Environmentally friendly cables and charging devices

Abstract

The present disclosure provides an environmentally friendly cable and charging device. The environmentally friendly cable includes a core wire, an insulating rubber, a cable joint and a joint rubber sleeve, the cable joint is connected to the core wire, the insulating rubber covers the core wire, the joint rubber sleeve is sleeved on the cable joint, and the raw materials for preparing one or both of the insulating rubber and the joint rubber sleeve include bio-based polymer materials. The production of environmentally friendly cables using bio-based polymer materials as raw materials can reduce the carbon emissions generated during the cable production process while maintaining the insulation and mechanical properties of the cable itself.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to an environmentally friendly cable and a charging device. Background Art

[0002] Data cables are cables used to transmit electrical signals between different devices. Electronic devices such as monitors, computers, and mobile phones have greatly enriched human production and life, and their role in human daily production and life has become increasingly important. With the large-scale popularization and application of these electronic devices, the demand for data cables is also increasing day by day.

[0003] Generally, cables, including data cables, have an insulating outer sheath and a conductive core wire for transmitting electrical signals. Considering the actual use of cables, it is necessary to take into account the insulation of the outer sheath and the mechanical properties such as the softness and stiffness of the outer sheath. Therefore, the outer sheath of the cable is usually prepared using certain polymer materials as the basic raw materials. At present, polymer materials are generally prepared using petroleum as a chemical raw material and through a series of complex separation and polymerization processes. It is estimated that for every ton of polymer material produced, two to five tons of crude oil are consumed and four to eight tons of carbon dioxide are emitted. Therefore, the large-scale use of cables is also accompanied by a large amount of crude oil consumption and carbon emissions. Summary of the invention

[0004] Based on this, in order to reduce the carbon emissions required for preparing the cable while maintaining the mechanical properties and insulation of the cable, it is necessary to provide an environmentally friendly cable.

[0005] According to some embodiments of the present invention, an environmentally friendly cable is provided, characterized in that the environmentally friendly cable comprises a core wire, an insulating rubber, a cable joint and a joint rubber sleeve, the cable joint is connected to the core wire, the insulating rubber covers the core wire, the joint rubber sleeve is sleeved on the cable joint, and the preparation raw materials of one or both of the insulating rubber and the joint rubber sleeve contain bio-based polymer materials.

[0006] In one of the embodiments, the raw materials for preparing the insulating rubber include bio-based polymer materials, and the environmentally friendly cable also includes a shielding layer and an isolation film. The shielding layer, the isolation film and the insulating rubber are sequentially stacked from the inside to the outside to cover the core wire.

[0007] In one embodiment, the isolation film includes one or more of a raw tape, a tissue paper and a Teflon film.

[0008] In one embodiment, the preparation process of the insulating rubber comprises the following steps:

[0009] Forming a shielding layer on the surface of the core wire;

[0010] Wrapping the isolation film on the shielding layer;

[0011] The prepared raw materials are melted and added into an extruder, and extruded onto the surface of the isolation film to form an insulating rubber.

[0012] In one embodiment, the shielding layer includes a metal foil and / or a graphene sheet wrapped around the cable core wire.

[0013] In one embodiment, the raw material for preparing the joint rubber sleeve includes a bio-based polymer material, and the preparation process of the joint rubber sleeve includes the following steps:

[0014] The prepared raw material is melted and injected into the mold cavity of the mold. A mold cavity modification layer or a mold cavity modification pattern is arranged on the surface of the mold cavity. The mold cavity modification layer includes a Teflon coating or a nano coating. The mold cavity modification pattern is a spark pattern.

[0015] In one embodiment, the bio-based polymer material includes one or more of bio-based polyvinyl chloride, bio-based polyolefin elastomer, bio-based polyurethane elastomer and bio-based styrene-butadiene rubber.

[0016] In one embodiment, the bio-based polymer material is selected from bio-based polyvinyl chloride, and the mass proportion of bio-based polyvinyl chloride in the preparation raw materials is more than 40%; or,

[0017] The bio-based polymer material is selected from bio-based polyolefin elastomers, and the bio-based polyolefin elastomers include bio-based polypropylene, and in the preparation raw materials, the mass proportion of bio-based polypropylene is more than 30%; or,

[0018] The bio-based polymer material is selected from bio-based polyurethane elastomer, and the raw materials for preparing the bio-based polyurethane elastomer include bio-based butanediol, and the mass proportion of bio-based butanediol in the raw materials is more than 30%; or,

[0019] The bio-based polymer material is selected from bio-based styrene-butadiene rubber, and in the preparation raw materials, the mass proportion of bio-based styrene-butadiene rubber is more than 65%.

[0020] In one embodiment, the environmentally friendly cable is a data cable.

[0021] In the environmentally friendly cable in the above embodiment, it includes a core wire, an insulating rubber, a cable joint and a joint rubber sleeve, and the raw materials for preparing one or both of the insulating rubber and the joint rubber sleeve include bio-based polymer materials. Bio-based polymer materials are formed by further processing using bio-based substances as raw materials. Bio-based polymer materials have the advantages of abundant and renewable raw material sources. It has been verified by experiments that the production of environmentally friendly cables using bio-based polymer materials as raw materials can effectively reduce the demand for petroleum-based polymer materials for cables while maintaining the insulation and mechanical properties of the cables themselves, and reduce the carbon emissions generated during the cable production process.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an environmentally friendly cable;

[0024] Figure 2 for Figure 1 A schematic cross-sectional view of the core wire and insulating rubber part of the environmentally friendly cable;

[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the shielding layer wrapped around the core wire surface in the environmentally friendly cable;

[0026] The reference numerals and their meanings are as follows:

[0027] 111, shielding layer; 112, isolation film; 113, insulating rubber; 121, first conductor; 122, first covering layer; 131, second conductor; 132, second covering layer; 141, third conductor; 142, third covering layer; 151, fourth conductor; 152, fourth covering layer; 161, power conductor; 162, power conductor covering layer; 170, first ground wire; 180, second ground wire; 190, third ground wire; 210, first joint rubber sleeve; 220, first cable joint; 310, second joint rubber sleeve; 320, second cable joint. DETAILED DESCRIPTION

[0028] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant content. The preferred embodiment of the present application is given in the text. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0031] An embodiment of the present disclosure provides an environmentally friendly cable. The environmentally friendly cable includes a core wire, an insulating rubber, a cable joint and a joint rubber sleeve, wherein the cable joint is connected to the core wire, the insulating rubber covers the core wire, the joint rubber sleeve is sleeved on the cable joint, and the raw materials for preparing one or both of the insulating rubber and the joint rubber sleeve include bio-based polymer materials.

[0032] It can be understood that bio-based polymer materials refer to materials derived from natural biomass, including materials that use biomass as raw materials and are obtained through biological manufacturing. Taking bio-based polypropylene as an example, bio-based polypropylene is made from sugars produced by starch hydrolysis, and polypropylene is mainly made by fermentation of plant sugars. Bio-based polypropylene is a bio-based polymer plastic. In some other specific examples, bio-based polymer plastics can also include bio-based polymer rubber.

[0033] Since insulating rubber is usually produced by extrusion molding on a shielding layer, when bio-based polymer materials are used in the process of preparing insulating rubber, when the amount of bio-based polymer materials is high, there will be problems such as excessive fluidity, adhesion or penetration into the shielding layer, resulting in the inability to extrude the insulating rubber.

[0034] In order to solve this problem, in some specific examples of this embodiment, the raw materials for preparing the insulating rubber include bio-based polymer materials, and the environmentally friendly cable also includes a shielding layer and an isolation film, and the shielding layer, the isolation film and the insulating rubber are sequentially stacked from the inside to the outside to cover the core wire. By arranging the isolation film on the surface of the shielding layer, in addition to preventing the raw materials for preparing the insulating rubber from extending into the shielding layer, it can also prevent the bio-based polymer materials from adhering to the shielding layer, and assist the bio-based polymer materials in quickly shaping during the extrusion process.

[0035] In some specific examples of this embodiment, the isolation film includes one or more of raw tape, tissue paper and Teflon film. Raw tape, tissue paper and Teflon film all have low surface adhesion. When used as isolation films to coat the shielding layer, they can effectively prevent the bio-based polymer material from sticking to the mold and assist the bio-based polymer material in rapid shaping during the extrusion process.

[0036] In some specific examples of this embodiment, the preparation process of the insulating rubber includes the following steps: forming a shielding layer on the surface of the core wire; wrapping an isolation film on the shielding layer; melting the prepared raw materials into an extruder, and extruding them onto the surface of the isolation film to form an insulating rubber.

[0037] In some specific examples of this embodiment, the raw materials for preparing the joint rubber sleeve include bio-based polymer materials. The joint rubber sleeve can be prepared by injection molding. When the mass proportion of the bio-based polymer materials in the preparation raw materials is relatively high, the preparation raw materials have excessive viscosity and stick to the mold during the injection molding process, which leads to cracking during injection molding.

[0038] In some specific examples of this embodiment, the preparation process of the joint rubber sleeve includes the following steps:

[0039] The prepared raw material is melted and injected into the mold cavity of the mold. A mold cavity modification layer or a mold cavity modification pattern is arranged on the surface of the mold cavity. The mold cavity modification layer includes a Teflon coating or a nano coating. The mold cavity modification pattern is a spark pattern.

[0040] In some specific examples of this embodiment, the bio-based polymer material includes one or more of bio-based polyvinyl chloride, bio-based polyolefin elastomer, bio-based polyurethane elastomer and bio-based styrene-butadiene rubber.

[0041] In some specific examples of this embodiment, the bio-based polymer material is selected from bio-based polyvinyl chloride, and in the preparation raw materials, the mass proportion of bio-based polyvinyl chloride is more than 40%. Due to the difference in the actual preparation route, there are certain differences in performance between bio-based polyvinyl chloride and petroleum-based polyvinyl chloride. After a large number of creative experiments, the inventors found that when the mass proportion of bio-based polyvinyl chloride reaches more than 40%, the molding speed of the composite material will be significantly slower and it will be easier to stick to the mold. At this time, for the insulating rubber, the problem can be improved by setting an isolation film on the shielding layer, and for the cable connector, the problem can be improved by applying a spark pattern during injection molding.

[0042] In some specific examples of this embodiment, the bio-based polymer material is selected from bio-based polyolefin elastomers, and the bio-based polyolefin elastomers include bio-based polypropylene. In the preparation of raw materials, the mass proportion of bio-based polypropylene is more than 30%. After a large number of creative experiments, the inventors found that when the mass proportion of bio-based polypropylene in the preparation of raw materials is more than 30%, the shaping speed of the composite material will be significantly slower and more prone to mold sticking. At this time, for the insulating rubber, the problem can be improved by setting an isolation film on the shielding layer, and for the cable connector, the problem can be improved by applying a spark pattern during injection molding.

[0043] In some specific examples of this embodiment, the bio-based polymer material is selected from bio-based polyurethane elastomer, and the monomer for preparing the bio-based polyurethane elastomer includes bio-based butanediol, and the mass proportion of bio-based butanediol in the preparation raw materials is more than 30%. The inventors have found through a large number of creative experiments that when the mass proportion of bio-based butanediol in the preparation raw materials is more than 30%, the shaping speed of the composite material will be significantly slower and it will be easier to stick to the mold. At this time, for the insulating rubber, the problem can be improved by setting an isolation film on the shielding layer, and for the cable joint, the problem can be improved by applying a spark pattern during injection molding.

[0044] In some specific examples of this embodiment, the bio-based polymer material is selected from bio-based styrene butadiene rubber, and the mass proportion of bio-based styrene butadiene rubber in the preparation raw materials is more than 65%. The inventors have found through a large number of creative experiments that when the mass proportion of bio-based styrene butadiene rubber in the preparation raw materials is more than 65%, the shaping speed of the composite material will be significantly slower and it is easier to stick to the mold. At this time, for the insulating rubber, the problem can be improved by setting an isolation film on the shielding layer, and for the cable connector, the problem can be improved by applying a spark pattern during injection molding.

[0045] In some specific examples of this embodiment, the environmentally friendly cable is a data cable. The cable connector of the data cable can be a commonly used connector, such as one or more of a lightning connector, a type-C connector, and a USB connector.

[0046] It can be understood that the raw materials containing bio-based polymer materials use the bio-based polymer materials as the base material, and in addition to the bio-based polymer materials, other auxiliary materials may also be included.

[0047] In some specific examples of this embodiment, the preparation raw materials may further include one or more of flame retardants and auxiliary agents.

[0048] In some specific examples of this embodiment, the auxiliary agent can improve the color and anti-oxidation performance of the insulating rubber. Correspondingly, the auxiliary agent can include one or more of an antioxidant and a toner.

[0049] In some specific examples of this embodiment, the flame retardant may include a phosphorus-based flame retardant.

[0050] In order to facilitate understanding of the environmentally friendly cable, the present disclosure also provides a schematic diagram of an implementation of the environmentally friendly cable. Figure 1 shows a schematic diagram of the structure of an environmentally friendly cable, Figure 2 Shows Figure 1 A schematic diagram of the cross-sectional structure of the core wire and insulating rubber 113 of the environmentally friendly cable.

[0051] Reference Figure 1 As shown, an environmentally friendly cable includes a connecting wire and a Figure 2 As shown, the connecting wire includes an insulating rubber 113, an isolating film 112 and a shielding layer 111. The isolating film 112 is disposed between the insulating rubber 113 and the shielding layer 111, and the isolating film 112 is used to separate the insulating rubber 113 and the shielding layer 111 to prevent the insulating rubber 113 from directly contacting the shielding layer 111. The raw materials for preparing the insulating rubber 113 include bio-based polymer materials.

[0052] In some specific examples of this embodiment, Figure 1 The environmentally friendly cable shown in is a data cable.

[0053] The cable core wire may have multiple parallel core wires. The cable core wires in the environmentally friendly cable may be used in different combinations. For example, the cable core wires include one or more of a power line, a ground line, and a signal line. In addition, the cable core wires in the environmentally friendly cable may be cable core wires with an insulating coating layer or may be bare wires. It is understood that in order to prevent signal crosstalk, the cable core wires may be separated by physical spacing.

[0054] Reference Figure 2 As shown, there are four signal lines in the data line, namely the first signal line, the second signal line, the third signal line and the fourth signal line. The first signal line includes a first wire 121 and a first coating layer 122, the second signal line includes a second wire 131 and a second coating layer 132, the third signal line includes a third wire 141 and a third coating layer 142, and the fourth signal line includes a fourth wire 151 and a fourth coating layer 152. The materials of the first coating layer 122, the second coating layer 132, the third coating layer 142 and the fourth coating layer 152 may also include the bio-based polymer materials in the above embodiments. The diameters of the first wire 121, the second wire 131, the third wire 141 and the fourth wire 151 may be between 0.05 mm and 0.5 mm.

[0055] Reference Figure 2 As shown, the cable core wire of the environmentally friendly cable also includes a power line, and the power line includes a power conductor 161 and a power line sheath 162 .

[0056] Reference Figure 2 As shown, the cable core wire of the environmentally friendly cable also includes a first ground wire 170 , a second ground wire 180 and a third ground wire 190 .

[0057] In some specific examples of this embodiment, the isolation film 112 is selected from a film layer with low adhesion properties. By selecting a film layer with low adhesion properties, the molding of the bio-based plastic film layer on the isolation film 112 can be further improved, and the molding quality of the insulating rubber can be improved.

[0058] In some specific examples of this embodiment, the insulating rubber is formed on the surface of the isolation film 112 by extrusion molding.

[0059] In some specific examples of this embodiment, the isolation film 112 includes raw tape, tissue paper or Teflon film. Raw tape, tissue paper or Teflon film are all currently available film layers with low adhesion properties. In addition, the raw tape, tissue paper or Teflon film has a relatively low thickness, and can be introduced without substantially changing the softness and other properties of the environmentally friendly cable itself.

[0060] In some specific examples of this embodiment, the thickness of the insulating rubber 113 is greater than 0.5 mm.

[0061] Reference Figure 1 As shown, in some specific examples of this embodiment, both ends of the core wire are provided with cable joints, and joint rubber sleeves are provided on the cable joints. Specifically, the environmentally friendly cable includes a first cable joint 220, a first joint rubber sleeve 210, a second cable joint 320 and a second joint rubber sleeve 310. Among them, the first joint rubber sleeve 210 wraps a part of the first cable joint 220, and the second joint rubber sleeve 310 wraps a part of the second cable joint 320.

[0062] In some specific examples of this embodiment, the raw material for preparing the first joint rubber sleeve 210 includes a bio-based polymer material, and the second joint rubber sleeve 310 also includes a bio-based polymer material.

[0063] In some specific examples of this embodiment, the first joint rubber sleeve 210 and the second joint rubber sleeve 310 can be prepared by injection molding.

[0064] In some specific examples of this embodiment, the connector types of the first cable connector 220 and the second cable connector 320 can be independently selected from one or two of a lightning connector, a type-C connector, and a USB connector.

[0065] It is understandable that the conventional shielding layer is often a braided mesh structure, specifically, for example, a braided mesh made of aluminum foil Mylar or a braided mesh made of copper foil Mylar.

[0066] Reference Figure 3As shown, it shows a schematic diagram of the structure of a shielding layer 111 wrapped around a cable core wire. Among them, the metal foil and / or graphene sheet is formed on the surface of the cable core wire by S-direction winding. Compared with the woven mesh structure, the shielding layer 111 is formed by winding and coating the metal foil and / or graphene sheet, which can effectively control the overlap rate and the softness and stiffness of the wound shielding layer 111, and also make the overall appearance of the cable more rounded. When winding, the winding method of the metal foil and / or graphene sheet can be S-direction winding or Z-direction winding.

[0067] In some specific examples of this embodiment, the thickness of the metal foil is 10 μm to 50 μm.

[0068] In some specific examples of this embodiment, the thickness of the graphene sheet is 10 μm to 50 μm.

[0069] By setting the thickness of the metal foil and / or graphene to 10 μm to 50 μm, the thickness of the formed shielding layer 111 can be made thinner, and at the same time, the shielding layer 111 can have a better effect of shielding interference.

[0070] Furthermore, the present application also provides the following embodiments and comparative examples to elaborate on the specific implementation of the environmentally friendly cable. Through the description of the embodiments and comparative examples, the implementation of the thermoplastic elastomer cable and its advantages will be more obvious. Unless otherwise specified, the materials used can be purchased from the general market.

[0071] In each embodiment and comparative example, the auxiliary agents used are antioxidants and colorants, the antioxidant is an aromatic amine antioxidant, the auxiliary agent is a colorant, and the flame retardant is a high molecular weight polyphosphate compound.

[0072] Example 1

[0073] 50 parts by mass of bio-based polyvinyl chloride, 5 parts by mass of flame retardant, 30 parts by mass of white oil and 15 parts by mass of additives were stirred and mixed uniformly, and then melted at a temperature of 150° C. for 15 minutes to prepare a bio-based polyvinyl chloride composite material;

[0074] Copper foil Mylar is wound on the core wire in S direction as a shielding layer, a raw tape is covered on the shielding layer as an isolation film, and the bio-based polyvinyl chloride composite material is extruded and coated with the isolation film through an extruder to prepare an insulating sheath.

[0075] Example 2

[0076] A bio-based polyolefin elastomer composite material is provided: 35 parts by mass of bio-based polypropylene, 30 parts by mass of hydrogenated styrene-butadiene-styrene block copolymer, 10 parts by mass of paraffin oil, 15 parts by mass of flame retardant and 10 parts by mass of auxiliary agent are blended and modified to prepare a bio-based polyolefin elastomer composite material.

[0077] Preparation of cable rubber: Copper foil Mylar is wound on the core wire in S direction as a shielding layer, a layer of raw tape is covered on the shielding layer as an isolation film, and the prepared bio-based polyolefin elastomer composite material is placed in a twin-screw extruder for melt extrude to form a cable rubber coated with the isolation film.

[0078] Example 3

[0079] A bio-based polyurethane elastomer composite material is provided: 60 parts by mass of a bio-based polyurethane elastomer, 1 part by mass of an antioxidant, 20 parts by mass of a flame retardant and 19 parts by mass of an additive are mixed, placed in a stirring barrel and stirred evenly to obtain a bio-based polyurethane elastomer composite material, wherein the raw materials for preparing the bio-based polyurethane elastomer include 80% by mass of bio-based 1,4-butanediol.

[0080] Preparation of insulating rubber: Wrap aluminum foil Mylar in S direction on the core wire as a signal shielding layer, cover the shielding layer with a layer of Teflon film as an isolation membrane, melt the prepared bio-based polyurethane elastomer composite material and add it to an extruder, extrude it along the surface of the isolation membrane to form an insulating rubber covering the isolation membrane.

[0081] Example 4

[0082] Providing a bio-based styrene butadiene rubber composite material: 70 parts by mass of bio-based styrene butadiene rubber, 1 part by mass of an antioxidant, 20 parts by mass of a flame retardant and 9 parts by mass of an additive are mixed and placed in a stirring barrel and stirred evenly. After stirring evenly, the mixture is melted at a temperature of 180° C. to prepare a molten bio-based styrene butadiene rubber composite material.

[0083] Preparation of insulating rubber: Wrap aluminum foil Mylar in S direction on the core wire as a signal shielding layer, cover the shielding layer with a layer of Teflon film as an isolation film, melt the prepared bio-based styrene-butadiene rubber composite material and add it to an extruder, extrude it along the surface of the isolation film to form an insulating rubber covering the isolation film.

[0084] Example 5

[0085] 50 parts by mass of bio-based polyvinyl chloride, 5 parts by mass of flame retardant, 30 parts by mass of white oil and 15 parts by mass of additives were stirred and mixed uniformly, and then melted at a temperature of 150° C. for 15 minutes to prepare a bio-based polyvinyl chloride composite material;

[0086] The bio-based polyvinyl chloride composite material is injected into a mold for preparing a joint rubber sleeve, and the inner surface of the mold cavity of the mold is coated with a Teflon coating, so that the bio-based polyvinyl chloride composite material is solidified to form a joint rubber sleeve.

[0087] Comparative Example 1

[0088] 50 parts by mass of bio-based polyvinyl chloride, 5 parts by mass of flame retardant, 30 parts by mass of white oil and 15 parts by mass of additives were stirred and mixed uniformly, and then melted at a temperature of 150° C. for 15 minutes to prepare a bio-based polyvinyl chloride composite material;

[0089] The core wire is wrapped with copper foil Mylar as a shielding layer, and the bio-based polyvinyl chloride composite material is extruded and molded by an extruder to coat the shielding layer to prepare an insulating rubber.

[0090] Comparative Example 2

[0091] A bio-based polyolefin elastomer composite material is provided: 35 parts by mass of bio-based polypropylene, 30 parts by mass of hydrogenated styrene-butadiene-styrene block copolymer, 10 parts by mass of paraffin oil, 15 parts by mass of flame retardant and 10 parts by mass of auxiliary agent are blended and modified to prepare a bio-based polyolefin elastomer composite material.

[0092] Preparation of cable rubber: Copper foil Mylar is wound on the core wire in S direction as a shielding layer, a layer of raw tape is covered on the shielding layer as an isolation film, and the prepared bio-based polyolefin elastomer composite material is placed in a twin-screw extruder for melt extrude to form a cable rubber coated with the isolation film.

[0093] Comparative Example 3

[0094] A bio-based polyurethane elastomer composite material is provided: 60 parts by mass of a bio-based polyurethane elastomer, 1 part by mass of an antioxidant, 20 parts by mass of a flame retardant and 19 parts by mass of an additive are mixed, placed in a stirring barrel and stirred evenly to obtain a bio-based polyurethane elastomer composite material, wherein the raw materials for preparing the bio-based polyurethane elastomer include 80% by mass of bio-based 1,4-butanediol.

[0095] Preparation of insulating rubber: Aluminum foil Mylar is wound in S direction on the core wire as a shielding layer, the prepared bio-based polyurethane elastomer composite material is melted and added into an extruder, and extruded along the surface of the shielding layer to form an insulating rubber covering the shielding layer.

[0096] Comparative Example 4

[0097] Providing a bio-based styrene butadiene rubber composite material: 70 parts by mass of bio-based styrene butadiene rubber, 1 part by mass of an antioxidant, 20 parts by mass of a flame retardant and 9 parts by mass of an additive are mixed and placed in a stirring barrel and stirred evenly. After stirring evenly, the mixture is melted at a temperature of 180° C. to prepare a molten bio-based styrene butadiene rubber composite material.

[0098] Preparation of insulating rubber: Wrap aluminum foil Mylar in S direction on the core wire as a signal shielding layer, cover the shielding layer with a layer of Teflon film as an isolation film, melt the prepared bio-based styrene-butadiene rubber composite material and add it to an extruder, extrude it along the surface of the isolation film to form an insulating rubber covering the isolation film.

[0099] Comparative Example 5

[0100] 50 parts by mass of bio-based polyvinyl chloride, 5 parts by mass of flame retardant, 30 parts by mass of white oil and 15 parts by mass of additives were stirred and mixed uniformly, and then melted at a temperature of 150° C. for 15 minutes to prepare a bio-based polyvinyl chloride composite material;

[0101] The bio-based polyvinyl chloride composite material is injected into a mold for preparing a joint rubber sleeve, wherein the inner surface of the mold cavity is not treated with Teflon coating, so that the bio-based polyvinyl chloride composite material is solidified to form a joint rubber sleeve.

[0102] Test 1: The insulating rubbers of Examples 1 to 4 were tested for aging elongation, tensile strength, flame retardancy, boiling water resistance and UV resistance under Shore 60P conditions. The results are shown in Table 1.

[0103] Table 1

[0104]

[0105]

[0106] Test 2: The molding conditions of the cable rubber and the connector rubber sleeve of Examples 1 to 5 and Comparative Examples 1 to 5 were observed. The results can be seen in Table 2.

[0107] Table 2

[0108] Molding Example 1 The peeling process is smooth and there is no sticking to the mold during extrusion molding Example 2 The peeling process is smooth and there is no sticking to the mold during extrusion molding Example 3 The peeling process is smooth and there is no sticking to the mold during extrusion molding Example 4 The peeling process is smooth and there is no sticking to the mold during extrusion molding Example 5 After injection molding, the demoulding process is smooth without sticking, and the joint rubber sleeve has no cracking Comparative Example 1 Part of the insulating rubber cracked during extrusion and could not be peeled off Comparative Example 2 Part of the insulating rubber cracked during extrusion and could not be peeled off Comparative Example 3 Part of the insulating rubber cracked during extrusion and could not be peeled off Comparative Example 4 Part of the insulating rubber cracked during extrusion and could not be peeled off Comparative Example 5 There is mold sticking during injection molding, and the joint rubber sleeve is partially cracked

[0109] The insulating rubber or the joint rubber sleeve in each of the above embodiments uses bio-based polymer materials as the base material. It can be seen from Table 1 that the use of bio-based polymer materials as the raw materials for preparing environmentally friendly cables can maintain the mechanical strength of the insulating rubber, so that it meets the requirements of the insulating rubber. In addition, the insulating rubber realizes the application of bio-based polymer materials in the preparation of cables, thereby saving carbon emissions generated by the preparation of cables, which meets the requirements of reducing carbon emissions in the current development process.

[0110] It can be seen from Table 2 that when preparing the insulating rubber by extrusion molding in Comparative Examples 1 to 4, no isolation film was further arranged on the shielding layer, so the molding of the insulating rubber was poor, and there was a case of cracking of the rubber, which affected the yield. In Comparative Example 5, no Teflon coating was arranged on the surface of the mold cavity during injection molding, so the joint rubber sleeve was sticky and cracked. Therefore, the isolation film is arranged in the insulating rubber, which can effectively improve the preparation yield of the insulating rubber in the environmentally friendly cable, and the Teflon coating is arranged when preparing the joint rubber sleeve by injection molding, which can also effectively improve the preparation yield of the joint rubber sleeve.

[0111] The above embodiments provide several formulations, but it is understandable that the environmentally friendly cable can also use other bio-based polymer materials and appropriately adjust their content to prepare environmentally friendly cables that meet actual needs.

[0112] Please note that the above embodiments are for illustrative purposes only and are not intended to limit the present application.

[0113] It should be understood that, unless otherwise clearly stated herein, the execution of the steps of is not strictly limited in order, and these steps may be executed in other orders. Moreover, at least a portion of the steps of may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but may be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0114] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0115] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An environmentally friendly cable, characterized in that: The environmentally friendly cable comprises a core wire, an insulating rubber, a cable joint and a joint rubber sleeve, wherein the cable joint is connected to the core wire, the insulating rubber covers the core wire, the joint rubber sleeve is sleeved on the cable joint, and the raw materials for preparing one or both of the insulating rubber and the joint rubber sleeve include bio-based polymer materials; The environmentally friendly cable is a data cable, and the cable connector of the environmentally friendly cable is selected from one or more of a lightning connector, a type-C connector, and a USB connector; Wherein, the bio-based polymer material is selected from bio-based polyvinyl chloride, and in the preparation raw materials, the mass proportion of the bio-based polyvinyl chloride is more than 40%; or, The bio-based polymer material is selected from bio-based polyolefin elastomers, and the bio-based polyolefin elastomers include bio-based polypropylene, and in the preparation raw materials, the mass proportion of the bio-based polypropylene is more than 30%; or, The bio-based polymer material is selected from bio-based polyurethane elastomer, the preparation monomer of the bio-based polyurethane elastomer includes bio-based butanediol, and the mass proportion of the bio-based butanediol in the preparation raw materials is more than 30%; or, The bio-based polymer material is selected from bio-based styrene-butadiene rubber, and in the preparation raw materials, the mass proportion of the bio-based styrene-butadiene rubber is more than 65%.

2. The environmentally friendly cable according to claim 1, characterized in that: The raw materials for preparing the insulating rubber include bio-based polymer materials. The environmentally friendly cable also includes a shielding layer and an isolation film. The shielding layer, the isolation film and the insulating rubber are sequentially stacked from the inside to the outside to cover the core wire.

3. The environmentally friendly cable according to claim 2, characterized in that: The isolation film includes one or more of raw tape, tissue paper and Teflon film.

4. The environmentally friendly cable according to claim 2, characterized in that: The preparation process of the insulating rubber comprises the following steps: forming the shielding layer on the surface of the core wire; Covering the isolation film on the shielding layer; The prepared raw materials are melted and added into an extruder, and extruded onto the surface of the isolation film to form the insulating rubber.

5. The environmentally friendly cable according to claim 2, characterized in that: The shielding layer includes a metal foil material and / or a graphene sheet material wrapped around the cable core wire.

6. The environmentally friendly cable according to claim 1, characterized in that: The raw materials for preparing the joint rubber sleeve include bio-based polymer materials, and the preparation process of the joint rubber sleeve includes the following steps: The prepared raw material is melted and injected into a mold cavity of a mold. A mold cavity modification layer or a mold cavity modification pattern is arranged on the surface of the mold cavity. The mold cavity modification layer includes a Teflon coating or a nano coating. The mold cavity modification pattern is a spark pattern.

7. The environmentally friendly cable according to any one of claims 1 to 6, characterized in that: The cable core wires include a power line, a ground line and a signal line.

8. The environmentally friendly cable according to any one of claims 1 to 6, characterized in that: The thickness of the insulating rubber is above 0.5 mm.

9. The environmentally friendly cable according to any one of claims 1 to 6, characterized in that: The cable connectors are arranged at both ends of the core wire, and the connector rubber sleeves are sleeved on the two cable connectors.

10. A charging device, characterized in that: The invention comprises a power adapter and the environmentally friendly cable according to any one of claims 1 to 9.

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