Filters made of PP materials have the following advantages:
### Physical performance
- ** High filtration accuracy ** : PP melt-blown filter core filtration accuracy can reach 5 micmeters, can effectively remove fine particles in the water impurities, such as suspended solids, sediment, rust, etc., to ensure the cleanliness of water quality [^1^][^4^].
- ** Strong fouling capacity ** : PP cotton filter element outer fiber is thick, inner fiber is thin, outer layer is loose, inner layer is tight, forming a gradually tightened multilayer gradient structure, each layer of fiber can be intercepted and stored impurities in water, fouling capacity is large [^3^].
- ** Large flow rate, small pressure difference ** : PP fiber with polypropylene fiber as raw material, through the self-adhesive way of winding each other, forming a three-dimensional bending diameter of the microporous structure, with a large specific surface area and high porosity, so that the water can quickly pass through the filter element, the inner and outer water height difference is not large, so the filtration flow and pressure difference is small [^3^].
### Chemical properties
- ** Good chemical stability ** : PP material has good chemical stability, acid, alkali and organic solvent corrosion, suitable for a variety of complex water quality environment, not easy to chemically react with substances in water, so as to ensure the stability and reliability of the filtration process, prolong the service life of the filter [^2^][^3^][^4^].
- ** No secondary pollution ** : PP material itself is non-toxic and tasteless, does not contain any chemical adhesives, does not release harmful substances into the water, avoids secondary pollution to the water quality, ensures the safety and health of the filtered water, can be directly used for drinking water filtration and other scenarios with high water quality requirements [^2^][^5^].
### Use cost aspect
- ** Low cost ** : The raw material cost of PP material is relatively low, and the production process is relatively mature, making the price of PP material filter in the market relatively close to the people, with high cost performance, to meet the needs of large-scale application [^3^][^5^].
- ** Convenient replacement ** : PP filter element usually adopts card type or disposable design, installation and replacement are very convenient, the user can replace the filter element according to the actual use of the situation, without professional on-site service, saving time and cost.
### Other aspects
- ** Good thermal stability ** : PP material has good thermal stability in a certain temperature range, can work normally at higher temperatures, generally can withstand the temperature of about 60℃, can withstand the impact of higher temperatures in a short time, not easy to deformation or damage [^3^][^4^][^5^].
- ** High strength ** : PP material has a certain strength and toughness, under normal use pressure is not easy to break or damage, can withstand a certain water pressure and water flow impact, to ensure the stable operation of the filter [^3^][^4^][^5^].