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A kind of epoxy conductive adhesive for shingled solar module and preparation method

A solar module, epoxy conductive adhesive technology, applied in epoxy resin glue, conductive adhesive, adhesive and other directions, can solve the problem of slow curing time, can not meet the fast curing of shingled components, etc., to reduce brittleness, high practicality Value, high adhesion effect

Active Publication Date: 2021-09-21
苏州瑞力博新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention adds silicone-modified acrylate to the acrylic system to overcome the problem that acrylate is easy to age, but the curing time of the overall system is relatively slow (it takes at least 10 minutes at 145°C to fully cure), which cannot meet the requirements of lamination. Rapid curing requirements in the production of tile components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of epoxy conductive rubber for the superimposed solar module is accurately weighed 300 g bisphenol A type epoxy resin, 50 grams of liquid polysulfide rubber and 30 grams of hydrogenated castor oil, at 0-30 ° C Under the conditions of the double planet stir mixed for 30 minutes, 600 grams of average particle diameter of 5 um was added to stir for 30 minutes, then 20 g of 2,4,6-triphenylfluoride tetrafluoride salt was added and stirred 5. Minutes, vacuum decking results in epoxy conductive adhesive for superimpolating solar components, specific characteristics as follows:

[0018] Viscosity: 183, 700MPa.s

[0019] Adhesive strength: 9MPa (bonding substrate is aluminum)

[0020] Density: 2.8 g / centimeter

[0021] Curing speed: 28 seconds (150 ° C)

[0022] Volume resistivity: 3.6 × 10 -4 Ω.cm

[0023] High temperature and high humidity (85 ° C, 85% RH, 1000 hours) Post-volume resistivity: 4.5 × 10 -4 Ω.cm

[0024] The curing speed and adhesive strength...

Embodiment 2

[0026] The preparation method of epoxy conductive rubber for the superimposed solar module is precisely weighed by 280 g of bisphenol F-type epoxy resin, 40 grams polyvinyl acetal and 30 g of cellulose, in 0- After stirring at 30 ° C, mixed with 620 g of a spherical silver powder of 620 g of an average particle diameter of 2 um for 30 minutes, then adding 40 g of 2,4,6-triphenylfluoride tetrafluoride salt to stir again. 5 minutes, vacuum decking is obtained from epoxy conductive adhesive for the superimposed solar module, the specific characteristics are as follows:

[0027] Viscosity: 95,900 MPa.s

[0028] Adhesive strength: 12MPa (bonding substrate is aluminum)

[0029] Density: 2.9 grams / cubic centimeter

[0030] Curing speed: 15 seconds (150 ° C)

[0031] Volume resistivity: 2.8 × 10 -4 Ω.cm

[0032] High temperature and high humidity (85 ° C, 85% RH, 1000 hours) Post-volume resistivity: 3.2 × 10 -4 Ω.cm

[0033] The curing speed and adhesive strength of the epoxy conductive...

Embodiment 3

[0035] The preparation method of epoxy conductive rubber for the superimposed solar module is accurately weighed by 160 grams of fatty epoxy resin, 26 g of ethylcellulose and 13 grams of gas-phase silica, at 0-30 ° C Under the conditions, the double planet was stirred for 30 minutes, and a sheet-like silver powder having an average particle diameter of 8 um was added to stir for 30 minutes, then 13 g 2, 4,6-triphenylpyranium tetrafluoride salt was added for further 5 minutes. , Vacuum decking is obtained from epoxy conductive adhesive for the superimposed solar module, the specific characteristics are as follows:

[0036] Viscosity: 164,600MPa.s

[0037] Bonding strength: 7MPa (bonding substrate is aluminum)

[0038] Density: 3.2 g / centimeter

[0039] Curing speed: 22 seconds (150 ° C)

[0040] Volume resistivity: 4.9 × 10 -4 Ω.cm

[0041] High temperature and high humidity (85 ° C, 85% RH, 1000 hours) post-volume resistivity: 5.8 × 10 -4 Ω.cm

[0042] The curing speed and adhes...

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Abstract

The invention relates to an epoxy conductive adhesive for shingled solar modules and a preparation method thereof, which is characterized in that the epoxy conductive adhesive involved in the invention includes: epoxy resin monomer, toughening resin, silver powder, rheological agent, and latent initiators for the curing of epoxy resin monomers. Its beneficial effect is: the innovative use of boron tetrafluoride latent curing agent to prepare epoxy conductive adhesive for shingled solar modules realizes rapid curing of epoxy conductive adhesive (curing within 20 seconds at 150 degrees), solves the problem of The fundamental problems such as slow curing speed and easy aging of epoxy conductive adhesive are solved. At the same time, the supplementary toughening epoxy resin effectively reduces the brittleness of the epoxy conductive adhesive, greatly reduces the cracks in the manufacturing process of the shingled components, and improves the yield of the shingled components.

Description

Technical field [0001] The present invention relates to the field of polymer conductive materials, and more particularly to an epoxy conductive rubber for superimposing solar modules and a preparation method thereof. Background technique [0002] With the advancement of photovoltaic technology and the intensification of market competition, China's photovoltaic industry began to enter the era of high-efficiency products. The superimposed parts technology as one of the mainstream high-efficiency component technology is currently widely concerned. The connection method of the conventional component battery is used, and there is a blank area of ​​2 to 3 mm between the panels, and the use of the assembly is increased, and the component conversion efficiency is reduced. The superimposed tile assembly uses a laser to redesign the battery sheet of the gate line into a reasonable graphic small piece, and a small sheet is bonded to the series plates to be compressed into a component. Thus,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/00C09J181/04C09J191/00C09J129/14C09J101/28C09J9/02C09J11/08C09J11/04C08G59/40
CPCC08G59/4078C08K2003/0806C08L2205/03C09J9/02C09J11/04C09J11/08C09J101/28C09J129/14C09J163/00C09J181/04C09J191/00C08L81/04C08L91/00C08L29/14C08L1/28C08L71/00C08K7/00C08K3/08C08K7/18C08K3/36C08K3/346
Inventor 孙玉海宋艳李宇婷
Owner 苏州瑞力博新材科技有限公司
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