Cov pos hniav yog dab tsi?Puas yog tib yam li yas?

1. Cov pos hniav yog dab tsi?

Cov pos hniav, raws li lub npe qhia, yog ib yam khoom uas tau muab rho tawm los ntawm cov nroj tsuag, uas feem ntau yog muab los ntawm cov ntoo.Cov khoom yog ib txwm nplaum thiab feem ntau yog siv los ua ib daim ntawv los yog xim.Hauv kev lag luam khoom noj khoom haus, cov pos hniav feem ntau yog siv los ua cov nplaum thiab cov coatings rau cov khoom noj xws li khoom qab zib, chocolate thiab zom cov pos hniav, uas tuaj yeem ua rau kom saj thiab ruaj khov ntawm cov khoom noj.Nyob rau tib lub sijhawm, cov pos hniav kuj tseem siv los ua cov khoom ntxiv thiab cov txheej txheem hauv cov tshuaj, nrog rau cov nplaum thiab cov coatings hauv ntau yam khoom siv hauv tsev thiab kho kom zoo nkauj.

2. Dab tsi yog yas?

Yas yog cov khoom siv hluavtaws organic polymer.Nws tuaj yeem muab rho tawm los ntawm fossil fuels xws li roj lossis nkev roj los ntawm ntau yam tshuaj lom neeg.Yas muaj cov yas zoo heev, yoog raws thiab rwb thaiv tsev yam ntxwv, yog li nws yog dav siv hauv kev tsim khoom ntawm ntau yam khoom yas, xws li cov hnab yas, cov kav dej yas, cov ntawv yas thiab lwm yam.

3. Cov pos hniav puas zoo ib yam li yas?

(1) Raws li kev muaj pes tsawg leeg thiab xwm, cov pos hniav thiab yas yog cov khoom sib txawv kiag li.Cov pos hniav yog cov organic polymer secreted los ntawm cov nroj tsuag, thiab cov yas yog cov organic polymer khoom tau los ntawm cov khoom siv dag zog.Lawv cov qauv molecular thiab tshuaj muaj zog sib txawv heev.

(2) Hais txog kev siv, cov pos hniav thiab yas kuj txawv heev.Cov pos hniav yog siv rau hauv cov nplaum, coatings thiab excipients nyob rau hauv cov zaub mov, tshuaj, tsev cov ntaub ntawv thiab kho kom zoo nkauj industries, thaum plastics yog tsuas yog siv nyob rau hauv tsim ntawm ntau yam khoom yas, xws li cov ntaub ntawv ntim, cov ntaub ntawv hauv tsev, cov khoom siv hluav taws xob thiab lwm yam.

Feem ntau, cov pos hniav thiab yas yog ob yam khoom sib txawv kiag li, lawv muaj qhov sib txawv ntawm cov khoom, khoom siv, thiab lwm yam.Yog li ntawd, thaum siv ob yam khoom no, nws yog ib qho tsim nyog yuav tsum xaiv txoj kev siv thiab cov khoom tsim nyog raws li lawv cov yam ntxwv thiab kev siv kom tsis txhob muaj kev ntxhov siab thiab siv tsis raug.