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Plastic Materials & Plastic Products

Determine the Laboratory of Scratch Testing

Scratch testing laboratory is a critical quality control procedure that simulates the stress that a coating faces in normal use in a laboratory setting. A diamond indenter with a rounded tip (Rockwell) is pushed across the sample at a steady pace in a typical experiment. The ensuing scratch on the surface provides insight into how the coating will perform in the real world.

A stylus with a set shape is drawn across a specimen surface at a known speed and with a known force for laboratory scratch and mar testing. Most scratch and mar resistance investigations aim to identify how a material behaves under specified test conditions, establish a relative ranking of related materials, or define a surface coatings failure limit.

Scratch testers with adjustable speeds must be used with caution to ensure that the rate of speed is consistent during each test. Another factor to consider is how long a stylus sits on a specimen surface before the test begins, as well as how deep the stylus "sinks" in. The severity of scratch damage is also influenced by material qualities such as surface roughness, hardness, modulus of elasticity, texture, grain, gloss level, and coating thickness.

In Maeon Lab, A scratch is created when the material yields under an indentation force and a sliding or lateral force, resulting in ductile and/or brittle failure. In a scratch, the uneven surface results in non-uniform light scattering and "scratch whitening. Scratch testing laboratory looks to be a simple notion, but evaluating and describing the outcomes on a polymeric material is not always straightforward. Many polymers have visco-elastic characteristics, which means that during loading, the tensions in the material may release. Furthermore, if applied forces are removed, plastics show an elastic rebound.

The test method is frequently used to determine a materials physical qualities. The test method is mostly used to determine the quality of paint and plating, as well as polymers, coated surfaces, ceramics, and metals. The optical analysis of the scratch, however, remains the most essential information received from the scratch test: while observation under an optical microscope, the user establishes critical loads. The critical loads are used to compare the coating or bulk materials adherence (or cohesion). Additionally, an automated Panorama image of the full scratch track can be recorded and kept among other scratch signals.