Testing service for silicone epoxy laminated materials

Testing Service for Silicone Epoxy Laminated Materials for Global Electrical and Structural Compliance

As an ISO/IEC 17025 accredited laboratory, we deliver a specialized testing service for silicone epoxy laminated materials that verifies the mechanical strength, electrical insulation performance, thermal stability, flame retardancy, and long-term durability of laminates combining silicone and epoxy resin systems. Our testing service for silicone epoxy laminated materials supports manufacturers and exporters of rigid laminates, composite sheets, and insulating boards who must demonstrate conformity to ASTM D638, ASTM D790, ASTM D149, IEC 60243, IEC 60093, NEMA LI 1, and regional electrical and structural standards across the European Union, North America, East Asia, and the Middle East. Every test is performed under our CNAS-accredited quality system, producing reports accepted by notified bodies, electrical equipment OEMs, and procurement teams worldwide.

Product Samples We Regularly Test in Our Testing Service for Silicone Epoxy Laminated Materials

Silicone epoxy laminated sheets and boards — for high-temperature electrical insulation, motor slot wedges, and transformer spacers
Glass cloth reinforced silicone epoxy laminates — for switchgear panels, busbar supports, and arc barriers requiring high mechanical strength and flame retardancy
Paper and fabric reinforced silicone epoxy composites — for low-cost insulating components and structural spacers in electrical equipment
Multi-layer silicone epoxy laminates with copper cladding — for high-frequency circuit boards and thermally conductive substrates
Custom-machined and fabricated silicone epoxy laminate components — with precision cutouts, holes, and edge profiles for OEM assembly
Flame-retardant and low-smoke silicone epoxy laminated products — for railway, marine, and public building applications requiring strict fire safety compliance

Mechanical and Physical Property Testing for Silicone Epoxy Laminated Materials

Tensile strength and elongation at break per ASTM D638 and ISO 527-2 — specimens are machined from the laminate and pulled to failure to measure the ultimate tensile strength and stretch, ensuring the material withstands mechanical loads in structural and insulating applications.
Flexural strength and flexural modulus per ASTM D790 and ISO 178 — three-point or four-point bending tests determine the stiffness and bending resistance of the silicone epoxy laminate, verifying it can support loads and resist deformation in panel and support applications.
Compressive strength per ASTM D695 and ISO 604 — the laminate is compressed to failure to verify its load-bearing capacity when used as spacers, mounting plates, and structural insulators.
Impact resistance by Izod and Charpy methods per ASTM D256 and ISO 179-1 — the energy absorbed during fracture is measured to ensure the silicone epoxy laminated material withstands accidental impacts during installation and service.
Hardness by Rockwell and Barcol methods per ASTM D785 and ASTM D2583 — the surface hardness is measured to verify the specified grade and to confirm resistance to indentation and scratching in high-wear applications.
Density and specific gravity per ASTM D792 and ISO 1183 — the mass per unit volume is determined to verify batch consistency and to support material qualification.
Dimensional stability and shrinkage after thermal aging per ASTM D1204 — the laminate is exposed to elevated temperatures and the percentage linear change is recorded to ensure the material remains dimensionally stable in high-temperature service.

Electrical Insulation and Dielectric Testing for Silicone Epoxy Laminated Materials

Dielectric breakdown voltage and dielectric strength per ASTM D149 and IEC 60243-1 — the voltage at which electrical failure occurs through the laminate is measured to verify the insulation capability for high-voltage and high-frequency electrical equipment.
Volume and surface resistivity per ASTM D257 and IEC 60093 — the electrical resistance through and across the silicone epoxy laminate is measured under controlled humidity to confirm the material meets the insulation requirements for the intended voltage class.
Dielectric constant and dissipation factor per ASTM D150 and IEC 60250 — the relative permittivity and loss tangent are determined at specified frequencies to qualify the laminate for high-frequency and signal integrity applications in circuit boards and antenna substrates.
Comparative tracking index per IEC 60112 — the resistance of the laminate surface to tracking under voltage and contamination is evaluated to ensure safe operation in creepage-critical electrical installations.
Arc resistance per ASTM D495 — the ability of the silicone epoxy laminated material to resist forming a conductive path under a high-voltage, low-current arc is measured for switchgear and high-voltage component insulation.
Insulation resistance after thermal and humidity conditioning per internal protocols — the laminate is exposed to damp heat and thermal cycling, and the insulation resistance is remeasured to ensure the dielectric properties are retained under environmental stress.

Thermal and Fire Performance Testing for Silicone Epoxy Laminated Materials

Thermogravimetric analysis and differential scanning calorimetry per ASTM E1131 and ISO 11357-3 — the thermal decomposition profile, glass transition temperature, and any exothermic events are measured to define the maximum continuous service temperature and the thermal stability of the silicone epoxy laminate.
Heat deflection temperature and Vicat softening point per ASTM D648 and ISO 306 — the temperature at which the laminate deflects or softens under a defined load is measured to determine the practical upper use temperature for structural applications.
Long-term thermal aging per ASTM D3045 and IEC 60216 — the laminate is aged at elevated temperatures and the retained dielectric strength and mechanical properties are measured to assign the thermal class and to predict the service life at the rated temperature.
Flame retardancy and limited flame spread per UL 94 and ISO 15025 — the silicone epoxy laminated material is exposed to a defined flame and the afterflame time, afterglow, and burning rate are recorded to classify the material as V-0, V-1, V-2, or HB for electrical enclosure and building product applications.
Limiting oxygen index per ISO 4589-2 — the minimum oxygen concentration supporting combustion is measured to rank the intrinsic fire resistance of the silicone epoxy laminate and to verify the effectiveness of flame-retardant additives.
Smoke density and toxic gas emission per ISO 5659-2 — for laminates used in enclosed spaces and transportation, the specific optical density of smoke and the concentration of toxic combustion gases are measured to meet life safety regulations.
Glow-wire ignitability per IEC 60695-2-11 — the laminate surface is subjected to a glow-wire to simulate contact with an overheated electrical component, verifying it does not ignite or self-sustain combustion.

Chemical Resistance and Environmental Durability Testing for Silicone Epoxy Laminated Materials

Resistance to acids, alkalis, and organic solvents per ASTM D543 and ISO 175 — the silicone epoxy laminate is immersed in representative chemicals and the change in mass, dimensions, and mechanical properties is recorded to verify compatibility with the intended service environment.
Water absorption and moisture resistance per ASTM D570 — the laminate is immersed in water and the mass gain is measured to predict performance in wet and humid applications, and to verify the material resists moisture uptake that would degrade its electrical insulation properties.
Damp heat and condensation resistance per IEC 60068-2-78 — the laminate is exposed to high temperature and high relative humidity, followed by electrical and mechanical retests to confirm no moisture-induced degradation.
Neutral salt spray and corrosion testing per ISO 9227 — for laminates with metal cladding or used in marine environments, the corrosion resistance of the material and any embedded components is evaluated.
UV and xenon-arc accelerated weathering per ASTM G155 and ISO 4892-2 — for laminates used in exposed or outdoor installations, the surface is tested for color fading, chalking, and loss of mechanical strength after prolonged sunlight exposure.
Low-temperature flexibility and cold crack resistance per ASTM D2137 — the laminate is conditioned at sub-zero temperatures and flexed to verify it remains ductile and does not crack in cold climates.
Resistance to transformer oils, coolants, and cleaning agents per ASTM D471 — the silicone epoxy laminated material is exposed to common electrical fluids and cleaning chemicals to verify no swelling, softening, or degradation occurs during maintenance and service.

Report Recognition and ISO/IEC 17025 Compliance

Every test method described in this testing service for silicone epoxy laminated materials is covered by our ISO/IEC 17025 scope of accreditation. Our technical reports and certificates of analysis are accepted by European notified bodies for electrical components, by North American electrical equipment OEMs referencing ASTM and NEMA standards, and by customs and procurement authorities across Japan, Korea, and the Gulf region. Whether you require a complete qualification dossier for a new silicone epoxy laminate product, a batch release inspection for an export shipment, or a root cause failure analysis of an insulation or structural failure, our laboratory provides the measurement accuracy and advanced composite expertise that the global electrical and electronics industries demand.