Methylcellulose (MC) ni polymer isanzwe ikorwa hakoreshejwe imiti, ether ya cellulose yahinduwe iboneka binyuze muri cellulose karemano ya methylate. Bitewe n'imiterere yayo yihariye y'umubiri n'imiti, ikoreshwa cyane mu bwubatsi, mu biribwa, mu buvuzi, mu kwisiga, mu mpapuro no mu gusiga.
1. Gushyira mu byiciro hakurikijwe urwego rw'isimbuza
Igipimo cyo gusimbuza (DS) kivuga ku gaciro mpuzandengo k'amatsinda ya hydroxyl asimbuwe n'amatsinda ya methyl kuri buri gice cya glucose muri methylcellulose. Hari amatsinda 3 ya hydroxyl kuri buri ruziga rwa glucose rwa molekile ya selulosi ashobora gusimbuzwa n'amatsinda ya methyl. Kubwibyo, igipimo cyo gusimbuza methylcellulose gishobora gutandukana kuva kuri 0 kugeza kuri 3. Dukurikije igipimo cyo gusimbuza, methylcellulose ishobora kugabanywamo ibyiciro bibiri: igipimo cyo gusimbuza kinini n'igipimo cyo gusimbuza gito.
Urwego rwo hejuru rwa methylcellulose yo gusimbura (DS > 1.5): Ubu bwoko bw'ibicuruzwa bufite urugero rwo hejuru rwa methyl yo gusimbura, bityo ntikunda amazi, ntishobora gushonga neza kandi ntishobora kwangirika neza. Ikunze gukoreshwa mu bikoresho by'ubwubatsi, mu gusiga irangi n'ibindi bihe bisaba urwego runaka rwa hydrophobicity.
Igipimo gito cya methylcellulose yo gusimbura (DS < 1.5): Kubera ko methyl idasimbura cyane, ubu bwoko bw'ibicuruzwa bukunda gushonga cyane, bufite ubushobozi bwo gushonga neza kandi bushobora gushonga mu mazi akonje. methylcellulose idasimbura cyane ikoreshwa cyane mu nganda z'ibiribwa n'imiti nk'umuti ukomeza gukurura, ugabanya ubushyuhe n'umuti utera imbaraga.
2. Gushyira mu byiciro hakurikijwe ikoreshwa
Dukurikije ikoreshwa rya methylcellulose mu nzego zitandukanye, ishobora kugabanywamo ibyiciro bibiri: methylcellulose ikoreshwa mu nganda n'ikoreshwa mu biribwa n'imiti.
Metiliselulosi yo mu nganda: Ikoreshwa cyane cyane mu bwubatsi, gusiga irangi, gukora impapuro, gushushanya no mu zindi nganda nk'ikintu gikomeza ubukonje, kole, gushushanya filime, gukora ibikoresho bibungabunga amazi, nibindi. Mu nganda z'ubwubatsi, methylselulosi ikoreshwa mu bicuruzwa bya sima na gypsum kugira ngo inoze imikorere y'ubwubatsi no kuramba; mu nganda zisiga irangi, methylselulosi ishobora kongera ituze n'uburyo irangi ritanye.
Methylcellulose y'ibiribwa n'imiti: Bitewe n'ubushobozi bwayo butangiza kandi butagira ingaruka mbi, methylcellulose ikoreshwa nk'inyongera mu biribwa no mu miti. Mu biribwa, methylcellulose ni ikintu gikunze gutera imbaraga no gukurura imiterere y'ibiryo no gukumira gutandukana cyangwa gutandukana; mu rwego rw'imiti, methylcellulose ishobora gukoreshwa nk'agasanduku k'ibiryo, nk'umuti utwara imiti, kandi ifite akazi ko gusohora imiti mu buryo buhoraho. Uburyo bwo kuribwa n'umutekano wayo bituma methylcellulose ikunzwe cyane muri izi nzego zombi.
3. Gushyira mu byiciro hakurikijwe uburyo bishonga
Methylcellulose igabanyijemo ibice bibiri mu bijyanye no gushonga: ubwoko bushonga mu mazi akonje n'ubwoko bushonga mu binyabutabire.
Methylcellulose ishongeshwa mu mazi akonje: Ubwo bwoko bwa methylcellulose bushobora gushongeshwa mu mazi akonje kugira ngo bube umuti ubonerana kandi utose nyuma yo gushonga. Bukunze gukoreshwa mu nganda zikora ibiribwa n'imiti nk'umuti ugabanya ubushyuhe cyangwa uhindura icyuma. Gushonga kw'ubu bwoko bwa methylcellulose biragabanuka uko ubushyuhe bwiyongera, bityo ubu buryo bushobora gukoreshwa mu kugenzura ubwubatsi iyo bukoreshejwe mu nganda z'ubwubatsi.
Methylcellulose isobeka mu buryo bw'umwimerere: Ubwo bwoko bwa methylcellulose bushobora gushonga mu bintu by'umwimerere kandi bukunze gukoreshwa mu marangi, mu gusiga no mu zindi nganda zikenera ibikoresho by'umwimerere. Bitewe n'ubushobozi bwabwo bwo gukora filime no kudakoresha imiti, irakwiriye gukoreshwa mu bihe bikomeye by'inganda.
4. Gushyira mu byiciro hakurikijwe uburemere bwa molekile (ubukana)
Uburemere bwa molekile ya methylcellulose bugira ingaruka zikomeye ku miterere yayo, cyane cyane imikorere ya viscosity mu gisubizo. Dukurikije uburemere bwa molekile, methylcellulose ishobora kugabanywamo ubwoko bwa viscosity buke n'ubwoko bwa viscosity buke.
Methylcellulose ifite ubukana buke: Uburemere bwa molekile ni buke kandi ubukana bwa molekile ni buke. Ikunze gukoreshwa mu biribwa, mu miti no mu mavuta yo kwisiga, cyane cyane mu gukurura, gukurura no gukurura. Methylcellulose ifite ubukana buke ishobora kugumana ubukana bwiza kandi ikagira ubukana bungana, kandi ikwiriye gukoreshwa mu bintu bisaba ubukana buke.
Methylcellulose ifite ubukana bwinshi: Ifite uburemere bunini bwa molekile kandi ikora umuti ugabanya ubukana bwinshi nyuma yo gushonga. Ikunze gukoreshwa mu bikoresho by'ubwubatsi, mu gusiga no mu byuma bikonjesha mu nganda. Methylcellulose ifite ubukana bwinshi ishobora kongera imbaraga za mekanike, kudashira no gufatana kw'umuti, bityo ikoreshwa cyane mu bikoresho bisaba imbaraga nyinshi no kudashirana cyane.
5. Gushyira mu byiciro hakurikijwe urwego rw'impinduka mu binyabutabire
Methylcellulose ni ubwoko bwa cellulose bwahinduwe hakoreshejwe imiti. Dukurikije uburyo bwo guhindura n'urwego, ishobora kugabanywamo cellulose imwe ya methyl na cellulose yahinduwe ivanze.
Selulosi imwe ya methyl: yerekeza kuri eteri za selulosi zisimbuzwa methyl gusa. Ubu bwoko bw'ibicuruzwa bufite imiterere ihamye n'iya shimi, kandi ubushobozi bwabyo bwo gushonga, gukomera no gukora filime ni bwiza.
Selulosi yahinduwe: Uretse methylation, yongera kuvurwa hakoreshejwe imiti, nka hydroxypropylation, ethylation, nibindi, kugira ngo ikore ikintu cyahinduwe. Urugero, hydroxypropyl methylcellulose (HPMC) na carboxymethyl cellulose (CMC). Izi selulosi zahinduwe zigizwe n'ibice byinshi akenshi zigira ubushobozi bwo gushonga neza mu mazi, kwihanganira ubushyuhe no kudahungabana, kandi zishobora kwihuza n'ibikenewe mu nganda.
6. Gushyira mu byiciro hakurikijwe inganda zikoresha porogaramu
Uburyo methylcellulose ikoreshwa cyane butuma ishyirwa mu byiciro hakurikijwe imiterere yayo mu nganda zitandukanye.
Methylcellulose mu nganda z'ubwubatsi: Ikoreshwa cyane cyane mu bikoresho bishingiye kuri sima n'ibya gypsum nk'uburyo bwo kubika amazi no kuyakomeza. Ishobora kunoza imikorere y'ibikoresho by'ubwubatsi, ikarinda gutakaza amazi hakiri kare, kandi ikongera imbaraga z'ibikoresho birangiye.
Methylcellulose yo mu nganda z'ibiribwa: Nk'ikintu gifasha mu gutunganya ibiribwa, kubyibuha no kubyibushya. Bishobora gukumira ibura ry'amazi, kunoza uburyohe n'imiterere y'ibiribwa, no kongera igihe cyo kumara ibiryo.
Methylcellulose yo mu nganda z’imiti: Nk’igikoresho gifunga ibinini cyangwa ibikoresho bihoraho byo gukoresha imiti. Methylcellulose ishobora kandi gukoreshwa mu gutegura imiti yo mu gifu nk’umuti wizewe kandi utanga imiti neza.
Methylcellulose yo mu nganda z’ubwiza: Mu bikoresho byo kwita ku ruhu no mu mavuta yo kwisiga, methylcellulose ikoreshwa nk'umuti wongera imbaraga, ugabanya ubushyuhe n'umuti wo kwisiga kugira ngo ifashe ibicuruzwa gukora imiterere yoroshye kandi yoroshye mu gihe yongera imbaraga zo kwisiga.
Muri make, hari uburyo bwinshi bwo gushyira methylcellulose mu byiciro, bushobora gushyirwa mu byiciro hakurikijwe imiterere yayo ya shimi, cyangwa hakurikijwe imiterere yayo n'ubushobozi bwayo bwo gushonga. Ubu buryo butandukanye bwo gushyira mu byiciro budufasha gusobanukirwa neza imiterere n'imikorere ya methylcellulose, ndetse bunatanga ishingiro ry'inyigisho mu ikoreshwa ryayo mu byiciro bitandukanye.
Igihe cyo kohereza: Ukwakira-23-2024