the photolumescence ( pl ) spectrum of modified si nanoparticles was changed since the protective agent had modified the surface states, thus altering the light emission characteristics 奈米矽粉的光激发光光谱因保护剂之包覆,改变其发光机制而改变光谱峰。
surfactants are ubiquitous in natural water . adsorption of surfactants with particles suspended modifies the surface characteristics of solid particles which are very important to coagulation 表面活性剂广泛存在于天然水体中,水中悬浮颗粒表面由于吸附表面活性剂而改变表面性质,从而对水处理中混凝工艺产生影响。
the polarization ratio, p = 0.87, was obtained in this case . the composite film of zinc oxide and copper phthalocyanine ( cupcrn ) was prepared by modifying the surface of zinc oxide thin films with cupcrn 同时,对氧化锌?酞菁铜复合薄膜的荧光性能研究表明,酞菁铜的存在对氧化锌薄膜426nm的荧光有很好的敏化作用,其偏振比为0.89。
so it is required to increase the dispersion property and improve mechanic intensity and synthetic capability . in this paper, stearic acid, silane ( kh-550 ), silane ( kh-570 ) are chosen to modify the surface of sericite 因此,对绢云母进行表面改性,可改善其表面的物化性质,增强其与有机高聚物的相容性,提高其分散性,以提高材料的力学强度及综合性能。
in this thesis, the stearic acid and titanate-coupling agent were used to modify the surface of aragonite whisker . the ir-spectrograph analysis and the suspending-experiment showed that the two ingredients were effective to modify the aragonite whisker, and the titanate-coupling agent was better than stearic acid 红外光谱仪分析和悬浮实验表明二者均能有效地对文石相碳酸钙晶须实行改性,且达到完全改性时钛酸酯用量少于硬酯酸。