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Cov ntsiab lus noo ntawm cov ntawv thiab nws qhov sib npaug noo noo noo cov yam ntxwv ua lub luag haujlwm tseem ceeb hauv cov txheej txheem luam tawm. Cov ntsiab lus tsis txaus ntseeg tuaj yeem muab ntawv hluav taws xob nkig thiab nquag mus rau cov hluav taws xob zoo li qub, thaum noo noo noo noo Kev sib txawv hauv cov ntsiab lus noo noo kuj cuam tshuam ntau yam cuam tshuam, suav nrog lub zog, yoog raws, thiab kev ua kom ntev thiab ruaj khov. Cov kev hloov sab nraud yuav ua rau muaj kev tsis xws luag xws li curling, ntug nqa, wrinkling, thiab ruffled npoo.
Txhua daim ntawv hom muaj cov ntsiab lus noo noo zoo tshaj plaws uas ua kom muaj kev ua tau zoo rau lub cev. Piv txwv li, nrum - coated ntawv thiab cam 2%, thiab ib leeg {} ± 2%. Cov txiaj ntsig tseem ceeb no sawv cev rau cov ntsiab lus noo noo thaum lub sijhawm tsim.
Thaum lub sij hawm cia rau hauv cov chaw luam ntawv, ntawv - Tus nqi ntawm kev nqus dej noo nyob ntawm qhov kub thiab txias, thaum noo noo kev poob yog tswj hwm los ntawm qib tam sim no noo thiab ib puag ncig. Thaum cov nqi ntawm kev nqus thiab tsis muaj kev xav tau sib npaug, daim ntawv mus txog qhov sib npaug nrog cov pejxeem, thiab nws cov ntsiab lus noo noo ruaj khov. Cov theem no ruaj khov yog xa mus rau raws li kev sib npaug noo noo.
Tus txheeb ze yog txhais tau tias yog qhov sib piv ntawm cov neeg dej vapor tiag tiag hauv cov huab cua ntawm qhov kub siab tshaj plaws rau qhov dej siab tshaj plaws ntawm qhov kub tib yam. Qhov sib npaug noo noo noo cov ntsiab lus ntawm cov ntawv muab sib txawv nrog kev hloov pauv ntawm RH.
Sib npaug noo noo noo:
1. Cawv ntawm daim ntawv muaj pes tsawg leeg
Raws li cov txheej txheem RH ZIS, ntau cov ntaub ntawv hydrophilic nthuav tawm cov ntsiab lus noo noo ntau dua. Daim ntawv tsis muaj txiaj ntsig tsis muaj tshuaj ntxiv khaws cia noo noo, whereas fillers, sizing cov neeg sawv cev, thiab cov khaub ncaws txo qis hygroschotion. Rau tib daim ntawv qib, thicker cov khoom lag luam feem ntau muaj kev sib npaug sib npaug vim muaj ntau dua kev ua haujlwm ntawm cov khoom siv hauv paus.
2. Tus yam ntxwv kub
Ntawm tas mus li rh, qhov kub hloov pauv ntawm 15℃cov txiaj ntsig hauv kev hloov pauv siab tshaj plaws txog 0.5% hauv kev sib npaug noo noo noo noo. Txawm li cas los xij, rau kev sau npe xim xim nyob rau hauv multicolor luam ntawv, noo kev sib txawv yuav tsum tau tswj tsis pub dhau ± 0.1%. Yog li ntawd, hauv cov xim luam yeeb chaw, ob qho tib si rh thiab qhov kub yuav tsum tau tswj kom nruj, nrog cov kev hloov pauv hloov pauv tau nyob rau hauv ± 3 degree.
3. Hysteresis nyhuv thiab path khom nqi
Qhov sib npaug noo noo noo kev ua tiav los ntawm kev nqus dej noo hauv lub xeev tsis zoo hauv qab ntawm lub npe nrov ntawm tib lub npe nrov. Txhawm rau rov kho cov theem noo noo tom qab raug rau cov av noo, cov txheej txheem ntawm "overcorrate"
Tsis tas li ntawd, txoj kev xav tshwm sim qeeb dua kev nqus. Ob qho tib si txheej txheem yog cov pib nrawm tab sis decelerate raws li kev sib txig sib luag. Lub Kinetics yog nyob ntawm cov qauv qauv thiab huab cua ncig. Nyob rau hauv cov qauv txheej txheem, cov ntawv luam yeeb tuaj yeem ncav cuag qhov sib npaug (5.8%) li ntawm 35 feeb, thaum luam ntawv luam ntawv feem ntau yuav tsum tau 2-4 teev kom ruaj ntseg ntawm 5% thiab 8%. Ntim ntim ntim yuav tsum tau ntev dua. Lub sijhawm no lag ntawm OFFIENT RH hloov thiab cov ntawv teb noo noo ua rau ncua kev tawm suab, cuam tshuam rau kev sau npe qhov tseeb.
4. Anisotropy (Directional cuam tshuam)
Daim ntawv cov khoom ua yeeb yam kev sib txawv ntawm cov dej noo zuj zus vim fiber ntau. Transverse expansion yog qhov ntau dua tshaj li ntev nthuav dav. Ib leeg cellulose fibulose nthuav dav transversely txog 20 npaug ntau dua li ntev. Txawm hais tias cov fibers nyob rau hauv daim ntawv yog cia li taw qhia, ib qho kev nyiam ua ke nrog rau kev coj ua tag nrho cov kev sib tw tag nrho anisotropy. Piv txwv li, thaum RH nce ntxiv los ntawm 50% mus rau 60%, lub transverse {{{}- ntev ntev ntev yog kwv yees 3: 7 (txog 2.3: 1). Qhov kev piv txwv no nce nrog kev qhia fiber ntau. Tsawg dua kev hloov pauv hloov pauv thiab txhim kho cov ntawv luam tawm tuaj yeem ua tiav los ntawm kev kaw fiber ntau thaum chaw tsim khoom.
5. Dual - eded asymmetry
Daim ntawv tiaj tus raug nthuav tawm cov kev hloov pauv yuav caws vim yog cov dej noo noo noo ntawm cov chaw. Thaum noo noo nqus, rov qab sab nthuav dav ntau dua li cov coated lossis luam sab, ua rau caws rau sab xub ntiag. Hloov siab, thaum ziab, ntau dua shrinkage ntawm sab nraum qab induces induces caws rau nram qab. Curling predominantly ua raws li txoj kev taw qhia ntev, tshwm sim los ntawm kev ua kom zoo nkauj fiber ntau thiab cov qauv sib txawv ntawm ob sab. Cov nyhuv no yog hais tshwj xeeb hauv cov duab qhia thiab lwm cov multi- cov ntaub ntawv ply.
