Modified POE photovoltaic packaging adhesive film, preparation method thereof and photovoltaic module

By introducing low-temperature cyclic olefin copolymer (COC) and polar functionalized grafted POE into the POE photovoltaic encapsulation film, combined with a composite silane coupling agent, the adhesion and water-blocking problems of the POE photovoltaic encapsulation film are solved, thereby improving the long-term reliability and power generation efficiency of photovoltaic modules.

CN121930747AActive Publication Date: 2026-04-28JIANGSU ZHONGLAI NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202610390736.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-27
Publication Date
2026-04-28
Estimated Expiration
2046-03-27

AI Technical Summary

Technical Problem

Traditional POE photovoltaic encapsulation films have low adhesion strength to photovoltaic glass and high water vapor permeability, which affects the structural integrity and power generation efficiency of photovoltaic modules.

Method used

Low-Tg cyclic olefin copolymer COC is used as a barrier masterbatch, and the adhesion strength between the encapsulant film and photovoltaic glass is improved and the water vapor transmission rate is reduced through the synergistic effect of polar functionalized grafted POE and composite silane coupling agent.

Benefits of technology

This technology achieves ultra-high adhesion strength and extremely low water vapor transmission rate of photovoltaic encapsulation film to photovoltaic glass, improving the aging resistance, mechanical strength and anti-PID performance of photovoltaic modules, extending the service life of cells and improving photoelectric conversion efficiency.

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Abstract

The invention relates to the technical field of photovoltaic packaging materials, and discloses a modified POE photovoltaic packaging adhesive film, a preparation method thereof and a photovoltaic module. The modified POE photovoltaic packaging adhesive film is prepared from 60 to 100 parts of POE resin, 8 to 50 parts of barrier master batch, 0.5 to 2 parts of composite silane coupling agent, 0.5 to 1.5 parts of cross-linking agent and 0.2 to 2 parts of assistant cross-linking agent, the barrier master batch comprises 5-30 parts of polar functionalized grafted POE and 3-20 parts of a barrier agent; the blocking agent is a cycloolefin copolymer COC with Tg less than or equal to 120 DEG C. The modified POE photovoltaic packaging adhesive film has the advantages of high light transmittance, PID resistance and the like of the existing POE adhesive film, and also has high bonding strength and low water vapor transmittance to photovoltaic glass; the problems of adhesion, water resistance and light transmittance of the POE adhesive film are solved synergistically, the inherent processing compatibility problem between COC and a POE substrate is solved, and a foundation is laid for improving the long-term reliability of a photovoltaic module.
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