CPE 135A Chlorinated Polyethylene Powder PVC Drainage Pipe Impact Modifier Better Tearing Strength

RUNYE CPE 135A is a high-performance chlorinated polyethylene impact modifier specifically optimized for PVC drainage pipe manufacturing. This specialized grade is engineered to provide an ideal balance of impact strength enhancement, processability, and cost-efficiency for the demanding requirements of gravity drainage and sewer pipe systems. The unique structure of CPE 135A features a modified polyethylene backbone with approximately 35% chlorine substitution, creating an elastomeric material that exhibits outstanding compatibility with PVC resin due to their closely matched solubility parameters. During PVC processing, CPE 135A particles undergo controlled deformation and fibrillation under shear, forming a three-dimensional elastomeric network throughout the PVC matrix. This network serves as an efficient energy dissipation mechanism that dramatically improves the impact resistance of finished pipes, particularly in the critical low-temperature range where unmodified PVC exhibits pronounced brittleness. Our advanced manufacturing process employs precise control of chlorination conditions to achieve uniform chlorine distribution, resulting in consistent product quality that drainage pipe manufacturers can depend on for high-volume, continuous extrusion operations. The excellent thermal stability of CPE 135A during PVC processing minimizes the risk of degradation-related defects and ensures long production runs without die build-up or discoloration issues that can compromise pipe quality and production efficiency.

• Superior Impact Modification: At typical loading levels of 6-10 phr, CPE 135A dramatically improves the notched and unnotched impact strength of PVC drainage pipes, enabling compliance with international standards such as EN 1401, ASTM D2665, and AS/NZS 1260 that mandate minimum impact resistance for buried and above-ground drainage systems.
• Excellent Tearing Strength: The fibrillar elastomeric network formed by CPE 135A in the PVC matrix provides outstanding resistance to tear propagation, a critical property for drainage pipes that may experience point loading from rocks, construction equipment, or ground settlement during installation and long-term service.
• Process Stability at High Output: The thermal stability and controlled rheology of CPE 135A enables stable, high-speed extrusion of PVC drainage pipes with consistent wall thickness and surface quality, minimizing scrap rates and maximizing production efficiency for cost-sensitive commodity pipe products.
• Chemical Resistance Enhancement: The chlorine content of CPE 135A contributes to excellent resistance against common household chemicals, detergents, and mild acids and alkalis encountered in domestic wastewater, ensuring long service life of drainage systems without chemical degradation of pipe walls.
• Ring Stiffness Preservation: While significantly improving impact resistance, CPE 135A maintains good ring stiffness of modified PVC pipes, ensuring that drainage pipes meet the minimum stiffness requirements for buried installations without requiring excessive wall thickness that would increase material costs.
• Low-Temperature Performance: Maintains high impact resistance at temperatures down to 0°C and below, ensuring drainage pipes survive handling, transportation, and installation during winter construction seasons without brittle failure that would result in costly material waste and project delays.
• Smooth Inner Surface: CPE 135A modified PVC drainage pipes exhibit a smooth internal surface finish that minimizes friction losses and reduces the risk of solids deposition and blockage, contributing to efficient hydraulic performance and reduced maintenance requirements over the system lifetime.

RUNYE CPE 135A is the impact modifier of choice for PVC-U drainage pipes used in building drainage, soil and waste systems, underground sewer networks, stormwater management, land drainage, and industrial effluent disposal. It is suitable for both solid-wall and structured-wall (foam core, twin-wall, ribbed) pipe constructions across a wide range of diameters from 32mm to 630mm and beyond. CPE 135A is fully compatible with the calcium-zinc and lead-based stabilizer systems commonly used in drainage pipe formulations, as well as with processing aids, lubricants, and fillers including calcium carbonate. The product can be used in formulations with up to 20% recycled PVC content without significant compromise in impact performance, supporting circular economy initiatives in the pipe manufacturing industry.

Our CPE 135A is packaged in 25kg woven bags with inner PE liner to prevent moisture absorption during storage and transportation. Bulk packaging options include 500kg jumbo bags and 1000kg palletized loads available upon request. Every production batch is rigorously tested in our in-house laboratory for chlorine content, tensile strength, elongation, thermal stability, and particle size distribution before release. We maintain complete batch traceability records and provide certificates of analysis (COA) with every shipment. Our factory operates under an ISO 9001:2015 certified quality management system, with raw material inspection, in-process control, and final product testing at every stage. Samples are retained for 12 months for quality traceability. We offer free samples for customer evaluation and technical support for formulation optimization to ensure maximum performance in your specific application.