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1、第202175卷年第l212月期化學(xué)研究與應(yīng)用Vo1.27,No.12ChemicalResearchandApplicationDec..2015文章編號(hào):1004—1656(2015)12.1849-07響應(yīng)面法優(yōu)化雙羥丙基封端聚硅氧烷的微波合成工藝研究成西濤,李穩(wěn)宏,黃方方,張存社,王前進(jìn),周魁(1.西北大學(xué)化工學(xué)院,陜西西安710069;2.陜西省石油化工研究設(shè)計(jì)院,陜西西安710054)摘要:采用微波輻射法合成雙羥丙基封端聚硅氧烷,將響應(yīng)面分析法應(yīng)用于1,3.雙(3一三甲硅氧基丙基)四甲基二硅氧烷的合成工藝,通過Box—Behnken中心組合實(shí)驗(yàn),考察原料摩爾配比、反
2、應(yīng)時(shí)間、微波輻射溫度和催化劑加量四個(gè)因素對(duì)1,3-雙(3一三甲硅氧基丙基)四甲基二硅氧烷收率的影響,得到最佳微波合成工藝參數(shù)并建立多元回歸數(shù)學(xué)模型。結(jié)果表明:微波合成最佳反應(yīng)條件n(2-烯丙基三甲基硅氧烷)/n(1,1,3,3.四甲基二硅氧烷)=2.4:1,反應(yīng)時(shí)間103min,微波溫度95℃,催化劑加量19mg/kg,得到產(chǎn)物收率可達(dá)94.46%。以優(yōu)化條件下制備的1,3-雙(3-三甲硅氧基丙基)四甲基二硅氧烷為原料,制備出了雙羥丙基封端聚硅氧烷,目標(biāo)產(chǎn)物轉(zhuǎn)化率可達(dá)90.5%。采用IR、1HNMR、GC對(duì)產(chǎn)品結(jié)構(gòu)進(jìn)行了表征。關(guān)鍵詞:雙羥丙基封端聚硅氧烷;1,3.雙(3.三甲硅
3、氧基丙基)四甲基二硅氧烷;微波合成;響應(yīng)面法中圖分類號(hào):O621.3文獻(xiàn)標(biāo)志碼:AOptimizationofmicrowavesynthesisprocessfor1,3-bis(3-hydroxypropy1)·1,1,3,3-tetramethylpolysiloxanesbyresponsesurfacemethodCHENGXi.tao·‘,LIWen—hong,HUANGFang-fang,ZHANGCun—she,WANGQian-jin,ZHOUKui(1.ColegeofChemicalEngineering,NoahwestUniversity,Xi"an,
4、Shaanxi,710069,China;2.ShaanxiProvincialResearchandDesignInstituteofPetroleumandChemicalIndustry,Xi"an,Shaanxi,710054,China)Abstract:1,3-bis(3-hydroxypropy1)1,1,3,3-tetramethylpolysiloxaneswassynthesizedwithmicrowaveheatingirradiationmeth—od.Responsesurfacemethodologywasadoptedtooptimizethep
5、rocessconditionsofsynthesizing1,3-di(3-trimethylsiloxypropy1)tetramethyldisiloxane.Fourparametersincludingreactantsmolarratio,loadofcatalyst,reactiontemperatureandtimewereopti—mizedusingtheBox-Behnkencentralcompositedesignoptimizationforachievingmaximumyieldof1,3-di(3-trimethylsiloxypro·py1)
6、tetramethyldisiloxane,andthequadficpolynomialregressionmodelwasestablished.Theresultsshowedthattheoptimalparam-eterswereasfollows:n(2-allyloxytrimethylsilane)/n(1,1,3,3-tetramethyldisiloxane)=2.4:1,catalystloadWas19mg/kg,there—actiontemperatureandtimewere100℃and103min.Undertheoptimalconditio
7、n,theaverageyieldwas94.46%.1,3-Bis(3一hydroxypropy1)-1,1,3,3-tetramethylpolysiloxaneswaspreparedwith1,3-Di(3-trimethylsiloxypropy1)tetramethyldisiloxaneassubstrate.a(chǎn)ndtheconversionrateofthetargetproductWas90.5%.Thestructureandcompositionoftheproduct