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A replacement-free wire for construction

A replacement-free, construction technology, used in circuits, insulated cables, electrical components, etc., can solve problems such as safety accidents and large differences in material properties, and achieve the effects of saving maintenance costs, long service life, and special service life.

Active Publication Date: 2019-01-29
西安飞机工业(集团)亨通航空电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing cross-linked polyolefin materials have different properties due to their different uses. The cross-linked polyolefin materials that have been developed on the market for construction cables have a longer service life than ordinary materials, but they have not yet been developed. It can achieve the same lifespan as the building. During the entire life of the building, the cables still need to be replaced, and safety accidents will still occur if the replacement is not timely.

Method used

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  • A replacement-free wire for construction
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  • A replacement-free wire for construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A non-replacement electric wire for construction, a conductive wire core 2 formed by twisting a plurality of copper wires 1 and an insulating layer 3 covered therewith, the conductive wire core 2 is formed by twisting 7 to 61 copper wires 1 The material of the insulating layer 3 is radiation cross-linked polyolefin; the radiation cross-linked polyolefin includes the following components in parts by weight:

[0030]

[0031] In this embodiment, the conductive wire core 2 is formed by twisting 7 copper wires 1, and the arrangement of the 7 copper wires 1 is as follows: a copper wire in the center is used as the first layer, and 6 copper wires in the second layer are uniformly arranged. placed on the outer surface of the first floor.

[0032] It should be noted that this embodiment only takes the twisting of 7 copper wires as an example for illustration. When the number of copper wires is greater than 7 and less than 61, the arrangement of the first layer and the second...

Embodiment 2

[0034] The manufacturing method of the insulating layer radiation crosslinked polyolefin of the exempting electric wire for construction of the present invention comprises the following steps:

[0035] Step 1: Use a screening machine to filter red phosphorus and nano-level montmorillonite to remove large particles and impurities in the powder; place magnesium hydroxide and stearic acid in a desiccator for 24 hours to remove or reduce the moisture; Add the ethylene-vinyl acetate copolymer into the dryer, and dry it at a constant temperature of 70-80°C for 4 hours.

[0036] Step 2: Put 30 to 50 parts of magnesium hydroxide and 0.15 to 2.5 parts of stearic acid dried in step 1 into a sealed container according to parts by weight. Stir in the container with a stirrer at ~1000r / min, and take it out after stirring for 50-60min.

[0037] Step 3: 55-65 parts of ethylene-vinyl acetate copolymer dried in step 1, 18-25 parts of high-density polyethylene, 12-16 parts of red phosphorus, a...

Embodiment 3

[0043] A method for manufacturing electric wires for construction without replacement, comprising the steps of:

[0044] Step 1: Place 7 to 61 copper wires in the center as the first layer, 6 wires on the second layer are evenly placed on the outer surface of the first layer, and the remaining 0 to 54 wires are compared with the previous layer according to each layer A maximum of 6 wires are placed on the outer surface of the upper layer, and are twisted into conductive wire cores with a Φ500-type wire twisting machine.

[0045] Step 2: Add the irradiated cross-linked polyolefin prepared according to the method of Example 2 into the Φ65 single-screw extruder. The temperature settings of the 7 temperature zones of the extruder from the feed port to the mold are as follows: 125°C, 135°C ℃, 140℃, 150℃, 145℃, 140℃, 140℃.

[0046]Step 3: Refer to the process requirements, adjust the screw speed and traction speed of the extruder, so that the extruded irradiated cross-linked polyol...

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Abstract

The invention relates to a replacement-free wire for a building. The replacement-free wire for the building comprises an electricity conducting wire core which is formed by stranding a plurality of copper wires, and an insulating layer which coats the electricity conducting wire core; the electricity conducting wire core is formed by stranding 7 to 61 copper wires; the material, namely, irradiated cross-linked polyolefin, of the insulating layer is prepared from the following components in parts by weight: 55 to 65 parts of ethylene-vinyl acetate copolymer, 18 to 25 parts of high density polyethylene, 30 to 50 parts of magnesium hydroxide, 12 to 16 parts of red phosphorus, 12 to 18 parts of nano-montmorillonite, 0.15 to 2.5 parts of stearic acid, 1.5 to 4.5 parts of silicone, 0.4 to 6 parts of an antioxidant 1010, 0.5 to 6 parts of an antioxidant DLTP, 1 to 10 parts of triallyl isocyanurate and 0.1 to 1 part of di-tert-butyl peroxide; the wire provided by the invention is smaller in bending radius and is softer; when the wire is paved in the building, the wire can be bent randomly; the wire provided by the invention has the characteristics of extremely high anti-aging performance, long service life, high mechanical and physical performances, high safety coefficient and the like.

Description

technical field [0001] The invention relates to the field of wire and cable manufacturing, in particular to a replacement-free wire for construction. Background technique [0002] As a building product, housing has a problem of service life and lifespan. According to the "General Rules for Civil Building Design" issued by the Ministry of Construction, the design service life of ordinary buildings and structures is generally 50 years. Calculated from the date of completion and acceptance, 50 years is generally the life span of ordinary houses. The wires and cables used in buildings have a service life of 25 to 30 years, which is only about half of the service life of the house. In China, accidents caused by cables that have not been replaced for a long time or not replaced in time are not uncommon. The main cause of the accidents is the short circuit caused by the aging of the cables. Among the effective measures to avoid or reduce such accidents, the research and developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L83/04C08K13/06C08K13/02C08K9/04C08K3/22C08K5/09C08K3/02C08K3/34C08K5/134C08J3/24C08J3/28H01B3/44H01B7/06H01B7/28B29C48/92
CPCB29C48/92B29C2948/92704C08J3/246C08J3/28C08J2323/08C08J2423/06C08K2201/011C08L23/0853C08L2201/08C08L2203/202C08L2205/02C08L2205/03C08L2207/062C08L2312/06H01B3/441H01B7/06H01B7/28C08L23/06C08L83/04C08K13/06C08K9/04C08K2003/2224C08K5/09C08K2003/026C08K3/346C08K5/1345
Inventor 赵凯斌罗长春王允东任金玲王盼盼李学虎
Owner 西安飞机工业(集团)亨通航空电子有限公司