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Capillary Dies in Capillary Rheometer

Gain an understanding about the selection of capillary rheometer dies that Dynisco produces for various applications. Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

05.21.18

Laboratory Mixing Extruder as Spinning Tool to Fibrillate Droplet Phase of Polymer Blend Systems

Nowadays, composites are ubiquitous in many parts of modern societies such as constructions, textiles, nonwovens, and automobile industry. In composites, interface plays a pivotal role in final mechanical properties. Learn More

By Roozbeh Hajiraissi

03.02.18

Correlation of Melt Viscosity of Polyethylene Terephthalate to Solution Intrinsic Viscosity

Polyethylene terephthalate (PET) is a hygroscopic resin from the polyester family which absorbs moisture onto their molecular structure when they are exposed to the ambient air. This has a huge effect on the flow behavior and rheological parameters of the plastic melt. Learn More

By Azadeh Farahanchi

01.14.19

Extensional Viscosity – Rheological Significance of the Entrance Pressure Drop

Extensional/elongational viscosity measurements (melt strength) are of rheological importance in any plastic stretching process for example blow molding, sheet extrusion, blown film extrusion, fiber spinning, etc. as the plastic is constantly stretching or expanding in such processes. Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

07.16.18

How Rheological Data from a Capillary Rheometer Can Help to Have a Better Metal Injection Molding (MIM) Process?

One of the key factors in any MIM process is the flow behavior of the feedstock during filling of of the mold. In order to have a defect free molding process (without jetting, short shot, sink mark, crack, etc.) with desired mechanical strength (tensile, flexural, failure stress, etc.) in the final products, understanding of the rheological properties of the binder and feedstock is necessary Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

03.29.19

Detecting Polymers in Material Products

It can be very difficult, if not impossible, to achieve complete indentification of most polymer products. However, in most cases, this is usually not needed; what is needed is the separation, or identification, of numerous molding materials whose identity has been lost, or an indication of the type of material used to create a component. Learn More

By Dynisco

03.01.18

Correlation of ViscoIndicator Online Rheometer to a Laboratory Melt Flow Rate Tester

Online rheometers have been used increasingly in plastics processing and recycling industry to provide continuous data stream of rheological properties and real-time information on an extrusion process. This can beneficial for controlling of in-process product quality, reducing of waste stream, and increasing of process efficiency Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

10.02.18

Understanding the Shear Thinning Behavior of Thermoplastic Materials Using an Extrusion Plastometer (Melt Indexer)

In this blog our Rheological Scientist, Azadeh Farahanchi Ph.D. discusses how to understand plastic shear thinning behavior using a melt indexer Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

07.30.19

How to Measure Polymer`s Apparent Melt Density using a Melt Indexer

Method A/B is a test that can be performed in a melt flow rate tester in order to calculate the value of the polymer`s melt density at a specific temperature Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D

07.09.19

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