2. Gray yellow+slate green, yellow light red+dark green+chestnut, neutral gray+crimson, green green+coral.
3. Yellow-green+strong red, orange-amber+purple, yellow-green+strong cyan, amber+purple, dark yellow-green+cyan.
4. Olive green+brown, slate green+dark orange yellow, copper color+black, bean green+brown, grayish yellow+ochre.
5. Violet+ripe gray, green with green flavor+thick gold, light orange+light green, light olive green+blue.
6. Buffalo+red wine, dark green+grayish yellow
Color matching is based on the three basic colors of red, yellow and blue, with colors that are pleasing to the eye, meet the color difference requirements of color cards, are economical, and do not change color during processing and use.
In addition, plastic coloring can also give plastics a variety of functions, such as improving the light resistance and weather resistance of plastics; Give plastics some special functions, such as conductivity and antistatic property; Different colors of plastic film have the functions of weeding, insect prevention and seedling raising. That is, some application requirements can be realized by color matching and coloring.
Extended data:
Coloring process of color matching:
1. Toner is directly mixed with plastic resin and sent to the next product molding process, which has short process and low cost, but poor working environment, poor coloring power, poor coloring uniformity and quality stability.
2. Color master batch method is to make colorant, carrier resin, dispersant and other additives into particles with a certain concentration of colorant. When the product is molded, a certain amount of masterbatch is added according to the coloring requirements, so that the product contains the required coloring dosage and meets the coloring requirements.
3. Color masterbatch can be classified according to the resin to be colored, such as ABS color masterbatch, PC color masterbatch and PP color masterbatch. It can also be classified according to the process of adding colored resin. The masterbatch can be divided into three categories: injection molding, film blowing and extrusion. Due to the pretreatment of pigment, the color master batch has higher coloring power, less dosage, stable quality, convenient transportation, storage and use, and greatly reduces environmental pollution.
4. Dispersants remove surface air by wetting and penetrating pigments, and disperse aggregates and agglomerates into fine, stable and uniform particles, which will not agglomerate during processing. The commonly used dispersant is low molecular weight polyethylene wax;
5. For organic pigments and carbon black which are difficult to disperse, the low molecular weight polyethylene wax synthesized by EVA wax or oxidized polyethylene wax is quite different from the low molecular weight polyethylene wax prepared by polyethylene pyrolysis.
6. Other additives include coupling agents, antioxidants, light stabilizers, antistatic agents, fillers, etc. And the dosage depends on the requirements and varieties, which is called multifunctional masterbatch. If brightener is added, it is beneficial to demould the molded product and improve the surface brightness of the product.
7. The performance indexes of color masterbatch include color difference, whiteness, yellowness, yellowness, thermal stability, oxygen index and melt flow rate. Of course, the fineness, migration, chemical resistance and toxicity of pigment are also related to the performance of color masterbatch, and some indexes are very important in special applications, such as the fineness of filter press value (DF value) of fiber-grade color masterbatch.
Baidu encyclopedia-color matching