At NINGBO INNO PHARMCHEM CO.,LTD., we are committed to providing our clients with not only high-quality chemical products but also the technical knowledge to leverage them effectively. Chlorinated Polyethylene (CPE) is a key product in our portfolio, renowned for its performance-enhancing capabilities, particularly in PVC applications. Understanding its technical specifications and processing behavior is crucial for optimizing its benefits.

CPE is characterized by its chlorine content, which typically ranges around 35-42%. This chlorine content is a primary determinant of its properties, influencing its compatibility with PVC, impact strength enhancement, and flame retardancy. Our CPE grades, such as CPE135A, are specifically formulated to deliver optimal performance in rigid PVC. For example, a chlorine content of 35±2% is standard for our impact modifier grades, ensuring excellent compatibility and improved impact resistance. The technical data often includes parameters like thermal decomposition temperature (typically above 165°C), volatile matter content (≤0.4%), and bulk density (≥0.48 g/cm³), all of which are critical for processing and final product quality.

The mechanism by which CPE enhances PVC performance is fascinating. When incorporated into PVC during processing, CPE particles become dispersed within the PVC matrix. Under processing shear and heat, CPE undergoes a transformation, often forming a network structure that interpenetrates the PVC matrix. This structure is highly effective at absorbing impact energy. The specific grade of CPE, such as our offerings suitable for PVC window profiles, is engineered to promote this network formation, leading to significantly improved impact strength and flexibility, especially at lower temperatures. This is why selecting the right chlorinated polyethylene impact modifier for PVC applications is so important.

Processing CPE with PVC requires careful consideration of temperature and shear. CPE typically melts at a lower temperature than PVC, allowing it to effectively surround PVC primary particles, forming the desired impact-modifying structure. However, excessive processing temperatures or shear can lead to degradation or a transition from a desirable network structure to a less effective particulate structure. Therefore, understanding the fusion characteristics and thermal stability of both the PVC resin and the CPE modifier is essential. Our technical sheets provide detailed information on parameters like thermal decomposition temperature and stabilization time to guide optimal processing conditions.

The benefits of using CPE extend to improved compatibility and synergy with other PVC additives. For instance, CPE can work effectively alongside heat stabilizers and lubricants to create well-balanced PVC formulations. Its inherent flame retardancy also adds value, potentially reducing the need for additional flame-retardant additives in certain applications. By choosing NINGBO INNO PHARMCHEM CO.,LTD., manufacturers gain access to technically superior CPE that can help them improve impact strength and flexibility of rigid PVC while streamlining their production processes.

We are dedicated to supporting our clients with comprehensive technical data and expertise. Whether you are looking to enhance the performance of PVC pipes, fittings, or architectural elements, our range of Chlorinated Polyethylene products offers a reliable solution. Contact NINGBO INNO PHARMCHEM CO.,LTD. to learn more about our technical specifications and how our CPE can be the key to achieving superior results in your PVC manufacturing.