Processing Of Colored Lacquer And Its Effect On The Performance Of Paint Film

The lacquer is a milky white liquid that flows from the phloem milk of the lacquer tree.It is a process that turns brilliant when exposed to air.The lacquer has good adhesion and willfulness and was used as an adhesive in ancient times.After being cured,the lacquer has excellent properties such as high hardness,high gloss,high temperature resistance,corrosion resistance,and resistance to soil resistance.The lacquer was widely used in ancient times as a decorative paint,and reached the peak in the Qin and Han Dynasties and Sui and Tang dynasties.The lacquer coating has been used until now due to its unique properties.Today’s refined paints are widely used in lacquerware,lacquer painting,and restoration of ancient artifacts.This study was conducted by controlling the conditions during the refining of lacquer,such as stirring time and infrared irradiation time.The optimization of the lacquer refining process and the optimization of the performance of the refined paint film are performed to select the optimum refining process.A systematic study was conducted on the matching of the color paint color matching,and the performance parameters such as surface dry time,hardness,and glossiness of the color-refined paint film were measured.The following research results can be found:1.Different mixing time and infrared irradiation time have a greater impact on the raw paint moisture content,surface dry time,hardness,gloss,viscosity.The viscosity increases with the increase of the stirring time,and the viscosity reaches 600,000 mpa.s at the stirring time of 12 h.In the determination of water content,the water content is inversely proportional to the stirring time and infrared irradiation time.As can be seen from Figure 2-9,the increase of the infrared time during the stirring time(4h,6h,8h,10 h,12h)will decrease the water content.The water content was at the lowest point in the treatment of 12 h of infrared irradiation for 4 h of stirring time.The dry time is gradually reduced with the increase of the stirring time and the infrared irradiation time,showing an inverse trend.As is known from FIGS.2-8,in the process of stirring time of 4 h and 6 h,there is little change in the stemming time.In the treatment of infrared irradiation for 3h at the stirring time of 12 h,the shortest surface drying time was the shortest.In the determination of the film hardness,the film hardness changes with the increase of stirring time and infrared irradiation time,a positive trend.Among them,the film hardness reached 5H in the treatment of 10 h infrared irradiation for 4h and stirring time of 12 h,infrared irradiation for 3 hours and 4h.2.Different colors of the pigment and the ratio of different colors have a greater impact on the dry time,hardness,and gloss of the colored paint film.In the deployment of five colors(silver,permanent yellow,permanent solid orange,indigo blue,and indigo green),the surface dry time will decrease with the increase of the proportion,showing an inverse trend.With the five colors in the ratio of 140%,the dry time is about 2 hours.The gloss performance has reached more than 80/GU,of which the silver and Zhuo oranges are 12% of the blending ratio;the permanent yellow is 140%;the indigo blue and indocyanine green are 1:1 blended.This is better.In the determination of the hardness index,the lower the blending ratio,the higher the hardness of the film.The blending ratio of 0.6 and 0.8 of the medium hardness has reached the level of 5H,but in the deployment ratio of 140%,the hardness is below 3H.It shows that the more pigments are added,the more the hardness of the paint film will be affected.To sum up,the experimental results show that in the refining process,12 h infrared irradiation for 3h is the preferred processing technology for refined lacquer.In the process of color paint blending,the blending ratio of silver and wolfberry orange is1:1.2.Permanent yellow is 1:1.4.Indigo blue and green blue 1:1 of the deployment ratio is the best.