Low-temperature-resistant and high-temperature-resistant flame-retardant wire cable

Abstract

The invention relates to a low-temperature-resistant and high-temperature-resistant flame-retardant cable. The cable is prepared from natural rubber, ethylene propylene diene monomer, nano aluminum hydroxide, calcium carbonate, antimonous oxide, a zinc-calcium stabilizer, expanded graphite, carbon black, trioctyl trimellitate, dioctyl sebacate and potassium tetratitanate whiskers. The cable provided by the invention has relatively good mechanical properties and also has good flame-retardant and insulating properties. The cable has the characteristics of cold resistance and high temperature resistance, and is suitable for an environment with large temperature change. The use amounts of a flame retardant and a plasticizer are not large, so that the formula cost of the cable is relatively low, and the cable can better adapt to large-scale production.

Description

technical field [0001] The invention relates to the technical field of wire materials, in particular to a low-temperature-resistant flame-retardant wire and cable and a preparation method thereof. Background technique [0002] A cable is an electrical energy or signal transmission device, usually composed of several wires or groups of wires. A signal cable is a signal transmission tool. Generally, the signal transmitted by a signal cable is very small. In order to avoid signal interference, there is a layer outside the signal cable. Shielding layer, the signal cable in the prior art has a simple structure and poor high and low temperature resistance. In a high temperature environment, it may cause its internal structure to soften and deform, resulting in short circuit failure of the cable. In a low temperature environment Under normal circumstances, the internal wire core may be broken due to thermal expansion and contraction, making it unsuitable for environments with large...

AI Technical Summary

Problems solved by technology

[0002] A cable is an electrical energy or signal transmission device, usually composed of several wires or groups of wires. A signal cable is a signal transmission tool. Generally, the signal transmitted by a signal cable is very small. In order to avoid signal interference, there is a layer outside the signal cable. Shielding layer, the signal cable in the prior art has a simple structure and poor high and low temperature resistance. In a high temperature environment, it may cause its internal structure to soften and deform, resulting in short circuit failure of the cable. In a low temperature environment Under the environment, the internal wire core may be broken due to thermal expansion and contraction, which cannot be applied to environments with large temperature changes.

[0003] In order to meet the requirements of cable use in cold regions, the cold resistance of the cable material must be guaranteed. At present, the main method is to add cold-resistant plasticizers such as dioctyl sebacate and dioctyl adipate to improve the cold resistance of the product, but this type The compatibility between plasticizer and resin is not good, and it is easy to precipitate. At the same time, the plasticizer introduced in PVC during processing makes it flammable, and the black smoke and toxic gas generated during combustion seriously endanger human life safety. Therefore, the flame retardant research on PVC is also of great significance. In conventional production, flame retardants such as antimony trioxide and zinc borate are usually added to improve the flame retardant performance of the product. However, the softening point of the product is reduced by adding a large amount of plasticizer. The greater the amount added, the easier it is for the plasticizer to precipitate from the resin, making the product less flame retardant. To achieve the ideal flame retardant effect for cold-resistant cable materials, a large amount of composite flame retardant must be added, and the increase of composite flame retardant It will also reduce the cold resistance of the product, thereby forming a vicious circle and increasing the cost of the formula.

[0004] In summary, there is currently a lack of a low-temperature and high-temperature flame-retardant wire and cable and its preparation method in the field

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