High-Quality Polyimide Varnish | Trusted Supplier for Coatings
From my bench to your production line, I offer Polyimide Varnish that stands up to harsh temperatures and demanding electrical environments. As a dedicated supplier, I know that you need High-Quality coatings that protect flexible circuits and rigid boards alike. This varnish deliver excellent dielectric strength, low outgassing, and superb adhesion, even under reflow conditions. I provide easy application, fast curing, and compatibility with common solvents, making it a practical choice for your manufacturing line. You can rely on sustained insulation, minimal yellowing, and long-term reliability. I understand your need for traceable quality, compliant with industry standards, and ready for bulk orders. If you seek a trusted Supplier who can support volume production without compromissing performance, I'm here to help.
Polyimide Varnish Supplier For the Current Year
Looking for a reliable polyimide varnish supplier this year? We offer high-performance polyimide varnishes engineered for extreme-temperature insulation, outstanding dielectric strength, chemical resistance, and long-term thermal stability. Available in solventborne and solvent-free formulations, these varnishes are optimized for magnet wire coatings, transformers, aerospace electronics, and high-frequency PCBs, delivering excellent film formation, adhesion, low shrinkage and low-VOC profiles. Global buyers benefit from scalable production capacity, ISO-certified quality systems and RoHS/REACH compliance, with flexible MOQs to support prototyping through mass production. Technical teams provide formulation customization, application guidance and testing support, while reliable lead times, competitive pricing and efficient international logistics help procurement reduce risk and accelerate time-to-market without compromising performance or regulatory requirements.
| Supplier ID | Headquarters | Product Type | Solvent System | % Solids (wt%) | Viscosity (cP @25°C) | Tg (°C) | Dielectric Constant (1 MHz) | Curing Schedule | Film Thickness (μm) | RoHS | Typical Applications | Td (5% wt loss, °C) | Appearance / Adhesion |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Supplier 1 | Germany | High‑Tg Polyimide Varnish | NMP (N‑methyl‑2‑pyrrolidone) | 20 | 2,500–10,000 | 350 | 3.2 | 300°C / 1 h (stepwise imidization) | 1–25 | Yes | Aerospace flex circuits, high‑temp electronics | 560 | Amber viscous liquid / Excellent |
| Supplier 2 | USA | Flexible Film‑Grade PI | PGMEA (Propylene glycol monomethyl ether acetate) | 18 | 800–3,500 | 280 | 3.1 | 250°C / 30–60 min | 0.5–10 | Yes | FPC, passivation, dielectric layers | 520 | Light amber liquid / Good |
| Supplier 3 | Japan | Low‑Temp Cure PI (catalyzed) | Cyclohexanone | 15 | 1,200–4,000 | 230 | 3.0 | 180–200°C / 30–60 min (catalyzed) | 1–15 | Yes | Semiconductor BEOL, thin‑film coatings | 480 | Honey amber / Good |
| Supplier 4 | China | Solvent‑Free / High‑Solid PI | Solvent‑free (reactive system) | 60 | 20,000–100,000 (paste) | 300 | 3.3 | 300°C / 30–60 min | 10–200 | Yes | Wire enamels, conformal coatings, protective layers | 540 | Amber paste / Excellent |
| Supplier 5 | South Korea | Low‑Viscosity Sprayable PI | PGME / PGMEA blend | 12 | 200–1,200 | 260 | 3.15 | 220°C / 30 min | 0.3–5 | Yes | Spray conformal, inkjet, thin coating applications | 500 | Clear amber low‑viscosity / Fair–Good |
| Supplier 6 | France | High‑Modulus Reinforced PI | Toluene / Cyclohexanone blend | 25 | 3,000–12,000 | 340 | 3.4 | 280–320°C / 1 h | 2–50 | Yes | Structural composites, high‑temp adhesives, electronics | 580 | Dark amber viscous / Excellent |
| Notes: Properties shown are typical ranges for varnish formulations used in electronics and industrial applications. Viscosity, solids content and curing schedules may vary by specific formulation and processing conditions. | |||||||||||||
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