1. Ni iyihe mikoreshereze nyamukuru ya hydroxypropyl methyl cellulose?
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'ubuvuzi hakurikijwe ikoreshwa.
2. Hydroxypropyl methyl cellulose igabanyijemo amoko menshi, itandukaniro riri hagati yayo ni irihe?
HPMC ishobora kugabanywamo ibice byihuse (incamake y'ikirango "S") n'ibishyushye bishonga, ibintu byihuse, mu mazi akonje bihita bikwirakwira vuba, bishira mu mazi, muri iki gihe amazi nta mvubura iba ifite, kuko HPMC ikwirakwira gusa mu mazi, nta gushonga nyakuri. Hafi iminota 2, mvubura y'amazi iriyongera buhoro buhoro, igakora gel isobanutse kandi ifata. Ibintu bishyushye bishonga, byivanze mu mazi akonje, bishobora gukwirakwira vuba mu mazi ashyushye, bigashira mu mazi ashyushye, nk'uko ubushyuhe bugabanuka kugera ku bushyuhe runaka (dukurikije ubushyuhe bwa gel bw'umusaruro), mvubura igaragara buhoro buhoro, kugeza igihe habayeho colloid ibonerana ivanze.
3. Ni gute wamenya ubwiza bwa hydroxypropyl methyl cellulose mu buryo bworoshye kandi bwumvikana?
1) Ubuziranenge, nubwo ubuziranenge budashobora kugaragaza niba HPMC ari nziza, kandi iyo bwongewemo mu buryo bwo gukora, buzagira ingaruka ku bwiza bwayo, ariko, ibicuruzwa byiza ahanini ubuziranenge ni bwiza.
2) ubugari: Ubugari bwa HPMC muri rusange ni mesh 80 na mesh 100, 120 ni nkeya, uko irushaho kuba nziza niko irushaho kuba nziza.
3) Kohereza urumuri: HPMC mu mazi, ikora koloyide ibonerana, ibona ko urumuri rwayo rugera, uko ikintu cyoroshye kwinjiramo, gusobanura ibidashonga imbere, koro ihagaze neza muri dogere muri rusange, izohereza bimwe mu byoro ihagaze neza, ariko ntishobora gusobanura ubwiza bw'umusaruro w'ikoro ihagaze ni bwiza kuruta koro ikorwa, hari ibintu byinshi bigena ubwiza bw'umusaruro.
4) igipimo: uko igipimo ari kinini, uko uburemere bungana ni ko burushaho kuba bwiza kurusha igipimo cy’ingenzi, muri rusange bitewe n’uko hifashishijwe hydroxypropyl nyinshi imbere, hydroxypropyl iba nyinshi, kandi amazi agumana neza.
4. Ni ubuhe buryo bwo gushonga bwa hydroxypropyl methyl cellulose?
1) Imiterere yose ishobora kongerwamo ibikoresho hakoreshejwe uburyo bwumye bwo kuvanga;
2) Bigomba kongerwa mu mazi asanzwe ashyushye, ni byiza gukoresha amazi akonje akwirakwira, nyuma yo kuyashyiramo mu minota 10-90 kugira ngo abyibuhe (kangura kangura)
3) Imiterere isanzwe ishobora gushonga nyuma yo kuvanga no gusimbuza amazi ashyushye no kongeramo amazi akonje nyuma yo kuvanga no gukonjesha;
4) Iyo bishongeshejwe, iyo habayeho ikintu cyo gukururana, ni uko gukururana bidahagije cyangwa icyitegererezo gisanzwe cyongewe mu mazi akonje. Muri iki gihe, bigomba gukururwa vuba.
5) Iyo ibibyimba bivutse mu gihe cyo gushonga, bishobora gukurwaho bihagaze amasaha 2-12 (igihe runaka giterwa n'uko umuti umeze) cyangwa hakoreshejwe isuku no gushyiramo igitutu, cyangwa kongeramo ingano ikwiye y'umuti ukuraho ifu.
5 hydroxypropyl methyl cellulose mu ngano y'ifu ya putty?
HPMC mu ikoreshwa nyaryo ry'ingano, hakurikijwe ikirere, ubushyuhe, ubwiza bwa kalisiyumu y'ikijuju, formula y'ifu ya putty n'ibyo abakiriya bakeneye by'ubwiza butandukanye, kandi hari itandukaniro, muri rusange hagati ya kilogarama 4-5.
6. Ni ubuhe buryo bukwiye bwo gupima hydroxypropyl methyl cellulose?
Ifu ya putty muri rusange iba ifite ibinini 100000, ibisabwa na mortier biri hejuru, kugeza kuri 150000 ni byiza gusa, kandi HPMC ni ingenzi cyane ni ukubika amazi, hagakurikiraho gucumba. Mu ifu ya putty, igihe cyose amazi abika neza, viscosity iba iri hasi (7-8), birashoboka kandi, birumvikana ko viscosity iba nini, viscosity ifata amazi iba nziza kurushaho, iyo viscosity irenga 100.000, viscosity ifata amazi iba itari nini cyane.
7. Ni ibihe bikoresho by'ingenzi bya hydroxypropyl methyl cellulose?
HPMCIbikoresho by'ingenzi: ipamba itunganyijwe, chloromethane, propylene oxide, ibindi bikoresho fatizo, alkali y'ibinini, aside toluene.
8. Hydroxypropyl methyl cellulose mu ikoreshwa ry'ifu ya putty, uruhare runini, ese ni imiti?
Mu ifu ya putty, gukurura, kubika amazi no kubaka imikorere itatu. Gukomera, selulose ishobora gukurura kugeza ihagaze, ku buryo umuti ukomeza kuba umwe hejuru no hasi nk'uruhare rwo kurwanya gutemba kw'amazi. Gukomeza amazi: gutuma ifu ya putty yumuka buhoro buhoro, kalisiyumu y'umukara y'inyongera mu bikorwa by'imyitozo y'amazi. Imiterere: amavuta ya selulose, ishobora gutuma ifu ya putty ikora neza. HPMC ntabwo igira uruhare mu bikorwa bya shimi, ahubwo igira uruhare runini mu gushyigikira.
9.hydroxypropyl methyl 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 calcium y'umukara ihinduka ibisigazwa by'ibishyimbo.
10. Ni ibihe bimenyetso by'ingenzi by'ikoranabuhanga bya hydroxypropyl methyl cellulose?
Ibikubiye muri Hydroxypropyl
Ibikubiye muri Methyl
ubushyuhe
ivu
Kugabanya ibiro byumye
11. Ni iki gifitanye isano n'ubushyuhe bwa gel bwa hydroxypropyl methyl cellulose?
Ubushyuhe bwa gel ya HPMC bufitanye isano n'ingano ya methoxyl, uko ingano ya methoxyl iba nke, niko ubushyuhe bwa gel buba bwinshi.
Isano iri hagati ya 12 putty powder na hydroxypropyl methyl cellulose?
Iyo HPMC idafata amazi neza, ifu iratera.
13 hydroxypropyl methyl cellulose mu ikoreshwa ry'ifu ya putty, putty powder bubble ni iyihe mpamvu?
HPMC mu ifu ya putty, ububyimba, kubika amazi no kubaka imirimo itatu, impamvu y'ikibyimba:
1. ) Amazi menshi cyane yongerwamo.
2. ) Igice cyo hasi nticyumye, hanyuma ukagikandaho igice, nacyo byoroshye kugipfuka.
14. Ni irihe tandukaniro riri hagati ya hydroxypropyl methyl cellulose ishonga vuba mu mazi akonje n'ishonga ishonga vuba mu buryo bwo kuyikora?
Ubwoko bw'umuti w'amazi akonje wa HPMC ni nyuma yo gusukura ubuso bwa glyoxal, ushyirwa mu mazi akonje uhita ushonga, ariko ntushonge neza, ubushyuhe buriyongera, urashonga. Ubwoko bw'umuti ushongeshwa n'ubushyuhe ntibwasuzumwe na glyoxal. Ingano ya glyoxal ni nini, ikwirakwira vuba, ariko ubushyuhe buragabanuka, ingano ni nto, ahubwo ni nke.
15. Ni iki kivugwa ku mpumuro ya hydroxypropyl methyl cellulose?
HPMC ikorwa hakoreshejwe uburyo bwa solvent ikozwe muri toluene na isopropyl alcohol. Iyo gukaraba bitagenze neza cyane, hazabaho uburyohe busigaye. (Gusubiza impumuro nziza ni cyo gikorwa cy'ingenzi cyo kuvura impumuro mbi)
16. Ni gute wahitamo selulose ya hydroxypropyl methyl ikwiye gukoreshwa mu buryo butandukanye?
Ifu ya putty: isaba amazi menshi, ijyanye neza n'inyubako (urwego rwasabwa: 75AX100000)
Sima isanzwe ishingiye kuri sima: amazi menshi agumana, ubushyuhe bwinshi, ubushyuhe bwihuse (urwego rwemewe: 75AX150000)
Gukoresha kole yo kubaka: ibikoresho byihuse, ubushyuhe bwinshi. (Nomero y'ikirango isabwa: 75AX200000S)
Uduce twa Gypsum: amazi menshi agumana, ubushyuhe buri hagati n'ubushyuhe buke, ubushyuhe bwihuse (urwego rwemewe: 75AX75000)
17. Izina ry'ikinyabutabire cya hydroxypropyl methyl cellulose ni irihe?
HPMC cyangwa MHPC bita hydroxypropyl methyl cellulose, cellulose hydroxypropyl methyl ether.
18. Ni irihe tandukaniro riri hagati ya hydroxypropyl methyl cellulose naMC?
MC ni selulosi ya methyl, ni ipamba itunganyijwe nyuma yo gusukurwa na alkali, methane chloride nk'ikintu gitanga ubushyuhe, binyuze mu buryo butandukanye kandi ikorwa na eteri ya selulosi, urwego rusange rwo gusimbuza ni 1.6-2.0, urwego rutandukanye rwo gusimbuza narwo ruratandukanye, ni urwa eteri ya selulosi itari ioni.
(1) Uburyo methyl cellulose igumana amazi biterwa n'ingano yayo, ubukana, ubukana bw'uduce duto n'umuvuduko wo gushonga. Muri rusange, ingano yo kongeramo ni nini, ubukana ni buto, ubukana ni bwinshi, umuvuduko wo kubika amazi ni munini, ingano yo kongeramo igira ingaruka zikomeye ku muvuduko wo kubika amazi, ubukana n'umuvuduko wo kubika amazi ntabwo biri munsi y'isano, umuvuduko wo gushonga uterwa ahanini n'urwego rwo guhindura ubuso n'ubukana bw'uduce duto twa cellulose. Methyl cellulose na hydroxypropyl methyl cellulose muri ether nyinshi za cellulose zavuzwe haruguru zifite umuvuduko wo kubika amazi uri hejuru.
(2) Methyl cellulose ishobora gushonga mu mazi akonje, amazi ashyushye azagorana gushonga, umuti wayo w’amazi uri mu gipimo cya pH = 3-12 urahamye cyane, kandi sitashi, n'ibindi, hamwe n'ibintu byinshi bihuza neza, iyo ubushyuhe bugeze ku bushyuhe bwa gelation, hazabaho gelation idasanzwe.
(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 methyl burenze dogere 40, kubika amazi muri selulosi ya methyl bizaba bibi cyane, ibyo bikaba bigira ingaruka zikomeye ku buryo selulosi ikora.
(4)Selulose ya MethylIfite ingaruka zigaragara ku buryo ibumba n'uburyo ibumba rifatana. Ubufatanye hano bwerekeza ku mbaraga z'ubufatana hagati y'igikoresho n'urukuta rw'umukozi, ni ukuvuga uburyo ibumba rifatana. Ubufatanye ni bwinshi, ubukana bw'ubufatana ...
Igihe cyo kohereza ubutumwa: 25 Mata 2024