A mixture of polyester resin and hardener at 10:1 ratio was stirred in a glass mug. And the ready mixture is poured into the E-Glass preform and compressed under a pressure about 200Kgf and temperature of 500C.
contg. approx. 20% wt. polymer and 80% wt water. The gel acts as an energy trap without generating hydrostatic pressures or leak risks typical of fluid energy sinks. The gel is contained adjacent to an integral air circulation duct which is made of e.g. polyester resin.FRANCIS BOURDIN...
What are the advantages of using dowex 50X2-100 ion exchange resin as the acid catalyst as opposed to using aqueous hydrochloric acid or sulfuric acid during an esterification? What are the advantages and disadvantages of petroleum as a source of...
Is this part made of polyropylene? How can I find out and if it is what type of glue can be used to repair the crack? The part is quite expensive and I cannot afford to replace it (I am on disability, a fixed income and 65 year old female and really need to get to my ...