HPMC ishobora kugabanywamo urwego rw'ubwubatsi, urwego rw'ibiribwa n'urwego rw'imiti hakurikijwe icyo igamije. Kuri ubu, inyinshi mu bicuruzwa byo mu rugo ni urwego rw'ubwubatsi, kandi mu rwego rw'ubwubatsi, ingano y'ifu ya putty ni nini cyane. Vanga ifu ya HPMC n'ibindi bintu byinshi birimo ifu, ubivange neza ukoresheje icyuma givanga, hanyuma wongeremo amazi kugira ngo ishonge, hanyuma HPMC ishobora gushonga muri iki gihe nta guhurirana, kuko buri mfuruka nto, agace gato k'ifu ya HPMC, gahura n'amazi. Ihita ishonga. Abakora ifu ya putty n'iy'ibumba bakoresha ubu buryo. Hydroxypropyl methylcellulose (HPMC) ikoreshwa nk'ikintu gikomeza ubukonje no kubika amazi muri putty powder mortar.
Ubushyuhe bwa gel ya HPMC bufitanye isano n'ingano yayo ya methoxy, uko ingano ya methoxy iba iri hasi ↓, niko ubushyuhe bwa gel buba buri hejuru ↑. Ubwoko bwa HPMC bukonje buvurwa na glyoxal ku buso, kandi bukwirakwira vuba mu mazi akonje, ariko ntibushonga mu by'ukuri. Bushonga gusa iyo ubushyuhe bwiyongeye. Ubwoko bwa hot melt ntibuvurwa na glyoxal ku buso. Iyo ingano ya glyoxal ari nini, gukwirakwira kw'amazi bizaba vuba, ariko ubushyuhe bwiyongera buhoro buhoro, kandi niba ingano ari nto, ibinyuranye n'ibyo bizaba. HPMC ishobora kugabanywamo ubwoko bwa instant type n'ubwoko bwa hot-exssolution. Ibicuruzwa bya instant type bisakara vuba mu mazi akonje bikabura mu mazi. Muri iki gihe, amazi nta bushyuhe afite kuko HPMC isakara gusa mu mazi nta gushonga nyako. Mu minota 2, ubushyuhe bw'amazi buriyongera buhoro buhoro, bugakora colloid ibonerana. Ibicuruzwa bya hot-melt, iyo bihuye n'amazi akonje, bishobora gukwirakwira vuba mu mazi ashyushye bikabura mu mazi ashyushye. Iyo ubushyuhe bugabanutse bukagera ku bushyuhe runaka, ubushyuhe buzagenda bugaragara buhoro buhoro kugeza ubwo bukoze colloid ibonerana kandi idafite ubushyuhe. Ubwoko bwa hot-melt bushobora gukoreshwa gusa mu ifu ya putty na mortier. Muri kole y'amazi n'irangi, hazabaho ibintu byo gushyira mu matsinda kandi ntibishobora gukoreshwa. Ubwoko bwa instante bufite uburyo bwinshi bwo gukoreshwa. Bushobora gukoreshwa mu ifu ya putty na mortier, ndetse na kole y'amazi n'irangi, nta binyuranyo na bimwe.
HPMC ikorwa n'uburyo bwo gushonga ikoresha toluene na isopropanol nk'ibintu bisukura. Iyo gusukura bitameze neza cyane, hazabaho impumuro isigaye. Gukoresha ifu ya putty: ibisabwa ni bike, ubukana ni 100.000, birahagije, icy'ingenzi ni ugukomeza amazi neza. Gukoresha sima: ibisabwa byinshi, ubukana bwinshi, 150.000 ni byiza kurushaho. Gukoresha kole: ibikoresho byihuse bifite ubukana bwinshi birakenewe. Ingano ya HPMC ikoreshwa mu bikorwa bifatika iratandukanye bitewe n'ikirere gikikije, ubushyuhe, ubwiza bwa kalisiyumu y'ivu ryo mu gace runaka, formula y'ifu ya putty n' "ubwiza busabwa n'abakiriya". Ubukana bwa hydroxypropyl methylcellulose (HPMC)-putty powder muri rusange ni 100.000, kandi ibisabwa kuri sima ni byinshi, kandi ikenera 150.000 kugira ngo yorohe kuyikoresha. Byongeye kandi, inshingano nyamukuru ya HPMC ni ukubika amazi, hagakurikiraho gukuba. Mu ifu ya putty, igihe cyose amazi agumana neza kandi ubukana buri hasi (70.000-80.000), birashoboka. Birumvikana ko uko ubukana bwiyongera, ni ko amazi agumana neza. Iyo ubukana burenze 100.000, ubukana buzagira ingaruka ku bukana bw'amazi. Ntabwo ari bwinshi cyane; abafite ubukana bwinshi bwa hydroxypropyl muri rusange baba bafite ubukana bwiza bw'amazi. Ubukana bwinshi butuma amazi agumana neza, naho ubukana bwinshi bukoreshwa neza mu gusya sima.
Mu ifu ya putty, HPMC igira inshingano eshatu zo gukurura, kubika amazi no kubaka. Ntukifatanye mu bikorwa ibyo ari byo byose. Impamvu y'ibibyimba ishobora kuba ari uko hashyizwemo amazi menshi cyane, cyangwa bishobora kuba urwego rwo hasi rutari rwumye, hanyuma urundi rwego rugakurwa hejuru, kandi byoroshye kubifuro. Ingaruka zo gukurura HPMC mu ifu ya putty: cellulose ishobora gukurura kugira ngo ihagarare, ikomeze kuba imwe kandi ihamye, kandi irinde kugwa. Ingaruka zo kubika amazi za HPMC mu ifu ya putty: bituma ifu ya putty yumuka buhoro buhoro, kandi igafasha kalisiyumu y'ivu gukora iyo amazi akoze. Ingaruka zo kubaka za HPMC mu ifu ya putty: cellulose ifite ingaruka zo gusiga amavuta, bishobora gutuma ifu ya putty igira imiterere myiza. HPMC ntiyitabira ibikorwa ibyo ari byo byose bya shimi, ahubwo igira uruhare rw'inyongera gusa.
Gutakaza ifu y'ifu ya putty ahanini bifitanye isano n'ubwiza bwa calcium y'ivu, kandi ntaho bihuriye na HPMC. Ingano nke ya calcium y'imvi hamwe n'ikigereranyo kidakwiye cya CaO na Ca(OH)2 muri calcium y'imvi bizatera gutakaza ifu. Niba bifitanye isano na HPMC, niba amazi ya HPMC adahagije, bizatuma ifu igwa. Kongera amazi ku ifu ya putty no kuyashyira ku rukuta ni ingaruka ya shimi, kuko ibintu bishya bibaho, kandi ifu ya putty ku rukuta ikurwa ku rukuta. Hasi, igasenywa ihinduka ifu, kandi ikongera gukoreshwa, ntabwo izakora, kuko ibintu bishya (calcium carbonate) biba byarakozwe. Ibice by'ingenzi bigize ifu ya kalisiyumu y'ivu ni: uruvange rwa Ca(OH)2, CaO n'ingano nto ya CaCO3, CaO+H2O=Ca(OH)2—Ca(OH)2+CO2=CaCO3↓+H2O Kalisiyumu y'ivu iri mu mazi no mu mwuka Mu gihe cya CO2, kalisiyumu karubone irakorwa, mu gihe HPMC igumana amazi gusa, igafasha mu buryo bwiza bwa kalisiyumu y'ivu, kandi ntigira uruhare mu buryo ubwo aribwo bwose.
Igihe cyo kohereza ubutumwa: Werurwe-18-2023