Redispersible polymers (RDP) hauv cov nplaum thiab kev sib txuas lus

1. Cov ntsiab lus
Redispersible polymers (RDP) yog cov chav kawm tseem ceeb ntawm cov quav ntxiv uas ua lub luag haujlwm tseem ceeb hauv kev tsim cov nplaum thiab cov kab xev. Cov polymers feem ntau yog cov khaub ncaws hmoov thiab tuaj yeem raug xa tawm hauv dej los ua cov khoom ruaj khov, yog li muab cov khoom siv tshwj xeeb. RDP yog dav siv hauv kev tsim kho, kev kho kom zoo nkauj hauv tsev thiab kev siv khoom. Nws lub luag haujlwm tseem ceeb muaj xws li kev txhim kho adhesion, txhim kho kom tau yooj yim, txhim kho cov dej ntws thiab txhim kho dej tsis kam.

2. Cov qauv thiab hom ntawm cov liab liab polymers
Cov neeg siv hluav taws xob liab qab polymers feem ntau yog tsim los ntawm ethylene-vinyl acetate copolymer (sbr) Tom qab tshuaj tsuag qhuav, lub noob muag tau rov ua cov emulsion tom qab ntxiv dej.

Cov kev ua tau zoo thiab kev thov ntawm RDP yog ze rau nws muaj pes tsawg leeg. Piv txwv li:

Eva: Nws muaj cov khoom sib kho zoo ntawm cov dej thiab cov dej tsis taus thiab siv tau rau hauv cov nplais nplaum phab ntsa thiab sab nrauv phab ntsa rwb thaiv tsev.
SBR: Kev hloov pauv tau zoo heev thiab hnav tsis kam, haum rau kev sib tw thiab cov txheej txheem elastic.
Vae: sib txuas cov txiaj ntsig ntawm Eva thiab SBR, nws yog dav siv nyob rau hauv ntau cov nplaum uas yuav tsum tau ua tau zoo.

3. Lub luag haujlwm hauv cov nplaum
Hauv cov qauv nplaum ua ke, RDP feem ntau yog siv los txhim kho kev sib raug zoo lub zog thiab hloov tau. Nws cov luag hauj lwm tshwj xeeb suav nrog:

3.1 Txhim Kho Kev Ua Haujlwm
RDP tuaj yeem txhim kho cov nplaum ntawm cov nplaum ntawm cov nplaum kom sib txawv, tshwj xeeb tshaj yog nyob rau porous thiab nqus dej. Piv txwv li, ntxiv RDP rau Pobzeb Cov nplaum tuaj yeem txhim kho nws txoj kev sib koom ua lub zog thiab dej tsis kam, yog li txuas ntxiv txoj haujlwm ntawm cov vuas.

3.2 Txhim Kho Txhim Kho
Yooj taus yog ib qho ntawm cov txuj ci ua tau zoo ntawm cov nplaum, tshwj xeeb tshaj yog thaum ua rau cov kev hloov pauv kub lossis hloov chaw. Qhov sib ntxiv ntawm RDP tuaj yeem muab cov nplaum zoo dua thiab txo qhov kev pheej hmoo ntawm kev tawg lossis tev. Qhov no yog qhov tshwj xeeb tshaj yog rau cov ntawv thov sab hauv tsev thiab sab nraum zoov, tshwj xeeb tshaj yog nyob rau thaj chaw nrog qhov sib txawv loj.

3.3 Txhim kho cov fluidity thiab kev tsim kho
RDP tuaj yeem txhim kho cov dej ntawm cov nplaum, ua rau lawv yooj yim rau kev thov thiab kho thaum lub sijhawm tsim kho. Zoo fluidity tsis tsuas yog txhim kho kev tsim kho kev ua haujlwm, tab sis kuj tseem ua kom muaj kev sib txuam ntawm cov nplaum, yog li txhim kho qhov ua tau zoo.

4. Lub luag haujlwm hauv kev foob
RDP kuj yog lub luag haujlwm tseem ceeb hauv kev foob cov qauv ntawm kev foob. Nws lub luag haujlwm tseem ceeb yog xav txog hauv cov hauv qab no:

4.1 Txhim Kho Cov Khoom Siv Sealing
RDP tuaj yeem tsim cov yeeb yaj kiab tawv polymer polymer ua yeeb yaj kiab hauv kev foob rau txhim kho cov cua nruj thiab dej nruj ntawm kev foob. Qhov no muaj ib qho cuam tshuam tseem ceeb hauv kev ua pob qij txha thiab kev lag luam saling, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig vaum.

4.2 Txhim Kho Huab Cua Kuj
Cov huab cua zoo tsis kam yog kev lav rau kev siv cov tes dej ntev. Qhov kev sib ntxiv ntawm RDP tuaj yeem txhim kho cov tshuab foob uas muaj kev tiv thaiv ib puag ncig xws li cov kev pab cuam ultraviolet thiab ozone, thiab ncua kev pabcuam lub neej ntawm kev foob.

4.3 muab elasticity thiab kev txhawb nqa
RDP tuaj yeem muab cov ntawv foob rau cov khoom siv zoo thiab kev rov qab los ntawm lub xeev lossis deformation ntawm substrate, zam kev tawg thiab poob tawm.

5. Kev Txiav Txim Siab hauv Tsim Qauv Tsim
Thaum siv RDP hauv cov nplaum thiab kev sib txuas lus, cov hauv qab no yuav tsum tau txiav txim siab:

5.1 Xaiv Kev RDP
Xaiv hom uas tsim nyog ntawm RDP raws li cov ntawv thov yuav tsum tau ua. Piv txwv li, rau cov nplaum uas yuav tsum muaj lub zog zoo, eva raws RDP tuaj yeem xaiv tau; Rau cov ferbants nrog siab qhov yuav tsum tau ua, sbr raws rdp tuaj yeem xaiv tau.

5.2 Tswj ntawm ntau npaum
Qhov ntau npaum li cas ntawm RDP ncaj qha cuam tshuam kev ua yeeb yam ntawm cov nplaum thiab cov xov xwm. Ntau dhau RDP yuav ua rau muaj cov nqi ntau dua, thaum lub sijhawm me me tsis tuaj yeem ua tiav cov nyhuv xav tau. Yog li ntawd, nws yog qhov tsim nyog tswj nws raws li kev xav tau tiag tiag thiab cov qauv.

5.3 Synergy nrog lwm cov khoom sib ntxiv
RDP feem ntau yog siv nrog lwm cov kev sib ntxiv (xws li thickeners, defoamers, mildew inhibitors, thiab lwm yam) kom ua kom tiav cov kev ua tau zoo ntawm cov qauv. Thaum tsim qauv tsim tawm, nws yog qhov tsim nyog yuav tsum tau txiav txim siab txog lub synergistic nyhuv ntawm txhua feem kom ntseeg tau tias cov khoom lag luam kawg yog qhov zoo tshaj plaws.

Cov neeg rov ua haujlwm thoob polymers muaj ntau yam ntawm daim ntawv thov tus nqi hauv cov nplaum thiab kev sib txuas lus. Los ntawm kev xaiv tsim nyog thiab siv RDP, kev ua yeeb yam ntawm cov nplaum thiab cov kab xev tuaj yeem txhim kho kom tau raws li cov kev xav tau ntawm cov kev thov sib txawv. Nyob rau yav tom ntej, nrog kev txhim kho kev thev naus laus zis thiab kev hloov pauv hauv kev lag luam, daim ntawv thov kev tiv thaiv ntawm RDP hauv cov khoom tshiab thiab kev tiv thaiv ib puag ncig yuav dav.