Txawm hais tias lub substrate yog yas, ntawv los yog ntaub, lub nplaum nplaum ntawm daim kab xev los ntawm txheej ntawm cov nplaum rau ntawm qhov chaw ntawm lub substrate.Lub cev muaj zog ntawm cov nplaum ncaj qha txiav txim siab lub zog nplaum ntawm daim kab xev.Tau kawg, muaj ntau hom kab xev, kwv yees muab faib ua cov ntaub nplaum nplaum, cov ntaub nplaum dej, cov kab hluav taws xob kub thiab lwm yam.Tsis muaj kev kho tshwj xeeb lossis kev ua kom muaj zog, thiab nws tuaj yeem ua tiav nrog qee qhov kev nias.Adhesive nyhuv.Lub siab-rhiab nplaum nplaum (tseem hu ua self-adhesive) ntawm daim kab xev yog qhov tseem ceeb ntawm peb qhov kev sib tham.

Lub siab rhiab nplaum nplaum yog ib yam khoom siv polymer uas muaj viscosity siab heev thiab qee yam elasticity, xws li acrylate polymer, roj hmab, silicone roj hmab, thiab lwm yam. viscoelasticity ntawm polymers.Nws ua lub luag haujlwm tseem ceeb ntawm no: Ua ntej, cov nplaum nplaum muaj qee yam ua kua ua tau zoo, thiab lub zog saum npoo ntawm cov nplaum molecule tsawg heev, uas ua rau cov nplaum tuaj yeem nkag tau yooj yim rau saum npoo ntawm cov khoom, thiab elasticity ua rau thaum nias, cov nplaum molecules tuaj yeem sib sau ua ke es tsis txhob raug nyem ib sab;Tom qab ntawd, cov txheej txheem adhesion yog qhov tshwm sim ntawm cohesion thiab adhesion ntawm cov nplaum.

Muaj qee cov kab xev, qhov adhesion yuav nce nrog lub sijhawm.Qhov no yog vim hais tias cov nplaum yuav tsum tau siv sij hawm ntev dua kom ntub dej ntawm cov khoom thiab "ntws" rau hauv qhov thiab grooves.Tsis tas li ntawd, qee cov neeg xav tias daim kab xev tsuas yog daim kab xev uas muaj cov kua nplaum.Cov lus no tsis yog lawm, vim hais tias cov kua nplaum yog kiag li nyob rau hauv daim ntawv ntawm cov kua, thiaj li mus cuag wettability, thiab nws cohesion thiab adhesion yuav tsum tau tos kom txog thaum nws tsuas yog manifested tom qab cua qhuav.Tsis tas li ntawd, cov kua nplaum nplaum yog ib qho txheej txheem irreversible.Thaum nws tawg lawm, nws tsis tuaj yeem rov ua dua.Thaum lub sij hawm tag nrho lub voj voog ntawm daim kab xev sib txuas, cov nplaum tuav cov viscoelasticity thiab yog ib nrab thim rov qab.txheej txheem.