高含水率木材用胶粘剂与胶接技术的研究

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1、东北林业大学博士学位论文高含水率木材用胶粘剂与胶接技术的研究姓名：李海英申请学位级别：博士专业：木材科学与技术指导教师：顾继友20040601A嚣STRACTThesynthetictechnologyofmoisturecuringisoeyanateadhesiveandadhesivetechnology,bondingmechanismforhighmoisturecontentwoodwerestudiedinthispaper．Themoisture-eurlngisocyanateadhesionproduce

2、dintheresearchhasbeenappliedOnwoodmanufactureindustry．Itnotonlyachievedbondinghi翡moistuecontentwood(20％．150％)，butalsoresolvedtheenvironmentalpollutionproblemoffreeformaldehydeandfreehydroxybenzcnecausedbyUFandPFresinadhesiveusedpresently．Itisveryimportantpracticali

3、tyvalueforusinghighqualityjuvenilewoodandfast-growingwoodtomanufactureteintegrationslicing．BasedOilthesystematicaldeepstudiesonadhesiveformuladesign，materialsselection，preparationprocessandtechnologycontroletc。thebestformulaandsynthetictechnologyofmoisture-curingis

4、ocyanateadhesionwereconfirmed，Inaddition，thepreparationprocessofone-componentsolvent—freemoisture—curingisoeyanateadhesivepointingonsolventproblemM㈣alsostudiedinthispaper．Basedonwoodenmaterialswithhighmoisturecontentasrawmaterials，thetechnologyofman-madeslicedwithm

5、oisture-curableisoeyanateadhesiveanddefinedthebestbondingtechnologywerestudiedinthispaper,PointedOntheproblemsofbrittlenessandhighercostofmoisturecuringisoeyanateadhesiveinpractice，theimprovementofitwasdoneintheresearch．Ondiscussionofhi秘moisturecontentwoodgluingmec

6、hanism：bymeansofcontactangleandspectralmicroscope(combinedsliceofgluelayer)，ofmoisturecuringisocyanateadhesivethewettablilityandpenetrabilitysituationonwoodsurfaccswithdifferemmoisturecontentWasstudied；thecomparisonexperimentWaSdonefordifferemadhesivewiththesamemoi

7、sturecontent；productionsstructureaftercuringreactionwerestudiedbetweenthemoisture-curingisecyanateadhesiveandhighmoisturecontentwoodbyFTIR．thewatereffectwasdefinedonthereaction姆DSC，thedifferentpointsofviewonmechaniccombinationtheory,adhesivetheoryandchemicalbond，th

8、ebondingmechanismofhighmoisturecontentwoodWasanalyzedandexplained．Keywood：highmoisturecontentwood；moisture-curingisocyanateadhesive；gluingtechnol