There are moments in electrical engineering when a single failure — one spark, one breakdown, one burnt wire — can shut down an entire plant. No warning. No symptoms. Just expensive downtime and chaos.

And when engineers trace the root cause, 90% of the time the culprit is insulation failure.

This is where DOMADIA™ Polyimide Yarn steps in — a next-generation insulation material engineered to handle what traditional yarns simply cannot.

From extreme temperatures to harsh chemicals to high-frequency electrical environments, Polyimide Yarn stands out as the focused phrase: the ultimate solution for electrical insulation wires.

Introduction: The New Age of Electrical Insulation

Electrical systems today demand more — more heat resistance, more flexibility, more longevity, more safety. The old materials worked for old systems.

But modern wires need modern insulation. And Polyimide Yarn, known for its exceptional thermal and electrical stability, has become the industry’s first choice.

DOMADIA™ brings this material in world-class purity, consistency, and industry-approved standards, making it ideal for power transformers, aerospace wiring, motors, EVs, and high-temperature cables.

Chemical Composition of Polyimide Yarn

Polyimide yarn is composed of high-performance aromatic polyimide polymer chains, offering a unique structure that includes:

  • Imide ring structures
  • Aromatic backbone carbon chains
  • Thermally stable polymeric bonds
  • High molecular weight polymer matrix

This molecular architecture ensures:

✔ Stability at elevated temperatures
✔ Outstanding dielectric strength
✔ High resistance to radiation & chemicals
✔ Excellent dimensional stability

Properties That Make DOMADIA™ Polyimide Yarn Superior

1️⃣ Extreme Thermal Stability

With a continuous working temperature of 260°C and short-term resistance up to 400°C, Polyimide Yarn performs when everything else melts.

2️⃣ High Dielectric Strength

Essential for cables and wires exposed to high voltages.

3️⃣ Chemical & Radiation Resistance

Unaffected by:

  • Oils
  • Solvents
  • Radiation
  • Acids and alkalis

Perfect for aerospace and nuclear applications.

4️⃣ Lightweight & Flexible

Bends without cracking, stretches without breaking — ideal for tight, compact electrical architectures.

5️⃣ Long Service Life

Polyimide yarn outlasts almost every traditional insulation material, reducing maintenance costs and downtime.

Technical Specifications (General Industry Range)

SpecificationValue
Continuous Temperature240–260°C
Melting PointNo melt (thermoset polymer)
Tensile Strength2.5–3.0 GPa
Density~1.4 g/cm³
Dielectric Strength150–220 kV/mm
Moisture AbsorptionVery low
FlammabilitySelf-extinguishing

Applications of DOMADIA™ Polyimide Yarn

Polyimide yarn excels in environments where insulation failure is not an option:

✔ Electrical Insulation Wires & Cables (Primary Application)

Used for wrapping, braiding, and strengthening high-temperature wires.

✔ Aerospace Wire Harnessing

Survives altitude, heat, and radiation.

✔ Traction Motors & EV Wiring

High-voltage environments demand its dielectric strength.

✔ Transformer Coil Insulation

Stable even in continuous heat cycles.

✔ Nuclear & Defense Electrical Systems

Zero-failure environments need zero-failure materials.

Available Shapes & Forms

DOMADIA™ supplies Polyimide Yarn in:

  • Flat Yarn
  • Round Yarn
  • Braided Yarn
  • Twisted Yarn
  • Tapes & Woven Fabrics (customized on demand)

Standards & Compliance

DOMADIA™ Polyimide Yarn complies with major industry standards:

  • IEC Electrical Insulation Standards
  • ASTM Polymer Material Standards
  • RoHS Compliant
  • REACH Compliant
  • UL-Rated Insulation Classes

Why DOMADIA™ Polyimide Yarn Is the Ultimate Solution for Electrical Insulation Wires

Let’s break it down:

  • When wires run hotter → Polyimide survives.
  • When cables face higher voltages → Polyimide stabilizes.
  • When systems demand long life → Polyimide delivers.

It saves costs on:

✔ Frequent replacements
✔ Downtime
✔ Maintenance
✔ Safety hazards

This is why global electrical and aerospace companies rely on DOMADIA™ Polyimide Yarn — because failure is not an option.

Conclusion

Electrical insulation has evolved — and Polyimide Yarn is leading the transformation. With unmatched temperature resistance, remarkable dielectric stability, and long operational life, DOMADIA™ Polyimide Yarn truly is the ultimate solution for electrical insulation wires.

If your project demands reliability, longevity, and global-standard insulation performance — you already know your material.

Need High-Temperature Insulation Materials?

Our Polyimide Yarn is trusted for aerospace, EV motors, transformers, and advanced wiring.

👉 Get a Quote from DOMADIA™

📩 Contact us today to get custom sizes and specifications for your project.

Talk to: Er.Pankaj Domadia | Kairav Domadia | Aadil Domadia | Pragati Sanap | Pooja N N 

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