Polypropylene Production Process and How to Obtain?
PP - Polypropylene - PP (Polypropylene) production process:
Polypropylene is currently one of the fastest growing polymers. Most of this growth costs lower than traditional materials (wood, glass, metal) and other thermoplastics of polypropylene. Polypropylene (PP) is a hard, hard plastic and is produced in various molecular weights and crystallinities.
Polypropylene is made from polymerization of propylene gas in the presence of a catalyst system, usually Ziegler-Natta or metallocene catalyst. The polymerization conditions (temperature, pressure and reactant concentrations) are determined by the degree of polymer to be produced.
There are various production processes with some general similarities. They occur in a gas phase (fluid bed or mixed reactor) or in a liquid phase process (slurry or solution). An example of a flow diagram corresponding to each of the two types of operation is shown in figure 1 below. Gas phase polymerization is economical and flexible and can accommodate a wide variety of catalysts. It is the most common technology in modern polypropylene production facilities. Related technologies are Novolen®, Unipol® (gas phase processes), Borstar® and Spheripol® (liquid phase processes).
Figure 1a: PP gas phase process example
Figure 1b: PP liquid phase process example
The resulting powder is finally transported to the powder silos and then converted into pellets containing a number of products.
How is Polypropylene Obtained ?
The melt process of polypropylene can be obtained by extrusion and molding. Common extrusion methods include producing meltblown and yarn bonded fibers to produce long rolls and converting them to use in the manufacture of useful products such as face masks, filters, diapers and wet wipes.
The most common shaping technique is injection molding, used for auto parts such as mug cups, cutlery, vials, lids, cups, household items and batteries. Techniques for air pressure molding and injection stretch air pressure molding, which include extrusion and molding processes, are also used.
The specific molecular properties and the possibility of adjusting the level with additives used during its production enables polypropylene to be used in many applications. For example, adding antistatic additives can help polypropylene surfaces withstand dust and dirt. Many painting techniques can be used in polypropylene, such as machining. By applying surface coating to polypropylene parts, the adhesion capability of printer ink and paints can be improved.
Our Polypropylene Products are: Polypropylene Fabrics, Polypropylene Sandbags