Fixing phenomenon which generate adhesion force between metals and vulcanizates on coming to contact both, is explained by two components of initial fixing that fixing strength increases suddenly and latter fixing that successively fixing strength increases gradually. In the initial fixing, the rubber segment chains of the vulcanizates firstly adsorb diffusing up to metal surfaces and the fixing strength is generated because secondary bonding forces form between both. Successively, some chemical reactions occur between the interfaces which came to contact to form chemical bonds and as a result, the fixing strength further incerases. The results show that the initial fixing is physical one, and the latter fixing is chemical one. A fixing factor is classified into three groups of surranding factor which accelerate fixing phenomenon, surface factor which relates directly to the fixing phenomenon, and material factor which works indirectly in the fixing phenomenon. Relation between those fixing factors and the fixing mechanism was discussed in detail. The four principles to prevent fixing were drived from this relation.
View full abstract