Graphene oxide(GO)has proven to be an effective reinfor-cing filler for rubber[1].GO has superior mechanical properties,barrier properties,large specific surface area and abundant oxygen-containing functional groups[2...Graphene oxide(GO)has proven to be an effective reinfor-cing filler for rubber[1].GO has superior mechanical properties,barrier properties,large specific surface area and abundant oxygen-containing functional groups[2].However,the change in the oxidation degree of GO has a great effect on its chemical properties,the interaction between GO and the matrix,and the dispersion uniformity in the rubber matrix,which has a great effect on the reinforcement of rubber[3].展开更多
Benzoxazine resin,being a new type of phenolic resin deve-loped to overcome the shortcomings of traditional phenolic resins,has been synthesized from phenol,formaldehyde and amine,and does not require solvent eliminat...Benzoxazine resin,being a new type of phenolic resin deve-loped to overcome the shortcomings of traditional phenolic resins,has been synthesized from phenol,formaldehyde and amine,and does not require solvent elimination or monomer purification to obtain a relatively clean precursor.It has potential application in the field of aerospace due to its low expansion coefficient,high weather resistance,high carbon yield,good mechanical strength,and excellent ablation resistance[1].It can be mixed with various other resins or polymers to produce new resins with a broad range of applications[2-3].展开更多
In this study,the effect of reduced graphene oxide(RGO)on the electrical conductivity and piezoresistivity of natural rubber(NR)/graphene foam(GF)composites was investigated.The RGO suspension(2 g/L)used was prepared ...In this study,the effect of reduced graphene oxide(RGO)on the electrical conductivity and piezoresistivity of natural rubber(NR)/graphene foam(GF)composites was investigated.The RGO suspension(2 g/L)used was prepared via modified Hummers method,and the washed polyurethane(PU)sponges(3 mm×7 mm×50 mm)were immersed in it and then dried in an oven at 80℃.The immersion/drying process could be repeated(1-4 times)to prepare RGO@PU sponges with different RGO dipping times.Then the dried RGO@PU sponges were moved to the ethanol flame(inner flame)for tens of seconds to obtain the GF.展开更多
基金Supported by Shanghai Aerospace Science and Technology Innovation Fund Project (SAST 2022-097)。
文摘Graphene oxide(GO)has proven to be an effective reinfor-cing filler for rubber[1].GO has superior mechanical properties,barrier properties,large specific surface area and abundant oxygen-containing functional groups[2].However,the change in the oxidation degree of GO has a great effect on its chemical properties,the interaction between GO and the matrix,and the dispersion uniformity in the rubber matrix,which has a great effect on the reinforcement of rubber[3].
基金Supported by Shanghai Aerospace Science and Technology Innovation Fund Project (SAST 2022-097)。
文摘Benzoxazine resin,being a new type of phenolic resin deve-loped to overcome the shortcomings of traditional phenolic resins,has been synthesized from phenol,formaldehyde and amine,and does not require solvent elimination or monomer purification to obtain a relatively clean precursor.It has potential application in the field of aerospace due to its low expansion coefficient,high weather resistance,high carbon yield,good mechanical strength,and excellent ablation resistance[1].It can be mixed with various other resins or polymers to produce new resins with a broad range of applications[2-3].
基金Supported by Aeronautical Science Foundation of China(2016ZF9009),the Priority Academic Program Development of Jiangsu Higher Education Institutions.
文摘In this study,the effect of reduced graphene oxide(RGO)on the electrical conductivity and piezoresistivity of natural rubber(NR)/graphene foam(GF)composites was investigated.The RGO suspension(2 g/L)used was prepared via modified Hummers method,and the washed polyurethane(PU)sponges(3 mm×7 mm×50 mm)were immersed in it and then dried in an oven at 80℃.The immersion/drying process could be repeated(1-4 times)to prepare RGO@PU sponges with different RGO dipping times.Then the dried RGO@PU sponges were moved to the ethanol flame(inner flame)for tens of seconds to obtain the GF.
