1. Ni ubuhe buryo bukoreshwa bwa hydroxypropyl methylcellulose?
HPMC ikoreshwa cyane mubikoresho byubaka, gutwikira, ibisigazwa byubukorikori, ububumbyi, ubuvuzi, ibiryo, imyenda, ubuhinzi, kwisiga, itabi nizindi nganda.HPMC irashobora kugabanywa mubyiciro byinganda, urwego rwibiryo nu rwego rwa farumasi ukurikije imikoreshereze yabyo.
2. Hariho ubwoko bwinshi bwa hydroxypropyl methylcellulose.Ni irihe tandukaniro riri hagati yabo?
HPMC irashobora kugabanwa muburyo bwihuse (ikirango kiranga “S”) nubwoko bushyushye.Ibicuruzwa byubwoko bwihuse bikwirakwira vuba mumazi akonje bikabura mumazi.Muri iki gihe, amazi ntagira ubwiza kuko HPMC ikwirakwizwa mumazi gusa kandi ntigisubizo nyacyo.Nyuma yiminota (gukurura) iminota 2, ubwiza bwamazi bwiyongera buhoro buhoro hanyuma havuka colloid ibonerana.Ibicuruzwa bishyushye bishyushye, mumazi akonje, birashobora gukwirakwira vuba mumazi ashyushye bikabura mumazi ashyushye.Iyo ubushyuhe bugabanutse ku bushyuhe runaka (ukurikije ubushyuhe bwa geli y'ibicuruzwa), ubwiza bugaragara buhoro buhoro kugeza igihe habaye koleide iboneye kandi yuzuye.
3. Ni ubuhe buryo bwa hydroxypropyl methylcellulose bwo gukemura?
1. Moderi zose zirashobora kongerwaho ibikoresho mukuvanga byumye;
2. Igomba kongerwaho muburyo busanzwe bwubushyuhe bwamazi.Nibyiza gukoresha ubwoko bukwirakwiza amazi akonje.Nyuma yo kongeramo, mubisanzwe igera kubyimbye muminota 10-90 (koga, koga, koga)
3. Kubisanzwe bisanzwe, kangura hanyuma ukwirakwize amazi ashyushye mbere, hanyuma ushyiremo amazi akonje kugirango ushonge nyuma yo gukurura no gukonja.
4. Niba agglomeration cyangwa gupfunyika bibaye mugihe cyo guseswa, ni ukubera ko gukurura bidahagije cyangwa icyitegererezo gisanzwe cyongewe kumazi akonje.Kuri iyi ngingo, kangura vuba.
5. Niba ibibyimba byabyaye mugihe cyo gusesa, birashobora gusigara mumasaha 2-12 (igihe cyihariye giterwa no guhuza igisubizo) cyangwa gukurwaho no gukuramo vacuum, igitutu, nibindi, kandi nuburyo bukwiye bwo gusebanya burashobora kandi Ongeraho.
4. Nigute dushobora gusuzuma ubwiza bwa hydroxypropyl methylcellulose byoroshye kandi byihuse?
1. Kwera.Nubwo umweru udashobora kumenya niba HPMC ari nziza cyangwa atari nziza, kandi kongeramo imiti yera mugihe cyibikorwa byumusaruro bizagira ingaruka kumiterere yabyo, ibicuruzwa byiza byinshi bifite umweru mwiza.
2. Ubwiza: HPMC ubwiza muri rusange ni mesh 80 na mesh 100, munsi ya 120, nibyiza nibyiza.
3. Itumanaho ryoroheje: HPMC ikora colloid ibonerana mumazi.Reba itumanaho.Ninini yohereza urumuri, niko bigenda neza, bivuze ko harimo ibintu bidashonga muri byo.Ihinduramiterere ihagaritse muri rusange ni nziza, kandi reaction ya horizontal izasohoka bimwe.Ariko ntibishobora kuvugwa ko umusaruro wubwiza bwikariso ihagaze neza kuruta iy'ibitereko bitambitse.Hariho ibintu byinshi byerekana ubwiza bwibicuruzwa.
4. Uburemere bwihariye: Iyo uburemere bukomeye bwihariye, niko buremereye.Ninshi uburemere bwihariye, niko hydroxypropyl iri hejuru.Mubisanzwe, hejuru ya hydroxypropyl, niko gufata amazi neza.
5. Ni bangahe hydroxypropyl methylcellulose ikoreshwa mu ifu yuzuye?
Ingano ya HPMC ikoreshwa mubikorwa nyabyo iratandukanye bitewe n’ahantu, muri rusange, ni hagati ya kg 4-5, bitewe n’ibihe by’ikirere, ubushyuhe, ubwiza bw’ivu rya calcium yaho, ifu yuzuye ifu nibisabwa kubakiriya.
6. Ubukonje bwa hydroxypropyl methylcellulose ni ubuhe?
Ifu yuzuye isanzwe igura amafaranga 100.000, mugihe minisiteri ifite ibisabwa byinshi.Bisaba amafaranga 150.000 kugirango byoroshye gukoresha.Byongeye kandi, umurimo wingenzi wa HPMC nukugumana amazi, ugakurikirwa no kubyimba.Mu ifu ya putty, mugihe cyose gufata amazi ari byiza kandi ibishishwa bikaba bike (7-8), birashoboka.Birumvikana ko uko ubwinshi bwijimye, niko gufata amazi ugereranije.Iyo ibishishwa biri hejuru ya 100.000, ibishishwa ntacyo bigira ku gufata amazi.
7. Ni ibihe bimenyetso nyamukuru bya tekinike ya hydroxypropyl methylcellulose?
Hydroxypropyl ibirimo
Ibirimo Methyl
ububobere
Ivu
guta ibiro byumye
8. Nibihe bikoresho nyamukuru bya hydroxypropyl methylcellulose?
Ibikoresho nyamukuru bya HPMC: ipamba itunganijwe, methyl chloride, okiside ya propylene, ibindi bikoresho fatizo, soda ya caustic, na aside toluene.
9. Gushyira hamwe nibikorwa byingenzi bya hydroxypropyl methylcellulose mumashanyarazi, ni imiti?
Ifu ya putty, ikina imirimo itatu yingenzi: kubyimba, gufata amazi no kubaka.Kubyimba birashobora kubyimba selile kandi bigira uruhare rwo guhagarika, kugumisha igisubizo hejuru no hepfo no kwirinda kugabanuka.Kubika amazi: Kora ifu ya putty yumye gahoro gahoro kandi ufashe calcium yumukara kugira icyo ikora munsi yamazi.Gukora: Cellulose igira amavuta yo kwisiga, bigatuma ifu ya putty igira imikorere myiza.HPMC ntabwo yitabira imiti iyo ari yo yose kandi igira uruhare runini.
10. Hydroxypropyl methylcellulose ni ether ya selile idafite selile, none ni ubuhe bwoko butari ionic?
Muri rusange, ibintu bya inert ntabwo bigira uruhare mubitekerezo byimiti.
CMC (carboxymethylcellulose) ni selile cationic selile kandi izahinduka tofu dregs iyo ihuye nivu rya calcium.
11. Ubushyuhe bwa gel bwa hydroxypropyl methylcellulose bufitanye isano niki?
Ubushyuhe bwa gel bwa HPMC bufitanye isano na vitamine.Hasi ya mikorerexyl, nubushyuhe bwa gel.
12. Haba hari isano hagati yifu ya putty na hydroxypropyl methylcellulose?
Ibi ni ngombwa!HPMC ifite amazi meza kandi izatera ifu.
13. Ni irihe tandukaniro mubikorwa byo kubyara hagati yumuti ukonje nigisubizo cyamazi ashyushye ya hydroxypropyl methylcellulose?
Ubwoko bwa HPMC bukonje bwamazi bukwirakwizwa vuba mumazi akonje nyuma yo kuvurwa hejuru na glyoxal, ariko ntabwo bishonga.Ubukonje burazamuka, ni ukuvuga ko bushonga.Ubwoko bushyushye butagaragara hejuru ya glyoxal.Glyoxal nini mubunini kandi ikwirakwira vuba, ariko ifite ubukonje buhoro nubunini buto, naho ubundi.
14. Umunuko wa hydroxypropyl methylcellulose ni uwuhe?
HPMC yakozwe nuburyo bwa solvent ikorwa hamwe na alcool ya toluene na isopropyl nkumuti.Niba idakarabye neza, hazabaho impumuro isigaye.(Kutabogama no gutunganya ibintu ni inzira y'ingenzi yo kunuka)
15. Nigute ushobora guhitamo hydroxypropyl methylcellulose ikwiye gukoreshwa bitandukanye?
Ifu yuzuye: ibisabwa byo gufata amazi menshi kandi byoroshye kubaka (ikirango gisabwa: 7010N)
Ubusanzwe bwa sima ishingiye kuri sima: kugumana amazi menshi, kurwanya ubushyuhe bwinshi, ubukonje bwihuse (icyiciro gisabwa: HPK100M)
Ubwubatsi bufatika bwubaka: ibicuruzwa ako kanya, ubwiza bwinshi.(Ikirango cyasabwe: HPK200MS)
Gypsum mortar: kubika amazi menshi, ubukonje buciriritse, ubukonje bwihuse (icyiciro gisabwa: HPK600M)
16. Irindi zina rya hydroxypropyl methylcellulose ni irihe zina?
HPMC cyangwa MHPC izwi kandi nka hydroxypropyl methylcellulose na hydroxypropyl methylcellulose ether.
17. Gukoresha hydroxypropyl methylcellulose muri poro ya putty.Niki gitera ifu yuzuye ifuro?
HPMC ifite uruhare runini mu ifu yuzuye: kubyimba, gufata amazi no kubaka.Impamvu zibibyimba ni:
1. Ongeramo amazi menshi.
2. Niba epfo idakamye, gusiba urundi rwego hejuru bizatera ibisebe byoroshye.
18. Ni irihe tandukaniro riri hagati ya hydroxypropyl methylcellulose na MC:
MC, methyl selulose, ikozwe mu ipamba itunganijwe nyuma yo kuvura alkali, ikoresheje metani chloride nka mitiweri ya etherifying, hamwe nuruhererekane rwibisubizo kugirango itange selile.Urwego rusange rwo gusimbuza ni 1.6-2.0, kandi gukemuka kwinzego zitandukanye zo gusimburana nabyo biratandukanye.Nibintu bitari ionic selulose ether.
.Muri rusange, umubare wongeyeho ni munini, ubwiza ni buto, ubwiza buri hejuru, kandi igipimo cyo gufata amazi ni kinini.Umubare wongeyeho ufite uruhare runini ku kigero cyo gufata amazi, kandi ubukonje ntaho buhuriye n’igipimo cyo gufata amazi.Igipimo cyo guseswa ahanini giterwa nuburinganire bwo hejuru hamwe nuburinganire bwa selile ya selile.Muri ethers ya selile yavuzwe haruguru, methylcellulose na hydroxypropylmethylcellulose bifite igipimo kinini cyo gufata amazi.
(2) Methyl selulose irashobora gushonga mumazi akonje, ariko izahura ningorane zo gushonga mumazi ashyushye.Igisubizo cyamazi cyacyo kirahagaze neza murwego rwa pH = 3-12, kandi gifite guhuza neza na krahisi hamwe na surfactants nyinshi.Iyo ubushyuhe bugeze kuri gel Iyo ubushyuhe bwa gelation bwiyongereye, gelation izabaho.
(3) Imihindagurikire yubushyuhe izagira ingaruka zikomeye ku kigero cyo gufata amazi ya methylcellulose.Mubisanzwe, uko ubushyuhe buri hejuru, niko igipimo cyo gufata amazi ari kibi.Niba ubushyuhe bwa minisiteri burenze dogere 40, kugumana amazi ya methylcellulose bizagenda byangirika cyane, bigira ingaruka zikomeye ku iyubakwa rya minisiteri.
(4) Methylcellulose igira uruhare runini mukubaka no gufatira minisiteri.Kwizirika hano bivuga kwizirika hagati yigikoresho cyo gusaba umukozi nibikoresho fatizo byurukuta, ni ukuvuga kurwanya inkweto za minisiteri.Kwizirika hejuru ni byinshi, kurwanya shear ya minisiteri ni byinshi, kandi imbaraga zisabwa n'abakozi mugihe cyo gukoresha nazo ni nyinshi, bityo imikorere yubwubatsi bwa minisiteri ikennye.
Igihe cyo kohereza: Mutarama-31-2024