Kev Txhim Kho Keeb Kwm Ntawm Redispersible Latex Powder

Kev tshawb fawb ntawm cov roj hmab rov qab siv tau pib nrog I. hauv lub teb chaws Yelemees xyoo 1934 G. Farbenindus AC's polyvinyl acetate raws li redispersible latex hmoov thiab Japanese hmoov latex. Tom qab Tsov Rog Ntiaj Teb Zaum II, muaj kev tsis txaus ntawm kev ua haujlwm thiab kev tsim kho, yuam cov teb chaws Europe, tshwj xeeb tshaj yog lub teb chaws Yelemees, tau txais ntau yam khoom siv hauv tsev los txhim kho kev tsim kho. Thaum xyoo 1950s, Lub teb chaws Yelemees Hirst thiab Wacker cov tuam txhab tshuaj tau pib tsim cov khoom lag luam ntawm cov hmoov latex redispersible. Nyob rau lub sijhawm ntawd, cov hmoov latex redispersible yog feem ntau ntawm polyvinyl acetate hom, feem ntau yog siv rau woodworking kua nplaum, phab ntsa primer, thiab cement-based phab ntsa cov ntaub ntawv. Txawm li cas los xij, vim tias qhov kub thiab txias tsawg kawg nkaus, cov dej tsis zoo, thiab alkali tsis kam ntawm PVAc nplaum hmoov, nws txoj kev siv yog txwv heev.
Nrog rau kev ua tiav kev lag luam ntawm VAE lotion, VA / VeoVa thiab lwm yam tshuaj pleev ib ce, redispersible emulsion hmoov nrog qhov tsawg kawg nkaus zaj duab xis tsim kub ntawm 0 degree, dej tsis kam thiab alkali tsis kam yog tsim nyob rau hauv 1960s. Tom qab ntawd, nws daim ntawv thov tau nthuav dav hauv Tebchaws Europe, thiab nws daim ntawv thov tau maj mam nthuav mus rau ntau yam qauv thiab tsis yog cov qauv tsim cov nplaum, qhuav sib xyaw mortar hloov kho, phab ntsa rwb thaiv tsev thiab xov tshuab, phab ntsa leveling nplaum thiab sealing plaster, hmoov txheej, thiab lub tsev putty. .