The project of water ink pen, whiteboard from Roselle flower and Mangosteen
objective is to produce ink whiteboard pen from Roselle flower and Mangosteen
.There are conducted as follows. Study on extraction methods of Roselle flower color and the pea flowers. Examine the solvent can be used to extract the color and can be removed easily. Then the application of Roselle flower and 30 40 mangosteen,,50 grams to bite with alcohol 30 20,,10 g, respectively, for 2 week. The solution to a drop of ink pen white board. By changing the synthetic fibers into cotton rods instead. Write on the whiteboard, tested By using criteria to measure the intensity of the shades of color from the color bands.It is found that the ratio of Roselle flower ink solution on alcohol and the alcohol is 40: mangosteen20 intensity and clean all the most simple, followed by 50 ratio: 10 30: and 30 respectively
.
การแปล กรุณารอสักครู่..