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Solvay’s New High-performance PA Replaces Metal in Permanent Load Parts

Published on 2017-03-27. Author : SpecialChem

Solvay's New Omnix® HPPA Grades
BOLLATE, Italy -- Solvay has expanded its portfolio of specialty polymers with the introduction of Omnix® LF-4050 and Omnix® LF-4060, two high-performance polyamides (HPPA) with long fiber glass content of 50 and 60 percent respectively. These materials are ideally suited for a realm of applications subjected to permanent load or operating conditions where metal is still prevalent.

Omnix® LF Grades - Operative at High Temperature


Omnix® HPPA is used in applications where the high temperature or hydrolytic stability performance limits of PA66 are reached. The new Omnix® LF grades also overcome these limitations and are an important addition to the existing portfolio of Solvay’s high performance polyamides.

Both Omnix® LF-4050 and Omnix® LF-4060 offer cost and performance benefits against metal for components under permanent load or severe operating environments in a wide variety of markets including advanced transportation, automotive, household appliances, sports and leisure, and mechanical and industrial engineering. The new Omnix® LF grades can be obtained in natural and black and are commercially available worldwide.

LFT Technology


Dr. Eric Martin, Global Business Development Manager - Long Fiber Thermoplastics at Solvay’s Specialty Polymers Global Business Unit, explained:
Metal substitution has entered a new phase. There is a growing demand for plastics capable of reaching beyond the current performance barriers of optimized short-fiber filled thermoplastics without sacrificing design freedom, processing efficiency and surface quality. LFT technology answers these needs and is today accepted as a viable replacement for metal die castings and assemblies. There is no doubt that applying LFT technology to our Solvay polymer portfolio extends the light weighting potential of established injection molding materials. This strategy will allow us to meet corrosion and weight reduction challenges for components with very high technical requirements in terms of stiffness retention at elevated temperatures, impact strength and fatigue/creep resistance.”

Performances are Expressed in Percentage of Improvement vs. Short Fiber Reinforced Omnix® at Same Glass Fiber Loading
Performances are Expressed in Percentage of Improvement vs.
Short Fiber Reinforced Omnix® at Same Glass Fiber Loading

The LFT technology is characterized by the formation of an entangled, three-dimensional long-fiber skeleton in the finished molded parts. This feature provides a unique combination of stiffness and toughness and outstanding dimensional stability while inhibiting crack propagation.

When comparing the properties of standard reinforced Omnix® products, the ductility of Omnix® LF grades shows up to 350 percent higher notched and multi-axial impact strength while preserving material stiffness.

Such gains would be impossible to achieve with conventional impact modified compounds, where the elastomeric nature of the impact modifier generally decreases the stiffness of the material. Omnix® LF grades also exhibit high property retention under the influence of heat and moisture. When compared with standard glass filled HPPA, the LFT technology offers a stiffness improvement of 10 to 15 percent at 23°C (73°F), which rises to 85 percent at 120°C (248°F), far beyond the glass transition temperature of the matrix resin.

Furthermore, Omnix® LF grades drastically outperform short-fiber HPPA materials in creep resistance under high loads at high temperature, demonstrating the advantages of the entangled long fiber skeleton created within the parts.

Dr. Eric Martin added:
“Such benefits for long term performance are of prime importance when developing reliable polymer solutions for permanently loaded components across a wide variety of markets. Interestingly, both new grades exhibit very low warpage and remain hot-water moldable.”

Solvay is currently applying LFT technology to other specialty polymers including long fiber filled Amodel® polyphthalamide (PPA), Ixef® polyarylamide (PARA), and Ryton® polyphenylene sulfide (PPS), and is thereby proposing a unique range of solutions with high value-added properties while maintaining cost-affordable processing technologies such as injection molding.

® Registered trademarks of Solvay.

About Solvay Specialty Polymers


Solvay Specialty Polymers manufactures over 1500 products across 35 brands of high-performance polymers – fluoropolymers, fluoroelastomers, fluorinated fluids, semi-aromatic polyamides, sulfone polymers, aromatic ultra-high performance polymers, high-barrier polymers and cross-linked high-performance compounds – for use in Aerospace, Alternative Energy, Automotive, Healthcare, Membranes, Oil & Gas, Packaging, Plumbing, Semiconductors, Wire & Cable, and other industries.

About Solvay


Solvay is a multi-specialty chemical company, committed to developing chemistry that addresses key societal challenges. Solvay innovates and partners with customers in diverse global end markets. Its products and solutions are used in planes, cars, smart and medical devices, batteries, in mineral and oil extraction, among many other applications promoting sustainability. Its lightweighting materials enhance cleaner mobility, its formulations optimize the use of resources and its performance chemicals improve air and water quality.

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Source: Solvay
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