E962 Solvent-Based Insulating Varnish
Product Applications:
E962 is an oil-based electrical insulating varnish designed for the protection and insulation of electrical and electronic components. It supports both air-drying and oven-baking curing, allowing users to select a curing method based on their production process and efficiency requirements.
E962 is widely used as a PCB protective varnish and electrical insulation coating for printed circuit boards (PCBs), inductor coils, transformers, small and medium-sized electric motors, motor windings, and other electrical appliances.
The varnish is suitable for applications that require a reliable insulating coating on electrical components and assemblies. It can be used in electronic manufacturing, transformer production, coil insulation, motor protection, and general electrical equipment protection.
- Description
- Technical Data
- FAQ
Description
Product Features:
· Modified Polyester Resin
· Air-Drying Capable
· Soldering Compatible
· Thermal Class B (130°C)
· UL Recognized: E335405
Physical Properties：
| Item | Specification | |
| Varnish Properties | Appearance | Light yellow, transparent |
| Viscosity (25°C, Ford Cup 4#, s) | 40~60 | |
| Specific Gravity (25°C) | 0.95±0.02 | |
| Non-volatile Content (105°C/3h, %) | 40.0±2.0 | |
| Drying Time | Tack-free (25°C, min) | 10-15 |
| Tack-free (80°C, min) | 5-10 | |
| Through-dry (80°C, min) | 75 | |
| Dielectric Constant | 1MHz, 25°C | 2.7 |
| Volume Resistivity | Normal condition (Ω·cm) | ≥1×10¹⁴ |
| After water immersion 24h (Ω·cm) | ≥1×10¹³ | |
| Dielectric Strength | Normal condition (kV/mm) | ≥40 |
| After water immersion (23±2°C, distilled water, 24h) | ≥30 | |
| Thermal Class | Class B (130°C) | |
| Recommended Thinner | X-7 Series | |
Precautions:
· Determine the dilution ratio, baking temperature, and baking time experimentally based on product shape, size, and specific requirements. Recommended baking temperature: do not exceed 100°C.
· The product may absorb moisture and turn whitish under high humidity; performance remains unaffected after baking.
· This product is flammable; keep away from fire and heat sources.
Packaging, Storage/Transport & Shelf Life：
· Packaging: metal pails, 18 KG/pail
· Storage & transport: flammable chemical — keep away from fire and heat; handle per regulations; store cool (RT), dark and dry.
· Shelf life: stored sealed, 6 months at 5-25℃.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for E962?
The standard MOQ for E962 is one 18 kg pail. For trial quantities below the standard MOQ, please contact us for sample availability and a customized quotation.
What packaging is available?
E962 is supplied in the following standard packaging:
- 18 kg per pail
Please contact us for bulk-order pricing, OEM labeling, or customized packaging requirements.
Can I request a sample before placing a bulk order?
Yes. Free samples are available for quality evaluation and application testing. Please contact us to confirm sample availability and quantity. The customer is responsible for shipping costs.
What is E962 used for?
E962 is an oil-based electrical insulating varnish used for the protection and insulation of printed circuit boards (PCBs), inductor coils, transformers, motor windings, small and medium-sized electric motors, and other electrical appliances.
What curing methods are suitable for E962?
E962 supports both air-drying and oven-baking curing. The suitable curing method depends on your production process, coating thickness, equipment, and performance requirements.
What are the recommended drying and baking conditions?
Drying and baking conditions should be determined according to the coating thickness, substrate, ambient temperature, ventilation, and production requirements. Please refer to the Technical Data Sheet (TDS) or contact our technical team for recommended process parameters.
What application methods can be used?
E962 may be applied by brushing, dipping, spraying, or other suitable coating methods, depending on the component design and production process. Application trials are recommended before mass production.
Is E962 suitable for transformer coils and motor windings?
Yes. E962 is suitable for electrical insulation applications involving transformer coils, inductor coils, motor windings, small and medium-sized motors, and related electrical components. Please verify compatibility and performance under your actual operating conditions.
What is the shelf life of E962?
E962 has a shelf life of 6 months from the manufacturing date when stored unopened under recommended conditions. Please check the product label or contact us for batch-specific information.
How should E962 be stored?
Store E962 in a cool, dry, and well-ventilated place away from direct sunlight, heat sources, sparks, open flames, and ignition sources. Keep the pail tightly sealed when not in use. Please refer to the Safety Data Sheet (SDS) for complete storage and handling instructions.
Does E962 meet environmental compliance requirements?
E962 complies with applicable RoHS, REACH, and halogen-free requirements. Technical and compliance documents, including TDS, SDS, COA, and available declarations, can be provided upon request.
Do you provide technical support?
Yes. Our technical team can provide guidance on insulating-varnish selection, component compatibility, application methods, drying or baking processes, and production-line optimization.