The double-roller mixing mill is an open intermittent mixing equipment for plastic materials, which is composed of two parallel rollers with adjustable roller gap. Its main function is to mix and plasticize the uniformly mixed raw materials, and provide the mixing and plasticizing uniform molten material for the rolling mill. In the process of mixing rubber, the mixing mill mainly relies on the extrusion and shearing effect of the two relatively rotating rollers on the rubber. After multiple kneading and mixing, the mixing process is also accompanied by chemical reactions, which break the macromolecular chains inside the rubber, so that the various components inside the rubber are mixed and dispersed evenly, and finally achieve the purpose of mixing rubber.
PVC has many advantages, but it has the disadvantage of poor thermal stability. The direct and practical way to solve the poor thermal stability of PVC is to add heat stabilizers. With market research, more and more substances and their derivatives are used as heat stabilizers for PVC. The evaluation and testing of heat stabilizers require different methods. In general, there are two major methods: static and dynamic. The static methods include Congo red test paper method and aging oven test, and the dynamic methods include torque rheometer test and dynamic refining test.
The functions of the double-roll mill are as follows: the two rolls are independently driven by servo motors, with stepless and precise speed regulation and good consistency; the hard chrome-plated mirror calendering rolls are equipped with 304 stainless steel roll cores, which are of reliable quality and have high surface finish; electric heating/oil heating can be selected according to process requirements; the distance between the two rolls is manually adjustable, and a mechanical ruler is provided as a reference; the high-strength European standard integrated frame is light, beautiful and durable; the 304 stainless steel desktop is practical and beautiful; the computer-based measurement and control system and friendly operation interface are easy to operate and have more powerful functions; the real-time measurement and graphic display of important data are convenient for observation; the emergency stop device and various safety protections ensure the safety of operators.
