Apex Company's Medalist MD-447 is a
transparent medical elastomer gel available in free-flowing pellets for comfort
in skin-contact and other sensitive applications requiring molded-in seal areas
MD-447 is ultra-soft and could not be measured accurately on the Shore A
hardness scale used for other elastomers, the softest of which has a Shore A
rating of 5. Subjected to the Shore OO test for ultra-soft materials, the new
compound has a rating of 25. Based on a standard hydrogenated styrenic block
copolymer, Medalist MD-447 is free of latex, phthalates or animal-derived
components, and complies with FDA, CaliforniaProposition 65, CONEG and REACH
requirements for medical applications.
It would be very interesting/educational to find a comparison between this elastomer gel and silicone rubber.
Aside from the fact that the elastomer gel is thermoplastic (can be melted and reformed) and silicone is a thermoset material (molded once and your done), I wonder how the gel holds up in other mechanical properties in comparison to silicone rubber.
Researchers at the University of Maryland have achieved a first in lithium-ion battery science: the development of a successful lithium-based battery using one material for all three core components of a battery -- anode, cathode, and electrolyte.
The online Bar Steel Fatigue Database for automotive design engineers has been updated for the fifth time and now contains 134 iterations, or grade/process combinations. It provides better predictability for designing parts with long-term reliability and durability.
FPGAs use programmable fabric to create custom logic, but this flexibility comes at a cost -- usually around 10 times more silicon real estate and 10 times the power dissipation. Can we really claim any FPGA is low power?
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