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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：透光性是太陽能電池封裝用EVA膠膜的重要性能指標(biāo)。為了制得透光性較好的EVA膠膜，本實(shí)驗(yàn)以含28%VA的EVA為原料，選取合適的助劑，包括交聯(lián)劑、抗氧劑、紫外吸收劑、紫外穩(wěn)定劑、增粘劑等，采用紫外-可見分光光度計、萬能拉力試驗(yàn)機(jī)測定膠膜的透光率和拉伸強(qiáng)度，采用正交實(shí)驗(yàn)的方法，篩選出力學(xué)性能合格、透光性較好的基本配方。然后在基本配方的基礎(chǔ)上，引入稀土配合物組分Eu(DBM)2·MA·H2O，以期利用稀土配合物的熒光效應(yīng)，達(dá)到吸收紫外光、增大可見光透光率的目的。實(shí)驗(yàn)結(jié)果表明，加入稀土配合物后，膠膜的透光率明顯增加，由82.78%提高到86-87%，膠膜對紫外光有很好的吸收效果，達(dá)到了預(yù)期的目的。同時在130℃、225s的固化條件下，得到的膠膜力學(xué)性能較好，固化溫度較低，且大大縮短了固化時間。 關(guān)鍵詞：EVA；透光率；交聯(lián)度；紫外吸收劑；紫外穩(wěn)定劑；稀土配合物
Abstract：Transmission of light is an important performance index for EVA adhesive film. In this subject ethylene-vinyl acetate copolymer containing 28% VA was used to prepare EVA adhesive films for encapsulanting PV modules. Suitable auxiliaries, including crosslinking agent, antioxidants, ultraviolet absorbers, ultraviolet stabilizers, were added into EVA adhesive film. Light transmittance and tensile strength were measured by uv-vis spectrophotometer and universal tension tester. Using the orthogonal experiment method, a high transmission of light recipe is singled out as a basic recipe. Rare earth complexes components Eu(DBM)2·MA·H2O were added into the basic formula in order to absorb ultraviolet and increase transmission of light in visible light area. The results indicated that by adding rare earth complexes, the transmission of light significantly increased from 82.78% to 86-87%, and the adhesive film containing rare earth complexes had good effect of ultraviolet absorption, which achieved the expected purpose. At the condition of thermosetting temperature 130℃, time 225s, the mechanical performance of EVA film is very well, and the thermosetting time is much shorter. Key words：EVA；light transmission；degree of cross linking；uv absorber；ultraviolet stabilizers；antioxidants；rare earth complexes
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