Influence of Silanization Conditions of Filler Based on Clinoptilolite on Its Efficiency in Polymeric Systems

The present paper deals with the modification of the mineral filler based on clinoptilolite by the silanization process and application of prepared modified forms into polymeric materials. Zeolite clinoptilolite is natural aluminosilicate material with the special porous structure belonging to zeolite group. Surface modification of clinoptilolite was performed with 3-(aminopropyl)triethoxysilane. The influence of silanization conditions – time (1, 2 and 3 hours) and temperature (20 °C and 50 °C) on the efficiency of clinoptilolite modification was studied. Prepared modified fillers were mixed into rubber compounds as partial replacement of commonly used filler – carbon black. Influence of prepared fillers on rheoloy and vulcanizing characteristics of rubber compounds and also on physical and mechanical properties, crosslink density and termooxidative ageing of the vulcanizates was studied. Obtained results of measured characteristics of polymeric systems containing filler based on clinoptilolite were compared with the results obtained in the case of reference rubber compound with a commercially used filler – carbon black. Based on the results the influence of silanization conditions of clinoptilolite filler on its efficiency in polymeric systems has been determined.