The relationship between the filtration accuracy of plastic irrigation filter and its material

In modern agriculture and horticulture management, the design and implementation of irrigation systems play a vital role. As a core component of the irrigation system, the filtration accuracy of the irrigation filter is directly related to the water quality, crop growth and the overall efficiency of the irrigation system. Plastic irrigation filters are widely used because of their lightness, corrosion resistance and high cost-effectiveness.

Types of plastic materials

Plastic irrigation filters usually use materials such as polypropylene (PP), polyethylene (PE) and polyvinyl chloride (PVC). These types of plastics have different physical and chemical properties, which directly affect the design of the filter and its performance.
Polypropylene (PP): PP is a plastic with high strength and good corrosion resistance, which is widely used in the manufacture of irrigation filters. Its superior high temperature and chemical corrosion resistance make it suitable for use under various water quality conditions, ensuring the stability of the filter in different environments.
Polyethylene (PE): PE is a flexible and impact-resistant plastic suitable for filters in low-pressure irrigation systems. Although its temperature resistance is relatively poor, it performs well in general irrigation environments and can effectively meet daily use needs.
Polyvinyl chloride (PVC): PVC is usually used to make structural components and has strong corrosion resistance. However, PVC may deform under high temperature conditions, so its filters are more suitable for applications in mild environments.

Definition of filtration accuracy
Filtration accuracy refers to the minimum size of particles that the filter can remove from the water, usually expressed in microns (μm). Higher filtration accuracy means that the filter can remove smaller particles, which is critical to the performance of the irrigation system. Filters with high filtration accuracy can effectively remove suspended matter, sediment, algae and pathogens in the water, thereby ensuring the cleanliness and safety of irrigation water.

Effect of material on filtration accuracy
The characteristics of plastic materials have a significant impact on the filtration accuracy of the filter, which is mainly reflected in the following aspects:
Aperture control: The pore size design of plastic filters is one of the key factors affecting filtration accuracy. During the processing process, different types of plastics can achieve different pore size controls. For example, polypropylene materials can be manufactured with finer pore sizes through thermoplastic molding technology, thereby achieving higher filtration accuracy. In contrast, the pore size control capabilities of polyethylene and PVC are relatively weak, and there may be certain limitations in filtration accuracy.
Material uniformity: The uniformity of plastics is closely related to filtration performance. Uniform plastic materials can ensure the consistency of the filter pore size and avoid clogging or leakage during the filtration process. The molecular structure of polypropylene is relatively uniform, which can provide a more stable filtration effect, while some low-quality plastics may have problems with material uniformity, which affects the filtration accuracy.
Wear resistance and durability: During use, plastic filters will be impacted and worn by water flow. Materials with excellent wear resistance can maintain the stability of their structure, thereby maintaining a high filtration accuracy. Polypropylene generally exhibits good wear resistance, while polyethylene may wear at high flow rates, resulting in a decrease in filtration accuracy.