The quality of white carbon black directly affects its performance in various application fields, therefore, strict quality testing and control are key links to ensure the quality of white carbon black products.


The quality testing of white carbon black mainly includes physical and chemical performance testing. In terms of physical performance testing, particle size distribution is an important indicator. The particle size and distribution uniformity of white carbon black will affect its dispersion and reinforcement effect in the material. Usually, laser particle size analyzer and other equipment are used to detect the particle size distribution of white carbon black to ensure that its particle size meets the product standard requirements. Specific surface area is also one of the key indicators, which reflects the surface activity of white carbon black particles. The larger the specific surface area, the stronger the interaction between white carbon black and other substances, and the better the reinforcement performance. Common detection methods include nitrogen adsorption method, etc.


Purity testing is crucial in chemical performance testing. The impurity content in white carbon black will affect its performance and application effect. Through chemical analysis methods such as atomic absorption spectroscopy and inductively coupled plasma mass spectrometry, the content of various impurities in white carbon black can be accurately determined to ensure that the product purity meets the requirements. In addition, the content of silicon hydroxyl groups on the surface of white carbon black can also affect its reactivity with other substances, which can be detected and analyzed by infrared spectroscopy and other methods.


In order to ensure the stable quality of white carbon black, a strict quality control system needs to be established during the production process. From the beginning of raw material procurement, strict quality control must be carried out to ensure that the raw materials meet production requirements. In the production process, it is necessary to strictly control process parameters such as reaction temperature, pressure, time, etc., to ensure the stability of the production process and the uniformity of product quality. At the same time, strengthen the sampling and inspection of intermediate and finished products in the production process, and timely discover and solve quality problems.


White carbon black production enterprises should continuously introduce advanced testing equipment and technology to improve the accuracy and efficiency of testing. Strengthen cooperation with scientific research institutions, conduct research and innovation in quality testing technology, continuously improve the level of white carbon black quality testing and control, provide high-quality white carbon black products for the market, and meet the strict requirements of various industries for material performance.