I-Cellulose Etheri-polymer yokwenziwa engeyona eye-ionic eyedwa, okungukuthi ancibilike amanzi futhi i-solvent-soluble. Inemiphumela ehlukile emikhakheni ehlukene. Isibonelo, ezintweni zokwakha amakhemikhali, inemiphumela elandelayo eyinhlanganisela: ① I-ejenti yokugcinwa kwamanzi ② likhulu Embonini ye-polyvinyl chloride, kuyinto emulsifier futhi ihlakazekile; Embonini yezemithi, kuyizinto zokukhishwa kwe-becter kanye ne-agent ejekeli yokukhishwa kwamathambo, njll. Okulandelayo, ngizogxila ekusetshenzisweni nasekusebenzeni kwe-cellulose ether ezintweni zokwakha zokuvikela imvelo.
1. Ku-Latex Paint
Embonini ye-latex Paint, i-hydroxyethyl cellulose kufanele ikhethwe. Ukucaciswa okujwayelekile kwe-viscosity yi-RT30000-50000, futhi umthamo wezethenjwa ngokuvamile cishe u-1.5 ‰ -2 ‰. Umsebenzi oyinhloko we-HydroxyEthyl ku-Latex Paint ukuqina, uvikele ukuvezwa kombala, usize ukusakazeka, i-latex, nokuqina kombala, futhi kukhuphule ukubonwa kwengxenye, okuwusizo ekusebenzeni kwalolokwakha: I-Hydroxyyethyl ethyl cellulose ilula ukuyisebenzisa. Ingachithwa emanzini abandayo namanzi ashisayo, futhi ayithintwa yinani le-PH. Ingasetshenziswa phakathi kwenani le-PH la-2 no-12. Kunezindlela ezintathu zokusebenzisa:
I. Faka ngqo ekukhiqizeni:
Le ndlela kufanele ikhethe i-hydroxyethyl cellulose yohlobo olubambezelekile - i-hydroxyyethyl cellulose enesikhathi sokuchithwa kwemizuzu engaphezu kwama-30. Izinyathelo zimi ngalendlela elandelayo: ① Faka inani elithile lamanzi amsulwa esitsheni esifakwe nge-agitator ephezulu-shear ② Qala ukuvusa ngokuqhubekayo ngejubane eliphansi, futhi ngasikhathi sinye engeza i-hydroxyethyl geroal kwisisombululo ngokulinganayo. Kuze kube yilapho zonke izinto zokwakha ama-granular zifakwe amanye ama-auxilies nezinye izengezo eziyisisekelo, njll.
Ⅱ. Ifakwe notshwala bamama ukuze isetshenziswe kamuva:
Le ndlela ingakhetha uhlobo olusheshayo, futhi ine-anti-mbumba ye-cellulose. Inzuzo yale ndlela ukuthi inokuguquguquka okuthe xaxa futhi kungangezwa ngqo ku-Latex Paint. Indlela yokulungiselela iyafana nezinyathelo ①-④.
Ⅲ. Yilungiselele iphalishi ukuze isetshenziswe kamuva:
Njengoba ama-organic solvents ama-solvents ampofu (insoluble) ye-hydroxyethyl, lezi zinhlava zingasetshenziswa ukwenza iphalishi. I-solvents esetshenziswa kakhulu ye-organic uketshezi olwenziwayo ekwakhekeni kwepende ye-latex, njenge-ethylene glycol, i-plylene glycol, kanye nama-ejenti akha amafilimu (njenge-diethylene glycol butyl acetate). I-porridge hydroxyyethyl celtulese ingangezwa ngqo kupende. Qhubeka nokuvusa kuze kuchithwe ngokuphelele.
2. Odongeni ukuskena uPutty
Njengamanje, emadolobheni amaningi ezweni lakithi, indawo yokulwa namanzi nokungamelana nokungamelana nokungamelana nobuntu kubhekwe ngokuyisisekelo ngabantu. Kukhiqizwa ukusabela kwe-acetal kweVinyl Alcohol kanye ne-formaldehyde. Ngakho-ke, lokhu okuqukethwe kuqedwa kancane kancane ngabantu, futhi imikhiqizo yeCellulose ether ether isetshenziselwa ukufaka le nto. Lokho kusho ukuthi, ukuthuthukiswa kwezinto zokwakha ezemvelo zokwakha, amaselula okwamanje okuwukuphela kwento.
E-putty engamelana namanzi, ihlukaniswe ngezinhlobo ezimbili: i-dry powder putty ne-putty paste. Phakathi kwalezi zinhlobo ezimbili ze-putty, i-hydroxypropyl methylcellulose ngokuvamile kukhethwe, futhi ukucaciswa kwe-viscosity ngokuvamile kuphakathi kwama-80,000-90,000. Indima yokugcinwa kwamanzi, ukubopha izibopho, ukuthambisa nokunye.
Njengoba amafomula ama-putty abakhiqizi ahlukahlukene ahlukile, ezinye ziyi-grey calcium, ukukhanya calcium, usimende omhlophe, njll. Amafomula amabili ahlukile. Inani elingeziwe lingaba ngu-3 ‰ -5 ‰.
Ekwakhiweni kodonga ukuskena uPutty, ngoba ingaphezulu lesisekelo sodonga linezinga elithile lokufakwa kwamanzi (izinga lokufakwa kwamanzi kodonga lwezitini luyi-13%, kanti izinga lokufakwa kwamanzi lingu-3-5%), Kuhlanganiswe nokuhwamuka komhlaba wangaphandle, uma i-putty ilahlekelwa amanzi ngokushesha okukhulu, kuzoholela emihlafwini noma ekususweni kwempuphu, okuzokwenza buthaka amandla we-putty. Ngakho-ke, ukungeza i-cellulose ether kuzoxazulula le nkinga. Kepha ikhwalithi ye-filler, ikakhulukazi ikhwalithi ye-ash calcium nayo ibaluleke kakhulu. Ngenxa yokuvunywa okuphezulu kwe-cellulose, i-buoyancy of the putty nayo iyathuthukiswa, futhi into ebabayo ngesikhathi sokwakha nayo iyagwenywa, futhi inethezekile futhi ikhululekile futhi ilondolozwa ngemuva kokuskena.
3. Udaka lukakhonkolo
Udaka lukakhonkolo, ukufeza amandla okugcina, usimende kufanele afakwe ngama-hydrate ngokuphelele. Ikakhulu ekwakhiweni kwehlobo, udaka lukakhonkolo lulahlekelwa amanzi ngokushesha okukhulu, futhi izinyathelo zokugcwala ngokuphelele zisetshenziselwa ukugcina futhi zifafaze amanzi. Ukuchitha izinsiza nokusebenza okuphazamisayo. Isihluthulelo ukuthi amanzi asebusweni kuphela, futhi i-hydration yangaphakathi isaphelele. Ngakho-ke, ikhambi lale nkinga ukungeza i-hydroxypropyllllylyll methylcellulose phakathi kuka-150,000 no-200,000 kukhonkolo kasimende. , inani lokungezwa liba ngu-2 ‰ -3 ‰, kanti izinga lokugcina amanzi lingandiswa libe ngaphezu kwama-92%. Indlela yokusebenzisa ukhonkolo kadaka ukwengeza amanzi ngemuva kokuthi i-powder eyomile ixubene kahle.
I-4
Ngokuthuthuka okusheshayo kwemboni yezokwakha, isidingo sabantu sezinto ezintsha zokwakha siyanda usuku nosuku. Ngenxa yokwanda kokuqwashisa kwabantu ngokuvikelwa kwemvelo kanye nokwenza ngcono okuqhubekayo kokusebenza kwezokwakha, imikhiqizo ye-gypsum eyenziwe ngamaveni yathuthuka ngokushesha. Njengamanje, imikhiqizo evame kakhulu i-gypsum isebenzisa i-gypsum ebonakalayo, i-bonded gypsum, i-gypsum enama-gypsum, nethambisi.
I-Plastering Gypsum iyisiko lokufaka esezingeni eliphakeme lokudonswa kwezindonga ezingaphakathi nophahla. Indawo yodonga efakwe ku-kulungile futhi ibushelelezi, ayiyeki i-powder, ihlanganiswe ngokuqinile esisekelweni, ayinakuqhekeka futhi iwela umsebenzi wokucibilikisa; I-Bonded Gypsum ngohlobo olusha lwesakhiwo sebhodi lokukhanyisa i-adhesive iyisitabane esinamathelayo senziwe nge-gypsum njengezinto eziyisisekelo futhi zengeza izengezo ezahlukahlukene. Ilungele ukubopha izibopho phakathi kwezinto ezahlukahlukene zokwakha udonga. Kungelona ubuthi, anambitha, izici ezinjengamandla okuqala, ukulungiselelwa okusheshayo, kanye nokubopha okuqinile, kuyinto esekelayo yokwakha amaphaneli wokwakha kanye nokwakhiwa kwe-block; I-gypsum caulking agent i-ganom filler phakathi kwamaphaneli e-gypsum kanye nokulungiswa kwe-filler yezindonga nemifantu.
Le mikhiqizo ye-gypsum inochungechunge lwemisebenzi ehlukene. Ngaphezu kwendima ye-gypsum kanye nabasizi abahlobene, inkinga ebalulekile ukuthi izengezo ezingeziwe ze-cellulose ether zidlala indima eholayo. Ngoba i-gypsum ihlukaniswe nge-anhydrous gypsum ne-hemihydrate gypsum, i-gypsum ehlukile inemiphumela ehlukile ekusebenzeni komkhiqizo, ngakho-ke ukuqina, ukugcinwa kwamanzi kanye nokubuyiselwa kwemali kuthola ikhwalithi yezinto zokwakha ze-gypsum. Inkinga evamile yalezi zinto ezibonakalayo inamafutha futhi iqhekeka, futhi amandla okuqala awatholakali. Ukuxazulula le nkinga, ukukhetha uhlobo lwe-cellulose kanye nendlela yokusetshenziswa kwe-retard. Kulokhu, i-methyl noma i-hydroxypropylylyl methyl 30000 ngokuvamile kukhethwe. -60000, inani lokungezwa liphakathi kuka-1.5 ‰ -2 ‰, futhi i-cellulose igxile ekugcinweni kwamanzi nasekubuyiseni ukuthambisa ukuthambisa.
Kodwa-ke, akunakwenzeka ukuncika ku-cellulose ether njenge-retarder, futhi kuyadingeka ukwengeza i-retarder ye-citric acid ukuxuba nokusebenzisa ngaphandle kokuthinta amandla okuqala.
Ukugcinwa kwamanzi ngokuvamile kubhekisele emanzi angakanani azolahleka ngokwemvelo ngaphandle kokumuncwa kwamanzi kwangaphandle. Uma udonga lomile kakhulu, ukumuncwa kwamanzi kanye nokuhwamuka kwemvelo endaweni eyisisekelo kuzokwenza lokho kunciphise amanzi ngokushesha, futhi okunamafutha nokuqhekeka kuzokwenzeka.
Le ndlela yokusebenzisa ixubene ne-powder eyomile. Uma ulungiselela ikhambi, sicela ubheke indlela yokulungiselela ikhambi.
I-5.
I-Insulation Metar uhlelo olusha lwento engaphakathi yodonga lokufakwa odongeni esifundeni esisenyakatho. Kuyinto yodonga lodonga oluhlanganiswe ngokwezinto zokufaka, udaka kanye ne-binder. Kulokhu okubonakalayo, i-cellulose idlala indima ebalulekile eBonding namandla andayo. Ngokuvamile khetha i-methyl celtule
6. I-ejenti ebonakalayo
Umenzeli obonakalayo kufanele abe yi-HPNC20000, futhi ukuthambekela kwethayili kufanele kube ngaphezu kwe-100,000. I-ejenti ebonakalayo kufanele isetshenziswe njengomkhulu, ongathuthukisa amandla ashukumisayo namandla alwa nemicibisholo.
Isikhathi Seposi: APR-28-2024