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Preparation method of photovoltaic cable sheath layer material

A sheath layer and cable technology, which is applied in the field of preparation of photovoltaic cable sheath materials, can solve the problems of insufficient plasticization of raw materials, low crosslinking efficiency, etc., and achieve the effect of improving work efficiency and reducing costs

Active Publication Date: 2015-11-11
JIANGSU DASHENG POLYMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a method for preparing a photovoltaic cable sheath material, which solves the problems of insufficient plasticization of raw materials and low crosslinking efficiency in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for preparing a photovoltaic cable sheath material, comprising:

[0035] S1, prepare raw materials:

[0036] Ternary ethylene propylene rubber (EPDM): 10 parts, the mass ratio of ethylene propylene in this tertiary ethylene propylene rubber (EPDM) is 70 / 30, the third monomer ethylidenebornene content 1-3% (weight), The molecular weight is 50,000-150,000, the Mooney viscosity (100°C) is 30-70, and the hardness is Shore A20-50;

[0037] 20 parts of low-density polyethylene (LDPE);

[0038] 15 parts of ethylene-vinyl acetate copolymer (EVA), its vinyl acetate mass percentage composition is 28%;

[0039] 45 parts of silane coupling agent surface-modified aluminum hydroxide, mesh number 6000 mesh;

[0040] 1 part of crosslinking agent;

[0041] EVA grafted with maleic anhydride, the graft ratio is 1.5% and 8 parts;

[0042] 3 parts of tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester and

[0043] Silicone powder 2 parts. Wherein...

Embodiment 2

[0048] A method for preparing a photovoltaic cable sheath material, comprising:

[0049] S1, prepare raw materials:

[0050] Ternary ethylene propylene rubber (EPDM): 15 parts, the mass ratio of ethylene propylene in this tertiary ethylene propylene rubber (EPDM) is 60 / 40, the third monomer ethylidenebornene content 1-3% (weight), The molecular weight is 50,000-150,000, the Mooney viscosity (100°C) is 30-70, and the hardness is Shore A20-50;

[0051] 15 parts of low-density polyethylene (LDPE), 10 parts of ethylene-vinyl acetate copolymer (EVA), 50 parts of aluminum hydroxide, 5 parts of maleic anhydride grafted EVA, 6 parts of compatibilizer, 2 parts of antioxidant and silicon 3 servings of ketone powder. Wherein the weight ratio of silicone oil in the silicone powder to silicon dioxide is 3:2.

[0052] S2, putting the above-mentioned raw materials into a banbury mixer for banburying, and pressing down the weight for banburying; the specific steps of banburying are as foll...

Embodiment 3

[0056] A method for preparing a photovoltaic cable sheath material, comprising:

[0057] S1, prepare raw materials:

[0058] Ternary ethylene propylene rubber (EPDM): 20 parts, the mass ratio of ethylene propylene in this tertiary ethylene propylene rubber (EPDM) is 65 / 35, the third monomer ethylidenebornene content 1-3% (weight), The molecular weight is 50,000-150,000, the Mooney viscosity (100°C) is 30-70, and the hardness is Shore A20-50;

[0059] 10 parts of low-density polyethylene (LDPE), 20 parts of ethylene-vinyl acetate copolymer (EVA), 40 parts of aluminum hydroxide, 7 parts of maleic anhydride grafted EVA, 4 parts of compatibilizer, 1 part of antioxidant and silicon Ketone powder 1 part. Wherein the weight ratio of silicone oil in the silicone powder to silicon dioxide is 3:2.

[0060] S2, putting the above-mentioned raw materials into a banbury mixer for banburying, and pressing down the weight for banburying; the specific steps of the banburying are as follows:...

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Abstract

The invention provides a preparation method of a photovoltaic cable sheath layer material. The method comprises the steps that raw materials are put into an internal mixer to be subjected to internal mixing, fusion and blending, plasticized raw materials are obtained, the internal mixing temperature is 160-175 DEG C, and the internal mixing time is 15-25 min; the plasticized raw materials are added into a double-shaft feeder and are pelletized through a single screw extruder, and a sizing material is obtained; and the sizing material is extruded through a wire extruder and then irradiated through an electron accelerator, and the photovoltaic cable sheath layer material is obtained. Internal mixing is conducted in the internal mixer, so that the raw materials are evenly stirred and more sufficiently plasticized; but, in the prior art, the plasticizing is conducted in double screws and is not thorough. The electron accelerator irradiation is used for modification, so that the photovoltaic cable sheath layer material is more resistant to heat, aging and oil, and a thermoset polymer alloy is formed and does not contain any halogen or phosphorus and nitrogen element. The preparation method of the photovoltaic cable sheath layer material is completely environmentally friendly, reduces the cost and improves the working efficiency.

Description

technical field [0001] The invention relates to the technical field of preparation of a sheath layer material, in particular to a preparation method of a photovoltaic cable sheath layer material. Background technique [0002] As people's awareness of environmental protection and safety increases, the requirements for cable sheath materials are getting higher and higher. In the existing preparation process, single-screw banburying is generally used. Such insufficient mixing makes it difficult for the raw materials to be fully plasticized, which affects the performance of the prepared sheath layer material. Vulcanization or other chemical cross-linking is generally used in the subsequent process. This cross-linking method requires steam, and steam is produced by burning coal. Coal burning is not environmentally friendly, and it takes a long time, which greatly increases the cost and improves work efficiency. Greatly reduced. [0003] In view of this, it is necessary to devel...

Claims

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Application Information

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IPC IPC(8): B29B7/06B29B9/06B29C47/02C08L23/16C08L23/06C08L23/08C08K13/02C08K3/22C08K5/134C08K3/36
Inventor 范伟伟罗超华
Owner JIANGSU DASHENG POLYMER
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