Photovoltaic cable and manufacturing method and application thereof

Abstract

The invention discloses a photovoltaic cable and a manufacturing method and application thereof. The photovoltaic cable comprises an insulating layer and a jacket layer; the insulating layer comprises the following components: EVA (ethylene-vinyl acetate copolymer), LLDPE (linear low density polyethylene), EMA (ethylene-methyl acrylate), EVA-g-MAH (ethylene-vinyl acetate copolymer grafted maleic anhydride), magnesium hydrate, organic montmorillonoid, a cross-linked sensitizing agent, a lubricating agent, an antioxidant, a light stabilizer and a copper resisting agent; and the jacket comprisesthe following components: EVA, LLDPE, EMA, EVA-g-MAH, color masterbatch, magnesium hydrate, a phosphor series fire retardant, melamine chlorinated isocyanurates, zinc borate, a cross-linked sensitizing agent, a lubricating agent, an antioxidant, a light stabilizer and a copper resisting agent. According to the invention, the photovoltaic cable is manufactured by extruding insulating layer aggregates and jacket layer aggregates on a cable double-layer co-extrusion machine, wrapping the aggregates on the outer surface of a conductor in sequence and carrying out forming, air cooling, coiling andirradiation. The manufacturing method disclosed by the invention has the advantages of good machining property, favorable machining property and low cost and is suitable for industrial production; and the manufactured photovoltaic cable is environment-friendly and has excellent mechanical property, flame radiation resistance performance, thermal ageing property and weather fastness.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a photovoltaic cable and its preparation method and application. Background technique [0002] Since 2003, the annual growth rate of my country's photovoltaic industry has exceeded 30%, becoming the world's largest producer of photovoltaic cell components, but more than 90% of the products are sold abroad. Since 2006, my country has implemented the "Renewable Energy Law of the People's Republic of China". The national ministries and commissions and local governments have successively introduced measures such as financial subsidies and scientific and technological support to promote the growth of the photovoltaic industry and photovoltaic application market. The industry continues to overcome key materials and Key technologies to reduce photovoltaic manufacturing costs, my country is bound to become a photovoltaic power generation power. By 2020, the installed capacity of photov...

AI Technical Summary

Problems solved by technology

[0006] The existing technology of photovoltaic cables often has problems and deficiencies such as complex production process, high cost, cable flame retardancy and weather resistance can not meet the requirements of the standard: for example, the authorized announcement number is CN101295562B, and the name is "cable manufacturing method for solar photovoltaic power generation equipment". The cable provided by the national invention patent of "isolating layer wrapped, insulating layer extruded, insulating layer irradiated and cross-linked, outer sheath extruded, and outer sheath irradiated and cross-linked. The production process must be extruded twice. The production process is complicated and the cost is high; the invention patent with the publication number CN101845174A and the name "solar photovoltaic cable sheath material and cable" provides the sheath material as thermoplastic elastomer, ethylene-vinyl acetate Copolymer, nano-scale magnesium hydroxide, zinc borate, silicone modifier, compatibilizer, silane, antioxidant 1010 and copper ion dissociation agent, have obtained high and low temperature resistant, oil resistant cables, but can not meet the weather resistance / Requirements for UV resistance

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