Cov hmoov polymer uas tawg tau dua (RDP) yog cov khoom sib xyaw ua ke ntawm cov polymers thiab cov khoom ntxiv uas siv dav hauv cov ntaub ntawv siv hauv kev tsim kho, tshwj xeeb tshaj yog hauv kev tsim cov mortars qhuav. Cov hmoov no ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo thiab cov yam ntxwv ntawm ntau yam ntaub ntawv siv hauv kev tsim kho xws li cov nplaum rau pobzeb, cov grouts, cov tshuaj sib xyaw ua ke thiab cov cementitious plasters.
Cov khoom tseem ceeb:
Lub hauv paus polymer:
Ethylene vinyl acetate (EVA): EVA copolymer feem ntau siv hauv RDP vim nws cov khoom zoo heev rau kev tsim cov zaj duab xis, kev nplaum, thiab kev ywj pheej. Cov ntsiab lus vinyl acetate hauv copolymer tuaj yeem hloov kho kom hloov cov yam ntxwv ntawm cov polymer.
Vinyl Acetate piv rau Ethylene Carbonate: Nyob ntawm seb qhov yuav tsum tau ua ntawm daim ntawv thov, cov chaw tsim khoom siv tau ethylene carbonate es tsis txhob siv vinyl acetate. Ethylene carbonate tau txhim kho kev tiv thaiv dej thiab kev nplaum hauv cov huab cua noo.
Acrylics: Cov acrylic polymers, suav nrog cov acrylics ntshiab lossis copolymers, yog siv rau lawv qhov kev tiv taus huab cua zoo heev, ruaj khov, thiab hloov pauv tau yooj yim. Lawv paub tias muab kev nplaum zoo heev rau ntau yam substrates.
Kev tiv thaiv colloid:
Hydroxypropyl methylcellulose (HPMC): HPMC yog ib qho colloid tiv thaiv uas feem ntau siv hauv RDP. Nws txhim kho qhov kev tawg ntawm cov polymer me me thiab txhim kho cov yam ntxwv ntawm cov hmoov.
Cawv Polyvinyl (PVA): PVA yog lwm yam colloid tiv thaiv uas pab txhawb kev ruaj khov thiab kev sib kis ntawm cov polymer me me. Nws kuj tseem ua lub luag haujlwm hauv kev tswj qhov viscosity ntawm cov hmoov.
Cov khoom yas:
Dibutyl Phthalate (DBP): DBP yog ib qho piv txwv ntawm cov tshuaj plasticizer uas feem ntau ntxiv rau RDP los txhim kho kev ywj pheej thiab kev ua haujlwm tau zoo. Nws pab txo qhov kub hloov pauv iav ntawm cov polymer, ua rau nws ywj pheej dua.
cov khoom sau:
Calcium Carbonate: Cov khoom sau xws li calcium carbonate tuaj yeem ntxiv los txhim kho cov hmoov ntau thiab muab txoj hauv kev pheej yig los kho cov khoom xws li kev ntxhib los mos, porosity thiab opacity.
Cov tshuaj stabilizer thiab antioxidants:
Cov Stabilizers: Cov no yog siv los tiv thaiv kev puas tsuaj ntawm cov polymer thaum lub sijhawm khaws cia thiab ua tiav.
Cov tshuaj antioxidants: Cov tshuaj antioxidants tiv thaiv cov polymer los ntawm kev puas tsuaj oxidative, ua kom lub neej ntev ntawm RDP.
Cov haujlwm ntawm txhua feem:
Lub hauv paus polymer: Muab cov khoom ua zaj duab xis, kev nplaum, kev ywj pheej thiab lub zog kho tshuab rau cov khoom kawg.
Kev tiv thaiv colloid: Txhim kho qhov rov ua kom tawg, ruaj khov thiab kev tawg ntawm cov polymer me me.
Plasticizer: Txhim kho kev ywj pheej thiab kev ua haujlwm.
Cov khoom sau: Kho cov khoom xws li kev ntxhib los mos, porosity, thiab opacity.
Cov tshuaj ruaj khov thiab cov tshuaj antioxidants: Tiv thaiv kev puas tsuaj ntawm cov polymer thaum lub sijhawm khaws cia thiab ua tiav.
xaus lus:
Cov hmoov polymer uas tawg tau dua tshiab (RDP) yog ib qho khoom xyaw tseem ceeb thiab siv tau ntau yam hauv cov ntaub ntawv siv hauv tsev niaj hnub no. Nws cov tshuaj lom neeg muaj pes tsawg leeg, suav nrog cov polymers xws li EVA lossis acrylic resins, cov colloids tiv thaiv, cov yas ua kom yas, cov khoom sau, cov khoom ruaj khov thiab cov tshuaj antioxidants, tau tsim los kom ua tau raws li qhov xav tau tshwj xeeb ntawm txhua daim ntawv thov. Kev sib xyaw ua ke ntawm cov khoom no pab txhim kho cov hmoov tawg dua tshiab, lub zog sib txuas, kev ywj pheej thiab kev ua tau zoo hauv cov qauv sib xyaw qhuav.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-18-2023