手术刀
发表于 2025-3-23 13:03:50
Flow in Injection Mouldselt streams will interact with each other. This may occur because of flow splitting by an insert within the mould and the subsequent recombination of the separated flows, or because of the collision of flow fronts originating from two, or more, individual gates. (This may be considered as flow split
阻塞
发表于 2025-3-23 16:41:58
Characterization of Extrusion Dies by the Stress Distribution at the Die Exit and the Free Recovery pstream in the processing equipment. The analysis of these effects is quite involved since the flow in the extrusion die is inhomogeneous, i.e. the strain and temperature history is different for a polymer element of a layer near the wall and a polymer element flowing more in the middle of the flow
溃烂
发表于 2025-3-23 18:26:16
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pantomime
发表于 2025-3-23 22:51:04
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disparage
发表于 2025-3-24 04:17:12
Design of Polymer Melt Extrusion Dies to Avoid Non-Uniformity of Flowhermally, geometrically and kinematically. The mandrel of such a die must be supported in some way, either by a spider in an ‘in-line’ die or by a flow deflector in a ‘cross-head’ die. There may be two problems associated with the subsequent disturbance to the flow; firstly weld lines are formed in
分开如此和谐
发表于 2025-3-24 06:53:28
Time-Dependent Rheological Behavior of Polymeric Systemsonov. published a rheological equation, based upon irreversible thermodynamics, which describes the behavior of elastic polymeric fluids over a wide range of elastic strain. This model has subsequently been used for predicting flow orientation in injection molding., where it was shown that the time-
RAG
发表于 2025-3-24 11:34:06
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PIZZA
发表于 2025-3-24 18:29:59
Gelation and Fusion Characteristics of PVC Resins in Plastisol by Determination of Their Viscoelastin of this method for finger-printing the gelation and fusion profiles of commercial dispersion resins. The Rheometrics Mechanical Spectrometer was used in the dynamic oscillatory mode at 1 Hz with a programmed increase of temperature. The elastic modulus, G′, loss modulus, G″ and the complex viscosi
整顿
发表于 2025-3-24 20:05:43
Draw Resonance Studies on Polypropylene Meltsoccurrence of draw resonance can considerably limit productivity or can deteriorate product uniformity, its study is of significant importance for polymer processing. In particular during the last decade several researchers have studied the phenomenon of draw resonance, both theoretically and experimentally.
gerontocracy
发表于 2025-3-25 01:48:15
Time Dependency of Extrudate Swell of Molten Polyethylene introduces an element of uncertainty into the meaning of reported values of swell measured in the laboratory, and White and Roman. have pointed out that measured values depend strongly on the details of the technique used.