Properties of elastomers can be measured and computed by the DMYO-V oscillograph.Read more
When elastomers are being used in a manufacturing process, it is important to verify their physical properties by performing testing
at all stages of production. When researching and developing new elastomers, such as those used in tires, extensive testing is required to verify and validate each elastomeric compound. Research and development facilities for elastomeric materials will sometimes go through hundreds or thousands of specimens before moving on toward production. During production, testing is typically performed for quality control purposes
Products produced by anionic polymerization of nonpolar monomers, such as polybutadienes (BR), polyisoprenes (IR), solution styrene butadiene rubbers (SSBR) and styrenic block copolymers (SBC), already dominate important positions in industries. Examples include thermoplastic elastomers, adhesives, impact modifiers, lubricant modifiers, vulcanized compounds, asphalt modification and others. SBCs combine the properties of a thermoplastic resin, polystyrene and those of an elastomer, polybutadiene, polyisoprene or poly(ethylene-co-butylene). SBCs derive their useful properties from their ability to form distinct styrene (hard phase) and diene (rubber phase) domainsRead more
Research on the mechanism of tire wear and its rubber test methods has been carried out for more than a century, ever since the advent of pneumatic tires, and there are still numerous new reports being published even now. ISO 23794:2015 standardizes the general outline of 14 types of rubber wear test methods, such as the Akron wear test, the Lambourn wear test and the DIN wear test. The Akron wear test and Lambourn wear test, which introduce slippage between the pavement surface and the rubber sample, are suitable for evaluating tire tread wear resistance. Historically, Lambourn was the first to propose a laboratory wear tester that correlated with tire wear test resultsRead more
Vision Engineering announces the launch of Makrolite 4K at APEX 2022, the first 4K resolution microscope to complement their range of digital inspection systemsRead more
Endurica LLC announces a new feature in its Endurica CL fatigue solver: automatic block cycle generation. The feature enables users to extract a simplified durability testing schedule (known as a block cycle test) from multi-channel road loads recorded at the testing track. The simplified testing schedule preserves the most essential features of the original road load history, while maintaining the original failure mode and discarding non-critical load history. The capability enables rubber part suppliers to design fatigue tests that execute quickly and that develop realistic damage. It enables car makers to ensure durability under actual driving conditions.Read more
Smithers announces the addition of an Instron 5985 universal testing system to its materials physical testing laboratory in Akron, OH.
The machine offers expanded testing capabilities and parameters for tensile, compression, bend, peel, shear, tear and cyclic tests. Its high-force load frame has a load capacity up to 250 kN and vertical test space of 1,430 millimeters (56.3 inches).
While traditional testing is critical in determining polymerization factors, from simple moisture content to complete chemical analysis, it is time consuming, labor intensive, and has substantial ongoing costs in terms of the purchase and disposal of consumables such as reagents and chemicals. Conventionally, it requires sample preparation, and can take five to 15 minutes for moisture testing, and 24 to 48 hours for more complex chemical testing. Fortunately, an approach using near infrared (NIR) spectroscopy can now provide immediate, real time laboratory quality readings via a non-contact, secondary measurement method that can deliver moisture, composition analysis and even full spectrum readings for a fraction of the running cost of conventional methods.Read more
Global test standards published by organizations such as ASTM International or ISO include methods to characterize the fundamental properties of materials, as well as more application specific properties. ASTM D412, one of the more elementary elastomer tests, is a widely used test standard for determining the tensile properties of all thermosetting and thermoplastic elastomers, no matter their intended use. ASTM D412 measures two of the three fundamental properties mentioned above: tensile strength and elongation at break.Read more
Product formulation knowledge has, by convention, typically remained an expertise held by a small
number of highly experienced individuals within organizations. These individuals are often chemists
who have amassed an impressive amount of both physical knowledge (countless datasets) and
intrinsic experience (under-documented subject matter “know-how” and insight) through long
careers spent studying relevant scientific principles and conducting physical experiments.