Reactor Resin Adhesive

Hollow reactor epoxy resin is a thermosetting composite material based on epoxy resin, formulated with anhydride curing agents, toughening agents, and various additives in scientifically optimized proportions. It is specifically designed for the impregnation, encapsulation, and casting of hollow reactor windings, aiming to enhance electrical insulation performance, mechanical stability, thermal conductivity, and environmental adaptability.

1.Base Composition:
E-51 epoxy resin and anhydride curing agent are used as the primary film-forming materials.

2.Curing Properties:
Curing temperature: 130°C (4–8 hours);
Gel time (at 100°C): ≥ 2 hours (ensuring sufficient processing time).

3.Electrical Properties:
Dielectric breakdown strength: ≥ 12 kV/mm;
Volume resistivity: ≥ 1 × 10¹⁴ Ω·cm (25°C);
Dielectric constant: ≤ 3.5 (1 MHz).

4.Mechanical Properties:
Tensile strength: ≥ 28 MPa;
Flexural strength: ≥ 55 MPa;
Adhesion strength to copper conductor: ≥ 10 MPa.

5.Thermal Properties:
Thermal conductivity: ≥ 0.19 W/m·K;
Glass transition temperature (DSC): ≥ 75°C;
Coefficient of thermal expansion: ≤ 4.5 × 10⁻⁵ /°C (25–65°C).

Insulation Enhancement: Fills gaps between conductors and between conductors and insulation layers, eliminating air and forming a continuous insulating medium to prevent partial discharge.

Mechanical Fixation: Forms a rigid structure after curing, maintaining the geometric shape of the windings and resisting vibration and deformation caused by electromagnetic forces.

Thermal Conductivity Optimization: Reduces thermal resistance by filling voids, transferring heat from conductors to the enclosure or cooling medium, thereby lowering operating temperature.

Environmental Protection: Protects against dust, moisture, and chemical substances, preventing corrosion and insulation aging.

Power Systems: High-voltage and ultra-high-voltage shunt reactors (reactive power compensation), series reactors (short-circuit current limitation), filter reactors (harmonic suppression), and neutral grounding reactors.

New Energy Generation: Reactors used in wind power converters, photovoltaic inverters, and energy storage systems, requiring high reliability.

Industrial Applications: Supporting reactors for large motors and transformers in industries such as metallurgy, petrochemical, and rail transit, suitable for harsh environments.

Special Equipment: Test reactors and pulse reactors used for electrical equipment testing or specialized power supplies, requiring precise electrical performance.