The Universal Selection Source: Plastics & Elastomers
A SpecialChem Client requires a technology that delivers an instant optical blurring effects on the skin, i.e. immediately reduces the appearance of fine lines, pores and blemishes...
A SpecialChem Client is seeking a thin film polymer barrier to spray coat into metal beverage and food cans at high speed. This polymer barrier must be resistant to mechanical bend...
A SpecialChem Client requires a technology to optimize the performance of UV filters from its formulation. Technologies that could enhance usual UV filters are also of interest.
This technology allows selective separation of metals from solid or liquid mixtures. Given the nature of this technology, it can be tailored to separate specific elements. Industri...
Food Packaging: Latest Barrier Solutions
Apr 2, 2015
More info and registration
Sensoriality / Sensorial Experience for Renewed Claims
Apr 7, 2015
Solving Adhesion Issues of Coatings & Inks
Apr 8, 2015
Creativity with Plastics
Green and bio-plastics
High Heat Materials
Hardness qualifies the resistance to permanent indentation of a material. Rockwell M hardness is a standardized test which consists in measuring the depth of penetration of a polished steel ball pressed at the surface of a plastic under controlled conditions. The higher the value, the harder the material. Rockwell Hardness measures are dimensionless.
Rockwell Hardness test is generally used for hard materials, like PA, PC, PS or POM, where the resilience or creep of the polymer is less likely to affect results. Different Rockwell Hardness scales utilize different size of steel balls and different loads. The three most common scales used for plastics are Rockwell E, Rockwell M, and Rockwell R.
Test methods used to measure Rockwell Hardness M are ASTM D785 and ISO 2039-2.
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