LSZH Material & Compound Series
The LSZH Material & Compound Series provides low smoke and zero halogen properties, ensuring high safety and environmental protection for use in public buildings, transportation, and power systems.
Color: Natural, milky white, custom coloring
Density: 0.92–0.96 g/cm³
Application: Original equipment manufacturers (OEMs) and industrial manufacturers requiring low-smoke halogen-free (LSZH) materials include building and infrastructure components, transportation and automotive parts, electronic housings and industrial equipment, pipes, tubing and extruded profiles.
Fire Resistant LSZH Compound
Color: White or light grey particles, can be customized in orange, red, blue
Density: 1.45 – 1.55 g/cm³
Application: Its excellent flame retardant properties make it commonly used in subways and high-rise building cables, medical treatment, data centers, airports and other places with strict restrictions on smoke and toxicity.
Oil Resistant LSZH Compound
Color: Commonly appear as gray, off-white or black particles
Density: 1.35-1.45 g/cm³
Application: Designed to withstand oily, humid, or harsh industrial environments, it is oil-resistant, flame-retardant, low-smoke, halogen-free, and chemically resistant. It is particularly suitable for wiring in oil fields, mines, factories, and electromechanical equipment.
Solar LSZH Compound
Color: Commonly seen as black particles
Density: 1.37-1.39 g/cm³
Application: Designed to withstand oily, humid, or harsh industrial environments, it is oil-resistant, flame-retardant, low-smoke, halogen-free, and chemically resistant. It is particularly suitable for wiring in oil fields, mines, factories, and electromechanical equipment.
LSZH FAQ
What Are Low Smoke Halogen Free (LSZH) Compounds?
ZMS Advanced Material supplies low-smoke halogen-free compound granules made from various polymer resin materials (such as PE, EVA, PO, etc.) as the base material, with the addition of a halogen-free flame-retardant system and functional additives, and precision-processed into finished thermoplastic granules.
✅ Halogen-Free: Contains no halogen elements such as chlorine (Cl) and bromine (Br).
✅ Low Smoke Density: Produces extremely low smoke during combustion, facilitating evacuation and rescue.
✅ Low Toxicity & Low Corrosiveness: This material releases almost no toxic and highly corrosive hydrogen halide gases during a fire, making it safer for equipment and personnel.
These granules can be directly used for extrusion or molding of products such as cable insulation, sheathing, pipes, and electrical components. They are particularly suitable for projects and public places with strict fire protection and environmental protection requirements, such as:
Subways, rail transit
Airports, train stations, hospitals, and shopping malls
High-rise buildings, data centers, and computer rooms
Industrial control cables, communication cables, etc.
What Additives Are Used in LSZH Compounds?
For LSZH materials, in addition to adding halogen-free flame retardants, we add various additives according to different customer application requirements, ensuring that the material not only meets fire resistance requirements but also possesses good processing and performance characteristics.
Common additives include:
Compatibilizers&Grafted Copolymers: Primarily improve the compatibility between inorganic flame retardants and resins, increasing tensile strength, elongation, and flexibility.
Lubricants&Processing Aids: Reduce melt viscosity, improve flowability during extrusion, and reduce wear and melt fracture.
Antioxidants&Heat Stabilizers: Improve the thermal stability of the material during extrusion processing and long-term use, preventing yellowing and performance degradation.
Anti-dripping Agents (in some systems): Suppress dripping under flame, preventing dripping from igniting other objects.
Fillers & Functional Additives: Further optimize mechanical properties, surface finish, cost, and processing stability.
What is the general process flow for manufacturing LSZH material?
This is a crucial issue. Perfect manufacturing processes determine a customer’s initial understanding and choice of our factory. Below, I will give a brief introduction. For more detailed information, please contact us!
Our low-smoke halogen-free compounds are produced using strictly controlled mixing and granulation processes, with oversight throughout the entire process, from raw material selection and precise weighing to twin-screw extrusion and quality inspection. This ensures that we provide our customers with stable halogen-free performance, consistent low-smoke characteristics, and reliable processing performance.
Raw Material Selection: We select qualified polymer carriers, magnesium hydroxide, aluminum hydroxide, and functional additives that comply with RoHS/REACH and other environmental regulations.
Precise Weighing and Formulation: Raw materials are precisely weighed according to the formulation to ensure consistent performance across each batch.
Efficient Mixing and Compounding: Premixing is performed using an internal mixer or high-speed mixer, followed by melt mixing and dispersion in a twin-screw extruder.
Extrusion and Granulation: The melt is extruded and cooled before being cut into uniform granules for easy transport, storage, and feeding.
Quality Control: Testing is conducted on density, tensile strength, elongation, limiting oxygen index (LOI), smoke opacity, halogen content, etc., to ensure that each batch meets customer standards such as IEC, EN, BS, UL, or local regulations.
Why Choose Our LSZH Compounds?
100% Halogen-Free: The formula is chlorine and bromine-free, suitable for projects with stringent Low Smoke Halogen-Free (LSZH) requirements.
Low Smoke and Low Toxicity: Significantly reduces smoke emissions and toxic gas release during fires, improving the safety of personnel and equipment.
High Flame Retardancy: Customizable to various flame-retardancy ratings and cable standards.
Excellent Processability: Ready-to-use granules with good extrusion stability, suitable for cable insulation, sheathing, and other profiles.
Customizable Formulations: We can adjust hardness, flexibility, color, mechanical properties, and flame-retardant ratings to meet your requirements and equipment conditions.
Focus on B2B and Bulk Orders: Focused on industrial customers and OEM projects, supporting continuous production and long-term cooperation.
If you are looking for a reliable low-smoke halogen-free compound solution for cables or other applications, please tell us your standards, applications, and processing conditions, and we will recommend or develop the most suitable halogen-free compound for you.
About LSZH Manufacturing Process
ZMS Advanced Material low-smoke, zero-halogen (LSZH) compounds are designed for fire resistance, environmental friendliness, and long-term performance.
The manufacturing process for these LSZH polymers utilizes high-precision formulations, an intelligent mixing system, and twin-screw extrusion technology to ensure perfect dispersion of flame retardants, stabilizers, and the polymer base. A robust automated quality control system rigorously monitors each step to maintain consistent color, density, and mechanical strength.
Unlike traditional PVC compounds, ZMS LSZH production line is completely halogen-free, uses environmentally friendly, non-toxic raw materials, and produces no corrosive gases.
Each batch undergoes rigorous testing for oxygen index, tensile strength, elongation, heat aging, and flame retardancy before delivery.
Choose ZMS LSZH compounds—the perfect combination of safety and innovation, with quality woven into every particle.