Mixing Technology

 Mixing Technology

Mixing means that in order to improve the physical and mechanical properties of rubber products, improve the processing and molding process, reduce production costs, it is necessary to add various adjuvants in raw rubber or plastic glue, such as fillers, reinforcing agents, accelerators, vulcanizing agents, antioxidants, anti-scorching agents, etc. These adjuvants have solid, liquid and other materials, and the various adjuvants added are dispersed evenly. Make sure the properties of the compound are consistent. Therefore, the process of evenly dispersing various compounding agents to raw rubber or plastic rubber in the rubber mixing machine is called mixing, and the rubber produced by mixing is called mixing rubber.

  Mixing is the process of evenly mixing raw glue or plastic glue with various compounding agents through mechanical action. Poor mixing, the rubber material will have a variety of problems, such as scorch, spray frost, etc., so that the rolling, pressing, gluing, vulcanization and other processes are difficult to carry out normally, and lead to the performance of the finished product.

  The mixing process consists of four stages: mixing, dispersing, mixing and plasticizing. Raw rubber or plastic rubber is subjected to shearing and stretching in the rubber mixing machine to produce rheology and fracture, crushing, and fully contact with the compounding agent, so that it is mixed. This process is called the wetting stage or the powdering stage. The compound mixed with rubber is further broken into fine particles of tiny size under the action of mechanical force, while increasing the contact surface area and further improving the mixing uniformity. So it is also called microscopic dispersion. The process of uniform distribution of various compounds in raw or plasticized rubber. The so-called mixing means that the distribution uniformity of the compounding agent in the compound is only increased without changing the size of its particles.    Therefore, this process is also called macro dispersion or simple mixing. The rubber molecules continue to break under the mechanical force-chemical action, so that the viscosity decreases and uniform mixing is achieved. These processes do not occur in isolation, but alternately at the same time.

  Related process equipment recommendation:

https://www.potop-polymer.com/rheometer/laboratory-torque-rheometer-professional.html

https://www.potop-polymer.com/filter-pressure-value-tester/lab-capillary-rheometer-for-high-polymer.html