Dispersion of particles in the coatings characterized by laser scanning confocal micrscopy(LSCM) I:Vertical dispersion of particles in the coatings and the weathering property studied by orthogonal analysis method of LSCM  

作　　者：HAN Charles C. SUNG Li-Piin CLERICI Cyril 

机构地区：[1]State Key Laboratory of Polymer Physics and Chemistry,Institute of Chemistry,Chinese Academy of Sciences [2]Polymeric Materials Group,Building and Fire Research Laboratory,National Institute of Standards and Technology,Gaithersburg,MD 200899,USA

出　　处：《Science China(Technological Sciences)》2010年第8期2247-2251,共5页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.20944004,50943026);the Open Research Program of the Key Laboratory of Rubber-Plastic(QUST),the Ministry of Education of China(Grant No.0805021);the PhD Research Program of QUST(Grant No.0022200)

摘　　要：Two kinds of TiO₂ filled epoxy coatings were designed and prepared to obtain pigments with different dispersion degrees of TiO₂ particles.Laser scanning confocal microscope（LSCM）was used to investigate both the horizontal and vertical distributions of TiO₂ particles in the coatings.The results indicated that TiO₂ in the two samples shared considerable similarity in horizental dispersion,but exhibited great difference in vertical dispersion.TiO₂ showed uniform vertical distribution in disp coating,wheras a gap about 1.1μm was found in the non-disp coating,which significantly influenced the surface optical properties of the coatings during weathering.Based on the confocal data,the model of dispersion of pigments in the coatings was proposed and the change of surface properties during weathering was predicted:the surface optical properties showed an initial decrease followed by a subsequent increase,which was in good agreement with the weathering data.

关 键 词：laser scanning CONFOCAL microscope(LSCM) TiO 2 epoxy coatings VERTICAL DISPERSION of PARTICLES 

分 类 号：TQ630.72[化学工程—精细化工]