Effect Of Composite Reinforcement System On The Properties Of Solvent-Polystyrene-Butadiene Rubber

SSBR is a kind of ideal tread rubber material,which has low rolling resistance and good wet skid resistance.SSBR is similar to other synthetic rubbers,and its mechanical strength and wear resistance are poor.Therefore,researchers have conducted extensive research on the SSBR reinforcement system.For example,the application of single-phase reinforcing filler systems such as carbon black,white carbon black,and biomass materials in SSBR has achieved certain research results.In addition,it was found that the composite reinforcement system composed of two or more fillers with synergistic reinforcement effect to improve the comprehensive performance of rubber composite materials is better than the single-phase filler reinforcement system,in the research process.For the reason,this article uses SSBR as the rubber matrix;The carbon black-white carbon black biphasic particles(CSDPF),CSDPF and lignocellulose(LNC),CSDPF and zinc methacrylate(ZDMA),and other few reinforced composite systems were selected for research.Explore the synergistic reinforcement effect in the composite reinforcement system and the effect of the composite reinforcement system on the SSBR performance.The result is as follows:1?Precipitation method was used to prepare CSDPF,and the effect of CSDPF filling fraction on the properties of rubber composites was studied.The result shows,with the increase of CSDPF content,the mechanical properties,wear resistance,apparent crosslinking degree,storage modulus and loss factor of rubber composites have increased.Compared with the rubber compound with 40phr CSDPF,when the CSDPF is 70 phr,the tensile strength of the rubber composite is increased by 78.1%,the Shore A hardness is increased by 44.4%,the tear strength is increased by 18.2%,and the acryl wear is reduced by 22.7%.2?The surface modification of LNC is carried out by titanate coupling agent,and the modified LNC is added to the rubber composite instead of CSDPF.The research shows,with the increase of LNC,the storage modulus of rubber composites decreases,which improves the dispersion of reinforcing fillers and reduces the loss factor.But,with the increase of LNC,the mechanical properties,abrasion resistance and apparent cross-linking degree of rubber composites have decreased.Compared with the composite material without LNC addition,the rubber composite material with Lphr loading of 10 phr has better filler dispersibility,the tensile strength is reduced by 5.1%,and the acryl wear is increased by 25.9%.3?LNC/GO composite filler was modified by combining titanate coupling agent with LNC and graphene oxide(GO).LNC/GO composite filler was used to partially replace CSDPF as reinforcing filler.Study the effect of LNC/GO composite filler on the properties of rubber composites.The research shows,compared with rubber composites without GO addition,rubber composites with GO addition have improved mechanical properties,wear resistance and storage modulus.Especially when the LNC filling ratio is higher,the performance improvement is more obvious.When the amount of LNC filler is 20 phr,the tensile strength of the composite material with GO added is 20.5%higher than that of the composite material without GO addition,and the wear of Akron is reduced by 19.1%.4?ZDMA is an unsaturated carboxylate,which has good mechanical properties.Adding it to rubber can effectively improve the mechanical properties of rubber composites.The research shows,as the ZDMA content continues to increase,the tensile strength of the rubber composite first increases and then decreases,and the elongation at break has been increasing.When the ZDMA content is 15phr,the tensile strength reaches a maximum of 13.11MPa.Judging from the micro-morphology of the tensile section of the rubber composite,ZDMA did undergo self-polymerization under the action of DCP and formed a cross network in the rubber matrix.Similar to the thermal stability of rubber composites and the temperature scan of RPA,the introduction of ZDMA improves the thermal stability of rubber composites and can also have better elasticity at high temperatures.The reinforcing effect of the rubber reinforcing filler can be understood as the interaction between the surface of the filler particles and the rubber matrix,and the interaction strength depends on the bonding strength and bonding characteristics between them.By modifying the biomass material LNC with a titanate coupling agent,the interface binding force between the surface of the filler particles and the rubber matrix is changed,and it is used as a reinforcing filler to partially replace the CSDPF to reinforce the SSBR.Provide the possibility to replace fossil energy with bio-environmental materials in the rubber field.Combine the modification of LNC/GO and CSDPF to build a composite reinforcement system to exert the synergistic reinforcement effect of the combination between LNC/GO,to open up new methods for improving the comprehensive performance of rubber composite materials.ZDMA partially replaced CSDPF to construct a new reinforcement system.It was found that the formation of a polymer interpenetrating network reinforcement structure in which ionic bonds and cross-linking bonds coexist in rubber can significantly improve the mechanical properties and modulus of rubber composites.Lay the foundation for exploring new type of vulcanization system and reinforcing structure.Figure[66]Table[18]References[92]...