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1、纸板重点（Keyboard）Topic:nouninterpretation,simpleanswer,discussion.(thinkquestionsfortheteacherwithboldblacklines)ThefirstchapterPaperandboard,1.Definitionofpaperandpaperboard:paperandpaperboardareakindofmeshstructurecomposedofmacroscopicfibers.2.Characteristicsofpaperstructure:thenon-
2、homogeneousthinpagescomposedofcomplexstructuralelements:fiber,packing,glueanddye;Thestructureofpaperhasacohesiveforce:hydrogenbondingforce(main),chemicalmasterpricekey,vanderWaalsforce,surfaceinterweavingforce;Thestructureofthepaperisnotcontinuous,itisakindofporousmaterial:itdeterm
3、inestheabsorptionproperty,breathability,smoothness,moistureabsorptionandthedeformationofwaterchanges.(throughtheopeningofthepaper,theholesinthecavityandtheinnerspaceofthefiber)therearethreedimensionalstructures:longitudinal,transverseandz-direction;Therearetwosides:formedoftheoppos
4、itesex,onesidecontactwiththenet,onesidecontactwiththeblanket.3.Propertiesofpaperandboard:Thefunctionalpropertiesofthepaperwhicharedeterminedbythepropertiesofthefiberitself:theadsorptionandscatteringtypeofpaper;Hydrophilicity-hydroxy;Thebondingstrengthandstrengthofhydrogenbonds;Flex
5、ibility;Flammability;Thecolorfunction;Theinterwovenfabricofthepaperisporous;Addedtothefunctionalmaterial:glue,filling,etc.4.Performanceofpaper:generalperformance:appearancequality,quantitative,thickness,tightness,dimensionalstability,etc.Mechanicalproperties:tensilestrength,breakin
6、gresistance,foldingresistance,elongation,compressivestrength,stiffness,tensileenergyabsorption;Permeability:airpermeability,humidity,oilpenetration,waterresistance,hydrophobicity,etc.Opticalproperties:whiteness,gloss,color,(no)transparency,etc.;Surfaceproperties:smoothness,surfacef
7、rictioncoefficient,roughness,adhesionproperty,lossofwooldrop,etc.Printingperformance:surfacestrength,inkabsorption,smoothness,stiffness,sizing,etc.Otherspecialproperties:chemicalproperties,electricalproperties,watersolubility,etc.2.Longitudinal(Z)andtransverseofpaper(board)1.Defini
8、tion:generallyspeaking,the
