HEMC rau Putty Powder Resistant Base Cracking thiab Txheej Peeling

Putty hmoov yog siv dav hauv kev tsim kho thiab kho cov kab nrib pleb, qhov, thiab lwm yam tsis zoo hauv cov phab ntsa thiab qab nthab. Txawm li cas los xij, ib qho ntawm cov teeb meem ntawm kev ua hauj lwm nrog putty yog kom ntseeg tau tias nws adheres zoo rau saum npoo thiab tsis tawg los yog tev lub sij hawm. Qhov no yog qhov tseem ceeb tshwj xeeb thaum siv putty ua lub hauv paus rau kev pleev xim lossis lwm hom txheej txheej. Ib txoj hauv kev los txhim kho kev ua tau zoo ntawm putty hauv qhov no yog ntxiv Hydroxyethyl Methyl Cellulose (HEMC) rau qhov sib tov. Nyob rau hauv tsab xov xwm no, peb yuav tham txog cov txiaj ntsig ntawm kev siv HEMC hauv cov hmoov putty los tiv thaiv lub hauv paus tawg thiab txheej txheej txheej, nrog rau cov ntsiab lus xav txog thaum siv HEMC hauv daim ntawv thov no.

Cov txiaj ntsig ntawm Kev Siv HEMC hauv Putty Powder

Txhim kho Adhesion: Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm kev siv HEMC hauv cov hmoov putty yog txhim kho adhesion. HEMC yog cov dej-soluble polymer uas tuaj yeem pab cov putty ua kom zoo dua rau saum npoo. Qhov no yog qhov tseem ceeb tshwj xeeb tshaj yog thaum lub putty yog siv los ua lub hauv paus rau kev pleev xim lossis lwm hom txheej txheej. Txhim kho adhesion tuaj yeem pab txo qis qhov tshwm sim ntawm lub hauv paus tawg thiab txheej txheej txheej, uas tuaj yeem txhim kho tag nrho cov khoom zoo thiab kev ua haujlwm ntev ntawm cov khoom tiav.

Txo Shrinkage: HEMC kuj tuaj yeem pab txo qis hauv cov khoom ntim. Shrinkage tuaj yeem tshwm sim thaum lub putty dries thiab rub tawm ntawm qhov chaw, ua rau tawg thiab lwm yam kev puas tsuaj. Los ntawm kev txo qis qis, HEMC tuaj yeem pab xyuas kom meej tias cov putty tseem ruaj khov rau saum npoo, uas tuaj yeem pab txo qis qhov tshwm sim ntawm lub hauv paus tawg thiab txheej txheej.

Txhim Kho Kev Ua Haujlwm Zoo: HEMC tuaj yeem txhim kho kev ua haujlwm ntawm cov hmoov putty. Nws tuaj yeem pab txo cov viscosity ntawm cov khoom, ua kom yooj yim rau kev sib xyaw thiab siv. Qhov no tseem tuaj yeem pab txo qis cov dej xav tau hauv kev sib tov, uas tuaj yeem txhim kho tag nrho cov khoom zoo thiab ua haujlwm ntev ntawm cov khoom tiav.

Kev Ua Haujlwm Zoo: Ntxiv rau cov txiaj ntsig saum toj no, HEMC tuaj yeem txhim kho kev tsim kho tag nrho ntawm cov hmoov putty. Qhov no suav nrog cov khoom xws li compressive zog, tensile zog, thiab flexural zog. Los ntawm kev txhim kho cov khoom no, HEMC tuaj yeem pab xyuas kom meej tias lub putty muaj peev xwm tiv taus cov kev ntxhov siab thiab kev siv ntawm ib txwm siv, thiab nws tseem muaj lub suab zoo li lub sijhawm.

Tej yam yuav tsum tau xav txog thaum siv HEMC hauv Putty Powder

Hom HEMC: Muaj ntau ntau hom HEMC muaj, txhua tus muaj cov khoom sib txawv thiab cov yam ntxwv. Hom HEMC uas yog qhov zoo tshaj plaws rau cov hmoov putty yuav nyob ntawm seb yam xws li qhov xav tau sib xws, viscosity, thiab daim ntawv thov txheej txheem. Feem ntau, qhov qis mus rau nruab nrab viscosity HEMC raug pom zoo rau kev siv cov hmoov hmoov.

Cov txheej txheem sib xyaw: Txhawm rau kom ntseeg tau tias HEMC tau muab faib sib npaug thoob plaws hauv cov hmoov putty, nws yog ib qho tseem ceeb uas yuav tsum ua raws li cov txheej txheem sib xyaw kom haum. Qhov no feem ntau yog ntxiv HEMC rau hauv dej ua ntej thiab sib tov kom huv si ua ntej ntxiv cov hmoov. Nws yog ib qho tseem ceeb uas yuav tsum tau muab cov hmoov sib tov kom huv si kom paub meej tias HEMC sib npaug sib npaug thiab tsis muaj pob los yog clumps.

Tus nqi ntawm HEMC: Tus nqi ntawm HEMC yuav tsum tau ntxiv rau cov hmoov putty yuav nyob ntawm seb cov kev cai tshwj xeeb ntawm daim ntawv thov. Feem ntau, qhov concentration ntawm 0.2% mus rau 0.5% HEMC los ntawm qhov hnyav ntawm cov hmoov yog pom zoo rau kev ua kom pom kev zoo, txo qis, txhim kho kev ua haujlwm, thiab kev tsim kho zoo. Txawm li cas los xij, tus nqi ntawm HEMC xav tau yuav txawv nyob ntawm seb hom twg cov hmoov putty siv