Silane Cross-Linked XLPE Polymer Compound Insulation

Silane Cross-Linked XLPE Polymer Compound

Silane-crosslinked polyethylene (XLPE) compound pellets, also known as moisture-crosslinked polyethylene (PEX or XLPE), are high-performance insulation materials widely used in the manufacture of insulation or jacketing for low-voltage and communication cables. During processing, the compound is grafted with silane molecules onto polyethylene chains, which are then crosslinked using moisture and heat. This process creates a stable three-dimensional network structure, enhancing the polymer's thermal, electrical, and mechanical properties. Combined with excellent processability and durability, it is an ideal material for low-voltage cable insulation.

Produced in accordance with IEC 60502, IEC 60811, ASTM D1248, and GB/T 11017 standards, these cables undergo rigorous testing for dielectric strength, elongation, and thermal aging properties.
Compliant with ISO 9001:2015 and ISO 14001:2015 certifications and environmental requirements, the company meets RoHS and REACH requirements for global cable manufacturing applications.

Product Detailed Specifications

Appearance

Silane-crosslinked XLPE compounds are supplied in the form of homogeneous, free-flowing granules designed for extrusion.
Form: Cylindrical or spherical granules
Color: Natural (creamy white) or black (UV-resistant version)
Odor: Odorless, non-toxic
Packaging: 25 kg aluminum-plastic composite moisture-proof bags, 500 kg or 1000 kg bulk bags available upon request
Storage: Store in a dry, cool, well-ventilated area below 30°C. Avoid moisture before extrusion to prevent premature crosslinking.

Technical Parameters

Item	Typical Value	Test Method
Density	0.92 – 0.94g/cm³	ISO 1183
Melt Flow Index (190°C/2.16kg)	0.5 – 2.0g/10min	ISO 1133
Tensile Strength	≥ 15MPa	ISO 527
Elongation at Break	≥ 400%	ISO 527
Volume Resistivity	≥ 1×10¹⁴Ω·cm	IEC 60093
Dielectric Strength	≥ 25kV/mm	IEC 60243
Thermal Aging (135°C, 7 days)	Retention ≥ 70%	IEC 60811
Continuous Operating Temperature	90°C	—
Short Circuit Temperature (5s)	250°C	—

Common Models & Specifications

Grade	Application	Cross-linking Type	Color	Recommended Voltage Class
S-XLPE-90	General-purpose insulation	Silane moisture cross-linking	Natural	0.6/1kV
S-XLPE-110	Heat-resistant insulation	Silane moisture cross-linking	Natural / Black	Up to 10kV
S-XLPE-SHEATH	Sheathing compound	Silane cross-linked	Black	Cable sheath protection
S-XLPE-FR	Flame-retardant type	Silane + FR modified	Natural	Special industrial cables

Product Feature

Thermal stability: Continuous operating temperatures up to 90°C and short-circuit temperatures up to 250°C ensure long service life.
Excellent electrical properties: High dielectric strength and insulation resistance make it ideal for low-voltage cables.
Excellent processability: Melt flow and extrusion stability ensure uniform insulation thickness and a smooth cable surface.
Environmental resistance: This includes moisture resistance, oxidation resistance, and UV resistance thanks to the addition of a black additive.
Environmentally friendly and reliable: Silane crosslinking eliminates the need for a high-pressure reactor, making it energy-efficient and environmentally friendly.

Applications

Silane-crosslinked XLPE compounds are widely used for insulation and jacketing in a variety of cables, including:
Low-voltage power cables (0.6/1 kV)
Control and instrumentation cables
Communication cables
Automotive and building cables
Renewable energy cables (solar and wind)
Due to their excellent heat aging resistance and environmental adaptability, these materials are well-suited for indoor, outdoor, underground, and conduit installations.

ZMS Material Services & Logistics

Professional Technical Support
ZMS’s experienced materials engineers provide guidance on compound selection, cable insulation design, and custom formulations for various grades. We ensure that every batch meets your electrical, mechanical, and fire safety requirements.

Quality Assurance & After-Sales Service
Each batch of material pellets undergoes rigorous quality control, including density, dielectric strength, and flame retardancy testing. Our after-sales team is available to provide consultation, troubleshooting, and replacement services if necessary.

Customized Packaging Solutions
ZMS Material compounds are supplied in pellet or granular form and are typically packaged in moisture-proof polyethylene bags, kraft paper drums, or plastic drums. We can also provide custom packaging with custom graphics to protect the integrity of the material during transportation and storage.

Flexible Shipping & Delivery
We work with reliable logistics partners to offer global shipping services, including container, pallet, or bulk shipping. Dedicated personnel and meticulously planned shipping procedures prevent moisture, heat, or mechanical damage, ensuring the compound arrives in optimal condition.