Martin Stew

18 Questions 18 Answers 0 Followers

Questions related from Martin Stew

Is there a facile process of synthesis of colloidal silica particles in non-polar , anhydrous solvents of size 10 to 20 nm ?

Contrary to popular synthesis technique , i wish to understand if we can generate silica np in non-polar solvent

11 November 2019 3,554 3 View

What is the most facile process for synthesis of 40 nm , Cerium Doped WO3 ?

Can someone please help me with 40 nm APS , Cerium doped Tungsten Oxide . What are best precursor which are easily available ?

05 May 2019 1,989 5 View

Is any hydrophobic anti-corrosion durable system that can pass B 117 test for salt spray ?

I am looking for any research or commercially available options for hydrophobic anti-corrosion top coating

04 April 2019 5,966 1 View

General Chemistry : how to design a solution wherein transparency (post curing) is not lost ?

Some students asked me , if lets say 4 chemicals are mixed in desired proportions , is there any method the predict the transparency i.e post application on suitable substrate it will not become...

07 July 2018 9,504 0 View

Had someone achieved durability for glass hydrophobic coatings using FAS17 and facile process?

I read a publication that speaks about FAS17 being used with simple solgel method .It had facile process , transparent , 150+WCA but lacked durability of scratch resistance and mechanical abrasion...

06 June 2018 7,798 2 View

Can we used siloxane or silazane with FAS17 (a Hydroxyl terminated system) ?

Since silazane and siloxane are ambient curable , is it wise to introduce FAS17 to increase hydrophobicity ?

06 June 2018 7,921 1 View

To Geniuses: After reading lots of literature for Superhydrophobic Coating , Should I accept the fact that such coatings are not transparent ?

Be it Metal or Glass surface , after experimenting with FAS 17 Functionalised SiO2 Particles , Coilloidal particles in various solvents , TiO2 particles , FD_POSS etc Shall I conclude that inorder...

05 May 2017 1,119 6 View

Which solvent is better for a sol-gel based from TEOS ?

I want to know that amongst Anhydrous Ethanol ,Acetone AR ,THF , Toluene , Which is best compatible for Hydrophobic coating based from TEOS and Amino Silane.

05 May 2017 1,257 5 View

How to control the nano-size of particles of pure TiO2 and ZnO by using sol-gel method?

Please some literature as to synthesis of pure TiO2 particles in system . I want particles of 10nm , 20 nm and 150 nm .If possible also let me know the precursors for the same and de-agglomeration...

05 May 2017 7,813 4 View

Bare Basics : Which calculation is more accurate, Based on %W/W or Molar ratio with respect too of the chemicals ?

Which calculation is more accurate, Based on %W/W or Molar ratio with respect too of the chemicals ?

05 May 2017 3,656 4 View

I am using bees wax for coating but in order to coat a substrate i need to melt it , is there any way its soluble in any solvent ?

Application is a problem for me after melting bees wax at 80 deg C .

05 May 2017 2,674 1 View

Curiousity : What will happen if i use 'microwave oven' instead of ultrasonicator for SiO2 particles suspended in a solvent to prevent aggromeration ?

just a curious question .Will the freq & power in the oven agitate the particles enough to separate them ? since Oven have more power than ultrasonicator what could go wrong ?

05 May 2017 7,709 3 View

My superhydrophobic coating loses its effect , Please help ?

My superhydrophobic coating loses its effect , Please help .

05 May 2017 9,187 3 View

Are there any IR curable Resin /Polymers that are compatible with SiO2 ?

i am looking for Resin /Polymers which have low viscosity and are compatible with my SiO2 Sol Gel .

04 April 2017 4,486 1 View

Are there any commercially available polymer that i can use as binder for hydrophobic glass coating ?

I am looking to solvent soluble binder which will maintain optically transparent for glass & miscible with ethanol sol gel .

04 April 2017 8,913 2 View

Which chemistry (coating of 1 micron thickness) can get me high micro-hardness and good adhesion to a metal substrate?

Is it possible get high micro-hardness like 9H pencil hardness and adhesion of 5B to metal substrates within just 1 micron of coating thickness ? Please suggest literature in which its moisture...

04 April 2017 1,531 5 View

How much mL of H2O is right amount for a (ph 3) acidic solution of 10mL TEOS and 30mL of (99%ethanol) for making a hydrophobic coating on glass ?

Inspite of adding different volume of H2O into the solution , i am not able to get hydrophobicity with TEOS(Tetraethyl Orthosilicate) ,HCL,ETOH and H2O solution. Are my volumes right ? I suspect...

02 February 2017 5,180 4 View

Transparent Super-hydrophobic Durable Coatings

Agenda : Discussion about transparent Super-hydrophobic coatings that can last multiple durable cycles without impacting water contact angle drastically . Many method exists but they are not...

01 January 1970 5,184 15 View