Vestamid® L-Polyamide 12

Evonik is one of the world's largest producers of polyamide 12 (PA 12), which it markets as VESTAMID® L. We benefit here from backward-integrated production: From butadiene as the starting material Evonik produces laurolactam, the monomer for PA12, in a multi-stage process. Evonik's VESTAMID® L compounds comprise a large number of different products tailored precisely to the requirements of processors and end users. The properties of semicrystalline polyamides are determined by the concentration of amide groups in the macromolecule. This is lower in PA 12 than in all other commercially available polyamides, which accounts for its special properties:
  • Minimal water absorption: molded parts show almost no dimensional changes with variation in atmospheric humidity.
  • Extraordinarily high impact resistance and Charpy notched impact strength, even well below freezing point
  • Good to excellent resistance to greases, oils, fuels, hydraulic fluids, and many solvents as well as to salt solutions and other chemicals
  • Excellent resistance to stress cracking, even for metal parts encapsulated by injection molding or embedded into the plastic
  • Excellent abrasion resistance
  • Low dry sliding friction coefficient as compared with steel, polybutylene terephthalate, polyacetal, and other materials
  • Noise and vibration damping properties
  • Excellent resistance to fatigue caused by frequent load change
  • Easy processability
Vestamid® D-Polyamide 612

VESTAMID® D, the polyamide 612 (PA 612) from Evonik, is the polycondensation product of 1,6-hexamethylenediamine and 1,12-dodecanedioic acid (1,10-decane dicarboxylic acid). Although the carbonamide group concentration is slightly higher than in polyamide 12, it is significantly lower than in polyamide 6 or polyamide 66. VESTAMID® D molded parts therefore have virtually the same valuable properties as VESTAMID® L parts:
  • high toughness
  • excellent resistance to greases, oils, fuels, hydraulic fluids, water, alkalis, and salt solutions
  • excellent resistance to stress cracking, even when subjected to chemical attack and when used to encapsulate metal parts
  • Low sliding friction coefficient and high abrasion resistance even under dry conditions

 		 Vestamid® E-Polyamide 12 elastomer

The PA 12 elastomers belong to the class of materials known as thermoplastic elastomers (TPEs). These are block copolymers consisting of PA 12 segments and polyether segments (polyether block amides or PEBAs). Products rich in PA 12 have the basic properties of that polymer. With increasing polyether content the elastomer character becomes more marked: The polymers are more flexible and have higher cold impact strength. Thanks to their outstanding properties they are indispensable in a large number of applications.

Compared with competitive thermoplastic elastomers, VESTAMID® E compounds are distinguished particularly by the following properties:
  • low density
  • good resistance to chemicals and solvents
  • ease of processing, coloring, and overmolding
  • very easily decorated by heat transfer printing
  • excellent low-temperature impact strength
  • hardness and flexibility can be varied over wide ranges
  • high elasticity and good resilience
  • only slight temperature dependence of mechanical properties
  • free from volatile or leaching plasticizers

VESTAMID® E compounds are suitable for precision injection moldings, such as noiseless gears and functional elements of sports shoes, as well as for high-performance extrusion components like paint spray hoses, vacuum brake booster lines, and high-quality decorative films. We can provide you with unstabilized or heat- and light-stabilized material, according to your requirements. 

Evonik has developed a transparent VESTAMID® polyamide elastomer for the manufacture of high-quality high-tech sports shoe soles.
 


For more details:
Please kindly feel free to contact us.
Tel: +66-2630-2827-28, +66-2236-5227-32
Fax: +66-2630-2829
Email: sales@sy-smile.com