I-cellulose ether ezintweni zokwakha zokuvikela imvelo

Umsebenzi nokusetshenziswa kwe-cellulose ether ezintweni zokwakha zokuvikela imvelo

I-cellulose etheriyi-polymer engeyona i-ionic semi-synthetic, inyibilika emanzini kanye ne-solvent ezimbili, ezimbonini ezihlukene ezibangelwa indima yehlukile, njengasezinto zokwakha zamakhemikhali, inomthelela oyinhlanganisela:

① umenzeli ogcina amanzi

② i-ejenti yokuqina

③ ukulinganisa

④ ukwenza ifilimu

⑤ isibopho;

Embonini ye-PVC, iyi-emulsifier, i-dispersant;Embonini yezemithi, iwuhlobo lwe-binder kanye nokukhululwa kancane kwe-skeleton material, ngoba i-cellulose inemiphumela ehlukahlukene ehlanganisiwe, ngakho-ke insimu esetshenziswa kakhulu.Ngezansi ngigxila ekusetshenzisweni kwe-cellulose ether ezintweni zokwakha zokuvikela imvelo kanye nendima.

1. upende we-latex

Emgqeni kapende we-latex, ukukhetha i-hydroxyethyl cellulose, ukucaciswa okujwayelekile kwe-viscosity yi-RT3000-50000cps, isilinganiso sereferensi ngokuvamile si-1.5 ‰-2‰.Indima eyinhloko ye-hydroxyethyl kupende we-latex ukujiya, ukuvimbela i-pigment gelation, ukufaka isandla ekuhlakazweni kwe-pigment, i-latex, ukuzinza, futhi ingathuthukisa i-viscosity yezingxenye, ukufaka isandla ekusebenzeni kokulinganisa kokwakhiwa: I-Hydroxyethyl cellulose kulula ukuyisebenzisa, ingancibilika emanzini abandayo nashisayo, futhi ayithinteki ngenani le-PH, ingasetshenziswa phakathi kwenani elingu-PH 2 no-12, ukusetshenziswa kwezindlela ezintathu ezilandelayo:

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I. Ngeza ngokuqondile:

Ngale ndlela, uhlobo olubambezelekile lwe-hydroxyethyl cellulose - i-hydroxyethyl cellulose enesikhathi sokuhlakazeka esingaphezu kwemizuzu engama-30 kufanele kukhethwe.Inqubo imi kanje: (1) ukuba high kufanele usike blender esitsheni kanye quantitative amanzi ahlanzekile (2) abantu baqala kancane enyakaza ngokuqhubekayo, ngesikhathi esifanayo kancane engeza hydroxyethyl ngokulinganayo isixazululo (3) qhubeka ugovuze kuze konke. izinto ezimanzi ze-granular (4) ukuze ujoyine ezinye izithasiselo nezithako ze-alkaline (5) zinyakaze kuze kuqedwe ngokuphelele yonke i-hydroxyethyl, engeza ezinye izingxenye zefomula, ugaye emkhiqizo ophelile.

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ⅱ.Ifakwe utshwala bukamama:

Le ndlela ingakhetha i-cellulose esheshayo - e-soluble, futhi inomphumela wokukhunta - ubufakazi.Inzuzo yale ndlela iwukuba nokuguquguquka okukhulu, ungahlanganisa upende we-emulsioni ngokuqondile, ukwakha indlela iyafana nokuthi ①–④ isinyathelo siyefana.

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ⅲ, nephalishi elizosetshenziswa:

Njengoba izincibilikisi zemvelo zingama-solvents ampofu (angancibiliki) ku-hydroxyethyl, angasetshenziswa ukulungisa iphalishi.Izinyibilikisi ezisetshenziswa kakhulu eziphilayo uketshezi oluphilayo ekwenziweni kopende kwe-latex, njenge-ethylene glycol, i-propylene glycol kanye nama-ejenti akhiqiza ifilimu (njenge-diethylene glycol butyl acetate), i-porridge hydroxyethyl cellulose ingafakwa ngokuqondile kupende, ngemva kokwengeza, qhubeka ugovuze kuze kuqedwe ngokuphelele.

2. ukukhuhla i-putty yodonga

Njengamanje, i-China iphakathi kokumelana kwamanzi amaningi edolobheni, ukumelana ne-swab ye-putty yokuvikelwa kwemvelo kuye kwathathwa ngokungathi sína ngabantu, eminyakeni embalwa edlule, ngoba i-putty eyenziwe nge-glue yokwakha ikhipha umonakalo wegesi we-formaldehyde empilweni yabantu, isakhiwo. iglue yenziwe nge-polyvinyl alcohol kanye ne-formaldehyde acetal reaction.Ngakho-ke le nto iqedwa kancane kancane ngabantu, futhi ukushintshwa kwalesi sihloko uchungechunge lwemikhiqizo ye-cellulose ether, okusho ukuthi, ukuthuthukiswa kwezinto zokwakha ukuvikelwa kwemvelo, i-cellulose iwukuphela kohlobo lwezinto ezibonakalayo okwamanje.

Ku-putty ukumelana namanzi ihlukaniswe nge-putty eyomile ne-putty paste izinhlobo ezimbili, izinhlobo ezimbili ze-putty ngokuvamile zikhetha i-modified methyl cellulose ne-hydroxypropyl methyl izinhlobo ezimbili, ukucaciswa kwe-viscosity ngokuvamile ku-3000-60000cps phakathi kokufaneleka kakhulu, endimeni eyinhloko i-cellulose ku-putty ukugcinwa kwamanzi, ukubopha, ukugcoba, njll.

Ngenxa yokuthi ifomula ye-putty yomkhiqizi ngamunye ayifani, ezinye ziyi-calcium empunga, i-calcium ekhanyayo, usimende omhlophe, ezinye ziyi-gypsum powder, i-calcium empunga, i-calcium ekhanyayo, njll. azifani, inani elijwayelekile lokwengeza ngu-2 ‰-3 ‰ noma kunjalo.

Odongeni lokushaya lunesithukuthezi ngokwakhiwa kwengane, isisekelo sodonga sinokumunca okuthile (udonga lwezitini lwezinga le-bibulous lwalungu-13%, ukhonkolo luyi-3-5%), oluhambisana nokuhwamuka komhlaba wangaphandle, ngakho-ke uma unesithukuthezi ngengane. ukulahlekelwa kwamanzi ngokushesha okukhulu, kungaholela ekuqhekekeni noma into efana nempova, ukuze amandla e-putty abe buthaka, ngakho-ke, ngemva kokujoyina i-cellulose ether izoxazulula le nkinga.Kodwa ikhwalithi yezinto zokugcwalisa, ikakhulukazi ikhwalithi ye-gray calcium nayo ibaluleke kakhulu.Ngenxa ye-viscosity ephezulu ye-cellulose, iphinde ithuthukise ukuvuthwa kwe-putty, futhi igweme ukwenzeka kokugeleza okulenga ekwakhiweni, futhi ikhululekile futhi isindisa umsebenzi ngemva kokukhuhla.

3. udaka lukakhonkolo

Ngodaka lukakhonkolo, ukufeza amandla okugcina ngempela, kufanele wenze ukusabela kwe-cement hydration ngokuphelele, ikakhulukazi ehlobo, ekwakhiweni kokulahlekelwa kwamanzi odaka lukakhonkolo ngokushesha okukhulu, izinyathelo ezinama-hydrated ngokuphelele ekuphulukiseni amanzi, le ndlela iwukuchithwa kwemithombo yamanzi futhi ukusebenza okungalungile, ukhiye ungaphezulu nje, amanzi kanye ne-hydration namanje akukafiki ngokuphelele, ngakho-ke izindlela zokuxazulula le nkinga, Ngokhonkolo wodaka ngokuvamile ukhetha ukwengeza i-hydroxypropyl methyl cellulose noma i-methyl cellulose, ukucaciswa kwe-viscosity phakathi kuka-20000-60000cps, ukwengeza inani ka-2 ‰–3‰ noma kunjalo, izinga lokugcinwa kwamanzi linganyuswa libe ngaphezu kwama-85%, ngendlela yokusebenzisa ukhonkolo ngodaka lwempuphu eyomile exutshwe ngokulinganayo ngemva kokungeza amanzi.

4. i-gypsum yokupenda, i-gypsum yokubopha, i-caulking gypsum

Ngokuthuthuka okusheshayo kwemboni yezokwakha, isidingo sabantu sezinto zokwakha ezintsha siyanda usuku nosuku, ngenxa yokwanda kokuqwashisa kwabantu ngokuvikelwa kwemvelo kanye nokuthuthukiswa okuqhubekayo kokusebenza kahle kokwakhiwa, imikhiqizo ye-cementitious material gypsum ibe yintuthuko esheshayo.Okwamanje izimpahla ze-gesso ezivamile zine-stucco gesso, i-caking gesso, i-gesso emisiwe, i-ejenti yokufaka amakhekhe amathayili okumele ilinde.

I-Plaster iwuhlobo lwekhwalithi enhle kakhulu yodonga lwangaphakathi nophahla lokunamathisela ophahleni, ngalo ukusula udonga luthambile futhi lubushelelezi, ungawisi impushana, futhi isibopho sesisekelo siqinile, akukho mkhuba wokuqhekeka, futhi unomsebenzi wokuvimbela umlilo;I-Gypsum enamathelayo iwuhlobo olusha lokunamathisela kwebhodi elikhanyayo, i-gypsum njengento eyisisekelo, kanye nezinhlobonhlobo zezithasiselo ezenziwe ngezinto ezinamathelayo, ilungele zonke izinhlobo zezinto zokwakha ezingaphili eziboshiwe, ezingenabuthi, ezingenakunambitheka, ekuqaleni. amandla kanye nokusetha okusheshayo, ukubopha ibhodi lokwakha, izinto ezisekela ukwakhiwa kwe-block;I-ejenti yokugcwalisa umphetho we-Gypsum iyipuleti le-gypsum phakathi kwezinto zokugcwalisa igebe nodonga, ukugcwaliswa kokulungisa ukuqhekeka.

Le mikhiqizo ye-gypsum inohlu lwemisebenzi ehlukene, ngaphezu kwe-gypsum kanye nezigcwalisi ezihlobene ukuze zidlale indima, indaba eyinhloko izithasiselo ze-cellulose ether ezengeziwe zidlala indima ehamba phambili.Ngenxa yokuthi i-gesso cent ayinayo i-gesso yamanzi kanye nesenti lesigamu samanzi e-gesso, i-gesso ehlukile ihlukile kumphumela wokusebenza womkhiqizo, yanda kakhulu, ivikela amanzi, ibambezela kancane ikhwalithi enquma izinto zokwakha ze-gesso.Inkinga evamile yalezi zinto ezisetshenziswayo ukuqhekeka kwesigubhu esingenalutho, amandla okuqala awafinyeleleki, ukuxazulula le nkinga, ukukhetha uhlobo lwe-cellulose kanye ne-agent ebuyisela emuva inkinga yendlela yokusebenzisa, kulokhu, ukukhetha okujwayelekile kwe-methyl noma i-hydroxypropyl methyl. 30000–60000cps, ukungeza inani ngu-1.5 ‰–2 ‰ phakathi, ukugxila kwe-cellulose ukugcinwa kwamanzi kanye nokunciphisa ukugcotshwa.

Kodwa-ke, kulokhu ukuthembela ku-cellulose ether njengoba i-retarder ingafiki, kufanele futhi wengeze i-citric acid retarder ngemva kokusetshenziswa okuxubile ngeke kuthinte amandla okuqala.

Izinga lokugcina amanzi ngokuvamile libhekisela enanini lokulahlekelwa kwamanzi emvelo lapho ukungabikho kokumuncwa kwamanzi kwangaphandle.Uma udonga lomile, indawo engaphansi imunca amanzi futhi ukuhwamuka kwemvelo kwenza izinto zilahlekelwe amanzi ngokushesha okukhulu, futhi kuzoba nesigubhu esingenalutho kanye nokwenzeka kokuqhekeka.

Le ndlela yokusetshenziswa ukuxuba i-powder eyomile, uma ukulungiswa kwesisombululo kungabhekisela endleleni yokulungiselela isisombululo.

5. udaka lwe-insulation

Udaka lwe-thermal insulation luwuhlobo olusha lwezinto ezifakwa ngaphakathi ezindongeni ezishisayo enyakatho neChina.Kuyimpahla yodonga ehlanganiswe yi-thermal insulation material, udaka kanye ne-binder.Kule nto, i-cellulose idlala indima ebalulekile ekuhlanganiseni nasekukhuliseni amandla.Ngokuvamile, i-methyl cellulose ene-viscosity ephezulu (cishe i-10000eps) ikhethiwe, futhi umthamo ngokuvamile uphakathi kuka-2 ‰ kanye no-3 ‰.Indlela yokusetshenziswa ukuxuba impushana eyomile.

6. i-ejenti yesixhumi esibonakalayo

I-ejenti yesixhumi esibonakalayo yi-HPMC20000cps, isibophezelo sethayela singaphezu kuka-60000cps, futhi i-ejenti yesixhumi esibonakalayo isetshenziswa kakhulu njenge-thickener, engathuthukisa amandla aqinile namandla omcibisholo.