Kaolin calcining temperature
The relative density of 2.5-2.6, the main component is alumina and silicon oxide crystal material with different crystal water, chemical formula Al2O3? 2SiO2? 2H2O (crystal water to form hydroxyl groups on the surface of kaolin). The structure: Si (Al) - OH - Si - O - Al - and - Si (Al) O, the activity is on the surface modification of kaolin clay foundation. The pH value is generally about 4-5, acidic, and the crystal structure of the -OH based adsorption accelerant, thus delayed vulcanization effect.
Also known as clay kaolin clay, clay, generally translated, is a content of kaolinite origin rocks have reached more than the amount of which is the final product of granite and feldspar weathering, is the main component of hydrated aluminium silicate. Catalpo rubber old called crushing natural product is refined, the price is low.
Clay can be divided into hard clay (hard clay) and soft clay (soft clay). The hard clay particles with smaller particle size, below 2 m accounted for 87-92%, its good reinforcing effect, soft clay, coarse particle size below 2 m accounted for 50%, more than 5 m about 25-30%, the reinforcing.Hard clay and not only for the poor classification on the mineralogy, the rubber with have different differences, especially the influence on the synthesis of the more obvious natural rubber.
