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降粘型聚羧酸减水剂结构与性能研究 被引量:1
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作者 方云辉 钟丽娜 +4 位作者 林泽宇 闫东明 赖俊英 麻秀星 刘毅 《化学研究与应用》 CAS 北大核心 2024年第6期1258-1267,共10页
以不同分子量异戊烯基聚氧乙烯醚、乙烯基三乙氧基硅烷、丙烯酸为原材料,设计制备了不同侧链密度和不同主链长度结构的降粘型减水剂(V-PCE)。通过净浆排空时间、净浆流变及混凝土试验研究,评估了的V-PCE对浆体流动性能的影响。结果表明... 以不同分子量异戊烯基聚氧乙烯醚、乙烯基三乙氧基硅烷、丙烯酸为原材料,设计制备了不同侧链密度和不同主链长度结构的降粘型减水剂(V-PCE)。通过净浆排空时间、净浆流变及混凝土试验研究,评估了的V-PCE对浆体流动性能的影响。结果表明,固定侧链长度不变,随着酸醚比的增大,分子的侧链密度逐渐降低,主链长度逐渐增大,电荷密度逐渐增大;固定酸醚比,随着侧链长度增大,主链长度减小,电荷密度逐渐降低。具有较长主链、短侧链、较低侧链密度及较高电荷密度的IPEC1200AA2.50和IPEG1200AA3.00具有优异的降粘效果。 展开更多
关键词 v-pce 主链长度 侧链密度 排空时间 流变性
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Facile Preparation, Characterization of Flexible Organic Solar Cells Using P3HT-MWCNTS Composite Photoactive Layer
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作者 Tran Si Trong Khanh Nguyen Phuong Hoai Nam Nguyen Nang Dinh 《Journal of Materials Science and Chemical Engineering》 2020年第10期1-10,共10页
Multiwalled carbon nanotubes (MWCNTs) mixed in poly(3-hexylthiophene) (P3HT) were used as a photoactive layer for organic solar cells (OSC). The flexible OSCs of a structure of PET/rGO-P3HT/P3CT/PCBM/LiF-Al were prepa... Multiwalled carbon nanotubes (MWCNTs) mixed in poly(3-hexylthiophene) (P3HT) were used as a photoactive layer for organic solar cells (OSC). The flexible OSCs of a structure of PET/rGO-P3HT/P3CT/PCBM/LiF-Al were prepared by spincoating. The UV-Vis absorption spectra of the photoactive films and current-voltage characteristics of the OSCs showed the advantage of the composite devices above the pristine-polymeric ones. Under illumination of light with a 100 mW/cm<sup>2</sup>-powerdensity, the photoelectrical conversion efficiency (PCE) of the OSCs with 3.0 wt% MWNCTs embedded in the photoactive layer possess a value as large as 2.35%. The obtained results suggest further useful applications of the flexible large-area solar cells. 展开更多
关键词 P3HT-MWCNTs Composite Photovoltage UV-Vis Absorption Photoluminescence (PL) Quenching J-V Characteristics Photoelectrical Conversion Efficiency (PCE)
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