A kind of modifier was synthesized to modify the surface of nanometer calcium carbonate （abbreviated as nano-CaCO3）, which is used in architectural coatings. The modification technology of the nano-CaCO3 was studied...A kind of modifier was synthesized to modify the surface of nanometer calcium carbonate （abbreviated as nano-CaCO3）, which is used in architectural coatings. The modification technology of the nano-CaCO3 was studied through orthogonal experimental methods. The factors studied were rotation speed, modifier dosage, emulsification temperature, emulsification time and heat aging time after emulsification. Optimized conditions for modification of the surface were： rotation speed 16000 r/min; modifier dosage 3%; emulsification temperature 75 ℃; emulsification time 60 min and aging time 40 min. The modified nano-CaCO3 was also studied by size-distribution measurements, transmission electron microscopy, infrared spectroscopy and thermal analysis. The results show that the size distribution of the modified nano-CaCO3 is uniform and that there are chemi-sorption and physi-sorption between the nano-CaCO3 and the modifier. Compared to traditional architectural coatings without nano-CaCO3, the nanometer composite coatings are obviously improved in respect to dirt resistance, scrub resistance, thixotropy, water resistance, alkalinity resistance and aging resistance.展开更多
The traditional costumes-Han fu and Kimono,are also the typical representatives of China and Japan.While costume pattern as a kind of traditional culture,is an essential symbol,reflecting ethnic characteristics and pl...The traditional costumes-Han fu and Kimono,are also the typical representatives of China and Japan.While costume pattern as a kind of traditional culture,is an essential symbol,reflecting ethnic characteristics and playing an important part in costumes.Based on the consultation,analysis and arrangement of literature data,this paper studied on costume patterns of the two countries,carrying out their comparison in the forms,the color and the connotation respectively,and summarizing their own characteristics.It is through the study that we will be able to inherit the traditional patterns and put them into innovation in modern clothing design.展开更多
文摘A kind of modifier was synthesized to modify the surface of nanometer calcium carbonate （abbreviated as nano-CaCO3）, which is used in architectural coatings. The modification technology of the nano-CaCO3 was studied through orthogonal experimental methods. The factors studied were rotation speed, modifier dosage, emulsification temperature, emulsification time and heat aging time after emulsification. Optimized conditions for modification of the surface were： rotation speed 16000 r/min; modifier dosage 3%; emulsification temperature 75 ℃; emulsification time 60 min and aging time 40 min. The modified nano-CaCO3 was also studied by size-distribution measurements, transmission electron microscopy, infrared spectroscopy and thermal analysis. The results show that the size distribution of the modified nano-CaCO3 is uniform and that there are chemi-sorption and physi-sorption between the nano-CaCO3 and the modifier. Compared to traditional architectural coatings without nano-CaCO3, the nanometer composite coatings are obviously improved in respect to dirt resistance, scrub resistance, thixotropy, water resistance, alkalinity resistance and aging resistance.
文摘The traditional costumes-Han fu and Kimono,are also the typical representatives of China and Japan.While costume pattern as a kind of traditional culture,is an essential symbol,reflecting ethnic characteristics and playing an important part in costumes.Based on the consultation,analysis and arrangement of literature data,this paper studied on costume patterns of the two countries,carrying out their comparison in the forms,the color and the connotation respectively,and summarizing their own characteristics.It is through the study that we will be able to inherit the traditional patterns and put them into innovation in modern clothing design.
