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Material Comparison of Cold Shrinkable Cable Accessories

2022-04-27
EPDM material and silicone rubber material are two kinds of raw materials widely used in Cold Shrinkable Cable Accessories at the present stage. They have their own advantages and disadvantages and are suitable for different scopes.  

Advantages of EPDM material Cold Shrinkable Cable Accessory:

The Elbow Connector made of EPDM material and rubber injection process has many advantages: full insulation, full shielding, full sealing and so on. These characteristics of EPDM material effectively solve the electric field stress concentration in the cable joint part, effectively solve the problems of the cable is easy to be damp, the cable bears a certain mechanical stress, and the electrical stress is too concentrated at the cable shielding layer disconnect. And the Cold Shrinkable Cable Accessories made of EPDM material are very convenient for installation and disassembly. EPDM material itself is non-toxic, and the products after combustion are also non-toxic, avoiding environmental pollution, so now more and more manufacturers are beginning to use EPDM material.

Disadvantages of EPDM material Cold Shrinkable Cable Accessory:

The biggest disadvantage of EPDM materials is that they cannot tolerate organic solvents that also use hydrocarbons.


Advantages of Silicone Rubber material Cold Shrinkable Cable Accessories:


The insulation performance of Cold Shrinkable Cable Accessories made of silicone rubber is particularly good. When the product is affected by moisture, frequency change or surrounding temperature rise, its insulation change is very small. And the silicon dioxide generated by silicone rubber material after combustion is also a material with good insulation and flame retardant performance, so the use of silicone rubber material in high-pressure occasions is very safe and reliable. In addition silicone rubber material has good flexibility, excellent high and low temperature performance, good ultraviolet resistance and oxidation resistance, and is different from the EPDM material is that it can tolerate all kinds of organic solvent, therefore in the application of Cold Shrinkable Cable Accessories compared with EPDM material more widely, especially in the application of prefabricated type Cold Shrinkable Cable Accessories.

Disadvantages of Silicone Rubber material Cold Shrinkable Cable Accessories:

The mechanical strength of silicon rubber material is general, and its scratch resistance, waterproof performance and moisture resistance are not as good as THAT of EPDM material. Moreover, once the silicone rubber formula is inappropriate, it is easy to lead to the problem that the product is not easy to disassemble after installation, which is also the main reason why many cable manufacturers choose EPDM material. The biggest disadvantage of silicone rubber material is that the by-products such as formaldehyde and quartz generated after explosion or combustion are toxic gases, polluting the surrounding air.

Every raw material has its own advantages and disadvantages, and the raw materials of Cold Shrinkable Cable Accessories are no exception, but when using them, we should try to make the best use of their advantages.


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