Cable material and preparation method thereof

Abstract

The invention discloses a cable material, which comprises the following components (by weight): 20-30 parts of epoxy resin, 15-20 parts of polyolefin resin, 15-35 parts of glass fibre, 5-8 parts of ceramic zinc borate, 15-35 parts of a halogen-free intumescent flame retardant, 3-7 parts of a compatilizer, 0.1-0.2 part of an anti-dripping additive, 4-7 parts of silicone oil, 2-3 parts of a lubricant, 0.5-2 parts of an antioxidant and 1-2 parts of an antibacterial agent. After the above components undergo processes of kneading, extruding and granulating, drying and the like, the cable material can be obtained. The cable material has good flame resistance and fire resistance as well as excellent moisture resistance and water absorption resistance.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a cable material and a preparation method thereof. Background technique [0002] The existing fire-resistant cables at home and abroad mainly include magnesium oxide mineral insulated fire-resistant cables and mica tape-wrapped inorganic-insulated fire-resistant cables. Although mineral insulated fireproof cables have good fire resistance, their manufacturing process is complicated, the production cost is high, the length of production is limited, and the cables are very hard and cannot be bent, the joints are complicated, the construction is very difficult, and it is difficult to be widely used. Although the mica tape wrapping refractory cable has a simple process and unlimited manufacturing length, there is a common disadvantage of the mica tape. After high temperature combustion, the mechanical strength of the mica tape is greatly reduced and becomes brittle. It is ...

AI Technical Summary

Problems solved by technology

Although mineral insulated fireproof cables have good fire resistance, their manufacturing process is complicated, the production cost is high, the length of production is limited, and the cables are very hard and cannot be bent, the joints are complicated, the construction is very difficult, and it is difficult to be widely used

Although the mica tape wrapping refractory cable has a simple process and unlimited manufacturing length, there is a common disadvantage of the mica tape. After high temperature combustion, the mechanical strength of the mica tape is greatly reduced and becomes brittle. It is easy to pulverize and fall off after being subjected to severe vibration, causing Poor refractory effect

Moreover, because the mica tape is easy to drop powder when it is rubbed, a large amount of dust at the wrapping site will pose a threat to the health of the workers.

In recent years, researchers have explored and researched ceramic silicone rubber insulated fire-resistant cables, but because the cable manufacturing process requires special mixing, extrusion and vulcanization equipment, the process is complicated, and it is difficult to strike a balance between the strength of the insulating layer and the fire-resistant performance. , the degree of ceramicization is difficult to pass the water and fire resistance test of fire-resistant cables