Yas yog cov khoom siv polymer. Lub phaus molecular ntawm cov khoom siv tshiab yog txo 30% hauv kev tshawb xav tom qab siv ib zaug, uas txhais tau hais tias ntau yam khoom ntawm cov khoom raug txo los ntawm 30%. Thaum cov khoom siv rov ua dua tshiab yog siv dua tshiab, qee qhov ntxiv yuav ntxiv, thiab ntau yam khoom yuav raug txhim kho. , Tab sis tseem tsis tuaj yeem sib sau nrog cov ntaub ntawv tshiab. Kuv paub qhov txawv ntawm dab tsi yog tsim nrog cov ntaub ntawv tshiab thiab cov tsim nrog cov khoom siv rov ua dua tshiab, cov qauv:
1. Saib lub ntsej muag ntawm lub ntsej muag, cov nplaim ntsej muag, lub ntsej muag yog qhov zoo, lub ntsej muag zoo nkauj yog tsim los ntawm cov khoom siv tshiab, thiab hloov siab dua.
2. Ntsuas ntsuas qhov ntsuas kev ua haujlwm, uas zoo ib yam li cov ntsuas ntawm lub cev lub zog rau cov khoom siv tshiab, thiab rov hais txog cov khoom siv rov ua dua tshiab.
Txhaum ntawm cov ntawv me me, cov yas siv rov qab muaj qhov tsis zoo, qhov saum npoo ntawm cov pob yog npub, qhov loj me tsis sib luag, thiab lawv muaj qhov tsis huv, thiab lawv feem ntau xim lossis grey; cov khoom siv tshiab tau zoo gloss, qhov saum npoo ntawm tus nplaim yog du, qhov loj me yog qhov tsis xws luag, tsis muaj ntawv xov xwm, thiab lawv feem ntau tsis muaj xim lossis milky dawb. Cov khoom tshiab yog qhov kaj nyob rau hauv cov xim thiab cov khoom qub yog qhov tsaus xim.
