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Preparation technology of low-smoke and high temperature-resistant photovoltaic cable

A photovoltaic cable and preparation process technology, used in cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of cable insulation damage, injury, fire personnel and other problems, achieve excellent high temperature resistance performance, improve bending performance, The effect of improving the flame retardant efficiency

Inactive Publication Date: 2019-04-26
WUXI XINHONGYE WIRE & CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the strength of the outer sheath of the cable is not enough, the insulation layer of the cable will be severely damaged, which will affect the service life of the entire cable, and in severe cases, cause problems such as short circuit, fire and personal injury hazards.

Method used

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  • Preparation technology of low-smoke and high temperature-resistant photovoltaic cable
  • Preparation technology of low-smoke and high temperature-resistant photovoltaic cable
  • Preparation technology of low-smoke and high temperature-resistant photovoltaic cable

Examples

Experimental program
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Effect test

Embodiment 1~4

[0024] Examples 1-4: A preparation process of a low-smoke and high-temperature resistant photovoltaic cable, the low-smoke and high-temperature resistant photovoltaic cable includes a copper conductor 1, an inner insulating layer 2 and an outer sheath layer 3 coated on the outer surface of the copper conductor 1 , the copper conductor 1 is formed by twisting a plurality of copper wires 101, and the outer sheath layer 3 is coated on the outer surface of the inner insulating layer 2;

[0025] The outer sheath layer 3 is composed of the following components by weight: as shown in Table 1:

[0026] Table 1

[0027]

Embodiment 1

[0028] The antioxidant of embodiment 1 is antioxidant 1010, the antioxidant of embodiment 2 is antioxidant 245, the antioxidant of embodiment 3 is distearyl thiodipropionate, the antioxidant of embodiment 4 The agent is antioxidant 168;

[0029] The content of vinyl acetate in the above-mentioned ethylene-vinyl acetate copolymer is 16-40%.

[0030] The above-mentioned SEBS is a linear three-block copolymer with polystyrene as the terminal block and ethylene-butylene copolymer as the middle elastic block.

[0031] The copper wire 101 is a type 5 annealed copper wire or a type 6 annealed copper wire, and the shape of the protrusion 4 is a semicircle.

[0032] The above-mentioned outer sheath layer 3 is obtained through the following steps:

[0033] Step 1. Add 25~40 parts of SEBS, 10~20 parts of styrene-based thermoplastic elastomer, 4~8 parts of polystyrene, 2~5 parts of hexamethylene diisocyanate, and 1~2 parts of ethyl thioglycolate into high-speed mixing In the extruder, ...

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Abstract

The invention discloses a preparation technology of a low-smoke and high temperature-resistant photovoltaic cable. The preparation technology comprises the following steps: adding SEBS, a styrenic thermoplastic elastomer, polystyrene, hexamethylene diisocyanate and ethyl thioglycolate into a high-speed mixer, mixing by stirring at a speed of 500-800rpm at 95-105 DEG C, and then putting 20-35 partsof an ethylene-vinyl acetate copolymer into a twin-screw extruder, then adding magnesium stearate, and performing extrusion granulation; adding ammonium tripolycyanamide phosphate, hydromagnesite, tripolycyanamide pyrophosphate, polyphenylene ether, hydroxyl silicone oil and prepared granules into a mixer for mixing to obtain a rubber compound. The bending-resistant halogen-free photovoltaic cable has the twisting performance as high as more than 200,000 times of U bending, can be twisted and bent by more than 100,000 times at 180 DEG C, has excellent high temperature resistance, reaches thetemperature-resistant rating of 125 DEG C, can pass 7-day aging at 158 DEG C, and has the mechanical property retention rate of 80% or above.

Description

technical field [0001] The invention relates to a photovoltaic cable, in particular to a preparation process of a low-smoke and high-temperature-resistant photovoltaic cable. Background technique [0002] Photovoltaic technology will become one of the green energy technologies in the future. People usually do not regard the wiring system connecting photovoltaic modules and inverters as a key component. However, not using special cables for photovoltaic applications will affect the use of the entire system life. [0003] Photovoltaic systems often work under harsh environmental conditions, such as high temperature and ultraviolet radiation. On sunny days, the site temperature of photovoltaic systems can reach as high as 100°C. At present, the various materials we can use are PVC, rubber, TPE and high-quality cross-link materials, however, rubber cables are rated at 90°C and PVC cables are rated at 70°C, and these cables will be severely damaged when used in photovoltaic syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L25/06C08L71/12C08L23/08C08K13/02C08K5/29C08K5/3492C08K5/20H01B13/24H01B7/18H01B7/29H01B7/295H01B3/30H01B3/44
CPCC08L23/0853C08L53/025C08L2201/02C08L2201/08C08L2203/202C08L2205/035H01B3/307H01B3/44H01B7/18H01B7/29H01B7/295H01B13/24C08L53/02C08L25/06C08L71/12C08K13/02C08K5/29C08K5/34928C08K5/20
Inventor 卜晓华崔久德魏三土安夏天
Owner WUXI XINHONGYE WIRE & CABLE
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