Ibibazo bikunze kugaragara bya Hydroxypropyl methyl cellulose

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

HPMCikoreshwa cyane mu bikoresho by'ubwubatsi, 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. Kuri ubu, urwego rwinshi rw'ubwubatsi bwo mu ngo, mu rwego rw'ubwubatsi, ingano y'ifu ya putty ni nini, hafi 90% ikoreshwa mu gukora ifu ya putty, ibisigaye bikoreshwa mu gukora sima na kole.

2, hydroxypropyl methyl cellulose (HPMC) igabanyijemo ibice byinshi, itandukaniro riri he mu ikoreshwa ryayo?

HPMC ishobora kugabanywamo ubwoko bw'umuti uhita n'ubwoko bw'umuti ushyushye, ibicuruzwa by'umuti uhita, bigatabwa vuba mu mazi akonje, bigashira mu mazi, muri iki gihe amazi nta ruhushya agira, kuko HPMC ikwirakwira gusa mu mazi, nta gushonga nyako. Hafi iminota 2, uruhushya rw'umuti uhita rwiyongera buhoro buhoro, rugakora colloid ibonerana. Ibikoresho bishyushye bishonga, mu mazi akonje, bishobora gutabwa vuba mu mazi ashyushye, bigashira mu mazi ashyushye, iyo ubushyuhe bugabanutse kugera ku bushyuhe runaka, uruhushya rugaragara buhoro buhoro, kugeza igihe habayeho colloid ibonerana. Umuti ushyushye ushobora gukoreshwa gusa mu ifu ya putty na mortar, mu mazi kole n'irangi, hazabaho ikintu cy'itsinda, ntushobora gukoreshwa. ICYITONDERWA CY'UMUTI UHUSE, URUGERO RW'IBIKORESHO NI RWINSHI CYANE, MU KURAMBUKA N'IFU Y'ABANA N'IMYAMBA, NO MU MAZI Y'UBUZIMA N'IMITIMA, BYOSE BISHOBORA GUKORESHA, HATARIHO IBIBAZO BYO KUDAHUZA.

3, uburyo bwo gushonga bwa hydroxypropyl methyl cellulose (HPMC) bufite ibyo?

Uburyo bwo gushonga mu mazi 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) Shyira amazi ashyushye akenewe mu gikoresho hanyuma uyashyushye kugeza kuri dogere 70. Ongeramo buhoro buhoro hydroxypropyl methylcellulose ukoresheje uruvange buhoro buhoro, HPMC itangira kureremba hejuru y'amazi, hanyuma buhoro buhoro ikora uruvange, munsi uruvange ikonjesha uruvange.

2), ongeramo ingano ikenewe ya 1/3 cyangwa 2/3 y'amazi mu gikoresho, hanyuma ushyushye kugeza kuri 70°C, ukurikije uburyo bwa 1), gukwirakwiza HPMC, gutegura igishishwa cy'amazi ashyushye; Hanyuma ongeramo andi mazi akonje asigaye ku gishishwa gishyushye, uvange hanyuma ukonjeshe uruvange.

Uburyo bwo kuvanga ifu: Ifu ya HPMC n'ibindi bintu byinshi bigize ifu, bivanze neza n'icyuma gikoresha ikoranabuhanga ryo gusya, nyuma yo kongeramo amazi kugira ngo bishonge, hanyuma HPMC ishobora gushonga muri iki gihe, ariko ntabwo ihuza, kuko buri mfuruka nto, ifu nto ya HPMC gusa, amazi azahita ashonga. - Ibigo bikora ifu ya putty na mortar birimo gukoresha ubu buryo. Hydroxypropyl methyl cellulose (HPMC) ikoreshwa nk'ikintu gikomeza ubukana n'ikintu gikomeza amazi muri mortar ya putty.

4, ni mu buhe buryo bworoshye kandi bwumvikana mu kumenya ubwiza bwa hydroxypropyl methyl cellulose (HPMC)?

(1) umweru: nubwo umweru udashobora kumenya niba HPMC yoroshye gukoresha, kandi iyo yongewemo mu gikorwa cyo kuyitunganya, bigira ingaruka ku bwiza bwayo. Ariko, ibicuruzwa byiza ahanini ni umweru.

(2) ubugari: Ubugari bwa HPMC muri rusange bufite mesh 80 na mesh 100, intego yabwo igabanutseho 120, Hebei HPMC ifite mesh 80, uko ubugari bwayo burushaho kuba bwiza, muri rusange niko burushaho kuba bwiza.

(3) kohereza: hydroxypropyl methyl cellulose (HPMC) mu mazi, ikorwa rya colloid ibonerana, reba uko yohereza, uko yohereza ari nyinshi, ni ko ibintu birushaho kuba byiza, ibintu bidashonga neza imbere. Uburyo bwo kwinjira kwa reactor ihagaze muri rusange ni bwiza, reactor itambitse ni mbi, ariko ntishobora kwerekana ko ubwiza bw'umusaruro wa reactor ihagaze ari bwiza kurusha uwo ikorwa na reactor itambitse, ubwiza bw'umusaruro bugenwa n'ibintu byinshi.

(4) uburemere bwihariye: uko uburemere bwihariye burushaho kuba bwinshi, niko uburemere burushaho kuba bwiza. Kurusha uburemere, muri rusange kubera ko ingano ya hydroxypropyl ari nyinshi, ingano ya hydroxypropyl ni nyinshi, hanyuma amazi akaba meza kurushaho.

5, hydroxypropyl methyl cellulose (HPMC) mu rugero rw'ifu ya putty?

HPMC mu ikoreshwa nyaryo ry'igipimo, hakurikijwe ikirere, ubushyuhe, ubwiza bw'ivu rya kalisiyumu ryo mu gace runaka, formula y'ifu ya putty n' "ibisabwa n'abakiriya ku bwiza", kandi bifite itandukaniro. Muri rusange, hagati ya kilogarama enye na eshanu. Urugero: ifu ya putty ya Beijing, ishyirwamo kilogarama 5; I Guizhou, inyinshi muri zo ni kilogarama 5 mu mpeshyi na kilogarama 4.5 mu gihe cy'itumba. Ingano ya Yunnan ni nto, muri rusange ni kilogarama 3 -4 n'ibindi.

6, hydroxypropyl methyl cellulose (HPMC) ni ingano ki y'ubushyuhe ikwiye?

IFU Y'UMWANA NI URUBUGA RWOSE IBIHUMBI 100, IGIKORESHO CYAYO NI MUREMU CYANE, WIFUZA UBUSHOBOZI BW'IBICIRO 150 BWO GUKORESHA. Byongeye kandi, uruhare runini rwa HPMC ni ukubika amazi, hagakurikiraho gukuba. Mu ifu ya putty, igihe cyose amazi abika neza, ubushyuhe buri hasi (7-80,000), birashoboka kandi, birumvikana ko ubushyuhe buba bunini, ubushyuhe bufata amazi ni bwiza kurushaho, iyo ubushyuhe burenze ibihumbi 100, ubushyuhe budakora cyane ku kubika amazi.

7, hydroxypropyl methyl cellulose (HPMC) ni ibihe bimenyetso by'ingenzi by'ikoranabuhanga?

Ingano ya Hydroxypropyl n'ubukana, abakoresha benshi bahangayikishijwe n'ibi bipimo bibiri. Ingano ya Hydroxypropyl ni nyinshi, ubusanzwe amazi agumana neza. Ubukana, amazi agumana neza, ugereranije (ariko atari burundu) nabyo ni byiza, hamwe n'ubukana, muri sima ya sima ni byiza gukoresha bimwe muri byo.

8, hydroxypropyl methyl cellulose (HPMC) ibikoresho by'ingenzi ni ibihe?

Hydroxypropyl methyl cellulose (HPMC) ibikoresho by'ingenzi: ipamba itunganyijwe, chloromethane, propylene oxide, ibindi bikoresho fatizo, ibinini bya alkali, aside, toluene, isopropyl alcohol n'ibindi.

9, HPMC mu ikoreshwa ry'ifu ya putty, ni uruhe ruhare rw'ingenzi, yaba shimi?

HPMC mu ifu ya putty, gukurura, kubika amazi no kubaka imirimo itatu. Gukomera: Selilulose ishobora gukurura kugira ngo ikore suspension, kugira ngo umuti ukomeze kuba umwe hejuru no hasi, urwanya gutemba kw'amazi. Gukomeza amazi: gutuma ifu ya putty yumuka buhoro buhoro, ivu ry'inyongera rya kalisiyumu munsi y'ibikorwa by'amazi. Imiterere: Selilulose ifite ingaruka zo gusiga amavuta, ishobora gutuma ifu ya putty igira imiterere myiza. HPMC ntiyitabira ibikorwa bya shimi, ikora gusa uruhare rw'inyongera. Amazi yongewemo ifu ya putty, ku rukuta, ni imikorere ya shimi, kuko habaho ikorwa ry'ibikoresho bishya, ifu ya putty ku rukuta iva ku rukuta, igasenywa ikavamo ifu, hanyuma igakoreshwa, ntabwo ikiriho, kuko yashyizeho ibikoresho bishya (calcium carbonate). Ibice by'ingenzi bigize ifu ya kalisiyumu y'umukara ni: Ca(OH)2, CaO n'uruvange ruto rwa CaCO3, CaO+H2O=Ca(OH)2 – Ca(OH)2+CO2=CaCO3↓+H2O ivu rya kalisiyumu mu mazi no mu mwuka munsi y'ibikorwa bya CO2, ikorwa rya kalisiyumu karubone, na HPMC gusa ibungabunga amazi, ivu rya kalisiyumu ryifashishwa mu gukora neza, ubwaryo ntibwitabiriye igikorwa icyo ari cyo cyose.

10, eteri ya selulose idafite ionic ya HPMC, none se idafite ionic ni iki?

Muri rusange, nonionic ni ikintu kidahinduka iyoni mu mazi. Iyonisation ni inzira electrolyte ivangwamo iyoni zigenda zishyushye mu buryo bwigenga mu kintu runaka, nk'amazi cyangwa alcool. Urugero, sodium chloride (NaCl), umunyu turya buri munsi, irashonga mu mazi igahinduka iyoni kugira ngo ikore iyoni za sodium zigenda zifunguye (Na+) zifite amashanyarazi meza na iyoni za chloride (Cl) zifite amashanyarazi mabi. Mu yandi magambo, HPMC mu mazi ntihinduka iyoni zifite amashanyarazi, ahubwo ibaho nk'ibintu binini.

11, ubushyuhe bwa gel ya hydroxypropyl methylcellulose n'iki gifitanye isano?

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'ifu ya putty na HPMC?

Ifu y'ifu ya putty n'ubwiza bwa calcium bifite isano ikomeye, kandi HPMC ntabwo ifite isano rinini. Ingano nke ya calcium muri calcium n'ikigereranyo cya CaO, Ca(OH)2 mu ivu rya calcium ntabwo bikwiye, bizatuma ifu igabanuka. Niba bifitanye isano na HPMC, ubwo amazi ya HPMC aba make, bizatuma ifu igabanuka. Ku mpamvu zihariye, reba ikibazo cya 9.

13, ubwoko bwa hydroxypropyl methylcellulose bushongeshwa mu mazi akonje n'ubwoko bushyushye bushongeshwa mu ikorwa, itandukaniro ni irihe?

Ubwoko bw'amazi akonje ashongeshwa na HPMC ni nyuma yo gusukura ubuso bwa glyoxal, mu mazi akonje buhita butatana, ariko ntibushonge neza, ubushyuhe burazamuka, bugashonga. Ubwoko bw'amazi ashongeshwa n'ubushyuhe ntibwasuwe ubuso na glyoxal. Ingano ya glyoxal ni nini, gutatana ni vuba, ariko ubushyuhe buragenda buhoro, ingano ni nto, ahubwo.

14, hydroxypropyl methyl cellulose (HPMC) ifite impumuro y'ibirimo kuba?

HPMC ikorwa hakoreshejwe uburyo bwo gushonga ikozwe muri toluene na isopropyl alcohol nk'umusemburo. Iyo gukaraba bitameze neza cyane, hazabaho uburyohe busigaye.

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

IGICE CYA PUTTY: igisabwa ni gito, ubukana ni ibihumbi 100, nta kibazo, icy'ingenzi ni ugukomeza amazi neza. Gukoresha morti: igisabwa ni kinini, igisabwa ni ubukana bwinshi, ibihumbi 150 bigomba kuba byiza kurushaho. Gukoresha kole: hakenewe ibikoresho byihuse, ubukana bwinshi.

16, hydroxypropyl methylcellulose ni irihe zina?

Hydroxypropyl Methyl Cellulose, Icyongereza: Hydroxypropyl Methyl Cellulose incamake: HPMC cyangwa MHPC iriho izina: Hydroxypropyl Methyl Cellulose; Cellulose hydroxypropyl methyl ether; Cellulose hydroxypropyl Methyl ether Hypromellose, 2-hydroxypropylmethyl Cellulose ether. Cellulose hydroxypropyl Methyl ether Hyprolose.

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

HPMC mu ifu ya putty, gukurura, kubika amazi no kubaka ibintu bitatu. Ntiyitabira igikorwa icyo ari cyo cyose. Impamvu y'utubyimba: 1, amazi yashyizwemo menshi cyane. 2, hasi ntabwo yumye, hejuru no gukurura urwego, kandi byoroshye kuyapfuka.

18. Ifu y'ifu ya putty ku nkuta z'imbere n'inyuma?

Ifu ya putty yo ku rukuta rw'imbere: 800KG ya kalisiyumu nyinshi na 150KG ya kalisiyumu y'umukara (starch ether, icyatsi kibisi gusa, ubutaka bwa peng, aside citric na polyacrylamide bishobora kongerwamo uko bikwiye)

Ifu y'isukari yo ku rukuta yo hanze: sima 350KG kalisiyumu ikomeye 500KG umusenyi wa quartz 150KG ifu ya latex 8-12kg eteri ya selulose 3KG eteri ya sitashi 0.5kg fibre y'ibiti 2KG

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

MC ni selulosi ya methyl, ipamba itunganyijwe nyuma yo gusukurwa na alkali, hamwe na methane chloride nk'ikintu gitanga eteri, binyuze mu buryo butandukanye bwo gukora eteri ya selulosi. Muri rusange, urwego rwo gusimbuza ni 1.6 ~ 2.0, kandi gushonga kuratandukanye bitewe n'urwego rwo gusimbuza. Ni eteri ya selulosi idafite ionic.

(1) Uburyo metili selulosi igumana amazi biterwa n'ingano y'inyongera, ubukana, ubukana bw'uduce duto n'umuvuduko wo gushonga. Muri rusange kongeramo ingano nini, ubukana buto, ubukana, igipimo cyo hejuru cyo gufata amazi. Muri byo, ingano y'inyongera ku gipimo cyo gufata amazi igira ingaruka nini, ubukana n'urwego rw'igipimo cyo gufata amazi ntabwo bingana n'isano. Igipimo cyo gushonga giterwa ahanini n'urwego rwo guhindura ubuso n'ubukana bw'uduce duto twa selulosi. Muri eteri ya selulosi yavuzwe haruguru, igipimo cyo gufata amazi cya metili selulosi na hydroxypropyl methyl selulosi ni kinini.

(2) Methyl cellulose ishobora gushonga mu mazi akonje, amazi ashyushye ashonga azahura n'ingorane, umuti wayo w'amazi uri mu gipimo cya pH = 3 ~ 12 urahamye cyane. 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 ya mortiweri burenze 40°C, kubika amazi muri selulosi ya methylweri bizarushaho kuba bibi cyane, bikagira ingaruka zikomeye ku bwubatsi bwa selulosi.

(4) Methyl cellulose ifite ingaruka zigaragara ku iyubakwa n'ifatana rya morti. Aha, "gufatana" bivuga imbaraga z'ubukorikori ziva hagati y'igikoresho cy'umukozi n'urukuta, ni ukuvuga imbaraga z'ubukorikori bw'urukuta. Imiterere y'ubukorikori ni nini, imbaraga z'ubukorikori bw'urukuta ni nini, kandi imbaraga zisabwa n'abakozi mu ikoreshwa nazo ni nini, bityo ubushobozi bw'ubwubatsi bw'urukuta ni bubi. Mu bicuruzwa bya cellulose ether, uburyo methyl cellulose ifatana buri ku rwego rwo hagati.

HPMC yo muri hydroxypropyl methyl cellulose, ikorwa mu ipamba itunganyijwe nyuma yo kuvurwa na alkalize, hamwe na 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 iterwa n'ikigereranyo cy'ibikubiye muri methoxy n'ibikubiye muri hydroxypropyl.

(1) hydroxypropyl methyl cellulose ishongeshwa mu mazi akonje, amazi ashyushye ashongeshwa azahura n'ingorane. Ariko ubushyuhe bwayo bwo gukaraba mu mazi ashyushye buri hejuru cyane ugereranyije n'ubwa methyl cellulose. Uburyo methyl cellulose ishongeshwamo mu mazi akonje nabwo burarushaho kwiyongera.

(2) ubushyuhe bwa hydroxypropyl methyl cellulose bufitanye isano n'uburemere bwayo bwa molekile, naho uburemere bwa molekile nini ni ubushyuhe bwinshi. Ubushyuhe buzagira ingaruka ku bushyuhe bwayo, ubushyuhe bwiyongera, ubushyuhe bukagabanuka. Ariko, ubushyuhe bwinshi ni buke ugereranyije n'ubwa methyl cellulose. Umuti uba uhamye iyo ubitswe ku bushyuhe bw'icyumba.

(3) hydroxypropyl methyl cellulose ihamye kuri aside na alkali, kandi umuti wayo w'amazi uhamye cyane mu gipimo cya pH = 2 ~ 12. Soda ya Caustic na lime amazi nta ngaruka nini bigira ku miterere yayo, ariko alkali ishobora kwihutisha umuvuduko wayo wo gushonga no kunoza ubukana bw'agapira. Hydroxypropyl methyl cellulose ihamye kuri umunyu rusange, ariko iyo ubwinshi bw'umunyu buri hejuru, ubukana bw'umuti wa hydroxypropyl methyl cellulose bukunze kwiyongera.

(4) Uburyo selulosi ya hydroxypropyl methyl igumana amazi biterwa n'ingano y'inyongera zayo, ubukana bwayo, n'ibindi, ingano imwe y'uburyo amazi agumana amazi iri hejuru ugereranyije na selulosi ya methyl.

(5) hydroxypropyl methyl cellulose ishobora kuvangwa n'ibinyabutabire bya polymer bishongeshwa n'amazi kugira ngo bibe umuti umwe kandi woroshye wo kuzura. Nk'inzoga ya polyvinyl, eteri y'ibimera, gum y'ibimera 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 enzyme kurusha methyl cellulose, kandi amahirwe yo kwangirika kwa enzymes mu gisubizo cyayo ni make ugereranyije n’aya methyl cellulose.

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

Ubushyuhe bwa HPMC bungana mu buryo bunyuranye n'ubushyuhe, ni ukuvuga ko ubushyuhe bwiyongera uko ubushyuhe bugabanuka. Iyo tuvuze ubushyuhe bw'ikintu, tuba dushaka kuvuga umusaruro wo gupima 2% by'amazi yacyo ku bushyuhe bwa dogere selisiyusi 20.

Mu buryo bufatika, mu turere dufite itandukaniro rinini ry'ubushyuhe hagati y'impeshyi n'itumba, hakwiye kwitabwaho inama yo gukoresha ubushyuhe buke mu gihe cy'itumba, ibyo bikaba byorohereza kubaka. Bitabaye ibyo, iyo ubushyuhe buri hasi, ubushyuhe bwa selulose buziyongera, iyo busukwa, ibyiyumvo bizaba biremereye.

Uburemere buringaniye: 75000-100000 bukoreshwa cyane cyane mu guteka putty

Impamvu: amazi agumana neza

Ubushyuhe bwinshi:150000-200000 bukoreshwa cyane cyane mu gushonga uduce twa polystyrene. Ifu ya mortilage ikoreshwa mu gushonga ubushyuhe n'udupira tw'ibirahure.

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

Ariko muri rusange, uko ubushyuhe bwinshi buzamuka, niko amazi agumana neza, bityo inganda nyinshi z’imyanda yumye zitekereza ku giciro, aho cellulose ifite ubushyuhe buringaniye (75.000-100.000) isimbura cellulose ifite ubushyuhe buke (20.000-40.000) kugira ngo bigabanye ingano y’inyongera.