Epoxy Base Resin: Viscosity 500-2000 cP at 25°C

Component Specifications

Definition

Epoxy base resin is a synthetic thermosetting polymer derived from epichlorohydrin and bisphenol-A, characterized by its excellent electrical insulation properties, high mechanical strength, chemical resistance, and thermal stability. In electrical-grade epoxy resin compounds, it serves as the matrix material that binds fillers, hardeners, and additives to form rigid, durable insulating components for electrical equipment.

Working Principle

Epoxy base resin functions through a curing process initiated by a hardener (typically amines or anhydrides), which triggers cross-linking polymerization. This transforms the liquid resin into a solid, three-dimensional network structure, providing electrical insulation by preventing current leakage, mechanical support, and protection against environmental factors like moisture and chemicals.

Materials

Bisphenol-A epoxy resin (e.g., DGEBA type), with optional modifications for enhanced properties such as flame retardancy (e.g., brominated epoxy) or flexibility (e.g., aliphatic epoxy).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Viscosity	500-2000 cP at 25°C
Volume Resistivity	1e13-1e15 ohm·cm
Dielectric Strength	15-20 kV/mm
Thermal Conductivity	0.2-0.5 W/m·K
Epoxy Equivalent Weight	180-190 g/eq
Glass Transition Temperature	100-150°C

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

Standards

ISO 16797, DIN EN 60455

Parent Products

This component is used in the following industrial products

Electrical Grade Epoxy Resin Compound

Thermosetting polymer compound for electrical insulation and encapsulation in distribution equipment.

View Product Details

Electrical Insulation Epoxy Resin Compound

Thermosetting epoxy compound for electrical insulation in equipment manufacturing

View Product Details

Engineering Analysis

Risks & Mitigation

Incomplete curing leading to reduced insulation
Thermal degradation at high temperatures
Moisture absorption affecting dielectric properties

FMEA Triads

Trigger: Incorrect hardener ratio or mixing
Failure: Poor curing, resulting in weak mechanical strength and electrical failures
Mitigation: Strict process control, automated mixing systems, and quality checks

Trigger: Exposure to high humidity during storage
Failure: Reduced dielectric performance due to moisture absorption
Mitigation: Store in sealed containers with desiccants, control warehouse humidity

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±5% on viscosity and epoxy equivalent weight

Test Method

ISO 16797 for electrical properties, ASTM D257 for resistivity, IEC 60243 for dielectric strength

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Epoxy Base Resin

Manufacturer profiles associated with Epoxy Base Resin.

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Related Components

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Marking Strip

A durable marking strip used for terminal identification in motor terminal blocks to ensure proper electrical connections and safety compliance.

Gland Body

A gland body is the main housing component of an aluminum cable gland that provides mechanical protection and environmental sealing for electrical cables entering enclosures.

Frequently Asked Questions

What is the difference between epoxy base resin and cured epoxy?

Epoxy base resin is the uncured liquid or semi-solid precursor, while cured epoxy is the hardened, cross-linked final product after reaction with a hardener, exhibiting full mechanical and electrical properties.

Why is epoxy resin preferred for electrical applications?

It offers excellent dielectric strength, low moisture absorption, high adhesion, and thermal stability, making it ideal for insulating and protecting electrical components.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Epoxy Base Resin