1980-06-01

Effects of Mixtures of Gasoline With Methanol and With Ethanol on Automotive Elastomers 800786

Sixteen automotive elastomers were investigated in the methanol/gasoline system. The results show that although few elastomers are affected drastically by pure gasoline (e.g., natural rubber) and few by the pure methanol (e.g., Viton), most of the elastomers are severely affected by mixtures of the gasoline and methanol rather than the pure components. Results on the ethanol/gasoline system are similar to those of methanol except that the ethanol mixtures have slightly less severe effects. Only in the case of Viton a greatly reduced effect in the ethanol system was observed.In comparing the results of the different elastomers it was found that several of them swell less and retain more of the tensile strength after aging in alcohol/gasoline mixtures than nitrile. These elastomers include fluorocarbon elastomers (Viton), fluorosilicone, polysulfide, F-70A polyether, polyepichlorohydrin homopolymer, and polyester urethane.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: Purchase more aerospace standards and aerospace material specifications and save! AeroPaks off a customized subscription plan that lets you pay for just the documents that you need, when you need them.
X