(1) IHydroxypropyl methylcellulose (HPMC) ihlukaniswe yaba uhlobo olujwayelekile (uhlobo oluncibilikayo olushisayo) kanye nohlobo olusheshayo lwamanzi abandayo:
Uhlobo olujwayelekile, ama-clumps emanzini abandayo, kodwa angahlakazeka ngokushesha emanzini ashisayo futhi anyamalale emanzini ashisayo.Lapho izinga lokushisa lehlela ezingeni elithile lokushisa, i-viscosity izovela kancane kancane ize yakhe i-viscous colloid ebonakalayo.Isizathu sokuhlangana nezigaxa zamanzi abandayo yilesi: impushana ye-cellulose yangaphandle ihlangana namanzi abandayo, ngokushesha iba yi-viscous, ijiye ibe i-colloid esobala, kanti i-cellulose ngaphakathi izungezwe i-colloid ngaphambi kokuthi ihlangane namanzi, futhi iseyimpushana. ifomu., kodwa ancibilike kancane.Imikhiqizo evamile ayidingi ukusebenzisa amanzi ashisayo ekusebenzeni okusebenzayo, ngoba i-putty powder noma udaka i-powder eqinile.Ngemuva kokuxuba okomile, i-cellulose ihlukaniswa nezinye izinto.Uma ihlangana namanzi, izovele ibe yi-viscous futhi ngeke yakhe iqembu.
Umkhiqizo osheshayo uhlakazeka ngokushesha lapho uhlangana namanzi abandayo bese unyamalala emanzini.Ngalesi sikhathi, uketshezi alunayo i-viscosity, ngoba i-HPMC ihlakazeka emanzini ngaphandle kokuhlakazeka kwangempela.Ukusuka cishe imizuzu emi-2, i-viscosity yoketshezi ikhula kancane kancane, yakhe i-viscous colloid esobala.
(2) Ububanzi bokusetshenziswa kohlobo olujwayelekile kanye nohlobo olusheshayo: uhlobo olusheshayo lusetshenziswa kakhulu kuglue owuketshezi, izimonyo, nokokugeza izingubo.Ngenxa yokuthi ingaphezulu le-cellulose esheshayo liphathwe nge-dialdehyde, ukugcinwa kwamanzi nokuzinza akukuhle njengemikhiqizo evamile.Ngakho-ke, ku-powder eyomile njenge-putty powder nodaka, sincoma imikhiqizo evamile.
Indlela yokukhetha i-viscosity efanele ye-cellulose:
1. Okokuqala, sidinga ukuqonda indima ye-cellulose ether: ukugcinwa kwamanzi nokuqina.
2. Imboni ngokuvamile ingasho i-viscosity engu-100,000, i-viscosity engu-150,000, kanye ne-viscosity engu-200,000.Zisho ukuthini lezi zilinganiso?Uyini umthelela wamayunithi ahlukene okulinganisa emkhiqizweni?
(1) Okokugcina amanzi
Ukusebenza kokugcinwa kwamanzi kuyanda ngokukhula kwe-viscosity, kodwa ngokwezimo zemakethe, lapho i-viscosity ye-cellulose idlula i-100,000, ukusebenza kokugcinwa kwamanzi kuyanda nge-viscosity.
(2) Ukujiya
Ngokuvamile, lapho okuqukethwe okusebenzayo kujwayelekile, uma iyunithi inkulu, kuba ngcono ukusebenza kokuqina.Okusho ukuthi, i-viscosity ephezulu idinga inani elikhulu lamanzi, futhi izinga lokugcinwa kwamanzi alishintshi kakhulu.
3. Izinkampani eziningi zisebenzisa izilinganiso ezihlukanisiwe, okungukuthi, izinsimbi ezihlukene kanye nokucaciswa kwe-cellulose ether kuhlukile, kodwa ezimbonini ezincane, kuzokwandisa izindleko.Izimboni eziningi ezincane zisebenzisa i-fiber plastic ether eyodwa kuphela ukuze zisetshenziswe ngokujwayelekile, okungukuthi, umthamo uhlukile.!Ngokuvamile, amayunithi ayi-100,000 asetshenziswa kakhulu.
4. Ngokuvamile i-viscosity engu-200,000 isetshenziselwa udaka lwe-bonding, futhi i-100,000 isetshenziselwa ukuzilinganisa, i-100,000 yokuzilinganisa, kanye ne-80,000 yokuplasta.Yiqiniso, kunqunywa ngokuyinhloko izinga lokugcinwa kwamanzi.Asincomi amakhasimende ukuthi asebenzise i-viscosity ephezulu.Isibonelo, kumayunithi angu-200,000, ukuphakama kwe-viscosity ye-cellulose ether, ukungazinzi kakhulu, futhi kunemikhiqizo eminingi yomgunyathi.Amanye amakhasimende abika ukuthi umkhiqizo wangempela we-20W unamathela kakhulu futhi ukwakhiwa akukuhle kakhulu.
5. Ukugcinwa kwamanzi kwe-cellulose ether esetshenziswa odakeni kuhlukile ekugcinweni kwamanzi kwe-cellulose ether ocwaningweni.Ngisho noma ukugcinwa kwamanzi kwe-cellulose ether ngokwayo kukuhle, akusho ukuthi umphumela odakeni uqinisekile Yebo, kunqunywa ngokuyinhloko ukusebenza kwezithasiselo ezisele kufomula, inani lokwengezwa, kanye nomphumela wokuxuba. imishini yodaka olomile lwempushana.Kungcono ukuyisebenzisa odongeni ukuze ubone umphumela.Leli yiqiniso!
Isikhathi sokuthumela: Feb-08-2023