新型AKD乳液在白水全封閉體系中的應(yīng)用及留著機(jī)理的研究.pdf_第1頁
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1、南京林業(yè)大學(xué)碩士學(xué)位論文新型AKD乳液在白水全封閉體系中的應(yīng)用及留著機(jī)理的研究姓名:曾麗萍申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):制漿造紙工程指導(dǎo)教師:周小凡20040601StudyontheApplicationandRetentionMechanismofNewAKDEmulsioninClOsedWhiteWaterSystemABSTRACTThemodernpapermakingindustryisdeVelopingforwardtone

2、utral一alkalescenceandclosedwhitewatersystemAtthesametime,theanionictrashaccumulatedincircularwhite、Ⅳater’whichmaketheeffectofallkindsofwetendadditives(particularlycationicadditives)worsen,thewastageandalsothecostofpaperm

3、akingbecomelargerconstantlyNowthereisabetternon—ionretentionaidsystemwhichcomposedofpolyethyIeneoxide(PEO)andbentoniteandcouldresisttheinterfereofanionictrashpreferablyInthispapeLthesizingef&ctoftraditionalcationicAKDinC

4、PAM,bentoniteandPE0/bentonitesystemsandthesizingef托ctinconditionofthepresenceofanionictrashwerestudiedThemethodofappendingsomeadditiVestoimpToVethesizingdegreewasalsostudiedAndthemethodofchangingthecomponentoftheemulsifi

5、erandamelioratingthetechnicsofemulsincationtoprepareanewAKDemulsionwhichcanresisttheinterfbrerofanonictrashandtheapplyingeff色ctandtheretentionmechanismofthenewAKDemulsionwerediscussedinthispaperMainresultshaVebeenobtaine

6、dasf0110ws:1ThetraditionalcationicAKDcouldgaingoodsizingdegreeinPEO/bentonitesystemandCPAM/bentonitesystem;thesizingdegreeofcationicAKDemulsioncouldbestronglyinterferedbyanionictrashinthesetwetentionsystemsTheaVeragedecr

7、easingextentis30%Thedecreasingextentofsizingdegreecouldbeadvancedbyaddingwaters01ublephelonicresin(PFR)toPEO/6entonitesystemandtheincreasingextentwasaboutIO%2Anioniccompositeemulsifiercomposedof6—89,HLBl5,dosage20%hasasu

8、itableemulsioncapacityforAKD,andanionicAKDemulsionmadebythiswayhasagoodsizingeffectButitsstabilitywasnotverygoodanditcouldbeapplieda9emulsionemulsifingonthespotThisshouldbeinlprovedinthefuture3ThesizingdegreeofnewAKDemul

9、sionarehigherthanthatofcationicAKDemulsionwhendosagewas1argerthan015%inPEO/bentonitesystemThesizingeffectofnewemulsionisbetterthancationicemulsionandthedecreasingextentinterferedbyanionictrashis50%ofthatofcationicemulsio

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