Putty yog ib yam khoom siv kho kom zoo nkauj hauv tsev. Ib txheej ntawm putty dawb nyob rau saum npoo ntawm chav tsev dawb xwb yuav yog feem ntau ntau tshaj 90 nyob rau hauv whiteness thiab ntau tshaj 330 nyob rau hauv fineness. Putty muab faib ua phab ntsa sab hauv thiab sab nrauv phab ntsa. Sab nrauv phab ntsa putty yuav tsum tiv taus cua thiab lub hnub, yog li nws muaj kua nplaum siab, siab zog thiab me ntsis kev tiv thaiv ib puag ncig. Cov kev qhia dav dav ntawm sab hauv phab ntsa putty yog qhov zoo, kev noj qab haus huv thiab kev tiv thaiv ib puag ncig, yog li cov phab ntsa sab hauv tsis siv sab nraud thiab cov phab ntsa sab nrauv tsis siv sab hauv. Feem ntau cov putty yog gypsum los yog cement-based, yog li qhov saum npoo yog ntxhib thiab yooj yim rau daim ntawv cog lus ruaj khov. Txawm li cas los xij, thaum lub sij hawm tsim kho, nws tseem yuav tsum tau siv ib txheej ntawm tus neeg sawv cev sib txuas ntawm lub hauv paus chav kawm txhawm rau txhawm rau lub hauv paus chav kawm, thiab txhim kho cov adhesion ntawm phab ntsa, kom cov putty tuaj yeem ua tau zoo dua rau lub hauv paus nto.
Tus nqi ntawm HPMC siv tiag tiag nyob ntawm qhov chaw huab cua, qhov kub thiab txias, qhov zoo ntawm cov hmoov tshauv calcium hauv zos, daim ntawv qhia zais cia ntawm cov hmoov putty thiab "qhov zoo yuav tsum tau los ntawm tus neeg teb xov tooj". Feem ntau hais lus, nruab nrab ntawm 4kg thiab 5kg.
HPMC muaj lub luag haujlwm ntawm lubrication, uas tuaj yeem ua rau cov hmoov putty muaj kev ua haujlwm zoo. Hydroxypropyl methylcellulose tsis koom nrog cov tshuaj tiv thaiv sib xyaw, tab sis tsuas yog muaj kev pab cuam. Putty hmoov yog ib hom kev sib xyaw ua ke ntawm cov dej ntws thiab ntawm phab ntsa,
Qee qhov teeb meem:
1. hmoov tshem tawm ntawm putty
A: Qhov no muaj feem xyuam rau qhov ntau npaum li cas ntawm cov txiv qaub calcium, thiab tseem muaj feem xyuam rau qhov ntau npaum li cas thiab qhov zoo ntawm cellulose, uas yog tshwm sim hauv cov dej tuav tus nqi ntawm cov khoom. Cov dej tuav tus nqi qis thiab lub sij hawm hydration ntawm txiv qaub calcium tsis txaus.
2. Peeling thiab dov ntawm putty hmoov
A: Qhov no muaj feem xyuam rau tus nqi tuav dej. Lub cellulose viscosity tsawg, uas yog ib qho yooj yim tshwm sim los yog qhov ntau npaum li cas me me.
3. Koob point ntawm putty hmoov
Qhov no muaj feem xyuam rau cellulose, uas muaj cov cuab yeej ua yeeb yaj kiab tsis zoo. Nyob rau tib lub sijhawm, impurities hauv cellulose muaj cov tshuaj tiv thaiv me ntsis nrog cov hmoov tshauv calcium. Yog tias cov tshuaj tiv thaiv yog khaus, cov hmoov putty yuav qhia lub xeev ntawm tofu residue. Nws tsis tuaj yeem mus rau ntawm phab ntsa thiab tsis muaj lub zog sib txuas. Tsis tas li ntawd, nws kuj tshwm sim hauv cov khoom xws li carboxy pawg sib xyaw hauv cellulose.
Lub sij hawm xa tuaj: Mar-17-2022