PP geotextile and PET geotextile are common geotextile materials, they have the following differences:

Material composition: PP geotextile is made of polypropylene (PP) fibers and PET geotextile is made of polyester (PET) fibers. Due to the different materials, their performance and characteristics will also be different.

Physical properties: PP geotextile generally has higher tensile and rupture strength, while PET geotextile has higher strength and stiffness. Therefore, PET geotextiles are more commonly used in engineering applications that require higher load-bearing capacity and stiffness, such as retaining walls and reinforcement projects.

Chemical resistance: Since PP geotextile is made of polypropylene, it has good resistance to chemical erosion and is able to resist a wide range of acid and alkali chemicals. PET geotextile has poor chemical resistance and is easily eroded by some acid and alkali solutions and degraded.

Aging resistance: PP geotextile has relatively good aging resistance, able to resist ultraviolet radiation and long-term exposure to erosion. PET geotextile, on the other hand, requires additional UV and anti-aging treatment to improve its durability.

Application areas: PP geotextile is suitable for soil berms, greening projects, seepage control projects, etc.; while PET geotextile is mainly used in reinforcement projects, protective covers, tunneling projects and other engineering projects that require higher strength and stability.

In summary, PP geotextile and PET geotextile in the material composition, physical properties, chemical resistance, aging resistance and application areas, etc. There are differences, according to the specific project requirements and material properties to choose the right geotextile material.