Adhesive/Epoxy: Service Temperature -40°C to +150°C

Component Specifications

Definition

A two-component thermosetting polymer adhesive system specifically formulated for permanent bonding of magnet arrays in electromechanical assemblies. It cures to form a rigid, durable bond that maintains dimensional stability under thermal cycling and mechanical stress, ensuring precise alignment and secure attachment of magnetic components.

Working Principle

Works through chemical cross-linking polymerization when resin and hardener are mixed, creating covalent bonds that form a rigid three-dimensional network. The adhesive fills microscopic gaps between magnet surfaces and substrates, creating mechanical interlock and chemical adhesion through surface wetting and covalent bonding to substrate materials.

Materials

Epoxy resin (typically bisphenol-A or bisphenol-F based) with amine or anhydride hardener, containing magnetic particle fillers (iron oxide or ferrite) for thermal conductivity and structural reinforcement. May include silica thixotropic agents for viscosity control and adhesion promoters for enhanced bonding to metallic and ceramic surfaces.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Pot Life	30-60 minutes
Cure Time	4-8 hours @ 25°C (full cure)
Viscosity	5000-15000 cP @ 25°C
Shear Strength	≥20 MPa
Shore D Hardness	85-90
Dielectric Strength	≥15 kV/mm
Service Temperature	-40°C to +150°C
Thermal Conductivity	0.8-1.2 W/m·K

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 4587, ISO 11339, DIN EN 1465, ASTM D1002

Parent Products

This component is used in the following industrial products

Magnet Array

A precisely arranged assembly of permanent magnets designed to generate controlled magnetic fields for motion applications.

View Product Details

Engineering Analysis

Risks & Mitigation

Incomplete mixing leading to weak bonds
Moisture contamination reducing adhesion strength
Thermal expansion mismatch causing stress fractures
Outgassing during cure creating voids
Shelf life expiration reducing performance

FMEA Triads

Trigger: Incorrect resin-to-hardener ratio
Failure: Incomplete polymerization resulting in weak, rubbery bond with poor mechanical properties
Mitigation: Implement automated mixing systems with ratio verification, use pre-measured dual-cartridge packaging, conduct regular viscosity testing

Trigger: Surface contamination (oils, oxides, release agents)
Failure: Adhesive de-bonding or reduced bond strength leading to magnet array detachment under operational loads
Mitigation: Implement strict surface preparation protocols including solvent cleaning, abrasion, and plasma treatment; conduct surface energy testing before bonding

Trigger: Thermal cycling beyond adhesive specifications
Failure: Progressive bond degradation leading to crack propagation and eventual mechanical failure
Mitigation: Select adhesives with CTE matching magnet and substrate materials, implement thermal stress analysis in design phase, use flexible epoxy formulations for high-cycling applications

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Bond line thickness tolerance: ±0.05 mm; Alignment tolerance: ±0.1° angular, ±0.2 mm positional

Test Method

Shear strength testing per ISO 4587, thermal cycling per IEC 60068-2-14, vibration testing per MIL-STD-810G, pull-off adhesion testing per ASTM D4541

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Adhesive/Epoxy

Manufacturer profiles associated with Adhesive/Epoxy.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the maximum gap filling capability of magnet array epoxy adhesives?

Typically 0.1-0.5 mm depending on formulation. Thixotropic versions can bridge larger gaps while maintaining dimensional stability during cure.

How does temperature affect the curing process of magnet epoxy adhesives?

Cure time decreases exponentially with temperature increase. At 60°C, full cure can be achieved in 1-2 hours versus 4-8 hours at room temperature. However, rapid curing at high temperatures may induce thermal stresses.

Can magnet array epoxy adhesives be removed or reworked after curing?

Fully cured epoxy forms permanent bonds. Removal typically requires mechanical methods (grinding, machining) or thermal decomposition above 250°C, which may damage magnet materials.

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.

Adhesive/Epoxy