BK-23 is specifically engineered to meet the bundle combustion testing requirements for B1-grade low-smoke zero-halogen (LSZH) cable materials. It is a specially modified silicate product formed by uniformly dispersing exfoliated composite-structured silicates in an aqueous phase to create a cross-linked network structure.

To achieve complete secondary exfoliation and dispersion of organic nanosilicate layers within the resin during the production of organic nanomontmorillonite silicate polymer nanocomposites, processing equipment with sufficient shear capacity-such as a twin-screw extruder (>40 L/D with high-dispersion screw configurations) or an internal mixer-must be employed. This ensures:

1. Intercalation of polymer chain segments into multi-dimensional nanostructures;

2. Uniform dispersion of both phases;

3. Prevention of non-shearing compaction.

The more uniform the dispersion, the lower the required additive dosage, resulting in improved product consistency and optimal char formation and anti-dripping performance during combustion.