Can anyone tell me the method of producing the hydrophobic fumed silica/epoxy resin coating with hydrophobic features?

06 May 2016 1 247 Report

I tried to mechanically disperse the hydrophobic fumed silica into the epoxy resin, but it has no significant effect on the hydrophobicity of epoxy resin.

Andrei Rogoza

Silanation with trialkoxy alkylsilanes is common useful method :

1) http://file.scirp.org/pdf/AMPC_2015021610385335.pdf

2) http://www.dowcorning.com/content/publishedlit/26-1402-01.pdf

Hexamethyldisilazane is also useful reagent for simple silica hydrophobization

http://www.google.com/patents/US4719243

Badges
Science topic

More Moslem Najafi's questions See All

Which one is more valid for monitoring people's visual attention to a visual stimulus (eg: website design elements)?

1. Fixation Count (FC) 2. Fixation duration (FD) 3. both Thanks for the response from the experts in this field Farangis Najafi PhD candidate in sport management at SCU, Iran

23 May 2024 237 0 View

What mechanisms reduce pressure in a car battery pack post-cell explosion, and what safety issues arise?

The question is about the safety mechanisms in place within a car battery pack to manage and reduce pressure after a cell explosion. This is a critical aspect of battery technology, particularly...

18 April 2024 3,376 1 View

How critical is the 65°C denaturation step in cDNA synthesis?

Hi All, I was synthesizing cDNAs and after denaturation at 65°C for 5 min, I was late for immediately placing the tubes on ice. The temperature decreased to 50°C when I was transferring tubes on...

06 November 2023 5,693 0 View

Dear researchers and inventors, I would be grateful if you do favor and let me know for sailing my US patent . What route do you suggest?

I have an US patent and tend to sale it.

29 June 2023 3,794 1 View

The best source of Arginine for the synthesis of polyamines?

what is the best source of Arginine for the synthesis of polyamines?

17 June 2023 7,877 1 View

How to Production of polyamine biostimulants?

07 June 2023 9,553 0 View

Opening large-size expression data in Mac?

Does anyone know what text-editor software (compatible with Mac) works well for opening the big (>4 G) files which are in CSV or text formats? I have a file with ~18,000 rows and 200,000 columns...

21 February 2023 8,510 0 View

What are differences between finate rate and eddy rate in CFD fluent?

i have a problem with reaction modeling by Ansys Fluent. when i change the Arrenius parameters, nothing change and it makes me confuse. can anybody help me?

06 January 2023 2,888 2 View

Hello, can you explain to me how i can modeling a reaction that is not Arrhenius in Ansys Fluent?

there are six reactions that they are not linear or Arrhenius, so i need use some txt program to insert in app, but i don't know how? can anybody help me?

06 January 2023 9,054 3 View

What are the resources to start this research?

Hello to all dear friends! Can you introduce suitable sources for studying the topics of urban segregation, inclusive city and informal settlement? Thank you for your help

08 November 2022 8,498 6 View

A positively charged and 10x his-tagged protein that doesn't bind to any chromatographic resin?

Hello everyone, I am currently working on a protein that is 10x his-tagged and positively charged (predicted pI=10.16). But when I tried to use Ni-NTA column to purify the protein, it's not...

24 July 2024 7,293 4 View

What is the principle/mechanism behind aging of carbon (graphite) containing refractory mix for isostatically pressed refractories?

The resin bonded carbon containing refractories are aged before use. How time of aging is determined? And mechanism behind aging.

23 July 2024 3,205 0 View

Prevent sedimentation and maintain the suspension of powder particles in the resin ?

Hello, I am experiencing an issue with mixing micro powder with resin in a 3D printer. The problem is that sedimentation occurs after a short period (about half an hour to an hour). Could you...

23 July 2024 1,672 0 View

I want to buy Hydrothermal Synthesis Autoclave from any European company. Can anyone suggest any company inside Europe?

Thanks

22 July 2024 1,143 3 View

Is it possible to manufacture polypropylene sheets using a biaxial process?

I know that films and other low-thickness laminated products are produced using biaxial orientation, but is there something similar for sheets with a thickness of around 6 mm? Or are they...

21 July 2024 1,559 1 View

Hi dear researchers, do you suggest the best and shortest path for chemical synthesis and green synthesis of magnetite(Fe3O4)?

Suggest the best and shortest route for the chemical synthesis and and green synthesis of magnetite(Fe3O4) The chemical synthesis should contain the least dangerous chemicals along with full...

21 July 2024 2,476 2 View

Any relation between resin viscosity（mPa*s）and resin relative molecule weight？why the former is used in manufacture?

https://en.wikipedia.org/wiki/Viscosity

21 July 2024 3,089 4 View

Is it possible to conjugate an NHS ester to the N-terminus of a peptide ON RESIN?

So i have a few peptides (synthesized by SPPS and not cleaved from resin) and I want to add a maleimide label. We have NHS-PEG-Maleimide and from literature it is evident that the free amine group...

18 July 2024 4,075 3 View

Recommendations for his-tag magnetic beads / resins?

Good day everyone, Trying to perform protein purification for the first time, gotta buy the whole equipment/reagents. Protein of interest 48 kDa (Antithrombin), expressed from his-tagged plasmid...

16 July 2024 3,692 6 View

Im trying iodination of an arene, but only getting black precipitates, is there anyone with iodination experience who can advise?

Organic Synthesis. My student has been trying iodination of arenes (our goal is to iodinate p-phenylenediamine) following these literature procedures: 1. Synthesis 2004, No. 11, 1869-1873 using...

16 July 2024 6,630 1 View