Rubber Chemistry and Technology · 1982 · 67 citations · 0 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsComposite MaterialsPolymer AdditivesPolymer PhysicsStrengthening MechanismsFiller MaterialsNatural RubberReinforcement By FillersRubber SwellingSilane CouplingSilane Coupling AgentsSilane Coupling TreatmentVulcanization
Abstract Reinforcement of silica filler in NR in the presence of a silane coupling agent (Si-69), and an additive (TEA) has been analyzed by studies on swelling of the vulcanizate, network structure, technical properties, and scanning electron micrographs. Failure properties in the presence of a coupling agent have been explained on the basis of coupling (polymer-filler) bonds. Improved flex endurance in the presence of TEA has been explained on the basis of good dispersion and better aging resistance of the TEA compounds. Network structure of the rubber during vulcanization undergoes only minor changes on addition of silica filler in the presence of both coupling agent and additive.