The results show that composite coatings of Ni-P-MoS2 have excellent antifriction and antiscuffing properties. The partical concentration of MoS2 and electroplating time have a great effect on its antifriction property.
he structures and properties of the blends, forming from several nylon-6samples with different concentrations of amino end group melt-mixed with maleic anhydride-functionalized EVA, have been studied. The results show that increasing amino end group concentration in nylon-6 will favor the forming of nylon-EVA graft copolymer,diminish EVA particles size and increase markedly the impact toughness.
By the numerical simulation, calculate the distribution of velocity^ temperature and contaminant concentration of air in the room under different modes of air flow organization, and through analysing the outcomes of simulation, draw some conclusions.
The concentration distribution of a CO_2 jet in the wake of a circular cylinder is measured,and the effects of co-flowing air velocity and the diameter of circular cylinder on the concentration distribution of the CO_2 jet are presented.
So we can get the isoconcentration graphs, which show the concentration distribution of tracer directly. According to the graphs, we can carry out the search of the law of diffusion of pollutants and the evaluation of water environmental quality. At the same time, the experiment in this paper also shows the feasibility of pollutant concentration measurement in water body by digital image processing technique.
5. PLIF techniques are successfully developed to visualize and quantify the mean and turbulence characteristics of concentration fields of turbulent round jets in counterflow and coflow ambient. The cross-sectional scalar concentration fields, the characteristic jet width and the centerline dilution along the jet axis are also acquired.