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A kind of fast curing silicone sealant for photovoltaic modules and preparation method thereof

A silicone sealant and photovoltaic module technology, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of colloid curing speed, etc., and achieve the effect of excellent bonding strength

Active Publication Date: 2021-07-16
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Comparative analysis of the above patents did not elaborate on the colloid curing speed

Method used

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  • A kind of fast curing silicone sealant for photovoltaic modules and preparation method thereof
  • A kind of fast curing silicone sealant for photovoltaic modules and preparation method thereof
  • A kind of fast curing silicone sealant for photovoltaic modules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a quick-curing silicone sealant for photovoltaic modules, which comprises 100 parts of alkoxy-terminated polydimethylsiloxane, 5 parts of polydimethylsiloxane, and a reinforcing agent in parts by weight. 80 parts, 30 parts of flame retardant, 2 parts of thixotropic agent, 10 parts of crosslinking agent, 2 parts of coupling agent and 3 parts of the first catalyst, wherein the crosslinking agent is polyfunctional polysiloxane. The multifunctional polysiloxane structural formula is Where R is selected from -Si(OCH3 ) 3 , n is selected from 8.

[0029] The components for preparing the multifunctional polysiloxane include vinyl-terminated siloxane, hydrogen-terminated siloxane and a second catalyst, and the vinyl-terminated siloxane is The siloxane containing terminal hydrogen group is R-H, the mass ratio between the siloxane containing terminal hydrogen group and the siloxane containing vinyl terminal is 0.6:1, and the second catalyst is selected ...

Embodiment 2

[0043] The difference between the silicone sealant for fast-curing photovoltaic modules of Example 2 and Example 1 is: 10 parts of polydimethylsiloxane, 100 parts of reinforcing agent, 20 parts of flame retardant, and 4 parts of thixotropic agent , 6 parts of crosslinking agent, 4 parts of coupling agent and 4 parts of first catalyst, wherein the crosslinking agent is multifunctional polysiloxane. The multifunctional polysiloxane structural formula is where R is selected from -CH 2 -Si(OCH 3 ) 3 , n is selected from 10.

[0044] The components for preparing the multifunctional polysiloxane include vinyl-terminated siloxane, hydrogen-terminated siloxane and a second catalyst, and the vinyl-terminated siloxane is R- CH=CH 2 , the siloxane containing terminal hydrogen group is The mass ratio between the hydrogen-terminated siloxane and the vinyl-terminated siloxane is 0.5:1, and the second catalyst is selected from the platinum catalyst produced by Shanghai Xibao High-tec...

Embodiment 3

[0058] The difference between the silicone sealant for fast-curing photovoltaic modules of Example 3 and Example 1 is: 3 parts of polydimethylsiloxane, 90 parts of reinforcing agent, 10 parts of flame retardant, and 10 parts of thixotropic agent , 8 parts of crosslinking agent, 3 parts of coupling agent and 5 parts of the first catalyst, wherein the crosslinking agent is polyfunctional polysiloxane. The multifunctional polysiloxane structural formula is where R is selected from -CH 2 -Si(OC 2 h 5 ) 3 , n is selected from 3.

[0059] The components for preparing the multifunctional polysiloxane include vinyl-terminated siloxane, hydrogen-terminated siloxane and a second catalyst, and the vinyl-terminated siloxane is R- CH=CH 2 , the siloxane containing terminal hydrogen group is The mass ratio between the hydrogen-terminated siloxane and the vinyl-terminated siloxane is 2:1, and the second catalyst is selected from the platinum catalyst produced by Shanghai Xibao High-...

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Abstract

The invention relates to a quick-curing silicone sealant for photovoltaic modules and a preparation method thereof, which is prepared from the following components: alkoxy-terminated polydimethylsiloxane, polydimethylsiloxane , reinforcing agent, flame retardant, thixotropic agent, crosslinking agent, coupling agent and the first catalyst, wherein the crosslinking agent is polyfunctional polysiloxane, and the coupling agent in its structural formula is secondary amine silane coupling The coupling agent, the first catalyst is a chelating titanate catalyst. In the present invention, multifunctional polysiloxane is used as a crosslinking agent, compounded with a secondary amine silane coupling agent, a chelating titanate catalyst and a flame retardant, and can be used for various bonding materials and adhesives. Fast-curing and non-yellowing fast-curing silicone sealant for photovoltaic modules with excellent junction strength.

Description

technical field [0001] The invention relates to a quick-curing silicone sealant for photovoltaic modules and a preparation method thereof, belonging to the field of silicone sealants for photovoltaic modules. Background technique [0002] Solar photovoltaic glue refers to a sealant that absorbs moisture in the air and cures at room temperature. It can bond and seal various backplanes, aluminum alloy frames, and junction boxes to protect photovoltaics under various harsh conditions. components. Since the main raw material of silicone sealant is linear polysiloxane such as 107 glue, its main chain is mainly composed of Si—O—Si bonds, and the bond energy of Si—O—Si bonds is higher than that of ultraviolet rays. The crosslinking agent and the base polymer react to form a network structure, so silicone sealants have excellent adhesion, weather resistance and UV resistance compared to other types of sealants. Silicone sealants are also often used in Sealing of solar photovoltaic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/06C09J11/08
CPCC08K2003/2224C08K2003/2227C08K2003/265C08K2003/323C08K2003/387C08K2201/011C08L2205/035C09J11/04C09J11/06C09J11/08C09J183/04C08L83/04C08K9/04C08K3/26C08K9/06C08K3/36C08K3/22C08K3/38C08K5/34928C08K3/32
Inventor 李雪华林坤华吴吟
Owner GUANGZHOU JOINTAS CHEM