Hupfu hwehupfu hweputty kazhinji hunoreva chiitiko chekuti pamusoro peiyo putty coating inova yehupfu uye inodonha mushure mekuvakwa, izvo zvinokanganisa kusimba kwekubatanidza kweiyo putty uye kusimba kwejasi. Ichi chiitiko cheupfu chakabatana nezvinhu zvakawanda, chimwe chazvo kushandiswa uye kunaka kwehydroxypropyl methylcellulose (HPMC) mu putty powder.
1. Basa reHPMC mu putty powder
HPMC, sechinhu chinowanzo shandiswa chinowedzera, chinoshandiswa zvakanyanya mukuvaka zvinhu, zvinosanganisira putty powder, dhaka, guruu, nezvimwewo. Mabasa ayo makuru anosanganisira:
Kuomesa mhedzisiro: HPMC inogona kuwedzera kuwirirana kweputty poda, ichiita kuti chivakwa chive chakapfava uye kudzivirira kutsvedza kana kuyerera kweputty poda panguva yekuvaka.
Kuchengetwa kwemvura: HPMC ine mvura yakanaka yekuchengetedza, iyo inogona kuwedzera kushanda kweputty powder uye kudzivirira iyo putty kubva pakurasikirwa nemvura nekukurumidza panguva yekuomeswa, zvichikonzera kuputika kana shrinkage.
Kuvandudzwa kwekunamatira: HPMC inogona kuwedzera kusungirirwa kweputty powder, kuitira kuti inogona kunamatira zviri nani kumadziro kana imwe substrate pamusoro, kuderedza kuitika kwezvinetso zvakadai sekuchera uye kudonha.
Kuvandudza mashandiro ekuvaka: Kuwedzera HPMC kune putty poda kunogona kuvandudza fluidity uye plasticity yekuvaka, kuita kuti mabasa ekuvaka ave akapfava, uye kuderedza marara.
2. Zvikonzero zveputty poda pulverization
Putty poda pulverization idambudziko rakajairika nezvikonzero zvakaoma, izvo zvingave zvine hukama kune zvinotevera zvinhu:
Dambudziko reSubstrate: Kunyura kwemvura kweiyo substrate kwakasimba zvakanyanya, zvichiita kuti putty irasikirwe nekunyorova nekukasira uye kusimba zvisina kukwana, zvichikonzera pulverization.
Putty formula dambudziko: Yakashata fomula yeputty poda, senge isinganzwisisike chikamu chesimende zvinhu (senge simende, gypsum, nezvimwewo), ichakanganisa kusimba uye kusimba kweputty.
Dambudziko rekuita rekuvaka: Kuvaka kusingaite, tembiricha yakakwira kana hunyoro hushoma hunogonawo kukonzera putty poda kudonha panguva yekuomesa.
Kusachengetedzwa kwakashata: Kutadza kuchengetedza iyo putty munguva mushure mekuvaka kana nguva isati yakwana kuenda kune inotevera maitiro kunogona kukonzera iyo putty poda kuti iputse isina kuomeswa zvachose.
3. Hukama pakati peHPMC uye pulverization
Sezvinoita thickener uye mvura-inochengetedza mumiriri, kushanda kweHPMC mu putty powder kunokanganisa zvakananga pahutano hweputty. Simba reHPMC pahupfu rinonyanya kuratidzwa mune zvinotevera zvinhu:
(1) Pesvedzero yekuchengeta mvura
Iko kuputika kweputty powder kunowanzoenderana nekukurumidza kubuda kwemvura muputty. Kana huwandu hweHPMC hwakawedzerwa husina kukwana, iyo putty powder inorasikirwa nemvura nekukurumidza panguva yekuomeswa uye inokundikana kusimba zvakakwana, zvichiita kuti pamusoro pehupfu. Iyo yekuchengeta mvura pfuma yeHPMC inobatsira iyo putty kuchengetedza hunyoro hwakakodzera panguva yekuomesa, ichibvumira iyo putty kuomesa zvishoma nezvishoma uye kudzivirira hupfu hunokonzerwa nekukurumidza kurasikirwa kwemvura. Naizvozvo, kuchengetwa kwemvura kweHPMC kwakakosha mukuderedza hupfu.
(2) Pesvedzero yekukora mhedzisiro
HPMC inogona kuwedzera kuwirirana kweputty powder, kuitira kuti iyo putty inogona kunyatsobatanidzwa kune substrate. Kana hutano hweHPMC husina kunaka kana hunoshandiswa zvisina kunaka, huchakanganisa kuwirirana kweputty powder, zvichiita kuti mvura yaro iwedzere, zvichiita kuti kusaenzana uye kusaenzana kwehupamhi panguva yekuvaka, izvo zvinogona kuita kuti putty powder iome nokukurumidza munharaunda, nokudaro. kukonzera upfu. Uye zvakare, kushandiswa kwakanyanya kweHPMC kuchaitawo kuti pamusoro peiyo putty poda iite yakatsetseka mushure mekuvaka, inokanganisa kunamatira nekuputira uye kukonzeresa upfu hwepamusoro.
(3) Synergy nezvimwe zvinhu
Mu putty powder, HPMC inowanzo shandiswa pamwe chete nezvimwe simentitious zvinhu (semende, gypsum) uye fillers (senge heavy calcium powder, talcum powder). Huwandu hweHPMC hunoshandiswa uye kubatana kwayo nezvimwe zvinhu zvine simba guru pakuita kwese kweputty. Chimiro chisina musoro chinogona kutungamirira kune simba risina kukwana reputty powder uye pakupedzisira rinotungamirira kuhupfu. Zvinonzwisisika kushandiswa kweHPMC kunogona kubatsira kuvandudza kushanda kwekubatana uye simba rekuisa uye kuderedza dambudziko rehupfu rinokonzerwa nekusakwana kana kusaenzana kwesementitious zvinhu.
4. Matambudziko ehutano eHPMC anotungamirira kuhupfu
Mukuwedzera kune huwandu hweHPMC hunoshandiswa, hutano hweHPMC pachahwo hunogonawo kukanganisa kushanda kweputty powder. Kana hutano hweHPMC husina kusvika kune hutsika, hwakadai sehutsanana hweselulosi uye husina kunaka hwekuchengetedza mvura, huchakanganisa zvakananga kuchengetwa kwemvura, kushanda kwekuvaka uye simba reputty powder, uye kuwedzera ngozi yehupfu. Inferior HPMC haina kuoma chete kupa yakagadzikana kuchengetedza mvura uye thickening mhedzisiro, asi inogonawo kukonzera kuputika kwepamusoro, upfu uye mamwe matambudziko panguva yekuomeswa kwe putty. Naizvozvo, kusarudza yemhando yepamusoro HPMC kwakakosha kudzivirira matambudziko ehupfu.
5. Mhedzisiro yezvimwe zvinhu pahupfu
Kunyange zvazvo HPMC inobata basa rinokosha mu putty powder, poda inowanzova mugumisiro wekubatanidzwa kwezvinhu zvakawanda. Zvinhu zvinotevera zvinogonawo kukonzera upfu:
Mamiriro ezvakatipoteredza: Kana tembiricha uye hunyoro hwenzvimbo yekuvaka zvakanyanyisa kana kuderera zvakanyanya, zvinokanganisa kumhanya kwekuomesa uye kwekupedzisira kurapa mhedzisiro yeputty poda.
Kurapwa kusina kunaka kwe substrate: Kana iyo substrate isina kuchena kana kuti pamusoro peiyo substrate inotora mvura yakawandisa, inokanganisa kunamatira kweputty poda uye kukonzera upfu.
Irrational putty powder formula: Yakawandisa kana kuti shoma HPMC inoshandiswa, uye chikamu chesimentitious zvinhu hazvina kunaka, izvo zvichaita kuti kusakwana kwekunamatira uye kusimba kweputty powder, zvichiita kuti upfu.
Iyo powdering phenomenon ye putty powder yakabatana zvikuru nekushandiswa kweHPMC. Basa guru reHPMC mune putty powder kuchengetedza mvura uye kukora. Kushandisa zvine musoro kunogona kudzivirira zvinobudirira kuitika kwehupfu. Zvisinei, kuitika kwehupfu hakubvi pane HPMC chete, asiwo pane zvinhu zvakadai sechimiro cheputty powder, substrate treatment, uye nzvimbo yekuvaka. Kuti udzivise dambudziko rehupfu, zvakakoshawo kusarudza yemhando yepamusoro HPMC, inonzwisisika formula dhizaini, tekinoroji yekuvaka yesainzi uye nzvimbo yakanaka yekuvaka.
Nguva yekutumira: Oct-15-2024