Study On The Preparation Technique Of Dual Phase Nano-Filler And The Structure And Properties Of SSBR/Dual Phase Nano-Filler Composite Material

The research of the thesis can be divided into four parts:Part one. The cheap raw materials, such as soluble glass, HCl, MAA were used as reactant. A aggregation SiO2 powder with network-type was prepared by controlling the ratio of material, temperature, time, mixing speed, which has smaller size than that of products sold in the market. A new suitable and commercial technology for producing SiO2 made from acid system with HCl was supported. Part Two. The SiO2 made in Laborary and sold in market were characterized by chemical structure, morphological character and reinforcement for S-SBR. The physical character, processability and dynamic mechanic property of synthetic nanometer SiO2 were investigated and compared with that of precipitated SiO2.Part Three. The influence of HCl concentration, reaction temperature, aging timc,SiO2 content percent on chemical structure,doping state of dual phase filler and it's reinforcement for SSBR were studied. A preparation technology was assured. Precursor solution of SiO2 powder was prepared firstly, carbon N330 was used as base, the reactive temperature was controlled at 70℃, the final pH value was limited around 7.5, aging time was 40-50min, the content of SiO2 was 5%~10%. At last, a two-state nanometer filler, carbon- SiO2 was manufactured successfully.Part Four. Various filler weights ration of carbon and SiO2, lab-made two-state nanometer filler, were used for comparing the reinforcement for S-SBR. It was shown that homemade two-state nanometer filler has better reinforcements and wear-resisting property than that of N330, dynamic mechanical property is similar with N330.