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Integrated rubber SIBR belongs to a new generation of SSBR. It has low rolling resistance and high-temperature wear resistance, it is mainly applied in the manufacture of a tire tread rubber. At the same time, it also has excellent physical and mechanical properties and dynamic mechanical properties, can be used as lubricating oil additives, asphalt modifier, but SIBR small polar, surface adhesion, stain resistance, low temperature performance is not satisfactory supple deficiencies that limit its application, especially in the aerospace and military supplies for rubber demanding field. Modified chain end functionalized SIBR order to compensate for these deficiencies in the SIBR can be used to meet the requirements of some special properties. Firstly, n-butyl lithium as initiator, tetramethylethylenediamine (TMEDA) as the structural modifier Synthesis linear random SIBR, and as a modified substrate, by N, N-dimethyl-amino-benzaldehyde aniline (DMABA) propylene oxide, and 1,3,5 - tris (trifluoromethyl-propyl) cyclotrisiloxane (D3F) the capped functionalized first synthesis of the end of the chain amino functionalized SIBR, the end of the chain hydroxyl functional SIBR and fluoro-silicone base the SIBR; using Nuclear magnetic resonance spectrum analysis, infrared spectroscopy and chemical titration method or the like means to verify the presence of the functional groups of the polymer chain end, and the functionalizing reaction process was carried out study to determine the optimum conditions of synthesis with different functional groups SIBR; through dynamic mechanical analyzer, contact angle analyzer, electronic tensile testing machine vulcanized rubber and metal bonding performance prepared SIBR the dynamic mechanical properties of the surface pro- water properties, mechanical properties and surface adhesion properties were tested. The results showed that: the chain terminal amino group, hydroxy group-modified the SIBR molecular role enhanced increase in the storage modulus and loss modulus, tan delta value,; tensile strength increases significantly, the hydrophilic surface properties and surface adhesive properties improved. The fluorosilicone yl the SIBR surface rendering strong hydrophobic properties, but the surface contact angle increases with increasing amount of fluorosilicone access; fluoro-silicone-modified poly (methyl trifluoropropyl) siloxane ( PMTFPS) characteristic peaks appear in -75 ° C, and with the increase in soft segment PMTFPS content, tan delta increases, corresponding to about 0 ℃ the SIBR relative tanδ reduce; within the range of -75 ° C to 0 ° C. This temperature range of storage modulus decreased; while the increase in loss modulus at -75 ° C or about domain loss modulus temperature of about 0 ° C is reduced, the opposite trend was two regions; fluoro-silicone-modified, decreased mechanical properties, the maximum tensile The tensile strength and elongation are reduced, when amount of PMTFPS access to about the SIBR 50%, the maximum tensile strength of 11.8MPa, the elongation at break of 200% or less.
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