How to test masterbatch

I. Detection of color and dispersion of color masterbatch:

1, color detection: the same raw material with the carrier is added in proportion (1% or 2%), at 170℃-190℃ (depending on different raw materials) temperature through injection molding to get 2.5 mm thick sheet, contrast with the sample color, in contrast with the light color tester can be tested, dark can be compared and debugging under the conditions of good light according to experience.

2, dispersibility with the same proportion and temperature pressed into the film, observe the number of pigment particles.

II. Ash content and melt index test:

1. Ash is the proportion of ashes that are completely burned after a certain amount of masterbatch is weighed.

2. Melting index is the value obtained every 10 min at the temperature of 190℃ and 2.16KG.