Ahmed Naser

4 Questions 9 Answers 0 Followers

Questions related from Ahmed Naser

How to identify what type of fillers are in a polymer?

Hello everyone, I have some PHAs blended with fillers and nucleating agents, yet I don't know what kind of fillers or nucleating agents. The producer has shut down and there's no way to get in...

25 February 2021 1,886 8 View

How to measure the hardness for PLA & PHAs polymers?

Hello, I am a bit confused on whether to follow ASTM D785 (Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials) or ASTM D2240 (Standard Test Method for...

22 January 2021 7,635 4 View

How to calculate the Flexural modulus for plastics?

Hello everyone, I have the attached Excel file containing the results and equations required to calculate the modulus of flexural for injection molded plastics (in this case PHAs) as per ASTM...

17 December 2020 931 12 View

How to properly purge an injection molding machine?

Hello, We're trying to purge a mini injection molding machine after not using it for a while now. The resin inside is PHA and can be some PLA left over as well. We've tried using a purging...

09 October 2020 4,829 5 View