Igipimo cya HPMC Hydroxypropyl methyl cellulose na sima ni ikihe?
Sima yo mu bwoko bwa sima idakoresha amazi, imiterere yayo ishingiye ku buremere bukurikira bw'ibikoresho fatizo byakozwe: Beto 30-340, ifu y'amatafari y'imyanda y'ubwubatsi 40-50, fibre ya lignin 20-24, calcium formate 4-6, hydroxypropyl methyl cellulose 7-9, ifu ya silicon carbide 40-45, ifu ya calcium hydroxide 10-20, ifu ya corundum y'umukara 10-12, ifu yumye ya silt y'umujyi munini 30-35, ubutaka bwa Datong city 40-45, aluminium sulfate 4-6, carboxymethyl Base starch 20-24, ibikoresho byahinduwe nanotechnology carbon powder 4-6, amazi 600-650; Sima yo mu bwoko bwa sima idakoresha amazi y'iki gicuruzwa ifite ubushyuhe bukomeye, irwanya umuriro neza, ifatanya neza n'urukuta, imbaraga zo gukanda, ubushobozi bwo gusaza neza, irinda ibidukikije neza, irinda ubushuhe neza, irwanya imyakura, irinda kugwa hasi. Uyu munsi turaganira ku buryo umuti w’amazi wa hydroxypropyl methyl cellulose umeze ute? Reka tubigeho mu by’ukuri.
1. Uburemere bwa molekile, ubushyuhe bw'umuti w'amazi, igipimo cyo gukata n'uburyo bwo kugerageza bwa eteri ya selulose; 2. Uko ubushyuhe bw'impinduka mu kirahuri burushaho kuba bwinshi, ni ko uburemere bwa molekile burushaho kuba bwinshi, ubushyuhe bw'umuti buba buri hejuru mu buryo busanzwe; 3. Uko eteri ya selulose irushaho kuba nyinshi, ni ko ubushyuhe bw'umuti burushaho kuba bwinshi, bityo mu gushyira mu bikorwa ikoreshwa tugomba kwita ku gipimo gikwiye cyo gushyiramo, gukumira ko ishyirwamo ari rinini cyane, kandi bigira ingaruka ku buryo butaziguye ku miterere ya sima na sima; 4. Kimwe n'ibindi byinshi mu bisubizo, ubushyuhe buzagabanuka uko ubushyuhe bwiyongera, hamwe n'uko eteri ya selulose irushaho kuba nyinshi, ni ko ubushyuhe burushaho kwangirika; Byongeye kandi, ingaruka nyazo zo gukomera nazo ziratandukana bitewe n'ingano y'amazi akoreshwa muri sima ya epoxy.
Hydroxypropyl methyl cellulose aqueous solution viscosity nayo ishobora kuba ingenzi mu gutanga ibitekerezo ku miterere ya ether ya cellulose, uko viscosity y'amazi irushaho kuba nyinshi, ibikoresho byayo bya epoxy sima birushaho kuba byiza inyuma y'umusaruro wa plate gelling, ariko iyo viscosity ari nini cyane, byangiza epoxy sima fatizo ako kanya ihinduka amazi n'ubushobozi bwo kuyishyira mu bikorwa. Ku bijyanye na mortier yigenga ifite amazi menshi, viscosity ya ether ya cellulose izagaragazwa ko iri hasi.
Umuti w'amazi wa eteri ya selulosi ni umubiri wa pseudoplastic, mu cyiciro cya nyuma cyo kumenyekana kw'umuvuduko wo gukata uba munini, ubushyuhe buba buke.
Bityo rero, muri make ni ibi bikurikira: guhuza kwa sima bizagabanuka bitewe n'imbaraga zo hanze, ibyo bikaba ingirakamaro ku bwubatsi bw'ubuhanga inyuma, ariko umuti w'amazi wa eteri ya selulose mu gihe cy'agaciro gake cyane k'umusaruro, hazabaho imiterere y'amazi atari Newtonian, ahubwo, iyo agaciro k'umusaruro kiyongereye, umuti w'amazi uzagaragaramo imiterere y'amazi ya pseudoplastic.
Kubika amazi muri hydroxypropyl methyl cellulose ni kimwe mu bintu by'ingenzi bya hydroxypropyl methyl cellulose. Igipimo cy'amazi mu bicuruzwa bivanze n'ibikomoka kuri plaster kigira ingaruka ku bushyuhe bwa gazi, ubushyuhe n'umuvuduko w'igitutu. Kubwibyo, mu bihe bitandukanye, hamwe na hydroxypropyl methyl cellulose, ingano imwe y'ubushobozi bw'amazi mu bicuruzwa ifite itandukaniro.
Muri rusange, uko ubushyuhe bwa hydroxypropyl methyl cellulose burushaho kuba bwinshi, niko ingaruka nyazo zo kubika amazi zizaba nziza, ariko ingaruka zo kubika amazi zizagabanuka nyuma y’uko ubushyuhe burenze 100.000 Mpa. s. Iyo ubushyuhe bwa HYDROXYpropyl methyl cellulose burenze 100.000, igipimo cyo kubika amazi gishobora kongerwa cyane binyuze mu kongera ingano ya hydroxypropyl methyl cellulose.
Mu buryo burambuye bwo kubaka, ingaruka zo kubika amazi mu mazi zishobora guhindurwa hagahindurwa ingano ya hydroxypropyl methyl cellulose. Ibicuruzwa bya hydroxypropyl methyl cellulose bishobora gukemura neza ikibazo cyo kubika amazi mu gihe cy'ubushyuhe bwinshi buhoraho. Mu gihe cy'ubushyuhe bwinshi buhoraho, cyane cyane mu bice bishyuha kandi bitoroshye no mu gihe cyo kubaka chromatography ku ruhande rw'izuba, HYDROXYpropyl methyl cellulose nziza irakenewe kugira ngo hakorwe uburyo amazi yo kubika amazi mu mazi.
Ubwiza bwa hydroxypropyl methyl cellulose, ifite uburinganire bwiza, itsinda ryayo rya tertiary butyl na hydroxypropyl ogisijeni rikora ku buryo bwa fibre molekile ikwirakwira mu mikoranire, ishobora guteza imbere itsinda rya methyl aldehyde na ogisijeni, kandi ubwiza bw'amazi y'imigozi ya digitale ikora covalent bonds, ishobora kuba amazi n'amazi byo gukwirakwira, hanyuma ikagenzura neza ikirere gishyushye giterwa no gushonga kw'amazi, kubika amazi menshi.
Ubwiza bwa hydroxypropyl methyl cellulose bushobora gushyira ubutaka butose kandi bucuruzwa mu bintu bivanze bya morti na plaster, kandi uduce twose tw’ingenzi dutose, dukonje, tugakonja, kandi tugakora urwego rwa filime, ubushuhe mu gihe gito bugasohoka buhoro buhoro kuva ku rufatiro, hamwe n’itangira ry’ibinyabutabire by’umwimerere bivanze n’uburyo bwo guhumeka, hanyuma hagashyirwaho uburyo bwo guhuza imbaraga zo gukanda no gukomera kw’imbaraga zo gukanda. Mu gihe cy’ubushyuhe bwinshi bw’impeshyi, kugira ngo amazi agere ku ngaruka, bigomba kuba bihuye n’uburyo bwo gukora ingano runaka n’ubwiza bw’ibicuruzwa bya hydroxypropyl methyl cellulose, bitabaye ibyo, bizagaragaza ko biruhije vuba cyane kandi bigatuma amazi adahagije, bigabanye imbaraga zo gukanda, bigatandukanya, bigatera imiterere nk’iy’ingunguru ya metope n’impaka, kandi binahujwe n’uburyo abakozi bahura n’ingorane mu bwubatsi. Uko ubushyuhe bugenda bugabanuka, ingano ya hydroxypropyl methyl cellulose ishobora kugabanuka buhoro buhoro kandi ingaruka imwe yo kubika amazi ishobora kugerwaho.
Iyo eteri ya selulosi idashyizweho, chromatography ya sima nshya izahita yumuka, gukora sima ntibishobora gutoserwa mu buryo busanzwe, bigatuma sima idakomera kandi ikagira uburyo bwo gufatana neza. Muri icyo gihe, kongeramo eteri ya selulosi bituma sima igira ubushobozi bwo kugenda neza no koroha, kandi ikongera imbaraga zo gukanda za sima.
1, ingano y'agace ka hydroxypropyl methyl cellulose
Ingano y'uduce twa eteri ya selulosi yangiza uburyo ishonga. Iyo eteri ya selulosi nziza, ni ko ibora vuba mu mazi kandi imiterere yayo yo kubika amazi irushaho kuba myinshi. Kubwibyo, ingano y'uduce twa eteri ya selulosi igomba gushyirwa mu iperereza ku imwe mu miterere yayo. Muri rusange, ingano y'uduce twa eteri ya selulosi ni mesh 80 hashingiwe kuri.
2, hydroxypropyl methyl cellulose yumye nta gipimo cy'uburemere
Igipimo cy'uburemere bw'umunyu kidakoresha imbaraga, bivuze ubushyuhe runaka bwa eteri ya selulosi yumye ya manic yumye, gutakaza ubuziranenge bw'ibinyabutabire byagize uruhare mu ijanisha ry'ubwiza bw'icyitegererezo cy'umwimerere. Ku bwiza runaka bwa eteri ya selulosi mu gihe igipimo cy'uburemere cy'umunyu kidakoresha imbaraga ni kinini cyane, bizagabanya ibice bireba muri eteri ya selulosi, byangiza ingaruka nyazo zo gukoresha amasosiyete yo munsi y'amazi, ariko kandi bikongera ikiguzi cyo kugura. Ubusanzwe eteri ya selulosi yumye idakoresha imbaraga ntigomba kurenza 5.0%.
3, ivu rya hydroxypropyl methyl cellulose potasiyumu thiocyanate
Kugira ngo ubwiza runaka bwa eteri ya selulosi mu ivu bube bwinshi cyane, bizagabanya eteri ya selulosi mu bice bireba, byangiza ingaruka nyazo zo gukoresha amasosiyete yo munsi y’amazi, eteri ya selulosi ya potasiyumu ya thiocyanate ni cyo kintu cy’ingenzi kigomba kwitabwaho ku gaciro k’imiterere yayo.
4, ubukana bwa hydroxypropyl methyl cellulose
Kubika amazi ya hydroxypropyl methyl cellulose no kuyagwiza ni ingenzi mu kongeramo eteri ya sima mu buryo bworoshye no mu buryo ikoreshwa.
5, agaciro ka hydroxypropyl methyl cellulose PH
Ubushyuhe bw'ibicuruzwa bya hydroxypropyl methyl cellulose bugabanuka buhoro buhoro iyo ubushyuhe buri hejuru cyangwa nyuma yo kubibika igihe kirekire, cyane cyane ku bicuruzwa bifite ubushyuhe bwinshi, bityo agaciro ka pH kagomba kugabanywa. Muri rusange biteganywa ko icyiciro cya PH cya ether ya cellulose kigomba gukoreshwa nka 5-9.
6. Kohereza kwa hydroxypropyl methyl cellulose
Ibyiza n'ibibi byo kohereza kwa hydroxypropyl methyl cellulose bishobora kugira ingaruka zitaziguye ku ngaruka nyazo zo gukoreshwa kwayo mu bikoresho by'ubwubatsi. Ibintu by'ingenzi byangiza kohereza kwa eteri ya cellulose ni
1) Ubwiza bw'ibikoresho fatizo; (2) ingaruka nyazo zo gusiba; (3) Gutegura ikoranabuhanga ryo gutunganya; (4) Gutegura ibintu bivangwa n'ibinyabuzima; (5) Ingaruka nyazo za zhonghe.
Dukurikije ingaruka nyazo zo gukoresha, uburyo bwo kohereza eteri ya selulose bugomba kuba munsi ya 80%.
7, ubushyuhe bwa hydroxypropyl methyl cellulose bukekwaho
Hydroxypropyl methyl cellulosemu bice bya sima nk'urufunguzo rwo kongera kole, ubushyuhe n'uburyo bwo kubika amazi, bityo ubushyuhe n'ubushyuhe bwa gel ni byo bipimo by'ingenzi bya hydroxypropyl methyl cellulose. Ubushyuhe bukoreshwa mu gupima ubwoko n'ibipimo bya eteri ya selulose, kandi urwego rwo gusimbuza eteri ya selulose rurafitanye isano.
8. Byongeye kandi, umunyu n'ibisigazwa byangiza ubushyuhe bwa kole. Iyo ubushyuhe bw'amazi buzamutse, polymer ya fibre igenda ibura amazi, kandi ubushyuhe bw'amazi bugabanuka. Iyo aho kole igeze, polymer yumye burundu maze kole ikarakorwa. Kubwibyo, ubushyuhe bw'imikorere y'ibikoresho bya sima busanzwe buri munsi y'ubushyuhe bwa kole bwa mbere. Muri ubu buryo, uko ubushyuhe bugabanuka, niko ubushyuhe burushaho kwiyongera, kandi ingaruka nyazo zo kubika amazi no kubika amazi zirushaho kuba nyinshi.
Igihe cyo kohereza ubutumwa: 25 Mata 2024