Application and development of color masterbatch Color masterbatches are widely used in plastic industry, rubber industry and fiber industry.
01, plastic
The pigment content of plastic masterbatch is usually between 10% and 20%, and when used, it is added to the plastic that needs to be colored in a ratio of 1:10 to 1:20, which can achieve the coloring resin or product with the design pigment concentration. The masterbatch plastic and the colored plastic may be of the same variety or compatible with other plastic varieties.
The masterbatch can be a single color variety or a variety of pigments. The selection of pigments should meet the processing conditions and quality requirements of plastic products. The application of color masterbatch in the field of plastic products is more mature and common, 85% of the coloring agent of plastic products uses color masterbatch, easy to use, there is no dust flying problem of dry powder pigment, and completely solve the shortcomings of color dot and pigment inconsistency caused by poor pigment dispersion.
Polyethylene, polypropylene, polyvinyl chloride, plexiglass, nylon, polycarbonate, celluloid, phenolic plastic, epoxy resin, amine plastic and other varieties, all have corresponding masterbatches.
In the plastics industry, the market demand for masterbatches is concentrated in engineering plastic products (home appliances, automobiles), construction plastic products (pipes, profiles), agricultural film products, plastic packaging products, etc. Household appliances, automobiles, building plastic products industries, etc., have higher requirements for color masterbatches and large amounts, which promote the development of color masterbatches.
02, rubber
The preparation method of rubber masterbatch is similar to that of plastic masterbatch, and the pigments, plasticizers and synthetic resins selected should be the varieties compatible with rubber. Pigments are mainly used as reinforcing agents and colorants in rubber. The black pigment is mainly carbon black; White pigments are zinc oxide, titanium dioxide, calcium carbonate and so on; Other pigments include iron oxide, chromium yellow, ultramarine, chromium oxide green, fast yellow, benzidine yellow, phthalocyanine green, lake red C, dioxazine violet and so on.
Wires, cables, tires are widely used in carbon black, the traditional carbon black is changed to carbon black masterbatch, and its dosage occupies the first position in the colored masterbatch. At present, carbon black enterprises at home and abroad can not completely produce carbon black masterbatch, it is necessary to study the tire carbon black masterbatch to improve its product performance, and the market potential is huge.
When processing rubber, the use of rubber masterbatch can avoid dust flying caused by powder pigments and improve the operating environment. The color masterbatch is easy to disperse evenly, so that the color of rubber products is uniform, and the actual consumption of pigment is reduced.
The amount of rubber coloring pigments is usually between 0.5% and 2%, and the amount of inorganic pigments is slightly more. This kind of processed pigment should be matched with the rubber processing technology and quality to meet the needs of the rubber industry, and pigment companies need to do a lot of application research work to develop and promote this kind of processed pigment varieties.
03, fiber
Fiber stock coloring is when the fiber is drawn, the color masterbatch is directly added to the fiber viscose or fiber resin, so that the pigment is presented in the drawing, which is called the fiber interior coloring.
Compared with the traditional dyeing, the fiber stock solution coloring is directly used for textile after processing resin and color masterbatch into colored fibers, omitting the post-dyeing and finishing process, which has the advantages of small investment, energy saving, no waste and low coloring cost, accounting for about 5% at present.
The pigment for fiber coloring masterbatch requires bright color, good dispersion, good thermal stability, light resistance, solvent resistance, acid and alkali resistance, bleach resistance, insoluble in water, inorganic or organic pigments can be selected.
