisture absorption, is less wear resistant and is slightly less dimensionally stable. There is also a limit to the size of semi-finished products and the unit weight which can be achieved due to the manufacturing process.
Polyamide 66 (PA 66) - TECAMID 66 - has good rigidity, hardness, abrasion resistance and thermal dimensional stability. With respect to these particular aspects, PA66 offers certain advantages compared to PA 6. Compared to the cast types, PA 66 has higher moisture absorption. With regard to all other characteristics, PA 66 is comparable to the standard cast type PA 6 G, but more expensive.
Cast polyamides (PA6 G) – TECAST – are highly molecular highly crystalline polymers.
Semi-finished products or castings are manufactured using a pressureless casting method, whereby the raw material Caprolactam polymerizes by means of a controlled chemical reaction.
By using additives such as oil, solid lubricants or thermal stabilizers, the typical characteristics of cast polyamide can be selectively adjusted for certain applications, opening up a custom tailored range of materials to cover a wide application spectrum.
Polyacetal, also called polyoxymethylene (POM) - TECAFORM - is a semi-crystalline thermoplastic with high mechanical strength and rigidity. The polymer has good sliding characteristics and resistance to wear, as well as low moisture absorption. The good dimensional stability and particularly good fatigue strength as well as excellent machining ability make POM a highly versatile engineering material, even for complex components.
A distinction is made between homopolymers (POM-H) - TECAFORM AD - and copolymers (POM-C) - TECAFORM AH. Due to their higher crystallinity, the homopolymers have a slightly higher density, hardness and strength. The copolymers, however, have higher impact strength, higher abrasion resistance as well as higher thermal and chemical resistance.
In its molecular structure, polyethylene terephthalate (PET) - TECAPET -
is available either as an amorphous or semi-crystalline thermoplastic. Whereas
the amorphous type is highly transparent and has a lower mechanical strength,
as well as substantially inferior sliding characteristics than the
semi-crystalline type, semi-crystalline types have higher hardness, rigidity
and strength with outstanding sliding behaviour and low sliding wear (compared
to POM in damp or dry environments).
Due to its good creep strength, low moisture absorption and outstanding dimensional stability, PET is extremely well-suited for applications where complex parts and the highest requirements regarding dimensional accuracy and surface quality are needed.
High temperature engineering plastics have a permanent operating temperature of more than 150°C. It is precisely these materials that bring the superior properties of polymers - such as sliding friction characteristics, weight saving and chemical resistance - to bear, even at high permanent operating temperatures.
Using special reinforcing materials, eg, glass fibre, glass beads or carbon fibre, heat distortion resistance and rigidity can be increased even further. Additives such as PTFE, graphite and aramid fibres considerably improve the sliding friction characteristics whilst the addition of metal fibres and carbon black provide improved electrical conductivity.
Polyetheretherketone (PEEK) - TECAPEEK - is a semi-crystalline
The most well-known and important member of the polyaryletherketone group
has excellent sliding and very good mechanical properties, even under thermal load.
Outstanding chemical resistance and a high operating temperature round off its profile and make PEEK an almost universally applicable material for highly stressed parts.