Light flame-retardant plate shielding flame-retardant composite layer, filling layer and manufacturing method thereof

Abstract

The invention discloses a light flame-retardant plate shielding flame-retardant composite layer, a filling layer and a manufacturing method thereof. The shielding control cable comprises cable cores and an outer insulated layer coating the cable cores. Multiple conductors are stranded and then coated with an inner shielding layer to form each cable core; an inner insulated layer is arranged outside the inner shielding layer; an outer shielding layer is arranged outside the inner insulated layer; a flame-retardant composite layer is arranged outside the outer shielding layer; multiple cable cores are mutually surrounded and distributed uniformly and circumferentially; an isolation sleeve is arranged outside the multiple cable cores; the isolation sleeve is coated with a filling layer; the filling layer is coated with a protection later; and the outer insulated layer coats the protection layer. In the case of cabling, the cable has a round and even appearance; the mechanical strength is high, the surface sealing performance is good, and advantages of pressure resistance and light weight can be provided; and as the cable also comprises the flame-retardant composite layer formed by a nano material flame-retardant agent and the present flame-retardant agent in a mixing mode, the flame-retardant performance and the heat-resistance performance are achieved, and the fire-resistance time is long.

Description

technical field [0001] The invention relates to the field of cable material preparation, in particular to a light-weight flame-retardant disk shielding flame-retardant composite layer, a filling layer and a preparation method thereof. Background technique [0002] There are three main types of traditional cable fillers currently on the market: 1) Fan-shaped filler strips extruded from cross-linked polyethylene waste; 2) Polypropylene (PP) mesh filler ropes; 3) PVC or rubber tube fillers strip. Due to their material, formula or shape, these kinds of filling strips have the following defects: Fan-shaped filling strips extruded from cross-linked polyethylene waste: the filling strips use cross-linked polyethylene waste crushed pellets as the base material, adding adhesive Agents, fillers, and colorants are extruded. Since cross-linked polyethylene is a thermosetting plastic, its recycled waste has poor melting properties during secondary processing, and a large amount of adhe...

AI Technical Summary

Problems solved by technology

Due to their material, formula or shape, these kinds of filling strips have the following defects: Fan-shaped filling strips extruded from cross-linked polyethylene waste: the filling strips use cross-linked polyethylene waste crushed pellets as the base material, adding adhesive Agents, fillers, colorants extruded

Since cross-linked polyethylene is a thermosetting plastic, its recycled waste has poor melting properties during secondary processing, and a large amount of adhesive needs to be added to form it. Therefore, the filling has the following defects: rough surface, uneven size and specification, and cannot be fully filled The cable gap ensures the roundness of the cable when it is cabled; the tensile strength is small, and it is easy to break when the cable is filled, which affects the production speed; the weight is too large to be easy to operate; it is easy to absorb moisture during storage, which brings hidden dangers to the quality of the product ;

[0003] Existing phosphates have flame retardant properties and can be used as flame retardants, but phosphates are easy to absorb moisture and agglomerate, and are easy to decompose when heated