Iqhaza le-hydroxypropyllylyll (HPMC) kuzinhlelo zokusebenza zodaka ze-gypsum

Isingeniso:

Uhlamvu lwe-gypsum, impahla yokwakha esetshenziswa kabanzi edume ngokuguquguquka okuguquguqukayo kanye nokukhululeka kwesicelo, ibone ukuthuthuka okubalulekile eminyakeni yamuva nje ngokufakwa kwezithasiselo ezifana ne-hydroxypropyll methylcellulose (HPMC). I-HPMC, i-cellulose ether derivative, inikeza uhla lwezakhiwo ezifiselekayo ezithuthukisa ukusebenza kanye nokusebenza kokwenziwa kohlamvu lwe-gypsum. Le ndatshana idlulela endimeni ehlukahlukene ye-HPMC ku-Gypsum Plaster uchungechunge, icacisa izici zayo zamakhemikhali, izimfanelo ezisebenzayo, kanye nemiphumela esebenzayo.

Ukwakheka kwamakhemikhali nezakhiwo ze-HPMC:

I-Hydroxypropylm methylcellulose ihlelwe ngokuguqulwa kwamakhemikhali kwe-cellulose, okuholele ku-polymer engenamanzi enezakhiwo ezihlukile. Isakhiwo saso samakhemikhali sinamaketanga we-cellulose backbone anama-methyl kanye ne-hydroxypropyls. Izinga lokufaka esikhundleni se-methyl namaqembu we-hydroxypropyl kakhulu lithonya kakhulu izakhiwo ze-HPMC, kufaka phakathi i-viscosity, i-solubity yamanzi, kanye namakhono okwakha amafilimu. I-HPMC ibonisa izakhiwo ezinhle kakhulu zokugcina amanzi, yakha izixazululo ezizinzile ze-colloidal ezinomthelela ekusebenzeni ngcono nasekuhlosweni kwezicelo ze-gypsum.

Imisebenzi ye-HPMC ku-gypsum plaster:

Ukugcinwa kwamanzi: I-HPMC isebenza njenge-hydrophilic polymer, yakha ifilimu evikelayo ezungeze izinhlayiya ze-gypsum, ngaleyo ndlela ivimbele ukulahleka kwamanzi ngokushesha ngesikhathi senqubo yokusetha. Lokhu kuthuthukisa ukusebenziseka kodaka, okuvumela izikhathi zohlelo lokusebenza ezinwetshiwe nokwehlisa ubungozi bokuqhekeka noma ukushwabana.

Ukuguqulwa kwe-Rheelogy: Ukungezelelwa kwe-HPMC kuthonya ukusebenza kwe-hercheological of gypsum plaster, ukudlulisela izici ze-Pseudoplastic noma ze-Shear-Twning. Lokhu kuphumela ekusakazeni okwenziwe ngcono, kuncishiswe i-sagging, futhi kuthuthukiswe izakhiwo ze-thixotropic, lula kalula uhlelo lokusebenza futhi uzuze ukuqedwa komhlaba okufanayo.

Ukuthuthukiswa kwesikhonkwane: I-HPMC ithuthukisa ukunamathela kodaka lwe-gypsum ezitolo ezahlukahlukene, kufaka phakathi ubumbano, ukhonkolo, kanye ne-drywall. Ukwakheka kwesikhombimsebenzisi esizinzile phakathi kosonga kanye nokwengeza amandla okukhuthaza amandla amabhondi futhi kunciphise ukunxusa noma ukungcola, ukuqinisekiswa ukuqina kokuqina kwesikhathi eside kanye nobuqotho besikhathi eside.

Ukusetha isikhathi sokulawula: Ngokulawula ama-hydration kinetics we-gypsum, i-HPMC inika amandla okulawula okuqondile esikhathini sokusetha kokuqanjwa kwamapulangwe. Lokhu kuvumela amaphrofayili ezenziwe ngezifiso ahlelwe ngendlela ehambelana nezidingo ezithile zohlelo lokusebenza, ezisukela kusuka ekuhlelweni okusheshayo kwamaphrojekthi abucayi isikhathi sokuhlelwa isikhathi eside sokubonisa imininingwane eyinkimbinkimbi noma umsebenzi wokuhlobisa.

Izinzuzo ze-HPMC ku-Gypsum Plaster Selizayo:

Ukufakwa kwe-HPMC kunikeza izinzuzo eziningana zokuqanjwa kwama-gypsum plaster:

Ukusebenza okwenziwe ngcono: Ukugcinwa kwamanzi okuthuthukisiwe kanye nezinto ezimbongini eziholela ekubusheleleni, ukuxubana okuphathelene nokuphathwa okuthe xaxa, lula ukusetshenziswa kwesicelo kanye nokunciphisa imfucuza yezinto ezibonakalayo.

Ukuqina Okuthuthukisiwe: Ukunamathelisa okuphezulu nokusetha isikhathi Ukulawula kufaka isandla ukukhulisa amandla e-bond, ukuncipha kokuqhekeka, kanye nokuphikiswa okuthuthukile kwezinto zokushintshashintsha komswakama okufana nomswakama nokushintsha kwezokushisa.

Izicelo eziguquguqukayo

Ukucatshangelwa okusebenzayo kanye nemihlahlandlela yesicelo:

Lapho kufakwa i-HPMC eyakhiwe ngokwenza ama-gypsum plaster, kufanele kubhekwe izici eziningana zokwenza ngcono ukusebenza futhi kuqinisekiswe ukuhambisana:

Ukukhetha kwebanga le-HPMC: Ukukhetha kwebanga le-HPMC kufanele kususelwe kwizidingo ezithile zohlelo lokusebenza, kucatshangelwa izici ezinjengokuvulekezwa, ukugcinwa kwamanzi, nokubeka ukulawula isikhathi.

Ukuhlolwa kokuvumelana: Ukuhlolwa kokuhambisana phakathi kwe-HPMC nezinye izithasiselo noma ama-admikitures kubalulekile ukuhlola ukusebenzisana okubangelwa futhi uqinisekise ukusebenza okufisayo kokwakheka kwamapulasi.

Izinqubo Zokuxuba: Izinqubo ezifanele zokuxuba, kufaka phakathi ukulandelana kokungezwa kwezithako kanye nesikhathi sokuxubana, kufanele kutholakale ukuguquguquka kwezakhiwo ze-HPMC futhi zivikele ukuguquguquka kwezindawo zokusebenzisa, okubandakanya ukulandelwa kwesikhathi, kanye nokulawula isikhathi, kubalulekile ukuqapha ukuvumelana futhi kuqinisekiswe ukuhambisana namazinga okusebenza.

I-Hydroxypropylm methylcellulose (HPMC) idlala indima ebaluleke kakhulu ekuthuthukiseni ukusebenza, ukusebenziseka, nokuqina kokuqanjwa kwama-gypsum plaster. Ngokuhlanganiswa kwayo okuyingqayizivele kokugcinwa kwamanzi, ukuguqulwa kwe-Rheology, ukuthuthukiswa kokunamathela, kanye nokusetha isikhathi sokulawula, i-HPMC inikela ekuguqukeni nasekuhlotsheni nasekuthembekeni kochungechunge lwe-gypsum plaster kuzo zonke izinhlelo ze-gypsum plaster kuzo zonke izinhlelo zokwakha ezahlukahlukene. Ngokuqonda imisebenzi nezinzuzo ze-HPMC, abasebenza ngodokotela bangawenza kahle ukwakhiwa kwama-pillus ukuze bahlangabezane nezidingo ezivelayo zamaphrojekthi wanamuhla wokwakha ngenkathi efinyelela amazinga aphakeme kanye nokusebenza.