OVEN STABILITY

Table I. Comparison of Coko Oven Stabilities Predicted from Highly Oxidized Coals on an As-Received and Corrected Basis...

Coal Blend No. A 500-lb. Oven Stability B As-Received Basis A-B C Corrected for Oxidation A-C... 

The effectiveness of antioxidants as preservatives for fats and oils is evaluated by determining the rate of peroxide development using the Active Oxygen Method (AOM) (29). The development of a rancid odor is used to evaluate the stability of food items (Schaal Oven Stability test) (30). 

Microcellular crumbs can be used in considerable quantity along with china clay and whiting to reduce the product cost. Higher proportions of stearic acid (5-10 phr) are normally used in microcellular compounds in order to bring down the decomposition temperature of DNPT type blowing agents (see Appendix AlO). Post-cure oven stabilization of the microcellular sheets, typically at 100°C for 4 h, reduces the delayed shrinkage after cure to a minimum. 

The torsion measurements were carried out on a Rheometrics RMS 7200 (3) load frame, modified in our laboratory witii a computer controlled servo-motor. The sample and grips were housed witiiin a heater chamber for temperature control, with a measured oven stability [based on tiie range of measurements] of better tium ... 

Thermal Stability - The resistance of a physical system such as material to decomposition, deterioration of properties, or any type of degradation in storage under specified conditions. Also called oven stability, heat stability. 

The basic type of stabilizer system selected is often dictated by end-use or regulatory constraints (NSF, PPI, FDA, and BGA). Subsequent choice of a specific stabilizer should be made with the major objective of achieving optimum cost-performance How much processing stability is available per dollar of stabilizer cost Or, conversely, what will be the lowest-cost choice to furnish the required processing stability for a particular process— including all safety factors such as regrind extmsion, power failures, and end-use stability needs A level of stability much beyond the necessary level can translate to significant unnecessary costs. Laboratory tests (Brabender, mill stability, and Metrastat oven stability) can furnish an indication of comparative cost-performance, but the final decision really should be based on... 

Compatible with aqueous systems - does not affect brushing, flow, leveling, grinding, viscosity, gloss, oven stability, drying, tinting, or washability properties of aqueous systems. 

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