Nzira yekuvandudza sei kuvakwa kwe cellulose pamadziro ekushisa kwepamusoro muzhizha

Parizvino, yave kuda kupinda muzhizha, uye tembiricha yakakwira zvakanyanya, kunyanya mudunhu rekuchamhembe.Tembiricha yakakwira uye mhepo yakaoma.Kupisa kwepamusoro kwemadziro kunogona kusvika 60 ° C.Nekuda kwekushisa, cellulose kazhinji ine matambudziko akadai sekuvaka kwakashata uye kubviswa kwehupfu panguva yekuvaka.Chikonzero chikuru ndechekuti nekuda kwekushisa kwepamusoro kwemadziro, kuchengetwa kwemvura kweputty hakuna kunaka, saka mvura iri muputty inokurumidza kunyura kana kunyungudutswa nemadziro, kuitira kuti putty irege kudzokororwa nekuputirwa.Hollowing uye peeling zvinoonekwa.Maitiro ekuvandudza kuchengetwa kwemvura kweupfu kunze kwemadziro putty kunyanya ine nzira dzinotevera:

1. Wedzera huwandu hwe cellulose ether

Cellulose ether ine mvura yakanaka yekuchengetedza mvura, asi kushanda kwekuchengetedza mvura hakuwedzeri mushure mekunge imwe yero cellulose ether yawedzerwa.Panguva imwecheteyo, kuwedzera kwe cellulose kunowedzera viscosity ye putty uye kuvakwa hakusi nyore.Mukuwedzera, mari yeputty inowedzera.

2. Wedzera huwandu hwe lignocellulose

Lignocellulose ine imwe nzira yekuchengetedza mvura.Kuwedzerwa kwehuni fiber inovandudza simba rekuchengetedza mvura yezvinyorwa, inoita kuti zvinhu zvigadziriswe zvakaenzana, uye zvinogona kuvandudza kushandiswa kwekushanda panguva imwe chete, asi nheyo yekuchengetedza mvura ye lignocellulose yakasiyana neye cellulose.Iine hunhu hwekutorwa kwebvudzi.(Mvura conduction), pachava nekunyorova pakati pefiber imwe neimwe, uye kana hunyoro huri munzvimbo yakapoteredza yefiber hunochinja uye huchiderera, hunyoro huri pakati pemafibhi huchasunungurwa zvakaenzana.Kuvhura nguva, kwete nyore kutsemuka.Nekudaro, nekuti ukobvu hweputty kumadziro ekunze kwakatetepa kwazvo, ukobvu hwega ega scrape coating ndeye 0.5-1mm chete.Kana kutonhora kwepamusoro kwechigadziko chepasi uye tembiricha yemhepo yakakwira, mashandiro ayo ekuchengetedza mvura haasi pachena, uye iyo inodzokororwa scrape coating performance ivhareji.

3. Wedzera huwandu hwepolymer

Pamadziro ane thinner putty, mhepo yakaoma uye yakakwirira base tembiricha, kuwedzera huwandu hwepolymer ndiyo imwe yenzira dziri nani dzekuita kuti putty idzokorore kukorobha zvivakwa, asi mutengo we redispersible latex poda wakakwira zvakanyanya, huwandu hukuru huchawedzera zvakanyanya. mutengo we putty.Inogonawo kuita basa riri nani nekuwedzera zvishoma zvepolyvinyl alcohol powder, asi viscosity yepolyvinyl alcohol powder yakakura, iyo inokanganisa kushanda, uye sanding pfuma yeputty haina kunaka..

4. Wedzera lubricant yepolymer

Kuburikidza nebvunzo, inofungidzirwa kuti iri nani sarudzo yekuwedzera yakakwira-vhoriyamu lubricant kune yekunze madziro putty munzvimbo yekupisa kwakanyanya muzhizha.Mafuta acho ndeemukomboni wepolymer, uye iyo rheological lubricant inonyanya kunangana nekuvandudza mashandiro ekuvaka mune simende-based system.Kuvhura nguva uye kuenderana kuita.Inowedzera kushanda uye sag kuramba kwematope, plasters, renders, plasters uye zvinonamira uye inodzivirira delamination yesimende yekuzvimisa-leveling.Chikonzero chekuchengetedza mvura ndechekuti kune nhamba huru ye hydrophilic inoshanda mapoka pane yayo molecular chain.Panyaya yekudzokorora uye kupeta, haizorasikirwe nemvura, ine yakanakisa kuchengetedza kwekuita kwemvura, uye ine thickening uye thixotropy panguva imwe chete, zvichiita kuti chivakwa chive chakapfava uye chinogona kutsiva chikamu che cellulose, asi mutengo wayo unongova cellulose ether, uye muyero wayo 0.1-0.2%., chinhu chinodhura zvikuru, kana chikashandiswa pamwe chete ne cellulose ether, lignocellulose, uye redispersible latex powder, mhedzisiro ichava nani.