Kev qhia pib ntawm cov nplaum

Apr 14, 2021

Tso lus

Adhesion (adhesion): yog hais txog lub xeev uas ob thaj chaw sib koom ua ke los ntawm kev siv tshuaj, khoom siv zog lub cev lossis ob qho tib si.

Cov nplaum yuav tsum tau ua ntej rau ntawm cov npoo. Qhov no yog vim muaj kev nplaum ntawm ob qib, uas tau los ntawm theem nrab cov xaim hluav taws xob los yog thawj lub zog nyiaj.

Kev sib koom ua ke: lub xeev uas cov lus hais nyob rau hauv ib qho kev sib koom ua ke tau sib koom ua ke los ntawm thawj qhov muaj txiaj ntsig nyiaj sib khi (nrog rau ionic bond, covalent bond, kev sib koom tes nyiaj txiag, hlau ntawv, thiab lwm yam) thiab cov quab yuam sib txuas ntxiv (suav nrog van der Waals force, hydrogen bond )). Kev sib xyaw ntawm cov nplaum yog muaj feem xyuam nrog rau quab yuam intermolecular, txheeb ze cov roj molecular, qhov kev sib txuas ntawm kev sib txuas, crystallization thiab molecular entanglement.

Adhesive yuav tsum:

1: Tsis hais txog lub xeev, nws yuav tsum ua kua thaum ua ntawv thov.

2: Qhov txheej npoo ob sab tuaj yeem sib kis tau tag nrho thiab ntub dej tag nrho.

3: Nws yuav tsum muaj peev xwm hloov pauv cov kua los ua qhov chaw ruaj khov lossis gel hauv qee qhov kev tsim cov txheej txheem kua nplaum thiab ruaj khov.

4: Nws yuav tsum muaj qee qhov muaj zog tom qab kho tau zoo. Nws tuaj yeem txuas kev sib cav kom zoo, hloov kev ntxhov siab, thiab tiv thaiv kev puas tsuaj.

5: Nws tuaj yeem tiv taus kub siab tshaj 0 ° C thiab sawv nres lub sijhawm ntsuas ntawm qee lub sijhawm.

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