The same basic components PP masterbatch production process and the quality of masterbatch masterbatch composed plays a decisive role! So, for the breeding of four kinds of PP masterbatch process, in the end how much you know? The following small series will take you a comprehensive and thorough understanding of what gave birth to the four kinds of PP masterbatch process!

Eyes wide open, clenched hands, step by step Xiaobian go ~

PP does not contain polar molecules or groups can react with the dye molecule reactive groups, and polypropylene fibers relatively high degree of crystallinity, compact, so very difficult dyeing polypropylene, color fastness is quite poor.

In order to solve difficult to dye polypropylene fibers usually have the following three ways:

1. copolymerization or graft copolymerization method in the polymer into accepting dye molecules polar groups. There is often used a copolymer of acrylic acid, acrylonitrile, vinyl pyridine and the like.

2. After the polypropylene with a small amount of the dye-receiving agents blended extrusion. One approach is to introduce an organometallic compound Ni or A1, Zn; Another approach is to mix a cationic organic nitrogen compounds, such as polyvinyl pyridine and pyrrolidone derivatives. Since this method does not change the fiber structure, without affecting its physical properties, it is a more practical method.

3. Using spinning before coloring. That is the pigment added to the polymer prior to melt spinning to go. The method also includes a melt masterbatch coloring and coloring.

Currently, the most commonly used abroad or polypropylene masterbatch coloring coloring process.

Wow Kaka ~ prelude some long it! Rushed into the topic!

Several PP masterbatch production methods

Pigment powder masterbatch production method
Pigment powder masterbatch production process shown in Figure 1.

The production unit with a lower investment, used mostly for inexpensive pigment, so low cost. This production method in some small masterbatch manufacturers in more common. But the weakness of the law is not fully refined pigment processing, the pigment particle size below standard, so the resulting masterbatch can be applied only in the pigment particle size less demanding fields such as injection molding. In the production of polypropylene fibers, such as silk carpet it can only be applied to part of coarse denier fibers.

Pretreatment color masterbatch production method
This pigment masterbatch production must be used to refine the pigment and surface treatment, and the obtained masterbatch in order to have good internal quality. The advantage of this production method is simple process, shown in Figure 2. Less equipment fixed investment, the disadvantage is not comprehensive choice of pigment. Production flexibility is limited, and the particle size of the pigment can not control.

A typical application of the law of foreign manufacturers have dainichiseika Hirst and West Germany. Domestic manufacturers are also many masterbatch using this method of production, more typically Xinhui fiber masterbatch plant. The plant's production process simpler: the dispersant, pre-dispersed pigments and resins while blending into the mixer, the twin-screw extruder into masterbatches.

Pigment dispersion refinement masterbatch production method (wet process)
The production method is the use of mechanical polishing aqueous phase with the surfactant in the binding of the pigment particle size reduction method, and then through a certain chemical treatment of the pigment from the aqueous phase to the oil phase and not in conjunction with a dispersing agent is formed Condensation occurs again treated pigment, and then blended with the resin granulated by a certain percentage in order to obtain masterbatch. Its production process shown in Figure 3.

The disadvantage of this method is less fixed investment in production equipment, high operating requirements; significant advantage is the ability to control the particle size of the pigment, the pigment can be selected and allowed to dry after treatment to get excellent color strength, opacity and other optical properties, At the same time it can be applied to the size requirements of high denier polypropylene pigment production, that can produce high-quality masterbatch.

Application of the production process overseas manufacturers is typical Swiss company Ciba-Geigy. Domestic refining process currently used pigment masterbatch production method of the manufacturers of Beijing Institute of Yanshan Petrochemical Company resin application, the introduction of the Ciba-Geigy technologies; another is the second chemical dye factory in Shanghai, the plant uses a kneading method , its production process shown in Figure 4.

The development direction of polypropylene - is fine denier polypropylene production, the corresponding pigment particle size of masterbatch made a higher demand. Because China and abroad compared to the pigment industry is still relatively backward, they lack the necessary means of paint pretreatment, so wet masterbatch production method is a method of producing masterbatch suitable for China's national conditions.

New Materials Co., Ltd. Zhejiang Jin Choi as a masterbatch 16 years focused research and development, production enterprises, covering 63 acres of golden color, a plant 25000m², two plant about 20000m², a total of eight. Has thirty imported production lines, can produce twenty thousand tons masterbatch. Welcome to call, consult masterbatch product details Oh!