15 August 2018 0 170 Report

Is the 3 body abrasion wear tester recommended only for metal specimen. Can it be used to test polymer nanocomposite coating applied over metal substrates ? The coating thickness would be under 200 micrometer roughly.

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What is the harmless way of cutting epoxy filled nanocomposite ?

I want to cut epoxy filled nanocomposite for FE-SEM analysis. What is the best way to cut it without resulting in any cracks or change in position or alignment of the particle reinforcement ? Also...

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How to prepare the sample of polymer nanocomposite for SEM analysis ?

Does Epoxy clay nanocomposite sample require surface preparation. I am going for Gold sputtering to make the surface conductive. I guess there is no need to clean or polish the surface beneath the...

04 January 2021 1,943 8 View

How to measure diffusion coefficient of filled polymers other than standard immersion tests that consume lot of time and resource ?

Diffusion coefficient of filled polymers are experimentally determined by standard water immersion test (ASTM D570). This will enable us to determine percentage increase in weight with respect to...

15 November 2020 9,790 4 View

What is the difference between permeability and diffusivity ?

In polymer clay nanocomposites, researchers have studied water absorption by measuring the weight of specimen periodically when immersed in water. Diffusion coefficients are measured. How is...

29 October 2020 1,422 10 View

What could be the maximum amplitude in a ultrasonication process ?

If I can limit the temperature build up during the ultrasonication process, can I increase the amplitude from 30 to 100 % and observe the changes in the prepared nanocomposite. Some people are of...

12 March 2020 2,503 3 View

How to produce epoxy and epoxy nanocomposite free or free standing films ?

In order to analyze epoxy neat and nanocomposite coatings in SEM, AFM, etc. I need free or free-standing films. How do I produce them? Basically, if I coat the epoxy nanocomposite on a substrate,...

17 December 2019 3,367 5 View

Where can I buy air bubble release agent for epoxy from (only ones in India reply) ?

I found air bubbles in the cured epoxy coatings. I do not have a vacuum oven, vacuum pump, thinky mixer, etc. in order to remove the entrapped air. I came to know that there are bubble release...

11 December 2019 185 3 View

How to remove solvent without the aid of any equipment ?

After preparing epoxy clay nanocomposite using the solution intercalation method, how can the solvent be removed? I do not have a vacuum oven, vacuum pump, degassing equipment, etc. Are there any...

29 November 2019 4,076 2 View

Is afra heavy duty silicone spray or release agent compatible with epoxy ?

Application: to peel out epoxy coating from mild steel or glass substrate Basically I am going to apply epoxy coating on a substrate. But since I want to peel out the coating for further AFM/SEM...

20 November 2019 5,057 1 View

What is the glass transition temperature of LY 556 epoxy cured with HY 951 cured in room temperature for one week ?

I have used LY 556 and HY 951 in a 10:1 ratio and cured at room temperature for one week. Has anyone determined the glass transition temperature for this combination when cured at room temperature?

11 October 2019 3,393 3 View

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