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Cleaning product

$100-300 USD

Anulowano
Opublikowano ponad 9 lat temu

$100-300 USD

Płatne przy odbiorze
The product (formula) we need is to solve the problem of corrugated fiberglass (which is being used to cover greenhouses) from turning into yellow. The new fiberglass color is white (semi transparent). However, after some time it turns into yellow and in less than a year it turns into brown.
Identyfikator projektu: 6674694

Informację o projekcie

6 ofert
Zdalny projekt
Aktywny 9 lat temu

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6 freelancerzy składają oferty o średniej wysokości $350 USD dla tej pracy
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Chemical engineer. Master's in Precise Organic Synthesis and Bachelor's in Nuclear Chemistry. 7+ years of competitive lab experience - formulation, synthesis, analysis. Managed people. Educated people. Project led. More than 28 finished international and local science projects. On topic - The process described is called yellowing. It's caused by the UV radiation. There are some chemicals that slow it (most added in the process of manufacture). A coating can be developed, too. Its results will be weaker, due to the sole advantage of binding between UV stabilizer or Optic Whitener and the base of the polymer. The yellowing is unavoidable with time, irreversible and sooner or later all plastics and polymers start to yellow.
$333 USD w 15 dni
4,4 (1 opinia)
3,4
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I can provide you with solution for this within next 5 days. Text me .
$500 USD w 5 dni
0,0 (0 opinii)
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((((((((((((((((PLEASE CHAT ME i can help you very low budget)))))))))))))))))))))))) ......................................................................................................................
$100 USD w 1 dzień
0,0 (0 opinii)
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Hi, I am a PhD student, I have advanced knowledge in physics and chemistry, I can do this job in 15 days
$888 USD w 15 dni
0,0 (0 opinii)
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Dear Sir, My name is Emmanuel Nwose. I am a chemical engineer with masters in advanced chemical engineering. I understand your require a solution for cleaning or preventing the color change noticed on a corrugated fiberglass. I can deliver a process or solution in ensuring that the original color can be maintained. Please feel free to contact me for further discussion. Thank you as I await your positive response. Yours sincerely, Emmanuel Nwose
$277 USD w 5 dni
0,0 (0 opinii)
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We are the part of group at the University of Novi Sad, Serbia, which is dealing with problems regarding material (polymer and ceramics) , environmental and chemical engineering. We also have some experience in photocatalytic coatings in cultural heritage. Sincerely, Dr. Bera Oskar ing. Kojic Predrag
$222 USD w 2 dni
0,0 (0 opinii)
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Hi. I have been thinking about the problem you face and have a question. Are you looking for a fibreglass formulation that is more resistant to discoloration over time or a cleaning product to try and remove the discoloration once formed. My gut feeling is that a cleaning product will not be effective if the fibreglass has darkened within the internal matrix and that the ultimate solution is to use UV resistant fibreglass in the first instance. Happy to discuss further via email to determine how we may be able to assist you. (My colleague, Greg Anderson, is a very experienced chemist) I loo forward to your response. Regards Andre'
$277 USD w 5 dni
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O kliencie

Flaga BAHRAIN
Manama, Bahrain
5,0
175
Zweryfikowana metoda płatności
Członek od mar 16, 2013

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