The core function of the melt flow modifier used in PVC stabilizers is to significantly improve the flowability and lubricity of PVC resin during processing, while maintaining or enhancing the thermal stability of PVC.

The melt flow modifiers FM06 and FM08 of HTX are mainly adept at significantly improving the processing flowability and melt strength of the stabilizer itself and the final PVC product. FM06 and FM08 exhibit the following core advantages:

1. Excellent flow enhancement and processing performance

PVC molecular chains exhibit extremely high viscosity in a molten state. FM06 and FM08 can effectively penetrate between PVC molecular chains, reduce intermolecular friction, significantly improve the melt flow rate under low shear forces, and prevent "flow stagnation" in high filling systems using composite stabilizers during extrusion.

2. Perfect internal and external lubrication balance

Melt flow modifier provides excellent metal release performance in the middle and later stages of processing (preventing PVC melt from adhering to screws and mold walls), prolonging continuous production time, and reducing the tendency of precipitation. And it can promote the early uniform plasticization of PVC resin, improve the dispersibility of inorganic fillers in stabilizers and PVC matrix. Many stabilizer manufacturers use FM06 and FM08 in proportion to build a "full processing cycle" lubrication protection from early plasticization to mid to late demolding.

3. Improve the surface glossiness and appearance quality of the product

Uneven flow of the melt during high-speed extrusion can easily lead to the formation of "shark skin" or ripples. FM06/FM08 can make the melt flow rate uniform and give the product surface a high mirror gloss. And it can stabilize the uniform dispersion of various components in the pigment and PVC formula, avoiding the appearance of color spots or patches on the surface.

4. Synergistic thermal stabilization effect

Shorten the average residence time of PVC in the barrel. As the fluidity improves, the speed at which the material passes through the barrel increases, directly reducing the risk of PVC degrading and releasing hydrogen chloride due to prolonged heating, and indirectly enhancing the dynamic thermal stabilization efficiency of the stabilizer.

5. "Carrier" of high-filling system

In current PVC products (such as SPC flooring, foam boards, and low-cost pipes), a high proportion of calcium carbonate fillers is often added, which can lead to extreme dryness and difficulty in plasticization of the system. FM06/FM08 has strong encapsulation and dispersion capabilities, allowing it to accommodate a higher proportion of fillers while maintaining good melt flow, helping enterprises significantly reduce formulation costs.

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