GuangDong Advanced Thermoplastic Polymer Technology Co., Ltd.
GuangDong Advanced Thermoplastic Polymer Technology Co., Ltd.
News
Check out the latest ATP Polymer news and videos

What is the Melting Point of Cross-linked Polyethylene Cable?

The physical properties of cross-linked polyethylene cables are significantly changed after being cross-linked by silane.


1. The heat resistance of cross-linked polyethylene cable is improved


Since the cross-linked polyethylene cable is a macromolecule, it is infusible and insoluble, and the heat resistance is significantly improved.


Low cross-linking degree, Vicat softening point changes little; high cross-linking degree, Vicat softening point can be increased by 30 ℃ ~ 40 ℃; long-term use temperature of cross-linked polyethylene cable is 95 ℃ ~ 100 ℃.


The cross-linked polyethylene cable with a molecular weight of 200,000 has only 12 to 13 silane monomers connected to each molecular chain, so the distance between the cross-linking points of the Silane Crosslinking LSZH cable is large. The flexibility of the si-c-bond is good, so the cross-linked polyethylene cable has good low temperature resistance and can be used at -50°C or even -70°C.


In addition, because the molecular structure of silane cross-linked polyethylene cable is different from the intermolecular -c-c-crosslinking bond usually formed by peroxide crosslinking, its three siloxy groups can undergo hydrolysis and condensation reaction, which can form a three-dimensional network crosslinking. Therefore, its thermomechanical properties are generally better than those of peroxide-crosslinked polyethylene cables with a -c-c-planar structure.


Even if the crosslinking degree of silane crosslinked polyethylene cable is 15%~20% lower than that of peroxide crosslinking, the heat distortion temperature of the two is still comparable.


2. Excellent chemical resistance of cross-linked polyethylene cable


cross-linked polyethylene cables have better chemical resistance than ordinary cross-linked polyethylene cables. On the one hand, the strength is improved after cross-linking. The long chains continuously enter the tightly packed platelet lattice, thus increasing the number of linking molecules between the crystals. In addition, the long-chain branch entanglement in the cross linked polyethylene structure strengthens the amorphous region between the wafers and improves the environmental stress resistance, especially at 100°C. ℃ below the higher temperature range.


3. Outstanding electrical insulation properties of cross-linked polyethylene cables


The cross-linked polyethylene cable has fewer crystalline areas, uniform density, and the introduction of non-polar -si-o-bonds and -si-c-bonds, making its electrical insulation basically unchanged, so it is still a good insulating material. And the insulation is still high at higher temperatures and harsh chemical media, and is often used for cable shielding.

What is the Melting Point of Cross-linked Polyethylene Cable?

ATP Polymer News Recommendation

19 Nov, 2023
Sealed for Success: Thermoplastic Polyurethane Suppliers for Gasket and Sealing Solutions
When it comes to industrial applications, the importance of reliable gaskets and sealing solutions cannot be overstated. In this blog, we delve into the world of Thermoplastic Polyurethane (TPU) and t...
17 Nov, 2023
Navigating the Waves: Thermoplastic Polyurethane Suppliers in Marine Applications
The marine industry is an ever-evolving sector, constantly looking for innovative solutions to enhance the durability, flexibility, and functionality of marine equipment. One material that has proven ...
15 Nov, 2023
Streaming Quality: TPU Cable Jacket in Audio-Visual Cabling
In the world of audio-visual technology, streaming quality plays a crucial role in delivering immersive experiences to audiences. A key component that contributes to ensuring uninterrupted streaming i...
13 Nov, 2023
Secure Communications: TPU Cable Jacket for Telecommunications
In today's digital age, secure communication has become an integral part of our lives. Whether it is for personal or professional use, ensuring the safety and integrity of our communications is of...