片层钠基蒙脱土调控炭黑对天然橡胶/丁苯橡胶纳米复合材料性能的影响

Natural rubber（NR）/lamellar sodium-based montmorillonite（Na-MMT），styrene-butadiene rubber（SBR）/Na-MMT and NR/SBR/Na-MMT masterbatches were prepared by emulsion blending method，then the corresponding NR/SBR/Na-MMT nanocomposites were prepared，and the effect of Na-MMT on the microscopic morphology，physical properties and wear resistance of the NR/SBR/Na-MMT nanocomposites was investigated. The results showed that the dispersion of Na-MMT in the NR/SBR/Na-MMT nanocomposites prepared by using the NR/Na-MMT masterbatch was the best，and the proportion of Na-MMT in the exfoliated state was the largest，the dispersion of carbon black was also obviously improved，and the lamellar Na-MMT could regulate the segregation behavior of carbon black in the NR/SBR/Na-MMT nanocomposites to a certain extent. As a result，the tensile strength，stress at constant elongation and elongation at break of the NR/SBR/SBR/Na-MMT nanocomposites were the largest，the Akron abrasion was the smallest（0. 177 cm³），and the grooves on the worn surface was shallowest，showing the best wear resistance.