Shandong Shangshun Chemical
Rubber accelerator refers to rubber vulcanization accelerator. Rubber vulcanization is mainly carried out with sulfur, but the reaction of sulfur and rubber is very slow, so the vulcanization accelerator came into being. The addition of accelerators to the compound can promote the activation of vulcanizing agent, so as to accelerate the cross-linking reaction between vulcanizing agent and rubber molecules, and achieve the effect of shortening the vulcanizing time and reducing the vulcanizing temperature.
Rubber accelerator refers to rubber vulcanization accelerator. Rubber vulcanization is mainly carried out with sulfur, but the reaction of sulfur and rubber is very slow, so the vulcanization accelerator came into being. The addition of accelerators to the compound can promote the activation of vulcanizing agent, so as to accelerate the cross-linking reaction between vulcanizing agent and rubber molecules, and achieve the effect of shortening the vulcanizing time and reducing the vulcanizing temperature. The main vulcanization accelerators used are mainly secondary sulfonamides, thiazoles, thiuram, and some guanides, thioureas and dithiocarbamates according to their chemical structure. Among them, secondary sulfonamides have the best comprehensive properties and are the most widely used.
Antioxidant refers to the compound that can prevent or inhibit such factors as oxygen, heat, light, ozone, mechanical stress, heavy metal ions and so on from destroying the performance of products and extending the storage and service life of products. The phenomenon of decline is called aging. With the progress and development of the aging process, the properties of rubber and its products will gradually decrease to the point of complete loss of use value.
GXZ series high efficiency rotary film evaporator, namely scraper evaporator, is a new type of high efficiency evaporator which can be forced to form film by rotating scraper and can be evaporated under vacuum conditions. It has large heat transfer coefficient, high evaporation intensity, short flow time and high operating flexibility. It is especially suitable for evaporation, concentration, degassing and dissolving, distillation and purification of heat-sensitive materials, high-viscosity materials and materials containing particles that are easy to crystallize. Our company has been manufacturing such equipment for many years, and has accumulated rich experience in manufacturing and use. For a long time, closely combined with the actual production of customers and market demand, in order to meet the user's process requirements, choose a reasonable and appropriate structure, to ensure superior and reliable manufacturing quality, in the tooling equipment, testing means and product design and other aspects of continuous improvement and increasingly perfect, has made remarkable achievements, technical level and product quality in the domestic leading level.
The material enters the evaporator radially from the top of the heating area, and is distributed to the heating wall of the evaporator through the distributor. Then the rotating film scraper squeezes the material into a liquid film of uniform thickness on the heating surface continuously and uniformly, and pushes it downward in a spiral shape. In this process, the rotating film scraper ensures that the continuous and uniform liquid film produces high-speed turbulence, and prevents the liquid film from coking and scaling on the heating surface, thereby improving the total transfer coefficient. The light components are evaporated to form a steam flow, which reaches the external condenser directly connected with the evaporator through the vapor-liquid separator, and the recombination is discharged from the cone at the bottom of the evaporator. A unique distributor not only has the ability to evenly flow the material to the inner wall of the evaporator to prevent the material from splashing into the steam stream inside the evaporator, but also has the ability to prevent the newly entered material from flashing here, which is conducive to the elimination of foam, and the material can only evaporate along the heating surface. The upper part of the scraper evaporator is equipped with a centrifugal separator designed according to the characteristics of the material, which separates the droplets from the rising steam stream and returns them to the distributor.
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