Njengamanje, ikhwalithi ye-hydroxypropyl methylcellulose yasekhaya iyahlukahluka kakhulu, futhi intengo iyahlukahluka kakhulu, okwenza kube nzima kumakhasimende ukwenza ukukhetha okulungile. I-HPMC eguquliwe yenkampani efanayo yakwamanye amazwe ingumphumela weminyaka eminingi yocwaningo. Ukwengezwa kwezinto ezilandelwayo kungathuthukisa ukusebenza kokwakhiwa futhi kuthuthukise ukusebenza. Yiqiniso, kuzothinta ezinye izakhiwo, kodwa ngokuvamile kusebenza kahle; Inhloso kuphela yokwengeza ezinye izithako ukunciphisa izindleko, okuholela ekunciphiseni kakhulu ukugcinwa kwamanzi, ukuhlangana kanye nezinye izakhiwo zomkhiqizo, okuholela ezinkingeni eziningi zekhwalithi yokwakha.
Kunezinhlobo ezilandelayo zomehluko phakathi kwe-HPMC emsulwa kanye ne-HPMC exubile:
1. I-HPMC emsulwa ithambile emehlweni futhi inobukhulu obuphansi, kusukela ku-0.3-0.4g/ml; i-HPMC exubile inoketshezi olungcono futhi izwakala inzima, okusobala ukuthi ihlukile kumkhiqizo wangempela ngokubukeka.
2. Isixazululo samanzi se-HPMC esimsulwa sicacile, sidlulisa ukukhanya okuphezulu, futhi izinga lokugcina amanzi ≥ 97%; isixazululo samanzi se-HPMC esixubile sinamafu, futhi izinga lokugcina amanzi kunzima ukulifinyelela ku-80%.
3. I-HPMC emsulwa akufanele inuke i-ammonia, isitashi kanye notshwala; i-HPMC exutshwe ne-alcohol ivame ukunuka zonke izinhlobo zamaphunga, noma ngabe ayinambitheki, izozwakala inzima.
4. Impuphu ye-HPMC emsulwa inemicu ngaphansi kwe-microscope noma ingilazi yokukhulisa; i-HPMC exutshwe ingabonakala njengezinto eziqinile noma amakristalu ngaphansi kwe-microscope noma ingilazi yokukhulisa.
Ukuphakama okungenakunqotshwa okungu-200,000?
Ochwepheshe abaningi basekhaya kanye nezazi bashicilele amaphepha akholelwa ukuthi ukukhiqizwa kwe-HPMC kunqunyelwe ukuphepha nokuvala imishini yasekhaya, inqubo yodaka kanye nokukhiqizwa okuphansi komfutho, futhi amabhizinisi avamile awakwazi ukukhiqiza imikhiqizo enobuthi obungaphezu kuka-200,000. Ehlobo, akunakwenzeka ngisho nokukhiqiza imikhiqizo enobuthi obungaphezu kuka-80,000. Bakholelwa ukuthi lokho okubizwa ngokuthi imikhiqizo engu-200,000 kumelwe kube imikhiqizo mbumbulu.
Imibono yochwepheshe ayiyona into engacabangeki. Ngokwesimo sokukhiqiza sasekhaya sangaphambilini, iziphetho ezingenhla zingafinyelelwa ngempela.
Isihluthulelo sokwandisa i-viscosity ye-HPMC ukuvalwa okuphezulu kwe-reactor kanye nokusabela okuphezulu komfutho kanye nezinto zokusetshenziswa ezisezingeni eliphezulu. Umoya ophezulu uvimbela ukuwohloka kwe-cellulose yi-oxygen, futhi isimo sokusabela okuphezulu komfutho sikhuthaza ukungena kwe-etherification agent ku-cellulose futhi siqinisekisa ukufana komkhiqizo.
Inkomba eyisisekelo ye-200000cps hydroxypropyl methylcellulose:
Isixazululo samanzi esingu-2% i-viscosity engu-200000cps
Ubumsulwa bomkhiqizo ≥98%
Okuqukethwe kwe-Methoxy 19-24%
Okuqukethwe kwe-Hydroxypropoxy: 4-12%
Izici ze-200000cps hydroxypropyl methylcellulose:
1. Izakhiwo ezinhle kakhulu zokugcina amanzi kanye nokuqina ukuqinisekisa ukumuncwa okuphelele kwe-slurry.
2. Amandla aphezulu okubopha kanye nomphumela obalulekile wokungenisa umoya, kuvimbela ngempumelelo ukushwabana nokuqhekeka.
3. Libazisa ukukhishwa kokushisa kokumuncwa kwesimende, libazisa isikhathi sokusetha, futhi ulawule isikhathi esisebenzayo se-samente mortar.
4. Thuthukisa ukuqina kwamanzi kwe-mortar epompiwe, uthuthukise i-rheology, futhi uvimbele ukuhlukaniswa kanye nokopha.
5. Imikhiqizo ekhethekile, ehlose ukwakhiwa kwesimo sezulu esishisayo ehlobo, ukuqinisekisa ukumuncwa kahle kwe-slurry ngaphandle kokususwa kwe-delanitation.
Ngenxa yokulawulwa kwemakethe okuxegayo, ukuncintisana embonini ye-mortar kuya ngokuya kuba kubi kakhulu. Ukuze banakekele imakethe, abanye abathengisi baxube inani elikhulu lezinto ezishibhile ukuze bakhiqize i-cellulose ether eshibhile. Lapha, umhleli ubophekile ukukhumbuza amakhasimende ukuthi angalandeli amanani aphansi ngokungazi, ukuze angakhohliswa. Ukukhohliswa, kuholele ezingozini zobunjiniyela, futhi ekugcineni ukulahlekelwa kudlula izinzuzo.
Izindlela ezivamile zokuphanga kanye nezindlela zokuhlonza:
(1) Ukwengezwa kwe-amide ku-cellulose ether kungakhuphula ngokushesha i-viscosity yesisombululo se-cellulose ether, okwenza kube nzima ukuyibona nge-viscometer.
Indlela yokuhlonza: Ngenxa yezici zama-amides, lolu hlobo lwesisombululo se-cellulose ether luvame ukuba nesenzakalo sokuhlanganisa, kodwa i-cellulose ether enhle ngeke ivele nesenzakalo sokuhlanganisa ngemva kokuncibilika, isixazululo sifana nejeli, okuthiwa sinamathela kodwa asixhunyiwe.
(2) Faka isitashi ku-cellulose ether. Isitashi ngokuvamile asincibiliki emanzini, futhi isixazululo sivame ukuba nokukhanya okuncane.
Indlela yokuhlonza: Faka isixazululo se-cellulose ether nge-iodine, uma umbala uphenduka ube luhlaza okwesibhakabhaka, kungacatshangwa ukuthi kunesitashi esengeziwe.
(3) Faka i-polyvinyl alcohol powder. Njengoba sonke sazi, intengo yemakethe ye-polyvinyl alcohol powder efana ne-2488 kanye ne-1788 ivame ukuba phansi kuneye-cellulose ether, futhi ukuxuba i-polyvinyl alcohol powder kunganciphisa izindleko ze-cellulose ether.
Indlela yokuhlonza: Lolu hlobo lwe-cellulose ether luvame ukuba yizinhlayiya futhi lube lukhuni. Luncibilika ngokushesha ngamanzi, khetha ikhambi ngenduku yengilazi, kuzoba khona into esobala kakhulu yokuhlanganisa izintambo.
Isifinyezo: Ngenxa yesakhiwo sayo esikhethekile namaqembu ayo, ukugcinwa kwamanzi kwe-cellulose ether akukwazi ukushintshwa ezinye izinto. Kungakhathaliseki ukuthi uhlobo luni lokugcwalisa oluxutshwe kulo, uma nje luxutshwe ngobuningi, ukugcinwa kwamanzi kwalo kuzoncishiswa kakhulu. Inani le-HPMC elinobukhulu obujwayelekile obungu-10W ku-mortar evamile lingu-0.15 ~ 0.2 ‰, kanti izinga lokugcinwa kwamanzi lingu->88%. Ukopha kukhulu kakhulu. Ngakho-ke, izinga lokugcinwa kwamanzi liyisibonakaliso esibalulekile sokulinganisa ikhwalithi ye-HPMC, kungakhathaliseki ukuthi ilungile noma imbi, uma nje ingezwa ku-mortar, kuzocaca ngokushesha.
Isikhathi sokuthunyelwe: Meyi-10-2023