I-HPMC ingahlukaniswa ngebanga lokwakha, ibanga lokudla kanye nebanga lezemithi ngokwenhloso.Njengamanje, iningi lemikhiqizo yasekhaya ingamabanga wokwakha, futhi emabangeni okwakha inani le-putty powder likhulu kakhulu.Xuba i-HPMC powder nenani elikhulu lezinye izinto eziyimpuphu, uzixube kahle nge-mixer, bese ufaka amanzi ukuze uncibilike, khona-ke i-HPMC ingancibilika ngalesi sikhathi ngaphandle kokuhlanganiswa, ngoba wonke amakhona amancane, ingcosana ye-HPMC powder, ihlangana. amanzi.izoncibilika ngokushesha.Abakhiqizi be-putty powder kanye nodaka basebenzisa le ndlela.I-Hydroxypropyl methylcellulose (HPMC) isetshenziswa njenge-ejenti ejiya kanye ne-ejenti yokugcina amanzi kudaka lwe-putty powder.
Izinga lokushisa lejeli le-HPMC lihlobene nokuqukethwe kwayo kwe-methoxy, ukwehla kokuqukethwe kwe-methoxy ↓, kukhuphuka izinga lokushisa lejeli ↑.Uhlobo olusheshayo lwamanzi abandayo lwe-HPMC luphathwa phezulu nge-glyoxal, futhi luhlakazeka ngokushesha emanzini abandayo, kodwa aluncibiliki ngempela.Incibilika kuphela lapho i-viscosity ikhula.Izinhlobo ezincibilikayo ezishisayo aziphathwa nge-glyoxal.Uma inani le-glyoxal likhulu, ukuhlakazeka kuzoshesha, kodwa i-viscosity izokhula kancane, futhi uma inani lincane, okuphambene kuzoba yiqiniso.I-HPMC ingahlukaniswa ngohlobo olusheshayo kanye nohlobo lokuqedwa okushisayo.Umkhiqizo wohlobo olusheshayo uhlakazeka ngokushesha emanzini abandayo bese unyamalala emanzini.Ngalesi sikhathi, uketshezi alunayo i-viscosity ngoba i-HPMC ihlakazekile emanzini ngaphandle kokuhlakazeka kwangempela.Cishe imizuzu emi-2, i-viscosity yoketshezi iyanda kancane kancane, yakha i-viscous colloid esobala.Imikhiqizo encibilikayo eshisayo, lapho ihlangene namanzi abandayo, ingahlakazeka ngokushesha emanzini ashisayo futhi inyamalale emanzini ashisayo.Lapho izinga lokushisa lehlela ezingeni elithile lokushisa, i-viscosity izovela kancane kancane ize yakhe i-viscous colloid ebonakalayo.Uhlobo lwe-hot-melt lungasetshenziswa kuphela ku-putty powder nodaka.Ku-glue ewuketshezi nopende, kuzoba nesenzakalo sokuqoqa futhi ngeke sisetshenziswe.Uhlobo olusheshayo lunohlu olubanzi lwezinhlelo zokusebenza.Ingasetshenziswa ku-putty powder nodaka, kanye ne-glue ewuketshezi nopende, ngaphandle kokuphikisana.
I-HPMC ekhiqizwa indlela yokuncibilikisa isebenzisa i-toluene ne-isopropanol njengezincibilikisi.Uma ukugeza kungalungile kakhulu, kuzoba nephunga elisele.Ukusetshenziswa kwe-putty powder: izidingo ziphansi, i-viscosity yi-100,000, yanele, into ebalulekile ukugcina amanzi kahle.Ukusetshenziswa kodaka: izidingo eziphakeme, i-viscosity ephezulu, i-150,000 ingcono.Ukusetshenziswa kweglue: imikhiqizo esheshayo ene-viscosity ephezulu iyadingeka.Inani le-HPMC elisetshenziswa ekusebenzeni okusebenzayo liyahlukahluka kuye ngesimo sezulu, izinga lokushisa, izinga le-calcium yomlotha wendawo, ifomula ye-putty powder kanye "nekhwalithi edingwa amakhasimende".I-viscosity ye-hydroxypropyl methylcellulose (HPMC)-putty powder ngokuvamile i-100,000, futhi imfuneko yodaka iphakeme, futhi idinga i-150,000 ukuze ibe lula ukuyisebenzisa.Ngaphezu kwalokho, umsebenzi oyinhloko we-HPMC ukugcinwa kwamanzi, okulandelwa ukuqina.Ku-putty powder, inqobo nje uma ukugcinwa kwamanzi kuhle futhi i-viscosity iphansi (70,000-80,000), kungenzeka futhi.Yiqiniso, ukuphakama kwe-viscosity, kungcono ukugcinwa kwamanzi okuhlobene.Lapho i-viscosity idlula i-100,000, i-viscosity izothinta ukugcinwa kwamanzi.Hhayi kakhulu;labo abanokuqukethwe okuphezulu kwe-hydroxypropyl ngokuvamile banokugcinwa kwamanzi okungcono.Lena ene-viscosity ephezulu inokugcinwa kwamanzi okungcono, futhi leyo ene-viscosity ephezulu isetshenziswa kangcono odakeni lukasimende.
Ku-putty powder, i-HPMC idlala izindima ezintathu zokuqina, ukugcinwa kwamanzi kanye nokwakha.Ungabambi iqhaza kunoma yikuphi ukusabela.Isizathu sama-bubbles kungenzeka ukuthi amanzi amaningi afakwe, noma kungenzeka ukuthi ungqimba olungezansi alomile, futhi olunye ungqimba lukhishwe phezulu, futhi kulula ukwenza igwebu.Ukuqina komphumela we-HPMC ku-putty powder: i-cellulose ingajiywa ukuze imiswe, igcine iyunifomu yesixazululo futhi ingaguquki, futhi imelane nokuntenga.Umphumela wokugcina amanzi we-HPMC ku-putty powder: yenza i-putty powder yome kancane, futhi usize umlotha we-calcium ukuthi usabele ngaphansi kwesenzo samanzi.Umphumela wokwakha we-HPMC ku-putty powder: i-cellulose inomphumela wokugcoba, ongenza i-putty powder ibe nokwakhiwa okuhle.I-HPMC ayibambi iqhaza kunoma yikuphi ukusabela kwamakhemikhali, kodwa idlala indima yokusiza kuphela.
Ukulahlekelwa kwe-powder kwe-putty powder kuhlobene kakhulu nekhwalithi ye-ash calcium, futhi akuhlangene kangako ne-HPMC.I-calcium ephansi ye-calcium empunga kanye nesilinganiso esingalungile se-CaO ne-Ca(OH)2 ku-calcium empunga kuzodala ukulahleka kwempushana.Uma kunokuthile okuphathelene ne-HPMC, khona-ke uma ukugcinwa kwamanzi kwe-HPMC kumpofu, kuzophinde kubangele ukuthi impushana iwe.Ukwengeza amanzi ku-putty powder bese uyibeka odongeni ukusabela kwamakhemikhali, ngoba kwakhiwa izinto ezintsha, futhi i-putty powder odongeni ikhishwa odongeni.Phansi, igaywe ibe yimpushana, futhi iphinde isetshenziswe, ngeke isebenze, ngoba izinto ezintsha (i-calcium carbonate) zenziwe.Izingxenye eziyinhloko ze-ash calcium powder yilezi: ingxube ye-Ca(OH)2, i-CaO nenani elincane le-CaCO3, i-CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Ash calcium isemanzini nasemoyeni Ngaphansi kwesenzo se-CO2, i-calcium carbonate ikhiqizwa, kuyilapho i-HPMC igcina amanzi kuphela, isiza ukusabela okungcono kwe-ash calcium, futhi ayihlanganyeli kunoma yikuphi ukusabela ngokwayo.
Isikhathi sokuthumela: Mar-18-2023