Processing ductility affected

Calcium carbonate is a commonly used filler in plastics processing. It improves the ductile performance of LLDPE and HOPE films. Coated or treated calcium carbonate helps to wet the plastic material to the mineral surface and improve the processing. The coating in calcium carbonate also helps to improve greatly the dispersion of the mineral into the polymer matrix [87]. High filler loadings, however, may adversely affect processability, ductility, and strength of the compound. 

The use of PC—ABS blends has grown significantly in the early 1990s. These blends exhibit excellent properties, particularly low temperature ductility, reduced notch sensitivity, and ease of melt fabrication. The blend morphology (229), ABS composition, thermal history (215), PC content and molecular weight (300), processing conditions, etc, all affect the mechanical behavior of PC—ABS blends. These blends have been most frequently used in automotive and other engineering applications. 

Relatively short-time tests indicate that austenitic stainless steels are ductile at all temperatures. This conclusion should not be considered valid for steels exposed to thousands of hours at process temperatures. Long exposures between, roughly, 800°F and 1,600°F precipitate chromium carbide and sigma phase in many stainless steels, causing a significant loss in atmospheric-temperature ductility. Ductility at higher temperatures is less affected. 

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