A low modulus high volume resistivity silicone structural adhesive

A high volume resistivity, structural adhesive technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of silicone structural adhesives without photovoltaic modules, etc., to reduce free ammonia ions , reduced dosage, low modulus volume resistivity effect

Active Publication Date: 2020-06-16
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are no domestic reports on silicone structural adhesives for photovoltaic modules, especially patent reports on special structural adhesives used in high-voltage systems of 1500V and above

Method used

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  • A low modulus high volume resistivity silicone structural adhesive
  • A low modulus high volume resistivity silicone structural adhesive
  • A low modulus high volume resistivity silicone structural adhesive

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: 80 parts by weight of filler, the mass ratio of calcium carbonate to fumed silica is 15:1, wherein the particle size of calcium carbonate is 15nm, and the treating agent of fumed silica is octamethylcyclotetrasiloxane, The specific surface area is 150m 2 / g. 50 parts by weight of 20,000 cs-terminated hydroxyl polydimethylsiloxane (abbreviated as 107 glue, hereinafter referred to as abbreviation), 50 ...

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: 90 parts by weight of filler, the mass ratio of calcium carbonate to fumed silica is 14:1, wherein the particle size of calcium carbonate is 40nm, and the treating agent of fumed silica is hexamethyldisilazane, the ratio Surface area is 150m 2 / g. Add 40 parts by weight of 20,000 cs 107 glue, 60 parts by weight of 80,000 cs 107 glue, 20 parts by weight of 80 cs termi...

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: 70 parts by weight of filler, the mass ratio of calcium carbonate to fumed silica is 13:1, wherein the particle size of calcium carbonate is 20nm, the treating agent of fumed silica is dimethyldichlorosilane, and the specific surface area 180m 2 / g. Add 30 parts by weight of 20,000 cs 107 glue, 70 parts by weight of 80,000 cs 107 glue, 5 parts by weight of 70 c...

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Abstract

The invention discloses a structural silicone adhesive with low modulus and high volume resistivity. The structural silicone adhesive is composed of a component A and a component B according to a volume ratio of 10: 1, wherein the component A is composed of hydroxyl-terminated polymethylsiloxane, a plasticizer and a reinforcing filling material; and the component B is composed of methyl-terminatedpolydimethylsiloxane, pigment carbon black, a silane coupling agent, a chain extender, an active hydrogen sealing agent, a cross-linking agent, a catalyst, an antioxidant, a light stabilizer and a deep curing agent. The structural silicone adhesive with low modulus and high volume resistivity provided by the invention improves the volume resistivity of a conventional structural adhesive from 1015omega.cm to 1016 omega.cm, increases an order of magnitude in the volume resistivity, is applicable to structural assembly of a system with photovoltaic voltage classes of 1500 V, 2000 V and even 3000 V, specifically to structural adhesion assembly of places with high requirements on insulation, such as thin film assemblies, and exerts an effect of structural adhesion.

Description

technical field [0001] The invention relates to a silicone structural adhesive, especially a method for preparing a low-modulus, high-volume-resistivity silicone structural adhesive, which is used in occasions requiring high insulation, such as photovoltaic 1500V voltage systems and structures for thin-film components Glue etc. Background technique [0002] At present, the mainstream photovoltaic modules and supporting components in the photovoltaic industry are generally designed based on the system voltage of 1000V at the DC terminal. If the system voltage of the modules is increased to 1500V, 2000V or even 3000V, cables, combiner boxes and safety devices can be greatly reduced It can improve the power conversion efficiency of the photovoltaic inverter and reduce the resistance loss, thereby significantly reducing the installation cost of the terminal power station, and has obvious advantages when assembling large-scale power stations. [0003] At present, the design of m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/04C09J11/06C09J11/08C08G77/26C08G77/38
CPCC08G77/26C08G77/38C09J4/06C09J11/04C09J11/06C09J11/08
Inventor 高传花刘正伟江昊韩志远王林张利安林天翼周光大
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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