Hi Praveen,

I would suggest the combination of two techniques will be best for making good composite, namely sonication and twin screw melt mixing techniques. First you can mix them through sonication and later extrude it from extruder.

If you have any other query related to your work, please feel free to contact me on my mail ID

[email protected]

Check this thread and responses, particularly those from Alan Rawle: https://www.researchgate.net/post/Which_method_is_best_to_combine_two_variety_of_catalysts_with_uniformly

Hi Praveen!

If you want to make composite parts via injection moulding, then sample preparation by extrusion / melt-compounding is more apt. I am attaching here procedure that I used for synthesis of CNT nano-composites in PBT, PA and ABS. The only requirement is that minimum production quantity must be 1 kg of polymer pellets.

On the other hand; if you want to prepare TPU composites in small quantities and in the form of thin films then solution dispersion is a better synthesis method. The PDF attached here will help you with the solution dispersion route we used for preparing TPU/CNT thin films.

Hope this helps!

Hi Praveen,

I would suggest the combination of two techniques will be best for making good composite, namely sonication and twin screw melt mixing techniques. First you can mix them through sonication and later extrude it from extruder.

If you have any other query related to your work, please feel free to contact me on my mail ID

[email protected]

Hi swamini ,

Greetings for your materialistic reply!

Melt compounding is the best known process for a good

composite.If you come across any other effective process which can mix functionalized mwcnt with TPU pellets.Please kindly share.

Thank you.

Praveen, melt compounding works for any type of filler. The MWCNTs being functionalized does not hamper the process. I have dealt with functionalized MWCNT powder and polymer pellets also through melt compounding. The composites prepared are homogeneous and test results are also as expected after injection moulding the samples.

Alternatively, you may also go for compression moulding or transfer moulding for preparing TPU/MWCNT nano-composites. In this case you can adopt two routes:

(1) Prepare composite pellets by melt compounding as we know it and then use them as raw material for compression moulding or transfer moulding (just like injection moulding). But if you are anyhow going to the length of preparing composites by melt compounding then injection moulding is still better.

OR

(2) Instead of using TPU pellets you can use TPU powder or TPU liquid. Prior to moulding; you can mix MWCNT powder with TPU power / liquid using sonication. Then mould the desired part via compression moulding or transfer moulding.

Regards!