Focus on Cellulose ethers

Nigute ukora methylcellulose?

Ubwa mbere, selulose yibikoresho fatizo yimbaho ​​/ ipamba itunganijwe irajanjagurwa, hanyuma ikabikwa hanyuma igasunikwa hifashishijwe soda ya caustic. Ongeramo oxyde olefin (nka okiside ya Ethylene cyangwa propylene oxyde) na methyl chloride ya etherification. Hanyuma, gukaraba amazi no kwezwa birakorwa kugirango amaherezo abone umwerumethylcelluloseifu. Iyi poro, cyane cyane igisubizo cyayo cyamazi, ifite imiterere yumubiri ishimishije. Ether ya selile ikoreshwa mubikorwa byubwubatsi ni methyl hydroxyethyl selulose ether cyangwa methyl hydroxypropyl selulose (bita MHEC cyangwa MHPC, cyangwa izina ryoroshye MC). Iki gicuruzwa gifite uruhare runini mubijyanye na poro yumye. uruhare rukomeye.

 

Ni ubuhe buryo bwo gufata amazi ya methyl selulose ether (MC)?

Igisubizo: Urwego rwo gufata amazi ni kimwe mu bipimo byingenzi bipima ubuziranenge bwa methyl selulose ether, cyane cyane mu iyubakwa rito ryubatswe rya sima na minisiteri ishingiye kuri gypsumu. Gufata neza amazi birashobora gukumira neza ikibazo cyo gutakaza imbaraga no guturika biterwa no gukama cyane hamwe n’amazi adahagije. Kugumana amazi meza ya methyl selulose ether mugihe cy'ubushyuhe bwo hejuru nikimwe mubimenyetso byingenzi bitandukanya imikorere ya methyl selulose ether. Mubihe bisanzwe, kugumana amazi ya methyl selulose ethers bikunze kugabanuka hamwe no kwiyongera kwubushyuhe. Iyo ubushyuhe buzamutse bugera kuri 40 ° C, kugumana amazi ya methyl selile selile isanzwe igabanuka cyane, bikaba ari ngombwa cyane ahantu hashyushye kandi humye. Kandi inyubako yoroheje yubatswe kuruhande rwizuba mugihe cyizuba bizagira ingaruka zikomeye. Nyamara, kuzuza ikibazo cyo kubura amazi binyuze muri dosiye nyinshi bizatera ubukonje bwinshi bwibikoresho bitewe na dosiye nyinshi, bizatera ikibazo cyo kubaka.

Kubika amazi ni ngombwa cyane kugirango hongerwe imbaraga zo gukomera kwa sisitemu yo gutobora amabuye y'agaciro. Mubikorwa bya selile ether, ubushuhe burekurwa buhoro buhoro kurwego rwibanze cyangwa ikirere mugihe kinini, bityo bigatuma ibikoresho bya sima (sima cyangwa gypsumu) bigira igihe kinini gihagije cyo gukorana namazi kandi bigakomera buhoro buhoro.

 

Ni uruhe ruhare rwa methyl selulose ether muri poro yumye?

Methyl hydroxyethyl selulose ether (MHEC) na methyl hydroxypropyl selulose ether (HPMC) hamwe hamwe bita methyl selulose ether.

Mu rwego rwa poro yumye yumye, methyl selulose ether nigikoresho cyingenzi cyahinduwe kubutaka bwumye nka pompe ya pompe, plaster gypsum, tile yometse, putty, ibikoresho byo kwishyiriraho, spray mortar, wallpaper glue hamwe nibikoresho bya caulking. Mubutaka butandukanye bwumye, methyl selulose ether ahanini igira uruhare mukubika amazi no kubyimba.


Igihe cyo kohereza: Mutarama-09-2023
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