Detailed Introduction
Performance Specification Table for Low-Smoke, Halogen-Free Materials (LSZH Cable Compounds)
Parameter Category | Performance Metrics | Unit | Typical / Target Value | Test Standard |
Basic Physical Properties | Density | g/cm³ | 1.35 - 1.50 | ISO 1183 |
Thermal Performance and Aging | Heat Deflection Temperature | degrees Celsius | ≥ 70 | ISO 306 (Method A) |
Thermal stability (tensile strength retention after oven aging) | % | ≥ 80 (135°C × 168 h) | IEC 60811-401 | |
Electrical Performance | Volume resistivity | Ω·m | ≥ 1.0 × 10¹² | IEC 60093 |
Dielectric strength | MV/m | ≥ 20 | IEC 60243-1 | |
Flame Retardancy and Safety | Limiting Oxygen Index (LOI) | % | ≥ 32 | ISO 4589-2 |
Vertical Burning Rating | - | V-0 | IEC 60332-1-2 | |
Smoke Density (Flaming) | - | ≤ 300 (minimum light transmittance) | ASTM E662 | |
Environmental Protection Requirements | Halogen content (excluding chlorine) | parts per million | ≤ 1000 (target) | IEC 61249-2-21 |
pH Value & Electrical Conductivity (Combustion Droplets) | - | pH ≥ 4.3, conductivity ≤ 100 μS/mm | IEC 60754-1/2 |
How to use
1. Material Preparation and Pre-treatment
Drying: Typically, drying is carried out at 70–80°C for 2–4 hours to prevent moisture from adversely affecting processing performance.
Ingredient Mixing: Accurately weigh ingredients according to the formulation and pre-mix using a high-speed mixer for 3–5 minutes.
Temperature Control: Ensure the barrel temperature is maintained within the range of 160–190°C.
2. Key Points of the Manufacturing Process
Extrusion process (profiles, pipes):
A screw length-to-diameter ratio of ≥25:1 is recommended, with a tapered screw design.
The die temperature is controlled at 175–185°C.
3. Injection Molding Process:
Injection pressure: 80–120 MPa; mold temperature: 40–60°C.
Holding time should be adjusted according to the product thickness.
4. Calendering Process:
Roller temperature: 170–180°C; pay attention to tension control during winding.
Equipment and Mold Requirements
The equipment shall be corrosion-resistant (material containing flame retardant).
The runner design should be smooth and free of dead corners, and the mold surface is recommended to be chrome-plated.
5. Key Considerations
Processing temperature: Strictly prohibit exceeding 210°C to prevent material degradation.
Cleaning requirements: The equipment must be thoroughly cleaned when changing materials.
Flame-retardant synergy: Synergists may be appropriately added to enhance flame-retardant performance.
Recycling: Scrap material can be crushed and reused at a specified ratio (≤30%).
6. Security and Storage
Store in a cool, dry place; ensure adequate ventilation in the processing area; and require operators to wear protective equipment.
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Contact Us
Contract Person: Sara Yuan
Phone: +86-13012750370
WhatsApp: 8613012750370
Email: huapeng1331@outlook.com
Contract Person: Carol Ding
Phone: +86-13176669388
WhatsApp: 8613176669388
Email: hpcarolding@outlook.com
Contract Person:Janee Ding
Phone: +86-155-5037-8008
WhatsApp: 8615969700115
Email: wanbttmi@outlook.com
Address: Approximately 110 meters northwest of the intersection of Jinshan Road and Yanzishan Road in Laiwu District, Jinan City, Shandong Province (Nanmayu Village, Hezhuang Town)
