Polyamides... old polymer still learning new tricks!

EMS-Grivory answers questions on the strengths of their product range.

Q) What is the proven material for metal replacement?

Grivory GV The materials in this product range are based on semi-crystalline polyamides with partially aromatic content. Grivory is used in the manufacture of technical components which are characterised by:
• high levels of stiffness and strength
• little change in property values after absorption of moisture
• low dampness and water absorption
• good dimensional stability and low warpage
• good chemical resistance, typical of polyamides
• good surface quality
• efficient and economical production

The new material Grivory GVX now takes us a step further. With clearly improved mechanical properties, the range of metal replacement applications has been significantly widened. Grivory GVX is characterised in particular by:
• highest stiffness and strength values
• very low warpage
• simple processing

Q) Do we have a material that performs at high temperatures?

Grivory® is the trade name for a group of technical thermoplastics manufactured and distributed by EMS-GRIVORY. Grivory HT is a semi-crystalline thermoplastic construction material based on polyphthalamide (PPA).

EMS-GRIVORY developed its own innovative process to manufacture, polymerise and compound Grivory HT.

EMS-GRIVORY has grown to become one of the world’s leading providers of polyphthalamides and leads the field on the European market.

Grivory HT is characterised by its high-performance properties. Technical injection-moulded parts made from Grivory HT retain their shape even at high operating temperatures. Thanks to its properties, Grivory HT is undoubtedly a high-performance plastic. In terms of characteristics such as stiffness and strength, among the most important in metal replacement, Grivory HT outperforms materials such as PPS or PEEK at operating temperatures up to 120°C.

Grivory HT is used for the efficient manufacture of high-quality technical components that are characterised by:
• stiffness and strength at high operating temperatures
• little change in property values after absorption of water
• good dimensional stability and low warpage
• good chemical resistance
• good surface quality
• economical production

Q) Do EMS have a transparent polyamide?

Grilamid TR grades are amorphous thermoplastics which, due to their composition, combine the excellent properties of semi-crystalline polyamide 12 grades with those of an amorphous thermoplastic in a unique way.

This is highlighted in some of the exceptional characteristics which include high chemical and stress crack resistance combined with excellent transparency.

The main features of Grilamid TR are:
• high transparency
• good chemical resistance
• low density
• low moisture absorption
• good flexural bending strength
• high heat distortion temperature

Grilamid TR is a transparent polymer in granulate form, which combines a variety of excellent properties. This product is such that specific property requirements can be achieved through modification of the material. A noble polymer with unlimited possibilities.

Q) How does EMS-GRIVORY make a difference?

Innovation is essential to EMS-GRIVORY’s success. By developing new products, the R&D team lays the foundation for continuous innovation in EMS-GRIVORY’s speciality portfolio.

Research and development involves chemists, physicists and engineers working together on developing and improving our products and processes, thus guaranteeing a multidisciplinary approach.

Offering our customers tailor-made products is the guiding principle behind our developments, be they customised product developments or long-term innovations. Our products have been developed to build on the strengths of PA materials and improve on the challenges.

We help our customers develop new applications with an extensive product characterisation service. Technical documentation forms the basis for component design.


Q) How can EMS-GRIVORY help to find a solution?

The strengths of EMS-GRIVORY lie not only in the development and manufacture of these high performance polymers, but also in the creation of innovative system solutions with customers worldwide. Cost and weight savings through metal replacement are the focus topic but EMS-GRIVORY also offers unique solutions for high quality surfaces, designs and colours.

In this way, EMS-GRIVORY provides intensive customer support throughout the whole development process and even during running serial production.

Please visit our website www.emsgrivory.com or email jane.hemmings@uk.emsgrivory.com for further information.


Author
EMS Chemie (UK) Ltd

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