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The plasticization of rubbers

SpecialChem / Dec 17, 2003

The curing of rubbers leads to a limited range of properties that is not sufficient to open all the doors of the industrial applications. The plasticization of rubbers has been used since the beginning of the natural rubber industrialisation to: * Ease processing * Increase the loading * Soften the vulcanizates * Improve low-temperature behaviour… Starting from natural products such as pine-tar, vegetable oils and so on, the plasticizers were more and more sophisticated. Now, there are two main types: * The petroleum oils especially for hydrocarbon rubbers such as SBR * The esters especially for the polar rubbers such as NBR. The response depends on the chemical nature of the rubber. Oils are preferably used in non-polar rubbers because of the better compatibility. The table 1 displays some examples of solubility parameters of rubbers and plasticizers (oils and esters). The benefits of the plasticization can be suppressed if the plasticizers disappear during the service life by: * Volatilization, the more so as the temperature rises

2 Comments on "The plasticization of rubbers"
naresh j May 9, 2017
DEAR SIR I AM MANUFACTURING SPIRAL PAPER TUBE PAPER CORE ETCI AM IN NEED OF YELLOW DEXTRIN WITH SODIUM SILICATE , TO INGRESS TACKINESS KINDLY GUIDE ME PROPER METHOD TO INC-RES TACKINESS OF SODIUM SILICATE AWAITNG YOUR REPLY THANKING YOU NARESH JOSHI
Rommy D Aug 30, 2016
Dear Sir / Madam I went through your article regarding sodium silicate for adhesives, and tried on my home project. I tried to spray on my glass table top and left it for a few days to dry but there was no affect, i tried using a hair dryer the liquid started to foam. Then i tried to spray on my wood table and the same thing happened. I also tried doing it by paint brush but it did not dry. Can you please help me thanks Rommy.L Jakarta, Indonesia

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