What are the advantages of adding JC-880 processing aid to PVC water pipes?

When processing PVC water pipes (rigid PVC, UPVC), the addition of a specialized processing aid (JC-880) plays a central role in improving processing fluidity, enhancing product appearance and mechanical properties, and stabilizing production efficiency. Its specific advantages fall into three major categories: processing, products, and production:

I. Core Advantages in the Processing and Forming Stage

  • Improve Melting and Plasticizing Efficiency
    Promotes rapid and uniform plasticization of PVC resin, reducing plasticizing temperature and torque.
    Minimizes unplasticized particles and fish eyes while preventing localized overheating and decomposition.
  • Enhance Melt Strength and Extensibility
    Prevents melt fracture, melt sagging, and die buildup, suitable for high-speed extrusion.
    Ensures more uniform wall thickness and dimensional stability during pipe extrusion, minimizing thinning and collapse.
  • Reduce Processing Energy Consumption and Equipment Load
    Enables smoother plasticization, reduces screw/barrel wear, and extends equipment lifespan.
    Allows appropriate increases in extrusion speed to boost production capacity.

II. Performance Enhancement of Finished Water Pipes

  • Superior Surface Quality
    Smooth inner walls and polished outer surfaces, free of flow marks, pitting, or orange peel texture.
    Enhances pipe light transmission/matte uniformity and appearance grade.
  • More Stable Mechanical Properties
    Improves impact resistance, tensile strength, and ring stiffness while reducing brittleness.
    Minimizes internal stress, lowering risk of cracking or bursting during service.
  • Superior dimensional accuracy and long-term stability
    Minimized shrinkage rate and excellent roundness facilitate adhesive bonding/fusion welding.
    Enhanced high-temperature pressure resistance and creep resistance make it ideal for water supply and drainage pressure pipes.

III. Advantages at the Production and Formulation Level

  • Expanded Processing Window
    Enhanced tolerance to temperature, shear, and rotational speed, reducing yellowing, scorching, and decomposition.
  • Synergistic Stabilization System
    Excellent compatibility with thermal stabilizers, lubricants, and toughening agents, minimizing lubrication imbalance.
  • Compatibility with High-Fill Systems
    Maintains excellent flowability and strength even with high fillers like calcium carbonate, delivering cost savings without compromising performance.

Common Processing Aids (Commonly Used in PVC Water Pipes)

  1. ACR Processing Aids (Methacrylate-based): Mainstream choice, balancing plasticization, melt strength, and surface gloss.
  2. Small amounts of MBS and CPE: Primarily for toughening while also aiding processing.

Junchuang JC-880 can replace products like ACR, MBS, and CPE. Add a small amount, enhances quality, and increases production output.