CN109880316B - Production process of thin-wall insulated wire - Google Patents
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Abstract
The invention provides a production process of a thin-wall insulated wire. The production process comprises the following steps: 1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized to be used as a first insulating layer material; polyethylene glycol terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized to be used as a second insulating layer material; 2) preheating a metal core wire, then pulling the metal core wire to the upper wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers; 3) and cooling and stretching, and collecting to obtain the thin-wall insulated wire. According to the production process, the thickness of the insulating layer of the prepared insulated wire is controlled to be 0.1-1 mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; wear resistance and smooth surface, and the static friction coefficient is less than or equal to 0.155.
Description
Technical Field
The invention belongs to the technical field of processing of insulated wires, and relates to a production process of a thin-wall insulated wire.
Background
The insulated wire is formed by uniformly and hermetically wrapping a layer of non-conductive material, such as resin, plastic, silicon rubber, PVC and the like, on the periphery of the wire to form an insulating layer, so that the electric leakage, short circuit, electric shock and other accidents caused by the contact of the conductor and the outside are prevented.
The existing insulated wire has short service life, is not corrosion-resistant and is easy to expose the inner layer wire outside, so that the harm of life safety or equipment damage is brought to users or attached products.
CN103440929A discloses a method for manufacturing a three-layer insulated wire, which sequentially comprises the following steps: (1) drawing the thin copper rod into a copper wire; (2) paying off; (3) annealing treatment; (4) extruding and molding; (5) detecting; (6) and (6) taking up the wire. The invention adopts high-frequency annealing to replace a preheating process, can realize continuous production without attachments on the surface of the copper wire, simultaneously adjusts the annealing degree and the elongation of the copper wire by controlling the high-frequency annealing process, solves the problem that the insulation layer is easy to separate because the attachments are on the surface of the copper wire, reduces the rejection rate and improves the production efficiency. However, the corrosion resistance, toughness and wear resistance of the three-layer insulated wire prepared by the process are all to be improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a production process of a thin-wall insulated wire, the thickness of the insulation layer of the prepared insulated wire is controlled to be 0.1-1 mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
In order to achieve the purpose, the invention adopts the following technical scheme:
a production process of a thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized to be used as a first insulating layer material; polyethylene glycol terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized to be used as a second insulating layer material;
2) preheating a metal core wire, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
The thin wall of the invention means that the thickness of the insulating layer is less than 1mm, in particular 0.1-1 mm.
According to the insulated wire, the first insulating layer is made of the polyethylene glycol terephthalate, the polytetrafluoroethylene, the thermoplastic elastomer and the compatilizer, so that the high temperature resistance, the corrosion resistance and the toughness of the insulated wire can be greatly enhanced; the second insulating layer is made of polyethylene glycol terephthalate, polyamide, talcum powder and a stabilizer, so that the insulated wire has good wear resistance and ageing resistance; by the production process, the thickness of the insulation layer of the prepared insulated wire is controlled to be 0.1-1 mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; the product is wear-resistant and smooth in surface, the static friction coefficient is less than or equal to 0.155, the product can meet the requirement of high-speed winding of an automatic winding machine, and the number of automatic production lines is reduced.
The thickness of the two insulating layers of the thin-wall insulated wire is 0.1-1 mm, for example, the thickness of the two insulating layers is 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1 mm.
In the step 1), the first insulating layer comprises the following components in parts by mass:
50-70 parts of polyethylene terephthalate, for example, 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts and 70 parts of polyethylene terephthalate.
The polytetrafluoroethylene is 30 to 40 parts, for example, the polytetrafluoroethylene is 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts by mass.
10 to 20 parts of thermoplastic elastomer, for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts of thermoplastic elastomer.
5-10 parts of a compatilizer, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts and 10 parts of the compatilizer.
The thermoplastic elastomer is any one or a mixture of at least two of styrene thermoplastic elastomers, polyolefin thermoplastic elastomers and thermoplastic polyurethane elastomers. Typical but non-limiting combinations of the mixtures are mixtures of styrenic thermoplastic elastomers, polyolefin-based thermoplastic elastomers, mixtures of styrenic thermoplastic elastomers, thermoplastic polyurethane elastomers, mixtures of polyolefin-based thermoplastic elastomers and thermoplastic polyurethane elastomers, and mixtures of styrenic thermoplastic elastomers, polyolefin-based thermoplastic elastomers, and thermoplastic polyurethane elastomers.
Preferably, the compatibilizers are both ethylene-acrylate-maleic anhydride copolymers.
In the step 1), the second insulating layer comprises the following components in parts by mass:
40-60 parts of polyethylene terephthalate, for example, 40 parts, 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts and 50 parts of polyethylene terephthalate.
20 to 40 parts of polyamide, for example, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts and 40 parts of polyamide by mass.
10-20 parts of talcum powder, for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts and 20 parts of talcum powder.
5-10 parts of stabilizer, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts and 10 parts of stabilizer by mass.
The stabilizer is N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 3-benzenedicarboxamide.
In step 2), the preheating temperature is 80-90 ℃, for example, the preheating temperature is 80 ℃, 81 ℃, 82 ℃, 83 ℃, 84 ℃, 85 ℃, 86 ℃, 87 ℃, 88 ℃, 89 ℃ and 90 ℃.
The plasticizing temperature is 280-320 ℃, for example, the plasticizing temperature is 280 ℃, 290 ℃, 300 ℃, 310 ℃ and 320 ℃.
In the step 2), the metal core wire is a bare copper wire, an enameled copper wire, a tinned copper wire or a stranded copper wire.
Preferably, the diameter of the metal core wire is 0.15-1.5 mm, for example, the diameter of the metal core wire is 0.15mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5 mm.
In the step 3), the step of detecting electric leakage is further included after the cooling and stretching.
Wherein, the voltage of the electric leakage detection is more than 5500 KV.
Compared with the prior art, the invention has the beneficial effects that:
according to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 0.1-1 mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for multiple times, has no cracks, is wear-resistant and smooth in surface, has the static friction coefficient less than or equal to 0.155, and can meet the requirements of high-speed winding of an automatic winding machine and reduction of automatic production lines.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Unless otherwise specified, various starting materials of the present invention are commercially available or prepared according to conventional methods in the art.
The invention relates to a production process of a thin-wall insulated wire, which comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized to be used as a first insulating layer material; polyethylene glycol terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized to be used as a second insulating layer material;
2) preheating a metal core wire, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
The production process of the thin-wall insulated wire of the embodiment is used for preparing the thin-wall insulated wire according to the production process.
Example 1
The thin-wall insulated wire comprises a metal core wire and an insulating layer coated outside the metal core wire, wherein the metal core wire is a bare copper wire, the diameter of the metal core wire is 0.8mm, and the insulating layer is a first insulating layer and a second insulating layer from inside to outside in sequence; wherein the content of the first and second substances,
the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is a mixture of 6 parts of styrene thermoplastic elastomer and 6 parts of polyolefin thermoplastic elastomer.
The second insulating layer comprises the following components in parts by mass:
the preparation process of the thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized at 310 ℃ to be taken as a first insulating layer material; polyethylene terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized at 300 ℃ to be used as a second insulating layer material;
2) preheating a metal core wire at 80 ℃, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
According to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 0.7mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin welding property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
Example 2
The thin-wall insulated wire comprises a metal core wire and an insulating layer coated outside the metal core wire, wherein the metal core wire is an enameled copper wire, the diameter of the metal core wire is 1mm, the insulating layer is a first insulating layer and a second insulating layer from inside to outside in sequence, and the thickness of the insulating layer is 1 mm; wherein the content of the first and second substances,
the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is a styrenic thermoplastic elastomer.
The second insulating layer comprises the following components in parts by mass:
the preparation process of the thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized at 320 ℃ to be taken as a first insulating layer material; polyethylene terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized at 310 ℃ to be used as a second insulating layer material;
2) preheating a metal core wire at 85 ℃, drawing the metal core wire to the upper line, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
According to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 1mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
Example 3
The thin-wall insulated wire comprises a metal core wire and an insulating layer coated outside the metal core wire, wherein the metal core wire is a tinned copper wire, the diameter of the metal core wire is 1.5mm, and the insulating layer is a first insulating layer and a second insulating layer from inside to outside in sequence; wherein the content of the first and second substances,
the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is any one or a mixture of at least two of 3 parts of styrene thermoplastic elastomer, 3 parts of polyolefin thermoplastic elastomer and 4 parts of thermoplastic polyurethane elastomer.
The second insulating layer comprises the following components in parts by mass:
the preparation process of the thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized at 300 ℃ to be taken as a first insulating layer material; polyethylene terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized at 290 ℃ to be used as a second insulating layer material;
2) preheating a metal core wire at 86 ℃, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
According to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 1mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
Example 4
The thin-wall insulated wire comprises a metal core wire and an insulating layer coated outside the metal core wire, wherein the metal core wire is a stranded copper wire, the diameter of the metal core wire is 1.2mm, and the insulating layer is sequentially provided with a first insulating layer and a second insulating layer from inside to outside; wherein the content of the first and second substances,
the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is a mixture of 5 parts of polyolefin thermoplastic elastomer and 10 parts of thermoplastic polyurethane elastomer.
The second insulating layer comprises the following components in parts by mass:
the preparation process of the thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized at 310 ℃ to be taken as a first insulating layer material; polyethylene terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized at 320 ℃ to be used as a second insulating layer material;
2) preheating a metal core wire at 90 ℃, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
According to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 0.9mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin welding property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
Example 5
The thin-wall insulated wire comprises a metal core wire and an insulating layer coated outside the metal core wire, wherein the metal core wire is a bare copper wire, the diameter of the metal core wire is 1.5mm, and the insulating layer is sequentially provided with a first insulating layer and a second insulating layer from inside to outside; wherein the content of the first and second substances,
the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is thermoplastic polyurethane elastomer.
The second insulating layer comprises the following components in parts by mass:
the preparation process of the thin-wall insulated wire comprises the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized at 280 ℃ to be taken as a first insulating layer material; polyethylene terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized at 300 ℃ to be used as a second insulating layer material;
2) preheating a metal core wire at 88 ℃, drawing the metal core wire to the upper line, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) and cooling and stretching, and receiving the material to obtain the thin-wall insulated wire.
According to the production process of the thin-wall insulated wire, the thickness of the insulating layer of the prepared insulated wire is controlled to be 1mm, the insulated wire can be directly welded without peeling off the outer layer, the direct welding property is excellent, and the tin soldering property is not more than 3s at 420-450 ℃; after ageing and baking at 200 ℃, the insulating layer is bent and stretched for many times, has no cracks, is wear-resistant and has a smooth surface, and the static friction coefficient is less than or equal to 0.155.
The present invention is illustrated by the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, i.e. it is not meant to imply that the present invention must rely on the above-mentioned detailed process equipment and process flow to be practiced. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (5)
1. A production process of a thin-wall insulated wire is characterized by comprising the following steps:
1) polyethylene terephthalate, polytetrafluoroethylene, a thermoplastic elastomer and a compatilizer are taken as raw materials, and the raw materials are mixed and plasticized to be used as a first insulating layer material; polyethylene glycol terephthalate, polyamide, talcum powder and a stabilizer are used as raw materials, and the raw materials are mixed and plasticized to be used as a second insulating layer material;
2) preheating a metal core wire, then drawing the metal core wire, and respectively coating the first insulating layer material and the second insulating layer material plasticized in the step 1) on the metal core wire in sequence to obtain an insulating wire with two insulating layers;
3) after cooling and stretching, receiving materials to obtain the thin-wall insulated wire;
the thickness of the two insulating layers of the thin-wall insulated wire is 0.2-1 mm;
the diameter of the metal core wire is 0.15-1.5 mm;
in the step 1), the first insulating layer comprises the following components in parts by mass:
the thermoplastic elastomer is any one or a mixture of at least two of styrene thermoplastic elastomers, polyolefin thermoplastic elastomers and thermoplastic polyurethane elastomers;
the compatilizer is an ethylene-acrylate-maleic anhydride copolymer;
in the step 1), the second insulating layer comprises the following components in parts by mass:
the stabilizer is N, N' -bis (2,2,6, 6-tetramethyl-4-piperidyl) -1, 3-benzenedicarboxamide.
2. The production process according to claim 1, wherein in the step 2), the preheating temperature is 80-90 ℃.
3. The production process according to claim 1, wherein the temperature of the plasticizing is 280 to 320 ℃.
4. The production process according to claim 1, wherein in step 2), the metal core wire is a bare copper wire, an enameled copper wire, a tinned copper wire or a stranded copper wire.
5. The production process according to claim 1, wherein the step 3) further comprises a step of detecting leakage after the cooling and stretching.
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| FR1373508A (en) * | 1963-10-31 | 1964-09-25 | C A T T A N E O S P A | Plastic blade for rolling shutters |
| JPS5250386B2 (en) * | 1972-12-29 | 1977-12-23 | ||
| JPH03226914A (en) * | 1990-01-31 | 1991-10-07 | Fujikura Ltd | Insulated wire |
| KR100439695B1 (en) * | 2003-11-07 | 2004-07-12 | 영창실리콘 주식회사 | The several layer insulated wire |
| CN201853517U (en) * | 2010-11-23 | 2011-06-01 | 深圳市大润科技有限公司 | Straight welding type three-layer insulating wire with tin-plated copper conductor |
| CN105810308A (en) * | 2014-12-31 | 2016-07-27 | 上海川叶电子科技有限公司 | Silver-plated copper conductor three-layer insulating wire |
| CN106398130B (en) * | 2016-09-21 | 2018-07-03 | 安徽建筑大学 | TPEE/TPU/PTFE composite cables material and preparation method |
| CN106995591B (en) * | 2017-03-21 | 2019-07-12 | 江阴爱科森博顿聚合体有限公司 | Super soft type optical fiber secondary cocoon PBT special material of one kind and preparation method thereof |
| CN108231255A (en) * | 2017-12-27 | 2018-06-29 | 深圳市凯中和东新材料有限公司 | A kind of halogen-free environmental F grades straight weldering three layer insulation wires |
| CN207925154U (en) * | 2018-01-31 | 2018-09-28 | 广州万宝电子材料有限公司 | A kind of few straight weldering type three layer insulation wire of soldering melting loss |
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