Services / Rubber Testing

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Microlab deploys the State-of-Art Rubber Testing Equipments

Rubber is known for its toughness, elasticity, and durability. However, Rubber testing is essential across automotive, industrial, consumer, and construction applications. Rubber is used in products that require withstanding deformation and stay in its original form. Microlab gives you proper analysis and testing capabilities to prevent catastrophic failure within heavy-duty manufacturing applications.

Mechanical

Tensile, Elongation, and Modulus

Mechanical properties like tensile strength and elongation are essential to design requirements for choosing the type of rubber. The tensile test is carried out as per ASTM D412 and IS 3400-1

Accelerated Heat Ageing

Rubber materials are used across industries and subjected to different temperatures. In accelerated heat aging, we soak the material at a specific temperature, after which we again evaluate the mechanical properties.

The test method follows ASTM D 573 and IS 3400-4

Hardness

Shore Hardness (Durometer) testing is done at our facility as per ASTM D2240 and IS 3400-2

Abrasion

The rubbing away of material due to friction is a measure of abrasion. We perform Taber abrasion resistance as well as Rotary abrasion resistance. The test method follows IS-3400-3.

Tear Resistance

Tear strength is the resistance of the crack to propagate within the sample. We perform Tear strength as per the standard on Crescent and Angular Specimens as per IS 3400-12 and IS 3400-17.

Physical

Compression Set

The compression set is the amount of permanent deformation that occurs when the rubber is compressed to a specific deformation, specific time, and temperature.

The test method follows ASTM D395 and IS 3400-10

Specific Gravity

The density/specific gravity is tested as per ASTM D792 and IS 3400-9

Ash Content

The ash content is measured by subjecting the samples to a muffle furnace at a high temperature and weight loss is calculated to find the ash content.

Different types of rubber can be analyzed including those containing flame retardants.

The test method follows ASTM D5630 and IS 3400-22

Chemical Properties

Polymer Identification

The type of rubber can be identified using FTIR. The analysis can also be done to get an idea about the co-polymer present. Each rubber compound has a unique IR spectrum which can be used to determine the type of polymer

The test method follows ASTM D395 and IS 3400-10

Complete Polymer Profile

The complete history of the monomer and the filler content can be determined using different methods that include DSC and TGA. The amount of filler content, type, and crystallization data are obtained.

RoHS in rubber

Hazardous elements in rubber can be tested by a variety of test methods present at our facility

Different elements like Lead, Cadmium, Mercury, Chromium, PBB, and PBDE can be evaluated using GC-MS, ED-XRF, and ICP-OES up to very small levels of concentrations.

Resistance to Oil and Fuel

Rubbers are used as gasket material and come in direct contact with fluids like oil and fuel. To prevent the deterioration of these with time, the resistance of the rubber has to be checked. The test method used at our facility is in line with ASTM D471 and IS 3400-6

Thermal Property

Heat Distortion Temperature (HDT)

HDT is a relative measure of a material’s ability to perform for a short time at an elevated temperature while supporting a load.

It indicates at what temperature materials start to “soften” when exposed to a fixed load at elevated temperatures.

ATSM D 648-07: Standard test method for Deflection Temperature of plastics under flexural load.

Thermo- Gravimetric Analysis (TGA)

TGA is useful to provide the profile of the paint that is used, the fillers, and other constituents that make up the final coat. TGA is extremely useful when trying to diagnose the reason for a coating failure. Other applications include reverse engineering, complete polymer profile, and filler content concentration.

Differential Scanning Calorimetry (DSC)

This technique is used to measure the energy changes in the paint (entropy) as a response to the temperature. This is very helpful in finding the glass transition temperature of coatings (Tg) which will then determine if the coating can be used in different environments. The curing property of paint can also be found, and other applications include determining the molding temperature for plastics, and the crystallinity of plastics. It is important to have the temperature at sub-zero temperatures as some polymers have their Tg values in this range. At Microlab, the temperature range is between -120oC to 720oC

Thermal Conductivity

Thermal conductivity is an important property when trying to design materials as insulators and in heat exchanger applications. At Microlab we can also test the thermal conductivity at different temperatures (from -50°C to 2000°C), on liquids, powders, and solids. The application can be extended to Batteries, Fluids, Building Materials, Explosives, and Lighting. Our facility is equipped with 2 types of equipment: the steady-state measurement can give precise values while the MTPS (Modified Transient Plane Source) instrument can provide values within seconds.

The standard test method for analysis follows ASTM C518, ASTM D7984, and ISO 8301