A novel fullerene-styrene-maleic anhydride copolymer is reported. TEM analyses shows it is water- soluble nanoball of average diameter of about 83 nm. The tribological behavior is evaluated by foul-ball machine. It w...A novel fullerene-styrene-maleic anhydride copolymer is reported. TEM analyses shows it is water- soluble nanoball of average diameter of about 83 nm. The tribological behavior is evaluated by foul-ball machine. It was found that addition of fullerene copolymer to base stock (2%triethanolamine aqueous solution)resulted in a raise in load-carrying ability(F value)from 130 N to maximum 480 N, and a reduction in coefficient of friction from 0.235 to minimum 0. 063. SEM analyses indicates that the wear scare obtained with fullerene copolymer exhibited mild scratches, while sharp grooving and serious pull-out phenomnon were observed in the presence of base stock without additive .The improvements in friction, wear and load-carrying capacity are probably due to the presence of fullerene copolymer nanoballs, which may act as molecule ball bearings, which in turn lead to elastic rolling lubrication.展开更多
According to the recent development trend and need of the frictionbrake material, the flake rein- forced friction brake material hasbeen made out by adjust- ing the recipe and techniques. Thetwo-dimensional flake verm...According to the recent development trend and need of the frictionbrake material, the flake rein- forced friction brake material hasbeen made out by adjust- ing the recipe and techniques. Thetwo-dimensional flake vermiculite is selected as the reinforcedstuffing of the ma- terial; the modified resin is used as the basalbed of the material. The tests manifest that the properties ofmechan- ics are high, the friction coefficients are suitable andstabel, and especially in high temperatures the wear is low. It is anexcellent friction brake material.展开更多
基金This project is supported by National Natural Science Foundation of China (29674010) and State Key Lab of Plastic Forming Simula
文摘A novel fullerene-styrene-maleic anhydride copolymer is reported. TEM analyses shows it is water- soluble nanoball of average diameter of about 83 nm. The tribological behavior is evaluated by foul-ball machine. It was found that addition of fullerene copolymer to base stock (2%triethanolamine aqueous solution)resulted in a raise in load-carrying ability(F value)from 130 N to maximum 480 N, and a reduction in coefficient of friction from 0.235 to minimum 0. 063. SEM analyses indicates that the wear scare obtained with fullerene copolymer exhibited mild scratches, while sharp grooving and serious pull-out phenomnon were observed in the presence of base stock without additive .The improvements in friction, wear and load-carrying capacity are probably due to the presence of fullerene copolymer nanoballs, which may act as molecule ball bearings, which in turn lead to elastic rolling lubrication.
文摘According to the recent development trend and need of the frictionbrake material, the flake rein- forced friction brake material hasbeen made out by adjust- ing the recipe and techniques. Thetwo-dimensional flake vermiculite is selected as the reinforcedstuffing of the ma- terial; the modified resin is used as the basalbed of the material. The tests manifest that the properties ofmechan- ics are high, the friction coefficients are suitable andstabel, and especially in high temperatures the wear is low. It is anexcellent friction brake material.
