Electric wire and cable with ultraviolet aging resistant function and production process of electric wire and cable

Abstract

The invention relates to the technical field of electric wires and cables, and discloses an electric wire and cable with an anti-ultraviolet aging function and a production process thereof.The anti-ultraviolet aging electric wire and cable comprises a copper body core material and an anti-ultraviolet aging composite protective sleeve, and the anti-ultraviolet aging composite protective sleeve comprises, by weight, 1-5 parts of a copper core material and 1-5 parts of an anti-ultraviolet aging composite protective sleeve body; comprising the following raw materials: 15-30 parts of low-density polyethylene, 3-5 parts of a modified anti-ultraviolet agent, 3-5 parts of a lubricant, 20-30 parts of a filler, 5-8 parts of a calcium-zinc stabilizer, 10-20 parts of a plasticizer, 8-10 parts of a flame retardant, 3-6 parts of a high-temperature-resistant functional agent and 40-50 parts of polyvinyl chloride resin, the high-temperature-resistant functional agent is nano aluminum oxide containing a polyether-ether-ketone structure, the nano aluminum oxide is modified by polyether-ether-ketone, and the high-temperature-resistant functional agent and the nano aluminum oxide can synergistically improve the high-temperature aging resistance of the protective sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wire and cable, in particular to an electric wire and cable with anti-ultraviolet aging function and a production process thereof. BACKGROUND

[0002] With the continuous development of communication technology and the increasing demand for electricity, electric wire and cable is increasingly used in various fields. Currently, the electric wire and cable on the market is basically wrapped with a single plastic insulation layer on the outer layer of the conductor, which does not have anti-ultraviolet aging function during outdoor use. Due to ultraviolet radiation and high temperature, the material often becomes brittle, softens and ages during use.

[0003] The existing technology for anti-ultraviolet radiation in electric wire and cable basically adds a single ultraviolet absorber to the outer protective sleeve or uses a single layer of anti-ultraviolet radiation protective resin. Although the above technology has good effect on anti-ultraviolet radiation, it is still limited in improving the anti-ultraviolet aging ability. The existing technology for improving the high-temperature aging resistance of electric wire and cable often uses a single high-temperature resistant material to improve the heat resistance, but the single high-temperature resistant material often has insufficient material performance, which affects the heat resistance of the electric wire and cable and limits the improvement of the high-temperature resistance of the electric wire and cable.

[0004] In view of the above problems, the present application provides an electric wire and cable with anti-ultraviolet aging function, which can solve the problems existing in the prior art. SUMMARY

[0005] In order to solve the problems mentioned in the background art, the purpose of the present application is to provide an electric wire and cable with anti-ultraviolet aging function and a production process thereof.

[0006] The purpose of the present application can be achieved by the following technical solutions: An electric wire and cable with anti-ultraviolet aging function, comprising a copper body core material and an anti-ultraviolet aging composite protective sleeve. The preparation method of the anti-ultraviolet aging composite protective sleeve comprises the following steps: Step (1): 40-50 parts by weight of polyvinyl chloride resin, 5-8 parts by weight of calcium-zinc stabilizer, 20-30 parts by weight of filler and 15-30 parts by weight of low-density polyethylene are mixed at 80-100℃ for 10-30min to prepare a premix; Step (2): 3-5 parts of modified anti-ultraviolet agent, 3-5 parts of lubricant, 10-20 parts of plasticizer, 8-10 parts of flame retardant and 3-6 parts of high-temperature resistant functional agent are added to the premix, and the temperature is raised to 120-130℃ for 10-30min. The anti-ultraviolet aging composite protective sleeve is extruded by a double-screw extruder.

[0007] Furthermore, the flame retardant is any one of antimony trioxide, melamine, and aluminum diethylphosphinate.

[0008] Furthermore, the lubricant is any one of stearic acid, magnesium stearate, and zinc stearate; and the filler is any one of calcium carbonate, calcined clay, asbestos, and diatomaceous earth.

[0009] Furthermore, the plasticizer is any one of dioctyl phthalate, diisodecyl phthalate, and trioctyl trimellitate.

[0010] Furthermore, the preparation method of the modified anti-ultraviolet functional agent comprises the following steps: Step A1: drying the hydrotalcite in a vacuum at 200-220° C. for 1-2 hours, dispersing the hydrotalcite in a sodium hydroxide solution, ultrasonically dispersing the solution for 30-50 minutes, filtering and washing the solution, and drying the solution in a vacuum at 100-110° C. for 3-5 hours to obtain activated hydrotalcite; Step A2: Disperse the activated hydrotalcite in anhydrous toluene, add 3-chloropropionyl chloride and triethylamine, react at 30-40°C for 4-5 hours, then filter, wash, and vacuum dry at 60-80°C for 4-6 hours to obtain an anti-ultraviolet functional agent intermediate; Step A3: Add the hydrotalcite intermediate and 7-aminoflavone to N,N-dimethylformamide, then add potassium carbonate, raise the temperature to 60-80° C., react in an oxygen-free environment for 12-16 hours, filter, wash, and dry to obtain a modified anti-ultraviolet functional agent.

[0011] In the above technical solution, a functionalized hydrotalcite intermediate is obtained by reacting the hydroxyl group of hydrotalcite with the acyl chloride group of 3-chloropropionyl chloride. Since the flavonoid anti-UV agent is a small molecule functional monomer, it is easy to precipitate and fall off in the matrix and cannot achieve a long-lasting anti-UV effect. In order to improve the problem of small molecule precipitation and shedding and the problem of easy agglomeration of hydrotalcite, the hydrotalcite intermediate and the anti-UV intermediate are grafted by reacting the halogen group with the amino group to obtain a modified anti-UV functional agent with both ultraviolet shielding function and ultraviolet absorption function, so that the modified anti-UV functional agent can be evenly dispersed in the matrix and is not easy to fall off and precipitate.

[0012] Furthermore, in step A1, the mass fraction of the sodium hydroxide solution is 70-80%.

[0013] Furthermore, the preparation method of the high temperature resistant functional agent comprises the following steps: Step B1: adding polyetheretherketone to concentrated sulfuric acid, heating to 80-100°C and stirring for 30-50 minutes, filtering, washing, and drying after the reaction to obtain sulfonic acid-polyetheretherketone, soaking nano-alumina in sodium hydroxide solution for 2-3 hours, then filtering, washing, and drying under vacuum at 100-110°C for 2-3 hours to obtain activated nano-alumina; Step B2: Disperse the activated nano-alumina in an ethanol solution, add γ-aminopropyltriethoxysilane, react at 60-80°C for 4-6 hours, filter, wash, and dry after the reaction to obtain amino-treated nano-alumina; Step B3: Disperse the sulfonic acid-polyetheretherketone in anhydrous dichloromethane and add a chlorinating agent. Under a nitrogen atmosphere, slowly stir in an ice-water bath and gradually raise the temperature to 25-30°C for reaction for 6-8 hours. Then adjust the pH to neutral, filter, wash, and dry to obtain sulfonyl chloride polyetheretherketone. Step B4: dissolve polyetheretherketone sulfonyl chloride in a solvent, add triethylamine and amino-treated nano-alumina, react in an ice-water bath under an oxygen-free environment for 1-2 hours, heat to 30-40°C and react for 10-12 hours, filter, wash and dry to obtain a high-temperature resistant functional agent.

[0014] In the above technical solution, since a single polyetheretherketone (PEK) cannot meet the high-temperature resistance requirements in harsh environments in wire and cable materials, the PEEK is treated with concentrated sulfuric acid and sulfonyl chloride to obtain functionalized PEEK. The sulfonyl chloride group reacts with the amino group grafted with nano-alumina to obtain nano-alumina containing a PEEK structure. Since the interaction between nano-alumina and the matrix is ​​weak, when nano-alumina is used alone to improve the high-temperature resistance of the material, it is more likely to agglomerate and the improvement effect is limited. Therefore, PEEK is grafted with nano-alumina, and both can improve the high-temperature resistance of the matrix and improve the limitations of the application of a single material.

[0015] Furthermore, in step B2, the volume fraction of the ethanol solution is 50-60%; in step B3, the chlorinating agent is any one of thionyl chloride, phosphorus pentachloride, and phosphorus oxychloride.

[0016] Furthermore, in step B4, the solvent is anhydrous toluene or tetrahydrofuran.

[0017] A method for preparing a wire and cable with anti-ultraviolet aging functionality comprises the following steps: Step 1: Twist 10-12 tinned copper wires with a diameter of 0.8-1.2 mm to obtain a copper core; Step 2: The anti-ultraviolet aging composite protective cover extruded by the double-screw extruder is then coated on the surface of the copper core material, and after cooling, the anti-ultraviolet aging function wire and cable is obtained.

[0018] The beneficial effects of the present application are: (1) The present application can improve the self-aggregation problem of hydrotalcite by preparing hydrotalcite containing flavone structure, and the grafted flavone structure can improve the self-aggregation problem of hydrotalcite. Hydrotalcite itself has high refractive index and strong ultraviolet absorption capacity, which can endow the composite protective sleeve with ultraviolet resistance. The ultraviolet-resistant small molecules of flavone structure are easy to separate and fall off when applied alone in the matrix, and are not easy to resist ultraviolet light for a long time. The combination of ultraviolet-resistant small molecules and hydrotalcite through chemical bonds can solve the problem of easy separation and falling off when the ultraviolet-resistant small molecules are applied alone, and the cross-conjugated system in the molecular structure can make the flavonoids have two characteristic absorption bands in the near ultraviolet region, which can synergistically enhance the ultraviolet resistance of the matrix. In the actual ultraviolet aging test, the performance of the wire and cable protective sleeve can still reach 90% after aging.

[0019] (2) The present application can greatly improve the high-temperature resistance of the matrix by preparing nano-aluminum oxide containing polyether ether ketone structure. Polyether ether ketone has excellent high-temperature resistance due to its many benzene rings, which can improve the high-temperature resistance of the matrix. At the same time, the nano-aluminum oxide is modified by polyether ether ketone, and the self-aggregation phenomenon is greatly improved, so that the polymer can be stably stored in the protective sleeve. The combination of the two can synergistically and durably improve the high-temperature aging resistance of the protective sleeve. After the actual high-temperature test at 150℃ / 168h, only 15% of the performance is lost.

[0020] Of course, implementing any product of the present application does not necessarily require achieving all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The figure is the thermogravimetric analysis test figure of the hydrotalcite intermediate and the modified ultraviolet-resistant agent in Example 1, and the a curve is the hydrotalcite intermediate, and the b curve is the modified ultraviolet-resistant functional agent. Figure 2 The figure is the thermogravimetric analysis test figure of the aminated nano-aluminum oxide and the high-temperature-resistant functional agent in Example 1, and the c curve is the aminated nano-aluminum oxide, and the d curve is the high-temperature-resistant functional agent. DETAILED DESCRIPTION

[0023] 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 any creative efforts shall fall within the scope of protection of the present invention.

[0024] Example 1 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 40 parts of polyvinyl chloride resin, 5 parts of calcium zinc stabilizer, 20 parts of calcium carbonate filler, and 15 parts of low-density polyethylene were mixed at 80° C. for 10 minutes to prepare a premix; Step 2: Add 3 parts of anti-ultraviolet agent, 20 parts of plasticizer dioctyl phthalate, 3 parts of high-temperature resistant functional agent, and 8 parts of flame retardant antimony trioxide to the premix, heat to 120°C and stir for 10 minutes, and extrude the anti-ultraviolet aging composite protective cover through a twin-screw extruder.

[0025] The preparation method of the modified anti-ultraviolet functional agent comprises the following steps: Step A1: 1 g of hydrotalcite was dried under vacuum at 200° C. for 1 hour, then dispersed in 30 ml of 80% sodium hydroxide solution, ultrasonically dispersed for 30 minutes, filtered, washed, and dried under vacuum at 100° C. for 3 hours to obtain activated hydrotalcite; Step A2: Disperse 0.8 g of activated hydrotalcite in 25 ml of anhydrous toluene, add 0.5 g of 3-chloropropionyl chloride and 0.05 g of triethylamine, react at 30° C. for 4 h, then filter, wash, and vacuum dry at 60° C. for 4 h to obtain an anti-UV functional agent intermediate; Step A3: 1.2 g of the hydrotalcite intermediate and 0.9 g of 7-aminoflavone were added to 32 ml of N,N-dimethylformamide, followed by the addition of 0.03 g of potassium carbonate. The mixture was heated to 65° C. and reacted in an oxygen-free environment for 12 h. After the reaction, the mixture was filtered, washed, and dried to obtain a modified anti-UV functional agent.

[0026] Weigh 1 g each of the hydrotalcite intermediate prepared in step A2 and the modified anti-ultraviolet functional agent prepared in step A3, and perform thermogravimetric analysis using a TGA-101 thermogravimetric analyzer. Figure 1 As shown, curve a is the hydrotalcite intermediate, and curve b is the modified anti-UV functional agent. The test found that the hydrotalcite intermediate decomposed significantly at around 220°C, and the final mass residual rate was 87.14%, which was due to the grafting of 3-chloropropionyl chloride on the surface of the hydrotalcite. The high-temperature resistant functional agent decomposed significantly at around 287°C, and the final mass residual rate was 75.71%, which was due to the decomposition of 7-aminoflavone and 3-chloropropyl grafted on the surface.

[0027] The preparation method of the high temperature resistant functional agent comprises the following steps: Step B1: Add 1.2 g of polyetheretherketone to 25 ml of concentrated sulfuric acid, heat to 80° C. and stir for 50 min. After the reaction, filter, wash, and dry to obtain sulfonic acid-polyetheretherketone. Soak 1.2 g of nano-alumina in sodium hydroxide solution for 2 h, then filter, wash, and dry at 100° C. under vacuum for 2 h to obtain activated nano-alumina. Step B2: Disperse 1.1 g of activated nano-alumina in 50% ethanol solution, add 0.3 g of γ-aminopropyltriethoxysilane, react at 80° C. for 4 h, filter, wash, and dry after the reaction to obtain amino-treated nano-alumina; Step B3: Disperse 1.2 g of sulfonic acid-polyetheretherketone in 35 ml of anhydrous dichloromethane, add 2 g of chlorinating agent thionyl chloride, slowly stir in an ice-water bath under a nitrogen atmosphere, gradually raise the temperature to 25°C, and react for 6 h. Then adjust the pH to neutral, filter, wash, and dry to obtain sulfonyl chloride polyetheretherketone; Step B4: Dissolve 0.8 g of sulfonyl chloride polyetheretherketone in 32 ml of anhydrous toluene, add 0.5 g of triethylamine and 1.5 g of amino-treated nano-alumina, react in an ice-water bath under an oxygen-free environment for 1 hour, heat to 30°C and react for 10 hours, filter, wash and dry to obtain a high-temperature resistant functional agent.

[0028] Weigh 1g each of the amino-treated nano-alumina prepared in step B2 and the high-temperature resistant functional agent prepared in step B4, and perform thermogravimetric analysis using a TGA-101 thermogravimetric analyzer. Figure 2 As shown, curve c is amino-alumina, and curve d is high-temperature resistant functional agent. The test found that amino-alumina decomposed significantly at around 216°C, and the final mass residual rate was 88.76%, which was caused by the decomposition of γ-aminopropyltriethoxysilane grafted on the surface of nano-zinc oxide. The high-temperature resistant functional agent decomposed significantly at around 330°C, and the final mass residual rate was 70.11%, which was caused by the decomposition of polyetheretherketone and γ-aminopropyltriethoxysilane grafted on the surface.

[0029] Example 2 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 4 parts of modified anti-ultraviolet agent, 4 parts of lubricant magnesium stearate, 20 parts of plasticizer dioctyl phthalate, 5 parts of high temperature resistant functional agent, and 9 parts of flame retardant antimony trioxide to the premix, heat to 125°C and stir for 25 minutes, and extrude the anti-ultraviolet aging composite protective cover through a twin-screw extruder.

[0030] The modified anti-ultraviolet agent and high temperature resistant functional agent are the same as those in Example 1.

[0031] Example 3 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 50 parts of polyvinyl chloride resin, 8 parts of calcium zinc stabilizer, 30 parts of calcium carbonate filler, and 30 parts of low-density polyethylene were mixed at 100° C. for 30 minutes to prepare a premix; Step 2: Add 5 parts of modified anti-UV agent, 5 parts of lubricant magnesium stearate, 20 parts of plasticizer dioctyl phthalate, 6 parts of high temperature resistant functional agent, and 10 parts of flame retardant antimony trioxide to the premix, heat to 130°C and stir for 30 minutes, extrude the anti-UV aging composite protective cover through a twin-screw extruder, and then cover the anti-UV aging composite protective cover on the surface of the copper core material. After cooling, obtain anti-UV aging function wires and cables.

[0032] The modified anti-ultraviolet agent and high temperature resistant functional agent are the same as those in Example 1.

[0033] Comparative Example 1 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 4 parts of hydrotalcite, 18 parts of plasticizer dioctyl phthalate, 5 parts of high temperature resistant functional agent, and 9 parts of flame retardant antimony trioxide to the premix, heat to 125°C and stir for 25 minutes, and extrude the anti-UV aging composite protective cover through a twin-screw extruder.

[0034] The hydrotalcite and high temperature resistant functional agent are the same as those in Example 1.

[0035] Comparative Example 2 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 4 parts of modified anti-ultraviolet agent, 4 parts of lubricant magnesium stearate, 18 parts of plasticizer dioctyl phthalate, 5 parts of nano-alumina, and 9 parts of flame retardant antimony trioxide to the premix, heat to 125°C and stir for 25 minutes, and extrude the anti-ultraviolet aging composite protective cover through a twin-screw extruder.

[0036] The modified anti-ultraviolet agent and nano-alumina are the same as those in Example 1.

[0037] Comparative Example 3 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 20 parts of plasticizer dioctyl phthalate, 5 parts of high temperature resistant functional agent, and 9 parts of flame retardant antimony trioxide to the premix, heat to 125°C and stir for 25 minutes, and extrude the anti-UV aging composite protective cover through a twin-screw extruder.

[0038] The high temperature resistant functional agent is the same as that in Example 1.

[0039] Comparative Example 4 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 4 parts of modified anti-ultraviolet agent, 4 parts of lubricant magnesium stearate, 20 parts of plasticizer dioctyl phthalate, and 9 parts of flame retardant antimony trioxide to the premix, heat to 125°C and stir for 25 minutes, and extrude the anti-ultraviolet aging composite protective cover through a twin-screw extruder.

[0040] The modified anti-ultraviolet agent is the same as that in Example 1.

[0041] Comparative Example 5 The preparation method of the anti-ultraviolet aging composite protective cover comprises the following steps: Step 1: By weight, 46 parts of polyvinyl chloride resin, 6 parts of calcium zinc stabilizer, 28 parts of calcium carbonate filler, and 20 parts of low-density polyethylene were mixed at 86° C. for 18 minutes to prepare a premix; Step 2: Add 20 parts of plasticizer dioctyl phthalate and 9 parts of flame retardant antimony trioxide to the premix, heat to 125° C. and stir for 25 minutes, and extrude the anti-UV aging composite protective cover through a twin-screw extruder.

[0042] Performance testing: The anti-ultraviolet aging composite protective sleeves prepared in Examples 1 to 3 of the present invention and Comparative Examples 1 to 5 were subjected to high-temperature anti-aging tests and ultraviolet aging resistance tests, respectively. The high-temperature anti-aging test was carried out in accordance with the general experimental method standard for insulation and sheath materials of cables and optical cables and the method required by GB / T2951.12-2008. The test conditions were 150°C / 168h. For the ultraviolet aging resistance test, the samples were placed in a room with a wavelength of 313nm and an irradiance of 0.72 / m 2 The samples that have undergone high temperature anti-aging test and UV aging resistance test and the samples that have not undergone aging test are tested in accordance with the requirements of GBT10401-2006 for tensile strength test and elongation at break test. The results are shown in the following table: As can be seen from the above table, in the UV aging resistance and high temperature aging resistance tests, the changes in tensile strength and elongation at break of Examples 1-3 of the present invention after aging are small, and they have excellent UV aging resistance and high temperature aging resistance.

[0043] In comparative example 1, when preparing the anti-ultraviolet aging composite protective cover, only hydrotalcite was added to improve the anti-ultraviolet aging function. Since the hydrotalcite itself is easy to agglomerate, it cannot exert its anti-ultraviolet performance well in the matrix, so the anti-ultraviolet aging function is poor. For the improvement of the high-temperature aging function, the prepared high-temperature resistant functional agent was added, which has nano-alumina containing a polyetheretherketone structure and is excellent in high-temperature resistance.

[0044] In comparative example 2, when preparing the anti-ultraviolet aging composite protective cover, the prepared modified anti-ultraviolet agent was added to improve the anti-ultraviolet aging function. The hydrotalcite containing flavonoid structure can be evenly dispersed in the matrix to improve the anti-ultraviolet aging performance, so it is excellent in terms of ultraviolet aging resistance. For improving the high-temperature aging resistance, a single nano-alumina was added. Because nano-alumina is easy to agglomerate in the matrix and cannot be evenly dispersed, the improvement of the high-temperature aging resistance of the matrix is ​​limited, and the high-temperature aging resistance is poor.

[0045] In the preparation of the anti-ultraviolet aging composite protective cover, comparative example 3 did not add anti-ultraviolet aging functional additives, so it does not have anti-ultraviolet aging function, and the test results in the anti-ultraviolet aging test are very poor. In terms of improving the high-temperature aging function, the prepared high-temperature aging agent was added, and polyetheretherketone improved the agglomeration phenomenon of nano-alumina, so that it can be evenly dispersed in the matrix. Both polyetheretherketone and nano-alumina can effectively improve the high-temperature aging resistance of the matrix, so the test results in the high-temperature aging test are relatively excellent.

[0046] In comparative example 4, when preparing the anti-ultraviolet aging composite protective cover, the prepared modified anti-ultraviolet agent was added to improve the anti-ultraviolet aging function. For the high-temperature aging function, no functional additives with high-temperature aging resistance were added. The high-temperature aging test results were very poor. The flavonoid structure and hydrotalcite of the modified anti-ultraviolet agent can be evenly dispersed in the matrix and coordinately improve the anti-ultraviolet aging function. The anti-ultraviolet aging test results are excellent.

[0047] In the preparation of the anti-ultraviolet aging composite protective cover, no high-temperature aging-resistant functional agent and anti-ultraviolet aging functional agent were added to Comparative Example 5, so the results in the high-temperature aging resistance test and the ultraviolet aging resistance test were the worst.

[0048] The above content is merely an example and explanation of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A wire and cable with anti-ultraviolet aging functionality, characterized in that: Including copper core material and anti-ultraviolet aging composite protective cover; The method for preparing the anti-ultraviolet aging composite protective cover comprises the following steps: Step (1): by weight, 40-50 parts of polyvinyl chloride resin, 5-8 parts of calcium zinc stabilizer, 20-30 parts of filler, and 15-30 parts of low-density polyethylene are mixed at 80-100° C. for 10-30 minutes to prepare a premix; Step (2): add 3-5 parts of modified anti-ultraviolet agent, 3-5 parts of lubricant, 10-20 parts of plasticizer, 8-10 parts of flame retardant, and 3-6 parts of high temperature resistant functional agent to the premix, heat to 120-130°C and stir for 10-30 minutes, and extrude the anti-ultraviolet aging composite protective cover through a twin-screw extruder.

2. The wire and cable with anti-ultraviolet aging functionality according to claim 1, characterized in that: The flame retardant is any one of antimony trioxide, melamine, and aluminum diethylphosphinate.

3. The wire and cable with anti-ultraviolet aging functionality according to claim 1, characterized in that: The lubricant is any one of stearic acid, magnesium stearate, and zinc stearate; the filler is any one of calcium carbonate, calcined clay, asbestos, and diatomaceous earth.

4. The wire and cable with anti-ultraviolet aging functionality according to claim 1, characterized in that: The plasticizer is any one of dioctyl phthalate, diisodecyl phthalate, and trioctyl trimellitate.

5. The wire and cable with anti-ultraviolet aging functionality according to claim 1, characterized in that: The method for preparing the modified anti-ultraviolet functional agent comprises the following steps: Step A1: drying the hydrotalcite in a vacuum at 200-220° C. for 1-2 hours, dispersing the hydrotalcite in a sodium hydroxide solution, ultrasonically dispersing the solution for 30-50 minutes, filtering and washing the solution, and drying the solution in a vacuum at 100-110° C. for 3-5 hours to obtain activated hydrotalcite; Step A2: Disperse the activated hydrotalcite in anhydrous toluene, add 3-chloropropionyl chloride and triethylamine, react at 30-40°C for 4-5 hours, then filter, wash, and vacuum dry at 60-80°C for 4-6 hours to obtain an anti-ultraviolet functional agent intermediate; Step A3: Add the hydrotalcite intermediate and 7-aminoflavone to N,N-dimethylformamide, then add potassium carbonate, raise the temperature to 60-80° C., react in an oxygen-free environment for 12-16 hours, filter, wash, and dry to obtain a modified anti-ultraviolet functional agent.

6. The wire and cable with anti-ultraviolet aging functionality according to claim 5, characterized in that: In step A1, the mass fraction of the sodium hydroxide solution is 70-80%.

7. The wire and cable with anti-ultraviolet aging functionality according to claim 1, characterized in that: The preparation method of the high temperature resistant functional agent comprises the following steps: Step B1: adding polyetheretherketone to concentrated sulfuric acid, heating to 80-100°C and stirring for 30-50 minutes, filtering, washing, and drying after the reaction to obtain sulfonic acid-polyetheretherketone, soaking nano-alumina in sodium hydroxide solution for 2-3 hours, then filtering, washing, and drying under vacuum at 100-110°C for 2-3 hours to obtain activated nano-alumina; Step B2: Disperse the activated nano-alumina in an ethanol solution, add γ-aminopropyltriethoxysilane, react at 60-80°C for 4-6 hours, filter, wash, and dry after the reaction to obtain amino-treated nano-alumina; Step B3: Disperse the sulfonic acid-polyetheretherketone in anhydrous dichloromethane and add a chlorinating agent. Under a nitrogen atmosphere, slowly stir in an ice-water bath and gradually raise the temperature to 25-30°C for reaction for 6-8 hours. Then adjust the pH to neutral, filter, wash, and dry to obtain sulfonyl chloride polyetheretherketone. Step B4: dissolve polyetheretherketone sulfonyl chloride in a solvent, add triethylamine and amino-treated nano-alumina, react in an ice-water bath under an oxygen-free environment for 1-2 hours, heat to 30-40°C and react for 10-12 hours, filter, wash and dry to obtain a high-temperature resistant functional agent.

8. The wire and cable with anti-ultraviolet aging functionality according to claim 7, characterized in that: In step B2, the volume fraction of the ethanol solution is 50-60%; in step B3, the chlorinating agent is any one of thionyl chloride, phosphorus pentachloride, and phosphorus oxychloride.

9. The wire and cable with anti-ultraviolet aging functionality according to claim 7, characterized in that: In step B4, the solvent is anhydrous toluene or tetrahydrofuran.

10. The method for preparing a wire and cable with anti-ultraviolet aging functionality according to claim 1, wherein: The following steps are involved: Step 1: Twist 10-12 tinned copper wires with a diameter of 0.8-1.2 mm to obtain a copper core; Step 2: The anti-ultraviolet aging composite protective cover extruded by the double-screw extruder is then coated on the surface of the copper core material, and after cooling, the anti-ultraviolet aging function wire and cable is obtained.

Images