Preparation Of End-Functionalized SSBRs And Study On Their Carbon/Silica Reinforced Rubber

End-functionaled SSBR and filler dispersion of the packing have great significance to the promotion of rubber performance.This master's thesis adopted DMI and 2-(Methylthio)-2-thiazoline to study the end-capping rule. The preparation of carbon black reinforced SSBR by melt-blending, analyzing the influence of functional group (sealing by DMI, DYNASYLANIMEO and CPTMO) on materials. Representate the structure of polymer by GPC, IR, 'H-NMR characterize the performance of rubber by micro-control electronic universal testing machine, DMTA, DSC, RPA, mooney viscosity.On this basis, synthesis of DMI,2-(methylthio)-2-thiazoline, DYNASYLANIMEO, ethylene sulfide and CPTMO modified SSBR firstly and then preparation of silica reinforced SSBR by wet ball-blending. Analyzing the dispersion of the packing and characterize the performance of the materials.The results show that [DMI]/[BuLi] actually join than increased from 0.8 to 1.6, sealing and rate increased from 58.6% to 58.6%. [2-(methylthio)-2-thiazoline]/[BuLi] actually join than increased from 1.3 to 1.8, sealing and rate increased from 60.3% to 61.6%. Research shows that through carbon black reinforced SSBRs, the tensile strength, tear strength, wet resistance and rolling resistance improved significantly when CPTMP modified SSBR. After DMI sealing SSBR, carbon black dispersion strengthened and wet resistance improvement. After DYNASYLANIMEO sealing SSBR, carbon black dispersion strengthened and rolling resistance lower.Silica dispersion under wet ball-blending process is better than melt-blending under the process of dispersion. It is no obvious transform when changing ball-mill time and revolving speed. Compare different silica reinforced rubbers, the process of melt-blending can provide more excellent physical and mechanical properties. Both of the two end-capping reagents are all improved the dispersibility of silica. The wet resistance and rolling resistance improved significantly when DMI modified SSBR and the tensile strength improved significantly when CPTMP modified SSBR. The reation between the end of the silica oxygen keys of CPTMO and the hydroxyls on silica can improve the dispersibility of silica and combination property of material.