Preparation method for silicone rubber wire for home decoration

Abstract

Disclosed in the present invention is a preparation method for a silicone rubber wire for home decoration. The preparation method comprises the following steps: S1, stretching wire cores, which involves: passing a single-stranded wire core raw material through die holes of a drawing die, wherein single-stranded wires undergo deformation under the action of a drawing force, causing the sections thereof to decrease and the lengths thereof to increase; and after stretching is completed, measuring the dimensions of wire cores by using a measurement tool, and retaining wire cores that meet standard dimensions; S2, performing insulation extruding, which involves: extruding insulating strip materials and the wire cores in step S1 by using a cable coating machine, such that the insulating strip materials wrap around the wire cores in S1 to form insulating layers, so as to obtain single-stranded silicone rubber wires; and S3, performing cabling. In the present invention, after the raw material that is resistant to high and low temperatures is subjected to a thermoplastic treatment and plastication, the resistance thereof to high and low temperatures can be obviously improved, such that a temperature-resistant layer of the silicone rubber wire for home decoration has a good resistance to high and low temperatures, and the temperature-resistant layer of the silicone rubber wire is not liable to plasticize or crack, and has a longer service life.

Description

A method for preparing silicone rubber wire for home decoration Technical Field

[0001] The present invention relates to the technical field of silicone rubber wires, in particular to a method for preparing silicone rubber wires for home decoration. Background Art

[0002] Silicone rubber wire is a conductive copper wire core made of copper coated with a layer of compound silicone rubber insulation. The compound silicone rubber insulation layer has the characteristics of high voltage resistance, aging resistance and oxidation resistance. The silicone rubber wire used for home decoration is generally a single-strand silicone rubber wire or several single-strand silicone rubber wires bonded together, and then uniformly coated with a layer of compound silicone rubber of a certain thickness. Some will also add a braided layer to the outermost compound silicone rubber layer to increase the toughness of the overall silicone rubber cable used for home decoration.

[0003] However, the heat and cold resistance of the above-mentioned single-core or multi-core silicone rubber cables are relatively general. After a long period of use, the silicone rubber insulation layer is prone to aging and cracking, especially in the northern region. The outdoor temperature in winter can drop to minus 20-30 degrees Celsius, and the indoor temperature can be 20-30 degrees Celsius above zero. Due to the routing of household wires, one part is located outdoors and the other part is located indoors, and the ambient temperature changes greatly. The silicone rubber insulation layer on the surface of the existing silicone rubber wires for household decoration is more prone to plasticization and aging because the two parts are respectively in low and high temperature environments, which undoubtedly reduces the service life of the silicone rubber wires.

[0004] In view of the above problems, the present invention is proposed. The present invention can be used for both single-core silicone rubber cables and multi-core silicone rubber cables. However, most silicone wires are single-core, and the present invention mainly focuses on single-core silicone rubber wires.

[0005] Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for preparing silicone rubber wires for home decoration, which is used to solve the problems mentioned in the background technology.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions.

[0008] The present invention provides a method for preparing a silicone rubber wire for home decoration, comprising the following steps:

[0009] S1. Wire core stretching: The single-strand wire core material is passed through the die hole of the stretching die. Under the action of tension, the single-strand wire is deformed, its cross-section is reduced, and its length is increased. After stretching, the size of the wire core is checked with a measuring tool, and the wire core that meets the standard size is retained;

[0010] S2. Insulation extrusion: using a cable covering machine to extrude the insulation strip and the wire core in step S1, so that the insulation strip is wrapped around the wire core in step S1 to form a first insulation layer to obtain a single-strand silicone rubber wire;

[0011] S3. Cabling: twisting multiple insulated conductors together in a specific arrangement to form a cable;

[0012] S4. Extrusion of wear-resistant layer: using an extruder to extrude wear-resistant raw materials, and coating the raw materials on the heat-resistant silicone rubber multi-strand wire to obtain the wear-resistant silicone rubber multi-strand wire.

[0013] Preferably, the insulating layer in S2 is composed of the following raw materials in parts by weight: 20-30 parts of fluororubber, 15-25 parts of silicone rubber, 15-20 parts of glass fiber, 1-8 parts of ceramsite, 15-20 parts of clay, 8-12 parts of polyethylene, 15-19 parts of phenolic resin, 6-10 parts of graphene, 2-5 parts of quicklime, and 3-6 parts of mica.

[0014] Preferably, the insulating layer in S2 is composed of the following raw materials in parts by weight: 24-28 parts of fluororubber, 18-20 parts of silicone rubber, 17-19 parts of glass fiber, 3-6 parts of ceramsite, 17-19 parts of clay, 9-11 parts of polyethylene, 16-18 parts of phenolic resin, 7-9 parts of graphene, 3-4 parts of quicklime, and 4-5 parts of mica.

[0015] Preferably, it also includes extrusion of a heat-resistant layer: using a thermoplastic extruder to extrude high-temperature and low-temperature resistant raw materials, and using a cable coating machine to coat the high-temperature and low-temperature resistant strips made of the raw materials on a braided silicone rubber multi-strand wire to obtain a heat-resistant silicone rubber multi-strand; the high-temperature and low-temperature resistant raw materials are mixed raw materials, consisting of the following raw materials in parts by weight: 40-50 parts of nitrile rubber, 20-30 parts of chloroprene rubber, 10-15 parts of EPDM rubber, 20-30 parts of ethylene vinyl acetate rubber, 2-5 parts of antioxidant, 6-8 parts of vaseline, 6-8 parts of nano-boron nitride, 5-8 parts of nano-silicon nitride, 2-4 parts of TMTD, 1-3 parts of sulfur, 2-4 parts of sodium methacrylate, 3-6 parts of zinc oxide, 3-6 parts of magnesium oxide, 3-6 parts of stearic acid, 2-4 parts of carbon black, and 1-3 parts of plasticizer.

[0016] Preferably, the high-temperature and low-temperature resistant raw materials are mixed raw materials, composed of the following raw materials in parts by weight: 43-46 parts of nitrile rubber, 23-26 parts of chloroprene rubber, 12-14 parts of EPDM rubber, 23-26 parts of ethylene vinyl acetate rubber, 3-4 parts of antioxidant, 7 parts of vaseline, 7 parts of nano-boron nitride, 6 parts of nano-silicon nitride, 3 parts of TMTD, 2 parts of sulfur, 3 parts of sodium methacrylate, 5 parts of zinc oxide, 4 parts of magnesium oxide, 5 parts of stearic acid, 3 parts of carbon black, and 2 parts of plasticizer.

[0017] Preferably, the mixed raw materials are made into a plate-shaped high-temperature and low-temperature resistant masterbatch through weight proportioning, mixing and stirring, thermoplastic extrusion and plasticizing, and then the high-temperature and low-temperature resistant masterbatch is cooled and pelletized to obtain a granular high-temperature and low-temperature resistant raw material.

[0018] Preferably, the high-temperature and low-temperature resistant raw material is subjected to an injection molding process of an injection molding machine to obtain a long high-temperature and low-temperature resistant strip material.

[0019] Preferably, the wear-resistant raw materials in S4 are composed of the following raw materials in parts by weight: 15-30 parts of silicone rubber, 10-20 parts of epoxy resin, 5-8 parts of carbon fiber, 12-15 parts of glass fiber, 5-8 parts of ceramsite, 10-12 parts of chlorinated paraffin, 8-16 parts of asphalt, 4-8 parts of quartz sand, 2-4 parts of zirconium silicate, 2-4 parts of carbon black and 6-10 parts of acrylate.

[0020] Preferably, the wear-resistant raw materials in S4 are composed of the following raw materials in parts by weight: 20-25 parts of silicone rubber, 13-17 parts of epoxy resin, 6-7 parts of carbon fiber, 13-14 parts of glass fiber, 6-7 parts of ceramsite, 11 parts of chlorinated paraffin, 10-14 parts of asphalt, 5-7 parts of quartz sand, 3 parts of zirconium silicate, 3 parts of carbon black and 8 parts of acrylate.

[0021] Preferably, weaving is also included between steps S3 and S4: weaving is divided into metal wire weaving for shielding effect, and polyester wire or fiber wire weaving for increasing tensile performance. The single-strand silicone rubber wire and multiple wrapping wires in S2 are fed into a weaving machine for weaving to obtain a braided silicone rubber multi-strand wire; there are at least four wrapping wires, which are spirally wound on the silicone rubber multi-strand wire.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] After the high-temperature and low-temperature resistant raw materials are thermoplasticized and plasticized, and then go through the injection molding process again, the high-temperature and low-temperature resistant performance can be significantly improved, so that the temperature-resistant layer of the household silicone rubber wire has good high-temperature and low-temperature resistant performance. When used in areas with lower temperatures in winter, the household silicone rubber wires connecting the outdoor and indoor areas can withstand large temperature changes between the outdoor and indoor areas. The temperature-resistant layer of the silicone rubber wire is not easy to plasticize and crack, and has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG1 is a block diagram of the steps of the present invention. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] As shown in FIG1 , a method for preparing a silicone rubber wire for home decoration includes the following steps:

[0027] S1. Wire core stretching: The raw material of the single-strand wire core is passed through the die hole of the stretching die. Under the action of tension, the single-strand wire is deformed, its cross-section is reduced, and its length is increased. After stretching, the size of the wire core is checked using a measuring tool. The wire cores that meet the standard size are retained. The wire cores that do not meet the standard size can be used as raw materials for the production line core and re-enter the wire core production link;

[0028] S2. Insulation extrusion: using a cable covering machine to extrude the insulation strip and the wire core in step S1, so that the insulation strip is wrapped around the wire core in step S1 to form a first insulation layer to obtain a single-strand silicone rubber wire;

[0029] S3. Cabling: Multiple insulated conductors are twisted together in a specific arrangement. During the cabling process, a wrapping tape can be added to wrap the wire core to form a cable.

[0030] S4. Extrusion of wear-resistant layer: using an extruder to extrude wear-resistant raw materials, and coating the raw materials on the heat-resistant silicone rubber multi-strand wire to obtain the wear-resistant silicone rubber multi-strand wire.

[0031] In one embodiment, the insulating layer in S2 is composed of the following raw materials in parts by weight: 20-30 parts of fluororubber, 15-25 parts of silicone rubber, 15-20 parts of glass fiber, 1-8 parts of ceramsite, 15-20 parts of clay, 8-12 parts of polyethylene, 15-19 parts of phenolic resin, 6-10 parts of graphene, 2-5 parts of quicklime, and 3-6 parts of mica.

[0032] In another embodiment, the insulating layer in S2 is composed of the following raw materials in parts by weight: 24-28 parts of fluororubber, 18-20 parts of silicone rubber, 17-19 parts of glass fiber, 3-6 parts of ceramsite, 17-19 parts of clay, 9-11 parts of polyethylene, 16-18 parts of phenolic resin, 7-9 parts of graphene, 3-4 parts of quicklime, and 4-5 parts of mica.

[0033] It also includes heat-resistant layer extrusion: using a thermoplastic extruder to extrude high-temperature and low-temperature resistant raw materials, and using a cable coating machine to coat the high-temperature and low-temperature resistant strips made of the raw materials on the braided silicone rubber multi-strand wire to obtain the heat-resistant silicone rubber multi-strand wire.

[0034] In one embodiment, the high-temperature and low-temperature resistant raw materials are mixed raw materials, consisting of the following raw materials in parts by weight: 40-50 parts of nitrile rubber, 20-30 parts of chloroprene rubber, 10-15 parts of EPDM rubber, 20-30 parts of ethylene vinyl acetate rubber, 2-5 parts of antioxidant, 6-8 parts of vaseline, 6-8 parts of nano-boron nitride, 5-8 parts of nano-silicon nitride, 2-4 parts of TMTD, 1-3 parts of sulfur, 2-4 parts of sodium methacrylate, 3-6 parts of zinc oxide, 3-6 parts of magnesium oxide, 3-6 parts of stearic acid, 2-4 parts of carbon black, and 1-3 parts of plasticizer.

[0035] In another embodiment, the high-temperature and low-temperature resistant raw materials are mixed raw materials, composed of the following raw materials in parts by weight: 43-46 parts of nitrile rubber, 23-26 parts of chloroprene rubber, 12-14 parts of EPDM rubber, 23-26 parts of ethylene vinyl acetate rubber, 3-4 parts of antioxidant, 7 parts of vaseline, 7 parts of nano-boron nitride, 6 parts of nano-silicon nitride, 3 parts of TMTD, 2 parts of sulfur, 3 parts of sodium methacrylate, 5 parts of zinc oxide, 4 parts of magnesium oxide, 5 parts of stearic acid, 3 parts of carbon black, and 2 parts of plasticizer.

[0036] The mixed raw materials are made into plate-shaped high-temperature and low-temperature resistant masterbatch through weight proportioning, mixing and stirring, thermoplastic extrusion and plasticizing, and then the high-temperature and low-temperature resistant masterbatch is cooled and pelletized to obtain granular high-temperature and low-temperature resistant raw materials.

[0037] The high temperature and low temperature resistant raw materials are injected into the molding machine to obtain long strips of high temperature and low temperature resistant strips;

[0038] The high-temperature and low-temperature resistant raw materials are once again subjected to the injection molding process (the granular high-temperature and low-temperature resistant raw materials can be heated and fused during the injection molding process). The antioxidant, nano-boron nitride, nano-silicon nitride and TMTD inside them can be further fused with other raw materials such as nitrile rubber, chloroprene rubber, EPDM rubber, etc. in a high-temperature environment, which can significantly improve the cold and heat resistance of the high-temperature and low-temperature resistant strips.

[0039] In one embodiment, the wear-resistant raw material in S4 is composed of the following raw materials in parts by weight: 15-30 parts of silicone rubber, 10-20 parts of epoxy resin, 5-8 parts of carbon fiber, 12-15 parts of glass fiber, 5-8 parts of ceramsite, 10-12 parts of chlorinated paraffin, 8-16 parts of asphalt, 4-8 parts of quartz sand, 2-4 parts of zirconium silicate, 2-4 parts of carbon black and 6-10 parts of acrylate.

[0040] In another embodiment, the wear-resistant raw material in S4 is composed of the following raw materials in parts by weight: 20-25 parts of silicone rubber, 13-17 parts of epoxy resin, 6-7 parts of carbon fiber, 13-14 parts of glass fiber, 6-7 parts of ceramsite, 11 parts of chlorinated paraffin, 10-14 parts of asphalt, 5-7 parts of quartz sand, 3 parts of zirconium silicate, 3 parts of carbon black and 8 parts of acrylate.

[0041] Between steps S3 and S4, weaving is also included: weaving is divided into metal wire weaving for shielding effect, and polyester wire or fiber wire weaving for increasing tensile performance. The silicone rubber multi-strand wire and multiple wrapped wires in S2 are fed into the weaving machine for weaving to obtain the braided silicone rubber multi-strand wire. The braided silicone rubber multi-strand wire has better toughness and tensile strength, and the braided silicone rubber multi-strand wire is not easily broken.

[0042] There are at least four wrapping wires, which are spirally wound around the silicone rubber multi-strand wire. In this way, the wrapping of the silicone rubber multi-strand wire is more uniform, and the obtained braided silicone rubber multi-strand wire has a certain tensile resistance in all directions.

[0043] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a silicone rubber wire for home decoration, characterized in that: The steps include: S1. Wire core stretching: The single-strand wire core material is passed through the die hole of the stretching die. Under the action of the pulling force, the single-strand wire is deformed, so that its cross section is reduced and its length is increased. After stretching, the size of the wire core is detected by a measuring tool, and the wire core that meets the standard size is retained; S2, insulation extrusion: using a cable coating machine to extrude the insulation strip and the wire core in step S1, so that the insulation strip is wrapped around the wire core in step S1 to form an insulation layer, so as to obtain a single-strand silicone rubber wire; S3, cabling: twist multiple insulated single-strand silicone rubber wires in S2 together in a specific arrangement and use a cabling machine to form a cable; S4, wear-resistant layer extrusion: using an extruder to extrude wear-resistant raw materials, and coating the raw materials on the heat-resistant silicone rubber multi-strand wire to obtain the wear-resistant silicone rubber multi-strand wire.

2. A method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: The insulating layer in S2 is composed of the following raw materials in parts by weight: 20-30 parts of fluororubber, 15-25 parts of silicone rubber, 15-20 parts of glass fiber, 1-8 parts of ceramsite, 15-20 parts of clay, 8-12 parts of polyethylene, 15-19 parts of phenolic resin, 6-10 parts of graphene, 2-5 parts of quicklime, and 3-6 parts of mica.

3. The method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: The insulating layer in S2 is composed of the following raw materials in parts by weight: 24-28 parts of fluororubber, 18-20 parts of silicone rubber, 17-19 parts of glass fiber, 3-6 parts of ceramsite, 17-19 parts of clay, 9-11 parts of polyethylene, 16-18 parts of phenolic resin, 7-9 parts of graphene, 3-4 parts of quicklime, and 4-5 parts of mica.

4. The method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: The invention also includes extruding a temperature-resistant layer: using a thermoplastic extruder to extrude a high-temperature-resistant and low-temperature-resistant raw material, and using a cable coating machine to coat the high-temperature-resistant and low-temperature-resistant strip material made of the raw material on a braided silicone rubber multi-strand wire to obtain a heat-resistant silicone rubber multi-strand wire; The high temperature and low temperature resistant raw materials are mixed raw materials, which are composed of the following raw materials in parts by weight: 40-50 parts of nitrile rubber, 20-30 parts of chloroprene rubber, 10-15 parts of EPDM rubber, 20-30 parts of ethylene vinyl acetate rubber, 2-5 parts of antioxidant, 6-8 parts of vaseline, 6-8 parts of nano boron nitride, 5-8 parts of nano silicon nitride, 2-4 parts of TMTD, 1-3 parts of sulfur, 2-4 parts of sodium methacrylate, 3-6 parts of zinc oxide, 3-6 parts of magnesium oxide, 3-6 parts of stearic acid, 2-4 parts of carbon black, plasticizer 1-3 servings.

5. A method for preparing a silicone rubber wire for home decoration according to claim 4, characterized in that: The high-temperature and low-temperature resistant raw materials are mixed raw materials, which are composed of the following raw materials in parts by weight: 43-46 parts of nitrile rubber, 23-26 parts of chloroprene rubber, 12-14 parts of EPDM rubber, 23-26 parts of ethylene vinyl acetate rubber, 3-4 parts of antioxidant, 7 parts of vaseline, 7 parts of nano-boron nitride, 6 parts of nano-silicon nitride, 3 parts of TMTD, 2 parts of sulfur, 3 parts of sodium methacrylate, 5 parts of zinc oxide, 4 parts of magnesium oxide, 5 parts of stearic acid, 3 parts of carbon black, and 2 parts of plasticizer.

6. A method for preparing a silicone rubber wire for home decoration according to claim 4 or 5, characterized in that: The mixed raw materials are made into a plate-shaped high-temperature and low-temperature resistant masterbatch through weight proportioning, mixing and stirring, thermoplastic extrusion and plasticizing, and then the high-temperature and low-temperature resistant masterbatch is cooled and pelletized to obtain a granular high-temperature and low-temperature resistant raw material.

7. A method for preparing a silicone rubber wire for home decoration according to claim 6, characterized in that: The high temperature and low temperature resistant raw material is subjected to an injection molding process of an injection molding machine to obtain a long high temperature and low temperature resistant strip material.

8. The method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: The wear-resistant raw materials in S4 are composed of the following raw materials in parts by weight: 15-30 parts of silicone rubber, 10-20 parts of epoxy resin, 5-8 parts of carbon fiber, 12-15 parts of glass fiber, 5-8 parts of ceramsite, 10-12 parts of chlorinated paraffin, 8-16 parts of asphalt, 4-8 parts of quartz sand, 2-4 parts of zirconium silicate, 2-4 parts of carbon black and 6-10 parts of acrylate.

9. The method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: The wear-resistant raw materials in S4 are composed of the following raw materials in parts by weight: 20-25 parts of silicone rubber, 13-17 parts of epoxy resin, 6-7 parts of carbon fiber, 13-14 parts of glass fiber, 6-7 parts of ceramsite, 11 parts of chlorinated paraffin, 10-14 parts of asphalt, 5-7 parts of quartz sand, 3 parts of zirconium silicate, 3 parts of carbon black and 8 parts of acrylate.

10. A method for preparing a silicone rubber wire for home decoration according to claim 1, characterized in that: Between steps S3 and S4, braiding is also included: the braiding is divided into metal wire braiding for shielding effect and polyester wire or fiber wire braiding for increasing tensile performance. The single-strand silicone rubber wire and the multiple wrapped wires in S2 are fed into a braiding machine for braiding to obtain a braided silicone rubber multi-strand wire; There are at least four wrapping wires, which are spirally wound around the silicone rubber multi-strand wire.

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