I-Cellulose ether iyi-polymer engeyona i-ionic semi-synthetic, encibilika emanzini futhi encibilika.Inemiphumela ehlukene ezimbonini ezahlukene.Isibonelo, ezintweni zokwakha zamakhemikhali, zinemiphumela elandelayo eyinhlanganisela:
①Umenzeli ogcina amanzi
②I-Thickener
③Leveling
④Ukwakhiwa kwefilimu
⑤ Isibopho
Embonini ye-polyvinyl chloride, iyi-emulsifier ne-dispersant;embonini yezemithi, iyisibophezelo kanye nezinto zohlaka lokukhishwa kancane futhi olulawulwayo, njll. Ngenxa yokuthi i-cellulose inemiphumela ehlukahlukene ehlanganisiwe, ukusetshenziswa kwayo Inkambu nayo ibanzi kakhulu.Okulandelayo, ngizogxila ekusetshenzisweni nasekusebenzeni kwe-cellulose ether ezintweni zokwakha ezihlukahlukene.
1. Embonini yepende ye-latex, khetha i-hydroxyethyl cellulose, ukucaciswa okujwayelekile kwe-viscosity elinganayo yi-RT30000-50000cps, ehambisana nokucaciswa kwe-HBR250, futhi isilinganiso sereferensi ngokuvamile singu-1.5 ‰-2 ‰.Umsebenzi oyinhloko we-hydroxyethyl kupende we-latex ukuqina, ukuvimbela ukugeleza kwe-pigment, ukusiza ukuhlakazeka kwe-pigment, ukuzinza kwe-latex, nokwandisa i-viscosity yezingxenye, okuwusizo ekusebenzeni kokulinganisa kokwakhiwa. : I-Hydroxyethyl cellulose isebenziseka kalula.Ingancibilika emanzini abandayo noma emanzini ashisayo, futhi ayithinteki ngenani le-pH.Ingasetshenziswa ngokuphephile phakathi kwe-PI value 2 kanye ne-12. Izindlela zokusebenzisa zimi kanje:
I. Engeza ngokuqondile ekukhiqizeni: Kule ndlela, uhlobo olubambezelekile lwe-hydroxyethyl cellulose kufanele lukhethwe, bese kusetshenziswa i-hydroxyethyl cellulose enesikhathi sokuhlakazeka esingaphezu kwemizuzu engama-30.Amanzi amaningi ahlanziwe ngaphakathi emlonyeni ②Qala ukunyakazisa ngesivinini esiphansi ngokuqhubekayo, futhi ngesikhathi esifanayo kancane wengeza i-hydroxyethyl esixazululweni ngokulinganayo ③Qhubeka ugoqoza kuze kucwiliswe zonke izinto eziyimbudumbudu ④Engeza ezinye izithasiselo nezithako ze-alkaline, njll. ⑤Guqula kuze kube Wonke amaqembu e-hydroxyethyl ziqedwe ngokuphelele, bese wengeza ezinye izingxenye kufomula, futhi ugaye kuze kube umkhiqizo ophelile.
Ⅱ.Ifakwe utshwala obuningi ukuze busetshenziswe kamuva: Le ndlela ingakhetha i-cellulose esheshayo, enomphumela wokuqeda isikhutha.Inzuzo yale ndlela yukuthi inokuguquguquka okukhulu futhi ingafakwa ngokuqondile kupende we-latex.Indlela yokulungiselela iyafana nezinyathelo ①-④.
Ⅲ.Lungiselela iphalishi ukuze lisetshenziswe kamuva: Njengoba izincibilikisi zemvelo zizincibilikisi ezimpofu (ezingancibiliki) ku-hydroxyethyl, lezi zincibilikizo zingasetshenziswa ukulungisa iphalishi.Izincibilikisi eziphilayo ezisetshenziswa kakhulu uketshezi lwemvelo ekwenziweni kopende kwe-latex, okufana ne-ethylene glycol, i-propylene glycol, nama-ejenti akha ifilimu (njenge-diethylene glycol butyl acetate).Iphalishi i-hydroxyethyl cellulose ingafakwa ngokuqondile kupende.Qhubeka ugoqa kuze kuqedwe ngokuphelele.
2. Ku-wall scraping putty: Okwamanje, i-putty yokuvikela indawo ezungezile engangeni manzi futhi ekwazi ukumelana nokukhuhla emadolobheni amaningi ezweni lami iqanjwe abantu.Iglue enempilo, yokwakha yenziwa nge-acetalizing polyvinyl alcohol kanye ne-formaldehyde.Ngakho-ke, le nto isuswa kancane kancane ngabantu, futhi imikhiqizo yochungechunge lwe-cellulose ether isetshenziselwa ukufaka esikhundleni salokhu.Okusho ukuthi, ukuthuthukiswa kwezinto zokwakha ezinobungani bemvelo, i-cellulose okwamanje yiyona nto kuphela.Ku-putty engavimbeli amanzi, ihlukaniswe yaba izinhlobo ezimbili: i-powder putty ne-putty paste.Phakathi kwalezi zinhlobo ezimbili ze-putty, i-methyl cellulose eguquliwe kanye ne-hydroxypropyl methyl kufanele kukhethwe.Ukucaciswa kwe-viscosity ngokuvamile kuphakathi kuka-30000-60000cps.Imisebenzi eyinhloko ye-cellulose ku-putty ukugcinwa kwamanzi, ukubopha kanye nokugcoba.Njengoba amafomula e-putty abakhiqizi abahlukahlukene ehlukile, amanye ayi-calcium empunga, i-calcium ekhanyayo, usimende omhlophe, njll., kanti amanye ayimpushana ye-gypsum, i-calcium empunga, i-calcium ekhanyayo, njll., ngakho ukucaciswa, i-viscosity kanye nokungena kwe-cellulose amafomula amabili nawo ahlukene.Isamba esingeziwe singaba ngu-2 ‰-3 ‰.Ekwakhiweni kwe-wall scraping putty, njengoba isisekelo sodonga sinezinga elithile lokumuncwa kwamanzi (izinga lokumuncwa kwamanzi odongeni lwezitini liyi-13%, futhi izinga lokumuncwa kwamanzi likakhonkolo liyi-3-5%), kuhambisana nokuhwamuka kwezwe langaphandle, uma i-putty ilahlekelwa amanzi ngokushesha okukhulu , Kuzoholela ekuqhekekeni noma ekususweni kwempushana, okuzokwenza buthaka amandla e-putty.Ngakho-ke, ukwengeza i-cellulose ether kuzoxazulula le nkinga.Kodwa ikhwalithi ye-filler, ikakhulukazi ikhwalithi ye-ash calcium nayo ibaluleke kakhulu.Ngenxa ye-viscosity ephezulu ye-cellulose, i-buoyancy ye-putty nayo iyathuthukiswa, futhi umkhuba wokuwohloka ngesikhathi sokwakhiwa nawo uyagwenywa, futhi kuba ntofontofo futhi konga umsebenzi ngemuva kokukhuhla.Kungcono kakhulu ukwengeza i-cellulose ether ku-putty putty.Ukukhiqizwa nokusetshenziswa kwayo kulula kakhulu.I-filler kanye nezithasiselo zingaxutshwa ngokulinganayo ku-powder eyomile.
3. Udaka lukakhonkolo: Odakeni lukakhonkolo, ukuze kuzuzwe amandla amakhulu, usimende kufanele ugcwale amanzi ngokugcwele.Ikakhulukazi ekwakhiweni kwehlobo, udaka lwekhonkrithi lulahlekelwa amanzi ngokushesha, futhi izilinganiso ze-hydration ephelele zisetshenziselwa ukugcina nokufafaza amanzi.Indlela yokuqala iwukubangela ukumoshwa kwemithombo yamanzi kanye nokusebenza ngendlela engafanele.Iphuzu eliyinhloko liwukuthi amanzi angaphezulu kuphela, futhi i-hydration yangaphakathi namanje ayiphelele.Ngakho-ke, isixazululo sale nkinga ukwengeza ama-agent ayisishiyagalombili okugcina amanzi kukhonkolo yodaka.Ngokuvamile, i-hydroxypropyl ikhethiwe.I-Methyl noma i-methyl cellulose, ukucaciswa kwe-viscosity kuphakathi kuka-20000-60000cps, futhi inani elingeziwe lingu-2% -3%.Izinga lokugcinwa kwamanzi lingakhuphuka libe ngaphezu kwama-85%.Indlela yokusebenzisa ukhonkolo wodaka ukuxuba impushana eyomile ngokulinganayo bese uyithela emanzini.
4. Ekuplasteni i-gypsum, i-gypsum ebophayo, ne-caulking gypsum: Ngokuthuthuka okusheshayo kwemboni yezokwakha, isidingo sabantu sezinto zokwakha ezintsha siyanda.Ngenxa yokwanda kokuqwashisa kwabantu ngokuvikelwa kwemvelo kanye nokuthuthukiswa okuqhubekayo kokusebenza kahle kwesakhiwo, izinto zikasimende Imikhiqizo ye-Gypsum ithuthukiswe ngokushesha.Njengamanje, imikhiqizo evame kakhulu ye-gypsum i-gypsum yokunamathisela, i-gypsum eboshiwe, i-gypsum ehlotshisiwe, ne-adhesive tile.I-plastering gypsum iyikhwalithi ephezulu yokukhonkoloza kwezindonga zangaphakathi nophahla.Udonga olunamekwe ngalo lulungile futhi lubushelelezi.I-adhesive entsha yebhodi lokukhanya lokwakha iyinto enamathelayo eyenziwe nge-gypsum njengesisekelo sezinto kanye nezithasiselo ezihlukahlukene.Ifanele ukuhlangana phakathi kwezinto ezihlukahlukene zezindonga zokwakha ezingaphili.Ayinabuthi, ayinaphunga, amandla okuqala kanye nokusetha okusheshayo, ukubopha okuqinile nezinye izici, kuyizinto ezisekela amabhodi okwakha kanye nokwakhiwa kwebhulokhi;i-ejenti ye-gypsum caulking iyisigcwalisi segebe phakathi kwamabhodi e-gypsum kanye nesigcwalisi sokulungisa izindonga nokuqhekeka.Le mikhiqizo ye-gypsum inochungechunge lwemisebenzi ehlukene.Ngaphezu kwendima ye-gypsum kanye nezigcwalisi ezihlobene, inkinga eyinhloko ukuthi izithasiselo ze-cellulose ether ezengeziwe zidlala indima ehamba phambili.Njengoba i-gypsum ihlukaniswe i-gypsum ye-anhydrous kanye ne-hemihydrate gypsum, i-gypsum ehlukene inemiphumela ehlukene ekusebenzeni komkhiqizo, ngakho-ke ukuqina, ukugcinwa kwamanzi kanye nokuvinjelwa kunquma izinga lezinto zokwakha ze-gypsum.Inkinga evamile yalezi zinto ezisetshenziswayo ukugoba nokuqhekeka, futhi amandla okuqala awakwazi ukufinyelelwa.Ukuxazulula le nkinga, ukukhetha uhlobo lwe-cellulose kanye nendlela yokusebenzisa inhlanganisela ye-retarder.Mayelana nalokhu, i-methyl noma i-hydroxypropyl methyl 30000 ngokuvamile ikhethwa.-60000cps, inani elingeziwe ngu-1.5% -2%.Phakathi kwazo, i-cellulose igxile ekugcineni amanzi kanye nokunciphisa ukuthambisa.Kodwa-ke, akunakwenzeka ukuthembela ku-cellulose ether njenge-retarder, futhi kuyadingeka ukwengeza i-citric acid retarder ukuxuba nokusebenzisa ngaphandle kokuthinta amandla okuqala.Ukugcinwa kwamanzi ngokuvamile kubhekisela ekutheni angakanani amanzi azolahleka ngokwemvelo ngaphandle kokumuncwa kwamanzi ngaphandle.Uma udonga lome kakhulu, ukumuncwa kwamanzi kanye nokuhwamuka kwemvelo endaweni engaphansi kuzokwenza izinto zilahlekelwe amanzi ngokushesha kakhulu, futhi ukumboza nokuqhekeka nakho kuzokwenzeka.Le ndlela yokusetshenziswa ixubene nempushana eyomile.Uma ulungisa isixazululo, sicela ubheke indlela yokulungiselela ikhambi.
5. Udaka lokuvikela ukushisa uhlobo olusha lwempahla efakwa odongeni lwangaphakathi esifundeni esisenyakatho.Kuyimpahla yodonga ehlanganiswe ngezinto zokufakelwa, udaka kanye ne-binder.Kule nto, i-cellulose idlala indima ebalulekile ekuhlanganiseni nasekukhuliseni amandla.Ngokuvamile khetha i-methyl cellulose ene-viscosity ephezulu (mayelana ne-10000eps), umthamo ngokuvamile uphakathi kuka-2 ‰-3 ‰), futhi indlela yokusetshenziswa iwukuba ukuxubana kwe-powder eyomile.
6. I-ejenti yesixhumi esibonakalayo Khetha i-HPNC 20,000 cps njenge-ejenti yesixhumi esibonakalayo, khetha u-60,000 cps noma ngaphezulu njengokunamathela kwamathayela, futhi ugxile kumenzeli ojiya ku-ejenti yesixhumi esibonakalayo, engathuthukisa amandla aqinile namandla okulwa nomcibisholo.Isetshenziswa njenge-ejenti egcina amanzi ekuhlanganisweni kwamathayili ukuvimbela amathayili ukuthi angawomi amanzi emzimbeni ngokushesha futhi awe.
Isikhathi sokuthumela: Feb-18-2023