Photovoltaic cable sheath material and preparation method thereof

A sheath material, photovoltaic cable technology, applied in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of material mechanical properties, low temperature resistance and other performance degradation, and achieve good solubility and flow properties, high Insulation resistance, the effect of excellent flame retardancy

Active Publication Date: 2020-04-28
JIANGSU DASHENG POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photovoltaic cable improves the flame retardant performance of the material by increasing the amount of flame retardant, but increasing the amount of flame retardant will cause problems such as the decline of the material's mechanical properties and low temperature resistance.

Method used

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  • Photovoltaic cable sheath material and preparation method thereof
  • Photovoltaic cable sheath material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0053] This embodiment provides a photovoltaic cable sheath material, which comprises: hyperbranched polyethylene (branching degree is 100 branches / 1000C, number average molecular weight is 5×10 5 ) 40%, aluminum hydroxide (fineness of 1 μm) 42%, microcapsule red phosphorus (fineness of 5 μm) 7%, maleic anhydride grafted EVA (grafting rate of 3%, melt index of 6g / 10min, The weight percentage of EVA is 30%) 6%, calcium stearate 1%, zinc stearate 1%, silicone masterbatch 2% and γ-(2,3-epoxypropoxy) propyl trimethyl Oxysilane 1%.

[0054] The preparation method of the photovoltaic cable sheath material provided in this embodiment comprises the following steps:

[0055] (1) Hyperbranched polyethylene, aluminum hydroxide, microcapsule red phosphorus, maleic anhydride grafted EVA, calcium stearate, zinc stearate, silicone masterbatch and γ-(2,3- Glycidoxy)propyltrimethoxysilane is mixed, melt-blended at 160°C for 15 minutes using an internal mixer, and then made into granules thro...

Embodiment 2

[0058] This embodiment provides a photovoltaic cable sheath material, the photovoltaic cable sheath material comprises: hyperbranched polyethylene (branching degree is 130 branches / 1000C, number average molecular weight is 6×10 5 ) 20%, aluminum hydroxide (fineness is 2μm) 50%, microcapsule red phosphorus (fineness is 10μm) 10%, maleic anhydride grafted EVA (graft rate is 5%, melt index is 10g / 10min, The weight percent content of EVA is 40%) 10%, calcium laurate 3%, zinc laurate 1%, silicone masterbatch 3% and gamma-mercaptopropyl triethoxysilane 3%.

[0059] The preparation method of the photovoltaic cable sheath material provided in this embodiment comprises the following steps:

[0060] (1) Hyperbranched polyethylene, aluminum hydroxide, microcapsule red phosphorus, maleic anhydride grafted EVA, calcium laurate, zinc laurate, silicone masterbatch and γ-mercaptopropyltriethoxy After the silane is mixed, use an internal mixer to melt and blend at 175°C for 25 minutes, and th...

Embodiment 3

[0063] This embodiment provides a photovoltaic cable sheath material, which includes: hyperbranched polyethylene (branching degree is 110 branches / 1000C, number average molecular weight is 7×10 5 ) 40%, aluminum hydroxide (fineness is 1 μm) 40%, microcapsule red phosphorus (fineness is 10 μm) 5%, maleic anhydride grafted EVA (grafting rate is 4%, melt index is 5g / 10min, The weight percent content of EVA is 35%) 8%, calcium palmitate 3%, zinc palmitate 1%, silicone masterbatch 1% and gamma-aminoethylaminopropyl trimethoxysilane 2%.

[0064] The preparation method of the photovoltaic cable sheath material provided in this embodiment comprises the following steps:

[0065](1) Hyperbranched polyethylene, aluminum hydroxide, microcapsule red phosphorus, maleic anhydride grafted EVA, calcium palmitate, zinc palmitate, silicone masterbatch and γ-aminoethylaminopropyl trimethyl After the oxysilane is mixed, use an internal mixer to melt and blend at 170°C for 10 minutes, and then pas...

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Abstract

The invention provides a photovoltaic cable sheath material and a preparation method thereof. The photovoltaic cable sheath material comprises the following components in percentage by weight: 20-40%of hyperbranched polyethylene, 40-60% of a flame retardant, 5-10% of maleic anhydride grafted EVA, 1-5% of a stabilizing agent, 1-5% of silicone master batch and 1-5% of a silane coupling agent. The photovoltaic cable sheath material has extremely high insulation resistance, excellent flame retardance, good mechanical strength and smoke density light transmittance, can completely meet the performance requirements in the IEC62930 standard through single vertical combustion, and can be applied to the field of photovoltaic cables.

Description

technical field [0001] The invention belongs to the field of cable insulation materials, and in particular relates to a photovoltaic cable sheath material and a preparation method thereof. Background technique [0002] Cable is an important component of photovoltaic equipment. As the backbone of power transmission for solar photovoltaic power generation facilities, it is directly related to the safety, reliability and advancement of solar photovoltaic power generation systems. A large number of DC cables in photovoltaic power plants need to be laid outdoors, and the environmental conditions are harsh. During the installation and operation and maintenance of photovoltaic power plants, cables may be routed in the soil below the ground, among weeds and rocks, on the sharp edge of the roof structure, and exposed in the air. , the cable may withstand the impact of various external forces. If the cable sheath is not strong enough, the cable insulation will be damaged, affecting t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C08L83/04C08K13/06C08K9/10C08K3/02C08K3/22C08K5/098C08K5/5435C08K5/548C08K5/544H01B3/44
CPCC08L23/06H01B3/441C08L2203/202C08L2201/02C08L2201/08C08L2205/03C08K2003/026C08K2003/2227C08K2201/014C08L51/06C08L83/04C08K13/06C08K9/10C08K3/02C08K3/22C08K5/098C08K5/5435C08K5/548C08K5/544
Inventor 潘卫东范魏魏郑建
Owner JIANGSU DASHENG POLYMER
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