Park Jin Hwan, Hwang Seok-Ho
Materials Chemistry & Engineering Laboratory, Department of Polymer Science and Engineering, Dankook University, Yongin, Gyeonggi-do 16890, Korea.
ACS Omega. 2024 Jan 8;9(3):3858-3865. doi: 10.1021/acsomega.3c07969. eCollection 2024 Jan 23.
In this study, a newly designed adhesion promoter, a modified ethylene-propylene-diene terpolymer (-EPDM), was constructed a simple thiol-ene click reaction between the ethylene-propylene-diene terpolymer (EPDM) and 3-mercaptopropyltrimethoxysilane (MPTS) to employ polyolefin elastomer (POE) encapsulants in photovoltaic modules. The grafting reaction of MPTS on an EPDM backbone (thiol-ene click reaction) was verified using H NMR, Si NMR, and SEM/EDX. The thermal and mechanical characteristics of the POE compounds did not significantly change with an increasing -EPDM content irrespective of the cross-linking state. Interestingly, the adhesion strength to the glass substrate increased linearly with an increasing -EPDM content until 9 phr. Also, the POE compounds containing more than 12 phr -EPDM showed cohesion failure of the encapsulant layer, remaining as a residue of the encapsulant layer on the glass surface after peel testing. The damp-heat test was conducted to evaluate the long-term durability of the photovoltaic module encapsulated with -EPDM, and no significant power loss was found even after 1000 h under the test conditions.
在本研究中，通过乙烯-丙烯-二烯三元共聚物（EPDM）与3-巯基丙基三甲氧基硅烷（MPTS）之间简单的硫醇-烯点击反应构建了一种新设计的粘合促进剂——改性乙烯-丙烯-二烯三元共聚物（-EPDM），以用于光伏组件中的聚烯烃弹性体（POE）密封剂。使用核磁共振氢谱（H NMR）、核磁共振硅谱（Si NMR）以及扫描电子显微镜/能谱仪（SEM/EDX）对MPTS在EPDM主链上的接枝反应（硫醇-烯点击反应）进行了验证。无论交联状态如何，POE化合物的热性能和机械性能均不会随着-EPDM含量的增加而发生显著变化。有趣的是，直到9 phr时，与玻璃基板的粘合强度均随着-EPDM含量的增加而线性增加。此外，含有超过12 phr -EPDM的POE化合物在剥离测试后表现出密封剂层的内聚破坏，在玻璃表面上残留有密封剂层的残余物。进行了湿热试验以评估用-EPDM封装的光伏组件的长期耐久性，即使在测试条件下经过1000小时后也未发现明显的功率损失。
