نتایج جستجو برای: molten polymers

تعداد نتایج: 79954  

1999
Emerson Y. Arashiro Nicole R. Demarquette

In this paper the pendant drop method to measure interfacial tension between molten polymers is reviewed. A typical pendant drop apparatus is presented. The algorithms used to infer interfacial tension from the geometrical profile of the pendant drop are described in details, in particular a new routine to evaluate correctly the value of the radius at the apex of the drop, necessary to the calc...

2015
Juan Lobos Steven Iasella Miguel A. Rodriguez-Perez Sachin S. Velankar

Polymers such as poly(lactic acid) (PLA), which have poor melt strength, are difficult to foam due to severe cell coalescence during foaming. We show that addition of a few percent of polytetrafluoroethylene (PTFE) particles can stabilize PLA foams against bubble coalescence and collapse. The particles and a chemical blowing agent, were dispersed into the PLA by extrusion, and then foamed by he...

Journal: :Helvetica Chimica Acta 2023

The development of porous materials is great interest for the capture CO2 from various emission sources, which essential to mitigate its detrimental environmental impact. In this direction, organic polymers (POPs) have emerged as prime candidates owing their structural tunability, physiochemical stability and high surface areas. an effort transfer intrinsic property a cyclotetrabenzoin-derived ...

Journal: :Composites Part B-engineering 2021

This study aims to assess the viability of nanocomposites in fused filament fabrication. Polylactide/organo-modified layered silicate materials have been studied terms structure and properties evolution through whole manufacturing chain, for thermomechanical optimisation. The method included optimisation by composite formulation additive process experimental designs. A competition between flow ...

2012
Hung-Yi Chen Shiuh-Jer Huang

The twin-roll strip casting process is a typical steel-strip production method which combines continuous casting and hot rolling process. The production line from molten liquid steel to the final steel-strip is shortened and the production cost is reduced significantly compared to the conventional continuous casting. The twin-roll strip casting process can produce 1-5 mm thin steel strip direct...

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