VAE Hmoov Redispersible Polymer Hmoov CAS No.24937-78-8 rau Kev Tsim Kho Drymix Mortar

Thaum ntxiv dej rau hauv cov khoom sib xyaw qhuav, covVAE coCov hmoov polymer ua ib qho kev sib kis thiab tsim ib zaj duab xis thaum ziab. Cov zaj duab xis no txhawb nqa kev ywj pheej thiab kev nplaum.COV ADHES® Cov hmoov polymer uas tawg tau dua tshiab tau muab faib ua ntau yamkev hloov pauv tau yooj yimnrog adhesion tsawg, nruj nrog adhesion siab,nruab nrabnrog tus qauv lo rau(ob qho tib si adhesion thiab flexibility). Dej raug ntxiv rau qee cov hmoov kom muab cov yam ntxwv hydrophobic rau cov khoom.

Cov Khoom Siv Vinyl Acetate-Ethylene Polymers (VAE) --Cov hmoov no sib xyaw ua ke qhov yooj ywm ntawm ethylene thiab qhov lo ntawm vinyl acetate, ua rau muaj ntau yam txiaj ntsig kev lag luam thiab kev nyab xeeb yam tsis cuam tshuam rau kev ua haujlwm.
Lawv muaj ntau yam txiaj ntsig, suav nrog kev sib koom ua ke zoo heev, kev ywj pheej, zaj duab xis zoo hauv qhov kub qis thiab qhov kub hloov pauv iav. Lawv kuj qhia tau tias muaj kev sib txuas zoo rau qee cov khoom siv xws li yas thiab ntoo.

Ethylene-vinyl acetate-acrylate terpolymer-- Cov hmoov polymer no qhia tau tias muaj cov khoom nplaum zoo heev.Nws zaj duab xis muaj kev ywj pheej zoo, muaj zog plasticity, muaj zog hnav tsis kam thiab muaj peev xwm deformation.

Styrene-acrylate copolymer--Cov hmoov polymer muaj zog heevmuaj peev xwm tiv thaiv kev saponificationNws muaj kev nplaum zoo rau ntau yam khoom siv xws li polystyrene ua npuas ncauj, cov ntaub plaub ntxhuav, thiab lwm yam.

Cov hmoov polymer uas yaj tau dua muaj ntau daim ntawv thov thoob plaws ntau yam lag luam. Lawv siv dav hauv:

Cov nplaum rau kev tsim kho

·C1 C2Cov nplaum rau pobzeb

· Cov pob zeb sib koom ua ke

· Cov tshuaj pleev rau phab ntsa sab nraud

· Cov khoom siv khi ua vaj tse

· Cov khoom sib xyaw xws li cov pob qij txha kho cov pob zeb, cov ntaub thaiv qhov tawg, thiab cov ntawv thov cov ntaub thaiv dej.

Qhov kub hloov iav yog hais txog qhov kub uas cov polymers yuav raug hloov los ntawm lub xeev elastic mus rau lub xeev iav, qhia los ntawm Tg. Thaum qhov kub siab dua Tg, cov khoom siv zoo li roj hmab hauv tus cwj pwm thiab tsim cov elastic deformation hauv qab load; thaum qhov kub qis dua Tg, cov khoom siv zoo li iav hauv tus cwj pwm thiab yooj yim rau kev puas tsuaj brittle. Feem ntau yog tias Tg siab, qhov nyuaj tom qab tsim zaj duab xis kuj siab, rigidity zoo thiab tiv taus cua sov zoo; txwv tsis pub, yog tias Tg qis, qhov nyuaj tom qab tsim zaj duab xis txo qis, tab sis qhov elasticity thiab yooj ywm zoo.

Thaum npaj cov mortar qhuav sib xyaw, cov hmoov polymer uas tawg tau dua tshiab uas muaj cov nqi Tg sib txawv yuav tsum tau xaiv raws li lub hom phiaj, qhov chaw ua haujlwm thiab cov khoom siv hauv paus ntawm mortar. Piv txwv li, thaum npaj cov nplaum pobzeb thiab cov plastering mortar uas tiv taus tawg, ob yam tseem ceeb yuav tsum tau xav txog. Ib qho yog qhov nplaum siab; qhov thib ob yog qhov yooj ywm txaus thiab muaj peev xwm tiv taus kev hloov pauv. Yog li ntawd, xaiv cov hmoov polymer uas muaj Tg qis, kub qis thiab yooj ywm zoo.

Cov Lus Qhia: