POLYPROPYLENE DIFFERENT GRADES
One of the most versatile and widely available materials is polypropylene. In composition, polypropylene is a linear odorless and colorless hydrocarbon polymer designated as CnH2n. This material is a result of propylene polymerization in the presence of metal complex catalysts. The process of polypropylene production is similar to the high-density polyethylene production process. Depending on the definite catalysts type it is possible to get any type of polymer.
Polypropylene is produced in the form of white powder or granules with a packed density of 0.4-0.5 g/cm3. Also, this material is produced in a stable form, painted and unpainted. Unlike the polyethylene it harder and more heat resistant. Due to its properties, polypropylene is considered a versatile material mostly used in the field of packaging and labeling. This material is often intended for the manufacturing of injection molding and extrusion products of technical and domestic purposes. Also, polypropylene is a basic material in the production of various packaging materials, building materials, yarns, and products contacting with food.
As a rule, polypropylene is being produced in the shape of granules of similar color and size range from two to five millimeters. However, in some cases, granules can be in size of eight millimeters.
There are several different grades of polypropylene each of which has its own number and physical and mechanical properties.
The need for polypropylene continues to grow every day. Today, this material successfully replaces traditional materials such as glass, wood and metal – and other polymers.
Basic advantages of polypropylene
Despite the variety of polypropylene different grades, it has a list of common advantages and unique properties. It’s about such preeminence as:
- low density
- versatility
- processing capability
- temperature resistance
- resistance to the formation of fatigue cracks
- antifriction properties
- superior dielectric performance
- painting capability
- vapor barrier properties
Polypropylene is a petrochemical product of wide application and very important material. Its properties are adaptive, it is possible to change the conditions of the production process of polypropylene, change the components and composition of the copolymers, and regulate the molecular weight of the material.
It is worth noting that polypropylene is suitable for re-use. In addition, this material is non-toxic, it can be burned without harm to the environment.
The most common grades of Polypropylene
The most widespread types of polypropylene are the following:
- Low-Pressure Polypropylene
- Medium Pressure Polypropylene
- Low-pressure polyethylene castable
Today, there are other grades of polypropylene on the market, as many manufacturers work according to their own specifications.
The numbers in polypropylene grade name denote the definite information. The 1-st number denotes the pressure of synthesis processing. The second digit denotes reveals the type of material. The third digit means the stabilization recipe number. The fourth digit implies the staining formulation number. And the fifth digit implies the staining formulation color.
Every polypropylene grade possesses its own properties. The most significant differences are as follows: melt flow rate, melting temperature, brittleness temperature, flexural modulus, thermo-oxidative aging resistance.
The scope of all the pointed above polypropylene grades is the manufacturing of pipelines, pipe profile extrusion products, sheets, food contact products, even toys.
Taki & Da PTE LTD can provide you with diverse polypropylene grades. We guarantee quick supply, affordable rates, and long-term orders. If you are looking for a leading company-supplier of polypropylene & others petrochemicals – Taki & Da PTE LTD is the right choice. We work throughout Europe and are open to new orders and cooperation.
