Thermal performance data molding

Thermal stability as measured by these ramped TGA experiments of the sort previously described are not the definitive test of a polymer s utility at elevated temperature. Rather, for a polymer to be useful at elevated temperatures, it must exhibit some significant retention of useful mechanical properties over a predetermined lifetime at the maximum temperature that will be encountered in its final end use application. While many of the bisbenzocyclobutene polymers have been reported in the literature, only a few have been studied in detail with regards to their thermal and mechanical performance at both room and elevated temperatures. Tables 7-10 show some of the preliminary mechanical data as well as some other physical properties of molded samples of polymers derived from amide monomer 32, ester monomer 40, diketone monomer 14 and polysiloxane monomer 13. The use of the term polyamide, ester etc. with these materials is not meant to imply that they are to be regarded as merely modified linear thermoplastics. Rather, these polymers are for the most part highly crosslinked thermosets. 

The Brabender Plasticorder will provide meaningful data for a specific compound s flow life or duration when exposed to the thermal condition previously described. It measures the viscosity and gel time, and results can be correlated to the performance of a componnd dnring molding operations. The instrument supplier is... 

Once a geometric model of data base is created it may be shared for many of the product development steps described earlier. The data base may be copied and scaled for shrink factors to enable a mold designer to do preliminary mold design, or an engineer can use the same data base to perform structural analysis. Numerical control tool paths may be developed concurrently with the final mold design. Such modeling tools as finite element analysis, mold fill, and mold thermal... 

Thermal Air Aging 204 4.2 9 Data from LNP study 210°C continuous - use temperature (UL 746) based on tensile strength 99 Torlon 4203 Amoco Performance Products Specimen Molded samples... 

To find the material-dependent absorption constant Keff, temperature-measurements have been made to align the simulation results with the experimental data. To do that, injection molded American-Welding-Society ultrasonic specimen were used for test welds. The temperatures have been measured during welding with an iron-constantan temperature probe in the center of the adherends (Fig. 3). Therefore the 0,1mm thick wires of the temperature probe have been embedded in the probe under a high pressure to assure the thermal contact. After that parameter studies have been performed with different velocities and frequencies. 

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