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Two-component silicone sealant for solar module resisting damp, heat and ageing and preparation method thereof

A solar module, silicone sealant technology, applied in chemical instruments and methods, adhesives, electrical components, etc., to achieve high room temperature strength, excellent moisture and heat aging resistance, and improve production efficiency.

Inactive Publication Date: 2013-03-20
SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the two-component silicone adhesive used for solar modules on the market has a strength retention rate of only about 60% after the double 85 test. Therefore, a two-component silicone for solar modules with better moisture and heat aging resistance is developed. Sealant is very necessary

Method used

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  • Two-component silicone sealant for solar module resisting damp, heat and ageing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 100 parts by weight of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 5000cps, 3 parts of methyl silicone oil with a viscosity of 20cps, 100 parts of active nano-calcium carbonate, and 50 parts of silicon micropowder into the stirring tank , control the stirring speed to 500 rpm, temperature at 50°C, vacuum degree at 0.09~0.10MPa, stir for 3 hours, cool and pack to obtain component A;

[0030] By weight, 50 parts of MDT silicone oil, 10 parts of terminal silyl polyether, 30 parts of MQ resin, 10 parts of methyl silicone oil, 10 parts of fumed silica, 0.5 parts of organobentonite, 10 parts of tetramethoxysilane, 5 parts Tetraethoxysilane, 20 parts of methyltrimethoxysilane, 15 parts of dimethyldimethoxysilane, 5 parts of bis(3-triethoxysilylpropyl)amine, 2 parts of dilauric acid Add octyltin into the stirred tank, control the stirring speed to 500 rpm, the temperature is not higher than 50°C, the vacuum degree is 0.09-0.10MPa, stir for 2 hours, cool and pac...

Embodiment 2

[0033] 100 parts by weight of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 20000cps, 10 parts of MDT silicone oil with a viscosity of 2000cps, 80 parts of active nano-calcium carbonate, 10 parts of mica powder, and 10 parts of precipitation method white Add carbon black into the stirred tank, control the stirring speed to 1200 rpm, the temperature to 100°C, the vacuum degree to 0.09~0.10MPa, stir for 2 hours, cool and pack to obtain component A;

[0034] By weight, 70 parts of methyl silicone oil, 20 parts of MQ resin, 10 parts of vinyl silicone oil, 20 parts of active nano-calcium carbonate, 5 parts of precipitated white carbon black, 10 parts of tetramethoxysilane, 5 parts of tetrapropoxy Silane, 10 parts Trimethoxysilane, 10 parts Diethyldiethoxysilane, 5 parts γ-Aminopropylmethyldiethoxysilane, 5 parts γ-Aminopropyltriethoxysilane, 5 parts Add γ-methacryloxytrimethoxysilane, 6 parts of γ-(2,3 glycidoxy) propyltrimethoxysilane, and 1 part of dibutyltin dilaurate i...

Embodiment 3

[0037]100 parts by weight of α, ω-dihydroxy polydimethylsiloxane with a viscosity of 50000cps, 20 parts of vinyl silicone oil with a viscosity of 500cps, 30 parts of active nano calcium carbonate, 5 parts of talcum powder, and 15 parts of fumed white Add carbon black into the stirred tank, control the stirring speed to 1000 rpm, the temperature to 50°C, the vacuum degree to 0.09-0.10MPa, stir for 1.5 hours, cool and separate to obtain component A;

[0038] By weight, 20 parts of methyl silicone oil, 60 parts of terminal silyl polyether, 20 parts of MQ resin, 20 parts of active nano-calcium carbonate, 10 parts of talcum powder, 5 parts of fumed white carbon black, 5 parts of mica powder, 0.5 parts Organobentonite, 10 parts tetramethoxysilane, 4 parts ethyltrimethoxysilane, 2 parts ethyltriethoxysilane, 2 parts vinyltrimethoxysilane, 2 parts vinyltriethoxysilane, 15 Parts of γ-methacryloxytrimethoxysilane, 5 parts of N-(β-aminoethyl)-γ-aminopropyl-methyldimethoxysilane, 10 parts...

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Abstract

The invention discloses two-component silicone sealant for a solar module resisting damp, heat and ageing and a preparation method thereof. The sealant consists of a component A and a component B, wherein the component A adopts polydimethylsiloxane as the major material; and the component B comprises dispersion mediums, fillers, cross linking agent, coupling agent and catalyst; the component A comprises the following components in parts by weight: 100 parts of a, omega-dihydroxy polydimethylsiloxane with viscosity of 5000-50000cps, 3 to 20 parts of plasticizer and 50 to 150 parts of fillers; the component B comprises the following components in parts by weight: 100 parts of dispersion mediums, 10 to 45 parts of fillers, 20 to 50 parts of cross linking agent, 5 to 40 parts of silane coupling agent and 0.5 to 2 parts of catalyst; and the ratio of the component A to the component B in parts by weight is 100: (10-20). The sealant has the advantages of fast deep curing, wide adhesion, high strength of normal temperature and excellent resistance to damp, heat and ageing; after ageing for 1000 hours under the double-85 condition, the strength retention rate can be up above 80%; and the sealant is suitable for machine gluing, can largely improve module productivity, and adapts to the requirements of solar module mass production.

Description

technical field [0001] The invention relates to a two-component silicone sealant for a solar module resistant to damp heat aging and a preparation method thereof, belonging to the field of polymer sealing materials. technical background [0002] Solar photovoltaic power generation has developed rapidly in the past ten years, and the production and assembly technology of solar cell components has also become increasingly mature. In terms of frame sealing of solar modules and structural bonding of junction boxes, one-component condensation silicone sealants are still the main ones. However, when using a one-component condensation type silicone sealant, the overall curing time is long, which greatly affects the production efficiency of the module and seriously restricts the further development of the solar module industry. [0003] At present, there have been reports of two-component silicone adhesives for solar modules: For example, the publication number CN101768421A "Tw...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J183/07C09J171/00C09J11/04C09J11/06C09K3/10H01L31/048
CPCY02E10/50
Inventor 俞青松王卫华潘仕荣廖江涛赵勇刚
Owner SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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