NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to understanding and leveraging the science behind our chemical products. Chlorinated Polyethylene (CPE), and specifically the 135AZ grade, offers a fascinating case study in polymer modification. Its effectiveness stems from a carefully controlled chemical process and a molecular structure that imparts unique advantages to host polymers, particularly PVC.

The foundation of CPE-135AZ lies in the chlorination of High-Density Polyethylene (HDPE). This process fundamentally alters the polymer's structure, reducing its crystallinity and increasing its compatibility with polymers like PVC. The resulting material is a flexible, rubbery polymer with excellent impact strength. The precise control over chlorine content (around 35% for CPE-135AZ) and molecular weight is what defines its performance characteristics, making it a superior chlorinated polyethylene processing aid. Manufacturers benefit from this precisely engineered composition that helps to improve PVC fluidity and plasticization during processing.

Scientifically, CPE-135AZ functions as an impact modifier by creating a toughened, dispersed phase within the rigid PVC matrix. Upon impact, the CPE particles deform and absorb energy, preventing crack propagation. This mechanism is crucial for achieving high impact resistance CPE, especially at low temperatures, where its inherent flexibility is beneficial. The low temperature mechanical properties CPE are a direct result of its amorphous structure and relatively low glass transition temperature.

Furthermore, the presence of chlorine atoms in the CPE molecule contributes to its flame retardancy. This makes it a valuable additive when used as a flame retardant CPE for ABS and other flammable polymers. Its inherent resistance to heat and weathering also classifies it as a robust weatherable thermoplastic additive, ensuring product longevity in diverse environmental conditions.

The molecular design of CPE-135AZ allows it to act as a coupling agent, improving the adhesion and compatibility between PVC particles and fillers, and enhancing the overall mechanical integrity of the composite. NINGBO INNO PHARMCHEM CO.,LTD. leverages this scientific understanding to provide CPE-135AZ as a key enabler for advanced material development, helping industries create products that meet demanding performance specifications.