This study investigated the effects of aluminum (Al) mass fraction on the performance of an epoxy-lacquer based coating. The conductivity increased and IR emissivity and gloss decreased with increased Al mass fraction. When the Al mass fraction was decreased from 40% to 30%, the adhesion and impact strength of epoxy-lacquer based coatings increased and were grade 1 and 50 Kg⋅cm, respectively. When the Al mass fraction was decreased to 10%, the mechanical properties of epoxy-lacquer based coatings decreased. Potentiodynamic polarization and electrochemical impedance spectroscopy of coatings showed that epoxy-lacquer based coating with 30% Al mass fraction has the best corrosion resistance and the lowest porosity. The epoxy-lacquer based coating with the best stability was that of 30% Al mass fraction. Comparing epoxy-lacquer based coating with polyurethane based coating, the epoxy-lacquer based coating presents not only lower emissivity and gloss but also better mechanical properties and corrosion resistance.

Silica (SiO 2) was used to modify the waterborne ultraviolet (UV) curing wood coatings, and the waterborne UV curing wood coating was prepared by optimizing the process parameters. The mechanical properties of the waterborne UV curing wood coating (hardness, adhesion and impact strength) and gloss were tested. When the SiO 2 content in the waterborne UV curing wood coating was 3%, the waterborne UV curing wood coatings was drying at 40°C for 30 min in the oven firstly, then irradiated with UV lamp for 1 min, the obtained waterborne UV curing wood coating had good hardness, adhesion and impact strength. However, when SiO 2 content of waterborne UV curing wood coating was more than 3%, the mechanical properties decreased. The gloss test showed that the gloss of waterborne UV curing wood coating was elevated with the decreased content of SiO 2. When the SiO 2 content was higher than 3%, the gloss of waterborne UV curing wood coating exhibited matt.

Abstract. The talcum powder was employed for the single modification of waterborne ultraviolet (UV) curing wood coatings, through optimizing process parameters to prepare the waterborne UV curing wood coatings. It was found that when talcum powder content in Waterborne UV curing wood coatings was at 2.0%, the waterborne UV curing wood coatings was dried firstly in 50°C oven for 30 min and then under UV light irradiation for 3 min, the obtained waterborne UV curing wood coating had good hardness, adhesion and impact strength. But when the content of talcum powder was more than 2.0%, the mechanical properties of waterborne UV curing wood decreased. The gloss measurement showed that waterborne UV curing wood coating gloss decreased with the increased talcum powder content, and when the talcum powder contents were more than 2.0%, waterborne UV curing wood coating showed low gloss.