How to remove cured epoxy stain from steel ?

I used hardened steel film applicator to coat epoxy based coating on metal substrates. Due to improper quick cleaning techniques, now there are some left over cured epoxy stains. How do I remove...

08 September 2019 7,839 6 View

How is the efficiency of mixing in Magnetic Stirrer for quantity as low as 20-50 ml ?

I want to mix nano particle in acetone using Magnetic Stirrer. But I require only 20 ml, will the efficiency be good for 20 ml ?

07 August 2019 3,424 4 View

Can Statistically insignificant (P>0.05) result from error in selection of levels or in conduction of experiment ?

In my experiment I used Taguchi's L9 (3 factors 3 levels) orthogonal array and the P values from ANOVA for all the three factors is greater than 0.05. Now I strongly suspect there is association...

06 July 2019 7,552 5 View

Are there any good materials available to learn material characterization using SEM and TEM ?

I want to learn how to prepare specimen before SEM and TEM analysis and also on how to evaluate the image we get from it. The material in my case is a polymer nanocomposite coating.

05 June 2019 3,060 4 View

Which coating technique can be used to coat a circular specimen of diameter 3 mm ?

I want to coat over a small area with the diameter of the circular area being just 3 mm. The coating material is epoxy nanocomposite with a inorganic filler and the material has to be coated over...

01 February 2019 3,583 5 View

Does trimethyl stearyl ammonium contain hydroxyl group ?

Can anyone give me the chemical formula of trimethyl stearyl ammonium ? Does it have hydroxyl group ? It is a quaternary ammonium but does stearyl group indicate that it has an hydroxyl group.

10 November 2018 4,993 4 View

What are the techniques to remove solvent from epoxy nanocomposites ?

Epoxy nanocomposites can be prepared by solution casting method. In order to get rid of the solvents what could be done ?

08 September 2018 6,454 7 View

How can I learn Design of Experiments quickly ?

Is there any book or website that allows you to learn DOE very quickly ? I know that Montgomery is a very good book. But I do not have sufficient time to go through that.

08 September 2018 5,663 0 View

What is the meaning of the word 'optimization' in research ?

I have one output response, say surface hardness of metal matrix. In order to improve that say I incorporate hard particles. By conducting experiments assume that the ideal volume fraction for...

07 August 2018 3,926 15 View

Can I conduct abrasive wear test of nanocomposite coating applied on a steel substrate using the 3 body abrasive equipment ?

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...

07 August 2018 6,008 1 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 View

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View