However, during the initial high temperature testing of rubber
compounds for static FEA, we discovered the trend of stress change was somehow contradictory to these results.
For example, thermoplastic molders are just discovering the potential of a new type of hydrogenated nitrile butadiene rubber
(HNBR) commercialized by Lanxess in 2005.
1 sharpened pencil * 2 size-33 rubber
bands * 6 metal washers (quarter-size) * 2 cotton swabs * cardboard (28 cm by 38 cm, or 11 in.
Montreal-based FieldTurf is the selfproclaimed industry leader in sand and rubber
If they are presented with facts, and they believe they will get some benefit from using rubber
, they'll do it.
Engineers have experimented with ground rubber
in roadways for decades, but new laws are pushing transportation agencies to expand the use of this material, says Michael A.
His problem was not so much one of removing a rubber
mold from the clay (because the clay would normally be destroyed when the mold was removed) but, rather, how could a rubber
mold stiff enough to reproduce the original be fabricated without sagging and distorting.
The RPA molds the uncured rubber
formulation in a sealed pressurized cavity and has a special direct drive motor that oscillates the lower die sinusoidally over a range of preprogrammed strains, frequencies and temperatures.
Make the holes big enough for a rubber
band to fit through.
Twin Cities Rubber
Group, technical meeting, Holiday Inn, Bloomington, MN, Mark Douglas (763) 559-3500 or mdouglas@promedmolding.
Also, the piston type imparts much less shearing energy to the rubber
sample before rheological measurements are made.