What is Rheology?

Dynisco, with its diverse portfolio of sensing and polymer testing equipment, brings rheology to the masses.

Why It Is Important to Avoid Degradation and Keep Polymers in Specification?

Polymer degradation has a direct impact on the properties of the final plastic product.

• Short-term and long-term properties such as impact resistance, fatigue resistance, and enviornmental stress cracking resistance are all sensitive to the changes in molecular weight. 
• As recycling mandates require corperations to use a certain percentage of recycled content, it is important to keep producers' reprocessed scrap or the purchased recycled materials as close to their virgin specifications as possible to maintain quality.
• Also, the polymer is a "blind item". Recyclers and manufacturers can not tell the polymers' specifications just by looking at them.

Verification of the rheological properties of polymers is thus important to:

• Minimize degradation during the recycling process
• Ensure that the polymer does not degrade to affect the quality of the product

It can provide companies with accurate information that allows them to validate and if necessary adjust their process to ensure the products they make either meet or exceed their specifications. This is especially important as plants often process tens of thousands of pounds of material at a time. Without having real-time knowledge of the rheological properties of the materials, manufacturers risk spending hours producing bad products before realizing it, thereby wasting time and money, sacraficing process consistency.

Online Rheometers

Take the next step by adding a Dynisco ViscoIndicator Online Rheometer to your standard extruder that enables full lot-to-lot measurement of your production run while allowing you to send an automatic signal to your blender or feeder for real-time adjustment of your production line.

Online Rheometers

Melt Flow Indexers

Melt flow indexers provide plastics processors and recyclers with valuable information that either confirms a polymer's specification on a polymer data sheet or, in the case of recycled material, informs operators of the current melt flow index (MFI) or intrinsic viscosity (IV) of the recycled plastic.

 

 

 

Melt Flow Indexers

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dynisco IoT Cloud Connect

Dynisco is now manufacturing products that can be merged with data science. IoT Cloud Connect, for example, provides a window into your processes and can help you discover new insights previously unseen. All test samples can be uploaded to the Dynisco IoT Cloud Connect by phone, tablet, or PC. This is where your polymer data can be stored and compared by device, production run, operator, and global location. The aggregation of data gives insight into the process and helps to better understand and manage control strategies that adjust the process to improve material quality, material verification at each stage of the process using correlations, variations in the properties of plastic that effected product quality, and enviornmental conditions that lead to variations in test or production processes.                                                                                           
Dynisco Cloud Connect™

 

Resources

 

Rheology Blog  Dynisco ViscoIndicator Webinar  Simplified Rheology for the Masses: A Technical Discussion