The effect of adding zinc oxide nanoparticles on color change and adhesion strength of polyurethane coating on wood surface

تحقیقات علوم چوب و کاغذ ایران

Saeed Khojasteh Khosro¹  Morteza Ganjaei sari²  Mohammad Ghofrani³ 

[1] Department of Wood Science and Technology, Faculty of Civil Engineering, Shahid Rajaee Teacher Training University;استادیار، گروه نانو مواد، پژوهشگاه علوم و فناوری رنگ، تهران;دانشیار، گروه علوم و تکنولوژی صنایع چوب، دانشکده مهندسی عمران، دانشگاه تربیت دبیر شهید رجایی، تهران;

关键词: Zinc oxide nanoparticles;    Polyurethane clear coat;    Elm wood species;    Adhesion strength of coating;    Color change;    Transmission electron microscopy (TEM);   

DOI  :  10.22092/ijwpr.2015.101482

来源: DOAJ

【 摘 要 】

In this study the effect of adding zinc oxide nanoparticles (ZnO) on color change and adhesion strength of polyurethane clear coat in Elm wood species (Ulmus glabra) investigated. ZnO nanoparticles with concentration of 0, 0.25, 0.50, 1, 1.50 and 2 wt% were dispersed in coating. TEM (Transmission electron microscopy) images were used for investigate the dispersion of nanoparticles in coatings matrix. Results of investigate the dispersion of nanoparticles in polyurethane coating indicated that the best dispersion of nanoparticles obtained in coating with 1 wt% nano. Increasing concentration of nanoparticles to 2 wt%, reduced dispersion of nanoparticles and aggregates of nanoparticles observed in coating. Investigation adhesion strength of coating showed that the highest value of adhesion was in nanocomposite coating with 1 wt% nano but increasing nanoparticles more than this content, had negative effect on coating adhesion. Results also revealed that adding ZnO nanoparticles, changed color of samples coated with nanocomposite coating but it was not significant in low content of nanoparticles.

【 授权许可】

Unknown