1. Ni iyihe shingiro ry'ikoreshwa ryahydroxypropyl methylcellulose (HPMC)?
Hydroxypropyl methylcellulose ikoreshwa cyane mu bikoresho by'ubwubatsi, irangi, resins zikoze mu nganda, ibyuma bivanze, ubuvuzi, ibiribwa, imyenda, ubuhinzi, amavuta yo kwisiga, itabi n'izindi nganda. Hydroxypropyl methylcellulose ishobora kugabanywamo urwego rw'ubwubatsi, urwego rw'ibiribwa n'urwego rw'imiti hakurikijwe ikoreshwa ryayo. 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 gukora sima na kole.
2. Hari ubwoko butandukanye bwa hydroxypropyl methylcellulose (HPMC), kandi ni irihe tandukaniro riri hagati y’ikoreshwa ryabyo?
HPMC ishobora kugabanywamo ubwoko bw'ingufu zihita zicika n'ubwoko bw'ingufu zihita zicika. Ibikoresho by'ingufu zihita zicika vuba iyo zihuye n'amazi akonje zikabura mu mazi. Muri iki gihe, amazi nta mvubura aba afite kuko HPMC ikwirakwira gusa mu mazi nta gushonga nyako. Nyuma y'iminota 2, mvubura y'amazi yiyongera buhoro buhoro, igakora colloid ibonerana. Ibikoresho bishyushye, iyo bihuye n'amazi akonje, bishobora gucika vuba mu mazi ashyushye bikabura mu mazi ashyushye. Iyo ubushyuhe bugabanutse ku bushyuhe runaka, mvubura izagenda igaragara buhoro buhoro kugeza igihe ikoze colloid ibonerana. Ubwoko bw'ingufu zishyushye bushobora gukoreshwa gusa mu ifu ya putty na mortier. Muri kole y'amazi n'irangi, hazabaho ibintu byo gushyira hamwe kandi ntibishobora gukoreshwa. Ubwoko bw'ingufu zihita bukoreshwa mu buryo bwinshi. Bushobora gukoreshwa mu ifu ya putty na mortier, ndetse na kole y'amazi n'irangi, nta binyuranyo na kimwe.
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 mu mazi ashyushye mu buryo bumwe mu ntangiriro, hanyuma igashonga vuba iyo ikonje. Uburyo bubiri busanzwe busobanurwa butya:
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) Shyiramo 1/3 cyangwa 2/3 by'amazi akenewe mu gikoresho, hanyuma ushyushye kugeza kuri 70 ° C, ukurikije uburyo bwa 1), shyiramo HPMC kugira ngo 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 powder.]
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) Ubutoshye: Ubutoshye bwa HPMC muri rusange bufite mesh 80 na mesh 100, mesh 120 ni nkeya, kandi HPMC nyinshi ikorerwa muri Hebei ni mesh 80. Uko ubutoshye burushaho kuba bwiza, muri rusange, niko biba byiza.
(3) Kohereza: Shyira hydroxypropyl methylcellulose (HPMC) mu mazi kugira ngo habeho colloid ibonerana, kandi urebe uko yohereza. Uko yohereza ari nyinshi, ni ko biba byiza, bigaragaza ko nta kintu kinini kidashongamo. Uburyo bwo kwinjira kwa reactors zihagaze muri rusange ni bwiza, naho ubw'areactors zihagaze ni bubi cyane, ariko ntibivuze ko ubwiza bwa reactors zihagaze ari bwiza kurusha ubw'areactors zihagaze, 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. Ingano ya hydroxypropyl methylcellulose (HPMC) iri mu ifu ya putty ni iyihe?
Ingano ya HPMC ikoreshwa mu bikorwa iratandukanye bitewe n'ikirere, ubushyuhe, ubwiza bwa kalisiyumu y'ivu yo mu gace runaka, formula y'ifu ya putty n' "ubwiza busabwa n'abakiriya". Muri rusange, hagati ya kg 4 na kg 5. Urugero: ifu nyinshi ya putty i Beijing ni kg 5; ifu nyinshi ya putty i Guizhou ni kg 5 mu mpeshyi na kg 4.5 mu gihe cy'itumba; ifu ya putty i Yunnan ni nto, muri rusange ni kg 3 kugeza kuri kg 4, nibindi.
6. Ni ubuhe buryo bukwiye bwo gupima hydroxypropyl methylcellulose (HPMC)?
Ifu ya putty muri rusange irahagije kuri yuan 100.000, kandi ibisabwa kuri sitrove biri hejuru, 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, abakoresha benshi bahangayikishijwe n'ibi bimenyetso bibiri. Abafite ubukana bwinshi bwa hydroxypropyl muri rusange bafite ubukana bwiza bwo kubika amazi. Ifite ubukana bwinshi bwo kubika amazi niyo ifata amazi neza, mu rugero runaka (atari rwose), naho ifite ubukana bwinshi yo ikoreshwa neza mu gusya sima.
8. Ni ibihe bikoresho by'ingenzi by'ibanze byahydroxypropyl 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 gukoresha HPMC mu ifu ya putty, kandi se bibaho mu buryo bwa shimi?
Mu ifu ya putty, HPMC igira inshingano eshatu zo gukurura, kubika amazi no kubaka. Gukomera: Selilulose ishobora gukurura kugira ngo ikomeze guhagarara neza no gukomeza gukurura, kandi irinde kugwa. Gukomera kw'amazi: gutuma ifu ya putty yumuka buhoro buhoro, kandi igafasha kalisiyumu y'ivu gukora neza iyo amazi akoze. Imiterere: Selilulose ifite ingaruka zo gusiga amavuta, bishobora gutuma ifu ya putty igira imiterere myiza. HPMC ntabwo igira uruhare mu bikorwa bya shimi, ahubwo igira uruhare rw'inyongera gusa. Kongera amazi ku ifu ya putty no kuyashyira ku rukuta ni imikorere ya shimi, kuko ibintu bishya bibaho. Iyo ukuye ifu ya putty ku rukuta, ukayisya ikameramo 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 ioni ni ibintu bidahinduka iyoni mu mazi. Iyonize yerekeza ku buryo electrolyte ivangwamo iyoni zishyushye zishobora kugenda mu buryo bwizewe mu kintu runaka (nk'amazi, alcohol). Urugero, sodium chloride (NaCl), umunyu turya buri munsi, irashonga mu mazi igatanga iyoni zishyushye kugira ngo ikore iyoni za sodium zigenda zimuka (Na+) zifite amashanyarazi meza hamwe na iyoni za chloride (Cl) zifite amashanyarazi mabi. Ni ukuvuga, iyoHPMCishyizwe mu mazi, ntabwo izahinduka iyoni zifite umuriro, ahubwo ibaho mu buryo bwa molekile.
Igihe cyo kohereza: 28 Mata 2024