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Two-component casting glue for capsulation of solar photovoltaic module and preparation method thereof

A solar photovoltaic, two-component technology, used in photovoltaic power generation, chemical instruments and methods, adhesives, etc., can solve problems such as harsh environmental conditions, current damage to battery panels, safety accidents and subsequent problems that cannot be well resolved. , to achieve the process requirements and equipment is not harsh, the weather resistance and corrosion resistance are ideal, the effect of inhibiting water vapor transmission performance

Inactive Publication Date: 2012-06-27
江苏明昊新材料科技股份有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the voltage of each group of panels used in solar power generation technology is extremely low, in order to achieve a certain voltage and current, a junction box is bonded to the back of each panel through the principle of series boosting for wiring. In order to prevent solar cells from being blocked under strong light, some of them become loads with serious heating and damage due to lack of light, and the sudden increase of current caused by solar flares damages the panels or causes fires. Therefore, in solar cells The two poles of the output terminal of the module are connected in parallel with a bypass diode to discharge and ensure safety; at the same time, because the solar cell module is used outdoors and the environmental conditions are harsh, direct exposure to water vapor will shorten the service life of the crystal diode, which in turn will affect The useful life of the entire component
[0003] Chinese Patent Application No. 200710029834.5 introduces a self-catalyzed cross-linking silicone sealant and its preparation method. Its application field is limited to the bonding of car lights and light bulbs. It belongs to the electronic product industry and does not involve the application of solar cell power generation technology. The relevant heat conduction value data is not explained in the detection value of its technical index; another example is a kind of two-component silicone sealant for solar photovoltaic modules and its preparation method described in Chinese Patent Publication No. CN1011768421A. Two-component sealant for bonding and junction box bonding, but the patent did not mention the use of thermally conductive materials and related detection value data when describing
[0004] And precisely because the corresponding heat conduction requirements are not put forward for the sealant, the safety accidents caused by the incomplete function of the sealant and the follow-up problems cannot be solved well. Therefore, it is urgent to invent a device that can protect the bypass diode from water vapor , and at the same time have good heat dissipation and flame retardancy when the diode discharges to generate heat, and must also meet the needs of industrial production of junction boxes, with good self-leveling performance, fast surface drying speed, deep curing rate, excellent resistance Sealant with environmental performance is the main trend of current development

Method used

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  • Two-component casting glue for capsulation of solar photovoltaic module and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The steps of the preparation method of the two-component encapsulant for solar photovoltaic module encapsulation provided by the invention are as follows:

[0035] A) To prepare component A, 100 parts of α-ω-dihydroxypolydimethylsiloxane and 30 parts of dimethyl silicone oil are white powder with a particle size of 18-22nm and specific surface area ≥ 50m 2 80 parts of nano-alumina / g, 25 parts of flame-retardant fillers, namely active aluminum hydroxide and active magnesium hydroxide (50 parts in total) and 30 parts of nano-calcium carbonate treated with resin acid are added to the vacuum kneader and kneaded. The vacuum degree is controlled at -0.07MPa, the kneading temperature is 110°C, kneading and copolymerizing for 100min, and the A component is obtained;

[0036] B) To prepare component B, 100 parts of vinyl silicone oil, 20 parts of crosslinking agent methyltrimethoxysilane, coupling agent hexamethyldisiloxane and γ-[2,3-glycidyloxypropoxy ]Propyltrimethoxysilane...

Embodiment 2

[0039] A) To prepare component A, mix 110 parts of α-ω-dihydroxypolydimethylsiloxane, 40 parts of vinyl silicone oil, 90 parts of aluminum oxide, and flame retardant filler active hydrogen according to the weight ratio or number of parts Add 30 parts of alumina and 25 parts of active magnesium hydroxide to a total of 55 parts, add 40 parts of nano-calcium carbonate into a vacuum kneader, control the vacuum degree of the kneader at -0.08MPa, kneading temperature 120°C, and knead and copolymerize for 90 minutes to obtain component A ;

[0040] B) To prepare component B, 110 parts of vinyl silicone oil, 30 parts of crosslinking agent methyltrimethoxysilane, coupling agent γ-[2,3-glycidyloxy]propyltrimethoxysilane and 2.5 parts of γ-aminopropyltriethoxysilane compounded according to 1:1, 1 part of catalyst dibutyl tin diacetate, 1.5 parts of YL-II type colored slurry with black color and put into double planetary high-speed mixer In the process, the rotation speed is 400n / min and...

Embodiment 3

[0043] A. To prepare component A, mix 120 parts of α-ω-dihydroxypolydimethylsiloxane, 50 parts of methyl vinyl silicone oil, 100 parts of aluminum oxide, and hydrogen Add 56 parts of magnesium oxide and 50 parts of nano-calcium carbonate into a vacuum kneader. The vacuum degree of the kneader is controlled at -0.06MPa, the kneading temperature is 115°C, and kneading and copolymerization is carried out for 105 minutes to obtain component A;

[0044] B. To prepare component B, 120 parts of vinyl silicone oil, 25 parts of crosslinking agent methyltrimethoxysilane, and 2.6 parts of coupling agent γ-[2,3-glycidoxy]propyltrimethoxysilane , 0.7 parts of catalyst dibutyl tin diacetate, 1.2 parts of YL-II-A type gray colored slurry are put into the double planetary high-speed mixer, the rotation speed is 550n / min, the revolution speed is 40n / min, blending and stirring 60min, get B component. All the other are the same as the description to embodiment 1.

[0045] In actual use, compon...

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Abstract

The invention provides a two-component casting glue for capsulation of a solar photovoltaic module, which belongs to the field of high polymer sealing materials. The two-component casting glue comprises component A and component B; component A comprises the following raw materials of 100 to 120 parts by weight of alpha-omega-dihydroxy polydimethylsiloxane, 30 to 50 parts by weight of silicone oil, 80 to 100 parts by weight of a heat conducting filling material, 50 to 60 parts by weight of a flame retardant filling material and 30 to 50 parts by weight of nanometer calcium carbonate; and component B comprises the following raw materials of 100 to 120 parts by weight of silicone oil, 20 to 40 parts by weight of a cross-linking agent, 2 to 3 parts by weight of a coupling agent, 0.5 to 1 part by weight of a catalyst and 1 to 1.5 parts by weight of colored slurry. The two-component casting glue has the advantages of effectively promoted flame resistance, a substantially improved heat conducting effect, capacity of timely and effectively conducting out heat emitted by a bypass diode, excellent performance in inhibiting permeability of water vapor, excellent electrical properties and ideal weatherability and corrosion resistance. A recommended preparation method for the two-component casting glue is simple and terse and does not have strict requirements on a process and equipment.

Description

technical field [0001] The invention belongs to the field of polymer sealing materials, in particular to a two-component potting glue for solar photovoltaic module packaging, and also relates to a preparation method thereof. technical background [0002] With the vigorous development of the new energy industry, the promotion and popularization of new energy sources such as solar energy, wind energy, and bioenergy has become the primary development task of governments of various countries, and has even been raised to a strategic level. Among the new energy applications, the fastest and most influential one is solar power generation technology, whose technology maturity and development speed are far ahead of other new energy sources. Since the voltage of each group of panels used in solar power generation technology is extremely low, in order to achieve a certain voltage and current, a junction box is bonded to the back of each panel through the principle of series boosting fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/07C09J183/04C09J11/04C09K3/10H01L31/048
CPCY02E10/50
Inventor 韩仁明王益昌费志刚
Owner 江苏明昊新材料科技股份有限公司
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