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CN-122025255-A - Moistureproof household decoration refractory wire with longitudinal water blocking function and preparation method thereof

CN122025255ACN 122025255 ACN122025255 ACN 122025255ACN-122025255-A

Abstract

The invention discloses a moistureproof household decoration refractory wire with a longitudinal water blocking function and a preparation method thereof, and relates to the technical field of wires, the moistureproof household decoration refractory wire comprises a wire body, wherein the wire body sequentially comprises a wire core, a longitudinal water blocking filling layer, a refractory layer, a radial moisture-proof layer, an insulating layer and an outer sheath layer from inside to outside, the surface of each oxygen-free copper wire of the wire core is coated with a semiconductive resistance water gel, so that moisture can be primarily blocked from diffusing along the axial direction of the surface of the copper wire, and meanwhile, the semiconductive water blocking gel has a semiconductive characteristic, can avoid partial discharge and improves the electricity utilization safety; the gaps of the stranded conductor bundles are filled with a mixture of semiconductive water-blocking yarns and water-swelling water-blocking powder, when moisture permeates from the end of the electric wire or the damaged part of the outer sheath, the water-blocking powder rapidly absorbs the moisture and swells, and the water-blocking powder cooperates with the semiconductive water-blocking yarns to rapidly fill the gaps of the conductor bundles, so that a compact longitudinal water-blocking barrier is formed, the moisture is prevented from further diffusing along the axial direction of the electric wire, and the moisture is prevented from invading between the wire core and each subsequent layer.

Inventors

  • AI WEI
  • YANG ZHUMING
  • XU QIFA
  • LI YANGSHUI

Assignees

  • 中辰电缆(江西)有限公司

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. The moistureproof household decoration fireproof electric wire with the longitudinal water blocking function comprises an electric wire main body (1), and is characterized in that the electric wire main body (1) sequentially comprises a wire core (11), a longitudinal water blocking filling layer (12), a fireproof layer (13), a radial moisture-proof layer (14), an insulating layer (15) and an outer sheath layer (16) from inside to outside, and all the layers are tightly attached; the wire core (11) is a conductor bundle formed by twisting a plurality of oxygen-free copper wires, and the surfaces of the oxygen-free copper wires are coated with semiconductor resistor water gel; The longitudinal water-blocking filling layer (12) is a mixture of semiconductive water-blocking yarns and water-swelling water-blocking powder, and is filled in the conductor bundle twisting gaps; The fire-resistant layer (13) is formed by overlapping and wrapping a synthetic mica tape on the outer side of the longitudinal water-blocking filling layer (12); the radial moisture-proof layer (14) is an aluminum-plastic composite belt longitudinally wrapped on the outer side of the refractory layer (13), and the longitudinally wrapped lap joint is sealed by epoxy glue; The insulating layer (15) is a cross-linked low-smoke halogen-free flame-retardant polyolefin insulating material; the outer sheath layer (16) is a low-smoke halogen-free flame-retardant polyolefin sheath material added with a nanoscale moisture-proof agent.
  2. 2. The moisture-proof type house ornamentation fire-resistant wire with the longitudinal water-blocking function according to claim 1, wherein the water-swelling type water-blocking powder is polyacrylate water-blocking powder, the semiconductor resistor water gel is made of butyl rubber and carbon black, and the coating thickness is 0.01-0.02 mm.
  3. 3. The moisture-proof type house ornamentation fire-resistant wire with the longitudinal water blocking function according to claim 1, wherein the lapping overlapping rate of the synthetic mica tape is not lower than 50%, the thickness is 0.08-0.15 mm, the aluminum layer of the aluminum-plastic composite tape faces the fire-resistant layer (13), the plastic layer faces the outer side, and the lapping width is 4-6 mm; the outer sheath layer (16) is extruded by low smoke zero halogen flame retardant polyolefin sheath material of nano silicon dioxide moisture-proof agent.
  4. 4. The moisture-proof household electrical wire with the longitudinal water blocking function according to claim 1, wherein a plurality of fixing rings (2) are fixedly arranged on the electrical wire main body (1), a plurality of supporting blocks (21) are circumferentially arranged on the fixing rings (2), a rotating ring (3) is rotatably arranged on the fixing rings (2), a lug (22) is fixedly arranged on the supporting blocks (21), a chute (31) is arranged on the rotating ring (3), and the lug (22) is slidably arranged in the chute (31); The electric wire main body (1) is arranged through the pipe, and then the supporting block (21) slides to be abutted with the inner wall of the sleeve.
  5. 5. The moisture-proof type house ornamented fire-resistant wire with the longitudinal water-blocking function according to claim 4, wherein an end cover (6) is fixedly arranged on the wire main body (1) and seals one end of the sleeve; The tensioning piece comprises a pull rope (61) fixedly arranged on the end cover (6), a winding hole (32) is formed in the rotating ring (3), two sides of the fixed ring (2) are provided with through holes (23), the pull rope (61) penetrates through the fixed ring (2) through the two through holes (23), a section of the pull rope (61) located between the two through holes (23) penetrates through the winding hole (32), and the two through holes (23) are aligned; A torsion spring is arranged between the rotating ring (3) and the fixed ring (2).
  6. 6. The moisture-proof type house ornamented fire-resistant wire with the longitudinal water blocking function according to claim 5, wherein a fixed cylinder (4) is fixedly arranged on the wire main body (1), a sliding block (41) is arranged on the fixed cylinder (4) in a sliding manner, a winding column (42) is rotatably arranged on the sliding block (41), and the pull rope (61) is fixedly and windingly arranged on the winding column (42); A spiral spring is arranged between the sliding block (41) and the rolling column (42).
  7. 7. The moisture-proof household electrical wire with the longitudinal water blocking function according to claim 6, wherein a sliding cover (5) is arranged on the fixed cylinder (4) in a sliding manner, an abutting groove (51) is formed in the sliding cover (5), a shaft of the winding column (42) is arranged in the abutting groove (51), a friction plate (43) is fixedly arranged on the shaft of the winding column (42), and the friction plate (43) is in abutting fit with the abutting groove (51); The novel plugging device is characterized by further comprising a screwing cover (7), wherein the screwing cover (7) is in threaded connection with the sliding cover (5), and the screwing cover (7) plugs one end of the sleeve.
  8. 8. A method for producing a moisture-proof type house-hold fire-resistant wire having a longitudinal water blocking function, which is used for producing the moisture-proof type house-hold fire-resistant wire having a longitudinal water blocking function as claimed in claims 1 to 7, characterized by comprising the steps of: s1, preparing a wire core (11), selecting oxygen-free copper wires, spraying a semiconductor resistor water gel on the surface of each oxygen-free copper wire, controlling the spraying thickness to be 0.01-0.02 mm, and then stranding the coated oxygen-free copper wires to form a conductor bundle; S2, longitudinal water-blocking filling, namely uniformly mixing semiconductive water-blocking yarns with water-swelling water-blocking powder, and densely filling the mixture into the conductor bundle twisting gaps prepared in the step S1 by filling equipment to ensure no gaps; S3, wrapping the fire-resistant layer (13), overlapping and wrapping the synthetic mica tape on the outer side of the longitudinal water-blocking filling layer (12) by wrapping equipment, and controlling the wrapping overlapping rate to be not lower than 50% and the wrapping tension to be 4-6N to form a complete fire-resistant layer (13); S4, longitudinally wrapping a radial moisture-proof layer (14), longitudinally wrapping an aluminum-plastic composite belt on the outer side of the refractory layer (13) in a mode that the aluminum layer faces the refractory layer (13), controlling the lap joint width to be 4-6 mm, and sealing the lap joint by using epoxy glue to form a seamless radial moisture-proof barrier; S5, extruding the insulating layer (15), and extruding and coating the cross-linked low-smoke halogen-free flame-retardant polyolefin insulating material on the outer side of the radial moisture-proof layer (14) by adopting an extrusion die; and S6, extruding the outer sheath layer (16), and extruding and coating the low-smoke halogen-free flame-retardant polyolefin sheath material added with the nanoscale silicon dioxide moisture-proof agent outside the insulating layer (15) by adopting a tube extruding die.
  9. 9. The method for manufacturing the moisture-proof type house ornamented fire-resistant wire with the longitudinal water blocking function according to claim 8, wherein the mass ratio of the semiconductive water blocking yarn to the water-swelling type water blocking powder in the step S2 is 6-8:2-4.
  10. 10. The method for manufacturing a moisture-proof type house ornamented refractory electric wire with a longitudinal water blocking function according to claim 8, wherein in step S6, the extrusion temperature is controlled to 165-175 ℃ to ensure smooth and unbroken surface of the outer sheath layer; And in the step S5, the extrusion pressure is controlled to be 15-20 MPa, and the extrusion temperature is controlled to be 175-185 ℃, so that the insulating layer and the radial moisture-proof layer are tightly attached.

Description

Moistureproof household decoration refractory wire with longitudinal water blocking function and preparation method thereof Technical Field The invention relates to the technical field of wires, in particular to a moistureproof household decoration fire-resistant wire with a longitudinal water blocking function and a preparation method thereof. Background The home wiring is the core carrier of the home electrical system, whose performance is directly related to living safety. Along with the diversification of home decoration scenes, the wiring requirements of wet areas such as toilets, balconies and basements are increased, and the traditional home decoration electric wire has obvious technical defects that firstly, the longitudinal water resistance is weak, water is easy to diffuse along the axial direction of a conductor from the end of the electric wire and the damaged part of a sheath, and permeates between a wire core and an insulating layer, so that the insulating performance is reduced, and even short circuit and electric leakage risks are caused, and particularly, the problem is more prominent in the water accumulation or wall body moisture regaining scenes in a threading pipe. In the prior art, although a water-blocking layer or a fireproof layer is additionally arranged on part of the electric wires, if only a single water-blocking tape is adopted for wrapping, the omnibearing longitudinal water blocking cannot be realized, the fireproof layer is not tightly attached to the water-blocking layer, the fireproof layer is easy to fall off in case of fire, the fireproof protection effect is lost, the water-blocking material does not have the characteristics of a semiconductor, partial discharge is easy to generate, and the leakage risk is increased. Disclosure of Invention The invention aims to provide a moistureproof household decoration refractory wire with a longitudinal water blocking function and a preparation method thereof, so as to solve the defects in the prior art. In order to achieve the above object, the present invention provides the following technical solutions: The moistureproof type home decoration fire-resistant wire with the longitudinal water blocking function comprises a wire body, wherein the wire body sequentially comprises a wire core, a longitudinal water blocking filling layer, a fire-resistant layer, a radial moisture-proof layer, an insulating layer and an outer sheath layer from inside to outside, and all the layers are tightly attached; The wire core is a conductor bundle formed by twisting a plurality of oxygen-free copper wires, and the surfaces of the oxygen-free copper wires are coated with semiconductor resistor water gel; The longitudinal water-blocking filling layer is a mixture of semiconductive water-blocking yarns and water-swelling water-blocking powder, and is filled in the conductor bundle twisting gaps; The fire-resistant layer is formed by overlapping and wrapping a synthetic mica tape on the outer side of the longitudinal water-blocking filling layer; the radial moisture-proof layer is an aluminum-plastic composite belt longitudinally wrapped on the outer side of the refractory layer, and the longitudinally wrapped lap joint is sealed by epoxy glue; The insulating layer is a cross-linked low-smoke halogen-free flame-retardant polyolefin insulating material; The outer sheath layer is a low-smoke halogen-free flame-retardant polyolefin sheath material added with a nanoscale moisture-proof agent. Preferably, the water-swellable water-blocking powder is polyacrylate water-blocking powder, the semiconductor resistor water gel is made of butyl rubber and carbon black, and the coating thickness is 0.01-0.02 mm. Preferably, the lapping overlapping rate of the synthetic mica tape is not lower than 50%, the thickness is 0.08-0.15 mm, the aluminum layer of the aluminum-plastic composite tape faces the refractory layer, the plastic layer faces the outer side, and the lapping width is 4-6 mm; the outer sheath layer is extruded by low smoke zero halogen flame retardant polyolefin sheath material of nano silicon dioxide moisture-proof agent. Preferably, the wire main body is fixedly provided with a plurality of fixing rings, the fixing rings are circumferentially provided with a plurality of supporting blocks, the fixing rings are rotatably provided with rotating rings, the supporting blocks are fixedly provided with lugs, the rotating rings are provided with inclined grooves, and the lugs are slidably arranged in the inclined grooves; the wire main body is arranged through the pipe, and then the support block slides to be abutted with the inner wall of the sleeve. Preferably, an end cover is fixedly arranged on the electric wire main body and is used for plugging one end of the sleeve; The tensioning piece comprises a pull rope fixedly arranged on the end cover, winding holes are formed in the rotating ring, perforations are formed in two sides of the fixing ring, the pu