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Main characteristics and distinguishing skills of high-temperature silica gel connecting wire
Time:2023-10-08 Read: 881

High-temperature silica gel connecting wireIts main characteristics are high temperature resistance, insulation, flame resistance, acid and alkali resistance, aging resistance, weather resistance, high strength, high modulus, antistatic, and smooth appearance. It has many types, such as fluoroplastic insulated high temperature wire, silicone rubber insulated high temperature wire, high temperature electronic wire, silicone rubber insulated braided wire, multi-core high temperature cable, PEEK wire, mineral insulated fire-resistant cable, silicone rubber high voltage wire, PTFE high voltage wire, and PTFE wire Nylon sheathed wire, mica high temperature wire, aircraft wax wire.

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The quality of high-temperature silica gel connecting wire can be seen at a glance from the appearance of wires and cables. The appearance requirements of high temperature silica gel connecting wire are smooth, round, uniform luster, no visible sundries, mechanical damage, no flattening, no deviation from the core wire (within the specified deviation), bubble sand hole, bamboo knot, twisted shape, obvious particles, etc. It can be seen that the thickness of the sheath has a certain impact on the quality of the high-temperature silica gel connecting wire. Of course, the thickness of the sheath does not meet the standard, and the thickness exceeds the standard.


The material properties of high-temperature silica gel connecting wire are not reflected by the thickness, but by the standard requirements. If one indicator fails to meet the standard, it will directly affect the quality of high-temperature silica gel connecting wire. After the high temperature silica gel connecting wire is laid, it will generate heat energy if it is electrified for a long time. The allowable working temperature of the conductor is 70 ℃, and the allowable long-term working temperature of the high-temperature silica gel connecting wire is 180 ℃. In summer, the working temperature will rise. These temperatures will dissipate through the outer jacket. The thickness of the sheath will increase, and the heat energy is difficult to dissipate, which will affect the service life of the high-temperature silica gel connecting wire. Under the effect of heat, a series of physical and chemical changes will occur in the insulation layer, which will lose its original excellent performance, resulting in a significant decline in insulation performance, even short circuit, affecting the normal operation of the unit.


Generally, the temperature resistance range of PVC wire is - 15~80, while the high-temperature silica gel connecting wire can reach - 60~200. PVC wires have a short service life, generally about two years, poor flexibility, poor aging resistance, and are easy to crack in the sun. They are suitable for indoor lamps and household appliances. PVC wires are hard, smooth and bright. The cost and compressive strength of PVC wires of the same specification are far lower than those of high-temperature silica gel connecting wires, and the bending recovery ability of PVC wires is poor. Once bent and folded, it is difficult to restore the original appearance. However, high temperature silica gel connecting wire also has disadvantages, such as poor tear resistance of sheath and high manufacturing cost.

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