本文關(guān)鍵詞： 催化油漿 瀝青 實(shí)沸點(diǎn)蒸餾 抗老化性能 紅外譜圖　出處：《中國(guó)石油大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年01期 　論文類型：期刊論文

【摘要】：南美重油中摻加油漿后,通過(guò)實(shí)沸點(diǎn)蒸餾制備AH-70瀝青;分別采用薄膜烘箱實(shí)驗(yàn)法(TFOT)和加速老化實(shí)驗(yàn)法(PAV)模擬瀝青的短期和長(zhǎng)期老化,考察不同的油漿摻量對(duì)瀝青短期和長(zhǎng)期抗老化性的影響,并對(duì)老化機(jī)制進(jìn)行研究。結(jié)果表明:南美重油摻加0%、3%、6%、9%和12%油漿后分別切割到425、430、430、430、435℃可得到AH-70瀝青;隨著油漿摻加比例的增大,經(jīng)短期老化后瀝青的殘留針入度比、15℃殘留延度降低,軟化點(diǎn)升高率增大;瀝青經(jīng)過(guò)長(zhǎng)期老化后,殘留針入度比降低、軟化點(diǎn)升高率增大;瀝青在短期老化中沒(méi)有發(fā)生明顯的官能團(tuán)氧化反應(yīng),隨摻加油漿比例的增大,瀝青中輕組分的揮發(fā)和芳香分、膠質(zhì)的縮合加劇是導(dǎo)致瀝青短期抗老化性逐漸變差的原因;瀝青經(jīng)長(zhǎng)期老化后,發(fā)生氧化生成亞砜和羰基官能團(tuán),油漿中的芳烴化合物可有效地抑制瀝青氧化反應(yīng)中的自由基反應(yīng),但芳香分、膠質(zhì)的縮合加劇仍導(dǎo)致瀝青長(zhǎng)期抗老化性逐漸變差。
[Abstract]:AH-70 asphalt was prepared by real boiling point distillation after blending with oil slurry in heavy oil of South America. The short and long term aging of asphalt was simulated by TFOT and PAV, respectively, and the effects of different amount of slurry on the short and long term aging resistance of asphalt were investigated. The aging mechanism was studied. The results showed that the South American heavy oil was cut to 425,430,430,430 after adding 0% and 12% oil slurry respectively. AH-70 asphalt can be obtained at 435 鈩，

本文編號(hào)：1453190