Properties of water-borne coating incorporate with nanoclay

The Wood and Biofiber International Conference 2017

轻工业生物科学

Anwar, U.M.K.^1 ; Alia, S.Y.^2 ; Tumirah, K.^1 ; Hamdan, H.^1 ; Paridah, M.T.^2

Forest Products Division, Forest Research Institute Malaysia, Selangor, Kepong

52109, Malaysia^1

Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia, Serdang, Selangor

43400, Malaysia^2

关键词: Adhesion properties;    Dispersion process;    High speed rotation;    Mechanical requirements;    Properties of coatings;    Scratch resistant;    Solvent-based coatings;    Water-based coating;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/368/1/012026/pdf
DOI  :  10.1088/1757-899X/368/1/012026

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Water-borne coatings, as well as other coating options, are having advantages and disadvantages besides having different mechanical properties from those of the conventional solvent based coatings. A nanoparticle such as nanoclay (NC) has found its applicability in coatings to meet the mechanical requirements. In this study, a special focus has been given in order to improve the properties of water-borne coating using NC. The optimum percentage of NC mixed into water-borne coating was determined. The samples were prepared by dispersing 2 % of NC in water-borne coating. Both of it were mixed by using homogenizer for a certain duration using high speed rotation. The dispersion process was then repeated for 4 %, 6 %, 8 % and 10 % of NC loading. Whilst water-based coating without NC was used as control for comparison purposed. Effect of using NC on the mechanical properties of coatings on wood such as adhesion (ISO 2409:2007 (E) (BS EN 2007)), impact test (BS3962:Part6 1980 (BS 1980) scratch resistant (ISO 1518-1:2011 (BS EN 2011)) and abrasion (ASTM D 4060-14) were investigated. For adhesion properties, no detectable failure was observed for nanocoating with 2 %, 4 % and 6 % of NC. However, NC 8 % and NC 10 % showed a little detachment, indicating poorer adhesion quality for these samples. There are significant differences for impact and abrasion tests but insignificant for scratch test. It was found that the increasing amount of NC percentage would improve the mechanical properties of water based coating until a certain limit.