HEDP (Hydroxyethylphosphonic acid) has relatively limited applications in the plastics industry, but it still plays a certain role in certain specific aspects:

1. Application of HEDP in the Plastic Industry
As a stabilizer and antioxidant
HEDP has excellent chelating properties and can form stable complexes with metal ions such as iron, copper, manganese, etc., thereby reducing the catalytic degradation of these metal ions in the plastic production process and improving the stability of plastics.

Used for water treatment in plastic production
In the plastic production process, especially in the extrusion, injection molding, and cooling stages, the quality of water has a significant impact on equipment and product quality. HEDP, as a water treatment agent, can prevent scale deposition in cooling systems, extend equipment life, and improve production efficiency.

Application in PVC (polyvinyl chloride) processing
HEDP can be used as a stabilizer in certain PVC production processes, helping to reduce thermal and photodegradation and improve product durability.

2. The role of HEDP in plastic surface treatment
Metal coating treatment for plastic surfaces
In plastic electroplating processes such as ABS and PC+ABS electroplating, HEDP may be used in the pre-treatment stage to help remove surface contamination and improve the adhesion of the coating.
Application in Plastic Composite Materials
In some high-performance plastics, such as filler plastics and glass fiber reinforced plastics, HEDP may serve as a dispersant or wetting agent to improve the dispersion of fillers, enhance the uniformity and performance of materials.