Chemical Formula: (C₂H₄)n

Cross-Linking Degree: Adjustable

Heat Resistance Range: -40°C to 90°C (long-term)

Compressive Strength: High

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Product Detail

Cross-linked polyethylene (XLPE) is a modified form of polyethylene (PE), achieved through a cross-linking process that improves its material properties. By using high-energy radiation (such as gamma rays or electron beams) or cross-linking agents, polyethylene’s molecular chains are interconnected into a three-dimensional network, resulting in significant enhancements in its mechanical strength, chemical resistance, creep resistance, electrical properties, and heat tolerance. XLPE’s heat resistance is especially notable, as it increases the material’s thermal stability from 70°C to over 100°C, expanding its range of applications significantly.

XLPE is widely used in electrical cables, pipes, films, and foam products, offering excellent durability and performance in various industries. In summary, cross-linked polyethylene (XLPE) represents a significant advancement in polymer materials, offering a perfect blend of enhanced mechanical properties, superior heat resistance, and excellent chemical stability. This innovative material is ideal for a wide range of applications, including electrical cables, pipes, and foamed plastics, providing long-lasting performance in demanding environments. Whether you're looking to improve the durability of your products or require advanced heat-resistant solutions, XLPE is an outstanding choice.

If you are interested in incorporating XLPE into your projects, please feel free to contact us. Our team is ready to assist you with any inquiries and provide timely support within 24 hours. For any questions or specific needs regarding XLPE, don’t hesitate to reach out. We are dedicated to offering customized solutions to meet your unique requirements and help you achieve the best results in your applications.

- Product Type: Cross-Linked Polyethylene (XLPE)
- Material: High-Quality Polyethylene, Cross-linked through Radiation or Chemical Methods
- Heat Resistance: Long-term operating temperature: up to 90°C, Short-circuit temperature: up to 250°C
- Thickness: Customizable
- Density:Customizable, 0.033g/cm³- 0.285g/cm³(±0.050)
- Size: Customizable, Maximum Roll Size: 1200mm wide
- Hardness: Shore D 18-85(depending on cross-linking degree)
- Electrical Insulation: Excellent dielectric properties, low dielectric loss factor

- Electrical Cables: XLPE is widely used for cable insulation, offering high heat resistance and excellent electrical properties. It can operate at temperatures of up to 90°C for long periods, and withstand short-circuit temperatures of up to 250°C. XLPE cables are also safer, as they produce non-toxic combustion products (water and carbon dioxide), unlike PVC cables that release harmful gases when burned.
- Pipes: XLPE is used to produce pipes with excellent heat resistance, chemical resistance, and durability, making them suitable for water and gas distribution systems.
- Foamed Plastics(XPE): XLPE foam materials are lightweight, pressure-resistant, and offer good soundproofing and thermal insulation, making them ideal for construction, packaging, and transportation applications.
- Heat Shrink Tubing and Films: XLPE is used to produce heat-shrinkable tubing and films that can tightly conform to objects when heated, offering secure packaging and protection for electronics and other sensitive items.

(1) Cross-Linking Principle:

Polyethylene (PE) is a polymer composed of linear molecular chains. When heated, the intermolecular forces weaken, causing the material to deform, which limits its heat resistance. Cross-linking polyethylene forms chemical bonds between the molecules, creating a three-dimensional network structure that prevents molecular displacement and significantly improves its heat resistance and mechanical properties.

Cross-linking can be achieved through physical methods (such as radiation) or chemical methods, with common techniques including high-energy irradiation, peroxide cross-linking, and silane cross-linking.

(2) Cross-Linking Methods:

-IXPE Physical Cross-Linking (Radiation Cross-Linking): This method involves irradiating polyethylene products (such as wire coatings, films, and thin-walled pipes) with gamma rays or high-energy electrons. The radiation creates free radicals in the polymer chain, initiating cross-linking. This method is beneficial for controlling the cross-linking degree and ensuring high-quality production.

- XPE Chemical Cross-Linking (Peroxide Cross-Linking): This technique uses peroxides to generate free radicals through thermal decomposition, which then triggers the cross-linking reaction, forming a network structure. This method is commonly used in medium-to-high voltage cable production, where enhanced mechanical and electrical properties are required.

- Silane Cross-Linking: Silane cross-linking uses vinyl silane compounds to react with molten polyethylene, creating a silane-grafted polymer. The polymer then undergoes a water-induced hydrolysis reaction that results in a cross-linked structure. This method is cost-effective, easy to control, and produces high-quality, durable products.

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Cross-Linked Polyethylene (XLPE)

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