What is a polymer compound?
Polymer materials have many applications in various industries, with polyethylene being one of the most commonly used polymers. The use of pigments to increase the durability and resistance of polymeric plastic materials is called compounding. Polyethylene compound is considered one of the materials used in various industries, including the production of irrigation pipes, pressure pipes, and stretch films. In this article, we will do our best to fully explain the characteristics and applications of polyethylene compounds, so stay with us until the end.
What is a polyethylene compound?
Today, in many industries including the water supply pipe manufacturing industry, a high-yield black-pigmented material called compound is used. Polyethylene compound pipe is a type of water supply pipe made from a combination of compound materials and a percentage of filler as raw materials. Compound polyethylene is composed of industrial quality waste and new materials, which have high resistance to sunlight, suitable properties, and cost-effectiveness. In addition to its reasonable price and quality, polyethylene compound pipe also has excellent formability, making it competitive in domestic and international water supply pipe production markets.
Types of polyethylene
High-density polyethylene
This type of polyethylene is formed from a polymer chain with few branches, which has high tensile strength and resistance and is produced through Ziegler-Natta catalyzed polymerization.
Low-density linear polyethylene
This type of polyethylene is formed from a linear polymer with some short branches, which is produced from the copolymerization of ethylene with long-chain alkenes. It is used in plastic pipes and pipe fittings production.
Low-density polyethylene
This type of polyethylene is formed from branched chains, which have low tensile strength and resistance. It is produced through radical polymerization, which is highly flexible.
Polyethylene materials used in plastic goods, plastic pipes, and pipe fittings production have various classifications based on density. The density of polyethylene materials is determined by the size of the polymer chain, the type, and the number of branches in the chain, which will determine the type of polyethylene. Polyethylene materials are divided into the following three categories:
Polymeric compounds of linear polyethylene compound are considered one of the most widely used polymers, which can be used in the water supply pipes industry. In the following, we will explain some of the advantages of linear polyethylene compounds.
Advantages of polymer compounds
Nowadays, polyethylene compound is widely used in many applications such as plastic pipes and pipe fittings production. It is prepared from high-quality industrial recycled materials and a small percentage of new materials along with the modification of properties through nanomaterials, which has many advantages.
- Uniform use of raw materials in construction and production
- Having a standard dispersion percentage
- High resistance to sunlight
- Reasonable and competitive prices in domestic and foreign markets
- Consistent and desirable product quality
- Use of 40 to 100 per cent compound
Types of compound methods for water supply pipes
Various types of pigments are used today to increase the strength and durability of polymeric plastic materials in the compounding method. Innovative methods like nanotechnology to add pigment batches to polymer for making water supply pipes have become very common. Generally, there are two methods for compounding the constituent compounds of water supply pipes, which are explained below:
1. Using polyethylene grades containing ready-made pigment batches
In this method, petrochemical and manufacturing companies produced polyethylene grades with a specified percentage of pigment batches. The companies producing water supply pipes purchase these materials and use them to make polyethylene pipes.
2. Adding concentrated pigment masterbatches to natural polyethylene
This method adds a specific percentage of concentrated pigment masterbatch to the material compounds during pipe manufacturing. This pigment masterbatch contains a type of carrier polyethylene and a high percentage of pigment, mixed with the main polyethylene and base materials when used. This type of compound method for water supply pipes is considered one of the prevalent methods in the pipe manufacturing industry.
Polymer compound applications
Polyethylene compound is one of the most widely used materials in the plastic industry. This substance has a great variety and is popular in various polymer industries. Manufacturing companies use polyethylene compounds in pure or combination form, which is of high quality at a reasonable price.
Polyethylene compound is used in various industries, some of which include:
- Manufacturing and production of polyethylene films
- Manufacturing and
- production of drip irrigation pipes
- Preparation and
- production of pressure pipes
- Production of geomembrane sheets
- Manufacturing of plastic cartons
- Production of injection parts
One of the uses of compound polyethylene is the production of pressure pipes based on PE80 containing 2 to 2.5% carbon black. These compounds are widely used in producing polyethylene masterbatches, which have the highest usage of polyethylene in film industries.
Compounds are very effective in reducing the use of virgin polyethylene in industries and many European countries use recycled compounds to produce short-lifespan films. If polyethylene compounds additionally have a small percentage of micronized mineral powder, the final product prices will significantly reduce.
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