This indicator reflects the chemical properties of the carbon black surface. More precisely, the pH value reflects the acidity and alkalinity of the carbon black surface. The pH value is one of the factors affecting the scorch time (T35) of the rubber material. The lower the pH value, the longer the T35.In fact, the scorch time is positively related to the self-vulcanization time of the semi-finished product of the rubber. If T35 is short, the rubber material is self-vulcanized before it is transferred to the finished product and the rubber material will become difficult to process, which we do not want to happen.If T35 is longer, it will take a period of time for the rubber to start curing after it is transferred to finished products. Which wastes time and energy, which we also do not want to happen. Therefore,in the actual production process, the more acceptable T35 is about 10 minutes.
Beilum Carbon Chemical Limited specializes in research & development and production of Pigment Carbon Black.With a strong focus on research,we are constantly discovering new avenues and technologies that will allow us to provide our clientele with the highest-quality products at the most competitive prices.
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