Explanation

Also known as eject, it refers to the phenomenon that the liquid or homologous compound in the white part of vulcanized rubher or compound migrates to the surface of products or films. There are three types of rubber blooming: ① powder spraying. Vulcanizing agent, accelerator, activator, antiager, filler and other powder coordination agents precipitate, forming a layer of powder on the surface of rubber. ② Spray wax. Paraffin wax, paraffin wax and other waxy substances precipitate and form a wax film on the surface of rubber. ③ Fuel injection. Liquid coordination agents such as softening agent, tackifier and lubricant are separated out. A layer of oil is formed on the surface of rubber. The blooming on the rubber surface sometimes appears in one form, sometimes in two or more forms. rubber blooming is as follows: 1 After the content of M in the white part of rubber reaches saturation, the compound close to the surface layer will first precipitate, and then migrate from the white layer to the surface layer to precipitate. When the content of the compound in rubber is low to its saturation content, the precipitation process will end. There are many reasons for blooming. Improper design of adhesive formula. Improper process operation, poor storage conditions, product sulfur deficiency, product aging, etc. blooming not only seriously affects the appearance quality of the product M. To some extent, it also affects the service performance, service life, processing performance and physical and mechanical properties of rubber products

Classification