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Single-component bonding sealing type silicone adhesive for solar battery assembly

A solar cell, bonding and sealing technology, which is applied in the field of sealants, can solve the problems of deketoxime odor and poor water vapor barrier effect, and achieve the effects of preventing cracking, promoting rapid curing, and excellent weather resistance

Inactive Publication Date: 2012-10-24
上海拓引数码技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the dealcoholized sealant, the deketoxime type sealant has a simpler production process, better storage stability and faster vulcanization speed, so the existing technology is generally based on the deketoxime type, but Oxime has a peculiar smell, and the water vapor barrier effect is not very good. Therefore, a ketoxime with better barrier to water vapor penetration and removal can be developed, and it has better storage stability, faster surface drying and Deep curing one-component deketoxime type silicone sealant to meet the requirements of solar photovoltaic module applications

Method used

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  • Single-component bonding sealing type silicone adhesive for solar battery assembly
  • Single-component bonding sealing type silicone adhesive for solar battery assembly
  • Single-component bonding sealing type silicone adhesive for solar battery assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Implementation Example 1: Dehydrate 100 parts of castor oil at 110°C for 2 hours, add 5.5 parts of hexamethylene diisocyanate into a reactor equipped with a stirrer, a condenser of a drying tube, a nitrogen inlet tube and a thermometer after cooling , raise the temperature to 65~80°C under stirring with nitrogen gas, and stop when the NCO (isocyanate group) value reaches the predetermined range (those skilled in the art can clearly define the specific value of this range, and obtain it by chemical titration). The reaction is to obtain NCO group-terminated polyurethane prepolymer. Then, 1.75 parts of N-phenyl-γ-aminopropyltrimethoxysilane end-capping agent was added dropwise to the system. After the reaction was complete, SPU-1 was obtained, which was sealed and stored for future use.

Embodiment 2

[0030] Implementation Example 2: 100 parts of castor oil was dehydrated at 110°C for 2 hours, and after cooling, 5.5 parts of hexamethylene diisocyanate were added to a reactor equipped with a stirrer, a condenser of a drying tube, a nitrogen gas inlet tube and a thermometer , the temperature is raised to 65~80°C under nitrogen gas stirring, and the reaction is stopped when the NCO value reaches the predetermined range to obtain the NCO group-terminated polyurethane prepolymer. Then, 1.75 parts of γ-mercaptopropyltrimethoxysilane end-capping agent was added dropwise to the system. After the reaction was complete, SPU-2 was obtained, which was sealed and stored for future use.

Embodiment 3

[0031]Implementation Example 3: 100 parts of castor oil was dehydrated at 110°C for 2 hours, and after cooling, 5.5 parts of hexamethylene diisocyanate were added to a reactor equipped with a stirrer, a condenser of a drying tube, a nitrogen gas introduction tube and a thermometer , the temperature is raised to 65~80°C under nitrogen gas stirring, and the reaction is stopped when the NCO value reaches the predetermined range to obtain the NCO group-terminated polyurethane prepolymer. Then, 1.75 parts of γ-ureidopropyltrimethoxysilane capping agent was added dropwise to the system. After the reaction was complete, SPU-3 was sealed and stored for later use.

[0032] It can be seen from the above-mentioned Examples 1-3 that the partially silylated polyurethane resin is a polyurethane prepolymer partially blocked by various silane-blocking agents, and its synthetic raw materials mainly include flexible long-chain fatty polyols (such as castor oil ), diisocyanates (such as hexameth...

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Abstract

The invention provides a single-component bonding sealing type silicone adhesive for a solar battery assembly. The single-component bonding sealing type silicone adhesive comprises partial silylated polyurethane, wherein the partial silylated polyurethane is prepared through following ingredient reactions that (a) at least one flexible long-chain aliphatic hydrocarbon polyalcohol and diisocyanate take reaction to synthesize end-NCO (isocyanate group) based polyurethane; and (b) at least one silane coupling agent is used for carrying out partial end sealing on the end-NCO based polyurethane. Main body chains of the partial silylated polyurethane used by the single-component bonding sealing type silicone adhesive have long-chain aliphatic chains, and the aliphatic chains have excellent damp isolation capability; meanwhile, the excellent weatherability is realized; the reaction with micromolecule ketoxime and alcohol removed by crosslinking agents can be realized, the adhesive layer cracking of deep-layer curing sealing adhesive is prevented, meanwhile, the damp can also be absorbed, and the storage capability of the sealing adhesive is improved; the participation in the cross-linking reaction of the sealing adhesive can be realized; and the fast curing is promoted, and the adhesion intensity of substrates is improved.

Description

technical field [0001] The invention relates to a sealant used for bonding and sealing the frame of a solar photovoltaic cell module, bonding and sealing a junction box, and bonding the back rail of a thin-film battery, in particular to a single-component bonding and sealing type for a solar cell module Silicone glue. Background technique [0002] Solar panels are used outdoors for a long time, so they will be exposed to wind, water, ultraviolet rays, and atmospheric atmosphere. Solar panels have high requirements for water-vapor isolation. If water penetrates into the solar panel and contacts battery electrodes and photoelectric component materials, it will seriously affect the efficiency of the battery and reduce the service life of the solar battery. The silicone sealant used for the frame and sealing of solar photovoltaic modules needs to tightly seal the frame and the laminated laminate, the connection is firm and does not damage the glass, and at the same time, the cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/83C08G18/69C08G18/67C09J183/06C09J175/14C09J11/08C09J11/06C09J11/04H01L31/048H01L31/18
CPCY02E10/50
Inventor 罗建军郑飞璠沈鸣桂娟夏芃曲高举
Owner 上海拓引数码技术有限公司
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