When color matching, the amount of pigment added is very little, and the pigment is used directly, the error is large and the dispersion is poor, which may affect the final result of color matching. In the test, yellow, phthalocyanine pigments were added to three carbon black qualified base material, made with 1} color concentration of color, this error is extremely small, good dispersion. When the color sheet is prepared, the absolute accuracy of the pigments and materials should be ensured, and the cleaning of the equipment and the equipment should be ensured. Add the pigment slowly, and turn the material through three to five times and then turn it into 0. 5mm. Then put it in a clean container and put it in the spare.
2, color matching
A certain amount of material is prepared according to the base material formula, and it is put into the high speed kneading machine. The kneading material is put into the clean container. Weigh a certain amount of material into two roll mill heating in the plasticizing, the special carbon black yellow, phthalocyanine green, the amount of the amount of color conversion, and then according to the proportion of customers. In order to add color accuracy, color must be evenly dispersed, generally thin through three times, the triangle bag, the pillow bag alternately. Add color, add color to carefully observe the effect of colour change trend, and then changing the concentration of pigments, through the observation we found that deep yellow, black, green is relatively shallow, namely re feeding, increase the amount of phthalocyanine green yellow, and reduce the amount of the carbon black, so far to little aberration at this time, 11 special 36. phthalocyanine green abalone, yellow 5g, black 46g.
3, the contrast of the sample and the adjustment of its color
The sample into the rubber vulcanizing machine in heating and pressurizing and keep a certain time after cooling samples were compared, it was found that the sample is slightly yellow, slightly dark, trace to adjust the color, re compression contrast, color consistent, through the conversion, the pigment is added to the 110g 35. 5g special phthalocyanine green, yellow. Should pay attention to 45. 5G. samples: comparison of carbon black in the natural light in the correct location comparison, otherwise due to spectral insufficiency, improper location of color effect effect. After the sample is cooled completely, the thickness of the sample should be basically the same, and the surface finish should not be very different. Otherwise, the result of color matching is different from reality. A long time gaze should be avoided to prevent eye fatigue and influence the effect of observation.
4. The copy of the sample
After adding the color phthalocyanine blue, special yellow and carbon black into the substrate formula, the products will be pressed and then compared with the samples. It is found that the special material produced by the Christmas tree is identical with the color of the special Christmas tree material used by users. The physical and mechanical properties of the material are tested in accordance with the standard requirements. The heat resistance, light resistance, weatherability and mobility resistance of the material also meet the requirements of the users. A small amount of products have been used by users to conclude that the processing performance of the material is good and the color is the same. We are organizing mass production. The material samples, sample storage, safekeeping, use it for days.
