Electrical Insulation Epoxy Resin Compound

Product Specifications

Technical details and manufacturing context for Electrical Insulation Epoxy Resin Compound

Definition

This product is a formulated epoxy resin compound designed for electrical insulation in industrial equipment manufacturing. It is a thermosetting polymer that cures into a solid, non-conductive matrix, providing dielectric strength, thermal stability, and mechanical protection for electrical components. The compound is used as a potting, encapsulating, or coating material to prevent electrical leakage, short circuits, and environmental damage. It is supplied as a liquid resin mixture that requires mixing with a hardener before application. The cured material forms a durable, chemically resistant barrier that maintains electrical integrity under various operating conditions. Key properties include a dielectric strength of 16–20 kV/mm (IEC 60243), volume resistivity of 1×10^14–1×10^15 Ω·cm (IEC 60093), thermal conductivity of 0.3–0.6 W/m·K (ISO 22007), and a glass transition temperature of 120–150°C (ISO 11357). The compound has a pot life of 30–60 minutes (ISO 8130-6), a comparative tracking index of 600–800 V (IEC 60112), and a viscosity of 5000–15000 mPa·s at 25°C (ISO 2555). After full cure, it exhibits flexural strength of 80–120 MPa (ISO 178), water absorption of 0.1–0.3% after 24h immersion (ISO 62), and an operating temperature range of -40 to 130°C continuous, with short peaks up to 150°C (IEC 60216). Density ranges from 1.1–1.4 g/cm³ (ISO 1183), and curing time is 4–8 hours at 80°C (ISO 8130-6). The material includes Bisphenol-A epoxy resin, amine or anhydride hardener, silica filler, and flame retardant additives. These values are typical ranges for the product type; actual performance depends on the specific formulation and application. Always verify model-specific data with the manufacturer or supplier.

Working Principle

The liquid resin mixture undergoes chemical cross-linking (curing) when exposed to heat or a catalyst. This reaction transforms the low-viscosity liquid into a solid, three-dimensional polymer network. The cured matrix is electrically non-conductive, physically isolating electrical components and preventing current leakage. The cross-linked structure also provides thermal and mechanical protection, resisting environmental factors such as moisture and chemicals. The curing process is exothermic and can be accelerated by temperature; the specified curing time of 4–8 hours at 80°C is typical. The material's dielectric strength and volume resistivity ensure effective insulation, while the glass transition temperature indicates the upper limit for structural integrity. Proper mixing and degassing are essential to avoid voids that could compromise insulation performance.

Common Materials

Bisphenol-A Epoxy Resin, Hardener (Amine or Anhydride), Silica Filler, Flame Retardant Additives

Technical Parameters

Parameter	Typical range	Notes & selection driver
Dielectric StrengthRequired	16–20 kV/mm	Electrical breakdown voltage per unit thicknessIEC 60243
Volume ResistivityRequired	1×10^14–1×10^15 Ω·cm	Electrical resistance through material volumeIEC 60093
Thermal ConductivityRequired	0.3–0.6 W/m·K	Heat transfer capability of cured materialISO 22007
Glass Transition TemperatureRequired	120–150 °C	Temperature at which polymer transitions from glassy to rubbery stateISO 11357
Pot Life	30–60 minutes	Working time before viscosity increases significantlyISO 8130-6
CTI (Comparative Tracking Index)	600–800 V	Resistance to surface electrical trackingIEC 60112
Viscosity	5000–15000 mPa·s	At 25°C; affects impregnation.ISO 2555
Flexural Strength	80–120 MPa	After full cure.ISO 178
Water Absorption	0.1–0.3 %	24h immersion; affects insulation.ISO 62
Operating Temperature	-40–130 °C	Continuous; short peaks up to 150°C.IEC 60216
Density	1.1–1.4 g/cm³	Depends on filler content.ISO 1183
Curing Time	4–8 h	At 80°C; faster at higher temperatures.ISO 8130-6

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Epoxy Base Resin Part
Primary polymer matrix providing mechanical and chemical properties

Material: Bisphenol-A or Novolac epoxy
Curing Agent Part
Catalyzes cross-linking reaction to transform liquid to solid

Material: Amine or anhydride compound
Inorganic Filler Optional Part
Improves thermal conductivity, reduces shrinkage, and lowers cost

Material: Silica, alumina, or ceramic powder
Flame Retardant Optional Part
Enhances fire resistance properties

Material: Phosphorus or halogen-based compounds

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Electrical Insulation Epoxy Resin Compound.

Manufacturers of Electrical Insulation Epoxy Resin Compound

Manufacturer profiles associated with Electrical Insulation Epoxy Resin Compound.

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Frequently Asked Questions

What is the typical dielectric strength of this epoxy compound?

The dielectric strength is typically 16–20 kV/mm, measured according to IEC 60243. This value indicates the material's ability to withstand electrical stress without breakdown. Actual performance may vary with thickness and test conditions, so verify with the supplier for your specific application.

How is the compound applied for electrical insulation?

The compound is supplied as a liquid resin that must be mixed with a hardener before use. It can be applied by potting, encapsulating, or coating electrical components. After application, it cures at elevated temperature (e.g., 80°C for 4–8 hours) to form a solid insulating barrier. Ensure proper mixing and degassing to avoid air bubbles.

What is the operating temperature range?

The continuous operating temperature range is -40°C to 130°C, with short-term peaks up to 150°C, as per IEC 60216. Exceeding these limits may degrade the material's insulation properties. Always confirm the exact limits for your specific formulation.

Does the compound provide flame retardancy?

The compound includes flame retardant additives, which help reduce flammability. However, specific flame retardant ratings are not listed in the source data. For applications requiring specific fire safety standards, consult the manufacturer for detailed information.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 10 bar post-cure
other spec:	Viscosity: 500-2000 cP at 25°C (pre-cure), Dielectric Strength: >15 kV/mm, Cure Time: 2-24 hours depending on temperature
temperature:	-40°C to +155°C continuous, peak to +180°C

Electrical Insulation Epoxy Resin Compound

Product Specifications

Industry Taxonomies & Aliases

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards