Qhov kub hloov pauv iav (Tg) ntawm cov hmoov polymer uas tawg tau dua yog dab tsi?

Qhov kub hloov iav (Tg) ntawm cov hmoov polymer uas tawg tau dua tuaj yeem sib txawv nyob ntawm cov khoom sib xyaw thiab cov qauv polymer tshwj xeeb. Cov hmoov polymer uas tawg tau dua feem ntau yog tsim los ntawm ntau yam polymers, suav nrog ethylene-vinyl acetate (EVA), vinyl acetate-ethylene (VAE), polyvinyl cawv (PVA), acrylics, thiab lwm yam. Txhua polymer muaj nws tus kheej Tg tshwj xeeb, uas yog qhov kub uas cov polymer hloov los ntawm lub xeev iav lossis tawv mus rau lub xeev roj hmab lossis viscous.

Tus Tg ntawm cov hmoov polymer redispersible yog cuam tshuam los ntawm cov yam xws li:

1. Cov Khoom Siv Polymer: Cov polymers sib txawv muaj cov nqi Tg sib txawv. Piv txwv li, EVA feem ntau muaj ntau yam Tg ntawm kwv yees li -40 ° C txog -20 ° C, thaum VAE yuav muaj ntau yam Tg ntawm kwv yees li -15 ° C txog 5 ° C.
2. Cov Khoom Ntxiv: Kev suav nrog cov khoom ntxiv, xws li cov yas ua kom cov yas lossis cov tackifiers, tuaj yeem cuam tshuam rau Tg ntawm cov hmoov polymer uas rov tawg tau. Cov khoom ntxiv no tuaj yeem txo qis Tg thiab txhim kho kev ywj pheej lossis kev nplaum.
3. Qhov Loj thiab Morphology ntawm cov khoom me me: Qhov loj thiab morphology ntawm cov khoom me me ntawm cov hmoov polymer uas rov tawg tau kuj tseem tuaj yeem cuam tshuam rau lawv cov Tg. Cov khoom me me dua tuaj yeem ua rau muaj cov khoom siv thermal sib txawv piv rau cov khoom loj dua.
4. Cov Txheej Txheem Tsim Khoom: Cov txheej txheem tsim khoom siv los tsim cov hmoov polymer uas rov ua dua tshiab, suav nrog cov txheej txheem ziab thiab cov kauj ruam tom qab kho, tuaj yeem cuam tshuam rau Tg ntawm cov khoom kawg.

Vim yog cov yam no, tsis muaj ib qho nqi Tg rau txhua cov hmoov polymer uas rov ua dua tshiab. Hloov chaw, cov chaw tsim khoom feem ntau muab cov lus qhia thiab cov ntaub ntawv kev siv uas suav nrog cov ntaub ntawv hais txog cov khoom sib xyaw polymer, Tg ntau yam, thiab lwm yam khoom cuam tshuam ntawm lawv cov khoom. Cov neeg siv cov hmoov polymer uas rov ua dua tshiab yuav tsum sab laj cov ntaub ntawv no rau cov nqi Tg tshwj xeeb thiab lwm cov ntaub ntawv tseem ceeb ntsig txog lawv cov ntawv thov.