Two firms reported at GPEC that barrier beer bottles, another unused PET waste stream, can also be reclaimed by alloying
. Clariant Corp.
A big question for the Catalloy catalyst alloying
system is what will become of it in the proposed marriage of the polyolefins businesses of Montecatini SpA with Royal Dutch Shell of the Netherlands.
Dan Kelly, business manager for GE Plastics' Cycoloy PC/ABS alloy line, agrees, adding that processors in the future will see alloying
and blending technology that provides better yields of good parts, less scrap, improved flow, faster cycles, and ultimately lower per-part manufacturing cost.
R&D on entirely new polymer groups will continue through the 1990s, despite the far greater emphasis placed on technologies of alloying
and copolymerizing of existing resins.
elements can cause the formation of fine pearlite during slow cooling from the austenitic region.
Elimination of such additional processing and alloying
steps would result in major economic benefits for both producers and processors.
Novel thermoplastic alloys, developments in compatibilizers, and new data revealing the effects of twin-screw extruder die design on resin morphology highlighted Compalloy '90, the Second International Conference on Compatibilizers and Reactive Polymer Alloying
, held recently in New Orleans.
The distinction between the two materials (primary and secondary aluminum) is underscored by the physical fact that primary wrought products require a lower impurity level than do cast products because some common alloying
agents (copper and silicon) reduce aluminum ductility.
Alloy type--This is important because alloying
elements change the solidification rate.
of Pittsburgh, Pennsylvania, has formally opened a new 40,000-sq-ft Development Center for studying the alloying
of metals and providing customer support.
Generally, the byproducts of these reactions (including both stable compounds and glasses resulting from melting, alloying
and refractory wear) are lumped into the general term "slag."
In cases where carbon is either an alloying
element (as with cast iron) or used widely as a cover (as with copper-base alloys), some carbon control is justified while using a vacuum immediately after startup.