Preparation Of Polymer Nano-microsphere/Graphene Hybrids And Their Application In Rubber

The research of rubber reinforcement theory and novel reinforcing filler for rubber has always been one of the most active fields in rubber chemistry. Graphene(GE) is known as the strongest material by far and it has great application potential in improving the mechanical property of modified polymer materials. In this paper, we solve aggregation of individual GE sheets and polymer nanoparticles themselves by means of preparing polymer nanoparticles /GE hybrids throuth decorating polymer nanoparticles onto GE sheets. And we use the hybrid fillers to reinforce the rubber to prepare excellent comprehensive performance and light weight rubber nanocomposites. The main content that this paper studied inludes:1) Crosslinked polystyrene nanoparticles/reduced graphene oxide hybrids(PS@rGO) were obtained by electrostatic self-assembly process, accompanied with in situ reduction. The structure and morphology of the samples were characterized by XRD, FTIR, Raman and TG analysis. The results show that the GO can be efficiently reduced by in situ reduction method, further having strong π-π interactions with PS nanoparticles. The SEM observations show that the PS is uniformly adsorbed onto the surface of rGO sheets, effectively preventing the stack of rGO sheets.2) SBR/PS@rGO nanocomposites were prepared by using direct mixing method. SEM, RPA and Mooney-Rivlin equation further confirm that PS@rGO hybrids can uniformly disperse into the matrix, forming a 3D hybrid filler network in rubber matrix, also, a strong interfacial interaction exists between the hybrid fillers and rubber matrix. Such performance can greatly enhance the mechanical performance and abrasion resistance.3) Crossinked methylstyrene-acrylonitrile copolymer(MStAN) nanoparticles/graphene oxide hybrids(MStAN@GO) were prepared Using the Electrostatic Self-assembly. Then XNBR/ MStAN@GO nanocomposites were prepared by using direct mixing method. The structure and morphology of the hybrids were characterized by XRD, FTIR, Raman and TG analysis. The results show that the GO having strong π-π interactions with MStAN nanoparticles. The SEM observations show that the MStAN is uniformly adsorbed onto the surface of GO sheets, effectively preventing the stack of GO sheets. RPA, SEM and DMA further confirm that MStAN@GO hybrids can uniformly disperse into the matrix, forming a 3D hybrid filler network in rubber matrix, also, a strong interfacial interaction exists between the hybrid fillers and rubber matrix. Such performance can greatly enhance the mechanical performance.