1. Ni iyihe shingiro ry'ikoreshwa ryahydroxypropyl methylcellulose (HPMC)?
HPMC ikoreshwa cyane mu bikoresho by'ubwubatsi, irangi, resins zikoze mu nganda, ibumba, ubuvuzi, ibiribwa, imyenda, ubuhinzi, amavuta yo kwisiga, itabi n'izindi nganda. HPMC ishobora kugabanywamo urwego rw'ubwubatsi, urwego rw'ibiribwa n'urwego rw'imiti hakurikijwe icyo igamije. Kuri ubu, ibicuruzwa byinshi byo mu rugo ni urwego rw'ubwubatsi. Mu rwego rw'ubwubatsi, ifu ya putty ikoreshwa cyane, hafi 90% ikoreshwa mu ifu ya putty, naho ibisigaye bigakoreshwa mu ibumba rya sima.
2. Impumuro ya hydroxypropyl methylcellulose (HPMC) ni iyihe?
HPMC ikorwa n'uburyo bwo gushonga ikoresha toluene na isopropanol nk'imiti isukura. Iyo gukaraba bitameze neza cyane, hazabaho impumuro isigaye.
3. Ni ubuhe buryo bwo gushonga bwa hydroxypropyl methylcellulose (HPMC)?
Uburyo bwo gushonga mu mazi ashyushye: Kubera ko HPMC idashonga mu mazi ashyushye, HPMC ishobora gushonga neza mu mazi ashyushye mu ntangiriro, hanyuma igashonga vuba iyo ikonje. Uburyo bubiri busanzwe busobanurwa gutya:
1) Shyira amazi ashyushye akenewe mu gikoresho hanyuma uyashyushye kugeza kuri dogere selisiyusi 70. Hydroxypropyl methylcellulose yongewemo buhoro buhoro mu kuvanga buhoro buhoro, mu ntangiriro HPMC yarerembaga hejuru y'amazi, hanyuma buhoro buhoro ikora ururenda, rukonjeshwa mu kuvanga.
2), ongeramo 1/3 cyangwa 2/3 by'amazi akenewe mu gikoresho, hanyuma ushyushye kugeza kuri 70°C, unyanyagize HPMC ukurikije uburyo bwa 1), hanyuma utegure amazi ashyushye; hanyuma ongeramo andi mazi akonje ku mazi ashyushye, uruvange rugakonjeshwa nyuma yo kuvanga.
Uburyo bwo kuvanga ifu: Vanga ifu ya HPMC n'ibindi bintu byinshi birimo ifu, uvange neza ukoresheje icyuma gishongesha, hanyuma wongeremo amazi kugira ngo ishonge, hanyuma HPMC ishobora gushonga muri iki gihe nta guhurirana, kuko hari HPMC nkeya muri buri mfuruka ntoya Ifu izashonga ako kanya iyo ihuye n'amazi. ——Abakora ifu ya putty na mortar bakoresha ubu buryo. [Hydroxypropyl methylcellulose (HPMC) ikoreshwa nk'ikintu gikomeza ubukonje no kubika amazi muri mortar ya putty.]
4. Ni gute wasuzuma ubwiza bwa hydroxypropyl methylcellulose (HPMC) mu buryo bworoshye kandi bwumvikana?
(1) Ubuziranenge: Nubwo ubuziranenge budashobora kugaragaza niba HPMC yoroshye gukoresha, kandi niba hongewemo ibikoresho byo kuyungurura mu gihe cyo kuyitunganya, bizagira ingaruka ku bwiza bwayo. Ariko, ibicuruzwa byinshi byiza bifite ubuziranenge bwiza.
(2) Ubutonyanga: Ubutonyanga bwa HPMC muri rusange bufite mesh 80 na mesh 100, naho mesh 120 ni nkeya. HPMC nyinshi ikorerwa muri Hebei ni mesh 80. Uko ubutonyanga burushaho kuba bwiza, muri rusange, niko biba byiza.
(3) Ihererekanya ry'urumuri: shyirahydroxypropyl methylcellulose (HPMC)Mu mazi kugira ngo habeho koloyide ibonerana, kandi urebe uburyo urumuri rwayo runyura. Uko urumuri runyura cyane, ni ko birushaho kuba byiza, bigaragaza ko hari ibintu bike bidashonga muri yo. . Uburyo amashanyarazi anyuramo muri rektori zihagaze muri rusange ni bwiza, naho amashanyarazi ahagaze akaba mabi, ariko ntibivuze ko ubwiza bwa rektori zihagaze ari bwiza kurusha ubw'amashanyarazi ahagaze, kandi ubwiza bw'umusaruro bugenwa n'ibintu byinshi.
(4) Uburemere bwihariye: Uko uburemere bwihariye bungana, niko uburemere bungana. Uburemere ni bwinshi, muri rusange kubera ko ingano y'itsinda rya hydroxypropyl iri muri ryo ari nyinshi, kandi ingano y'itsinda rya hydroxypropyl ikaba nyinshi, bituma amazi aguma neza.
5. Ni irihe tandukaniro riri hagati y’ubwoko bwa hydroxypropyl methylcellulose bushobora gushonga mu buryo bushyushye n’ubwoko bwa hydroxypropyl methylcellulose bushobora gushonga mu gihe cyo kuyikora?
Ubwoko bwa HPMC bukwirakwira vuba buterwa na glyoxal, kandi bukwirakwira vuba mu mazi akonje, ariko ntabwo bushonga mu by'ukuri. Bushonga gusa iyo ubushyuhe bwiyongereye. Ubwoko bwa ako kanya ntabwo bukoresha glyoxal mu gutunganya ubuso. Iyo ingano ya glyoxal ari nini, ubushyuhe buzaba bwihuta, ariko ubushyuhe buziyongera buhoro buhoro, kandi niba ingano ari nto, ibinyuranye n'ibyo bizaba.
6. Ni ubuhe buryo bukwiye bwo gupima hydroxypropyl methylcellulose (HPMC)?
Ifu ya putty muri rusange ni yuan 100.000, kandi ibisabwa kuri sitrove ni byinshi, kandi yuan 150.000 birakenewe kugira ngo byorohe kuyikoresha. Byongeye kandi, akazi k'ingenzi ka HPMC ni ukubika amazi, hagakurikiraho gucumba. Mu ifu ya putty, igihe cyose amazi abika neza kandi ubukana buri hasi (70.000-80.000), birashoboka. Birumvikana ko uko ubukana bwiyongera, ni ko amazi abika neza. Iyo ubukana burenze 100.000, ubukana buzagira ingaruka ku bukana bw'amazi. Ntabwo bikiri byinshi.
7. Ni ibihe bimenyetso by'ingenzi by'ikoranabuhanga bya hydroxypropyl methylcellulose (HPMC)?
Ingano ya hydroxypropyl n'ubukana, abantu benshi bahangayikishijwe n'ibi bimenyetso bibiri. Abantu bafite ubukana bwinshi bwa hydroxypropyl muri rusange bafite ubukana bwiza bwo kubika amazi. Ifite ubukana bwinshi ifata amazi neza, mu rugero runaka (atari rwose), naho ifite ubukana bwinshi ikoreshwa neza mu gusya sima.
8. Ni ibihe bikoresho by'ingenzi bya hydroxypropyl methylcellulose (HPMC)?
Ibikoresho by'ingenzi bya hydroxypropyl methylcellulose (HPMC): ipamba itunganyijwe, methyl chloride, propylene oxide, n'ibindi bikoresho fatizo, soda ya caustic, aside, toluene, isopropanol, nibindi.
9. Ni iyihe nshingano nyamukuru yo gushyira mu bikorwaHPMCmu ifu ya putty, kandi se bibaho mu buryo bwa shimi?
Mu ifu ya putty, HPMC igira uruhare rutatu mu gutuma amazi akomera, kuyabika no kuyashyiraho.
Ububyimbirwe: Selilulose ishobora gukongerwa kugira ngo ikomeze guhagarara neza kandi ikomeze kuba imwe hejuru no hasi, kandi irinde kugwa.
Kubika amazi: tuma ifu ya putty yumuka buhoro buhoro, kandi ufashe kalisiyumu y'ivu gukora iyo amazi arimo gukora.
Imiterere: Selulosi ifite ubushobozi bwo gusiga amavuta, ibyo bikaba bishobora gutuma ifu ya putty ikora neza.
Gushyira amazi ku ifu ya putty no kuyishyira ku rukuta ni uburyo bwo gukora imiti, kuko ibintu bishya bibaho. Iyo ukuye ifu ya putty ku rukuta, ukayisya ikamera nk'ifu, hanyuma ukongera kuyikoresha, ntabwo izakora kuko ibintu bishya (calcium carbonate) nabyo byakozwe.
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.
10. HPMC ni eteri ya cellulose itari ionic, none se itari ionic ni iki?
Mu magambo y’abantu basanzwe, ibintu bitari iyoni ni ibintu bidahinduka iyoni mu mazi. Iyonize yerekeza ku buryo electrolyte ivangwamo iyoni zifite umuriro ushobora kugenda mu kintu runaka (nk'amazi, alcohol). Urugero, sodium chloride (NaCl), umunyu turya buri munsi, irashonga mu mazi igahinduka iyoni kugira ngo ikore iyoni za sodium zigenda zimuka (Na+) zifite umuriro mwiza na iyoni za chloride (Cl) zifite umuriro mubi. Ni ukuvuga ko iyo HPMC ishyizwe mu mazi, ntabwo ihinduka iyoni zifite umuriro, ahubwo ibaho mu buryo bwa molekile.
11. Ni iyihe sano iri hagati y’ubushyuhe bwa gel bwa hydroxypropyl methylcellulose?
Ubushyuhe bwa gel ya HPMC bufitanye isano n'ingano yayo ya methoxy, uko ingano ya methoxy iba nke, niko ubushyuhe bwa gel buba bwinshi.
12. Ese hari isano iri hagati y'igitonyanga cy'ifu ya putty na HPMC?
Kubura 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 kubura ifu. Niba bifitanye isano na HPMC, niba HPMC ifite amazi make, nayo izatera kubura ifu.
13. Ni irihe tandukaniro riri hagati y’ubwoko bwa hydroxypropyl methylcellulose bushobora gushonga mu buryo bushyushye n’ubwoko bwa hydroxypropyl methylcellulose bushobora gushonga mu gihe cyo kuyikora?
Ubwoko bw'ikwirakwira ryihuse ryaHPMCiterwa umuti wa glyoxal ku buso, kandi ikwirakwira vuba mu mazi akonje, ariko ntabwo ishonga mu by'ukuri. Ishonga gusa iyo ubushyuhe bwiyongereye. Ubwoko bw'ingufu buhita butagira umuti wa glyoxal ku buso. Iyo ingano ya glyoxal ari nini, ubushyuhe buziyongera vuba, ariko ubushyuhe buziyongera buhoro buhoro, kandi niba ingano ari nto, ibinyuranye n'ibyo bizaba.
Igihe cyo kohereza: 25 Mata 2024