The main components of the non-woven masterbatch are generally divided into three parts: a coloring agent, a carrier and a dispersing agent. It is a new coloring product such as plastic enamel and fiber produced in the last century. It is a composite of the yoke prepared by attaching a pigment to a resin.
There are 330 enterprises producing masterbatch in China, of which 300 are plastic-grade masterbatch mills and 30 are fiber-grade masterbatch. These masterbatch production plants are mainly distributed in Fujian, Guangdong, Shandong and Zhejiang. , Jiangsu, Shanghai, Liaoning, Tianjin, Beijing, Hebei and other provinces and cities. In recent years, the production capacity has been seriously overworked, resulting in the widespread shortage of domestic masterbatch industry. In addition to factors such as excessive growth rate of new production equipment and insufficient product orders, the important factor is the domestic color masterbatch product S, and the variety is incomplete. The general-purpose product has a large proportion of sputum, while the high-concentration and high-concentration, multi-functional masterbatch and fine-denier fiber account for a small proportion of the color masterbatch.
In terms of variety development, China's masterbatch manufacturers have developed non-woven masterbatch, black masterbatch, chemical fiber masterbatch, film masterbatch, wire and cable masterbatch, polyolefin masterbatch , PVC color mother , injection molding products with masterbatch. The production process of non-woven color masterbatch is generally divided into four types: washing method, ink method, kneading method and metal soap method. The following is a detailed introduction to the four production processes of non-woven masterbatch.
1. The rinsing method is a method in which the pigment, water and dispersing agent are sanded to make the pigment granules smaller than 1 μm, and the pigment is transferred to the oil phase by the phase transfer method and then dried to prepare the ruthenium masterbatch. The phase inversion requires the use of organic solvents, as well as the corresponding solvent recovery channels.
The process: fine color slurry washing, evaporation concentrated material drying, adding to the artisan extrusion granulation.
2, ink method: As the name suggests is the production of ink color paste in the production of masterbatch. That is, a three-roll mill is used to coat the surface of the pigment with a low molecular protective layer. The ground fine pulp is then mixed with the master resin and then plasticized by a two-roll mill, also known as a two-roll mill, and finally granulated by a single-screw or twin-screw extruder.
The process: the following ingredients are stirred, the coarse pulp, the three-roll mill, the fine color paste, the second smelting and extrusion granulation.
3. The metal soap method is that after the pigment is ground, the particle size reaches about 1 μm, and the soap liquid is added at a certain temperature, so that each pigment layer is evenly wetted by the soap liquid to form a layer of saponified liquid metal salt. After the solution is added, it reacts with the deuterated layer on the surface of the pigment to form a protective layer of magnesium stearate, which makes the finely grounded Yan Yuming not cause flocculation and protection. Must be fine.
4. The kneading method is a method in which the pigment and the oily carrier are blended, and the pigment is oleophilic, and the hydrazine is washed from the aqueous phase into the oil phase by kneading. At the same time, the oily carrier coats the Yanqiqiao, which makes the pigment dispersion stable and prevents the pigment from condensing.