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Irradiation cross-linking low-smoke halogen-free sheath material for photovoltaic cable, and preparation method thereof

A low-smoke halogen-free sheathed, photovoltaic cable technology, applied in circuits, electrical components, plastic/resin/wax insulators, etc. Poor performance, short service life and other problems, to achieve the effect of reducing high crystallinity, improving light transmittance, and improving mechanical properties

Inactive Publication Date: 2020-04-14
NEW FAR EAST CABLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the irradiation cross-linked low-smoke halogen-free flame-retardant polyolefin cable material overcomes the harm to the environment and the human body caused by the traditional halogen-based flame retardant flame-retardant polyolefin material, and has the characteristics of non-toxic and green environmental protection, it is prepared from The tensile strength, elongation at break and other mechanical properties of the sheath material are still relatively poor, and its heat aging resistance is also relatively poor, especially the service life under high temperature conditions is short

Method used

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  • Irradiation cross-linking low-smoke halogen-free sheath material for photovoltaic cable, and preparation method thereof
  • Irradiation cross-linking low-smoke halogen-free sheath material for photovoltaic cable, and preparation method thereof
  • Irradiation cross-linking low-smoke halogen-free sheath material for photovoltaic cable, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh each component, take by weight and control the properties of each component to meet:

[0036] 20 parts of ethylene-vinyl acetate copolymer, vinyl acetate content 28%, melt index (190°C, 2.16kg) 6g / 10min, ethylene-vinyl acetate copolymer can effectively reduce high crystallinity, improve flexibility and impact resistance compatibility, filler compatibility and heat-sealing properties, ensuring good mechanical properties and processing properties of the sheath;

[0037]10 parts of EPDM rubber, Mooney viscosity (ML1+4, 125°C) 70, ethylene content 50%, the third monomer is ethylidene-norbornene, content 5%, EPDM rubber has oxidation resistance, The anti-ozone and anti-erosion properties make the sheath have good chemical properties and prolong the service life;

[0038] 8 parts of high-density polyethylene, density 0.948g / cm3, melt index (190°C, 2.16kg) 5-10g / 10min, has good mechanical properties, anti-seepage performance, heat resistance and sunlight aging resistanc...

Embodiment 2

[0054] Weigh each component, take by weight and control the properties of each component to meet:

[0055] 18 parts of ethylene-vinyl acetate copolymer, vinyl acetate content 26%, melt index (190°C, 2.16kg) 3g / 10min;

[0056] 12 parts of EPDM rubber, Mooney viscosity (ML1+4, 125°C) 70, ethylene content 50%, the third monomer is ethylidene-norbornene, content 5%;

[0057] 7 parts of high-density polyethylene, density 0.948g / cm3, melt index (190°C, 2.16kg) 6g / 10min;

[0058] Silane coupling agent surface modified aluminum hydroxide 20 parts, mesh number 8000 mesh;

[0059] Silane coupling agent surface modified magnesium hydroxide 25 parts, mesh number 8000 mesh;

[0060] 5 parts of aluminum diethyl hypophosphite, particle size D50≤10μm, decomposition temperature (TGA thermal weight loss 1%): >320°C;

[0061] 2.5 parts of maleic anhydride grafted polyethylene, the grafting rate is 1%;

[0062] 1.5 parts of trimethylolpropane triacrylate;

[0063] Tetrakis[β-(3,5-di-tert-but...

Embodiment 3

[0072] Weigh each component, take by weight and control the properties of each component to meet:

[0073] 15 parts of ethylene-vinyl acetate copolymer, vinyl acetate content 28%, melt index (190°C, 2.16kg) 6g / 10min;

[0074] 15 parts of EPDM rubber, Mooney viscosity (ML1+4, 125°C) 70, ethylene content 50%, the third monomer is ethylidene-norbornene, content 5%;

[0075] 9 parts of high-density polyethylene, density 0.948g / cm3, melt index (190°C, 2.16kg) 8g / 10min;

[0076] 18 parts of silane coupling agent surface modified aluminum hydroxide, mesh number 8000 mesh;

[0077] Silane coupling agent surface modified magnesium hydroxide 25 parts, mesh number 8000 mesh;

[0078] 7 parts of aluminum diethyl hypophosphite, particle size D50≤10μm, decomposition temperature (TGA thermal weight loss 1%): >320°C;

[0079] 2 parts of maleic anhydride grafted polyethylene, the grafting rate is 1%;

[0080] 1.5 parts of trimethylolpropane triacrylate;

[0081] 4,4'-thiobis(6-tert-butyl-...

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Abstract

The invention discloses an irradiation cross-linking low-smoke halogen-free sheath material for a photovoltaic cable, wherein the irradiation cross-linking low-smoke halogen-free sheath material comprises the following components in parts by mass: 10-30 parts of an ethylene-vinyl acetate copolymer, 5-20 parts of ethylene propylene diene monomer, 5-20 parts of high-density polyethylene, 5-30 partsof aluminum hydroxide, 5-35 parts of magnesium hydroxide, 1-10 parts of diethyl aluminum hypophosphite, 1-5 parts of a compatilizer, 0.5-3 parts of a cross-linking sensitizer, 0.5-2 parts of an antioxidant, 1-5 parts of a lubricant and 2-5 parts of carbon black. By adding the components according to the specific ratio, the sheath material ensures good mechanical properties and good processabilitywhile prolonging the service life and enhancing the light transmittance and the flame retardancy in smoke.

Description

technical field [0001] The invention relates to the technical field of cable sheaths, in particular to an irradiation crosslinked low-smoke halogen-free sheath material for photovoltaic cables and a preparation method thereof. Background technique [0002] Since photovoltaic cables are often used under harsh environmental conditions, such as high and low temperature, strong ultraviolet radiation, high ozone concentration, chemical corrosion, etc., in some places, the on-site temperature of the solar system can be as high as 100°C on sunny days. If the cable material does not meet the requirements, it will cause the cable to be fragile and even decompose the cable sheath layer. All these situations will directly increase the loss of the cable system, and at the same time, the risk of cable short circuit will also increase. In the medium and long term, fire or There is also a higher potential for personal injury, so high-performance materials must be used for photovoltaic cabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/16C08L23/06C08L51/06C08L83/04C08K13/06C08K9/06C08K3/22C08K3/04C08K5/5313H01B3/44
CPCC08L23/0853H01B3/441C08L2312/06C08L2203/202C08L2201/22C08L2201/02C08L2201/08C08L2205/08C08L2207/062C08L2205/025C08L2205/035C08K2201/003C08K2003/2227C08K2003/2224C08L23/16C08L23/06C08L51/06C08L83/04C08K13/06C08K9/06C08K3/22C08K3/04C08K5/5313
Inventor 邹存洋徐静陈静王成曾泽华王射林
Owner NEW FAR EAST CABLE
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