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Moisture and heat resistant high-strength silicone structural adhesive for photovoltaic modules

A photovoltaic module, heat and humidity resistance technology, applied in adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc. Poor weather resistance and other problems, to achieve excellent UV resistance, fast curing speed, and improve the strength of the effect

Active Publication Date: 2020-11-03
ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of the briquette installation are: easy installation, easy replacement of components, not easy to accumulate dust, and easy to clean; the disadvantages are: the rubber pad is easy to age, and the components may slide; the components have poor mechanical performance, and the uneven force of the briquetting blocks will cause Component cracks
The advantages of the back hook installation are: easy to install, easy to replace components, not easy to accumulate dust, and easy to clean.
In the published patent CN105255439A, a high-elongation two-component silicone structural adhesive and its preparation method, it is reported that benzotriazole UV stabilizers are used to improve the outdoor service life of structural adhesives, but no UV stabilizers and antioxidants are used. Combined use, the weather resistance will be compromised, and the patent does not involve improving the heat and humidity resistance of the silicone structural adhesive; the published patent CN104497961B is a nano-zirconium silicone structural adhesive and its preparation method, mainly by adding nano-zirconium powder to prepare a A waterproof, non-cracking silicone glue, does not involve moisture and heat resistant silicone glue

Method used

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  • Moisture and heat resistant high-strength silicone structural adhesive for photovoltaic modules
  • Moisture and heat resistant high-strength silicone structural adhesive for photovoltaic modules
  • Moisture and heat resistant high-strength silicone structural adhesive for photovoltaic modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of composite coupling agent: 1mol of aminopropyltrimethoxysilane, 1mol of aminopropyltriethoxysilane, 1mol of bis(trimethoxysilylpropyl)amine, 2-(3,4-epoxy ring Hexyl)ethyltrimethoxysilane 2mol, 3-(2,3-epoxypropoxy)propyltrimethoxysilane 4mol, according to the moles of silane coupling agent with amino group and silane coupling agent with epoxy group After mixing evenly at a ratio of 1:2, seal it, heat it in an oven at 70°C for 3 hours, and then cool it to room temperature to prepare a composite coupling agent for future use.

[0029] Preparation of component A: 30 parts by weight of 10,000 cs α, ω-dihydroxy polydimethylsiloxane (107 glue, referred to as hereinafter) , 70 parts by weight of 80,000 cs 107 glue, thixotropic agent alkoxylated 0.5 parts by weight of terminal polyether, 110 parts by weight of nano-calcium carbonate filler processed by fatty acid, 1 part by weight of triallyl isocyanurate, 30 parts by weight of 350cs simethicone plasticizer are add...

Embodiment 2

[0033] Preparation of composite coupling agent: 1 mol of aminopropyltrimethoxysilane, 1mol of aminopropyltriethoxysilane, 1mol of bis(trimethoxysilylpropyl)amine, 1mol of triethoxysilylpropyl Amine 1mol, 3-(2,3-epoxypropoxy)propyltriethoxysilane 4mol, 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane 8mol, according to the amino group The silane coupling agent and the silane coupling agent with epoxy group were mixed evenly in a molar ratio of 1:3, sealed, heated in an oven at 80°C for 2.5 hours, and then cooled to room temperature to prepare a composite coupling agent for use.

[0034] Preparation of component A: 20 parts by weight of 10,000 cs α, ω-dihydroxy polydimethylsiloxane (107 glue, referred to as hereinafter) , 50 parts by weight of 20,000 cs 107 glue, 30 parts by weight of 80,000 cs 107 glue , 2 weight parts of thixotropic agent fumed silicon dioxide, 90 weight parts of nano-calcium carbonate fillers handled by stearic acid, 10 weight parts of methylphenyl silicone re...

Embodiment 3

[0038] Preparation of composite coupling agent: 1mol of aminopropyltrimethoxysilane, 2mol of aminoethylaminopropylpropyltrimethoxysilane, 1.5mol of triethoxysilylethane, bis(trimethoxysilyl Propyl)amine 3mol and 3-(2,3-epoxypropoxy)propylmethyldimethoxysilane 10mol, 3-(2,3-epoxypropoxy)propylmethyldiethoxysilane 5mol, according to the molar ratio of silane coupling agent with amino group and silane coupling agent with epoxy group 1:2, after mixing evenly, airtight, heat in an oven at 90°C for 2h, then cool to room temperature, and prepare a composite coupling agent for later use .

[0039] Preparation of component A: 30 parts by weight of 10,000 cs α, ω-dihydroxy polydimethylsiloxane (107 glue, referred to as hereinafter) , 50 parts by weight of 20,000 cs 107 glue, 20 parts by weight of 80,000 cs 107 glue 1 weight part of thixotropic agent polyether, 100 parts by weight of nano-calcium carbonate filler processed by rosin, 15 parts by weight of methyl MQ silicone resin, 20 par...

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Abstract

The invention discloses a moisture-resistant and heat-resistant high-strength silicone structural adhesive special for photovoltaic assemblies. The moisture-resistant and heat-resistant high-strengthsilicone structural adhesive special for the photovoltaic assemblies consists of an A component and a B component according to a volume ratio of 10:1, wherein the A component consists of hydroxyl-terminated polydimethylsiloxane, a thixotropic agent, a reinforcing filler, a heat-resistant filler and a plasticizer; and the B component consists of methyl-terminated polydimethylsiloxane, pigment carbon black, a silane coupling agent, an active hydrogen blocking agent, a crosslinker , a catalyst, an antioxidant, a light stabilizer, and a deep curing agent. According to the moisture-resistant and heat-resistant high-strength silicone structural adhesive special for the photovoltaic assemblies, the problem that currently strength of a silicone structural adhesive decreases after damp-heat aging is solved; and the moisture-resistant and heat-resistant high-strength silicone structural adhesive special for the photovoltaic assemblies is applicable to the fields of structural bonding of double glass assembly back tracks, and between hanging buckles and glass, and bonding and sealing of photovoltaic assembly frames, and junction boxes, etc.; and the structural adhesive has high strength, excellent heat and humidity resistance and adhesion, and can play a structural adhesive role.

Description

technical field [0001] The invention relates to a silicone structural adhesive, in particular to a heat-resistant and high-strength silicone structural adhesive for photovoltaic modules, which plays a structural bonding role for double-glass module glass and back hooks, and is applied to photovoltaic module frames and wiring It has high strength, excellent heat and humidity resistance and adhesiveness in fields such as box bonding and sealing. Background technique [0002] With the increasing demand in the photovoltaic power generation market, customers have higher and higher demands on the quality and reliability of photovoltaic products and low LCOE. The double-glass module launched by the industry in 2014 is known as "the ultimate solution for module packaging" and is well received by the industry. highly anticipated. Almost all component factories have launched double-glass modules, and have accumulated large-capacity installations. But the frameless structure also put...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/04C09J11/06
CPCC09J4/06C09J11/04C09J11/06
Inventor 高传花刘正伟韩志远王林林天翼周光大
Owner ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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