Redispersible looj hmoov (RDP)yog cov khoom siv ntxiv rau hauv kev tsim kho kev tsim kho, cov nplaum, cov nplaum, cov nplais pob thiab lwm thaj chaw. Nws lub luag haujlwm tseem ceeb yog rau redisperse mus rau cov kua yas tom qab cov dej uas muaj zog los txhim kho cov nplaum, huab cua tiv thaiv thiab lub zog kho zog thiab tshuab lub zog ntawm cov khoom siv. Txawm li cas los xij, kev ua tau zoo ntawm RDP nyob rau hauv ntau qhov kev hloov pauv sib txawv cuam tshuam los ntawm ntau yam.
1. Cov yam ntxwv yooj yim ntawm Redispersible looj hmoov
Redispersible looj hmoov yog cov polymer uas hloov dua siab tshiab los ntawm emulsion polymer rau hauv cov hmoov thaum lub sijhawm ua kom qhuav. Cov khoom xyaw uas muaj polyvinyl cawv (pva), psstyrene (paaacrylic) Qhov no ua rau nws siv dav hauv cov khoom lag luam xws li txheej nplaum, cov nplaum, txhim kho cov ris tsho tiv no, elasticity thiab huab cua tsis kam ntawm cov ntaub ntawv no.
2. Cov nyhuv ntawm qhov kub ntawm RDP kev ua haujlwm
Qhov kub yog qhov tseem ceeb cuam tshuam rau kev ua tau zoo ntawm recispersible looj hmoov. Qhov kub hloov yuav ua rau hloov pauv ntawm lub cev thiab tshuaj lom neeg ntawm cov hmoov yas, uas nyob rau hauv Lasesion, recispersibility thiab durability.
Kev kub siab ib puag ncig: nyob rau hauv cov kev mob siab, RDP yuav ntsib cov teeb meem ntawm kev nrawm nrawm ntawm dej, uas yuav cuam tshuam rau recispersibility ntawm looj. Thaum qhov ntsuas kub dhau lawm, cov hmoov yas yuav tsis ua kom tiav dua tom qab ntxiv cov dej, ua cov lumps, yog li txo nws cov nplaum. Ib qho ntxiv, qhov kub siab kuj tseem yuav ua rau qee cov hmoov polymer nyob rau hauv cov hmoov yas looj roj hmab nyob rau hauv cov hmoov av looj, yog li cuam tshuam nws ruaj khov.
Ib puag ncig kub tsawg: nyob rau hauv cov kev mob kub tsawg, cov khoom siv tau ntawm cov dej yuav cuam tshuam rau qhov dispersibility ntawm looj cov hmoov. RDP xav kom tau tawg nyob rau hauv lub xub ntiag dej. Cov dej khov ntawm qhov kub tsawg yuav ua rau cov hmoov yas kom tsis muaj peev xwm rov qab los yog nws cov nplaum ua kom tsawg. Nyob rau hauv ib puag ncig txias, zaj duab xis tsim los ntawm RDP tej zaum yuav tsis yooj yim thiab muaj kev tawg tsis zoo. Ib qho ntxiv, kev ua haujlwm hauv qhov chaw ua haujlwm hauv qhov chaw kub tsawg dua yog qhov nyuaj dua, uas tuaj yeem ua rau kev ua tau zoo thaum lub sijhawm tsim kho.
3. Cov txiaj ntsig ntawm cov av noo ntawm kev ua tau zoo ntawm RDP
Vaum yog lwm qhov chaw ib puag ncig uas muaj qhov cuam tshuam tseem ceeb ntawm cov hmoov liab redispersible. Siab dhau los yog qis dhau avity yuav cuam tshuam kev ua haujlwm ntawm cov hmoov yas latex.
Kev vaum ib puag ncig: nyob rau hauv ib puag ncig nrog cov av noo, ntau dhau ntawm cov dej yuav ua rau cov dej sib txawv hauv cov kua txiv hmab txiv ntoo kom dhau, cuam tshuam nws recispersibility. Ntau cov dej noo ntau dhau yuav ua rau nws nyuaj rau cov hmoov yas los ua cov yeeb yaj kiab zoo rau ntawm cov txheej txheem, ua rau muaj kev txo qis hauv cov khoom. Tsis tas li ntawd, thaum tsim nyob rau hauv lub siab av noo ib puag ncig, dej hauv lub cement lossis tshuaj khib nyiab maj mam ua rau maj mam, thiab yog li cuam tshuam nws cov nyhuv yas.
Tsawg av noo ib puag ncig: nyob rau hauv ib qho chaw noo nyob ib puag ncig, qhov recispersibility ntawm cov kua dej yas yuav zoo dua vim tias cov dej yaj sai. Txawm li cas los xij, nyob rau hauv qhov chaw noo ib puag ncig, RDP yog nquag ua rau lub zog tsis muaj zog ntawm cov hmoov av, tshwj xeeb yog qhov tsis txaus, ua rau txheej txheej kom poob lossis tev yooj yim.
4. Cov nyhuv ntawm nag lossis daus ntawm kev ua haujlwm ntawm RDP
Cov nag lossis daus tseem muaj qee yam cuam tshuam ntawm kev ua yeeb yam ntawm Redispersible looj hmoov. Nag lossis daus tsuas yog cuam tshuam rau kev siv cov hmoov looj xwb thaum kev tsim kho, tshwj xeeb tshaj yog thaum siv nyob rau hauv ib puag ncig ib puag ncig.
Cov nyhuv ntawm nag lossis daus: hauv cov cheeb tsam nrog cov nag lossis nag lossis daus, dej tsis kam thiab impermabeabability ntawm RDP tshwj xeeb yog ib qho tseem ceeb. Yog hais tias cov kua dej looj hmoov tsis muaj cov khoom xyaw txaus, nws yuav poob nws cov khoom sib txuas lus nrog cov av noo lossis ntau zaus nag lossis daus. Tsis tas li, kev mob sai sai tej zaum yuav cuam tshuam rau kev kho cov txheej ceev ntawm cov txheej, yog li ntawd lub zog tsis muaj zog, ua rau muaj kev lom zem tag nrho cov txheej txheem ntev.
Kev cuam tshuam ntawm cov nag lossis daus muaj tshwm sim thaum lub sijhawm tsim kho, thiab txawm tias qee cov ntaub qhwv tau ua ke nrog cov txheej txheem lossis ploj, yog li cuam tshuam rau cov khoom tsim kho.
5. Cov ntsiab lus ntawm kev nyab xeeb hloov chaw
Cov kev ua tau zoo ntawm redispersible looj cov hmoov nyob rau hauv cov kev hloov pauv sib txawv yog ib qho nyuaj system uas cuam tshuam nrog ntau li cov cua sov, cov av noo, thiab nag lossis daus. Feem ntau, hauv qhov kub thiab cua sov ib puag ncig, RDP ua tau zoo thiab ua rau muaj kev pheej hmoo ua tsis tiav; Nyob rau hauv qhov ntsuas kub tsawg thiab cov av noo ib puag ncig, kev ua haujlwm ntawm RDP tsis yog ntxiv rau cov mis lossis hloov kho cov txheej txheem kev tsim kho kom haum rau cov txheej txheem ib puag ncig. Rau thaj chaw uas muaj dej nag hnyav, cov dej tsis kam thiab tsis tsim nyog ntawm RDP yog qhov tsim nyog los xaiv cov qauv tsim nyog kom ntseeg tau tias nws qhov chaw ruaj khov hauv ib puag ncig noo.
Hauv cov ntawv thov tiag tiag, cov tuam ntxhab feem ntau ua kom pom cov mis thiab sivRdpRaws li cov huab cua zoo ntawm thaj chaw sib txawv los xyuas kom meej tias nws tuaj yeem tswj tau ruaj khov nyob rau hauv ntau qhov chaw. Yog li ntawd, thaum xaiv RDP, cov yam ntxwv huab cua tshwj xeeb yuav tsum tau txiav txim siab los ua kom lub sijhawm ntev ruaj khov thiab siv cov nyhuv ntawm cov khoom.
Lub Sijhawm Post: Jan-27-2025