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《马来酸酐改性蓖麻油制备耐光性聚氨酯复鞣剂--乳液性能研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第23卷第6期精细化工VoI.23,No.62006年6月FINECHEMICALSJune2006皮革化学品马来酸酐改性蓖麻油制备耐光性聚氨酯复鞣剂*———乳液性能研究l2*l鲍利红,兰云军,张淑芬(l.大连理工大学精细化工国家重点实验室,辽宁大连ll60l2;2.温州大学浙江省皮革工程重点实验室,浙江温州325027)摘要:用马来酸酐改性蓖麻油(MCO)合成了一系列不同组成的耐光性聚氨酯复鞣剂水乳液(MC-PUR),研究了复鞣剂中—COOH质量分数、n(NCO)/n(OH)、m(MCO)/m(PEGl0
2、00)对乳液电导率、黏度、临界聚沉值(CC.C)、耐酸稳定性的影响。结果表明,随—COOH质量分数从3%增大到7%,电导率从l556!s/cm增大到3435!s/cm,黏度先从l68mPa·s增大到224mPa·s,后又降低到85mPa·s,当w(—COOH)=5%时,黏度达到最大值;随n(NCO)/n(OH)从0.5增大到0.9,电导率从2943!s/cm降到2464!s/cm,黏度从428mPa·s降到224mPa·s;随m(MCO)1m(PEGl000)从l1l增大到310,黏度从224mPa·s降到
3、67mPa·s;CC.C随—COOH质量分数增加和m(MCO)/m(PEGl000)增大而降低;耐酸稳定性结果证明,当w(—COOH)=3%~5%,m(MCO)1m(PEGl000)=l1l,n(NCO)/n(OH)=0.5~0.9时,MC-PUR适用于皮革复鞣工序。关键词:改性蓖麻油;电导率;黏度;临界聚沉值;耐酸稳定性中图分类号:TO323.8文献标识码:A文章编号:l003-52l4(2006)06-0582-06PreparationofSunproofPolyurethaneRetanningAg
4、entswithMaleicAnhydrideModifiedCastorOil———StudyoftheEmulsionsPropertiesl2*lBAOLi-hong,LANYun-jun,ZHANGShu-fen(l.StateKeyLabofFineChemical,DalianUniuersityofTechnology,Dalianll60l2,Liaoning,China;2.ZhejiangKeyLabofLeatherEngineering,WenzhouUniuersity,Wenzh
5、ou325027,Zhejiang,China)Abstract:AseriesofsunproofwaterbornepoIyurethaneretanningagents(MC-PUR)withdifferentcompositionsweresynthesizedwithmaIeicanhydridemodifiedcastoroi(IMCO).EffectsofcarboxyIcontentandn(NCO)/n(OH),m(MCO)/m(PEGl000)ratiosonitsconductivit
6、y,viscosity,criticaIcoaguIationvaIue(CC.C)andacidresistantstabiIitywerestudied.AscarboxyIcontentincreasesfrom3%to7%,theconductivityincreasesfroml556!s/cmto3435!s/cm,andtheviscosityincreasesatfirstfroml68mPa·sto224mPa·sandthendecreasesto85mPa·s.Asn(NCO)/n(O
7、H)ratioincreasesfrom0.5to0.9,theconductivitydecreasesfrom2943!s/cmto2464!s/cmandtheviscositydecreasesfrom428mPa·sto224mPa·s.Asm(MCO)/m(PEGl000)ratioincreasesfroml1lto310,theviscositydecreasesfrom224mPa·sto67mPa·s.TheCC.CdecreasesascarboxyIcontentandm(MCO)/
8、m(PEGl000)ratioincrease.TheacidresistantstabiIityexperimentsshowedthat,whenw(—COOH)=3%~5%,m(MCO)1m(PEGl000)=l1landn(NCO)/n(OH)=0.5~0.9,theMC-PURissuitabIeforIeatherretanningprocess.*收稿日期:2005-ll-ll;定用日期:2005-
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