Low Smoke Zero Halogen (LSZH) Cable Deodorizer

Product Introduction

In the industrial production of Low Smoke Zero Halogen (LSZH) eco-friendly cables, formulations often require high ratios of inorganic flame retardants and surface coupling agents (especially aminosilanes). Under the high temperatures of extrusion compounding and cable coating, coupling agents easily undergo thermal-oxidative degradation, releasing a strong "fishy" free amine gas. This mixes with sulfide and aldehyde/ketone impurities from resin degradation, giving the finished cable a pungent odor. Traditional deodorizing solutions struggle in low-shear extrusion processes, leading to uneven dispersion. They may also release moisture that lowers the cable's insulation resistance or migrate to the surface after long-term operation.

To thoroughly bridge the gap between odor purification, surface finish, and electrical safety, this product introduces a "fully melting phase and water-free nano-isolation" reactive deodorizer for highly filled flame-retardant polyolefin systems. Excluding rigid carriers that clump easily, its core components fully liquefy into a polymeric fluid upon extrusion heating, guaranteeing an ultimate flawless surface finish from a rheological standpoint. Equipped with high-density reactive targets and empty metal orbitals, it accurately captures and locks free amines and degraded VOCs in the melt, producing absolutely no water or gas. Upon cooling, the active ingredients undergo perfect homologous co-crystallization with the cable matrix via homologous polymer long chains, thermally locking the migration channels. This product perfectly protects the cable's flame-retardant rating and mechanical tensile properties, serving as the ultimate odor-neutralizing solution for high-end new energy vehicle wiring and 5G communication cables.

Appearance

White powder

Deodorizing Principle

• Targeted Nucleophilic Ring-Opening (Amine Killer): The unique polymer Lewis acid functional groups exhibit extremely strong nucleophilic reactivity when heated during extrusion, actively tracking basic free amines (the source of the fishy odor) generated by coupling agent degradation. They instantly undergo an irreversible solid-phase reaction to convert them into highly stable macromolecular structures without releasing any moisture, ensuring the insulation layer remains dense and non-porous.
• Empty Orbital Charge Complexation: Built-in highly active metal complex centers utilize their unique electrophilic empty orbitals to precisely identify and capture trace volatile impurities (containing sulfur and oxygen) caused by the thermal degradation of antioxidants or resins, forcing them into non-volatile macromolecular complexes.
• Water-Free Nano Physical Blockade: Employs a deeply modified nano-scale mesoporous network with a massive surface area and van der Waals forces to strongly adsorb escaping low-molecular VOCs. It possesses absolute water-free characteristics, physically eliminating the risk of electrical performance degradation caused by moisture vaporization.
• Homologous Co-Crystallization Anchoring: The chemical reaction targets are mounted on long polymer carbon chains highly homologous to the LSZH cable matrix. During cooling and crystallization, these homologous chains undergo molecular-level entanglement and co-crystallization with the cable resin. This thermodynamic "in-situ deadbolt" thoroughly cuts off the migration paths of captured polar compounds, ensuring long-lasting surface dryness.

Application Areas

• New Energy & Automotive Cables: New energy vehicle high-voltage wiring harnesses, AC/DC charging pile cables, and various eco-friendly halogen-free flame-retardant automotive wiring.
• Communication & Data Cables: 5G communication base station power cords, indoor fiber optic cables, and high-speed data cable sheathing.
• Engineering & Specialty Cables: Highly flame-retardant power cables for rail transit, aerospace, marine, and high-rise buildings.
• Elastomeric Wires: Eco-friendly flame-retardant cables based on polyolefin elastomer matrices such as EVA, POE, and PE.

Usage Method

• Adding Method: A ready-to-use physical dry powder. Add it during the initial mixing stage of internal mixing, extrusion pelletizing, or dry-blending processes alongside the resin base, flame retardants, and coupling agents.
• Mixing Requirements: Features broad tolerance for mixing equipment shear forces (high-speed mixers provide even better results). Conventional mixing at room temperature distributes it evenly; within the standard processing temperatures of cable factories, it achieves instantaneous melting and homogeneous dispersion.

Reference Dosage

• General Recommendation: 0.3% - 0.5% of the total material weight.
• Starting Test Dosage: It is suggested to start evaluating the initial odor-neutralizing effect and finished surface state directly at 0.4%. Adjust upward or downward based on the specific concentration of flame retardants and aminosilane coupling agents in the resin formulation.

Precautions

• Strict Moisture Sealing: Although the internal network is hydrophobic, always tie the inner bag tightly after opening to prevent ambient moisture adsorption, which could affect extrusion density.
• Extrusion Temperature Control: Follow standard LSZH extrusion temperatures to prevent the inorganic flame retardant from releasing crystal water prematurely due to excessively high die temperatures, which could mask or interfere with the true evaluation of the deodorizer.