| HYMANTOPBON to tell you how to choose black masterbatch | |
| Release time：2016/9/24 | |
1, black masterbatch is made of resin and high pigment carbon black production, carbon black concentration reached 40%, blackness and brightness is relatively high, good heat resistance, resin masterbatch and fusion, product surface does not stratification. In order to achieve a stable color masterbatch dispersion, must use high levels of shear Luo machine to mixed with carbon black, with sufficient strength, the mixer can be completely mixed together the basic resin and carbon black. The use of carbon black types also affect the dispersion of carbon black, the smaller the particle dispersion, the more difficult it is to. For example, the film in addition to carbon black dispersion poor lack of beauty, significantly reduces the performance of black film anti weathering. If the color dispersion is too bad, will lead to broken fiber, production downtime. 2, Black Masterbatch color of light and shade degree in the market with different kinds of carbon black masterbatch for coloring, different color brightness prices also have great difference, ranging from the size of the particles of carbon black has a different background and color, large particles of carbon black is relatively low. Such as large particles of carbon black is in the garbage bag film production, small particles of carbon black used in televisions, computers, mobile phone shell, the external tube. Another characteristic is the low transparent small particles of carbon black. 3,One of the main features of black masterbatch stability is stable proportion of carbon black. If the percentage of carbon black is fluctuating, so need the number of molten masterbatch is not the same, to the production of products of the same hue could not. 4, black masterbatch if containing pollutants or other infusible polymers, will lead to some unpredictable, to constraint the trouble, and ultimately consumer waste time and raw materials. It can be used to produce high quality base resin masterbatch, masterbatch has good compatibility in the melting process. 5, black masterbatch can not flow to die casting materials even with good dispersion and effect of production will also not ideal. If the flow is not good, the trouble in the mold cycle time and the appearance of processing. If the dispersion and rheological properties, some end users will by increasing the dilution ratio make up, but this approach will only increase in the cost of the masterbatch using. 6, the coverage of black masterbatch for scrap or regenerated polymer masterbatch, this factor is particularly important. Black is to cover other colors in the waste. Large particles of carbon black coloring ability is bad, is not easy to be covered by all other colors in the lower. As a result, only get off color. In the melting process, correctly first choice has high tinting strength of carbon black to cover the existing color ability is called coverage. |
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