Universal cable convenient for internal threading

Abstract

The invention relates to the technical field of cables and wires, and discloses a universal cable convenient for internal threading. Comprising a copper core conductor, an insulating layer wrapping the surface of the copper core conductor, an insulating filling layer wrapping the outer surface of the insulating layer, a steering movable layer wrapping the outer surface of the insulating filling layer, a tensile layer wrapping the outer surface of the steering movable layer and a reinforcing material layer wrapping the outer surface of the tensile layer, the reinforcing material layer is made of modified polyethylene. A steering movable layer is added, so that internal threading is more convenient and efficient; the tensile layer is used, so that the cable is more resistant to dragging during internal threading, breakage is avoided, and internal electric leakage caused by insect and mouse gnawing is also avoided; the modified polyvinyl chloride is used for preparing the insulating layer, and the modified polyethylene is used for preparing the reinforcing material layer, so that the cable not only has excellent insulativity, but also has excellent characteristics of aging resistance, friction resistance and the like, and the service life of the cable is longer.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and more particularly discloses a universal cable that is convenient for internal threading. Background Art

[0002] Cable refers to materials used for power, electrical and related transmission purposes. There is no strict boundary between "wire" and "cable". Usually, products with a small number of cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and the others are called cables. Existing cables and wires have the disadvantage of poor internal threading effect, which makes the cables and wires easily damaged during use, reducing the service life of the cables and wires. Based on this, the present invention proposes a universal cable that is easy to thread internally. Summary of the invention

[0003] The present invention mainly provides a universal cable which is convenient for internal threading, and can solve the problem of poor internal threading effect of existing cables and wires.

[0004] To solve the above technical problems, according to one aspect of the present invention, more specifically, a universal cable that is convenient for internal threading, comprising a copper core conductor, an insulating layer wrapped on the surface of the copper core conductor, an insulating filling layer wrapped on the outer surface of the insulating layer, a steering active layer wrapped on the outer surface of the insulating filling layer, a tensile layer wrapped on the outer surface of the steering active layer, and a reinforcing material layer wrapped on the outer surface of the tensile layer, wherein the insulating layer is a modified insulating layer, and the preparation method thereof is as follows: pulverizing polyvinyl chloride particles with a pulverizer, passing through a 200-mesh sieve, adding the sieved powder to a reaction bottle, then adding dioctyl phthalate to the reaction bottle, stirring and mixing for 20 minutes, adding tribasic lead sulfate, phenylenediamine, and butyl acrylate, stirring and mixing for 5 minutes, and adding the mixture to a double-roll plasticizer at 145°C±5°C for repeated plasticizing for 10 minutes; The reinforcing material layer is modified polyethylene, and its preparation method is as follows: the polyethylene particles are crushed through a 200-mesh sieve, the sieved powder is added to a reaction bottle, and then melamine, silicate fiber, pentaerythritol stearate, polyethylene grafted maleic anhydride, silane coupling agent KH-570 and nano zinc oxide are added to the reaction bottle, stirred and mixed for 5 minutes, and the mixture is added to a double-roll plasticator and repeatedly plasticized at 145°C±5°C for 10 minutes.

[0005] Furthermore, the insulating filling layer is an electrically insulating non-woven fabric, and the thickness of the insulating filling layer is 0.1-0.3 mm.

[0006] Furthermore, the steering movable layer is a universal metal hose, and the thickness of the steering movable layer is 0.1 mm.

[0007] Furthermore, the tensile layer is a stainless steel metal braided hose, and the thickness of the tensile layer is 0.1 mm.

[0008] Furthermore, during the preparation of modified polyethylene, the amounts of melamine, silicate fiber, pentaerythritol stearate, polyethylene grafted maleic anhydride, silane coupling agent KH-570 and nano zinc oxide added to the reaction bottle were 1 / 5, 1 / 10, 1 / 20, 1 / 10, 1 / 15 and 1 / 40 of the weight of the polyethylene powder, respectively.

[0009] Furthermore, during the preparation of the modified insulating layer, the amount of dioctyl phthalate added is 1 / 5 of the weight of the sieved powder.

[0010] Furthermore, the thickness of the insulating layer is 0.1-0.2 mm.

[0011] Furthermore, the thickness of the reinforcement material layer is 0.5-0.8 mm.

[0012] The beneficial effects of the universal cable for convenient internal threading of the present invention are as follows: a turning movable layer is added to make internal threading more convenient and efficient; a tensile layer is used to make the internal threading more resistant to dragging and avoid breakage, while also avoiding internal leakage caused by insects and rodents gnawing; modified polyvinyl chloride is used to prepare the insulating layer and modified polyethylene is used to prepare the reinforcing material layer, which not only has excellent insulation, but also has excellent properties such as aging resistance and friction resistance, so that the service life of the cable is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is a schematic diagram of the chemical reaction formula of polyvinyl chloride and p-phenylenediamine; Figure 2 This is a schematic diagram of the relationship between the amount of p-phenylenediamine added and the tensile strength of polyvinyl chloride; Figure 3 Schematic diagram of tensile strength and aging time of polyvinyl chloride before and after modification; Figure 4 This is the infrared spectrum of polyvinyl chloride before modification; Figure 5 This is the infrared spectrum of modified polyvinyl chloride; Figure 6 This is a schematic diagram of the graft acylation reaction of melamine and polyethylene maleic acid; Figure 7 This is the infrared spectrum of the modified polyethylene; Figure 8 This is a schematic diagram of the relationship between the dosage of nano zinc oxide and the tensile strength of polyethylene; Fig. 9 It is a schematic diagram of the cross-sectional structure of the present invention.

[0015] In the figure: 1. Copper core conductor; 2. Insulation layer; 3. Insulation filling layer; 4. Steering activity layer; 5. Tensile layer; 6. Reinforcement material layer. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0017] Preparation of modified insulating layer: The polyvinyl chloride particles were crushed by a crusher and passed through a 200-mesh sieve. The sieved powder was added to a reaction bottle. Then, 1 / 5 of the weight of the sieved powder was added to the reaction bottle with dioctyl phthalate, and the mixture was stirred for 20 minutes. Tribasic lead sulfate, phenylenediamine and butyl acrylate were added, and the mixture was stirred for 5 minutes. The mixture was added to a double-roll plasticator and repeatedly plasticized at 145°C±5°C for 10 minutes.

[0018] like Figure 3 As shown in the figure, the tensile strength of polyvinyl chloride before and after modification is better and more resistant to aging. Figure 4 , Figure 5 It can be seen from the figure that 2900cm -1 Nearby are the bands of CH2 in polyvinyl chloride, dioctyl phthalate molecule and CH on the benzene ring of dioctyl phthalate: 1730cm -1 is the absorption peak of carbonyl stretching, 1600cm -1 The peaks near 2700cm are the vibration of the benzene ring skeleton, and 695cm is the C-Cl stretching vibration absorption peak. -1 According to the literature (Zou Jianping, Wang Lu, Zeng Runsheng, Structure and Analysis of Organic Compounds [M]. Beijing, Science Press, 2005: 82~83.), at 2700cm -1 The central bandwidth is N + The H2Cl stretching vibration absorption peak is a newly generated group, proving that a reaction has occurred.

[0019] Preparation of modified polyethylene: The polyethylene particles were crushed and passed through a 200-mesh sieve, and the sieved powder was added to a reaction bottle. Then, 1 / 5 of the weight of the sieved powder was added with melamine, 1 / 10 of the weight of silicate fiber, 1 / 20 of the weight of pentaerythritol stearate, 1 / 10 of the weight of polyethylene grafted maleic anhydride, 1 / 15 of the weight of silane coupling agent KH-570 and 1 / 40 of the weight of nano zinc oxide were added to the reaction bottle, and the mixture was stirred for 5 minutes. The mixture was added to a double-roll mill and repeatedly milled at 145°C±5°C for 10 minutes.

[0020] like Figure 7As shown in the figure, according to the literature (Zhang Hua et al. Modern Organic Spectral Analysis [M]. Beijing: Chemical Industry Press, 2005: 250-327.), 3470cm -1 and 3418cm -1 The two absorption peaks are the asymmetric stretching vibration and symmetric stretching vibration of N-H respectively; the stretching vibration absorption of C = N in the tricyclic ring is 1563cm -1 , the deformation vibration absorption of C-N is 1538 cm -1 ,1551cm in the figure -1 It is the strong absorption peak after the overlap of these two peaks; 814 cm -1 The asymmetric stretching vibration and symmetric stretching vibration of the methylene group correspond to 2920cm in the figure. -1 and 2851cm -1 Two absorption peaks; 1468 cm -1 It is the deformation vibration absorption of methylene; -(CH2) n -The horizontal vibration absorption peak is 719cm in the figure -1 The absorption peaks analyzed above can all be obtained from the groups in melamine, polyethylene and polyethylene grafted maleic anhydride. Through analysis, the 1653 cm -1 It is the stretching vibration absorption of C=O in tertiary amide. Tertiary amide is the newly generated group. It can be inferred that a reaction has occurred, and it is the reaction between melamine and polyethylene grafted maleic anhydride.

[0021] The copper core conductor 1, insulation layer 2, insulation filling layer 3, steering active layer 4, tensile layer 5 and reinforcement material layer 6 components in the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods.

[0022] See also Fig. 9A universal cable that is convenient for internal threading, comprising a copper core conductor 1, the outer surface of the copper core conductor 1 is coated with an insulating layer 2, the thickness of the insulating layer 2 is 0.1-0.2mm, the insulating layer 2 is a modified polyvinyl chloride layer, and the modification method is given in the present invention. By modifying the insulating layer 2, the three copper core conductors 1 are insulated from each other, avoiding the contact of the three copper core conductors 1 to cause a short circuit, and also enhancing the tensile strength and insulation. The outer surface of the inner insulating layer 2 is wrapped with an insulating filling layer 3, the insulating filling layer 3 is an electrically insulating non-woven fabric, and the thickness of the insulating filling layer is 0.1-0.3mm. By setting the insulating filling layer 3, it has good elasticity, toughness, insulation and other characteristics. The steering active layer 4 is composed of a universal metal hose, and the steering The thickness of the active layer is 0.1mm, which enhances the turning and bending performance of the cable and wire, avoiding the phenomenon that the cable and wire are not easy to thread internally. By setting the tensile layer 5, the thickness of the tensile layer is 0.1mm. When the cable and wire are subjected to pulling force, it has a buffering effect, further improving the strength of the cable and wire, preventing internal fracture, and effectively avoiding leakage caused by insects and rodents. The outer surface of the tensile layer 5 is covered with a reinforcing material layer 6, and the reinforcing material layer 6 is a modified polyethylene layer. By setting the reinforcing material layer 6, the insulation effect of the cable and wire is further enhanced. At the same time, it also has a certain friction resistance, which enhances the service life of the cable and wire. The thickness of the reinforcing material layer 6 is 0.5-0.8mm.

[0023] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A universal cable for internal threading, comprising a copper core conductor 1, an insulating layer 2 wrapped on the surface of the copper core conductor 1, an insulating filling layer 3 wrapped on the outer surface of the insulating layer 2, a steering layer 4 wrapped on the outer surface of the insulating filling layer 3, a tensile layer 5 wrapped on the outer surface of the steering layer 4, and a reinforcing material layer 6 wrapped on the outer surface of the tensile layer 5, characterized in that: The insulating layer 2 is a modified insulating layer, and its preparation method is as follows: crush the polyvinyl chloride particles with a crusher, pass through a 200-mesh sieve, add the sieved powder into a reaction bottle, then add dioctyl phthalate into the reaction bottle, stir and mix for 20 minutes, add tribasic lead sulfate, phenylenediamine, and butyl acrylate, stir and mix for 5 minutes, add the mixture into a double-roll plasticizer at 145°C±5°C and repeatedly plasticize for 10 minutes to obtain the obtained layer; The reinforcing material layer 6 is modified polyethylene, and its preparation method is as follows: the polyethylene particles are crushed through a 200-mesh sieve, the sieved powder is added to a reaction bottle, and then melamine, silicate fiber, pentaerythritol stearate, polyethylene grafted maleic anhydride, silane coupling agent KH-570 and nano zinc oxide are added to the reaction bottle, stirred and mixed for 5 minutes, and the mixture is added to a double-roll plasticator and repeatedly plasticized at 145°C±5°C for 10 minutes.

2. The universal cable for facilitating internal threading according to claim 1, characterized in that: The insulating filling layer 3 is an electrically insulating non-woven fabric, and the thickness of the insulating filling layer is 0.1-0.3 mm.

3. The universal cable for facilitating internal threading according to claim 1, characterized in that: The steering movable layer 4 is a universal metal hose.

4. The universal cable for facilitating internal threading according to claim 1, characterized in that: The tensile layer 5 is a stainless steel braided hose.

5. The universal cable for facilitating internal threading according to claim 1, characterized in that: During the preparation of modified polyethylene, the amounts of melamine, silicate fiber, pentaerythritol stearate, polyethylene grafted maleic anhydride, silane coupling agent KH-570 and nano zinc oxide added to the reaction bottle were 1 / 5, 1 / 10, 1 / 20, 1 / 10, 1 / 15 and 1 / 40 of the weight of polyethylene powder, respectively.

6. The universal cable for facilitating internal threading according to claim 1, characterized in that: During the preparation of the modified insulating layer, the amount of dioctyl phthalate added is 1 / 5 of the weight of the sieved powder.

7. The universal cable for facilitating internal threading according to claim 1, characterized in that: The thickness of the insulating layer (2) is 0.1-0.2 mm.

8. The universal cable for facilitating internal threading according to claim 1, characterized in that: The thickness of the reinforcing material layer (6) is 0.5-0.8 mm.

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