HPMC ikoreshwa mu gupfunyika mu rukuta/gupfunyika mu gitambaro

HPMC, cyangwa Hydroxypropyl Methyl Cellulose, ikoreshwa mu buryo butandukanye bitewe n’ubwoko bwayo. Mu Bushinwa, ikoreshwa cyane mu bwubatsi. By’umwihariko, mu gukora putty yo ku rukuta cyangwa skim coat, ifu nyinshi ya skim coat, harimo HPMC n’ibindi bikoresho by’ifu, iravangwa neza hanyuma igashonga hakoreshejwe amazi. Ubu buryo burinda kwivanga bitewe no gushonga kw’uduce twa HPMC mu mazi ako kanya.

Ubushyuhe bwa gel ya HPMC buterwa n'ingano yayo ya methoxy; ingano nto ya methoxy ituma ubushyuhe bwa gel bwiyongera. HPMC ikonje ishongera vuba mu mazi akonje, ivuwe na glyoxal, ikwirakwira vuba mu mazi akonje, igaragaza ubushyuhe bwinshi ariko ntishonga burundu. Ku rundi ruhande, HPMC ishongera vuba mu mazi akonje, idasukuwe na glyoxal, ikwirakwira vuba ariko ifite ubushyuhe buke bukabije. HPMC ishobora gushyirwa mu byiciro by'ubwoko bushongera vuba n'ubwoko bushongera bushyushye. Ibicuruzwa bihita bikwirakwira vuba mu mazi akonje kandi bigatera ubushyuhe buhoro buhoro, bigatuma habaho colloid igaragara neza. Ubwoko bushongera bushyushye, bukwiriye gupfukwa no gusigwa, bugaragaza kole y'amazi n'igipfundikizo.

Gukora HPMC bisaba uburyo bwo gushonga hakoreshejwe toluene cyangwa isopropyl alcohol. Gukoresha ifu ya skim coat bisaba ubushyuhe buke, hafi 10.000, hibandwa ku kurinda amazi. Gukoresha sima bisaba ubushyuhe bwinshi, hafi 15.000, mu gihe gukoresha kole bisaba ko ibintu byihuse bifite ubushyuhe bwinshi. Ingano nyayo ya HPMC ikoreshwa iratandukanye bitewe n'ikirere, ubushyuhe bw'ibidukikije, ubwiza bwa kalisiyumu y'umukara mu gace runaka, formula ya skim coat, n'ubuziranenge bw'abakiriya.

HPMC, ifite ubushyuhe bwa 100.000 mu ifu ya skim coat, igira uruhare runini mu kubika no gukurura amazi. Ariko, mu bikorwa bifatika, ubushyuhe bwa 70.000 kugeza 80.000 burakwiriye. Akamaro k'ingenzi ka HPMC mu bushyuhe bwa skim coat karimo gukurura, kubika amazi, no gufasha mu bwubatsi. Ntigira uruhare mu bikorwa bya shimi ahubwo igira uruhare mu gukumira ikorwa ry'ibibyimba binyuze mu kwemeza ko byumye neza.

Isano iri hagati y’ifu y’umunyungugu wo ku rukuta/ifu y’umunyungugu n’ubwiza bwa kalisiyumu y’ivu ni ingenzi, mu gihe ingaruka za HPMC ari nkeya. Uruhare rwa HPMC mu kubika amazi rushobora kugira ingaruka ku ifu imanuka, kandi uburyo ikorana n’amazi mu gihe cyo kuyikoresha ifu isohokamo ikoresheje imiti, bigatuma habaho ikintu gishya (calcium carbonate). Ariko, HPMC ubwayo ntabwo igira uruhare muri ibi bikorwa.

Amafuru atandukanye y’ifu yo mu rukuta ajyanye n’ibikenewe bitandukanye, nka putty isanzwe y’imbere mu rukuta, putty ikomeye cyane y’imbere mu rukuta, putty idashobora amazi, putty ikomeye cyane y’inyuma mu rukuta, putty idashobora kozwa n’ingufu, na putty ikoreshwa mu rukuta irwanya uduce duto, n’ibindi. Buri fomula igaragaza ijanisha rya Powder ya Redispersible Polymer (RDP), ifu y’udusimba tubiri, ifu ya kalisiyumu y’ikijuju, sima yera, na HPMC, byagenewe gukoreshwa mu buryo bwihariye nka mortier, kole, cyangwa gusiga.