Nyob rau tam sim no, waterploaf txheej feem ntau tau faib raws li hom txheej thiab lub ntsiab ntawm txheej cov yeeb yaj kiab-tsim cov tshuaj yeeb yaj kiab
1. Kev faib tawm raws li cov kua ntawm cov txheej txheej
Raws li cov kua ntawm cov kua pleev, cov kua dej pleev tuaj yeem faib ua peb hom: kuab-raws li, dej raws li, thiab ua kom muaj kev cuam tshuam.
1. Cov khoom siv uas tsis muaj roj av ntawm cov txheej txheej no, cov khoom siv polymer, cov yeeb yaj kiab loj ua cov yeeb yaj kiab loj ua cov tshuaj organic ua kom tiav rau kev daws teeb meem. Cov khoom siv polymer yog khaws cia rau hauv kev daws teeb meem (txheej) hauv lub xeev molecular;
Cov txheej txheej no muaj cov yam ntxwv hauv qab no: Los ntawm kev ua yeeb yaj kiab hauv qab no: Kev ua yeeb yaj kiab yog tsim los ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm cov txheej txheem ntawm polymer molecular; Cov txheej txheej dries sai sai, zaj duab xis yog nyias thiab ntom; Cov txheej txheem ntau lawm yog qhov yooj yim, thiab txheej muaj cov khoom muaj kev ruaj khov zoo; Nws yog cov nplaim taws, tawg, thiab lom, thiab kev nyab xeeb yuav tsum tau them sai sai rau thaum lub sijhawm ntau lawm, cia, thiab siv; Vim kev nrawm nrawm ntawm cov kuab tshuaj, nws muaj zog ib puag ncig thaum lub sijhawm kev tsim kho.
2. Dej-ua cov txheej txheej dej lim dej no siv cov khoom siv tshuaj pleev ib ce uas yog cov yeeb yaj kiab loj (tsis yog ua kom muaj zog), tsim cov khoom siv molecular), tsim cov txheej txheem emulsion) zoo li qub.
Hom txheej no muaj cov yam ntxwv hauv qab no: Kev ua yeeb yaj kiab tshwm sim los ntawm evaporation dej, thiab cov khoom seem, tiv tauj, thiab deformation; Lub txheej dries maj mam, thiab qhov ntom ntawm zaj duab xis tsim ib zaug yog qis dua li ntawm cov kuab tshuaj pleev, thiab feem ntau tsis haum rau kev tsim kho hauv qab 5 degree; Lub sijhawm khaws cia feem ntau tsis tshaj ib nrab xyoo; Nws tuaj yeem tsim ntawm ib qho me ntsis ntub dej puag; Nws yog cov tsis muaj tshuaj lom thiab tsis muaj ntsej muag, thiab muaj kev nyab xeeb rau cov khoom lag luam, khw muag khoom, thauj khoom, thiab siv; Nws yog ib qho yooj yim rau kev khiav lag luam thiab tsis yog qhov tsis zoo ib puag ncig; Tus nqi tsim yog tsawg.
3. Resive Waterproof Txheej
Hauv cov txheej txheej no, cov khoom siv polymer raws li cov yeeb yaj kiab tseem ceeb-tsim cov tshuaj muaj nyob rau hauv daim ntawv ntawm prepolymer kua. Feem ntau ntawm cov txheej txheej yog tsim ntawm ob feem lossis ib feem, thiab yuav luag tsis muaj kuab.
Cov txheej txheej no muaj cov yam ntxwv hauv qab no: Cov kua polymer Pregolymer undergoes cov tshuaj lom neeg los ua ib qho khoom siv (ua yeeb yaj kiab); Nws tuaj yeem ua cov txheej xim tuab ib zaug, tsis muaj shrinkage, thiab zaj duab xis txheej yog ntom; ob-feem tivthaiv yuav tsum muaj qhov tseeb 1: 2 cov ntaub ntawv rau ntawm qhov chaw; Stirring tusyees los xyuas kom zoo; Tus nqi yog tus nqi kim.
Polyurethane Waterproof Txheej txheej cov khoom siv waterproof yog tar asphalt thiab roj av tau hnov, uas tau pib hauv Tebchaws Europe thiab tau qhia rau kuv lub tebchaws hauv 1920s. Nrog kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, cov khoom siv tsis tau tsav tau raug tsim sai. Hauv xyoo 1970, ntau yam kev tiv thaiv ntau yam kev tiv thaiv kev kub ceev tau los ib qho ntxiv. Kuv lub teb chaws cov ntaub ntawv tsis muaj dej tau nce qib peb qhov loj: yob cov ntaub ntawv, cov ntaub ntawv yas, thiab cov khoom siv sealing.
Khoom siv hluav taws xob polymer waterproof yog cov khoom siv dej los npaj nrog roj hmab los ua cov yeeb yaj kiab loj ua cov yeeb yaj kiab thiab lwm cov ntaub ntawv pov thawj.
Muaj ntau ntau hom hluavtaws molecular waterproof cov ntaub ntawv, xws li polyurethane, acrylic acid thiab lawv cov tov khoom sib xyaw.
