1. Ni iyihe mikoreshereze nyamukuru ya selulose?
HPMCikoreshwa 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'inganda, urwego rw'ibiribwa n'urwego rw'imiti hakurikijwe ikoreshwa.
2. Hari ubwoko butandukanye bwa selulose, kandi ni ubuhe budasa mu mikoreshereze yabwo?
HPMC ishobora kugabanywamo ubwoko bw'ingufu (inyuguti y'ikirango "S") n'ubwoko bw'ingufu zishyushye. Ibicuruzwa by'ingufu zishyushye bikwirakwira vuba mu mazi akonje bikabura mu mazi. Muri iki gihe, amazi nta mvubura aba afite kuko HPMC ikwirakwira gusa mu mazi nta gushonga nyako. Mu gihe cy'iminota 2, mvubura y'amazi yiyongera buhoro buhoro, igakora colloid y'umweru ifite mvubura. Ibicuruzwa bishyushye bishira, iyo bihuye n'amazi akonje, bishobora gukwirakwira vuba mu mazi ashyushye bikabura mu mazi ashyushye. Iyo ubushyuhe bugabanutse bukagera ku bushyuhe runaka (hakurikijwe ubushyuhe bwa gel bw'ibicuruzwa), mvubura izagenda igaragara buhoro buhoro kugeza igihe ikoze colloid ifite mvubura ishyushye.
3. Ni ubuhe buryo bwo gushonga selulose?
1). Imiterere yose ishobora kongerwa ku bikoresho binyuze mu kuvanga byumye;
2). Iyo bikenewe kongerwa mu gipimo cy'amazi gisanzwe gishyuha, ni byiza gukoresha ubwoko bw'amazi akonje akwirakwira. Ubusanzwe bifata iminota 1-30 kugira ngo bibyimbe nyuma yo kongeramo (kangura hanyuma uvange)
3). Ingero zisanzwe zibanza gukangwa no gukurwamo amazi ashyushye, hanyuma zigashonga mu mazi akonje nyuma yo gukangwa no gukonjeshwa;
4). Iyo iteranya ribaye mu gihe cyo gushonga, ni ukubera ko kuvanga bidahagije cyangwa kongerwamo icyitegererezo gisanzwe mu mazi akonje. Muri iki gihe, bigomba kuvangwa vuba.
5). Iyo uduheri twavutse mu gihe cyo gushonga, dushobora gusigara duhagaze amasaha 2-12 (igihe cyihariye kigenwa n'uburyo umuti uhagaze) cyangwa tukavanwaho hakoreshejwe isuku, imashini itera umuvuduko, nibindi, kandi ingano ikwiye y'umuti ukuraho ifu ishobora no kongerwamo.
4. Ni gute wasuzuma ubwiza bwa selulose mu buryo bworoshye kandi bwumvikana?
1) Ubuziranenge, nubwo ubuziranenge budashobora kugaragaza niba HPMC yoroshye gukoresha, kandi niba ibikoresho byo gushushanya byongewemo mu gikorwa cyo kuyitunganya, bizagira ingaruka ku bwiza bwayo, ariko ibicuruzwa byinshi byiza bifite ubuziranenge bwiza.
2) Uburyohe: Uburyohe bwaHPMCMuri rusange ifite mesh 80 na mesh 100, mesh 120 ni nke, iyo irushaho kuba nziza niyo irushaho kuba nziza.
3) Kohereza urumuri: Nyuma yuko HPMC ishyizwe mu mazi kugira ngo ikore colloid ibonerana, reba uburyo urumuri rwayo runyuramo. Uko urumuri runyuramo ari rwinshi, ni ko rurushaho kuba rwiza, bigaragaza ko hari ibintu bidashonga cyane, kandi ko kohereza kwa reactors zihagaze muri rusange biba byiza. , Reactor itambitse iba mbi cyane, ariko ntibivuze ko ubwiza bwa reactor ihagaze ari bwiza kurusha ubw'areactor itambitse, kandi hari ibintu byinshi bigena ubwiza bw'ibicuruzwa.
4) Uburemere bwihariye: Uko uburemere bwihariye burushaho kuba bwinshi, niko uburemere burushaho kuba bwiza. Uko uburemere bwihariye burushaho kuba bwinshi, niko hydroxypropyl iba nyinshi mu gicuruzwa. Uko hydroxypropyl iba nyinshi, niko amazi arushaho kugumana neza.
5. Ni ingano ingana iki ya selulose iri mu ifu ya putty?
Ingano ya HPMC ikoreshwa mu bikorwa iterwa n'ikirere, ubushyuhe, ubwiza bwa kalisiyumu y'ivu yo mu gace runaka, formula y'ifu ya putty n'ubwiza busabwa n'abakiriya. Hari itandukaniro ahantu hatandukanye, muri rusange, ni hagati ya kg 4-5.
6. Ni ubuhe buryo bukwiye bwo gupima ubukana bwa selulose?
Muri rusange, ifu ya puti 100.000 irahagije, kandi ibisabwa muri mortilo ni byinshi, kandi ikenera 150.000 kugira ngo yorohe kuyikoresha. Byongeye kandi, akazi k'ingenzi ka HPMC ni ukubika amazi, hagakurikiraho gukuba. Mu ifu ya putilo, igihe cyose amazi abika neza kandi viscosity ikaba iri hasi (7-8), birashoboka. Birumvikana ko uko viscosity iba nyinshi, ni ko amazi abika neza. Iyo viscosity irenze 100.000, viscosity ntacyo igira ku kubika amazi.
7. Ni ibihe bimenyetso by'ingenzi bya tekiniki bya selulose?
Ibikubiye muri Hydroxypropyl
Ibikubiye muri Methyl
ubushyuhe
Ivu
Igihombo ku kumisha
8. Ni ibihe bintu by'ingenzi bigize selulose?
Ibikoresho by'ingenzi bya HPMC: ipamba itunganyijwe, methyl chloride, propylene oxide, soda y'amazi ikoze mu bimera, n'ibindi.
9. Ni iyihe nshingano nyamukuru yo gukoresha selulose mu ifu ya putty? Ese hari uburyo bwo gukora imiti?
Muri putty powder, igira uruhare rutatu mu gutuma ifu y’ifu ikomera, ifata amazi neza kandi igakora. Gukomera, cellulose ishobora gukomera kugira ngo igume ihagaze neza, igakomeza kuzamuka no kumanuka, kandi ikarinda kugwa. Gukomera kw’amazi: gutuma putty powder yumuka buhoro buhoro, kandi igafasha calcium y’ivu gukora neza iyo amazi akoze. Imiterere: Cellulose ifite ubushobozi bwo gusiga amavuta, ishobora gutuma putty powder igira imiterere myiza. HPMC ntabwo igira uruhare mu mikorere iyo ari yo yose ya shimi, ahubwo igira uruhare rw’inyongera gusa.
10. Cellulose ni eteri ya cellulose itari ionic, none se iyo itari ionic ni iki?
Mu magambo y’abantu basanzwe, ibintu bitagira ingaruka ku bintu ntibigira uruhare mu bikorwa bya shimi.
CMC (carboxymethyl cellulose) ni cellulose ya cationic, bityo izahinduka umusemburo w'ibishyimbo iyo ihuye na calcium y'ivu.
11 Ubushyuhe bwa gel bwa cellulose bufitanye isano irihe?
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 yo kubura ifu ya putty na cellulose?
Hari isano! ! ! Ni ukuvuga ko kuba amazi make ya HPMC abikwa neza bizatera ifu itakaza (ingano y'ibikoresho nk'ivu, kalisiyumu nyinshi, na sima, ubushyuhe bw'inyubako, n'imiterere y'inkuta byose bizahinduka).
13. Ni irihe tandukaniro riri hagati ya selulose ishongera mu mazi akonje n'iy'ishyushye mu gukora?
Ubwoko bwa HPMC bukoresha amazi akonje buvurwa na glyoxal ku buso, kandi bukwirakwira vuba mu mazi akonje, ariko ntabwo bushonga mu by'ukuri. Bushonga gusa iyo ubushyuhe bwiyongeye. Ubwoko bwa hot melt ntibuvurwa na glyoxal ku buso. Iyo ingano ya glyoxal ari nini, ubushyuhe buziyongera buhoro buhoro, kandi niba ingano ari nto, ibinyuranye n'ibyo bizaba.
14. Kuki selulosi ifite impumuro mbi?
HPMC ikorwa n'uburyo bwo gushonga ikoresha toluene na isopropanol nk'imiti isukura. Iyo gukaraba bitagenze neza cyane, hazabaho impumuro isigaye. (Gusubiza impumuro mu buryo bwo gushonga ni cyo gikorwa cy'ingenzi cyo kuvura impumuro mbi)
15. Ni gute wahitamo selulosi ikwiriye imirimo itandukanye?
Ifu ya putty: isaba amazi menshi kandi yoroshye kubaka
Sima isanzwe ishingiye kuri sima: isaba amazi menshi, ubushyuhe bwinshi, no gukomera ako kanya
Gukoresha kole y'ubwubatsi: ibikoresho byihuse bifite ubukana bwinshi. (urwego rusabwa
Uduce twa Gypsum: amazi menshi agumana, ubushyuhe buri hagati n'ubushyuhe buke, ubushyuhe buhita bwiyongera
16. Izina rindi rya selulose ni irihe?
Bizwi nka HPMC cyangwa MHPC bita hypromellose, cellulose hydroxypropyl methyl ether.
17. Gukoresha selulose mu ifu ya putty, ni iyihe mpamvu ituma habaho utubumbe mu ifu ya putty?
Mu ifu ya putty, HPMC igira inshingano eshatu zo gukurura, kubika amazi no kubaka. Impamvu z'utubyimba ni izi:
1. Amazi menshi cyane yongerwamo.
2. Igice cyo hasi nticyumye, gusa gukurura ikindi gice hejuru, kandi biroroshye gufuro.
18. Ni irihe tandukaniro riri hagati ya selulose na MC:
MC ni selulosi ya methyl, ikorwa muri eteri ya selulosi binyuze mu gutunganya ipamba itunganyijwe na alkali, hakoreshejwe methane chloride nk'igikoresho cyo gukwirakwiza eteri, kandi igakora ibikorwa bitandukanye. Muri rusange, urwego rwo gusimbuza ni 1.6-2.0, kandi gushonga kuratandukanye bitewe n'urwego rwo gusimbuza. Bitandukanye, ni iya eteri ya selulosi itari ioni.
(1) Uburyo methylcellulose igumana amazi biterwa n'ingano yayo, ubukana, ubukana bw'uduce duto n'umuvuduko wo gusenyuka. Muri rusange, niba ingano yo kongeramo ari nini, ubukana ni buto, kandi ubukana ari bwinshi, umuvuduko wo kubika amazi ni munini. Muri byo, ingano yo kongeramo igira ingaruka nini ku muvuduko wo kubika amazi mu bantu. Ubukana ntabwo bungana n'umuvuduko wo kubika amazi. Umuvuduko wo gusenyuka uterwa ahanini n'ubuso bw'uduce twa cellulose. Ingano yo guhinduka n'ubukana bw'uduce duto. Muri eteri nyinshi za cellulose zavuzwe haruguru, umuvuduko wo kubika amazi wa methyl cellulose na Jinshuiqiao cellulose ni munini.
(2) Methylcellulose ishongeshwa mu mazi akonje, kandi bizagorana kuyishongesha mu mazi ashyushye. Umuti wayo w'amazi uhamye cyane mu rugero rwa ph = 3-12. Ifite ubushobozi bwo guhuza neza na sitashi, nibindi nibindi hamwe nibindi bintu byinshi biyitera imbaraga. Iyo ubushyuhe bugeze ku bushyuhe, irahinduka.
(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 umuvuduko wo kubika amazi uba mubi kurushaho. Iyo ubushyuhe bwa selulosi ya mortiweri burenze dogere 40, umuvuduko wo kubika amazi muri selulosi ya methylweri uzagabanuka cyane, ibyo bizagira ingaruka zikomeye ku iyubakwa rya selulosi.
(4)Selulose ya Methylbigira ingaruka zikomeye ku iyubakwa n'ifatana rya sima. Gufatana hano bivuga imbaraga zo gufatana hagati y'igikoresho cy'umukozi n'igice cy'urukuta, ni ukuvuga imbaraga zo gufatana za sima. Gufatana ni byinshi, imbaraga zo gufatana za sima ni nyinshi, kandi imbaraga zisabwa n'abakozi mu ikoreshwa nazo ni nyinshi, kandi imikorere y'itumana ni mibi.
Igihe cyo kohereza ubutumwa: 25 Mata 2024