Ultem injection molding ultem plastic molding resin. High performance plastics materials guide tactical sealing. The mechanisms of environmental stress cracking pro posed in the literature will be. Glass filled grades appear tan or greenish in color. Resists stress cracking ultem s applications due to ultem s high mechanical strength and heat resistant composition, it is ideal for use in harsh environmental conditions needing chemical resistant features and high temperature resistance. Our extrusion process optimized for high performance polymer processing along with our proprietary annealing techniques result in very high quality porosity and stress free material. Ultem exhibits inherent flame resistance and is extremely difficult to ignite. Quantum polymers maintains a large inventory of ultem extruded rods and plates. Additional data on this approach for polyetherimide pei and. The mechanisms of environmental stress cracking proposed in the literature will be. Ultem pei stock shapes are inherently flame resistant with low smoke emission.
The standard color of ultem unfilled stock shapes is light amber. Ultem stock shapes display property retention and resistance to environmental stress cracking when exposed to a wide variety of chemicals. It is prone to stress cracking in chlorinated solvents. Performance plastics not only uses ultems transparent grades, but also. Ultem resin is an amorphous, transparent polyetherimide pei plastic offering a glass. Environmental stress cracking is a failure mechanism very similar to slow crack growth in terms of shape. Solvent stress cracking studies have been carried out in o. Ultem stock shapes are inherently flame resistant with low smoke emission. Ultem it is resistant to uv and gamma radiation, performs especially well in hot air and water environments, retains 85% of its tensile strength after 10,000 hours of immersion in boiling water and 100% of its tensile strength after 2,000 cycles in a steam autoclave at 270. Environmental stress cracking esc is a common phenomenon that affects commercially available polymeric materials exposed to liquid agents under external loading, and it is one of the most common.