[Ronja] Sealant reaction...

[Jakub Sykora]

EN version:

Hi there,

so I have the answer. It is pretty complicated in czech, but I will try 
my best to translate it into english.

cite:
"Your friend (meant you) probably used unappropriate silicon and even 
silicon glue. Sanitary silicon contains - with highest probability - a 
reactant, that destroys microbes, rust etc., but it uses active oxygen 
to reach this effect (free O2 moleculas). This sealant is used in 
bathrooms. I do not know the manufacturer of this sealant, but it 
obviously contains per-acetic acid which was used to desinfect places. 
It simply releases oxygen and stinks like vinegar."

As far as I know, oxygen oxidizes nearly everything and PP-H is not 
suited to be exposed to UV, O2 and other harmful biases.

Be glad, that it broke before you installed it anywhere.


CZech version:

Ahoj,

je to trochu slozitejsi i v cestine, ale pokusim se to prelozit do 
anglictiny.

citace:
"Kamarád si vzal asi nevhodný silikon a možná i lepidlo. Sanitární 
silikon obsahuje s nejvetší pravděpodobností sloučeninu, která ničí 
mikroby, plísně atd, ale to ničí volným kyslíkem a ten může provést to 
co provedl. Tento silikonový tmel se používá do spár ve sprchových 
koutech nebo koupelnách. Neznám výrobce, ale zřejmě obsahuje peroctovou 
kyselinu, ta se používala na desinfekci pod názvem Persteril nebo tak 
nějak. Prostě uvolňuje kyslík a smrdí po octu."

A kam az sahaji me znalosti chemie, tak kyslik oxiduje na co prijde. A 
PP-H neni staveny na to, aby na nej pusobily spatne vlivy jako je UV 
zareni, cisty kyslik atp.

Bud rad, ze se to rozpadlo driv, nez jsi to nekam namontoval.

K

Gyurkó Martin wrote:
> Hi Everybody!
> 
> I sealed about 10 months ago a lens into a PVC tube with a transparent 
> silicon sealant.
> I did not have time, and forgot the whole project in my craftsroom. 
> Dark, normally tempered, with low humidity.
> Now I found it with a shocking result:
> 
> http://atomblitz.uw.hu/
> 
> The sealant turned brown, and it also detached from the PVC pipe.
> Maybe a chemical reaction, but i have never seen this kind before.
> I made pictures of all the used materials.
> 
> Did anyone have similar results?
> 
> Bye
> Martin
> 

-- 
Jakub Sýkora
email: kubajz na kbx.cz       <')
ICQ: 68976632               ( =-
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