4 Pieces of Advice to Choose an LSZH Compound

## **4 Pieces of Advice to Choose an LSZH Compound**.

When selecting a Low Smoke Zero Halogen (LSZH) compound, ensuring you make an informed choice can significantly impact the efficiency, safety, and longevity of your projects. LSZH compounds are crucial in environments where fire safety and reduced toxicity are paramount. Below are four pieces of advice to help you choose the right LSZH compound for your specific needs.

### **1. Assess Flame Retardancy and Smoke Emission**.

The prime reason for using LSZH compounds lies in their ability to minimize smoke and toxic halogen emissions during combustion.

- **a. Check Flame Retardant Properties:** Ensure that the LSZH compound meets or exceeds industry standards for flame retardancy. Typically, these compounds should pass stringent fire resistance tests such as UL-94 and IEC 60332.

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- **b. Evaluate Smoke Emission Levels:** Opt for compounds that have been rigorously tested to produce low smoke emission. Look for certifications like ASTM E662 (Standard Test Method for Specific Optical Density of Smoke).

By choosing a compound with superior flame retardant properties and low smoke emissions, you can enhance the safety profile of the cables and materials you're using.

### **2. Ensure Halogen-free Composition**.

The defining characteristic of LSZH compounds is their lack of halogens, which significantly reduces toxicity during a fire.

- **a. Examine Material Composition:** Scrutinize the chemical composition of the LSZH compound. Ensure that it does not contain any halogens such as chlorine, fluorine, bromine, or iodine.

- **b. Certifications and Testing:** Choose suppliers who provide comprehensive certification and testing data to verify the halogen-free nature of their compounds. Look for compliance with standards like IEC 60754-1/2 (Halogen-free Tests).

A halogen-free compound ensures that, in the event of a fire, the release of corrosive and toxic gases is minimized, thus safeguarding both people and electronics.

### **3. Consider Mechanical Properties**.

The mechanical properties of an LSZH compound can influence its application and durability.

- **a. Tensile Strength and Elongation:** Ensure that the LSZH compound possesses adequate tensile strength and elongation properties to withstand mechanical stress and strain during installation and use.

- **b. Flexibility and Toughness:** Evaluate the compound’s flexibility and toughness, especially if the application involves frequent bending or movement. It’s crucial that the material does not become brittle over time.

By focusing on the mechanical robustness of the LSZH compound, you can improve the longevity and reliability of your installations.

### **4. Verify Compatibility and Processing Requirements**.

The LSZH compound you choose needs to be compatible with your existing equipment and processing techniques.

- **a. Processing Conditions:** Understand the processing conditions required for the LSZH compound, such as extrusion temperature and cooling rates. Some LSZH materials may require specific processing technology or modifications.

- **b. Compatibility with Existing Systems:** Ensure that the compound is compatible with your cable jackets, insulation, and other materials used in your applications. Incompatibility can lead to processing difficulties or degraded performance.

By verifying compatibility and processing requirements beforehand, you can ensure a smooth integration of the LSZH compound into your manufacturing or installation processes.

### **Conclusion**.

Choosing the right LSZH compound involves a careful assessment of its flame retardancy, smoke emission, halogen-free composition, mechanical properties, and compatibility with existing systems. By following these four pieces of advice, you can select a compound that not only meets regulatory requirements but also enhances the overall safety and performance of your projects. Prioritize thorough research and consult with suppliers to ensure that you are making the most informed and effective choice.

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