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How to choose the high quality of black masterbatch?

Categories: Latest NewsStars: 3Stars Visit: - Release time: 2015-08-21 14:12:00
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 Factors in determining the quality of black masterbatch is: dispersion, shade, stability, compatibility, rheological property, covering force.
1, high black masterbatch is made up of resin and pigment carbon black production and become, black carbon concentration of 40%, blackness has a high brightness, good performance of heat-resistant, pigment and resin fusion degree good, the surface of the products will not hierarchical. To achieve a stable color black masterbatch dispersion, high level of shear pads must be used the machine to mix with carbon black, with sufficient strength, the mixer can make the resin carbon black and ground is fully mixed together. The use of carbon black type also influence the dispersion, the smaller the carbon black particles, dispersion, the more difficult. Such as the dispersion of carbon black in thin film in addition to the lack of sense of beauty, obviously reduce the performance of the black film anti weathering. If the poor dispersion of masterbatch, will be broken fibers, causing production shutdown.
2, black masterbatch color shade in the market has a variety of different carbon black can be used for color masterbatch, color brightness is there much of a difference in price, sizes of carbon black particles have different background and chromaticity, large particles of carbon black is relatively lower. Carbon black is suitable for the bag film production, such as large particles small particles of carbon black is suitable for TV, computer, mobile phone shell, external pipe, etc. The other low transparency is also a feature of small particles of carbon black.
3, black masterbatch on the stability of one of the main performance is stable, the proportion of carbon black. If the percentage of carbon black is fluctuating, so need to the number of the molten masterbatch is not the same, to produce the same color of products is also impossible.
4, if contain pollutants in black masterbatch or other causes of molten polymers will lead to some unpredictable, compulsive trouble, finally is a waste of time for consumers and raw materials. But can choose base resin to produce high quality masterbatch, masterbatch in melting process has a good compatibility.
5, black masterbatch cannot flow into the material to be molded in even good dispersion, the effect of production will not ideal. Rheology is bad, if the mold union on cycle time and appearance processing in trouble. If the dispersion and rheology is not high, some end users will be improved through dilution ratios, but this kind of practice will only increase the cost of the use of masterbatch.
6, black masterbatch coverage for waste or recycled polymer masterbatch, this factor is particularly important. The other color black is covered with waste. Large particles of carbon black coloring ability is poorer, difficult to cover all of the other in the color of the lower, the results of the final product only get off color. In the process of melting, correctly select high tinting strength the ability of carbon black to override the existing color is known as a covering force.
Keywords in the article: black masterbatch