Low-smoke corrosion-resistant cable jacket

Abstract

The invention discloses a low-smoke corrosion-resistant cable jacket. The cable jacket comprises the following raw materials in parts by weight: 100 parts of linear low density polyethylene, 20-30 parts of chlorinated polyvinyl chloride resin, 2-4 parts of mono-alkoxy titanate, 4-5 parts of polyacrylic rubber, 0.6-0.8 part of methyl tin mercaptide, 0.4-0.6 part of stearic acid, 3-5 parts of magnesium hydroxide, 5-7 parts of micro-encapsulated red phosphorus, 0.4-0.6 part of bisphenol A, 2-4 parts of a flexible modifier, 3-4 parts of an antioxidant, 2-4 parts of a preservative and 7-9 parts of a silica sol. The low-smoke corrosion-resistant cable jacket disclosed by the invention can effectively improve the whiting phenomenon of a cable jacket material and improve the low-temperature resistance of the material. By adding the preservative, the corrosion resistance of the material is improved. The cable jacket has low-smoke and halogen-free properties. The properties of the protective tube prepared by the cable jacket of the present invention, for example, the compressive strength, the tensile strength, the impact resistance, the heat resistance, the flame resistance and the like satisfy the property requirements on cable protective tubes well.

Description

technical field [0001] The invention belongs to the technical field of cable sheath materials, in particular to a low-smoke anticorrosion cable sheath. Background technique [0002] A cable is usually a rope-like cable made of several or several groups of wires twisted together with at least two wires in each group. Each group of wires is insulated from each other and is often twisted around a center to form a highly insulating covering. layer, the cable needs the cable sheath for extrusion protection, and the cable sheath is easily eroded by the external environment. The main material of the outermost layer of traditional cables is polyvinyl chloride, ie PVC, and contains halogenated flame retardants. When the material is burned, it generates a large amount of smoke and produces a large amount of corrosive and toxic gases (such as chlorine, HBr, etc.), which has an adverse effect on fire extinguishing and personnel escape, making fire rescue more difficult. The corrosive ...

AI Technical Summary

Problems solved by technology

When the material is burned, it generates a large amount of smoke and produces a large amount of corrosive and toxic gases (such as chlorine, HBr, etc.), which has an adverse effect on fire extinguishing and personnel escape, making fire rescue more difficult.

The corrosive gas released at the same time causes the electrical appliances at the fire site to be corroded and destroyed

In addition, halogenated flame retardants will accumulate toxicity and produce carcinogens during production, transportation, storage, and recycling of waste products

The high hardness structure of polypropylene used in existing cable sheath materials makes the prepared cable material not soft enough, and there is obvious stress whitening phenomenon when it is bent, and its low temperature resistance performance is different from that of polyethylene cable material. big gap

Thus limiting its further expansion and application in the field of wire and cable