Heating temperature experiment

Heating Temperature Experiment – Accredited Thermal Exposure and Heat Resistance Evaluation for Global Markets

Our internationally accredited laboratory delivers a comprehensive heating temperature experiment service that enables manufacturers of polymers, coatings, electronic components, automotive parts, textiles and industrial materials worldwide to quantify the effects of controlled elevated temperature exposure on the physical, mechanical, optical and electrical properties of their products. Every test is conducted within the rigorous framework of ISO/IEC 17025, and each report bearing the ILAC mark is unconditionally accepted by regulatory authorities, notified bodies and supply‑chain partners in all major economies. The heating temperature experiment subjects specimens to precisely controlled temperatures in forced‑air ovens, inert‑atmosphere chambers or fluidised sand baths for durations ranging from a few hours to many thousands of hours, simulating the cumulative thermal stress that materials and components experience during manufacturing, storage, transport and service. By measuring the change in tensile strength, elongation, hardness, colour, gloss, dielectric strength, mass loss and functional performance before and after the thermal exposure, we provide our global clients with the legally robust, defensible data that underpin material selection, warranty validation and compliance with the relevant ISO, ASTM, IEC, EN and customer‑specified standards.

Product Samples We Regularly Subject to Heating Temperature Experiments

Our programmable ovens and environmental chambers accommodate a vast range of materials, components and finished products. The following categories represent the items most frequently evaluated through our heating temperature experiment programme:

Polymers, plastics and elastomers – injection‑moulded parts, extruded profiles, films, sheets, O‑rings, gaskets, seals, hoses, cable jackets and conveyor belts
Coatings, paints and surface finishes – automotive basecoats and clearcoats, architectural coil‑coating finishes, powder coatings, marine paints and industrial protective coatings
Electronic and electrical components – printed circuit boards, integrated circuits, passive components, connectors, relays, insulating tapes and complete control units
Automotive and under‑bonnet components – engine control units, turbo actuators, exhaust sensors, ignition coils, hose assemblies, fluid reservoirs and plastic intake manifolds
Metallic materials and surface‑treated parts – anodised aluminium, conversion‑coated steel, electroplated components, heat‑treated alloys and brazed or soldered joints
Textiles, nonwovens and protective clothing – aramid fabrics, fire‑resistant clothing, outdoor upholstery, geotextiles and high‑temperature filtration media
Adhesives, sealants and bonding systems – structural epoxy and polyurethane bonds, silicone sealants, pressure‑sensitive tapes and laminated joints
Composite materials and laminates – carbon‑fibre‑reinforced polymers, glass‑fibre‑reinforced plastics, sandwich panels and multi‑layer packaging films

Thermal Ageing of Plastics, Elastomers and Polymeric Materials – Heating Temperature Experiment According to ISO 188 and ASTM D573

Accelerated thermal ageing in forced‑air ovens according to ISO 188 (Rubber, vulcanized or thermoplastic – Accelerated ageing and heat resistance tests) and ASTM D573: dumbbell or slab specimens are suspended in a forced‑circulation oven at temperatures typically ranging from +70 °C to +200 °C for 7, 14, 28 or 90 days. The tensile strength, elongation at break, hardness (Shore A or IRHD), and compression set are measured before and after ageing, and the percentage retention of each property is reported. This heating temperature experiment is the primary quality‑control tool for rubber goods, seals and hose compounds, and it forms the basis for the Arrhenius extrapolation of service life at lower temperatures.
Long‑term thermal endurance of plastics according to ISO 2578 and the relative thermal index (RTI) method of UL 746B: a series of properties – tensile, flexural, impact, dielectric – is monitored over extended ageing at three or more temperatures. The time to reach a defined endpoint (e.g., 50 % retention of the original property) is determined, and the RTI or the temperature index is reported. The data are used to classify materials for continuous service in electrical and mechanical applications.
Heat‑deflection temperature and Vicat softening point after thermal ageing: the HDT and Vicat temperatures are measured on aged and unaged specimens, and the shift in the softening point indicates the progression of cross‑linking, chain scission or plasticiser loss during the high‑temperature exposure.
Colour change, yellowness index and gloss retention after heating: the CIELAB colour coordinates and the specular gloss are measured before and after the heating temperature experiment. The total colour difference ΔE* and the percentage gloss retention are reported, quantifying the resistance of the material to thermal yellowing and surface degradation.

Electronic and Electrical Assemblies – Heating Temperature Experiment According to IEC 60068‑2‑2 and JEDEC Standards

Dry heat endurance test according to IEC 60068‑2‑2 (Test Bb/Bd): the component or assembly is placed in a chamber maintained at a constant elevated temperature – typically +85 °C, +125 °C or +150 °C – for a prescribed duration of 100 h, 500 h or 1 000 h. Functional parameters such as output voltage, frequency stability, insulation resistance and leakage current are monitored throughout. This heating temperature experiment verifies that the device will not suffer from thermal runaway, solder‑joint embrittlement or parametric drift during its operational life.
High‑temperature storage life (HTSL) according to JEDEC JESD22‑A103: semiconductor devices are stored at an elevated temperature, often +150 °C, for up to 1 000 hours without bias. After exposure, wire‑bond pull strength, die‑shear strength and electrical performance are evaluated. The test detects intermetallic‑compound growth, bond‑pad corrosion and package‑material degradation.
Biased high‑temperature ageing for power modules and integrated circuits: the device is subjected to the maximum rated voltage and current while held at its upper operating temperature. The drift in threshold voltage, gain and on‑resistance is measured, and the time to parametric failure is recorded, providing data for the Arrhenius‑based lifetime prediction of mission‑critical electronics.
Thermal‑cycling and heat‑soak testing of soldered joints and connectors: the assembly is exposed to a sequence of elevated temperature dwells and room‑temperature cooling, and the resistance of the solder joints and the contact retention force are measured before and after the heating temperature experiment. The data support the qualification of the assembly process for automotive and aerospace electronics.

Automotive Components and Under‑Bonnet Materials – Heating Temperature Experiment According to ISO 16750‑4 and OEM Specifications

Thermal load testing of engine‑mounted and chassis‑mounted components according to ISO 16750‑4: the component is exposed to a temperature profile that replicates the vehicle's thermal environment – up to +150 °C for engine‑compartment parts, +120 °C for chassis electronics and +85 °C for passenger‑compartment modules. The ageing is combined with humidity and vibration where required, and the functional performance and the mechanical integrity are verified at the end of the test.
Heat‑soak and thermal‑cycle ageing of fuel‑system and air‑intake elastomers: the specimen is aged in contact with fuel, oil or coolant at +125 °C to +150 °C, and the change in volume, hardness and tensile properties is measured. This heating temperature experiment ensures that the hose or seal will resist the combined chemical and thermal attack that occurs in a modern engine.
High‑temperature ageing of automotive lubricants and coolants: the fluid is aged in the presence of metal catalyst coupons at +160 °C to +180 °C, and the increase in total acid number, viscosity and the formation of sludge and deposits are measured. The test predicts the oil‑drain interval and the coolant‑change interval for the vehicle fleet.

Coatings, Paints and Surface Finishes – Heating Temperature Experiment for Thermal Stability and Colour Retention

Thermal stability of powder coatings and liquid paints according to ISO 3248 and ASTM D3451: coated panels are exposed to a defined elevated temperature for a specified period, and the colour change, gloss loss, adhesion and flexibility are evaluated. The heating temperature experiment determines the maximum service temperature at which the coating can maintain its protective and decorative properties, directly supporting the specification of coatings for engine components, exhaust systems and industrial ovens.
Heat resistance of anti‑corrosion primers and protective coatings: the coated specimen is heated to the maximum rated temperature, and the barrier properties, the under‑film corrosion at a scribed line and the cathodic disbondment resistance are measured before and after the thermal exposure. The data are used to certify the coating for the protection of steel structures in high‑temperature environments such as refinery vessels, steam pipes and boiler casings.
Measurement of the thermal degradation temperature and the onset of decomposition by thermogravimetric analysis (TGA) according to ISO 11358: a small sample of the coating or the polymer is heated at a controlled rate, and the mass loss is recorded. The temperature of the onset of the decomposition and the temperature of the maximum rate of the mass loss are reported, providing the fundamental thermal‑stability data that supplement the oven‑ageing experiments.

Textiles, Fibres and Nonwovens – Heating Temperature Experiment for Thermal Shrinkage and Strength Retention

Determination of the thermal shrinkage of synthetic fibres and yarns according to ASTM D4974 and ISO 17554: a measured length of the fibre or the yarn is exposed to a dry‑heat environment at a specified temperature, and the percentage change in length is reported. The test predicts the dimensional stability of the textile during the heat‑setting, the laundering and the ironing processes.
Tensile strength and elongation retention of technical textiles after thermal ageing: the fabric is exposed in a circulating‑air oven at temperatures up to +250 °C for a defined duration, and the residual tensile strength and the elongation are measured. This heating temperature experiment qualifies the fabric for use in hot‑gas filtration, protective clothing for foundry workers and insulation jacketing for industrial pipes.
Colour fastness to heat and to hot pressing according to ISO 105‑X11 and AATCC TM133: the fabric is subjected to a dry‑heat or a hot‑pressing treatment, and the change in colour and the staining of the adjacent multifibre fabric are assessed against the grey scale, providing the data that the textile dyer and the garment manufacturer need to guarantee the colour stability of the finished product.

Report Acceptance and Global Regulatory Compliance

All measurements performed within our heating temperature experiment service are executed under the fully accredited scope of our ISO/IEC 17025 quality management system. Each test report that carries the ILAC mark is therefore automatically recognised by regulatory authorities, notified bodies, customs offices and supply‑chain partners in all major economies. For polymer producers, coating manufacturers, electronic‑component suppliers, automotive‑system integrators and textile converters anywhere in the world, the report constitutes legally robust, internationally accepted evidence that the thermal resistance, the property retention and the long‑term stability of the material or the product have been determined in accordance with the applicable ISO, ASTM, IEC, EN and customer‑specified methods. The documentation can be directly used to support CE marking, the issue of inspection certificates according to EN 10204 or equivalent national standards, the compilation of technical files for type‑examination, and the resolution of commercial and technical disputes concerning the thermal performance and the durability of any product exposed to elevated temperatures.