What are polyethylene properties?
The
properties of polyethylene differ depending on the degree of virgin material used to synthesize this thermoplastic and its structural crystallization. Generally, the integrity of polyethylene material in the end product in the plastic industry is based on density and melting. However, since this substance can be made by a number of methods for polymerization of ethane, each will bring differences in specific polyethylene properties. Variations that are likely to lead to these differences include molecular weight, density and degree of branching of molecular carbon connection.
Most people are familiar with the two most common forms of this polymer: low density polyethylene (LDPE) and high -density polyethylene (HDPE). Because the polyethylene properties of the first contain a larger degree of branching with a long chain, the matrix is less dense and does not offer as much strength in the tensile as the latter. Because this is the case, LDPE is cheaper production and processing than Similar Polymers. PolyethYlen properties of this material are suitable for use in the production of many types of stress -resistant plastic -resistant and commercial stress plastic. For example, HDPE is used to make Gallon size containers as well as for water accessories.
As mentioned above, polyethylene properties vary depending on the polymerization method used. The process can be induced by stimulating the polymerization of free radicals by introducing an alkaline amide or a secondary monomer (aniont addition of polymerization and polymerization of ions) or by using a catalyst. In addition, high -voltage application is used to achieve prolonged chain polyethylene (ECC), resulting in dense crystallization, but fraysparency.
catalysts are often a method of choosing a material that shows desirable polyethylene properties. For example, ultra -molecular polyethylene polyethylene with high molecular moleThe UHMWPE and Polyethylene with high molecular weight (HMWPE) are induced by a catalyst and have an unusually increased density and molecular weight. Due to the high degree of durability, UHMWPE is used to produce various parts of machines, artificial joints and implants and bulletproof vests. HMWPE is used to make articles resistant to chemicals such as fuel and storage tanks.
In addition to density, molecular weight and stress resistance, other polyethylene properties are considered to be a function and application. These include shock or impact force, shear speed - melt speed and polymer flow - and SAG resistance that refers to how the material holds until melting and removing. All these factors affect the way the material will have during processing. In addition, most of the raw material used in the plastic industry today can come from recycled polymer resins, polyethylene properties can be very different, even between different PR dosespresented as the same material.