Igisubizo cya HPMC

1, ni iyihe mikoreshereze nyamukuru ya hydroxypropyl methyl cellulose (HPMC)?

Igisubizo:HPMCikoreshwa cyane mu bikoresho by'ubwubatsi, gusiga irangi, resins zikoze mu byuma, ibumba, ubuvuzi, ibiribwa, imyenda, ubuhinzi, amavuta yo kwisiga, itabi n'izindi nganda. HPMC ishobora kugabanywamo ibi bikurikira: urwego rw'ubwubatsi, urwego rw'ibiribwa n'urwego rw'ubuvuzi hakurikijwe ikoreshwa. Muri iki gihe ibyakorewe mu rugo ahanini ni urwego rw'ubwubatsi, mu rwego rw'ubwubatsi, ingano y'ifu ya putty ni nini cyane, hafi 90% ikoreshwa mu gukora putty ifu, ibisigaye bikoreshwa mu gukora sima na kole.

2, hydroxypropyl methyl cellulose (HPMC) igabanyijemo amoko menshi, ni irihe tandukaniro riri hagati yo kuyikoresha?

Igisubizo: HPMC ishobora kugabanywamo ibice bibiri: ibicuruzwa bishongesha vuba n'ibishyushye, ibicuruzwa bishongesha vuba, mu mazi akonje bigatagurika vuba, bigashira mu mazi, muri iki gihe amazi nta ruhushya agira, kuko HPMC iba itataguritse mu mazi gusa, nta gushonga nyako. Hafi iminota 2, uruhushya rw'amazi ruriyongera buhoro buhoro, rugakora colloid ibonerana. Ibicuruzwa bishongesha ubushyuhe, mu gukusanya amazi akonje, bishobora kuba mu mazi ashyushye, bigashira vuba, bigashira mu mazi ashyushye, kugeza ubushyuhe bugabanutse ku bushyuhe runaka, uruhushya rugaragara buhoro buhoro, kugeza igihe colloid igaragara ibonerana. Ubwoko bushongesha ubushyuhe bushobora gukoreshwa gusa mu ifu ya putty na mortier, mu gukusanya amazi no gusiga, bishobora kugaragara nk'ibintu bihurirana, ntibishobora gukoreshwa. Icyitegererezo cyo gushonga ako kanya, urwego rwo gukoresha ni runini, mu kuba umuntu yarambiwe ifu y'umwana na mortier, kandi mu gukusanya amazi no gusiga, byose bishobora gukoreshwa, nta kirazira.

3, uburyo bwo gusenya hydroxypropyl methyl cellulose (HPMC) bufite ubwo buryo?

– igisubizo: uburyo bwo gushonga amazi ashyushye: kubera ko HPMC idashonga mu mazi ashyushye, bityo HPMC yo mu ntangiriro ishobora gushonga neza mu mazi ashyushye, hanyuma igashonga vuba iyo ikonje, uburyo bubiri busanzwe busobanurwa butya:

1) Uzuza amazi ashyushye ahagije mu gikoresho hanyuma ushyushye kugeza kuri dogere 70. Hydroxypropyl methyl cellulose yongerwamo buhoro buhoro mugihe cyo kuvanga buhoro, maze HPMC ikareremba hejuru y'amazi, hanyuma buhoro buhoro igakora ururenda, rukonjeshwa mugihe cyo kuvanga.

2) Shyiramo 1/3 cyangwa 2/3 by'amazi akenewe mu gikoresho hanyuma ushyushye kugeza kuri 70°C. Shyira HPMC ukurikije uburyo bwa 1) kugira ngo utegure amazi ashyushye; Hanyuma ongeramo amazi akonje asigaye mu mazi ashyushye hanyuma ukonjeshe uruvange nyuma yo kuvanga.

Uburyo bwo kuvanga ifu: Ifu ya HPMC n'ibindi bintu byinshi bigize ifu, bivanze neza na blender, hanyuma ukongeramo amazi kugira ngo bishonge, muri iki gihe HPMC ishobora gushonga, kandi ntiyongere guterana, kuko buri mfuruka nto, ifu nto ya HPMC gusa, amazi azahita ashonga. – Abakora ifu ya putty na mortar bakoresha ubu buryo. [Hydroxypropyl methyl cellulose (HPMC) ikoreshwa nk'ikintu gikomeza ubukana n'ikintu gikomeza amazi muri mortar ya putty.

4, ni gute wamenya ubwiza bwa hydroxypropyl methyl cellulose (HPMC) bworoshye kandi bwumvikana?

Igisubizo: (1) umweru: nubwo umweru udashobora kumenya niba HPMC ari nziza, kandi iyo wongewemo mu buryo bwo kuyitunganya, bigira ingaruka ku bwiza bwayo. Ariko, ibicuruzwa byinshi byiza bifite umweru mwiza. (2) ubwiza: HPMC ubunini muri rusange ni mesh 80 na mesh 100, 120 intego nke, Hebei HPMC ahanini ni mesh 80, uko ubwiza burushaho kuba bwiza, muri rusange, ni ko byiza. (3) kohereza: hydroxypropyl methyl cellulose (HPMC) mu mazi, ikorwa rya colloid ibonerana, reba uko ikwirakwira kwayo, uko kohereza ari ko kuba kwinshi ni ko kuba kwinshi, ibintu bidashonga imbere bikaba bike. Kohereza kwa reactor ihagaze muri rusange ni byiza, naho kwa reactor ihagaze ni bibi, ariko ntibivuze ko ubwiza bw'umusaruro wa reactor ihagaze ari bwiza kuruta uwa reactor ihagaze. Hari ibintu byinshi bigena ubwiza bw'umusaruro. (4) Igipimo: uko igipimo kinini, niko uburemere burushaho kuba bwiza. Kurusha ingenzi, kubera ko imbere muri hydroxyl propyl base ingano ari nyinshi, ingano ya hydroxyl propyl base ingano ni nyinshi, bikingira amazi kugira ngo arusheho kuba meza.

5, ubukana bwa hydroxypropyl methyl cellulose (HPMC) bukwiriye kurushaho?

– igisubizo: kurambirwa ifu y'umwana ni nziza, akenshi ni ibihumbi 100, imwe ikaba ndende ugereranyije n'ibikenewe muri mortilage, ikeneye ubushobozi bwo kuyikoresha ibihumbi 150. Byongeye kandi, HPMC ni yo nshingano ikomeye yo kubika amazi, hagakurikiraho gukuba. Mu ifu ya putty, igihe cyose amazi abika neza, viscosity iba iri hasi (ibihumbi 7-80), birashoboka kandi, birumvikana ko viscosity iba nini, viscosity ifata amazi iba nziza kurushaho, iyo viscosity irenga ibihumbi 100, viscosity ifata amazi iba itari nini cyane.

6, hydroxypropyl methyl cellulose (HPMC) ni ibihe bimenyetso by'ingenzi bya tekiniki?

Igisubizo: Ingano ya Hydroxypropyl n'ubukana, abakoresha benshi bita kuri ibi bipimo bibiri. Ingano ya Hydroxypropyl ni nyinshi, ubusanzwe amazi agumana neza. Ubukana, amazi agumana neza, ugereranije (ariko atari burundu) nabyo ni byiza, kandi ubukana, sima ya sima ni byiza gukoresha bimwe.

7, hydroxypropyl methyl cellulose (HPMC) ni ibihe bikoresho by'ingenzi fatizo?

Igisubizo: hydroxypropyl methyl cellulose (HPMC) ibikoresho by'ingenzi: ipamba itunganyijwe, chloromethane, propylene oxide, ibindi bikoresho by'ibanze, alkali y'ibinini, aside, toluene, alkoholi ya isopropyl n'ibindi.

8, HPMC mu ikoreshwa ry'ifu ya putty, uruhare rw'ingenzi, ese kuba hari shimi?

Igisubizo: HPMC mu ifu ya putty, gukurura, amazi no kubaka imiterere y'imirimo itatu. Gukomera: selulose ishobora gukurura kugeza ihagaze, ku buryo umuti ukomeza kuba umwe hejuru no hasi nk'uruhare rwo kurwanya gutemba kw'amazi. Kubika amazi: gutuma ifu ya putty yumuka buhoro buhoro, kalisiyumu y'umukara yiyongera mu bikorwa by'imyitozo y'amazi. Imiterere: amavuta ya selulose, ishobora gutuma ifu ya putty ikora neza. HPMC ntabwo igira uruhare mu bikorwa by'imiti, ahubwo igira uruhare runini gusa. Ifu ya putty n'amazi, ku rukuta, ni imyitozo ya shimi, bitewe n'ivuka ry'ibintu bishya, urukuta rw'ifu ya putty rumanuka ruvuye ku rukuta, rugasenyuka ruhinduka ifu, hanyuma rugakoreshwa, atari byiza, kuko rwakoze ikintu gishya (calcium carbonate). Ibigize ifu ya kalisiyumu y'ikijuju 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'ikijuju mu mazi no mu mwuka ikoreshejwe na CO2, kalisiyumu karubone, n'amazi ya HPMC gusa, bifasha kalisiyumu y'ikijuju gukora neza, ubwayo ntiyigeze igira uruhare mu gukora ikintu icyo ari cyo cyose.

9. Eteri ya selulose itari ionic ya HPMC, none se itari ionic ni iki?

A: Muri rusange, ibintu bitari iyoni ni ibintu bidahinduka iyoni mu mazi. Iyoni ni ukwivanga kwa electrolyte mu bintu byigenga mu buryo runaka, nk'amazi cyangwa alcool. Urugero, umunyu turya buri munsi - sodium chloride (NaCl) irashonga mu mazi igahinduka iyoni zigenga zo mu buryo bwigenga (Na+) zifite charge nziza na chloride (Cl) zifite charge mbi. Ni ukuvuga ko HPMC mu mazi idahinduka iyoni zifite charge, ahubwo ibaho nk'uduce duto.

10. Ni iki gifitanye isano n'ubushyuhe bwa gel bwa hydroxypropyl methyl cellulose?

– Igisubizo: Ubushyuhe bwa gelHPMCbifitanye isano n'ingano ya methoxyl, uko ingano ya methoxyl iba nke ↓, niko ubushyuhe bwa gel burushaho kwiyongera.

11, ifu ya putty na HPMC nta sano bifitanye?

Igisubizo: ifu y'ifu ya putty ahanini kandi ubuziranenge bwa kalisiyumu y'ivu bufite isano rikomeye cyane, kandi HPMC ntabwo ifite isano rikomeye cyane. Ingano nke ya kalisiyumu y'imvi n'ikigereranyo kidakwiye cya CaO na Ca(OH)2 muri kalisiyumu y'imvi bizatuma ifu igabanuka. Niba hari isano nto na HPMC, amazi ya HPMC aba make, nabyo bitera ifu.

12, hydroxypropyl methyl cellulose, amazi akonje ashongeshwa kandi ashyushye ashongeshwa mu ikorwa, ni irihe tandukaniro riri hagati yaryo?

– Igisubizo: Ubwoko bw'umuti w'amazi akonje wa HPMC ni nyuma yo gusukurwa ku buso bwa glyoxal, ushyirwa mu mazi akonje uhita ushonga, ariko ntushonge neza, ubushyuhe buriyongera, urashonga. Ubwoko bw'umuti ushongeshwa n'ubushyuhe ntibwasuwe na glyoxal ku buso. Ingano ya glyoxal ni nini, ikwirakwira vuba, ariko ubushyuhe buragabanuka, ingano ni nto, ahubwo ni nke.

13, impumuro ya hydroxypropyl methyl cellulose (HPMC) ni iyihe?

– Igisubizo: HPMC ikorwa hakoreshejwe uburyo bwa solvent ikozwe muri toluene na isopropyl alcohol. Iyo gukaraba bitameze neza cyane, hazabaho uburyohe busigaye.

14, uburyo butandukanye bwo gukoresha, ni gute wahitamo hydroxypropyl methyl cellulose (HPMC) ikwiye?

– igisubizo: rambirwa no gushyira ifu y'umwana: ibisabwa ni bike, ubushyuhe ibihumbi 100, sawa, ni ngombwa kurinda amazi kugira ngo ube hafi. Gushyiramo imyuka: ibisabwa byinshi, ubushyuhe bwinshi, ibihumbi 150 kugira ngo bibe byiza kurushaho. Gushyiramo kole: gukenera ibikoresho byihuse, ubushyuhe bwinshi.

15. Ni irihe zina rya hydroxypropyl methyl cellulose?

– IGISUBIZO: Hydroxypropyl Methyl Cellulose, Ifunze nka HPMC cyangwa MHPC, cyangwa Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Hypromellose, Cellulose, 2-hydroxypropyl methyl Cellulose ether.

16. HPMC mu ikoreshwa ry'ifu ya putty, putty powder bubble ni iyihe mpamvu?

Igisubizo: HPMC mu ifu ya putty, ubunini, amazi n'imiterere yayo ifite inshingano eshatu. Kutagira uruhare mu gikorwa icyo ari cyo cyose. Impamvu zitera uduheri: 1, amazi menshi. 2, hasi ntabwo humye, hejuru y'aho hakubirwa, kandi biroroshye gupfuka.

17. Ni irihe tandukaniro riri hagati ya HPMC na MC?

– Igisubizo: MC ni selulosi ya methyl, ikorwa muri eteri ya selulosi binyuze mu buryo butandukanye bwo gukora hamwe na kloride ya methane nk'ikintu gitanga ubushyuhe nyuma y'uko ipamba itunganyijwe ivuwe na alkali. Muri rusange, urwego rwo gusimbuza ni 1.6 ~ 2.0, kandi gushonga kuratandukanye bitewe n'urwego rwo gusimbuza. Iba muri eteri ya selulosi itari ioni.

(1) Uburyo metil cellulose igumana amazi biterwa n'ingano yayo, ubukana, ubukana bw'uduce duto n'umuvuduko wo gushonga. Muri rusange, ingano nini, ubukana buto, ubukana, umuvuduko wo gufata amazi ni munini. Muri byo, ingano y'inyongera igira ingaruka zikomeye ku buryo amazi agumana, kandi ubukana ntibungana n'uburyo amazi agumana. Umuvuduko wo gushonga uterwa ahanini n'urugero rw'impinduka z'ubuso n'ubukana bw'uduce duto twa selulose. Muri ether nyinshi za selulose zavuzwe haruguru, methyl cellulose na hydroxypropyl methyl cellulose umuvuduko wo gufata amazi ni munini.

(2) Methyl cellulose irashongeshwa mu mazi akonje, bigoye kuyishongesha mu mazi ashyushye. Umuti wayo w'amazi uhamye cyane muri pH=3~12. Ikorana neza na sitashi, gum ya guanidine n'ibindi bintu byinshi biyitera gukamura. Gukamura bibaho iyo ubushyuhe bugeze ku bushyuhe bwa gelation.

(3) Impinduka mu bushyuhe zigira ingaruka zikomeye ku muvuduko wo kubika amazi muri selulosi ya methyl. Muri rusange, uko ubushyuhe burushaho kuba bwinshi, ni ko kubika amazi birushaho kuba bibi. Iyo ubushyuhe bwa selulosi burenze 40°C, kubika amazi muri selulosi ya methyl bizaba bibi cyane, ibyo bikaba bigira ingaruka zikomeye ku buryo selulosi ikora.

(4) Methyl cellulose ifite ingaruka zigaragara ku buryo mortilla ikorwa n'uburyo ifatana. "Gufatana" hano bivuga uburyo umukozi yumva hagati y'igikoresho n'urukuta, ni ukuvuga uburyo mortilla ifatana. Gufatana ni kinini, uburyo mortilla ifatana ni kinini, imbaraga zisabwa n'abakozi mu ikoreshwa nazo ni nini, kandi uburyo mortilla ikorwa ni buke. Mu bicuruzwa bya cellulose ether, methyl cellulose ifatana iri ku rwego ruringaniye.

HPMC yo muri hydroxypropyl methyl cellulose, itunganywa n'ipamba nyuma yo gusukurwa na alkali, ikoresheje propylene oxide na chloromethane nk'ikintu gitanga ether, binyuze mu buryo butandukanye kandi ikorwa muri non-ionic cellulose vange ether. Igipimo cyo gusimbuza muri rusange ni 1.2 ~ 2.0. Imiterere yayo iratandukanye bitewe n'ingano ya methoxy na hydroxypropyl.

(1) Hydroxypropyl methyl cellulose ishongeshwa byoroshye mu mazi akonje, bigoye kuyishongesha mu mazi ashyushye. Ariko, ubushyuhe bwayo bwo gukaraba mu mazi ashyushye bugaragara ko buri hejuru y’ubwa methyl cellulose. Uburyo methyl cellulose ishongeshwamo mu mazi akonje nabwo bwarushijeho kwiyongera cyane.

(2) Uburemere bwa hydroxypropyl methyl cellulose bufitanye isano n'uburemere bwayo bwa molekile, kandi uko uburemere bwa molekile burushaho kuba bwinshi, niko uburemere burushaho kuba bwinshi. Ubushyuhe nabwo bugira ingaruka ku buremere. Uburemere buragabanuka uko ubushyuhe bwiyongera. Ariko uburemere bwayo bukabije ku bushyuhe bwinshi buri hasi ugereranyije n'ubwa methyl cellulose. Umuti uba uhamye iyo ubitswe ku bushyuhe bw'icyumba.

(3) Hydroxypropyl methyl cellulose irahamye kuri aside na base, kandi umuti wayo w'amazi urahamye cyane mu rugero rwa pH = 2 ~ 12. Soda ya Caustic na lime amazi ntacyo bigira ku miterere yayo, ariko alkali ishobora kwihutisha umuvuduko wayo wo gushonga no kunoza ubukana. Hydroxypropyl methyl cellulose irahamye kuri umunyu rusange, ariko iyo ubwinshi bw'umunyu buri hejuru, ubukana bwa hydroxypropyl methyl cellulose bukunda kwiyongera.

(4) Uburyo selulosi ya hydroxypropyl methyl igumana amazi biterwa n'ingano yayo n'ubukana bwayo, kandi igipimo cyo kubika amazi cya selulosi ya hydroxypropyl methyl kiri hejuru kurusha icya selulosi ya methyl ku gipimo kimwe.

(5) Hydroxypropyl methyl cellulose ishobora kuvangwa n'ibinyabutabire bya polymer bishongeshwa n'amazi kugira ngo bibe umuti umwe kandi woroshye woroshye. Nk'inzoga ya polyvinyl, eteri y'ibirungo, kole y'imboga n'ibindi.

(6) Uburyo cellulose ya hydroxypropyl methyl ifatana n'imiterere ya mortier buruta ubwo cellulose ya methyl.

(7) Hydroxypropyl methyl cellulose ifite ubudahangarwa bwiza bwa enzymes kurusha methyl cellulose, kandi ubushobozi bwayo bwo kwangirika kwa enzymes ni buke ugereranyije n’ubwa methyl cellulose.

18. Ni iki kigomba kwitabwaho mu gushyira mu bikorwa isano iri hagati y’ubushyuhe n’ubushyuhe bwa HPMC?

Igisubizo: UBURYO BWAHPMCbingana mu buryo bunyuranye n'ubushyuhe, ni ukuvuga ko ubushyuhe bwiyongera uko ubushyuhe bugabanuka. Iyo tuvuze ubushyuhe bw'ikintu, tuba tuvuga ubushyuhe bwa 2% by'ikintu mu mazi kuri dogere selisiyusi 20.

Mu buryo bufatika, mu turere dufite itandukaniro rinini ry'ubushyuhe hagati y'impeshyi n'itumba, ni ngombwa kumenya ko ari byiza gukoresha ubushyuhe buke mu gihe cy'itumba, ibyo bikaba byoroshye mu bwubatsi. Bitabaye ibyo, iyo ubushyuhe buri hasi, ubushyuhe bwa selulose buziyongera, kandi iyo busukwa, ubushyuhe buzaba buremereye.

Ubushyuhe buringaniye: 75000-100000 bukoreshwa cyane cyane mu guteka putty.

Impamvu: Amazi agumana neza.

Ubushyuhe bwinshi :150000-200000 bukoreshwa cyane cyane mu gukingira uduce duto twa polystyrene hamwe n'udupira duto twa vitrified beads insulation.

Impamvu: ubushyuhe bwinshi, sima ntabwo byoroshye kuyimanura, amazi anyura mu mazi, kunoza imiterere yayo.

Ariko muri rusange, uko ubushyuhe bwinshi burushaho kwiyongera, niko amazi agumana neza, bityo inganda nyinshi z’imyanda yumye, ukurikije ikiguzi, zikoresha cellulose y’ubushyuhe buringaniye (75000-100000) kugira ngo zisimbuze cellulose y’ubushyuhe buringaniye n’ubushyuhe buringaniye (20000-40000) kugira ngo zigabanye ingano y’inyongera.