Solar Cell Primer Adhesion via Polymerizable Ester
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Solar cell modules with transparent resin protective materials face issues of poor adhesion, durability under high temperatures, and durability against cooling and heating cycles, leading to peeling from the sealing material, which has hindered their practical use in severe environments like vehicles.
Innovation Solution
A primer containing a polymerizable ester, adhesion promoter, and polymerization initiator is applied between the transparent resin surface protective material and the sealing material, forming a mixture layer that enhances adhesion and durability through chemical bonding and polymerization, preventing peeling over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a transparent resin is used as a surface protective material instead of glass, then the mass of the solar cell module is reduced, but the adhesion between the surface protective material and sealing material deteriorates
Solution Approach 1:
An adhesive material comprising a cured product of a primer is introduced as an intermediary between the transparent resin surface protective material and the sealing material. The primer contains a polymerizable ester and a polymerization initiator, forming an adhesive layer that chemically bonds to both the transparent resin and sealing material, thereby resolving the adhesion problem while maintaining weight reduction benefits
Solution Approach 2:
The adhesive material is formed as a composite structure through polymerization of the primer components. The cured product of the primer creates a composite adhesive layer that combines the bonding capabilities needed to interface between the transparent resin and sealing material, achieving both light weight and strong adhesion
2Weight of moving object
If a transparent resin is used as a surface protective material, then the mass of the solar cell module is reduced, but the durability under high temperature environment deteriorates
Solution Approach 1:
The adhesive material acts as a thermal buffer and protective intermediary between the transparent resin and sealing material. The polymerizable ester-based adhesive layer provides thermal stability and protects the transparent resin from high temperature degradation, maintaining durability while preserving weight reduction
Solution Approach 2:
The adhesive material undergoes polymerization transformation from liquid primer to solid cured product, changing its physical parameters to achieve optimal thermal resistance. The cured adhesive layer provides enhanced thermal stability that protects the transparent resin surface protective material under high temperature conditions
3Weight of moving object
If a transparent resin is used as a surface protective material, then the mass of the solar cell module is reduced, but the durability against cooling and heating cycle deteriorates
Solution Approach 1:
The adhesive material serves as a flexible intermediary layer that absorbs and accommodates thermal expansion and contraction stresses during cooling and heating cycles. This protective interface prevents stress concentration at the transparent resin-sealing material interface, maintaining bond integrity through temperature cycling
Solution Approach 2:
The polymerizable ester-based adhesive material changes its physical state and bonding characteristics through polymerization, creating a cured product with optimized mechanical properties. This transformed adhesive layer provides enhanced flexibility and stress resistance, enabling the assembly to withstand repeated thermal cycling without delamination
4Weight of moving object
If a transparent resin is used as a surface protective material, then the mass of the solar cell module is reduced, but peeling of the surface protective material from the sealing material occurs over time
Solution Approach 1:
The adhesive material comprising the cured primer acts as a permanent intermediary bonding layer between the transparent resin and sealing material. This adhesive interface provides sustained chemical bonding that prevents peeling and delamination over time, ensuring long-term structural integrity while maintaining the weight benefits of transparent resin
Solution Approach 2:
The cured product of the polymerizable ester-based primer forms a composite adhesive structure that provides durable, long-term bonding. This composite adhesive layer resists degradation and maintains bond strength over extended periods, preventing peeling of the surface protective material from the sealing material
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The primer improves the adhesion and durability of the transparent resin protective material, ensuring it remains bonded to the sealing material under high temperatures and withstands cooling and heating cycles, thus preventing long-term peeling.
Implementation Method 1
the polymerizable ester contained in the primer polymerizes by the polymerization initiator during the aforementioned bonding process to form a (meth)acrylic polymer
Implementation Method 2
The adhesion promoter has an alkoxysilyl group and a functional group improvable in adhesion to an acrylic resin or a methacrylic resin
Data Source
Figure 1~2
AI summary
Provided is a primer for a solar cell module which makes it possible to prevent peeling of a surface protective material from a sealing material over a long time, and a solar cell module manufactured using this primer. The primer includes 40 to 95 parts by mass of a polymerizable ester, 5 to 60 parts by mass of an adhesion promoter, and a polymerization initiator. The polymerizable ester includes at least one of an acryloyl group and a methacryloyl group. The adhesion promoter includes a functional group improvable in adhesion to an acrylic resin or a methacrylic resin, and an alkoxysilyl group. The polymerization initiator is configured to be able to initiate polymerization of the polymerizable ester. The content of the polymerization initiator is 0.1 to 10 parts by mass based on 100 parts by mass as a total of the polymerizable ester and the adhesion promoter.