Hydroxypropylmethylcellulose (HPMC) yog ntau yam polymer uas feem ntau siv nyob rau hauv kev tsim kho kev lag luam raws li mortar admixture. Ua ke nrog lwm cov khoom xyaw tseem ceeb, HPMC tuaj yeem txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm cov mortars. Kab lus no tham txog qee qhov txiaj ntsig ntawm HPMC hauv cov tshuaj khib nyiab nrog rau kev ua haujlwm tau zoo, txhim kho adhesion thiab tuav dej zoo dua.
1. Txhim kho kev ua haujlwm
Ib qho txiaj ntsig tseem ceeb ntawm HPMC hauv cov tshuaj khib nyiab yog nws lub peev xwm los txhim kho kev ua haujlwm. Kev ua haujlwm yog ib qho tseem ceeb ntawm mortar vim nws hais txog qhov yooj yim uas nws tuaj yeem sib xyaw, muab tso thiab ua tiav. HPMC ua raws li cov thickener thiab dispersant, uas txhais tau hais tias nws txhim kho qhov sib xws thiab plasticity ntawm cov tshuaj khib sib tov.
Thaum HPMC ntxiv rau qhov sib tov, lub mortar ua kom khov thiab yooj yim rau cov duab. Nws kuj ua rau tsis tshua muaj kev sib cais, kev sib cais ntawm cov khib nyiab thiab kua hauv cov tshuaj khib sib tov. Raws li qhov tshwm sim, mortars uas muaj HPMC yog qhov yooj yim los tuav thiab tuaj yeem siv tau yooj yim dua thiab ua haujlwm tau zoo, ua kom cov khoom tsim tau zoo thiab tag nrho kev ua haujlwm zoo.
2. Txhim kho adhesion
Lwm qhov txiaj ntsig ntawm HPMC hauv mortar admixtures yog tias nws txhim kho adhesion. Adhesion yog hais txog lub peev xwm ntawm mortar kom ua raws li qhov chaw xws li cib, pob zeb lossis pob zeb. HPMC pab txhawb kev tsim daim ntawv cog lus los ntawm kev ua yeeb yaj kiab yav dhau los. Qhov no txhais tau tias nws tsim ib txheej nyias ntawm qhov chaw, tsim kom muaj ib qho zoo dua substrate rau mortar kom ua raws li.
Cov cuab yeej ua yeeb yaj kiab ntawm HPMC yog qhov tshwj xeeb tshaj yog qhov uas qhov chaw tsis sib luag lossis ntxeem tau. Yog tsis muaj HPMC, lub mortar yuav tsis ua raws li qhov zoo thiab tuaj yeem flake tawm dhau sijhawm. Txawm li cas los xij, thaum HPMC ntxiv rau qhov sib xyaw, cov tshuaj khib nyiab ua kom zoo dua rau saum npoo, muab kev sib koom ua ke zoo dua thiab txhim kho tag nrho cov kav ntev.
3. Kev tuav dej zoo dua
HPMC tseem paub txog nws cov khoom tuav dej, uas yog lwm qhov zoo ntawm cov tshuaj khib nyiab. Kev tuav dej yog hais txog lub peev xwm ntawm mortar khaws nws cov ntsiab lus dej txawm tias nyob rau hauv qhuav lossis kub. Qhov no yog ib qho tseem ceeb vim hais tias yog lub mortar dries sai heev, nws poob nws lub zog thiab nyhav tawg los yog crumble.
HPMC pab khaws cov dej noo hauv cov tshuaj khib nyiab, kom nws nyob twj ywm noo thiab pliable rau lub sijhawm ntev. Qhov no tso cai rau lub mortar teem thiab harden kom zoo, txhim kho kev ruaj ntseg thiab txo qhov kev pheej hmoo ntawm qhov tsis xws luag. Kev tuav dej zoo dua kuj txhais tau hais tias cov mortar tuaj yeem siv rau hauv qhov dav ntawm qhov kub thiab txias, ua kom nws muaj peev xwm ntawm qhov chaw tsim kho.
4. Tus nqi siab ua haujlwm
Thaum kawg, kev siv HPMC hauv mortar admixtures yog tus nqi zoo. HPMC yog cov khoom siv pheej yig dua piv rau lwm cov khoom siv ntxiv xws li polymers lossis cov ntaub ntawv cementitious. Nws yog yooj yim muaj thiab dav siv nyob rau hauv kev tsim kho kev lag luam. Tsis tas li ntawd, HPMC muaj txiaj ntsig zoo ntawm cov koob tshuaj me me, uas txhais tau hais tias txawm tias me me tuaj yeem txhim kho cov khoom ntawm mortars.
Los ntawm kev siv HPMC hauv mortar admixtures, cov neeg cog lus tuaj yeem txuag nyiaj thaum tseem ua tiav cov txiaj ntsig zoo. HPMC tseem tuaj yeem siv los hloov lwm yam khoom siv kim dua, txo cov nqi ntxiv yam tsis muaj kev cuam tshuam kev ua haujlwm.
nyob rau hauv xaus
HPMC yog ib qho tseem ceeb mortar admixture additive nrog ntau yam zoo. Nws txhim khu kev ua tau zoo, txhim kho adhesion, muab cov dej khaws cia zoo dua, thiab muaj txiaj ntsig zoo. Nrog HPMC, lub mortar ua tau yooj yim dua, tawv dua thiab ruaj khov dua, ua rau cov khoom tiav tiav. Yog li ntawd, HPMC tuaj yeem yog cov cuab yeej tseem ceeb hauv kev tsim kho kev lag luam thiab kev xaiv muaj kev nyab xeeb thiab txhim khu kev qha rau cov neeg cog lus thiab cov neeg tsim khoom.
Post lub sij hawm: Aug-23-2023