Hauv kev lag luam niaj hnub thiab lub neej niaj hnub, cov nplaum thiab cov khoom siv txheej yog siv dav. Kev nkag siab tob ntawm lawv cov qauv yuav pab kom lawv nkag siab thiab daim ntawv thov.
Cov nplaum muaj peev xwm faib ua ntau hom xws li Polyisocyanate Adhesives raws li cov tshuaj tiv thaiv kab tiv thaiv. Polyisocyanate Cov nplaum muaj qhov hnyav me me, yog cov solible yooj yim hauv cov kuab tshuaj organic, tuaj yeem nkag mus rau hauv cov ntxig ntxeem, thiab ua kom muaj kev ua tiav. Cov pab pawg Isocyanate hauv nws cov qauv molecular yog cov nquag siv thiab tuaj yeem hnov mob nrog cov ntaub ntawv uas muaj cov khoom siv hluav taws xob nquag ua haujlwm; Cov pab pawg carbamate muab cov nplaum polarity thiab yooj yim, txhim kho qhov kev sib raug zoo ruaj khov, thiab ua rau nws hloov kho ntau yam.
Nyob rau hauv cov nqe lus ntawm cov ntaub ntawv txheej, nws cov qauv yog ze ze rau kev tsim cov nplaum. Hauv kev ua haujlwm rau kev ua haujlwm ntawm kev sib tshawb lus, cov nplaum muaj cov pab pawg muaj peev xwm sib raug zoo rau cov pab pawg sib txuam nrog cov pab pawg sib txawv, thiab cov nyiaj no yog cov muaj zog tshaj plaws thiab feem ntau ruaj. Cov tshuab hluav taws xob hauv hluav taws xob tawm cov ntsiab lus ntawm cov nplaum thiab cov hluav taws xob ua kom zoo nkauj, thiab lub zog hluav taws xob ua kom muaj tsawg, thiab siab xav tau siv los ua kom ze rau. Diffusion txoj kev xav qhia tau hais tias cov duab macromolecular segments ntawm cov nplaum muaj diffuse mus rau lwm sab ntawm lub interface los ua tus qauv network staggered.
Tsis tas li ntawd, cov lus nplaum ntawm cov nplaum tsis yog tsuas yog tus neeg sawv cev tseem ceeb, tab sis kuj suav nrog ntau yam ntxiv. Kev kho tus sawv cev tuaj yeem txhawb cov tshuaj lom neeg cov khoom siv nplaum kom ua kom nrawm kho; Cov neeg sawv cev nruj ua ke koom nrog kev kho cov tshuaj tiv thaiv los txhim kho lub zog cuam tshuam thiab cov tev ua ntej ntawm cov nplaum; Kev ua rau cov tshuaj tiv thaiv viscosity, thiab lwm yam. Sib txawv additives muab Adhesives cov khoom kom tau raws li cov kev xav tau ntawm kev thov sib txawv. Nkag siab cov qauv no thiab cov ntsiab cai yog qhov tseem ceeb rau kev siv hluav taws xob thiab kev txhim kho cov nplaum thiab txheej txheej.
