Kev tsim kho kev lag luam tau hloov pauv los ntawm kev siv ntau yam khoom ntxiv hauv kev tsim cov khoom siv hauv tsev xws li pob zeb, cement thiab mortar.Ib qho ntxiv yog hydroxypropyl starch ether, feem ntau hu ua HPS, uas yog siv los hloov cov khoom ntawm mortar.Hauv kab lus no, peb yuav tham txog lub luag haujlwm ntawm hydroxypropyl starch ether hauv mortar.
Hydroxypropyl starch ether yog hmoov dawb los yog lub teeb daj, soluble hauv dej.Nws yog muab rho tawm los ntawm pob kws los ntawm kev hloov kho tshuaj uas muaj etherification thiab hydroxypropylation.Lub resulting additive tau txhim kho dej tuav, processability thiab stability, ua rau nws zoo tagnrho rau siv nyob rau hauv mortars.
Mortar yog qhov sib xyaw ntawm cov xuab zeb, cement, dej thiab cov khoom siv ntxiv los tuav cov ntaub ntawv hauv tsev ua ke.Muaj ntau yam txiaj ntsig rau kev ntxiv hydroxypropyl starch ether rau mortar.Ua ntej, nws txhim kho cov txheej txheem ntawm kev sib tov.Kev ua haujlwm tau hais txog qhov yooj yim uas cov mortar sib xyaw, tso thiab ua tiav.Nrog rau qhov sib ntxiv ntawm HPS, cov tshuaj khib nyiab tau yooj yim dua, ua rau muaj kev tiv thaiv zoo dua thiab ua kom tiav.Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas muaj kev zoo nkauj yog qhov tseem ceeb, xws li kho kom zoo nkauj tiav.
Thib ob, hydroxypropyl starch ether txhim kho cov dej khaws cia ntawm cov tshuaj khib nyiab, yog li txo cov dej poob thaum lub sijhawm kho.Dej yog ib feem tseem ceeb ntawm qhov pib qhov chaw thiab hardening ntawm mortar.Yog li ntawd, khaws cov dej hauv qhov sib tov kom ntev dua txhim kho cov khoom siv kho mob ntawm cov tshuaj khib nyiab.Qhov no kuj ua rau txo tus naj npawb ntawm cov kab nrib pleb thiab nce nws cov kav ntev.
Thib peb, HPS txhim kho cov khoom ruaj khov ntawm cov mortar.Nws txo qhov kev sib cais ntawm qhov sib tov, uas tshwm sim vim qhov sib txawv ntawm qhov loj thiab qhov ntom ntawm cov khoom.Qhov no tso cai rau qhov sib xyaw kom ruaj khov rau lub sijhawm ntev yam tsis muaj kev pheej hmoo ntawm kev teeb tsa lossis coagulation.Qhov no feature yog tshwj xeeb tshaj yog pab tau nyob rau hauv qhov sib tov yuav tsum tau thauj los yog khaws cia rau lub sij hawm ntev ua ntej siv.
Hauv kev xaus, hydroxypropyl starch ether yog ib qho tseem ceeb additive uas yuav siv tau los txhim kho cov neeg kho tshuab thiab aesthetic zog ntawm mortars.Nws txhim kho cov txheej txheem, dej tuav thiab ruaj khov, ua rau nws zoo tagnrho rau cov kws tsim khoom thiab cov kws tsim qauv.Los ntawm kev txo cov dej poob thaum kho, nws ua rau kom cov kav ntev thiab lub zog ntawm cov mortar kho, ua rau nws yog qhov kev xaiv tsim nyog rau kev siv cov khoom siv thauj khoom.Tsis tas li ntawd, cov txheej txheem ntawm kev sib xyaw yog txhim kho thiab cov khoom kawg yog qhov txaus nyiam dua.Yog li ntawd, kev siv hydroxypropyl starch ethers nyob rau hauv mortar ntau lawm yog ib qho kev xaiv siv tau rau cov tuam txhab nrhiav kev txhim kho qhov zoo ntawm lawv cov khoom kawg.
