【正文】 ，有機物，通常是由有機二元羧酸與多元醇縮合 ,或由內(nèi)酯與多元醇聚合而成。不同品種的聚酯多元醇由于種類不同或制備工藝不一樣，性質(zhì)也不一樣，對于聚酯多元醇比較重要的幾個指標是羥值、酸值、水分、粘度、分子量、密度以及色度等。以己二酸和不同多元醇為原料，經(jīng)酯化、縮聚合成己二酸系聚酯多元醇 ,工業(yè)上生產(chǎn)聚酯多元醇常采用真空脫水法，即在真空條件下以鈦酸四丁酯為催化劑，二元酸和二元醇進行縮聚反應(yīng)，合成一定分子量的聚酯多元醇。厭氧工藝采用水解酸化技術(shù) ,好氧工藝采用生物接觸氧化法技術(shù)。 關(guān)鍵詞： 聚酯多元醇，合成 ，真空度 聚酯多元醇生產(chǎn)工藝及分析 II Abstract Polyester polyols anic pounds are usually posed of anic carboxyli acid and Polyols condensation or by a lactone and polyol polymerizing . Different varieties of polyester polyols as different types or different preparation technology , properties are not the same , for the polester polyol several important indexes of hydroxyl value , acid value , moisture is viscosity , molecular weight , density and chroma . Polyester polyol characteristics and uses : polyerster polyurethane for molecule contains more amino ester , a polar group , production of polyester polyol vacuum dewatering method is often used . In order to adipic acid and polybasic alcohol as raw material , through esterification , polycondensation of polyester polyol synthesis of adipic acid, namely in the vacuum condition with buty titanate four as catalyst , diacid and diol for condensation reaction , syntyhesion of certain molecular weight polyester polyol , cohesive strength ang strong adhesion high strength , wear resistance . Engaged in polyurethane (PU ) synthetic leaher production , according to the biodegradability of wastewater is poor ( BOD5/COD ) , concentration of anic matter ,suspended matter content chromaticity are larger , and containing biorefractory anic matter ,water quality constituents in pound Miscellaneous charateristics , choose “ anaerobic and aerobic ” bined treatment . Anaerobic process using hydrolytic acidification technology ,aerobic technology . Art by biological contact oxidation technolytic . The running results show that , after being treated with this technique , wastewater COD ,BOD5,NH3N indicators can reach the standard of discharge , is conducive to the sustainable development of enterprises . Keywords: polyester polyols ， synthetic， vacuum degree 聚酯多元醇生產(chǎn)工藝及分析 III 目錄 1 聚酯多元醇的概念及用途研究 ................................................................................ 1 聚酯多元醇的概念 ........................................................................................... 1 聚酯多元醇的用途 ........................................................................................... 1 聚酯多元醇的發(fā)展狀況及研究意義 ............................................................... 2 2 合成聚酯多元醇概述 ................................................................................................ 2 合成聚酯多元醇的原材料 ............................................................................... 2 聚酯多元醇反應(yīng)機理 ....................................................................................... 2 聚酯多元醇的制備方法 ................................................................................... 4 聚酯多元醇的合成工藝 ................................................................................... 4 合成聚酯多元醇的影響因素 ........................................................................... 5 ..................................................................................... 5 3． 1 引言 ................................................................................................................ 5 3． 2 實驗主要原料及處理方法 ............................................................................ 6 聚酯多元醇 PEPA． R 的合成 ......................................................................... 6 聚酯多元醇 PEPA． B 的合成 ......................................................................... 7 聚酯多元醇 PEPA． A 的合成 ........................................................................ 7 醇酸摩爾比對聚酯多元醇的影響 ................................................................... 8 小結(jié) ................................................................................................................... 9 4 水可分散型 磺化聚酯多元醇的合成 ........................................................................ 9 引言 ................................................................................................................... 9 實驗主要原料 ................................................................................................. 10 合成路線 ......................................................................................................... 10 合成工藝步驟 ................................................................................................. 11 水可分散型聚酯多元醇的表征 ..................................................................... 11 結(jié)果與討論 ..................................................................................................... 12 5 多元醇生產(chǎn)的中控分析 .......................................................................................... 13 酸值分析 ......................................................................................................... 14 羥值分析 ......................................................................................................... 15 粘度分析 ......................................................................................................... 16 色數(shù)測定 ......................................................................................................... 16 水分測定 ......................................................................................................... 17 6 聚酯多元醇的精益生產(chǎn)工藝 .................................................................................. 17 實驗 ................................................................................................................. 17 工藝步驟 ......................................................................................................... 20 準備工作 ...................................................................................................... 20 精己二酸的添加 .............................................................