本文選題：離子液體 + 溶解漿��； 參考：《福建農(nóng)林大學》2017年碩士論文

【摘要】：隨著電子產(chǎn)品更新?lián)Q代的加快,輕質(zhì)、高透光率的導電薄膜材料越來越被廣泛使用。目前,光電材料中的透明導電薄膜基底材料,主要采用一些透明度高,熱穩(wěn)定性好的有機聚合物材料。然而這些人工有機高分子材料降解困難,對生態(tài)環(huán)境會造成破壞。為了實現(xiàn)資源可持續(xù)發(fā)展,使用新型材料替代化石原料的需求已經(jīng)迫在眉睫。本文以自然界含量最豐富的纖維素為原料,制備出高光電性能的導電膜,并將其用于在鈣鈦礦電池中。分析比較咪唑類離子液體1-烯丙基-3-甲基咪唑氯鹽([Amim]Cl)、1-丁基-3-甲基咪唑氯鹽([Bmim]Cl)、1-乙基-3-甲基咪唑醋酸鹽([Emim]Ac)對針葉木溶解漿纖維(DP=500)的溶解和成膜性質(zhì),優(yōu)選適合于制備透明纖維素膜的離子液體。結(jié)果表明:以[Amim]Cl作為溶劑,制備的纖維素膜具有較好的透光率以及成膜工藝的可操作性,而[Bmim]Cl、[Emim]Ac制備所得的纖維素膜透光率偏低,且強度也較弱。優(yōu)化[Amin]Cl溶解及制膜工藝,發(fā)現(xiàn)在反應溫度90℃,反應時間45 min,溶解濃度3%可以制備出透光率86.4%,抗張強度38.1 Mpa以及結(jié)晶度31.6%的纖維素薄膜。優(yōu)化乙二醇制備銀納米線的實驗工藝,分析聚乙烯亞胺對銀納米線的生成和均一性的影響。結(jié)果表明:在反應溫度170℃,PVP(聚乙烯吡咯烷酮)與AgNO3的摩爾比為4.6:1,反應時間為40min的條件下,可以制備出平均直徑65 nm,平均長度8 μm的銀納米線,但是制得的銀納米線均一性較差。分析比較聚乙烯亞胺對銀納米線制備的影響,在銀納米線反應30min后,加入一定量的聚乙烯亞胺可以制備出平均直徑85 nm,平均長度15 μm的銀納米線,且得到的銀納米線均一性顯著提高。采用離心沉積法在纖維素薄膜上沉積銀納米線制備導電薄膜,研究銀納米線沉積定量以及硝酸處理對導電薄膜透光率和方阻的影響。研究發(fā)現(xiàn):銀納米線的定量維持在0.18 g/m2,可制備出透光率73%,方阻23 Ω/□的導電膜。硝酸處理濃度為16%,處理時間2 min,導電膜的透光率可以達到80.4%,而方阻基本保持不變,為28Ω/□。將制備的透明導電薄膜作為陽極制備鈣鈦礦薄膜太陽能電池,分析太陽能電池電學性質(zhì)。結(jié)果表明:太陽能電池短路電流密度為9.58 mA/cm2,開路電壓為1.02V,填充因子為45.8%,光電轉(zhuǎn)化效率為4.49%。
[Abstract]:With the rapid upgrading of electronic products, light, high transmittance conductive film materials are more and more widely used. At present, transparent conductive thin film substrates in optoelectronic materials mainly use some organic polymer materials with high transparency and good thermal stability. However, the degradation of these artificial organic polymer materials is difficult, which will damage the ecological environment. In order to realize the sustainable development of resources, it is urgent to replace fossil materials with new materials. In this paper, a conductive film with high photoelectric properties was prepared from cellulose, which is the most abundant cellulose in nature, and used in perovskite battery. The dissolving and film-forming properties of imidazole ionic liquid 1 allyl 3 methyl imidazole chloride salt ([Amim] Amim 1 Ding Ji 3 methyl imidazole chloride salt [Bmim] Bmim 1 ethyl 3 methyl imidazole acetate ([Emim] Acc) on coniferous wood lytic pulp fiber DP500) were analyzed and compared. The ionic liquids suitable for the preparation of transparent cellulose membranes are selected. The results show that the cellulose membrane prepared by using [Amim] Cl as solvent has better transmittance and more maneuverability of film forming process, while [Bmim] Cl and [Emim] ac have lower transmittance and weaker strength than those prepared by [Bmim] Cl and [Emim] ac. By optimizing the process of [Amin] Cl dissolution and film preparation, it was found that cellulose films with light transmittance of 86.4%, tensile strength of 38.1 Mpa and crystallinity of 31.6% could be prepared at reaction temperature 90 鈩，

本文編號：1777957