Cianoacrilatul
#1
Postat 11 August 2012 - 03:23 PM
#4
Postat 11 August 2012 - 05:34 PM
E drept ca am vazut asta la niste superglue generic, n-am avut de-a face cu CA special pt. rc
Aceasta postare a fost editata de DanB: 11 August 2012 - 05:34 PM
#5
Postat 11 August 2012 - 09:31 PM
http://www.greatplan...s/gpmr6001.html
Multa, multa bafta.
PS. Daca tot am pomenit de Great Planes, va cer scuze, dar nu ma pot abtine sa va spun, ca cel albastru, ``Thick, Slow Cure CA-``, este o nebunie.
Aceasta postare a fost editata de dan_mitea: 11 August 2012 - 09:34 PM
#6
Postat 12 August 2012 - 06:31 AM
#7
Postat 12 August 2012 - 07:07 AM
Am doua flacoane de 10 grame de CA deschise cam in accelasi timp si folosite cam in aceleasi conditii. Ambele au peste un an de la cumparare.
Una este inca fluida aproape ca apa, cealalta intr-o saptamana a trecut instant prin starile... smantana, miere si acum e gelatina ! Si stand inchisa in tot acest timp. Cred ca al doilea a fost expus cumva la apa fara sa imi dau seama, si, din acel moment a fost bun de folosit imediat sau aruncat.
Dupa cum zice wikipedia:
"... rapidly polymerises in the presence of water (specifically hydroxide ions), forming long, strong chains, joining the bonded surfaces together. Because the presence of moisture causes the glue to set, exposure to moisture in the air can cause a tube or bottle of glue to become unusable over time. To prevent an opened container of glue from setting before use, it must be stored in an airtight jar or bottle with a package of silica gel. Another tactic is attaching a hypodermic needle on the opening of glue. After applying, residual glue soon clogs the needle, keeping moisture out. The clog is removed by heating the needle (e.g., by a lighter) before use."
Aceasta postare a fost editata de renatoa: 12 August 2012 - 07:08 AM
#8
Postat 12 August 2012 - 05:18 PM
#9
Postat 12 August 2012 - 05:29 PM
Multa, multa bafta.
Aceasta postare a fost editata de dan_mitea: 12 August 2012 - 05:30 PM