Pane humwe hukama pakati pehupfu hwehupfu hweputty powder uye HPMC (hydroxypropyl methylcellulose), asi mabasa nemigumisiro yezviviri zvakasiyana.
1. Kuumbwa uye hupfu hunhu hweputty poda
Putty poda chivakwa chekuvaka chinoshandiswa kumisa madziro, kugadzirisa uye kushongedza. Izvo zvakakosha zvinosanganisira base zvinhu (sesimende, gypsum), fillers (senge calcium carbonate) uye additives (seselulosi ether, mvura inochengetedza agent, nezvimwewo). Hunhu hwehupfu hwehupfu hwehupfu hunonyanya kureva kunaka, kufanana uye kunzwa kwezvikamu zvayo panguva yekuvaka. Uhu hupfu hwehupfu hunokanganiswa nezvinhu zvinotevera:
Particle size yekuzadza: Calcium carbonate inowanzo shandiswa seyakanyanya kuzadza. Iyo yakanyanya kunaka calcium carbonate particles, iyo inonakisa hupfu hwehupfu hweputty, uye zviri nani kupfava uye kutsetseka kwemadziro mushure mekushandisa.
Rudzi rwechigadziko zvinhu: Semuyenzaniso, simende-based putty poda uye gypsum-based putty poda ichave nemanzwiro akasiyana uye hunhu nekuda kwezvakasiyana zvigadziko zvinoshandiswa. Zvimedu zvesimende-based putty poda inogona kunge yakaoma, nepo iyo yegypsum-based putty poda inogona kuve yakatsetseka.
Kugadzira tekinoroji: Mukugadzira putty poda, dhigirii rekukuya uye kufanana kwefomati kuchakanganisawo hupfu hwemhando. Zvirinani kugadzirisa tekinoroji inogona kuburitsa yakanyanya kutetepa uye yunifomu putty poda.
2. Basa reHPMC mu putty powder
HPMC, iyo inonzi hydroxypropyl methylcellulose, inowanzowedzera muputty powder. Iyo polymer inonyungudika nemvura iyo inonyanya kuita basa rekukora, kuchengetedza mvura nekuvandudza kuita kwekuvaka. HPMC pachayo haikanganisi zvakananga chidimbu chehupfu (kureva hupfu hwehupfu) hweputty powder, asi ine hukuru hwekuvandudza pakuita kwekuvaka kweputty powder:
Mvura yekuchengetedza mvura: Basa rinokosha reHPMC kuchengetedza mvura, iyo inogona kunonoka kubuda kwemvura muputty powder panguva yekuvaka uye kudzivirira iyo putty powder kubva pakuoma nguva isati yasvika panguva yekuvaka rusvingo. Izvi zvine mhedzisiro yakanaka pamadziro emadziro uye kunamatira, kunyanya mukupisa kwakanyanya uye kwakaoma nharaunda, kuchengetedza mvura kunonyanya kukosha.
Thickening effect: HPMC inogona kuwedzera viscosity ye putty powder, kuitira kuti ive ine mwero kusagadzikana uye nyore kukwenya mushure mekukurudzira. Izvi zvinobatsira kudzora kuyerera kweputty poda panguva yekuvaka, inoderedza chiitiko chekubhururuka uye kudonha kwehupfu, uye inogona kuwedzera simba rekubatanidza, nekudaro nekunatsiridza manzwiro panguva yekuvaka.
Kuvandudza mashandiro ekuvaka: Kuvepo kweHPMC kunogona kuita kuti putty poda ishande panguva yekuvaka, inzwe yakapfava, uye inopa yakawedzera yunifomu uye yakapfava mhedzisiro paunenge uchitsvedzerera. Kunyange zvazvo HPMC isingashandure kunaka kwemuviri weputty powder particles, inovandudza kushanda kwese kwese uye inoita kuti kunzwa kwehupfu kuve kwakaoma kana ikashandiswa.
3. Mhedzisiro isina kunanga yeHPMC pamhando yeputty powder
Kunyangwe HPMC isingashandure zvakananga saizi yechidimbu kana kunaka kwemuviri kweputty poda, inovandudza mhedzisiro yekuvaka yeputty poda kuburikidza nekuchengetedza mvura, kukora, lubricity uye zvimwe zvinhu, zvichiita kuti putty poda iite nyore uye nyore kushanda kana yashandiswa. Munguva yekuvaka, putty poda ine HPMC iri nyore kuisa furati, ichidzikisa mavanga uye kusaenzana, izvo zvinoita kuti vashandisi vanzwe kuti hupfu hwakanyanya kutetepa.
Kuchengetwa kwemvura kweHPMC kunogona kudzivirira shrinkage kuputika mu putty powder panguva yekuomeswa kwemadziro, iyo inewo mhedzisiro yakanaka pakuvandudza iyo yakazara flatness uye kutsetseka kwemadziro. Nokudaro, kubva pakuona kwekupedzisira kwemadziro ekugadzirisa, HPMC ine imwe nzira isina kunanga pahutano hweputty powder.
4. Ukama pakati peHPMC dosage uye hupfu hwemhando
Iyo dosage yeHPMC inodawo kudzorwa nemazvo. Kazhinji, muyero weHPMC mune putty poda idiki, uye kushandisa zvakanyanya kunotungamira kune anotevera matambudziko:
Kuwedzeredza-kunyanya: Kana muyero weHPMC wakawandisa, iyo putty powder inogona kunge yakanyanyisa, zvichiita kuti zvive zvakaoma kumutsa, uye zvinogona kutokonzera matambudziko akadai sekurasikirwa kweupfu uye kunamatira kwepamusoro. Hazvisi nyore kuisa flat panguva yekuvaka, izvo zvinokanganisa yekupedzisira madziro ekuita uye kupa vanhu kunzwa kwehupfu hwakakasharara.
Wedzera nguva yekuomesa: Mvura yekuchengetedza mvura yeHPMC inononoka nguva yekuomesa yeputty powder. Kana muyero wacho wakawandisa, rusvingo runogona kusaoma kwenguva yakareba, izvo zvisingakodzeriwo kufambira mberi kwekuvaka.
Nokudaro, chiyero cheHPMC chinofanira kunge chiri mukati mehutano hwakanaka kuti uite basa rayo mukuvandudza kunaka kweputty powder.
Hunhu hwehupfu hweputty hunonyanya kutariswa nekunaka kwehwaro hwayo uye kuzadza, pamwe nemaitiro ekugadzira uye zvimwe zvinhu. Sekuwedzera mune putty powder, HPMC haitauri zvakananga hupfu hwehupfu, asi ine hutsika husina kunanga hunoita pakunaka kwehupfu hwayo kuburikidza nekuvandudza kuchengetwa kwemvura, kuwedzera uye kuvaka zvivakwa zveputty powder. Kushandisa zvine musoro kweHPMC kunogona kuita kuti putty poda iratidze kunzwa kuri nani uye mashandiro ekushandisa panguva yekuvaka, kuderedza kukanganisa kwekuvaka, uye nekudaro kunatsiridza flatness uye kunaka kwemadziro.
Nguva yekutumira: Sep-30-2024