Melt Processing Rubbers MPRs

MPR (Melt Processable Rubber), a blend of vinylidene chloride and crosslinked EVA,... [Pg.659]

MPR melt-processable rubber MVE methyl vinyl ether... [Pg.603]

MPR Melt-processable rubber Acrylyn E. I. du Pont de Nemours Co. [Pg.2359]

Alcryn (Advanced Polymer Alloys Division of Ferro Corporation) is an example of a melt-processable rubber. These are partially cross-linked halogenated polyolefin MPR blends. The specific gravity ranges from 1.08 to 1.35. [Pg.342]

EA-MPR Elastomer alloy melt processable rubber Alcryn EA-TPV Elastomer alloy thermoplastic vulcanizate Lomod Santoprene... [Pg.162]

MPRs are amorphous polymers, with no sharp melt point, which can be processed in both resin melt and rubber processing machines, injection molded, extruded, blow molded, calendered, and compression molded. 1 Flow properties are more similar to rubber than to thermoplastics. The polymer does not melt by externally applied heat alone, but becomes a high-viscosity, intractable semifluid. It must be subjected to shear in order to achieve flowable melt viscosities, and shear force applied by the plasticating screw is necessary. Without applied shear, melt viscosity and melt strength increase too rapidly in the mold. Even with shear and a hot mold, as soon as the mold is filled and the plasticating screw stops or retracts, melt viscosity and melt strength increase rapidly. [Pg.213]

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