The main function of polyester masterbatch is coloring, its color and color fastness must meet the user requirements, and its quality must also meet the requirements of polyester spinning and post-processing technology, that is not due to the addition of masterbatch polyester The mechanical and mechanical properties of spinnable and colored fibers. Detection of the masterbatch production plant is on their own product quality has a basic estimate of the user is to provide a scientific basis for the use of masterbatch. The following items should be tested.

1. The color of the polyester masterbatch. For conventional standard color masterbatch such as black, accurate color is the user to determine the spinning dough ratio of the important basis for the authoritarian masterbatch, the color is only a reference, more importantly, is the exact dilution ratio.

2. Polyester masterbatch melting point and softening point. Melting point is not an important characterization of masterbatch quality and its spinnability, but it is an important basis for users to determine the conditions of spinning and drying.

3. Change the temperature (or heat stability). Whether the Masterbatch Can Meet the Important Conditions of Spinning Process.

4.DF value (or △ P curve). Used to determine the overall performance of the masterbatch filter, the value of the user can predict the replacement cycle of spinning components.

5. Appearance of polyester masterbatch. Requires homemade particles uniform, no powder, debris and long particles.

6. Dust density of polyester masterbatch (g / cm³). Stable and accurate, particle size should be the same as the spinning raw material slices as much as possible.

7. Ash. This indicator is mainly used to detect the inorganic salt and mechanical impurities in the masterbatch and has no representation for the coarse particles in the masterbatch and the agglomerated particles in the polyester. Practice has proved that the size of ash to a certain extent, can predict and characterize the performance of masterbatch filter.

8. Moisture content. Water is a very important indicator of polyester spinning, the user before the general re-determination of the masterbatch moisture content. However, in order to facilitate the user according to the water content of the masterbatch budget plus volume, masterbatch production plant in the product should also be detected before the moisture content.

9. Sublimation fastness of polyester masterbatch. Refers to the pigment in the masterbatch due to the heat directly into the gas to escape the carrier's performance. As the dye sublimation fastness is different, the deployment of color tone may change, the user's equipment may also be sublimated dye pollution. This is a masterbatch production plant selection of dyes must consider the indicators, but also an important indicator of the performance of masterbatch.

10. Color fastness of polyester masterbatch. Masterbatch can meet the basic needs of the user an important indicator. However, for the pre-spinning coloring, since each dye must be rigorously or even extremely harshly selected before use, and its dyeing mechanism is to form a consistent uniform solid melt, than the conventional conventional dyeing method Degrees are higher than at least one level. Therefore, under normal circumstances before the color of the fabric before the color fastness does not appear any big problem. As long as the masterbatch production plant attention to the accumulation of each dye, the color fastness of each ratio of data, the color of the masterbatch color fastness has an accurate and reliable basic estimates, not necessarily each batch number to detect this indicator.