1. Matambudziko anowanzoitika muupfu hweputty
Kuoma nekukurumidza kunokonzerwa nehuwandu hweupfu hwecalcium inowedzerwa mumadota (hwakanyanya kukura, huwandu hweupfu hwecalcium inoiswa mumadota eputty hunogona kuderedzwa zvakakodzera) hunoenderana nehuwandu hwemvura inochengetwa mufiber, uye hunoenderanawo nekuoma kwemadziro.
Kukwenya nekukombama zvine chekuita nekuchengetwa kwemvura, izvo zviri nyore kuitika kana viscosity ye cellulose yakaderera kana huwandu hwekuwedzera huri hushoma.
Kubviswa kweupfu hweputty yemadziro emukati kunoenderana nehuwandu hwecalcium powder inowedzerwa muash (huwandu hwecalcium powder yeash muputty formula hudiki zvakanyanya kana kuchena kwecalcium powder yeash kwakaderera zvakanyanya, uye huwandu hwecalcium powder yeash muputty powder formula hunofanira kuwedzerwa zvakakodzera). Panguva imwe chete, zvinoenderanawo nehuwandu uye mhando yecellulose, iyo inoratidzwa muhuwandu hwekuchengetedza mvura yechigadzirwa. Mwero wekuchengetedza mvura wakaderera, uye nguva yeash calcium powder (calcium oxide muash calcium powder haina kushandurwa zvizere kuita calcium hydroxide) haina kukwana.
Kufuro kunoenderana nehunyoro hwakaoma uye kuti madziro akatsetseka sei, uye zvakare zvine chekuita nekuvakwa kwacho.
Kuonekwa kwezvibodzwa zvine chekuita ne cellulose, iyo ine hunhu husina kunaka hwekuumba firimu. Panguva imwe chete, tsvina iri mu cellulose inobatana zvishoma ne ash calcium. Kana mhinduro yacho yakanyanya, putty powder ichaonekwa muchimiro che bean curd residue. Haigone kuiswa pamadziro, uye haina simba rakabatana panguva imwe chete. Pamusoro pezvo, mamiriro ezvinhu aya anoitikawo nezvigadzirwa zvakaita se carboxymethyl yakasanganiswa ne cellulose.
Makomba nemaburi anoonekwa. Izvi zviri pachena kuti zvine chekuita nekumanikidzwa kwemvura pamusoro pemvura yehydroxypropyl methylcellulose aqueous solution. Kumanikidzwa kwemvura patafura yehydroxyethyl aqueous solution hakusi pachena. Zvingave zvakanaka kuita mushonga wekupedzisa.
Kana putty yaoma, zviri nyore kutsemuka nekutsvuka. Izvi zvine chekuita nekuwedzerwa kwehuwandu hwakawanda hweash-calcium powder. Kana huwandu hweash-calcium powder hukawedzerwa zvakanyanya, kuomarara kweputty powder kuchawedzera mushure mekuoma. Kana putty powder isina kuchinjika, inotsemuka zviri nyore, kunyanya kana ikashandiswa nesimba rekunze. Izvi zvine chekuitawo nehuwandu hwakawanda hwecalcium oxide muash calcium powder.
2. Sei hupfu hweputty huchipera simba mushure mekuwedzera mvura?
Cellulose inoshandiswa sechinhu chinosimbisa uye chinochengetedza mvura muputty. Nekuda kwethixotropy yecellulose pachayo, kuwedzerwa kwecellulose muputty powder kunotungamirawo kuthixotropy mushure mekuwedzera mvura muputty. Iyi thixotropy inokonzerwa nekuparadzwa kwechimiro chezvikamu zviri muputty powder chisina kugadzikana. Chimiro ichi chinomuka pakuzorora uye chinoputsika kana chamanikidzwa. Kureva kuti, viscosity inoderera kana yakurungwa, uye viscosity inodzoka kana yamira.
3. Chii chinoita kuti putty ireme zvakanyanya pakukwesha?
Muchiitiko ichi, viscosity ye cellulose inowanzo shandiswa yakanyanya. Vamwe vagadziri vanoshandisa 200,000 cellulose kugadzira putty. Putty inogadzirwa nenzira iyi ine viscosity yakakura, saka inorema kana ichikweshwa. Huwandu hunokurudzirwa hweputty yemadziro emukati i3-5 kg, uye viscosity i80,000-100,000.
4. Sei viscosity cellulose yakafanana ichinzwa yakasiyana munguva yechando neyezhizha?
Nekuda kwekupisa kwemuchina, kupenya kweputty nemortar kunodzikira zvishoma nezvishoma nekuwedzera kwekupisa. Kana tembiricha ikapfuura tembiricha yegel yechigadzirwa, chigadzirwa chinobviswa mumvura uye chinorasikirwa nekupenya kwacho. Tembiricha yemukamuri muzhizha inowanzova pamusoro pe30 degrees, izvo zvakasiyana zvikuru netembiricha yemuchando, saka kupenya kwacho kunenge kwakaderera. Zvinokurudzirwa kusarudza chigadzirwa chine kupenya kwakakwira paunenge uchiisa chigadzirwa muzhizha, kana kuwedzera huwandu hwecellulose, uye kusarudza chigadzirwa chine tembiricha yakakwira yegel. Edza kusashandisa methyl cellulose muzhizha. Tembiricha yegel iri pakati peAnenge madhigirii makumi mashanu nemashanu, kana tembiricha yakakwira zvishoma, kupenya kwayo kuchakanganiswa zvakanyanya.
Nguva yekutumira: Chivabvu-04-2023