Metal sheath inorganic matter insulated cable

A metal sheathed, insulated cable technology, used in insulated cables, insulated conductors, cable/conductor manufacturing, etc., can solve the problem of poor flame retardant effect and thermal insulation effect, trouble with flame retardant performance of wires and cables, and a large amount of toxic smoke. problem, to achieve the effect of increasing fire resistance, practical performance, and increasing flexibility

Pending Publication Date: 2021-07-13
广西纵览线缆集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flame retardant performance of PVC wires and cables has always troubled everyone. At present, the flame retardant materials of wires and cables mostly contain halogen. The secondary damage caused by poisoning and dripping is extremely important. At present, domestic research on the flame retardancy of wire and cable sheathing materials mainly focuses on organic phosphorus nitrogen and inorganic hydrates, but the current research results still have flame retardancy and heat insulation. The existing problems such as poor temperature effect, so it is necessary to find a cable sheath material and its preparation method that can solve the above problems

Method used

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  • Metal sheath inorganic matter insulated cable
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  • Metal sheath inorganic matter insulated cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 and figure 2 As shown, a metal-sheathed inorganic insulated cable includes a copper core 1, an inorganic insulating layer 2, an isolation layer 3, a fireproof layer 4, a metal sheath 5 and a plastic sheath 6, and the copper core 1 has several bundles, The inorganic insulating layer 2 and the isolation layer 3 are wrapped sequentially on the outer layer of the copper core 1 from the inside to the outside, and the wrapped inorganic insulating layer 2 and the cable core of the isolation layer 3 are twisted into a twist shape while heating the isolation layer 3 to generate Bonding fixes multiple bundles of copper cores. The fireproof layer 4 is wrapped around the twisted cable core. The metal sheath 5 is a metal tube connected by metal wires. The metal sheath 5 is wrapped in the Outside the fireproof layer, the plastic sheath is wrapped on the outside of the metal sheath, and the entire cable has high strength, high insulation and safety.

[0029] A bundle ...

Embodiment 2

[0034] A metal-sheathed inorganic material insulated cable, the preparation method of which comprises the following steps:

[0035] (1) Copper core preparation: Take multiple bundles of copper cores, twist the outer layer of each bundle of copper cores in a spiral shape, take the adhesive and mix it with inorganic powder, and apply it on the surface of each bundle of copper cores to form an inorganic insulating layer , and then extrude the isolation layer and wrap it on the outside of the inorganic insulating layer, and then twist several bundles of copper cores into a twisted shape while heating, so that the surface of the isolation layer is viscous and twisted to form a completed copper core. The inorganic powder includes A 1:1:1 mixture of magnesium oxide, mica flakes, and silicon dioxide, the copper core has 3 strands, and the isolation layer is thermoplastic polyolefin;

[0036] (2) Fireproof layer wrapping: get magnesium hydroxide and sodium silicate, the ratio of magnes...

Embodiment 3

[0039] A metal-sheathed inorganic material insulated cable, the preparation method of which comprises the following steps:

[0040] (1) Copper core preparation: Take multiple bundles of copper cores, twist the outer layer of each bundle of copper cores in a spiral shape, take the adhesive and mix it with inorganic powder, and apply it on the surface of each bundle of copper cores to form an inorganic insulating layer , and then extrude the isolation layer and wrap it on the outside of the inorganic insulating layer, and then twist several bundles of copper cores into a twisted shape while heating, so that the surface of the isolation layer is viscous and twisted to form a completed copper core. The inorganic powder includes A mixture of magnesium oxide, mica flakes, and magnesium hydroxide, the copper core has 5 bundles, and the isolation layer is thermoplastic polyolefin; (2) Fireproof layer wrapping: take magnesium hydroxide and sodium silicate, magnesium oxide and silicic ac...

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Abstract

The invention discloses a metal sheath inorganic matter insulated cable, which comprises a plurality of copper cores, an inorganic insulating layer, an isolating layer, a fireproof layer, a metal sheath and a plastic sheath, and is characterized in that the inorganic insulating layer and the isolating layer sequentially wrap the outer layer of the copper cores from inside to outside; the cable core wrapped with the inorganic insulating layer and the isolating layer is twisted into a twisted shape, the isolating layer is heated to generate bonding so as to fix the multiple bundles of copper cores, the fireproof layer wraps the cable core twisted into the twisted shape, the metal sheath is a metal tube connected with a metal wire in a penetrating mode, the metal sheath wraps the fireproof layer, and the plastic sheath wraps the outside of the metal sheath. The insulated cable provided by the invention has the advantages of good insulating property, high strength, difficulty in damage, easiness in bending and winding and convenience in use.

Description

technical field [0001] The invention relates to the technical field of cable preparation, in particular to a metal-sheathed inorganic material insulated cable. Background technique [0002] Since the advent of wire and cable products, they have brought great convenience and improvement to human life and work. PVC cables have long occupied an important position in wire and cable insulation and protection materials because of their low price and excellent performance. However, the flame retardant performance of PVC wires and cables has always troubled everyone. At present, the flame retardant materials of wires and cables mostly contain halogen. The secondary damage caused by poisoning and dripping is extremely important. At present, domestic research on the flame retardancy of wire and cable sheathing materials mainly focuses on organic phosphorus nitrogen and inorganic hydrates, but the current research results still have flame retardancy and heat insulation. There are prob...

Claims

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Application Information

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IPC IPC(8): H01B7/20H01B7/29H01B13/22
CPCH01B7/20H01B7/292H01B13/22
Inventor 刘小祥杨自昆黄文照黎焕枝黄才雄
Owner 广西纵览线缆集团有限公司
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